Rolls-Royce Archives
| Identifier | Entry | ||
| Scan001 | Sourcing insulating material samples for machine testing at the request of Mr. Royce. | ||
| View original record | To O.O. from EFC. X.1109.. EFC1/AT28.7.19. X.2505.-RE INSULATING MATERIALS. We have been asked by Mr. Royce to get together such information as we can about insulating materials and what can be done… | ||
| Scan002 | List of material suppliers and their products, with associated internal reference numbers. | ||
| View original record | -2- Stabalite No. H Vulcanite No.s 102. 110 ✔ New Eccles Rubber Works, X.2505 (5 Samples) Manchester. Press-phan Amianite, Comite, X.1109 ✔ Micanite X.2495 H. Weidman Ltd., Rapperwill, Switzerland. ✔… | ||
| Scan003 | List of material suppliers, their addresses, and the materials they provide. | ||
| View original record | -3- EFC1/AT28.7.19. Micanite Micafolium Bakelite Pergamite Varnished cloths Silks, Papers, Tapes. X.1109 Archibald Campbell, 8, Wolseley Rd., N. 8. Roburine Rob. A. B. C. D. E. X.2505 Ebonite Isolite… | ||
| Scan004 | Letter from a supplier regarding the provision of insulating materials for testing purposes. | ||
| View original record | X.1109. X.1109 X.2505. THE ELECTRIC & GENERAL WORKS LTD., 128, Stamford Street, S.E.1 London. 31st. July 1919. Dept. ROBURINE+ Your ref Wd/18/NJ.30719. Messrs. Rolls Royce Ltd., Nightingale Road,… | ||
| Scan005 | Letter regarding an enquiry for insulating materials and the need for an import licence from the Board of Trade. | ||
| View original record | X. 1109 8 Wolseley Road, London S.8. 31st July 1919. Messrs. Rolls-Royce Ltd., Derby. X.1109 X.2495. Dear Sirs, Per attention of Mr. Whitehead. Re Yours Ref: Wd17/NJ30719. Insulating Materials. Before… | ||
| Scan006 | Letter from The Beldam Tyre Co. Ltd. regarding a sample of 'Beldalite' insulating material. | ||
| View original record | X.1109 BELDALITE MANUFACTURED BY THE BELDAM TYRE Co.LTD. TELE PHONE: EALING 125-126. GRAMS: "BELDALITE, BRENTFORD" FACTORY & OFFICES: WINDMILL ROAD, BRENTFORD, MIDDX All communications to be addressed… | ||
| Scan007 | Receiving letters and samples for insulating materials from various firms. | ||
| View original record | R R. 235'a (200 T) (S.F. 102. 25-10-18) O. 2244 EFC. from Wd. 1109 X-2505 - Insulating Materials. Wd6/NJ2.8.19. Please receive herewith letters from the following firms:- ✓ Beldam Tyre Co. (and… | ||
| Scan008 | Listing letters and samples of insulating materials received from various companies. | ||
| View original record | R.R. 235 a (200 T) S.F. 103 25-10-18. G. 2244 EFC. from Wd. 1109 Wd9/NJ1.8.19. X.2505 - Insulating Materials. With further reference to yours EFC1/AT28719, of 28th ult. we send you herewith the… | ||
| Scan009 | Enquiry for insulating materials sent to Messrs H. Weidman Ltd. which was returned without comment. | ||
| View original record | R.R. 235. a (200 T) (S.Y. 103 25-10-18) G. 2244 EFC. from Wd. X. 1109 Wd4/NJ11.8.19. X.2505 - Insulating Materials. On the 30th ult. we addressed an enquiry to Messrs.H. Weidman Ltd.,Rapperwill,… | ||
| Scan010 | Suitability of insulating materials for the Self-Starter Motor. | ||
| View original record | To EFC. from BY/HBO. L.1109 BY/HBO11/DW.13/8/19. RE INSULATING MATERIAL. I cannot at the present moment advise any better insulating material than we use on the Self-Starter Motor set etc., samples of… | ||
| Scan011 | Letter offering to send samples of various insulating materials for testing. | ||
| View original record | Wd. NOV 15 1919 RECEIVED X.1109 8, Wolseley Road, Crouch End, London, N. 8. 14th November, 1919. ck Messrs. The Rolls-Royce Ltd., Derby. Dear Sirs, X1109 Wd. 17/N.J. 30719. X 2495 X 3573 Referring… | ||
| Scan012 | Letter detailing various insulating materials like varnished cloths, tapes, silks, and micanite sheets. | ||
| View original record | 14. 11. 19. Messrs. The Rolls Royce Ltd. (contd.) Varnished Cloths, yellow or black. To voltage test & gauge. do. Tapes. To thickness and width. do. Silks, yellow. Usual thicknesses 0.10 & 0.125 m/m.… | ||
| Scan013 | Directive from Mr. Royce regarding the production testing of insulation materials for electrical apparatus. | ||
| View original record | X.1109. Extract from E2/G22.12.19. X.1109 - PRODUCTION TESTING OF INSULATION MATERIALS X.1627. Mr. Royce wishes that the necessary space should be allotted in the works and the necessary apparatus got… | ||
| Scan014 | A revised quotation for an impregnating plant and a sample of 'Electrilac' varnish. | ||
| View original record | R R 736 A (100 T) (R.Y. 846 6-8-19) G 2460. X.1109 To Hy. from Ck. By. CK2/T1 2.1.20. X.753 - IMPREGNATING PLANT. X.1109 is a are letters Attached to Mr. Haldenby's copy of this note received from… | ||
| Scan015 | Letter from Dryers Limited regarding a revised estimate for a plant and a new varnish sample. | ||
| View original record | X.1109 COPY. DRYERS, LIMITED. BALMORAL CHAMBERS, 73 Bridge Street, MANCHESTER. 12/1/20 Messrs. Rolls-Royce Ltd., Nightingale Road, Derby. X.753. X.1109. Gentlemen, As promised your Mr. Clark and Mr.… | ||
| Scan016 | Promotional document for a special insulating varnish named ELECTRILAC from The Rustnot Co. | ||
| View original record | THE RUSTNOT CO. BALMORAL CHAMBERS, 73, BRIDGE STREET, MANCHESTER. X.753. ELECTRILAC. X1109. (Pink in colour) A special Varnish that has many qualities every, valuable to the Manufacturer, Repairer, or… | ||
| Scan017 | Promotional leaflet for Litholite Insulators Limited, detailing their contact information and services. | ||
| View original record | +.1109 LITHOLITE INSULATORS LIMITED, 55-57, Hackney Grove, London, E. 8. Telephone: DALSTON 592. Telegrams: "LITHOLITE, DALSTON 592, LONDON." CONTRACTORS TO Government Departments, Principal… | ||
| Scan018 | List of various insulation materials handed to RHC for experimentation. | ||
| View original record | X.1109 Ck/AT1/S17.2.20. X.1109. INSULATION. MATERIAL. The following material has been handed to RHC. for experiment. 2. Pieces of Vulmos. - black and red. 1. Piece. " Isolite. 1. " " Diamond Fibre 2.… | ||
| Scan019 | Loosening of nuts on the main switch due to the shrinkage of insulating washers. | ||
| View original record | X.1109 CK. EP/T30/F1.3.20. X.3034. - Main Switch. X.1109. Replying to your CK3/T27.2.20, we have not yet had trouble through pillar coming slack, although it is always possible to tighten down the… | ||
| Scan020 | The brittleness of fuse holders made from various materials. | ||
| View original record | X.1109 To EFC. from RHC. RHC8/LG15.4.20. X.1109 RE FUSE HOLDERS IN VARIOUS MATERIALS. X.3962. X.2575 With reference to the above, we hope to hand these Fuse Holders to you in the course of a day or… | ||
| Scan021 | The manufacturing of fuse holders from various materials, noting some are too brittle. | ||
| View original record | R R 235 a (200 T) (S.F. 674. 22-6-19) G. 2376. X-1109 EFC. from RHC. RHC1/LG16.4.20. X-1109 RE FUSE HOLDERS IN VARIOUS MATERIAL. X.3962. X.2575 We are handing to you the following Fuse Holders and we… | ||
| Scan022 | Test report on the shrinkage of a main switch's insulation materials due to heating. | ||
| View original record | X.1109. J.A. 130. X.3034. - MAIN SWITCH. X.1109. April, 23rd. 1920. Shrinkage of Insulation due to Heating - The main switch was placed on a metal plate, and heated by means of a gas ring placed under… | ||
| Scan023 | The effects of heat on micanite and Vulcasbestos insulation materials within a switch. | ||
| View original record | Contd. -2- While hot the nuts remained tight due to the greater relative expansion of the aluminium base. As would be expected from its construction and composition the micanite was the most affected… | ||
| Scan024 | Letter from Dieny & Lucas offering a sample of the 'Soupliso' perfect conduit and wiring system. | ||
| View original record | X.1109. PARIS: 50 RUE TAITBOUT. TELEGRAMMES: DIELUCAS, PARIS. TELEPHONE: CENTRAL 26.02. LYON: 5 RUE GROLEE. Exports.-Commission.-Imports DIENY & LUCAS, 329, High Holborn, London, W.C.1. TELEGRAMS:… | ||
| Scan025 | Letter from Dieny & Lucas introducing 'SOUPLISO' tubing for automotive electrical wiring. | ||
| View original record | Exports,-Commission,-Imports DIENY & LUCAS, 329, High Holborn, London, W.C.1. PARIS: 50 RUE TAITBOUT. TELEGRAMMES: DIELUCAS, PARIS. TELEPHONE: CENTRAL 26.02. LYON: 5 RUE GROLEE. TELEGRAMS:"DIENYCAS,… | ||
| Scan026 | Provisional price list for 'Soupliso' electric wire protective casing. | ||
| View original record | DIENY & LUCAS BANK CHAMBERS 329, HIGH HOLBORN LONDON. W.C. "SOUPLISO" ELECTRIC WIRE PROTECTIVE CASING -:-:-:-:-:-:-:-:-:-:-:-:- PROVISIONAL PRICE-LIST . MAY Ist 1920. - Prices quoted below include… | ||
| Scan027 | Page from 'The Electrical Review' discussing cable faults, composition vs porcelain insulators, and labour conditions for engineers. | ||
| View original record | DISNY & LUCAS, BANK CHAMBERS, 329, HIGH HOLBORN, LONDON, W.C. X 1109 (filed 22.6.20) 221, JUNE 18, 1920.] THE ELECTRICAL REVIEW. 779 eir own brains nor other men's, until now are counted of no value… | ||
| Scan028 | Page from 'The Electrical Review' journal featuring business notes and a pasted French brochure slip. | ||
| View original record | --- [Pasted Slip Text] --- Une autre brochure est éditée à ce sujet. Vous la recevrez gracieusement si vous voulez bien nous en faire la demande. DIENY & LUCAS, BANK CHAMBERS, 329, HIGH HOLBORN,… | ||
| Scan029 | Gathering samples of insulating materials from various firms for testing. | ||
| View original record | X.1109. To R, from EFC. c. to CJ c. to Wor. c. to Bn. EFC3/T30.7.20. X.1109 - INSULATING MATERIALS. You have asked for some work to be done on insulating materials. With this end in view, we have got… | ||
| Scan030 | Design improvements for a distribution board, focusing on insulation materials and terminal connections. | ||
| View original record | Contd. X.3555 R.R. Distribution Board. X.1109. -2- R1/14.8.20. I think we should more nearly follow the 6.EX style with such improvement as inspection of this suggests. X.1109 When passing a fixing… | ||
| Scan031 | Request for particulars of a transformer for testing insulating materials. | ||
| View original record | X.1109 EFC, from By. By5-P26.8½2. ZX.16271 -RE PRODUCTION TESTING. X.1109. X1581. I am rather anxious to have some method of testing thoroughly the insulating materials which we receive from time to… | ||
| Scan032 | Material selection for a distributing board, focusing on insulation and contact maker elasticity. | ||
| View original record | To EFC. from R. c. to CJ. c. to Ds. c. to Hs. c. to Wor. c. to Wd. c. to Mr. Coverley. X1109 R9/G27.8.20. RE R.R. DISTRIBUTING BOARD. X.4173. X.2515. X.1109. Many thanks for suggestion of contact… | ||
| Scan033 | Outlining the requirements for two high-tension transformers for insulation testing. | ||
| View original record | To Wd. from EFC. c. to Wd/Ms. c. to By. X.1109 EFC8/T22.9.20. X.1109 - TRANSFORMER FOR INSULATION TESTING. X.1581 Mr. Royce is anxious that we develop the testing of insulating materials both… | ||
| Scan034 | Letter from Metropolitan-Vickers Electrical Co. Ltd. declining to provide a quotation for a testing transformer. | ||
| View original record | X.1109 METROPOLITAN-VICKERS ELECTRICAL CO. LTD. Trafford Park, MANCHESTER. October, 1st. 1920. Messrs. Rolls-Royce Ltd., Nightingale Road, D E R B Y. Wd/Ms18/FJ29.9.20. EL. T/GR1 Q. 60623. Dear Sirs,… | ||
| Scan035 | Letter from The British Thomson-Houston Co. Ltd. declining to provide a quote for high tension transformers. | ||
| View original record | X.1109 THE BRITISH THOMSON-HOUSTON CO.LTD. RUGBY. 5th Oct. 1920. ABR - Q D954. Messrs. Rolls-Royce ltd. Nightingale Road, D E R BY. Dear Sirs, X.1109 X.1581 High tension Transformers. Yours ref.… | ||
| Scan036 | Instruction regarding the testing and sourcing of 'Continental Fibre' for fuse holders. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 X.1109 88268 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: E.E.L. Date: 5-5-1920 Order No: Customer's No.: X2805 Re: X.1109. Continental Fibre [fuse holders] Sample… | ||
| Scan037 | Letter from The British Electrical Transformer Co. Ltd. regarding a transformer for insulation testing. | ||
| View original record | X.1109 THE BRITISH ELECTRICAL TRANSFORMER CO. LTD. HAYES. MIDDLESEX. (9th October, 1920.) Messrs. Rolls-Royce Ltd., Nightingale Road, D E R B Y. Dear Sirs, X 1551 X.1109 Transformer for Insulation… | ||
| Scan038 | Quotation from Foster Engineering Co. Ltd. for two single-phase oil-cooled transformers. | ||
| View original record | X.1109 FOSTER ENGINEERING CO. LTD. Morden Works, Wimbledon, S.W.19. H.L.B. R.L.B. Q.6367. 12th October, 1920. Messrs. Rolls-Royce Ltd., Nightingale Road, D E R B Y X.1581 X.1109 QUOTATION FROM THE… | ||
| Scan039 | Quotation from The British Electric Transformer Co. for transformers for insulation testing. | ||
| View original record | X1109 THE BRITISH ELECTRIC TRANSFORMER CO. HA ES. MIDDLESEX. 18th October, 1920. Messrs. Rolls-Royce Ltd., Nightingale Road, D E R B Y. Dear Sirs, X.1551. X.1109. Re Transformer for Insulation… | ||
| Scan040 | Conclusion of a quotation letter from The British Electric Transformer Co. Ltd., with an internal remark. | ||
| View original record | Contd. -2- delivery. For delivery we estimate we shall require 6/8 months from date of receipt of order. This quotation is based upon the present current rate of wages, and for every 1/- per week, or… | ||
| Scan041 | Letter discussing a Delco magnetic circuit breaker and Bakelized canvas for insulation. | ||
| View original record | X1109 H. H. 581a (100 T) (S. H. 159. 11-8-20) G. 2800 Cy1 -G 26.10.20. Oct. 26th, 1920. Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Attention : Messrs. Royce and Elliott.… | ||
| Scan042 | Quotations for a transformer for insulation testing and listing potential alternative suppliers. | ||
| View original record | S. H. F. 504/100 (1 H. 119. 11-8-20) G. 3800 To Hy. from EFC. c. to Wd/Ms. X 1109 EFC2/T26.10.20. X 1581 X.1109 - TRANSFORMER FOR INSULATION TESTING. Further to our EFCS/T2-.9.20, we have looked over… | ||
| Scan043 | Required electrical capacity to Messrs. Mitchells and Messrs. H.W. Sullivan. | ||
| View original record | R.R. 518a (100 T.) (S.H. 169. 11-8-20) G. 2380 contd. -2- EFC2/T26.10.20. Messrs. Mitchells, 188, Rye Lane, Peckham, S.E.15. Messrs. H.W. Sullivan, Winchester House, London, E.C.2. Please state that… | ||
| Scan044 | Instructions detailing a scheme for testing the breakdown voltage of various insulation materials. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 X. 1109. 88220 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: EFE Order No: Customer's No.: 1 Re: X 1109 29 - I - 1920 Insulation. Scheme of Testing. Two forms of… | ||
| Scan045 | Instructions for insulation testing procedures for varnishes and paper. | ||
| View original record | ROLLS-ROYCE LIMITED. INSTRUCTIONS. Re: Insulation Testing (contd) For varnishes apply to metal foil giving two coats & allowing each to dry thoroughly. Tapes to be wound on 1" rod overlapping half… | ||
| Scan046 | Instructions for insulation testing procedures on treated and untreated fabrics. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 208552 88222 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To 19 Order No Customer's No. Re: Insulation Testing (Cont'd) oven. Then submit to breakdown test while still dry. ③… | ||
| Scan047 | Instructions for insulation testing procedures. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 88223 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To ___________ Order No ___________ Customer's No. ___________ Re Insulation Testing (Cont'd) ② Soak in water for 24… | ||
| Scan048 | Instructions for a series of tests on insulation, sparking plugs, and commutators. | ||
| View original record | RR.300 (120B) (SF 349 24-1-19) MP 209552 88224 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No. Customer's No. 19 Re Insulation Testing (Cont'd). ① soak in water + weigh periodically. Test breakdown. ②… | ||
| Scan049 | Instruction sheet detailing procedures for insulation testing on condensers and varnishes. | ||
| View original record | RR. 300 (120B) (SF 349 24-1-19) MP 200552 88225 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No. Customer's No. Re. Insulation Testing (Contd). ⑥ For condensers, as 1, 2 & 5. Also test for weak spots… | ||
| Scan050 | Instructions for a series of tests on insulation material, including mechanical, water absorption, and oil solubility tests. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 88226 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No. Customer's No. Re. Insulation Testing (cont'd) allowing each 50% more time than apparently required to… | ||
| Scan051 | Instructions for insulation and asbestos testing procedures. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 208552 88227 ROLLS-ROYCE LIMITED. INSTRUCTIONS. 19 To Order No. Customer's No. Re. Insulation Testing (Contd). ⑥ Heat in oven until change occurs. Note whether… | ||
| Scan052 | Instructions for testing the properties of various insulation materials like ebonite, vulcanite, and porcelain. | ||
| View original record | R.R. 300 (120B) (SF 349 24-1-19) MP 200552 88228 ROLLS-ROYCE LIMITED. INSTRUCTIONS. 19 To Order No. Customer's No. Re Insulation Testing (cont'd). II Block, includes ebonite, vulcanite and various… | ||
| Scan053 | Instructions for insulation and fibres testing procedures. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 88229 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No Customer's No. Re Insulation Testing (Cont'd) Heat further & repeat & so on. Plot a curve of temperature… | ||
| Scan054 | Instructions for continuing the testing of insulation materials like steatite and porcelain for sparking plugs. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 88230 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No Customer's No. 19 Re Insulation Testing (cont'd) occurs. Note this temperature. Also observe any… | ||
| Scan055 | Instruction sheet detailing the apparatus required for insulation testing. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 88231 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: E.F.R. Order No: Customer's No. Re: X1109. Apparatus for Insulation Testing. For the tests specified in the… | ||
| Scan056 | Specifications for insulation testing apparatus including an electrode, test plate, feeler, and oven. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 ROLLS-ROYCE LIMITED. INSTRUCTIONS. 88232 To Order No Customer's No. Re: Apparatus for Insulation Testing (Cont'd) earthed electrode of the stand. This can be 6… | ||
| Scan057 | Continued list of apparatus required for insulation testing. | ||
| View original record | RR.300 (120B) (SF 349 24-1-19) MP 200552 88233 ROLLS-ROYCE LIMITED. INSTRUCTIONS. 19 To Order No. Customer's No. Re. Apparatus for Insulation Testing (contd) steam. ⑤ Balances. Ordinary laboratory… | ||
| Scan058 | Quotation letter from H.W. Sullivan for single-phase oil-filled Potential Transformers. | ||
| View original record | X.1109 H.W. SULLIVAN, 368 & 369 WINCHESTER HOUSE. LONDON. E.C.2. Your ref : Wd/Ms6/FJ27. Enc.1 6th November, 1920. Dear Sirs, X.1109 Transformer for Insulation Testing. X.1561 I regret your enquiry of… | ||
| Scan059 | Letter from paper manufacturers Spicer Brothers regarding 'Sistoflex' electrical insulating materials for motor cars. | ||
| View original record | SPICER BROTHERS LTD PAPER MAKERS FACTORIES WATER STREET, E.C. AND UNION STREET, S.E. BRANCH WAREHOUSES IN UNITED KINGDOM GLASGOW, 19, QUEEN STREET. Telegrams:"WATERMARK,"GLASGOW MANCHESTER, 11, LOWER… | ||
| Scan060 | Product specification sheet for Sistoflex insulating flexible tubes and sleevings from Spicer Brothers Limited. | ||
| View original record | SPICER BROTHERS Limited Insulation Department, 19, New Bridge Street, London E. C. 4. SISTOFLEX INSULATING FLEXIBLE TUBES AND SLEEVINGS. It is mostly used for covering the already insulated or naked… | ||
| Scan061 | Suggesting a supplier, Messrs. Watson & Sons, for a transformer for insulation testing. | ||
| View original record | X-1109 To Hy. from EFC. c. Wd/Ms. EFC7/T9.11.20. X.1109 - TRANSFORMER FOR INSULATION TESTING X-1581 In connection with the above we would like you also to try :- Messrs. Watson & Sons, Sunic House,… | ||
| Scan062 | Specifications for a transformer used for insulation testing to observe the breakdown voltage of samples. | ||
| View original record | X.1109 17.11.20. X.1109 - TRANSFORMER FOR INSULATION TESTING. X.1581. To be used for observing "Breakdown-voltage" of samples. Each test would last for a few minutes only. The area of samples under… | ||
| Scan063 | Procurement process and quotations for a transformer for insulation testing. | ||
| View original record | To Hv. from EFC. X-1109 EFC1/AT19.11.20. X.1109.-TRANSFORMER FOR INSULATION TESTING. X.1581. Previous to our note EFC2/T261020 we had had submitted to us copies of letters as follows:- 1. From… | ||
| Scan064 | Continuation of a letter handing over responsibility for a matter and future correspondence. | ||
| View original record | EFC1/AT191120. Contd. We should be glad therefore if you would carry the matter on from this point, and any further correspondance from this dept. in connection with it will be sent to you only. EFC. | ||
| Scan065 | Quotation from Mitchell's Electrical & Wireless Ltd. for two single-phase oil-cooled transformers and transformer oil. | ||
| View original record | X.1109 MITCHELL'S ELECTRICAL & WIRELESS LTD. 188, Rye Lane, Peckham, S.E.15. Wd/Ms5/FJ27.10.20. AWK.Q/1/F. 19.11.20. Messrs. Rolls-Royce Ltd., Nightingale Road, DERBY. Gentlemen, In reply to your… | ||
| Scan066 | Letter detailing guarantee, performance, and pricing information, including technical suggestions for voltage regulation. | ||
| View original record | Contd. -2- November 19th 1920. of your order implies that an increase in price should be made to correspond with any increase in the cost of material, or in the rates of labor. Guarantee. We will… | ||
| Scan067 | Quotation from Mitchell's Electrical & Wireless Ltd. for an air-cooled transformer and a testing transformer. | ||
| View original record | MITCHELL'S ELECTRICAL & WIRELESS LTD. 188, Rye, Lane, Peckham. S.E.15. Wd/M65/FJ27.10.20. AWKQ/2/F. Messrs. Rolls-Royce Ltd., DERBY. November, 19th 1920. QUOTATION for AIR COOLED TRANSFORMER With Auto… | ||
| Scan068 | Letter from a supplier detailing the specifications, cost, and delivery for an oil-immersed insulation testing transformer. | ||
| View original record | X.1109 WATSON & SONS. LTD. Oil Immersed Transformer 43, Parker, Street, Kingsway. Your ref. Wd/Ms20/FJ. London, W.C.2. TB/HN. 23rd. November, 1920. Messrs. Rolls-Royce Limited, Nightingale Road, D E R… | ||
| Scan069 | Letter from Rolls Royce of America regarding materials used in the Eisemann Magneto gear wheel. | ||
| View original record | X1109 Cyl - G 29.11.20. Nov. 29th 1920. Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Attention Mr. Clark. Dear Sirs, X.430. X.1109. Re Eisemann Magneto X.179. In reply to… | ||
| Scan070 | Requesting an order for two 1 K.V.A. transformers for insulation testing based on received quotations. | ||
| View original record | X1109 To Hy. from EFC. EFC2/T1.12.20. X.1591. TRANSFORMER FOR INSULATION TESTING. X.11091 We attach a table of the various quotations which have been given in connection with the two transformers… | ||
| Scan071 | Purchase of two transformers for insulation testing apparatus. | ||
| View original record | To R. from Hy. c. to CJ. X 1109. Hy 6/DB10.12.20. X.1581 Re Insulation Testing Apparatus. X.1109 ----------------------------------- Mr. Clark has requested that we purchase two small transformers for… | ||
| Scan072 | Letter from Watson & Sons providing a quotation and delivery details for an Oil Immersed Step Up Transformer. | ||
| View original record | X.1109 Copy of letter from Messrs. Watson & Sons, Sunic House, 43, Parker Street, Kingsway, London. W.C2. 13.12.20. Dear Sirs, X.1109.- X.1581.-TRANSFORMER. With regard to our letter of 23rd. ult., we… | ||
| Scan073 | Requesting an order for eight large size batten lamp holders for insulation testing transformers. | ||
| View original record | X.1109 To Hy. from EFC. EFC1/T16.12.20. X.1109 X.1581 RE LAMP HOLDERS FOR LAMP BOARD FOR CONTROL OF TRANSFORMER FOR INSULATION TESTING. Would you kindly arrange to have ordered up for us eight large… | ||
| Scan074 | The uses of Bakelite-Micarta in American electrical and engineering work. | ||
| View original record | X.1109 Q/2/G 21.12.20. Dec. 21st. 1920. Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England, Attention :- Mr. F.H.Royce. Dear Sir:- X.3513. X.1109. Re Bakelite-Micarta. After… | ||
| Scan075 | The use of Bakelite for impregnating coils, armatures, and condensers. | ||
| View original record | -2- Contd. Bakelite impregnation of coils. X.753. X.3343. X.3331.X.543. The Westinghouse motor armatures are varnished with Bakelite varnish and baked, the result aimed at being to make the coil… | ||
| Scan076 | The materials and construction of ignition condensers, commutators, and electrical connections. | ||
| View original record | Contd. -3- Qy2/G21.12.20. (Mica is still used for magneto condensers, however, because of its higher dielectric strength.) Ignition condensers are often assembled in pressed metal containers which are… | ||
| Scan077 | Westinghouse's electrical work and the various applications of Bakelite-Micarta. | ||
| View original record | Contd. -4- Oy2/G21.12.20. such purposes. Westinghouse Figures: The Westinghouse Co. can claim a great experience in electrical work, sharing as they do with the General Electric Co. the greater part… | ||
| Scan078 | Uses of Bakelite for various automotive components. | ||
| View original record | Contd. -5- Oy2/G21.12.20. recently acquired. X.430. Timing gears. for magnetos of canvas-Bakelite have been used for years. Also timing gears on many engines. They are silent and need no shroudings,… | ||
| Scan079 | Acquisition of a High Tension (H.T.) testing transformer. | ||
| View original record | X.1109 To Hy. from R. Copy to CJ. Copy to Wor. Copy to Hs. R2/G23.12.20. X.1581 RE H.T. TESTING TRANSFORMERS. X.1109 With reference to your memo Hy6/DB10.12.20, certainly the works must manage with… | ||
| Scan080 | Letter requesting particulars for a small transformer needed for testing insulating materials. | ||
| View original record | X.1109 Hy6/DB301220. 30th December, 1920. Messrs. W.T. Glover & Co. Ltd., Trafford Park, MANCHESTER Messrs. Royce Limited, Engineers, Trafford Park, MANCHESTER. X1587 x 1109 Dear Sirs, We are in need… | ||
| Scan081 | Letter from W.T. Glover & Co. Ltd. discussing testing transformers and voltage requirements. | ||
| View original record | X.1109 W. T. GLOVER & CO. LTD. Trafford Park, Manchester. 5th Januarym 1921. Messrs. Rolls-Royce Ltd., Nightingale Road, D E R B Y. Dear Sirs, X.1581 X.1109 We duly received your letter of the 30th… | ||
| Scan082 | Letter from Royce Limited to Rolls-Royce Ltd. detailing the specifications of a small transformer and recommending an insulating varnish. | ||
| View original record | R.R. 88A (100 T) (S H 788. 10-12-20) G. 3947 X.1109 ROYCE LIMITED. Trafford Park, Manchester. January, 19th 1921. Messrs. Rolls-Royce Ltd., Nightingale Road, Derby. Dear Sirs, X.1881 X.1109 The writer… | ||
| Scan083 | Letter discussing the properties of a new varnish for impregnating induction coils. | ||
| View original record | Contd. -2- Some little time ago we impregnated one or two of your induction coils in our standard compound, and from the remarks made to the wirter at the time by your Mr. Clark, Mr. Burton and Mr.… | ||
| Scan084 | Abstract of a translated paper by Dr. Bultemann on the properties and breakdown of electrical insulation. | ||
| View original record | X. 1109 (filed 24-1-21) X.1109 - INSULATION. (Abstract of Translation of Dr. Bultemann's Paper 9.12.1917). To investigate, find puncture voltage and leakage current, allowing dampness of air. For… | ||
| Scan085 | Continued list of insulating materials, detailing their properties and applications. | ||
| View original record | S.G. 238A. 100 T) (S.H. 159. 11-8-20) G. 2800 Contd. -2- Insulating material should be mechanically strong, impervious to moisture and oil. Easily machined & able to withstand heat. For switchboard… | ||
| Scan086 | List of engineering materials and their properties, including insulators, resins, fibres, and oils. | ||
| View original record | -3- Contd. Vulcanized fibre Hygroscopic cracks in flame. Hard, pliable, machineable. Cellons From acetylene-celluloses. Non-inflammable. Cellon varnishes. Good for iron etc. Unaffected by oils, fats,… | ||
| Scan087 | Continued page detailing the properties of mineral oils for insulation and testing procedures. | ||
| View original record | R.R. 235A (100 T) (S.H 159 11-8-20) G. 2500 -4- Contd. lowers insulation. Alkalics and sulphur harmful. Mineral oils less liable to carbonize than other kinds in contact with an arc. Best oils… | ||
| Scan088 | Translation of a German article on insulating materials for electrical purposes, originally published in 1917. | ||
| View original record | EFP x 1104 (filed 25-1-21) COPY. does this interest you By2012-20 TRANSLATION FROM AN ARTICLE IN ELECTROTECHNIK. UND MASCHINENBAU IN THE ISSUES OF 2nd DECEMBER AND 9th DECEMBER 1917. Insulating… | ||
| Scan089 | The form of electrodes and its influence on puncture voltages and dielectric strength in insulating materials. | ||
| View original record | - ,2 - The form of the electrodes is of great influence. Text books often give very varied puncture values of the same materials, which is due to the fact that the test conditions, particularly in… | ||
| Scan090 | Dielectric breakdown, potential gradients, and the influence of temperature and specific inductive capacity on insulating materials. | ||
| View original record | - 3 - grows with the increasing potential gradient, the destruction of the dielectric results and the temperature increases as long as the stored heat is greater than the radiated heat. Dark… | ||
| Scan091 | Technical page discussing the properties and challenges of insulating materials, referencing experiments by Tesla and Fessenden. | ||
| View original record | - 4 - same potential as before. It might have been thought that the insulation between the poles would have been improved by the far higher dielectric strength of vulcanite as compared to air. Tesla… | ||
| Scan092 | Page discussing the properties and testing of insulating materials, referencing German standards. | ||
| View original record | - 5 - The percentage of energy losses in insulating materials grows considerably with increase of temperature. Good insulating materials should not only be able to withstand electric influences, but… | ||
| Scan093 | The properties, regulations, and testing of insulating materials for switchboards and electrical installations. | ||
| View original record | - 6 - If such materials were used for switchboards or the like, and the heat were developed through the production of a bad contact, the insulating material would be jeopardised by the use of an… | ||
| Scan094 | The properties and uses of different electrical insulating materials such as slate, marble, mica and wood. | ||
| View original record | - 7 - Slate has only a moderate insulating strength and is liable to split up in layers, but is more easily worked than marble. There are of course large differences of qualities in various samples of… | ||
| Scan095 | Insulating materials, focusing on the disadvantages of wood and the properties of Vulcanite. | ||
| View original record | - 8 - only permissible to use it under oil. It is inflammable and affected by heat and the conditions of the surrounding air. Contraction and distortion are met with even in planks that have been… | ||
| Scan096 | Page describing the properties, composition, and applications of vulcanite, particularly as an electrical insulator. | ||
| View original record | - 9 - or caustic soda should be quite free from water before the sulphur is added, in order to prevent the production of bubbles and the troubles associated therewith. The material thus obtained… | ||
| Scan097 | Description of insulating materials including Gutta Percha, Galalith, rubber and vulkan-asbestos. | ||
| View original record | - 10 - This trouble may be completely removed by the simple means of washing the surface vigorously with distilled water, after which the previous insulation will be restored. Rubber is used in… | ||
| Scan098 | Technical description of cellulose-based insulators, including vulcanised fibre and nitro-cellulose. | ||
| View original record | C H O 12 20 10 We have mentioned wood amongst the natural insulators. This consists mostly of cellulose, which has the chemical composition (C 12 H 20 O 10) x., and is therefore isomeric with starch… | ||
| Scan099 | Description of various cellulose-based materials like celluloid and acetylene-cellulose, their properties, and production methods for use as insulators. | ||
| View original record | - 12 - with nitro-glycerine forms smokeless powder. Soluable nitro-cellulose, a mixture of tetra-nitrate C 12 H 15 (O.N.O.2) 5 O5 together with hot nitric acid produced celluloid by the admixture of… | ||
| Scan100 | Various early plastic insulating materials, their manufacturing processes, and properties. | ||
| View original record | - 13 - The treatment requires considerable practice and a number of artifices in order to obtain successful results. At any rate these processes have generally only reached practical success after… | ||
| Scan101 | Description of the chemical process for creating Bakelite, its properties, and different modifications. | ||
| View original record | - 14 - C6 H5 OH) on mthyl or formaldehyde (.C O H). The behaviour of these hydro-carbons has already been studied and partly crystalline and also resinous products had been formed, but no particular… | ||
| Scan102 | The properties and applications of various dielectric and insulating materials such as Bakelite, Faturans, and Eswelite. | ||
| View original record | - 15 - Bakelite can be produced in various forms that are suitable for electrical engineering by treating it in various manners, for instance, it may be transformed into mechanically strong substances… | ||
| Scan103 | Technical description of the properties and manufacturing of glass and porcelain for insulation purposes. | ||
| View original record | - 16 - chemically. Only a part of these components has changed. Silicate of potash and silicate of soda, called water-glass, are substances that dissolve easily in water; on the other hand silicate of… | ||
| Scan104 | Page detailing the manufacturing process of hard porcelain, its glazing, and its physical and electrical properties. | ||
| View original record | - 17 - On the other hand too little feldspar prevents homogenous formation and reduces the dielectric strength. The surface of porcelain insulators is generally provided with a glaze. The process of… | ||
| Scan105 | Page discussing the properties and design considerations for porcelain insulators. | ||
| View original record | - 18 - It would approach the ideal for an insulating material if it had not the drawbacks of being brittle. This property sets a limit to its use in many cases. The specific weight is about 2.3 to… | ||
| Scan106 | Page discussing the properties and testing procedures for porcelain and asbestos electric insulators. | ||
| View original record | - 19 - The smooth surface of the porcelain allows snow to slide off soon and this process is accelerated by the heat developed by the current. Heavy rains improve the insulation by clearing off dust,… | ||
| Scan107 | Page discussing the properties, composition, and sources of insulating materials, particularly asbestos. | ||
| View original record | - 20 - pitch, resins, sulphur, oils the already mentioned phenol resins, cellons etc. By this means it is achieved that the mechanically useful mineral fibres form together with the well-insulating… | ||
| Scan108 | The sources, processing, and applications of asbestos as an electrical insulating material. | ||
| View original record | - 21 - In Russia the material is obtained by surface mining and it is not necessary to use explosives as the layers containing the asbestos can be broken with an axe. The yellow colored Russian… | ||
| Scan109 | Technical page discussing the properties and specifications of insulating oils for transformers and switches. | ||
| View original record | - 22 - The fibrous insulating materials, including silk, that can be woven, are good dielectrics and have been mentioned on various occasions. It is not intended to treat these materials at the… | ||
| Scan110 | Testing procedures and properties of insulating oils and various insulating materials like Xylolith, asbestos-slate and duro. | ||
| View original record | - 23 - Alkalies and sulphur have harmful effects in addition to those produced by dampness and acid. No clouding of the liquid should result by passing pure oxygen through it at a temperature of 120°… | ||
| Scan111 | The state of dielectric and insulating material manufacturing and classification. | ||
| View original record | - 24 - The manufacture of dielectrics is still in process of development and a number of problems call for solution, for instance, knowledge of the influence of electric forces, the development of… | ||
| Scan112 | Page discussing the progress and future developments in the field of electrical insulating materials. | ||
| View original record | - 25 - of research and only seemed to have a low appreciation of the tremendous value that chemistry might have in progress in this direction. The conditions have changed considerably since then, but… | ||
| Scan113 | With questions regarding the properties and substitution of various insulating materials. | ||
| View original record | R.E. 258a (100 T) S.H. 798. 10-12-20. G 2947 X.1109 EFC/T3.3.21. X.1109 - INSULATING MATERIALS. 1. Can Bakelite in the form of sheets be used in place of Micanite ? 8513 Ref. No. X.4285 [crossed out]… | ||
| Scan114 | Issues with porcelain insulators for ballast resistance and the proposed alternative of soap stone. | ||
| View original record | R.R. 285A. (59 T)(S.H. 986. 19-8-21.) G. 3098 X 1109 Wor. from BY. BY14-P11.3.21. X.3716 RE INSULATORS IN BALLAST RESISTANCE. X.1109. The insulator as at present, of course, being produced in… | ||
| Scan115 | Visit to the Watford Magneto Company regarding insulation materials and the moulding process of 'Beldalite'. | ||
| View original record | To R. from Hs. c. to CJ. c. to EN c. to E. c. to Da. c. to BY. c. to Wor. c. to Wd. X.1109 Hs1/LG15.3.21. X.1109 INSULATION MATERIALS. X.800 X.4287 X.2494 X.3513 X.2505. On our way back to Derby… | ||
| Scan116 | Moulding processes for materials like Beldalite and ebonite, comparing techniques and finishes. | ||
| View original record | Contd. -2- Hsl/LG15.3.21. they remove it from the die after 35 minutes baking, is so as to reduce the number of dies required. The material has set by that time and can be finished baking without… | ||
| Scan117 | Investigation into the production and sourcing of moulded materials like Bakelite and Beldalite. | ||
| View original record | Contd. -3- They make their own drop forgings, both steel and brass, and also their own castings. They had some very nice handy machines for winding armatures. We arranged with them that we would send… | ||
| Scan118 | Referring to a report and attaching samples of insulation material. | ||
| View original record | x.1109 To R. from Hs. Hs2/LG15.3.21. x.1109 INSULATION MATERIAL. With reference to our report Hs1/LG15.3.21, we attach samples of the above material. Hs. | ||
| Scan119 | Importance of sourcing mouldings in insulating materials like bakelite and stabalite for various electrical car parts. | ||
| View original record | X.1109 To EFC. from R. c. to CJ. c. to WOr. c. to PN. c. to Hs. c. to By. c. to Hy. c. to Wd. c. to Works Committee. RE/G15.3.21. X.1699 RE ELECTRICAL DEPARTMENT. X.3513. X.2494. X.1109. X.2505.… | ||
| Scan120 | Material sourcing and manufacturing methods for a new electrical department. | ||
| View original record | Contd. -2- R6/G15.3.21. (3) That we should avoid the use of ebonite almost entirely if mouldings made in bakelite are available, the disadvantage of the ebonite being that it is easily distorted when… | ||
| Scan121 | Manufacturing process improvements and the in-house production of electrical components. | ||
| View original record | R6/G15.3121. -3- Contd. only, and avoid entirely a staff of fitters. It must be a question of expert tool-makers, semi-skilled machine hands and assemblers. We must thank Mr. Hives for pointing out… | ||
| Scan122 | Proposing the adoption of Bakelite as an insulating material for various car components. | ||
| View original record | X.1109 To R.R. of American Inc. (For the attention of OY). From R. c. CJ. c. Wor. c. Hs. c. Ey. c. EFC. X.1109 X.3513. RE INSULATING MATERIAL. X.4287. X.2494. You will see from recent memos that I… | ||
| Scan123 | Letter discussing the suitability of Bakelite and Stabalite for electrical components, noting issues with cost and quality. | ||
| View original record | Contd. -2- I did not know that I had to trouble you or myself in this matter, as I thought our people at Derby were obtaining such parts O.K., but I find from the very high cost of our electrical… | ||
| Scan124 | Insulating materials, referencing pages from 'Automotive Industries' and advising of a moulded rotor being sent for inspection. | ||
| View original record | X1109 To R. from Hs. c. to CH. c. to En. c. to E. c. to Da. c. to Ey. Hsl/LGO.3.21. X.1109 - RE INSULATION MATERIAL X.2494. X.3513. X.4186. Attached herewith are pages taken from a recent American… | ||
| Scan125 | Properties and suitability of 'Condensite' as an alternative insulating material to 'Bakelite'. | ||
| View original record | X.1109 To R.R. of America Inc. from R. (For the attention of Gy.) Copy to HS. R8/G1/4/21. RE INSULATING MATERIALS. X.1109 X.2494 X3513 I have obtained several advertisements with reference to other… | ||
| Scan126 | Confirming an arrangement to supply a list of insulation materials for car electrical equipment. | ||
| View original record | X1109 To By/WER. from EFC. EFC4/T8.4.21. X.1109 - INSULATION MATERIALS+ X.4165. This is to confirm my assistant's arrangement with you that you will supply us with a list of all the insulations used… | ||
| Scan127 | Insulating materials, an American Bosch Induction Coil, and distributors. | ||
| View original record | COPY. X.1109 Oy2 - G5421. April 5, 1921. Hs RECEIVED MAY 9 1921 E4S / 7JA Mr.Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Attention . Mr. F.H.Royce and Works Committee. Dear… | ||
| Scan128 | The use of Bakelite and other insulating materials in magneto and coil components. | ||
| View original record | -2- brush on magnetos, because once a spark passes on Bakelite it leaves a carbon track which is a conductor for subsequent sparks. For these positions it is necessary to use hard rubber without any… | ||
| Scan129 | The properties and applications of Bakelite, Condensite, and other insulating materials. | ||
| View original record | -3- Properties of Bakelite or Condensite. We understand that Bakelite and Condensite are practically the same. Our coil cases are of Condensite. Page thirteen of the Condensite folder enclosed… | ||
| Scan130 | Instruction sheet for sourcing samples of Bakelite, Condensite, and Beldalite insulation materials for testing. | ||
| View original record | RR 500*(20B) (SF 349 24-1-19) MP 200552 X.1109 88309 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: E.F.E. Order No: AA55 Customer's No.: 1 Re: X 1109. Date: 9 April 1921 X.2494 Re Insulation Required for… | ||
| Scan131 | Instruction memo discussing alternative manufacturing materials like Solidite, Litholite, and Lapilac. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 88310 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No Customer's No. Z Re Similar devices are made for "Solidite" and "Litholite" by their respective… | ||
| Scan132 | Instruction sheet listing various insulation materials required for testing and their potential suppliers. | ||
| View original record | RR.300 (120B) (SF 349 24-1-19) MP 200552 88311 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: EFC Order No: AA56 Customer's No.: 1 Re: X1109 12 April 1921 Insulation Required for Testing. The list of samples… | ||
| Scan133 | Note on the suppliers of various insulating materials including Solidite, Condensite, and Japilac. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 88312 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No Customer's No. Z Re. by Fleming, Birkby & Goodall Ltd Liversedge, Yorks. Solidite. Supplied by The… | ||
| Scan134 | Letter from Rolls-Royce of America regarding insulating material samples sent to Mr. Claude Johnson and Mr. F.H. Royce. | ||
| View original record | COPY. X 1109 Oy1/G22421. April 22, 1921. Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Attention. Mr. F.H.Royce & Works Committee. Dear Sir, X.1109 Re Insulating Material.… | ||
| Scan135 | Letter from a supplier detailing the properties of molded insulation products, Pyroplax and Thermoplax. | ||
| View original record | COPY. THE CUTLER-HAMMER MFG. CO. Electric Controlling Devices, Boston, Mass. April 20, 1921. Rolls-Royce of America, Inc. Springfield, Massachusetts. Attention. - Mr.A.C.Ross. Assn't.to Pur.Agt.… | ||
| Scan136 | Letter from Cutler-Hammer Mfg. Co. detailing commercial molding limits and standard breaking tests. | ||
| View original record | -2- hence the commercial limits to which a piece can be moleed are from 5/1000 to 10/1000 from blueprint dimensions, and like pyroplax, the more allowance possiblethe lower the cost of molding.… | ||
| Scan137 | List of insulating materials used on electrical units. | ||
| View original record | To EFC. X.1109 BY/WER7/EF22. 4. 21. X.1109 INSULATING MATERIAL USED ON ELECTRICAL UNITS. With reference to your request for a complete list of the above material, kindly receive herewith attached blue… | ||
| Scan138 | Copy of a letter from Fleming, Birkey & Goodall Ltd. regarding 'ELO' insulating material. | ||
| View original record | X1109 COPY OF LETTER RECEIVED FROM :- MESSRS FLEMING, BIRKEY & GOODALL, LTD., LIVERSEDGE, YORKS. ENGLAND. Your ref Wd8/NJ 22421. Our ref. WVS/HG. April 23rd. 1921. Messrs. Rolls-Royce Ltd.,… | ||
| Scan139 | Visit to potential suppliers for electrical porcelain insulating materials, including beads and porcelain for spark plugs. | ||
| View original record | X1109 R.from Wd. c.to CJ. c.to Wer. c.to Da. c.to Hs c.to EFC. c.to Bvr c.to EH. STAMP: RECEIVED APR 30 1921, X.1109. X 2738 Insulating Material. I confirm mine Wd10/NJ27.4.21. Yesterday I visited… | ||
| Scan140 | Instruction sheet regarding the machining tests for samples of insulation materials. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 X.1109 88315 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: EFC Order No. AA 38 Customer's No. 1 Re. X.1109 Samples of Insulation for Machining Tests. X.3513. A… | ||
| Scan141 | Requesting machining tests on samples of insulating materials, including Continental Bakelite. | ||
| View original record | R.R. 235a (100 T) S.H SS. 22-7-20 G 2769 X.1109 To RHC. from EFC. EFC1/T6.5.21. c. Hs. c. Da. c. Da/Thr. c. By. X.1109 SAMPLES OF INSULATING MATERIAL X.3513 FOR MACHINING TESTS. We have made a… | ||
| Scan142 | List of samples of insulating materials for machining tests. | ||
| View original record | X.1109 6.5.21. LIST OF SAMPLES OF INSULATING MATERIALS FOR MACHINING TESTS. Ref. Letter. Particulars. A. Bakelite disc. B.T.H.Co. B " plate, Arch. Campbell. C " dilecto (brown) Continental Fibre… | ||
| Scan143 | Letter discussing insulating materials, highlighting the effects of humidity in England on electrical components during manufacture. | ||
| View original record | To CR. from R. Copy to Cd. " " FRS. " " RFO. " " Mr. Nock. X1109 R6/610/5/21. X 1109 RE INSULATING MATERIALS. X. 753 Thank you very much indeed for the information you have collected with reference to… | ||
| Scan144 | Instruction sheet discussing the use of Bakelite as a replacement for Mica and Micanite in condensers and commutators. | ||
| View original record | RR 300*(120B) (SF 349 24-1-19) MP 200552 X. 1109- 88320 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: EFC Order No: AA 61 Customer's No. 1 Re: X 1109. X3573. Bakelite in Place of Mica and Micanite. The chief… | ||
| Scan145 | Use of Bakelite and other insulating materials for starter motor commutators. | ||
| View original record | that these are standard with the Westinghouse Co, made with Bakelite having a sawdust base. Also in EP21/F26-4-21 it is stated that the Crompton Co. make commutators in 'Formite' (practically the same… | ||
| Scan146 | Letter from Westinghouse Electric regarding specifications for magnet coils for a main switch and actuating box. | ||
| View original record | WESTINGHOUSE ELECTRIC AND MANUFACTURING COMPANY. X 1109 March 24, 1921. Mr. M. Olley, Rolls-Royce Co. of America Inc., Springfield, Mass. Dear Mr. Olley, X. 1109. X. 3331. X. 3034. X 3428. Replying to… | ||
| Scan147 | Letter providing suggestions on the construction of magnet cores, specifically regarding leads, banding, and treatment. | ||
| View original record | M.Olley.- Sheet 2. March 24, 1921. wind your coils with bare enamelled wire. If you care to go into this question further I will be glad to talk this matter over with you and offer suggestions as to… | ||
| Scan148 | Suggestion to improve electrical insulation materials on the car by replacing Ebonite with Bakelite. | ||
| View original record | X.1109 Oyé - C 24321 March 24, 1921 Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Attention: Mr. Royce & Works Committee. Dear Sir:- X.1109 X.1104 Re: Insulation X.3716… | ||
| Scan149 | Material changes for an actuating box, main switch, and push button switch, primarily to Bakelite. | ||
| View original record | Oy6 - G 24321 Mr. Claude Johnson - Sheet 2 (2) Actuating Box (Cont'd): or Bakelite Dilecto grade XX (paper base). Washers in coils F-7054, F-6710 and G-4288 changed from Presspahn to Bakelite Dilecto,… | ||
| Scan150 | Letter to Mr. Claude Johnson regarding the use of enamelled wire for coil winding. | ||
| View original record | Oy6 - G 24321 Mr. Claude Johnson - Sheet 3 March 24, 1921 the production of the electrical instruments, at the same time improving the permanency of the insulation. We may add that enamelled wire is… | ||
| Scan151 | Letter from GRAY & DAVIS Inc. discussing the use of enamel wire for a magnet coil. | ||
| View original record | X1109 GRAY & DAVIS Inc. March 25, 1921. Rolls-Royce of America, Inc., Springfield, Mass. Attention: Mr. M.Olley, Engineer. X.1109 X 3331 X 3034 X3428 Gentlemen, Your letter of March 21st to Mr.… | ||
| Scan152 | Insulation, attaching a copy of another document to be brought before the Works Committee. | ||
| View original record | COPY. X.1109 To FWD. c/c to R. BJ/Py18/DB12421. X.1109 Re: Insulation. I attach copy of Oy6-G24321. Will you please have this brought before the next meeting of the Works Committee. BJ/Py. Enc. | ||
| Scan153 | The standardisation and testing of insulation materials. | ||
| View original record | H.R. 199 (250T) (SDg76 19-7-17) MP18/8865 X.1109. EFC. from BY. c. U.S.A. Dept. BY17-P25.4.21. X.1109 INSULATION MATERIALS. X.3445 I am sending you herewith a note received through EWT, from America,… | ||
| Scan154 | Inquiry to the British Electrical & Allied Industries Research Association regarding electrical insulating materials. | ||
| View original record | X 1109 EFC5/T. 30th May, 1921. Mr. E.B. Wedmore, Director and Segretary, British Electrical & Allied Industries Research Association, 19, Tothill Street, Westminster, S.W.1. Dear Sir, We have noticed… | ||
| Scan155 | Letter to Westinghouse seeking recommendations on the construction of magnet coils, comparing English and American methods. | ||
| View original record | OY3/G21321. X1109 March 31, 1921. Mr. R.G. Thompson, Westinghouse Electric & Mfg. Co., Springfield, Mass. My dear Mr. Thompson, X 1109 X 3331 X 3034 X 3428 I should be interested in receiving the… | ||
| Scan156 | Clarifying that Stirling insulating varnish is an English product and that more information can be obtained. | ||
| View original record | X 1109 C.S. 331e (100 T) R.H. sp. 22-7-20. G 2559 31.5.21. X.1109 - INSULATING VARNISH. In regard to Mr. Olley's note, Wd. remarks that he can obtain for us any information with regard to Stirling… | ||
| Scan157 | Forwarding a booklet from Hightensite Ltd. concerning a metal-covering process for insulating materials. | ||
| View original record | X. 1109 WD4/NJ1.6.21. X.1109 Hightensite Ltd., Normandy Works, Custom House. E.16. I am sending you herewith copy of this firm's booklet entitled, "Improvements in Insulating Material" and would draw… | ||
| Scan158 | Letter from the British Electrical and Allied Industries Research Association concerning research into insulating materials. | ||
| View original record | TELEPHONE: VICTORIA 9937. X.1109. THE BRITISH ELECTRICAL AND ALLIED INDUSTRIES RESEARCH ASSOCIATION. SUPPORTED BY THE DEPARTMENT OF SCIENTIFIC AND INDUSTRIAL RESEARCH. THE INSTITUTION OF ELECTRICAL… | ||
| Scan159 | Cover memo forwarding a letter from the British Electrical and Allied Industries Research Association about synthetic resin insulating materials. | ||
| View original record | X. 1109. To Wd. from EFC. EFC4/T9.6.21. X.1109 - INSULATING MATERIALS OF THE SYNTHETIC RESIN CLASS I send you herewith copy of a letter received from the British Electrical and Allied Industries… | ||
| Scan160 | Sample of hightensite material provided for machining tests. | ||
| View original record | x1109 R.R. 222a (100 T) (S.H. 798, 10-12-20) G. 2948 To RHC. from EFC. EFC9/T15.6.21. X.1109 - SAMPLES OF INSULATING MATERIALS FOR MACHINING TESTS. Herewith piece of hightensite which will you kindly… | ||
| Scan161 | Insulation, forwarding a copy of Mr. Olley's note. | ||
| View original record | X1109 To Wd. from EFC. E.FC7/T23.6.21. X.1109 - RE INSULATION. Herewith please receive copy of Mr. Olley's note Oy6/G24.3.21 in connection with the above, as promised. EFC. | ||
| Scan162 | Letter to The Lucas Electrical Co. regarding a visit report and a sample of insulation from The Continental Fibre Co. | ||
| View original record | S.M. 732a (100 Trs)(S.H. 768, 10-12-20) G. 1047 EFC X.1109. STAMP: 12 AUG 1921 STAMP: WORKS RECEIVED AT CHORLEY Ref: DA/THR3/CB12-7-21. July 12th, 1921. Messrs The Lucas Electrical Co., Well Street,… | ||
| Scan163 | Properties and potential use of Thermoplax and Pyroplax cold moulded insulation materials. | ||
| View original record | X.1109. 2 To R & E. from EFC. c. to CJ & PN. c. to Hy. & TE. c. to BP & Ds. c. to R.R. of American Inc. c. Dowd. EFC1/T10.8.21. X.2494 - COLD MOULDED INSULATION - THERMOPLAX AND PYROPLAX X1109 We have… | ||
| Scan164 | Unanswered enquiry to the Igranic Electrical Co. for raw materials for mouldings. | ||
| View original record | R.R. T.Bks (100 T) (S.H. 798, 10-12-38) G. 2948 Contd. -2- EFC1/T10.8.21. We have had no direct answer to our enquiry to the Igranic Electrical Co. as to whether they are prepared to supply the raw… | ||
| Scan165 | On the availability of Paxolin and Bakelite for insulating experimental electrical units. | ||
| View original record | X.1109 EFC. 19th Aug. 1921. AB.19. X 3428 X.3716. X.3513. X.3034. X.1109 - PAXOLIN FOR EXPL. UNITS Two pieces of paxolin each 1/16" x 6" x 6" are now available for use in experimental electrical… | ||
| Scan166 | Inclusion of samples from Swiss Insulating Works Ltd and an attached list of recommendations. | ||
| View original record | -2- Contd. 2 cm. dia. from Arch. Campbell, (representing the Swiss Insulating Works Ltd.) are being included in the samples. A list of Mr. Olley's recommendations is attached. F.J.A. | ||
| Scan167 | List of recommended changes for insulation materials in various electrical unit components. | ||
| View original record | -3- RECOMMENDED CHANGES OF INSULATION IN ELECTRICAL UNITS. BALLAST. Piece No. | Name. | Present matl. | Proposed Material. F.7343-4 | Washers | Mica | Bakelite dilecto, gd.A. F.7354. | Bush |… | ||
| Scan168 | Modified list of experimental insulations for electrical units, suggesting material substitutions. | ||
| View original record | X1109 EFC. AB.21. 31st Aug. 1921. X.1109 - MODIFIED LIST OF EXPERIMENTAL INSULATIONS FOR ELECTRICAL UNITS. X.3513. Now that the sheet material, with the exception of the grade A (asbestos-paper base)… | ||
| Scan169 | List of experimental insulations for electrical units, comparing present and proposed materials. | ||
| View original record | EXPERIMENTAL INSULATIONS FOR ELECTRICAL UNITS. Piece. No., Name., Present material., Proposed material. BALLAST F.7343-4, Washers., Mica., Bakelite-dilecto. F.7354, Bush., Micanite., " F.7345,… | ||
| Scan170 | Comparative test report on insulating varnishes. | ||
| View original record | To. R from EFC. c. CJ. c. By. c. Wor/Mr. Brock. X. 1109 EFC4/T20.9.21. X.1109 - INSULATING VARNISHES. Please find attached copy of my assistant's report on some comparative tests of a sample of… | ||
| Scan171 | Comparative tests of standard insulating varnishes with Asiatic varnish. | ||
| View original record | EFC. AB. 23. X.1109 - COMPARATIVE TESTS OF STANDARD INSULATING VARNISHES WITH ASIATIC VARNISH. A bottle of Asiatic varnish received in January from Messrs. Royce Ltd. has now been used for tests in… | ||
| Scan172 | The properties and testing of asiatic varnish compared to other varnishes. | ||
| View original record | G823. -2- Contd. Inflamability. The asiatic varnish contains a highly evaporative constituent which accounts for its rapid drying and makes it very inflammable. The other varnishes in the liquid state… | ||
| Scan173 | Internal instruction memo regarding the properties and application of Armacell varnish compared to Asbestic varnish. | ||
| View original record | R.R. 258 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Mr Clarke Order No Customer's No. With reference to your Memo on Varnishes X1109 Please note that armacell is a… | ||
| Scan174 | Product list from The Insulating & Waterproofing Compounds Company. | ||
| View original record | X.1109. The Insulating & Waterproofing Compounds Company (J. HENDERSON, D Sc. M.I.E.E.) 99, CURTAIN ROAD, LONDON, E.C. SPECIALITIES. Insulating Compound M.R. 695. For Impregnating Coils, etc.… | ||
| Scan175 | Product specification for Insulating Compound M.R. 695 from The Insulating & Waterproofing Compounds Company. | ||
| View original record | The Insulating & Waterproofing Compounds Company (J. HENDERSON, D Sc. M.I.E.E.) 99, CURTAIN ROAD, LONDON, E.C. INSULATING COMPOUND M.R. 695. (As supplied to H.M. Government). This Compound is a liquid… | ||
| Scan176 | Product information sheet for Lamplac spirit lacquer and Invarine insulating spirit varnish. | ||
| View original record | The Insulating & Waterproofing Compounds Company (J. HENDERSON, D.Sc. M.I.E.E.) 99, CURTAIN ROAD, LONDON, E.C. "LAMPLAC." "Lamplac" is a Spirit Lacquer specially manufactured for colouring the bulbs… | ||
| Scan177 | Product information sheet for Racvar gut preservative and Anti-Sulphuric Enamels. | ||
| View original record | The Insulating & Waterproofing Compounds Company (J. HENDERSON, D Sc. M.I.E.E.) 99, CURTAIN ROAD, LONDON, E.C. "RACVAR." "Racvar" is a Gut Preservative which is used to waterproof and preserve the… | ||
| Scan178 | Technical flyer for 'Proofine', a waterproofing compound for various materials including leather and textiles. | ||
| View original record | The Insulating & Waterproofing Compounds Company (J. HENDERSON, D Sc. M.I.E.E.) 99, CURTAIN ROAD, LONDON, E.C. "PROOFINE." "Proofine" is a new Waterproofing Compound entirely different from anything… | ||
| Scan179 | Letter from Bell's United Asbestos Co. Ltd. enclosing a booklet on their articles manufactured for electrical purposes. | ||
| View original record | X.1109 BY SPECIAL AUTHORITY BELL'S UNITED ASBESTOS CO.LTD. PIONEERS OF THE WORLD'S ASBESTOS INDUSTRY CONTRACTORS TO THE ADMIRALTY WAR OFFICE OFFICE OF WORKS HOME OFFICE INDIA OFFICE AND THE PRINCIPAL… | ||
| Scan180 | Quotation letter for insulating compounds and varnishes. | ||
| View original record | X. 1109 TELEPHONE: LONDON WALL 3530. THE INSULATING & WATERPROOFING COMPOUNDS Co. (J. HENDERSON, D.Sc., M.I.E.E.) Works: Peckham, S.E. 99, CURTAIN ROAD, E.C. Reference.....MR/695/198 7th.Dec.1921… | ||
| Scan181 | Letter from The L.P.S. Electrical Co. responding to an inquiry about insulating strips and foils. | ||
| View original record | X1109 COPY OF LETTER RECEIVED FROM:- THE L.P.S. ELECTRICAL CO. AVENUE ROAD, ACTON, LONDON, W.3. FOY8/AG3.12.21. L. 8th December, 1921. Messrs. Rolls-Royce Ltd., Nightingale Road, Derby. Dear Sirs,… | ||
| Scan182 | Quote from L.P.S. Electrical Company for insulating varnished paper and silk, including pricing and delivery details. | ||
| View original record | ADW/NW 9.11.23 -2- Insulating varnished paper. .0015" thick x 2¼" wide) .0018" " x 2¼" " ) in rolls 50 yards long. .002" " x 2¼" " @................90/0d. per 1,000 yards. Insulating varnished silk.… | ||
| Scan183 | Request to order a sample of insulating compound for a comparative trial for coil impregnation purposes. | ||
| View original record | R.R. 335s (100 T) (S.H 798. 10-12-20) G. 2948 X.1109 EFC1/T14.12.21. To Wd. from EFC. c. By. c. Mr. Gamble. X.753 - COIL IMPREGNATION. X.1109.. Would you kindly order up from the Insulating… | ||
| Scan184 | Receipt of M.R.695 insulating varnish for comparative trial. | ||
| View original record | X1109 East D/W-H.2C.(T.M.)/R.R. 7.1.22. A.1109 - INSULATING VARNISH. One gallon tin of M.R.695 insulating varnish has been received from the Insulating and Waterproofing Compounds Ltd., 99 Curtain… | ||
| Scan185 | Internal instruction to order 'Elo' varnish for testing on armature and ignition coils. | ||
| View original record | RR.238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 X.1109. ROLLS-ROYCE LIMITED. INSTRUCTIONS. To W Clarke 28-2-1922 Order No Customer's No. Mr Birkby of the firm who supply us with "Elo" moulding powder… | ||
| Scan186 | Requesting an experimental order of 'Elo' impregnating varnish for testing on armature and ignition coils. | ||
| View original record | To Wd. from EFC. X1109 EFC3/T3.3.22. X.1109 - IMPREGNATING VARNISHES. It is considered desirable to obtain experimentally say, 2 gallons of "Elo" impregnating varnish, as we have a report from Messrs.… | ||
| Scan187 | Product information sheet for Ammanite moulded fibre components from Amalgamated Manufacturers. | ||
| View original record | E.F.C. X.1109 AMMANITE — MOULDED FIBRE — IS MADE IN THREE QUALITIES FOR THE ELECTRICAL, GENERAL AND TOY TRADES. Metal Parts, Screws and Bushes can be Moulded in Position. WE WILL GIVE YOU ADVICE ON… | ||
| Scan188 | Internal request to enquire with Messrs. Dieny & Lucas about sourcing various sizes of sistoflex insulating tubing. | ||
| View original record | To Wd. from EFC. X 110 9 EFC2/T14.3.22. X.110 9 - RE SISTOFLEX TUBING Could you kindly enquire of Messrs. Dieny & Lucas for various sizes of sistoflex insulating tubing which they supply, as we are… | ||
| Scan189 | Notes from a Cutler Hammer Co's pamphlet on the materials Thermoplax and Pyroplax. | ||
| View original record | X1109 X.2494. NOTES FROM CUTLER HAMMER CO's PAMPHLET X.1109. ON THERMOPLAX AND PYROPLAX.10.8.21. THERMOPLAX. Cold-moulded under extremely high pressure. Withstand 600°F (= 315°C) and -30°F (= -34oC)… | ||
| Scan190 | Requesting machining test results for various insulating materials to complete a report. | ||
| View original record | X.1109. To RHC. from EFC. EFC3/T24.4.22. X.1109 - TESTS OF INSULATING MATERIALS We now have fairly complete results on the series of tests, including hardness, water and oil absorption, effect of… | ||
| Scan191 | Cover letter accompanying a report on tests of insulating materials. | ||
| View original record | To E. C. Da C. El C. Ey C. Hd C. Hoy X. 1109. KFC1/VAQ/5/22. X.1109 - TESTS OF INSULATING MATERIALS X. 2494 Herewith please receive a copy of a report by one of my assistants on Tests of Insulating… | ||
| Scan192 | The hardness and heat tests of various insulating materials. | ||
| View original record | EFC. AD.44. 10th April, 1922. X.1192 - TESTS OF INSULATING MATERIALS. A series of tests has been carried out on a number of samples of insulating materials which have been received from various… | ||
| Scan193 | Test report on various fibre and insulating materials, detailing results from heat, water, oil, and acid immersion tests. | ||
| View original record | -2- Contd. Material. Grade. Test 1. Test 2. Remarks. Diamond Fibre. Sheet,grey. - Carbonized 275º) Sheets not suits (Fibres) natural } for test 1. Vulmos fibre. - 13 Blisters 230º. Elluminite. Cured.… | ||
| Scan194 | Report comparing the properties and test results of various insulating materials like phenols, rubbers, and fibres. | ||
| View original record | -3- Contd. Material. Grade. Test 3(%) Test 8. Remarks. PHENOLS Bakelite. Campbell. 5.0 Surface rotted. Bak-dilecto. Black. 1.8 Unaffected. Bak-micarta. Black. 6.6 Surface rotted. " Brown. 5.6 " None… | ||
| Scan195 | Heating tests on asbestos moulded bakelite for the Goshawk II Commutator. | ||
| View original record | X1109 Extract from E3/M23.5.22. RE GOSHAWK II COMMUTATOR. X.1109. X.3513. Referring now to Mr. Clark's report (X.1109) tests of insulating material, it would be very useful if the 2 forms of asbestos… | ||
| Scan196 | List of insulation materials and their suppliers for the Experimental Department. | ||
| View original record | X.1109 INSULATION IN EXPERIMENTAL DEPT. * = See supplement. PAGE: I MATERIAL | SUPPLIERS | ARTICLE | COLOUR OR GRADE | NO. | REMARKS --- | --- | --- | --- | --- | --- Bakelite | B.T.H. Co. Coventry. |… | ||
| Scan197 | Wiring interconnections for the R+R Switchbox with a Smith dynamo and other components. | ||
| View original record | R.R. 224a.(100 T) (S. G. 542, 19-2-20) G 2618 To Da. from EFC. c. to Da/Hr. c. to Hs. EFC1/AT10.8.20. /-/ X.3760.- R+R SWITCHBOX. Further to our EFC5/T6820, in using the R.R. Switch-box with the… | ||
| Scan198 | Log sheet detailing various insulating materials, their suppliers, form, quantity and test status. | ||
| View original record | MATERIAL SUPPLIED BY. ARTICLE COLOUR OR GRADE Nº. REMARKS Diamond fibre Diamond Fibre Co Plates Red. 4 | Under test " " " Natural 4 | " " " Sheets " 2 | " " " " Grey 3 | " Eleonite British Eleonite… | ||
| Scan199 | Performance and potential standardization of the Chloride 6 BXE5 battery. | ||
| View original record | To Ey. from EFC. c. to BY/HEB. c. to Da. c. to Hs. c. to wd. X.607 - CHLORIDE 6 BXE5 BATTERY. Reference yours Ey2/H4.8.20, we have no idea of changing the source from which we obtain the batteries as… | ||
| Scan200 | Ledger detailing various materials, their suppliers, and associated properties or remarks. | ||
| View original record | Header: MATERIAL, SUPPLIED BY, ARTICLE, COLOUR OR GRADE, No, REMARKS Page No: III Row 1: MATERIAL: Lapilac SUPPLIED BY: Lapilac (1919) Lta. ARTICLE: Mouldings COLOUR OR GRADE: Various No: 16 REMARKS:… | ||
| Scan201 | Interconnections for a switchbox wiring scheme and a proposal for adding an inspection lamp socket. | ||
| View original record | To Ba. from EPC. c. to Da/Thr. c. to Hs. EFC5/T6.8.20. X.3760 R.R. SWITCHBOX. Xe In using the R.R. switchbox in the proposed wiring scheme incorporating Smith dynamo, Smith cut-out and R.R. junction… | ||
| Scan202 | Log sheet detailing various materials, their suppliers, quantities, and test usage remarks. | ||
| View original record | MATERIAL SUPPLIED BY ARTICLE COLOUR OR GRADE No REMARKS IV Varnish Asiatic Varnish Co (per Ryseck) "Paedermu" Finishing 1/2 bottle Used on test " " "Armacell" Impregnating 1 bottle " " " "Asiatic" " "… | ||
| Scan203 | Requesting a method to distinguish positive and negative leads on non-armoured heavy current cable. | ||
| View original record | To Da. from EFC. c. Da/Thr. c. By c. By/HEB. X.2778c - MODIFIED GLOVER WIRING. BATTERY CONNECTIONS OF HEAVY CURRENT CABLE. On the modified Glover wiring in which the heavy current cable is not… | ||
| Scan204 | Supplementary list of insulation materials used in the Experimental Department. | ||
| View original record | SUPPLEMENTARY LIST OF INSULATION IN EXPL. DEPT. V MATERIAL Condensite Celoron " " Pyroplex Thermoplex " SUPPLIERS Diamond State Fibre Co. " " Igranic Co. " " ARTICLE Ring Block Plates Mouldings Plug… | ||
| Scan205 | Modifying a component box to improve air circulation and prevent overheating. | ||
| View original record | Contd. -2- EFC2/T4.12.20. accumulates in this box. This ought certainly to be effective provided, as you will be able to confirm for us, that the box itself becomes higher in temperature than the… | ||
| Scan206 | Table detailing proposed material changes for experimental electrical insulation units. | ||
| View original record | X.1109- ISSUE G.34-2140. NOV.34 EXPERIMENTAL INSULATIONS FOR ELECTRICAL UNITS. | Piece. No. | Name. | Present material. | Proposed material. |… | ||
| Scan207 | Report from the British Electrical and Allied Industries Research Association on hard composite insulating materials. | ||
| View original record | X 1109 DIRECTIONS FOR THE STUDY OF HARD COMPOSITE DIELECTRICS. 565 and cellular materials. The output before the war was well over one million tons. The clay is won by washing over the face of the… | ||
| Scan208 | Directions for the study and testing of hard composite dielectrics and insulating materials, including electrical tests and temperature grading. | ||
| View original record | 566 DIRECTIONS FOR THE STUDY OF The adoption of the methods of test given here is strongly commended to manufacturers and to users of these materials, so that a uniform practice in tests of this… | ||
| Scan209 | Specification for testing the resistivity of hard composite dielectrics and insulating materials. | ||
| View original record | HARD COMPOSITE DIELECTRICS (INSULATING MATERIALS). 3. Resistivity (Specific Insulation Resistance). (a) Moulded materials. The resistivity of moulded material shall be tested on a specimen of the… | ||
| Scan210 | Directions for testing the electrical and surface resistivity of various materials such as tubes, sheets, rods, and moulded materials. | ||
| View original record | 568 DIRECTIONS FOR THE STUDY OF If the specimen is made accurately to the dimensions shown in Fig. 3, then ρ = 1.07RL. (d) Tubes. For testing the resistivity of a tube, one end shall be plugged with a… | ||
| Scan211 | Specification for testing the electric strength and toughness of hard composite dielectric materials. | ||
| View original record | HARD COMPOSITE DIELECTRICS (INSULATING MATERIALS). 569 500 volts, and the surface resistivity shall be expressed in megohms for a centimetre square. The materials shall be tested in accordance with… | ||
| Scan212 | Directions for the study and testing of material properties, detailing specimen dimensions and procedures for plastic yield and strength tests. | ||
| View original record | 570 DIRECTIONS FOR THE STUDY OF width of the specimen may be reduced to a minimum of 12 mm, the other dimensions remaining as in Fig. 8. blow may be made by altering the velocity within the limits… | ||
| Scan213 | Page detailing test procedures for hard composite insulating materials, including cross-breaking strength and crushing tests. | ||
| View original record | HARD COMPOSITE DIELECTRICS (INSULATING MATERIALS). 571 hot, the height shall be re-measured. With the weight on, the unsupported end shall not have yielded more than 10 mm. Another specimen shall then… | ||
| Scan214 | Directions for studying materials, detailing test procedures for crushing load, ageing, density, water absorption, and tool wear. | ||
| View original record | 572 DIRECTIONS FOR THE STUDY OF — An initial load of about 100 kilogrammes per sq. cm shall be applied and the initial length of the specimen read under this load, in order to eliminate the… | ||
| Scan215 | Specifications and testing procedures for hard composite dielectrics and insulating materials, including tool wear and chipping tests. | ||
| View original record | HARD COMPOSITE DIELECTRICS (INSULATING MATERIALS). 573 be employed. If a specimen of these dimensions is not obtainable another form of specimen may be used, provided a total length of cut of 1 600… | ||
| Scan216 | Directions for the study and chipping test of hard composite dielectrics. | ||
| View original record | 574 DIRECTIONS FOR THE STUDY OF HARD COMPOSITE DIELECTRICS. (b) Tool. The taper cut shall be made with the following tool :— Form of tool . . . . See Fig. 18. Material . . . . . . Silver steel.… | ||
| Scan217 | Directions for determining the electric strength of fibrous insulating materials. | ||
| View original record | X1109 794 DIRECTIONS FOR DETERMINING THE ELECTRIC STRENGTH OF own trade, all trade, rests is in a feeling of confidence and security, and above all the removal of grandmotherly Government… | ||
| Scan218 | Address to the Western Centre regarding the structure and financing of electricity supply authorities. | ||
| View original record | HIGHFIELD: ADDRESS TO THE WESTERN CENTRE. 793 In other words, they were to do the work all over again, and this fact became so clear in the discussions on the Bill that the part of the Bill proposing… | ||
| Scan219 | Research tests on the electric strength of fibrous insulating materials. | ||
| View original record | FIBROUS INSULATING MATERIALS. 795 gested, however, that for comparative purposes the latter figure should be obtained also. The Director of the E.R.A. will value any criticisms from those who have… | ||
| Scan220 | Directions for determining the electric strength of materials using voltage, time, and temperature curves. | ||
| View original record | 796 DIRECTIONS FOR DETERMINING THE ELECTRIC STRENGTH OF The electric strength shall be given in the form of a series of curves in which the actual breakdown voltage, R.M.S. value (0·707 of the maximum… | ||
| Scan221 | Technical specification page detailing testing procedures for fibrous insulating materials. | ||
| View original record | FIBROUS INSULATING MATERIALS. 797 For a selected number of time values on the time-voltage curves a temperature-voltage curve should be drawn similar to Fig. 2. 8. THICKNESS-VOLTAGE CURVES. (a) When… | ||
| Scan222 | Directions and diagrams for determining the electric strength of materials in tube, cylinder, and sheet form. | ||
| View original record | 798 DIRECTIONS FOR DETERMINING THE ELECTRIC STRENGTH OF but the radius at the edge must not exceed 1/32 in. (see Fig. 4). (b) For Small Tubes (up to about 3 in. diameter). The outside electrode shall… | ||
| Scan223 | Page outlining tests on fibrous insulating materials, specifically focusing on electric strength. | ||
| View original record | FIBROUS INSULATING MATERIALS. 799 straight line, in two opposite edges of the material. Insert pieces of 1/16 in. brass rod with square ends, as shown in Fig. 8, thereby making the path through the… | ||
| Scan224 | Directions for determining the electric strength of materials, including conditioning samples and test apparatus. | ||
| View original record | 800 DIRECTIONS FOR DETERMINING THE ELECTRIC STRENGTH OF To obtain some idea of the breakdown voltage of the material a test should be made by increasing the voltage as fast as is consistent with… | ||
| Scan225 | Test setup and results for determining the electric strength and temperature rise of fibrous insulating materials under A.C. voltage stress. | ||
| View original record | FIBROUS INSULATING MATERIALS. 801 VARIABLE A.C. SUPPLY HIGH RESISTANCE EARTH SHORT C'T'G SWITCH 52 VOLT BATTERY THERMOMETER COLD JUNCTION SPECIMEN 5" X 4 1/2" EUREKA COPPER TINFOIL 4" x 3 1/2" WEIGHT… | ||
| Scan226 | The method for testing the electric strength of fibrous insulating materials. | ||
| View original record | 802 ELECTRIC STRENGTH OF FIBROUS INSULATING MATERIALS. 0·027 in. covered copper wire and the eureka to 3 ft. 8 in. of 0·018 in. covered eureka wire. From here copper flexible leads are connected to… | ||
| Scan227 | Request for a report on machining tests of insulating materials and for ebonite to construct an insulating table. | ||
| View original record | To RHC. from EFC. X1109 FC2/T11.12.22. X.1109 - INSULATING MATERIALS This is to confirm that you will now let us have a report on the machining tests of insulating materials; also let us have back the… | ||
| Scan228 | Instructions for a breakdown voltage test on insulating materials such as bakelite. | ||
| View original record | RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 X.1109. ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: E.F.C. Order No: P.B.76. Customer's No. X 1109 X3513 Breakdown Voltage Test of Insulating Materials. This… | ||
| Scan229 | Instructions and results for a voltage breakdown test on various insulating materials. | ||
| View original record | RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: E.F.C. Order No: P.B.76 (2) Customer's No.: X 1109 X 3513 and the faces so adjusted as to get the pressure as near… | ||
| Scan230 | Test results and observations on the electrical breakdown of various materials. | ||
| View original record | RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: E.F.C. Date: Jan 26th 1923 Order No: P.B. 76 (3) Customer's No. X.1109 X.3515 Table Data: 5. Bakelite .044 151.0… | ||
| Scan231 | Test report on electrode failures, noting unsatisfactory contact pressure and arcing at high voltage. | ||
| View original record | ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: E.E.C. Order No: PB 76 (4) Customer's No. X 1109 X 3515 being reached. In nearly every case the puncture was found to be near the circumference of the area… | ||
| Scan232 | Various tests of insulating materials, including machining and strength tests. | ||
| View original record | To R & E. from EFC. c. CJ. & PN c. Ry. & EP. c. Rg. & Da. X1109 EFC2/T30.1.23. X3513 X1109 X2494 VARIOUS TESTS OF INSULATING MATERIALS. Below is a report of a number of tests of insulating materials… | ||
| Scan233 | Comparative loading and high voltage breakdown tests on Stabalite and Beldalite materials. | ||
| View original record | Contd. -2- EFC2/T30.1.23. The three ends of the fractures specimens are sent to Mr. Royce for examination, the names of the respective materials being scratched on the pieces. (3) Comparative Loading… | ||
| Scan234 | Electrical breakdown voltage tests on various insulating materials. | ||
| View original record | Contd. -3- EFC2/T3 01.23. The No. of Sample. Material. Thick-ness. Voltage Reading. Trans. Ratio. Breakdown Voltage. Volts per mil. 1. Oiled silk. .002" 126.0 25.0 3,150 1,575 2. Diamond Fibre. .013"… | ||
| Scan235 | The test results and analysis of various material specimens, discussing breakdown voltage. | ||
| View original record | Contd. -4- EFC2/T30.1.23. Nos. 5 & 6 were canvas impregnated specimens. The result on No.5 is low owing to previously existing cracks in the material. Specimen No.7 was made up with a fibre core and… | ||
| Scan236 | The study and testing of untreated electrical insulating papers for purposes other than cable manufacture. | ||
| View original record | X1109 DIRECTIONS FOR THE STUDY OF ELECTRICAL INSULATING PAPERS. 657 DIRECTIONS FOR THE STUDY OF ELECTRICAL INSULATING PAPERS (UNTREATED) FOR PURPOSES OTHER THAN THE MANUFACTURE OF CABLES.* (REPORT… | ||
| Scan237 | Index and preface for a report on the study of paper materials and their testing methods for electrical insulation. | ||
| View original record | 658 DIRECTIONS FOR THE STUDY OF Page Japanese Tosa tissue paper, definition of . . 660 Jute fibre, use of, in paper . . . . 659 Jute paper, definition of . . . . . 659 Kaolin, use of, in loading . . .… | ||
| Scan238 | List of definitions for various types of untreated electrical insulating papers. | ||
| View original record | ELECTRICAL INSULATING PAPERS (UNTREATED). 659 I. DEFINITIONS. In order to avoid the ambiguity associated with many of the terms in use in the paper trade, it is recommended that in defining papers for… | ||
| Scan239 | Guide to the study of different types of Japanese tissue paper and their manufacturing processes. | ||
| View original record | 660 DIRECTIONS FOR THE STUDY OF Sulphite Imitation Japanese Tissue Paper. The term "Sulphite Imitation Japanese Tissue Paper" denotes soft porous tissue paper made from wood-pulp by the sulphite… | ||
| Scan240 | Specification detailing test procedures for untreated electrical insulating papers. | ||
| View original record | ELECTRICAL INSULATING PAPERS (UNTREATED). 661 (4-12) of polished steel and compressed paper or cotton, arranged alternately, the former being heated. The paper is usually damped before passing through… | ||
| Scan241 | Directions for testing the physical and chemical properties of paper. | ||
| View original record | 662 DIRECTIONS FOR THE STUDY OF This value is defined as the bursting strength of the paper. The bursting strength of the paper shall be measured at ten positions equally spaced diagonally across a… | ||
| Scan242 | Diagram of an apparatus used for measuring the tearing strength of untreated electrical insulating papers. | ||
| View original record | ELECTRICAL INSULATING PAPERS (UNTREATED). 663 Dashpot Sample Bull-Dog Clip hole 1/4" diam SECTION AT AB END VIEW OF PAPER LOOKING IN DIRECTION OF ARROW. Drive {preferably geared motor} FIG.… | ||
| Scan243 | Page detailing chemical analysis procedures for materials, likely paper, including tests for sizing, mineral ash, and nitrogenous content. | ||
| View original record | 664 DIRECTIONS FOR THE STUDY OF Cut up 30 to 40 grammes of the dried sample into pieces, weigh off duplicate lots of 10 grammes each, introduce each into a one-quarter litre flask, and add to each 200… | ||
| Scan244 | Specification outlining testing procedures for untreated electrical insulating papers. | ||
| View original record | ELECTRICAL INSULATING PAPERS (UNTREATED). from every roll, or on separate sheets from each ream:— (a) The paper shall be saturated with a dilute solution of hydrochloric acid, specific gravity… | ||
| Scan245 | Directions for studying paper, including apparatus for measuring porosity and flash testing for conducting particles. | ||
| View original record | 666 DIRECTIONS FOR THE STUDY OF The last three ingredients are mixed together and the zinc chloride added. The insoluble matter is allowed to settle at least overnight and the supernatant liquid… | ||
| Scan246 | Schedule of uses, tests, and suitable types of untreated electrical insulating papers. | ||
| View original record | ELECTRICAL INSULATING PAPERS (UNTREATED). 667 IV. SCHEDULE OF USES, TESTS AND PAPERS. A cross indicates that the test as described in the Specification shall be carried out. Uses Tests GENERAL TESTS… | ||
| Scan247 | Page from a study guide showing microscopic views of different fibers. | ||
| View original record | 668 DIRECTIONS FOR THE STUDY OF FIG. 5.—(a) Rag (Cotton and Linen). FIG. 5.—(b) Manilla and chemical wood-pulp. | ||
| Scan248 | Page showing microscopic images of fibres used in untreated electrical insulating papers. | ||
| View original record | ELECTRICAL INSULATING PAPERS (UNTREATED). 669 Fig. 5.—(c) Jute and chemical wood-pulp. Fig. 5.—(d) Chemical wood-pulp. Fig. 5.—(e) Mechanical wood-pulp. Fig. 5.—(f) "Paper mulberry." | ||
| Scan249 | Method for testing paper direction and the proceedings of two institutional meetings. | ||
| View original record | 670 PROCEEDINGS OF THE INSTITUTION. APPENDIX. METHOD FOR DETERMINING THE DIRECTION OF "LENGTH" AND "WIDTH" OF PAPER, FOR USE IN CARRYING OUT THE TESTS SPECIFIED IN CLAUSES 4, 5, 6 AND 7. (See Fig. 6.)… | ||
| Scan250 | Product data sheet for 'ABCO' Tan Fibre asbestos packing from Arthur Bates & Co., Ltd. | ||
| View original record | X.1109 TELEPHONE No. 5501 CITY. ON ADMIRALTY LIST. ESTABLISHED 1879. Telegrams "ARTHUR BATES," Manchester. MS ASBESTOS ARTHUR BATES & CO., Ltd. 31 DUTTON STREET, Manchester, "ABCO" TAN FIBRE. RECEIVED… | ||
| Scan251 | Test report on the properties of Redmanol Varnish. | ||
| View original record | RR 238 (750 BKS.) (SH57.29-6-20.) MP 224358 X. 1109. ROLLS-ROYCE LTD. INSTRUCTIONS. To E.F.C. Order No. AC.4. Customer's No. 1 6 March 1924. X.3513. Redmanol Varnish. A sample of this varnish, made by… | ||
| Scan252 | The properties and stability of a varnish sample under various test conditions. | ||
| View original record | RR 238 (T50 WKS.) (SH57. 29-6-20.) MP 224356 ROLLS-ROYCE LTD. INSTRUCTIONS. To____________________________________ 19__ Order No._________________ Customer's No. 2 at 100°C. Above this it turned a… | ||
| Scan253 | Instruction sheet detailing the flammability characteristics of a varnish. | ||
| View original record | RR 238 (150 BKS.) (BH57. 29-6-20.) MP 224358 ROLLS-ROYCE LTD. INSTRUCTIONS. To Order No. Customer's No. 3 19 Inflammability. A small amount of the varnish in the liquid state burns characteristically… | ||
| Scan254 | Further tests on Redmanol Varnish after a baking process. | ||
| View original record | ROLLS-ROYCE LTD. INSTRUCTIONS. To: EFC Order No. AC. 15. Customer's No. X Further Tests on Redmanol Varnish. The sample of Redmanol varnish reported in AE.4, 6-III-24, has been re-tested; this time… | ||
| Scan255 | Instruction sheet noting the discontinuation of a test due to the inability to check water absorption. | ||
| View original record | RR 238 (150 BKS.) (SH57. 28-8-20.) MP 224388 ROLLS-ROYCE LTD. INSTRUCTIONS. To ________________________ 19___ Order No.________________ Customer's No. 2 water absorbed could not be checked. The test… | ||
| Scan256 | Request to test two samples of insulating sleeving ('Sistoflex' and 'Derby') under the bonnet of an experimental car. | ||
| View original record | X1109 C. EFC. BY/RD/ML/14.6.24. RE INSULATING SLEEVING. We send you two samples of Insulating Sleeving - "Sistoflex" and "Derby". Would you give these a test by suspending them under the bonnet of one… | ||
| Scan257 | Request for a report on a sample of insulating sleeving. | ||
| View original record | X.1109 To Hs. C. EFC. BY/RD3/ML1 2.8.24. RE INSULATING SLEEVING. We should be pleased to receive your report on the sample of Insulating Sleeving which we sent you on the 14.6.24. [Illegible circular… | ||
| Scan258 | Potential use of a new moulding material called Celastine for electrical fittings. | ||
| View original record | S/W. To Hives. X.1109. CWB2/DEB2-9-1924. I had occasion to visit the British Celanese Co. the other day whose works, as you know, are at Sponden, and whilst there found they were moulding their… | ||
| Scan259 | Properties and potential use of a material sample called 'Black Sheet Redmanol'. | ||
| View original record | X. 1109 EFC. Mr. Brock. BY8/H. 27. 5. 24. I am handing you herewith some material supplied to us by the Redmanol Company. They call it "Black Sheet Redmanol"; it does not appear to have been made up… | ||
| Scan260 | Sales letter from The Standard Insulator Co Ltd promoting insulating sleeving and enamelled copper wire. | ||
| View original record | X. 1109. THE STANDARD INSULATOR CO LTD MANUFACTURERS OF INDIA RUBBER PRODUCTS. S (LOGO) TRADE MARK TELEGRAMS: HIVOLTSIT, WESTCENT, LONDON. TELEPHONE: MUSEUM 5978. TELEPHONE TO WORKS: WILLESDEN 1923.… | ||
| Scan261 | Price list for 'Hivoltsit' insulating sleeving for automobile cables. | ||
| View original record | THE STANDARD INSULATOR CO., LTD., MANUFACTURERS OF INDIA RUBBER PRODUCTS. TELEGRAMS: HIVOLTSIT, WESTCENT, LONDON. TELEPHONE: MUSEUM 5978. 41. RATHBONE PLACE, OXFORD STREET, LONDON, W.1. WORKS: 78A,… | ||
| Scan262 | Covering letter for a sample of Flexible Insulating Sleeving from Messrs. McLeod & McLeod. | ||
| View original record | E.F.C. X1109 WD/MS2/P.21.11.25. Please receive herewith a sample of Flexible Insulating Sleeving, together with letter and price list from Messrs. Mc.Leod & Mc.Leod, 329 High Holborn, London.W.C.1.… | ||
| Scan263 | Sales letter from McLeod & McLeod regarding flexible insulating sleeving. | ||
| View original record | TELEPHONE: HOLBORN 1092. TELEGRAMS: MACLEODIUS, HOLB, LONDON. CABLES: MACLEODIUS, LONDON. CODE: A.B.C. 5TH EDITION. BANKERS: LLOYDS BANK LIMITED. McLEOD & McLEOD. MANUFACTURERS REPRESENTATIVES &… | ||
| Scan264 | Price list for 'Doelcam' varnished flexible insulating sleeving. | ||
| View original record | P R I C E S F O R "DOELCAM" VARNISHED FLEXIBLE INSULATING SLEEVING QUALITY 100/II WALL 0.5 m/m 0.75 m/m ... 17/6d 1 m/m ... 18/3d 1.5.m/m ... 19/- 2 m/m ... 20/- 2.5 m/m ... 22/6d 3.5 m/m ... 23/6d… | ||
| Scan265 | Request to Holder-Harriden for a catalogue of Insulating Beads. | ||
| View original record | X1109 Expl: Dept: Hs/RmS/LG. 16th. Feb. 1926. Holder-Harriden, 1-2, Chiswell Street, London E.C. Dear Sir, Will you please forward your Catalogue of Insulating Beads. Thanking you in anticipation.… | ||
| Scan266 | Order for insulating beads from Holder-Harriden Ltd. | ||
| View original record | To Wd/Ms. from Hs/Rm. X1109 Hs/Rml/LG23. 2. 2. 26. Will you please order for us from Messrs. Holder-Harriden Ltd., 1 & 2 Chiswell Street, London E.C.1. :- ½ lb. Insulating beads - size B. at 2/6d. per… | ||
| Scan267 | Procuring samples of 'Marconite' insulating varnish for assessment. | ||
| View original record | To ROY. from EFC. c. Mr. Brock. X1109 EFCS/T2.2.27. MARCONITE VARNISH. With reference to the correspondence you have sent us with regard to a special Marconite insulating varnish, we consider that two… | ||
| Scan268 | Use of Marconite Varnish, advising against changing from the current synthetic varnish without further testing. | ||
| View original record | R.R. 235c (to T.)(S.H. 988. 22/2/21.) Bm. 5988/2. X.1109 Mr. Brock. Mr. Roy. c EFC. Wor6/T.25-3-27. MARCONITE VARNISH Referring to your pencil note undated, and EFC8/T.2-2-27, please note BY's… | ||
| Scan269 | Rectifying unit for high voltage D.C. insulation testing. | ||
| View original record | To R. from EFC. c. BJ. E. PN. c. Ba. By.Hy. c. Wor. X1109 EFC1/T29.4.27. + X3573 X1109 X1589 (Struck through) RECTIFYING UNIT FOR HIGH VOLTAGE D.C. TESTING OF INSULATION. We have made up such a… | ||
| Scan270 | Continued description of a high voltage testing apparatus for insulation using a valve, condensers, and a trembler coil. | ||
| View original record | -2- Contd. thing (battery included) may be self-raised to a high D.C. potential. The valve readily permits the flow of positive electricity from plate to filament i.e. negative electrons from filament… | ||
| Scan271 | Continued report on apparatus and methods for high voltage insulation testing. | ||
| View original record | -3- Contd. the time to charge up will be considerably increased, but as the safe voltage of this condenser is smaller, the spark gap must be smaller. This condenser, however, acts as a very suitable… | ||
| Scan272 | The final development of an apparatus for insulation testing on redmanol coil cases. | ||
| View original record | -4- Contd. limiting factor in the supply to the valve, and so far as we have used the apparatus at present the trembler coil satisfactorily supplies all H.T. requirements. The rectifying capacity of… | ||
| Scan273 | Diagram of a high tension rectifying unit for H.T.D.C. tests of insulation. | ||
| View original record | DIAGRAM OF HIGH TENSION RECTIFYING UNIT FOR H.T.D.C. TESTS OF INSULATION. H.T ~ INPUT A.C. OR IMPULSIVE POSITIVE VOLTAGE RECTIFYING VALVE OUTPUT POSITIVE D.C. FIL: RES: F- LINK RESERVOIR CONDENSER D… | ||
| Scan274 | Blank page with a Print Room date stamp. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM 29 APR 1927 DERBY. | ||
| Scan275 | Circuit diagram for high tension direct current (HTDC) insulation tests using a trembler coil and rectifying valve. | ||
| View original record | INTERMITTENT POSITIVE H.T. MAIN., DIAGRAM OF CONNECTIONS, FOR, H.T.D.C. TESTS OF INSULATION, WITH, TREMBLER COIL & H.T. RECTIFYING VALVE, R.R. TREMBLER COIL., H.T. +, C, E, H.T. RECTIFYING UNIT, H.T.… | ||
| Scan276 | The co-efficient of friction for various materials under dry and oily conditions. | ||
| View original record | To R. from Hs/Tsn. c. to BJ. Wor. c. to RG. L. c. to DA. BY. c. to OY. X1109 Hs/Tsnl/LG19.10.27. CO-EFFICIENT OF FRICTION. X4222 We have tested the following materials both dry and oily in order to… | ||
| Scan277 | The co-efficient of friction for various materials and viscous friction in a spring drive damper. | ||
| View original record | contd :- -2- here we increased the pressure up to 22 lbs/sq.in. The co-efficients did not vary very much, with pressure, what variation there was was inversely proportional to the pressure. Material.… | ||
| Scan278 | Test report on 'Ebony Sindanyo' insulating material. | ||
| View original record | EFC WC.55 X1109 20.12.27. "EBONY SINDANYO" INSULATING MATERIAL. A sample of the above has been submitted to us for test and we give below the results obtained. (1) Machining tests. Mr. Coverley… | ||
| Scan279 | Letter regarding the unsuitability of 'Ebony Sindanyo Insulating Material' following a test. | ||
| View original record | To BY. from EFC. EFC7/T21.12.27. EBONY SINDANYO INSULATING MATERIAL. Please find attached copy of my assistant's report on the above, a sample of which you submitted to us for test. You will see that… | ||
| Scan280 | Inquiring about the composition of Redmanol and Mouldensite mouldings and the potential for non-tracking alternatives. | ||
| View original record | To ROY. from EFC. X1109 EFC5/T14.3.28. REDMANOL AND MOULDENSITE MOULDINGS AS USED BY OURSELVES. X3573 As a matter of technical interest in connection with the question of "tracking", we should like to… | ||
| Scan281 | Tests on new insulating papers from Symons & Co. for ignition coils and condensers, proposing further experimental production. | ||
| View original record | To Rpy. from EFC. c. By. X/1109 EFC3/T9.5.28. INSULATING PAPERS FOR IGNITION COILS & CONDENSERS. Sample papers have been submitted to us by ROY., obtained from a British source, viz.Messrs. Symons &… | ||
| Scan282 | Temperature leakage tests conducted on various types of insulating papers. | ||
| View original record | EFC. PD24. May 8th 1928. TEMPERATURE LEAKAGE TESTS ON INSULATING PAPERS. Tests have been made on some specimens of insulating papers; making a comparison between them with respect to leakage at… | ||
| Scan283 | Comparing a new material against the standard and recommending testing for coils and condensers. | ||
| View original record | -2- Contd. It has the appearance of being drier, more crisp, and more likely to crack with handling than the standard material, which seems more flexible. It is the opinion of production (Mr. Brock),… | ||
| Scan284 | Comparative tests on varnished and waxed papers for use in ignition coils and condensers. | ||
| View original record | To Roy. from EFC. c. EY. X1109 EFC3/T7.6.28. X8710 X8700 Further to our EFC3/T9.5.28 under cover of which we reported (PB24) results of some comparative tests of standard coil and condenser paper and… | ||
| Scan285 | Tests conducted on different insulating papers to compare their electrical properties and performance under heat. | ||
| View original record | EFC. PB.26. May 31st. 1928. TESTS ON INSULATING PAPERS. A number of tests have been carried out on insulating papers, using samples of the standard (American) varnished paper, and varnished and waxed… | ||
| Scan286 | The electrical properties and dielectric strength of different paper types after repeated heat testing. | ||
| View original record | -2- Contd. (2) The above tests were repeated, but this time readings were also taken as the temperature fell. An abridged table of results is given below, shewing the initial conductance for each… | ||
| Scan287 | Comparison of varnished and waxed paper for use in condensers and ignition coils. | ||
| View original record | -3- Contd. In each case the result is the average of two tests. From these, heating appears to have practically no bad effect on the dielectric strength. The varnished paper obtained from Symons is… | ||
| Scan288 | Correspondence on the subject of insulation impregnation, copied from The Electrical Review. | ||
| View original record | X1109. CORRESPONDENCE ON THE SUBJECT OF INSULATION IMPREGNATION COPIED FROM THE ELECTRICAL REVIEW. "I was greatly interested in the article by Mr. A.C. Dunlap on "Insulation Impregnation" in your… | ||
| Scan289 | The process and considerations for drying and impregnating articles with varnish and compounds. | ||
| View original record | -2- Contd. Some woods are much easier to penetrate than others, but as the wood is usually of much greater thickness than the covering of the wires a greater pressure is required to ensure penetration… | ||
| Scan290 | The use of synthetic and non-synthetic varnishes for insulating electrical windings. | ||
| View original record | -3- Contd. and the introduction of nitrogen in other cases, but both of these patents were allowed to lapse, as it was found that good results could be found in other ways. Good insulating varnishes… | ||
| Scan291 | Methods for the impregnation of electrical windings and other materials, comparing different techniques. | ||
| View original record | -4- "Referring to the letter under the above heading in the "Correspondence" columns of the current issue of the Electrical Review, I am very pleased to note that Mr. Brown is in such complete… | ||
| Scan292 | Correspondence discussing the M.A.X.E.I. patented process and the use of synthetic varnishes for impregnating windings. | ||
| View original record | -5- Contd. I am not surprised that the patents covering the admission of oxygen or ozone during the impregnating process were allowed to lapse, as I consider this to be most undesirable. The… | ||
| Scan293 | Page of correspondence discussing methods of varnish impregnation for coils, comparing dipping, vacuum, and vacuum-pressure systems. | ||
| View original record | -6- Contd. "I have read with interest the recent correspondence on this subject and have been disappointed to note that it has been conducted in the main by correspondents interested more particularly… | ||
| Scan294 | Varnish impregnation methods for coils, addressing moisture, solvent recovery, and temperature control. | ||
| View original record | -7- I am in a position to state that more than one manufacturer has found that in the absence of special air-drying systems it is best to eliminate the compressed-air process, as the moisture… | ||
| Scan295 | Discussion paper on the topic of varnish insulation for the electrical industry. | ||
| View original record | -8- It will be generally admitted that the subject of varnish insulation is of great interest and importance to the electrical industry, and as there must be many of your readers in possession of a… | ||
| Scan296 | Vacuum systems for moisture removal and appropriate temperature indicators. | ||
| View original record | -9- Contd. should not be of such a nature as to require expulsion. As regards the vacuum, a figure of 30 in. has been mentioned as desirable; there appears to be no reason for this other than to… | ||
| Scan297 | Instructions detailing the results of bench tests on paraffin wax filled coils. | ||
| View original record | RR 228 (150 BKS.) (DS 481-9-12-24) MP 206975 X1109 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.7.C. Date: 29 - 9 - 1928 Order No.: WD1A. Customer's No.: X 8710 Paraffin wax filled coils. We have now… | ||
| Scan298 | Investigation into coil failures caused by overheating of the immersion wax. | ||
| View original record | ROLLS-ROYCE LTD. INSTRUCTIONS. RR 238 (150 BKS.) (OB 461-8-12-24) MP 200975 (2) To Order No. (WD14 cont'd) Customer's No. 19 the spark gaps. We suspected that the wax when the coil was immersed had… | ||
| Scan299 | Instructions for testing coils by immersing them in paraffin wax and performing subsequent leakage tests. | ||
| View original record | RR 228 (150 BKS.) (DD 461-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. (3) To Order No. (WD14 contd) Customer's No. noted, the coils now sparking quite regular on the gaps. The coils were then… | ||
| Scan300 | The comparison and electrical properties of standard coils versus paraffin wax-filled coils. | ||
| View original record | RR 23B (150 BKS.) (DD 481-B 12 24) MP 3C6975 ROLLS-ROYCE LTD. INSTRUCTIONS. (4) To Order No. (WD14 contd) Customer's No. of (a) no leakage was observed and the wax remained white as when new, but in… | ||
| Scan301 | Leakage tests on insulating paper after being heated to 200°c for six hours. | ||
| View original record | RR 238 (150 BKS.) (DB 461-8-12-24) MP 306975 X1109. ROLLS-ROYCE LTD. INSTRUCTIONS. To EFC Order No. PD 39 Customer's No. June 26th 1929 X1109. Leakage Tests on Insulating Paper After Heating at 200°c… | ||
| Scan302 | Test report detailing the effects of high voltage testing on paper insulation. | ||
| View original record | RR 239 (150 BKS.) (D9 461-8-12 24) MP 300975 ROLLS-ROYCE LTD. INSTRUCTIONS. To 19 Order No. PD 39 (2) Customer's No. The applied pressures were between 13,000 and 13,500 volts, but with each paper no… | ||
| Scan303 | The comparative tests of varnished and waxed insulating papers for ignition coils and condensers. | ||
| View original record | By. from EFC. c. Roy. X1109. EFC2/AM.8.7.29. X.1109. VARNISHED AND WAXED INSULATING PAPERS FOR IGNITION COILS AND CONDENSERS. We have now completed the third and last series of comparative tests on… | ||
| Scan304 | Page 2 of a report on electrical and mechanical tests of varnished and waxed papers after heating. | ||
| View original record | -2- contd. The third series of tests described in the report PD39 now attached, deals with electrical leakage in these papers under high pressure after 6 hours continuous heating at 200°C. The… | ||
| Scan305 | Choice between Oil Paper and Waxed Paper for insulating ignition coils and condensers for the 'K' Series Chassis. | ||
| View original record | -EFC. X/109 ROY/GEA15/EB2.9.29. X.1109. VARNISHED AND WAXED INSULATING PAPERS FOR IGNITION COILS AND CONDENSERS. We note from verbal conversation with you on Friday last, that you are not yet able to… | ||
| Scan306 | On the testing and standardization of varnished and waxed insulating papers for ignition coils and condensers. | ||
| View original record | X1109. Roy/GEA. from EFC. EFC5/AD19.9.29. X.1109. VARNISHED AND WAXED INSULATING PAPERS FOR IGNITION COILS AND CONDENSERS. In answer to your Roy/GEA15/EB2.9.29, the position is that we have several of… | ||