Rolls-Royce Archives
| Identifier | Entry | ||
| scan 001 | Method for stress testing valve gear on new engines by adjusting the valve lash. | ||
| View original record | COPY. To Wor. for EH from R. c. to J. c. to EP. R11/B231115. November 23rd 1915. RE - VALVE GEAR. With reference to the valve gear on our aero and other engines, it would be advisable in testing a new… | ||
| scan 002 | Engine design considerations for the 'After-The-War Chassis'. | ||
| View original record | X 2464 To Hy. from R. c. to Nas c. to By. c. to Hs. c. to Wor. c. to EP. c. to J. By/P. X.2565. Re - After-The-War Chassis. X.682 R6/W31016. 3/10/16. 7 With reference to your memo of the 29th ulto. re… | ||
| scan 003 | Extract regarding the specification for valves and valve springs on the 40/50 HP chassis. | ||
| View original record | X.276A. Extract from RA/G261118. 1000 - 40/50 H.P. CHASSIS. (10) VALVES AND VALVE SPRINGS. X.29838 X.2563 The valves are to be of the light type, and the valve springs giving ample pressure to permit… | ||
| scan 004 | Extract detailing an order for light type valves, stronger springs, and a higher lift cam for a 45/50 HP Chassis. | ||
| View original record | X, 2764. Extract from EY6/P291118. RE 1000 45/50 H.P. CHASSIS. (10) VALVES & VALVE SPRINGS. Y.2983 X 2563 Light type valves with stronger springs have been ordered up and in addition the higher lift… | ||
| scan 005 | Alterations to be made to the 40/50 HP chassis for a batch of 500 units. | ||
| View original record | To Wor. from E. c. to EY. c. to DA. c. to EH. c. to EP. L.2464 8th January 1919. E2/48119. RE 40/50 H.P. CHASSIS Please find attached a specification of the alterations to be made to the 40/50 H.P.… | ||
| scan 006 | Index outlining alterations and experimental work for the 40/50 HP present type chassis. | ||
| View original record | To Ry. from R. c. to Da. c. to EH. c. to CJ. c. to Wor. c. to EP. X.2565.RE ALTERATIONS TO 40/50 HP PRESENT TYPE CHASSIS. OBJECT:- The object of this report is to set out as far as possible the… | ||
| scan 007 | Design and materials for valves, valve gear, and related engine components. | ||
| View original record | BY. DA. & EH. *from R. -3A- R7/G181218 Contd. (1A) VALVES AND VALVE GEAR. X 2464 x 2934/8 The aero type valves with 30° seats, the higher lift cams, and rockers with large rollers, fitted to chassis 7… | ||
| scan 008 | List of components used in the assembly of chassis 1. E.X. X.2565. | ||
| View original record | X.5464 extract from - RHC1/LG30.6.19. RE CHASSIS 1. E.X. X.2565 The above chassis is now complete and it has been assembled as follows:- "E" SECTION. to S.S.No. REMARKS X.3431. Crankcase & Bearings.… | ||
| scan 009 | Instruction to produce valve grinding tools for the 40/50 chassis for experimental trials and production quotations. | ||
| View original record | R.R. 235 a 1200 T (S.F. 673, 22-5-19) G. 2376 To: [Redacted] c. to EFC. BY/Shn2/ML.18.8.19. RE 40/50 CHASSIS - VALVES & TAPPETS. SEC:X 2764. Please receive herewith:- E.17945 - Valve Grinding Tool… | ||
| scan 010 | Recurring failures of valve springs and requesting a plan to address the potential weakness. | ||
| View original record | EH. COPY. EP8/F13.11.19. BROKEN VALVE SPRINGS. X.2464 With reference to the Repair Dept's report re. valve springs breaking on chassis 58-NA (New York Trials car), this confirms complaints ~~on… | ||
| scan 011 | Cases of broken valve springs and tappet springs in post-war cars. | ||
| View original record | X2764 c. to EH. EP7/F13.b.20. RE. BROKEN VALVE SPRINGS. With reference to your enquiry re the above, I only know of two cases of this taking place on all our post-war cars. On inspection of one of the… | ||
| scan 012 | Comparison of the turning evenness between a 12-cylinder Packard camshaft and a standard 6-cylinder camshaft. | ||
| View original record | X.2464 To R. from Hs. c. to CJ. c. to Bn. c. to E. c. to Da. Hs3/LG20.4.20. X.435. CAMSHAFTS. X.3423. ----- --------- X.2764. ----- We have been comparing the evenness of turning the 12-cylinder… | ||
| scan 013 | Investigation into the cause of engine rattles, focusing on the camshaft, crankshaft and timing gears. | ||
| View original record | Contd. -2- Hs3/LH20.4.20. We have taken an engine which is free from rattles, we took the magneto off altogether so as to be free from any noise caused by the uneven turning of the magneto. We… | ||
| scan 014 | Standard dimensions and limits for oversize valves. | ||
| View original record | To Hm. from R. Copy to CJ. " " Bn. " " Hs. X4432 R16/G12.6.20. 4432 X.2764. RE OVERSIZE VALVES. With reference to your memo HM24/W4.6.20, supposing we make our limit .025", this being one of our… | ||
| scan 015 | Different patterns of lubricators and felt-like glands for valve guides. | ||
| View original record | G.R. 585A (100 T) (S.G. 645. 10-5-20) G. 2618 To Hs. from R. Copy to CJ. x 2764 R1/G21.7.20. X. 2764. X. 3315. RE VALVE GUIDES. We have noticed several patterns of lubricators and felt-like glands. We… | ||
| scan 016 | Wear, noise, and required clearances in the tappet mechanism. | ||
| View original record | BY. from EP. c. to Wr. c. to Sft. c. to Hs. g.F.C. X.2764 EP29/F6.8.20. RE. WEAR ON TAPPET MECHANISM. X.2764 With reference to my recent complaint on the above, EP23/F20.7.20, I notice you have… | ||
| scan 017 | Letter forwarding a circular about the 'Apex' Priming & Compression Valve from W. Edward Storey. | ||
| View original record | Hs. from Wd. e. to Da e. to By. c. to Ms. HS RECEIVED OCT 12 1920 X2764 ? Wd6/NJ12.10.20. "Apex" Priming & Compression Valve. W. Edward Storey, M.I.M.E. Granville House, Arundel Street, London, W.C.2.… | ||
| scan 018 | Sales letter from W. Edward Storey proposing the 'APEX' Priming & Compression Valve. | ||
| View original record | W.EDWARD STOREY, M.I.Mech. E. GRANVILLE HOUSE. Engineer & Merchant. ARUNDEL STREET, LONDON. W.C.2. Dealer in Motor Cars and Accessories. Tele { (phone-) City 1030. { (grams-) Edstorion, Estrand,… | ||
| scan 019 | Product information sheet for 'The Apex' priming and compression valve. | ||
| View original record | THE "APEX" PRIMING and COMPRESSION VALVE FOR INTERNAL COMBUSTION ENGINES FULL SIZE OF FITTING. One of those detail improvements which help to make the PERFECT CAR As compared with the usually adopted… | ||
| scan 020 | Valve guide wear on the 40/50 engine and potential lubrication solutions. | ||
| View original record | To R. from Hs. c. to CJ. c. to Bn. c. to E. c. to Da. c. to By. c. to EP. X2464 X4432 Hs5/LG22.11.20. X.2764. X.3315. ------ WEAR ON VALVE GUIDES. - 40/50 ENGINE. X.3763. X.3764. ------ On the 40/50… | ||
| scan 021 | Recurring tappet spring breakages and proposals for investigation. | ||
| View original record | BY. from EP. c. to HS. c. to SFT. c. to Wd. X 2764 Hs RECEIVED DEC 4 1920 A.T. EP19/F3.12.20. RE. TAPPET SPRING BREAKAGES. We are at present having trouble with the breakage of these springs. This is… | ||
| scan 022 | The applications and potential of Bakelite for various car components. | ||
| View original record | X 2464 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… | ||
| scan 023 | The serious issue of faulty tappets being manufactured with faces that are out of square. | ||
| View original record | By. c. to Sft. c. to Ea. c. to HNV (c. HPC) EP10/F1.1.21. X 2464 AT A.T. X 2464 RE. FAULTY TAPPETS. I must again bring forward the seriousness of the condition of the present tappets, from which we… | ||
| scan 024 | Valve mechanism noise caused by valve spring vibration. | ||
| View original record | K.R. 225A (100 T) (S. H. 705. 10-12-20) G. 2947 X,2764. ns. from EP. c. to BY? c. to Da. EP6/F8.1.21. X.2764 X.3777 Hm. has brought to our attention certain valve mechanism noises which can be heard… | ||
| scan 025 | New machining and inspection methods to address faulty tappets. | ||
| View original record | To HP. To EV. To D. To Hc. To E.T.C. from Sft. SFT9/M10.1.21. X.2764 RE. FAULTY TAPPETS. In reply to your memo. EP10/M.1.21. We have introduced new methods of machining and inspection, and I am… | ||
| scan 026 | Instruction detailing modifications to the Air Valve Cover, including machining and polishing. | ||
| View original record | X.2764 Extract from BY5/P18.7.21. X.3545. 3. Air Valve Cover. Instructions were sent out some time ago to machine the above part parallel on both faces. A note to this effect was added to E.17444, and… | ||
| scan 027 | Incorrect valve timing due to camshaft variations, with a proposal to inspect the mechanism and establish standard limits. | ||
| View original record | X2764 BY. from EP. c. to Sft. c. to HS. EP9/H24. 8. 21. X.3423 RE CAMSHAFTS, VALVE MECHANISM & CORRECT X.1770 VALVE TIMING. X.2764 We have from time to time returned to the Works Camshafts which have… | ||
| scan 028 | Valve longevity issues related to seat angles and clearance settings for Goshawk & 40/50 models. | ||
| View original record | To Hs. from R. c. to CJ. BJ. c. to PN. Wor. c. to BY. HM. c. to OY. EP. X2764 R9/M27.12.22. RE. GOSHAWK & 40/50 VALVES X.2764. X.4226. You will remember that I suggested that possibly valves were not… | ||
| scan 029 | Engine valve performance, pre-ignition causes, and spark plugs. | ||
| View original record | To Hs. from R. c. to CJ. BJ. c. to PN. Wor. c. to RG. BY. c. to HM. OY. c. to EP. X2764 R1/M29.12.22. RE. BURNT VALVES X.2764. X.1812. X.3773. I am very pleased you find my fears of close clearance to… | ||
| scan 030 | The practice of pinning piston rings, comparing American methods with the company's 40/50 and Hawk engines. | ||
| View original record | contd:- -2- America had abandoned pinning the piston rings. I think this would reduce efficiency of gas-tightness, and occasionally become disastrous unless a more complex ring was used. Personally I… | ||
| scan 031 | Return of a 'Nesthill' Valve Spring Compresser tool. | ||
| View original record | X2764 Roy. from Hs. hsl/LG30.12.22. We are returning herewith the "Nesthill" Valve Spring Compresser. We are not interested in this tool. Hs. [Faint watermark: DICKINSON BOND] | ||
| scan 032 | Query from Hs. to Roy. regarding the intended function of a valve spring extractor. | ||
| View original record | X2764 Roy. from Hs. Hs2/LG19.2.23. VALVE SPRING EXTRACTOR. Referring to your ROY8/MG16.2.23 attached. We cannot see clearly from the sample how this valve spring extractor is intended to work. Is it… | ||
| scan 033 | Standardisation of a modified valve spring washer for a chassis. | ||
| View original record | R R 74b (S H) (S H 238, 20-2-20) G 8554 STANDARDISATION of CHASSIS PARTS. X No. 2764 Description of Parts. MODIFIED VALVE SPRING WASHER. Origin. Guide to locate washer for valve spring. Experimental… | ||
| scan 034 | Investigation into broken valve springs on chassis 4-YG. | ||
| View original record | x2764 [STAMP: RECEIVED MAR 20 1923] H8 [Initials, crossed out] BJ. [Illegible] c. Hs. BYG-P20.3.23. CHASSIS 4-YG. Referring to BJ12/H9323, the question of broken valve springs is one which has not… | ||
| scan 035 | Correspondence concerning broken valve springs and a burnt exhaust valve on chassis 9-YG, arranging for the replacement and investigation of the cylinder blocks. | ||
| View original record | X2764 Hs. BY/C9/H. 23. 5. 23. 40/50. HP. CHASSIS 9-YG. STANLEY TUBBS ESQ. We attach copy of BY13/P. 26.4.23. in connection with broken valve springs and burnt Exhaust Valve which occurred on the above… | ||
| scan 036 | Investigating six broken valve springs and one burnt exhaust valve on chassis 9-YG. | ||
| View original record | Copy. D/BP. C. Hm. BY18-P. 26.4.23. SIX BROKEN VALVE SPRINGS & ONE BURNT EXHAUST VALVE. 9-YG. In regard to the above customer's letter of April 20th, which I return herewith, we should point out that… | ||
| scan 037 | The investigation of burnt valves from a 40/50 chassis and the arrangement for further testing. | ||
| View original record | X2764 Hs. [Struck through] C.H. [Struck through] BY7-P7.6.23. 40/50 CHASSIS. VALVES. I am sending you herewith three morevalves shewing the burning effects which have been taken out of customers 40/50… | ||
| scan 038 | Investigation into the distortion of exhaust valve heads on the 40/50 chassis. | ||
| View original record | X2764 Hs. BY4-P11.6.23. 40/50 CHASSIS. VALVES. In regard to the distortion of the valve head on the 40/50 which has occurred on a good many exhaust valves, my last note succeeded in locating a block… | ||
| scan 039 | Design and material for improved engine valves, suggesting a 30° face angle and experiments with monel metal. | ||
| View original record | To Rg. from Hs. from R. X2764 c. to CJ. and BJ. R2/M20.6.23. VALVES. X.4226 X.2764 X.3616 Regarding the improved valves for the engines, I am getting Mr. Elliott to set out what we think an ideal… | ||
| scan 040 | Causes of burning exhaust valves and proposing changes to valve seat angles. | ||
| View original record | To Hs. from R. c. to Wor. CY. c. to BY. EP. RG. X2764 R3/M6.7.23. RE. VALVES. X.3616 X.2764 X.4226 We were pleased to hear that you were able to reproduce the burning of exhaust valves as occasionally… | ||
| scan 041 | The cause and cure for the failure of exhaust valves on post-war 40/50 HP cars. | ||
| View original record | R.R. 403 (40 H) (SL 42 12-7-23). J.H. D. X2764 EXPERIMENTAL REPORT. COPIES TO: R.C.J. W.O.R. By. E. Da. EP. OY. HM. Expl. No. Y3486 2764 REF. Hs1/LG15. 8. 23. OBJECT OF TEST. To find cause and cure… | ||
| scan 042 | The failures of 40/50 exhaust valves, comparing post-war and pre-war designs. | ||
| View original record | R.R. 403A (40 H) (EL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. 2764 REF: Hs1/LG15.8.23. 40/50 Exhaust Valves. There has been a number of failures of 40/50 Exhaust Valves. Samples of the… | ||
| scan 043 | The causes of valve burning, particularly comparing post-war and pre-war designs with different valve seat angles. | ||
| View original record | -2- B.B. 403A (40 H) (SL 12 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. 2764 REF: Hal/LGS.8.23. burning the valve is when the tappet lifts the valve .017" off its seat. Under these conditions we… | ||
| scan 044 | Engine valve seating angles, head shape, and material comparisons. | ||
| View original record | R.R. 403A (40 H) (EL 42 12-7-23). J.H.,D. -3- EXPERIMENTAL REPORT. Expl. No. 2764 REF: Hsl/LG15.8.23. to the inclined seating it tends to lift the valve and neutralize the downward alongation of the… | ||
| scan 045 | Exhaust valve pre-ignition issues and recommendations for valve shape and material. | ||
| View original record | R.R. 493A (40 M) (SL 42 15-7-23). J.H.,D. EXPERIMENTAL REPORT. Expl. No. 2764 REF: He1/LC15.8.23. During our tests we proved that exhaust valves could be badly scaled, burnt and overheated by… | ||
| scan 046 | Tappet clearances and weights for different exhaust valve types. | ||
| View original record | R.R. 403A (40 H) (SL 42 12-7-23). J.H.D. EXPERIMENTAL REPORT. Expl. No. 2764 REF: Hs1/LG15.8.23. best shape, and we should gradually weed the others out. Tappet clearances necessary to ensure exhaust… | ||
| scan 047 | Urgent modification regarding the use of existing valves as inlet valves. | ||
| View original record | BJ. from Hs. X2764 Hs1/LG31.8.23. X.2764 - VALVES. B920/H30.8.23 Referring to the attached. It is not proposed to scrap the valves - these will be used as Inlet Valves - until these are used, the new… | ||
| scan 048 | Standardisation proposal for chassis valves to overcome exhaust valve failures. | ||
| View original record | R.R. 755 (10M) (SL 72 18-7-23) MP 274954e. X2764 COMPLETED 31.8.23 STANDARDISATION of CHASSIS PARTS. Date 16.8.23. X No. 2764 Description of Parts: VALVES. Origin: To overcome exhaust valve failures.… | ||
| scan 049 | The cost and stock value of valves. | ||
| View original record | Hs. C O P Y. My/JW/N3/139A/M22. 8. 23. X. 2764 - VALVES. We return herewith copy of the above Std. Sheet with costs filled in. The value of finished and unfinished parts in stock at 21.8.23 is - £253.… | ||
| scan 050 | Standardisation of valves to overcome exhaust valve failures. | ||
| View original record | R.R. 755 (10M) (SL 72 18-7-23) MP 274954s. STANDARDISATION of CHASSIS PARTS. Description of Parts. VALVES Origin To overcome exhaust valve failures. Experimental Test Report See report Hal/LG15.8.23.… | ||
| scan 051 | Returning a standard sheet with filled-in costs for valves and the total stock value. | ||
| View original record | Hs. COPY. My/JW/N3/139A/M22. 8. 23. X.2764 - VALVES. We return herewith copy of the above Std. Sheet with costs filled in. The value of finished and unfinished parts in stock at 21.8.23 is - £253. 8.… | ||
| scan 052 | Approval, testing, and sourcing of a new high-silicon valve steel for chassis and aero work. | ||
| View original record | Hs. Wor. Wd. Mr. Shelton. Mr. Lightbown. X. 2764. BY9/P19.11.23. RE. MATERIAL FOR VALVES. X.3616 X.2764. We have received a completely signed up std. sheet empowering us to use the new valve steel,… | ||
| scan 053 | Material for valves, referencing mileage data from Springfield. | ||
| View original record | WOR. from Hs. X2764 Hs3/LE23.11.23. / MATERIAL FOR VALVES. x2764 x4224 With reference to the attached std. sheet. R. and CJ. have a recently signed the Springfield Standardisation Sheet for this… | ||
| scan 054 | Standardisation sheet for valve material for the 40/50 HP and 20 HP models. | ||
| View original record | CJ. and BJ. from Hs/LG. X2764 28.11.23. STANDARDISATION SHEET. MATERIAL FOR VALVES. 40/50 HP. and 20 HP. The attached std. sheet was sent for signatures on the 21st. Nov. - returned to Derby on the… | ||
| scan 055 | Standardisation of valve material for 40 HP and 20 HP chassis to increase life. | ||
| View original record | R.R. 758 (10M) (SL 72 18-7-23) MP 274954s. STANDARDISATION of CHASSIS PARTS. COMPLETED 28.11.23 Description of Parts: 40 HP. and 20 HP. CHASSIS. MATERIAL FOR VALVES. Origin: To increase life.… | ||
| scan 056 | Faulty 40/50 HP valve spring that broke during a test, referencing a previous issue with 20-HP springs. | ||
| View original record | c. Hs. c. SFL. X-2764 EP15/H17.1.24. re. 40/50 HP. Valve Springs. Further to our memo reference EP2/H14.1.24, re 20-HP Valve Spring breakages, we have now a case of a 40/50 HP. engine valve spring… | ||
| scan 057 | Repeated 40/50 HP valve spring failures due to faulty material, with a recommendation for replacement. | ||
| View original record | RV. c. Hs. c. CDEPT. c. Wor. X 2764 EP8/H30.1.24. re. 40/50 HP. Valve Springs. Further to our report EP15/H17.1.24, we return herewith two further samples of valve springs broken on test. This is… | ||
| scan 058 | Private memo regarding valve stems and guides for the 40/50 model car. | ||
| View original record | 42764 PRIVATE. c. Hs. re. 40/50. VALVE STEMS AND GUIDES. With further reference to your BJ6/H25.4.24. and our reply EP12/H30.4.24, we attach copy of report we have today sent through to BY. which we… | ||
| scan 059 | Forwarding a note about slow running on 40/50 HP engines to other departments. | ||
| View original record | [Handwritten] X2764 [STRIKETHROUGH]Hm.[/STRIKETHROUGH] Hs. [STRIKETHROUGH]Cy.Mr.[/STRIKETHROUGH] EP/Thn13/H18.9.24. re. Slow Running on 40/50 HP. Engines. We are attaching hereto copy of a memo we… | ||
| scan 060 | Improving slow running on 40-50 HP engines by fitting air-tight washers to the valves. | ||
| View original record | N-W EP. Br1/H.17.9.24. re Slow Running on 40-50 H.P. Engines. A case has just gone through our hands which I think may be of interest to you. We decarbonized an engine upon which the valve clearances… | ||
| scan 061 | On addressing wear on 40/50 HP valve guides by standardizing bronze guides in place of cast iron. | ||
| View original record | X2764 To BJ. from Hs. Hs2/LG24.9.24. X4432 X2764 WEAR ON 40/50 H.P. VALVE GUIDES. The new cylinder castings which have had to be made in connection with the enclosed 40/50 HP. valves, are at present… | ||
| scan 062 | Testing and feedback on a 40/50 HP engine fitted with cylinders for completely enclosed valves. | ||
| View original record | To BJ. from Hs. X2764 Hs2/LG3.11.24. 40/50 HP. ENGINE WITH ENCLOSED VALVES. X.2764 X2565 We have run a 40/50 HP. engine fitted with cylinders which enable the valves to be completely enclosed. We took… | ||
| scan 063 | Modification to prevent oil being drawn up the valve stem on the 40/50 HP engine. | ||
| View original record | X2764 E.Dept. Mx. Mr. Hs. -------- BY7/H. 25.8.25. -------- VALVES AND FITTINGS. 40/50 HP. ENGINE. -------- Mx. has drawn attention to the fact that the Cup E.70313 containing Felt Washer E.70302,… | ||
| scan 064 | Valve seat trouble in Phantom and other engines, posing several questions for investigation. | ||
| View original record | To Hs. } FROM R. RG. } LE CANADEL. E. } c. to BJ. Wor. BY. c. to DA. PN. +2764 R2/M16.4.26. PHANTOM AND OTHER VALVES. X. 8060 X. 2764. Very surprised after so many years to hear so seriously of valve… | ||
| scan 065 | Booklet on the Midgley Scholey lighting system, sent for interest. | ||
| View original record | [Handwritten top left] J.E.H. P. HPC. HV. [Handwritten top right] X 40884 [Typed top right] ROY.12/AG.17.11.22. [Handwritten left margin] BY. Possibly Mr. Royce might like to read this booklet. I… | ||
| scan 066 | Letter discussing the Midgley-Scholey chassis electrical equipment, its control method, and a critique of its battery charging system. | ||
| View original record | X 4088 To E. from EFC. c. EV. EFC1/T30.1.22. RE MIDGLEY-SCHOLEY CHASSIS ELECTRICAL EQUIPMENT. I am sending you herewith booklet of the Midgley-Scholey system. It will be remembered that Mr. Midgley… | ||
| scan 067 | Critique of car electrical systems, including vibrator regulators, the Midgley-Scholey system and junction boxes. | ||
| View original record | -2- EFC1/T30.1.22. Contd. dynamo is not sufficiently high to break down the sulphation, that battery is useless on the car. The only difficulty we see with the vibrator regulator control is in the… | ||
| scan 068 | Letter from the Spanish representative regarding new electrical starter equipment from Messrs. Scholey. | ||
| View original record | Y4088 Los coches conducidos por nuestro personal lo son a cuenta y riesgo de sus propietarios. AUTOMÓVILES REPRESENTANTE GRAL. EN ESPAÑA ROLLS-ROYCE C. DE SALAMANCA TALLERES ROLLS ROYCE TUTOR.10… | ||
| scan 069 | Report on new electrical equipment from Scholey & Co. | ||
| View original record | X4088 To EFC. from CJ. Electrical Equipment. CJ5/E7/3/22 Please examine the attached letter and cutting from the 'Motor' and let me have a report on the new electrical equipment brought out by Messrs.… | ||
| scan 070 | Requesting the return of a booklet on Midgley-Scholey chassis electrical equipment. | ||
| View original record | To E/CLJ (at W.W.) X4088 EFC2/T8.3.22. X.4088 - MIDGLEY-SCHOLEY CHASSIS ELECTRICAL EQUIPMENT. Under cover of our EFC1/T30.1.22, we sent to E. at West Wittering a Booklet of the Midgley-Scholey chassis… | ||
| scan 071 | The Midgley-Scholey chassis electrical equipment, including the dynamo and control units. | ||
| View original record | X4058 To CJ. from EFC. EFC2/T18.3.22. RE MIDGLEY-SCHOLEY CHASSIS ELECTRICAL EQUIPMENT. Re your CJ5/E7.3.22, the reason of the delay in sending you this report is that we have been getting together a… | ||
| scan 072 | Critique of a dynamo's voltage regulator and a starter motor unit with a Bendix drive. | ||
| View original record | EFC2/T18.3.22. -2- Contd. winding of the dynamo and the dynamo output reduced. In principle this is of course a sound scheme, as no doubt many batteries have been spoilt by continuous overcharging at… | ||
| scan 073 | Continued report on an electrical system, critiquing the switchboard, junction box, and wiring. | ||
| View original record | EPC2/T18.3.22. -3- Contd. of the switch, would only work out to, say, 1% or at the most 2%, of the effective resistance of the circuit. The great resistance in a starter motor circuit which wants… | ||
| scan 074 | Requesting the return of a booklet about the Midgeley-Scholey Electrical System. | ||
| View original record | X.4088. To E. from EFC. EFC3/T13.11.23. X.4088 - MIDGELEY-SCHOLEY ELECTRICAL SYSTEM, On 30.1.22 I sent to you for Mr. Royce, a booklet describing the Midgeley Scholey electrifal equipment. If you can… | ||
| scan 075 | Letter from Midgley Car Lighting Company Limited proposing their electrical lighting and starting equipment. | ||
| View original record | X1.088 DATES NAMED FOR DELIVERY ARE SUBJECT TO STRIKES, ACCIDENTS AND OTHER UNFORESEEN CIRCUMSTANCES. TELEGRAMS: 'KARLYTEKO' WESTRAND, LONDON. TELEPHONES: HEAD OFFICE: REGENT 5487. WORKS: GREENWICH… | ||
| scan 076 | Letter from Midgley Car Lighting Company proposing a meeting in Derby to demonstrate components. | ||
| View original record | -2- As the writer will be in Derby some time within the next week or so we shall be glad to know whether we can have the opportunity of shewing you one or two components and explain their working. If… | ||
| scan 077 | Letter to The Midgley Car Lighting Co. Ltd. regarding their electrical equipment. | ||
| View original record | X4088 EFCL/T. 17th February, 1925. Messrs. The Midgley Car Lighting Co.Ltd., 1A, Cockspur Street, London, S.W.1. Dear Sirs, Re Midgley Electrical Equipment. We thank you for your letter of the 12th… | ||
| scan 078 | Continued letter discussing the principles and objections to dynamo machines. | ||
| View original record | EFC1/T. -2- Contd. We agree that the principle of action of the dynamo is good, and that no doubt the results in commutation are very satisfactory, though in our opinion it is really no improvement… | ||
| scan 079 | Letter from Midgley Car Lighting Company regarding a Controller unit being sent for examination. | ||
| View original record | DATES NAMED FOR DELIVERY ARE SUBJECT TO STRIKES ACCIDENTS AND OTHER UNFORSEEN CIRCUMSTANCES. TELEGRAMS: 'MARLYTEKO' WESTRAND, LONDON. TELEPHONES: HEAD OFFICE: REGENT 5487, WORKS: GREENWICH 1205. X4058… | ||
| scan 080 | Letter from Midgley Car Lighting Company regarding a visit and tests for their M.C.L. Controller. | ||
| View original record | DATES NAMED FOR DELIVERY ARE SUBJECT TO STRIKES ACCIDENTS AND OTHER UNFORSEEN CIRCUMSTANCES. TELEGRAMS: 'KARLYTEKO' WESTRAND, LONDON. TELEPHONES: { HEAD OFFICE: REGENT 5487, WORKS: GREENWICH 1203.… | ||
| scan 081 | Letter from Midgley Car Lighting Company Limited regarding their Cut out and Controller, offering a Dynamo for testing. | ||
| View original record | X4088 DATES NAMED FOR DELIVERY ARE SUBJECT TO STRIKES ACCIDENTS AND OTHER UNFORSEEN CIRCUMSTANCES. TELEGRAMS: "KARLYTEKO" WESTRAND, LONDON. TELEPHONES: { HEAD OFFICE: REGENT 5487. { WORKS: GREENWICH… | ||
| scan 082 | Blueprint of a 5-inch Saddle & Saddle Mag Dynamo with dimensions. | ||
| View original record | 5" Saddle & Saddle Mag Dynamo., Nº 6 WOODRUFF KEY, Nº 38 DRILL, 1/2 B.S.F. THREAD, 8 3/16", 5" DIA, 2 7/8", 3 5/8", 15/16" DIA, 12 5/16", 20 1/8", 17/32", 23/32", 3/16", 11/16", 19/32", 5/8" DIA,… | ||
| scan 083 | Blueprint graph showing the output curve for a Standard 5' Dynamo. | ||
| View original record | STANDARD 5" DYNAMO OUTPUT CURVE 12V 12A - AMPERES - - RPM - THE MIDGLEY CAR LIGHTING CO LTD 1A COCKSPUR STREET. S.W.1. | ||
| scan 084 | Letter to Midgley Car Lighting Co. Ltd. concerning a delay in testing their Cutout and Controller. | ||
| View original record | X4088 EFCl/T. 30th April, 1925. Messrs. Midgley Car Lighting Co.Ltd., 1A, Cockspur Street, London, S.W.1. For the attention of Mr.E.Leighton. Dear Sirs, Re M.C.L. Cutout and Controller. Answering your… | ||
| scan 085 | Follow-up letter from Midgley Car Lighting Company regarding tests on a Cut out and Controller. | ||
| View original record | DATES NAMED FOR DELIVERY ARE SUBJECT TO STRIKES, ACCIDENTS AND OTHER UNFORESEEN CIRCUMSTANCES. TELEGRAMS: 'KARLYTEKO' WESTRAND, LONDON. TELEPHONES: HEAD OFFICE: REGENT 5497. WORKS: GREENWICH 490.… | ||
| scan 086 | Letter to Messrs. Midgley Car Lighting Co. Ltd. regarding a delay in testing a cutout and controller. | ||
| View original record | X4088 EFC1/T. 5th January, 1925. Messrs. Midgley Car Lighting Co.Ltd.. 17-19 Cockspur Street, London, S.W.1. Dear Sirs, For the attention of Mr. E. Leighton. We regret that we have not yet been able… | ||
| scan 087 | Midgley cutout and controller, referencing an attached report and diagram. | ||
| View original record | To R. from EFC. c. BJ. PN. Wor. c. BY. Rg. EP. c. Da. E. X4088 EFC3/T24.6.26. X.4088 - MIDGLEY CUTOUT AND CONTROLLER. X.4008 As referred to in EFC1/T24.6.26, please find attached copy of my… | ||
| scan 088 | Investigation into the operation of a Midgley cutout and controller for dynamo control. | ||
| View original record | AC. 74. 21st May, 1926. MIDGLEY CUTOUT AND CONTROLLER. This apparatus was received from the makers with a view to our investigating the scheme of dynamo control it employs. The cutout and controller… | ||
| scan 089 | The operation and electrical tests of a controller armature and cutout unit. | ||
| View original record | AC. 74. -2- Contd. The controller armature travels some distance before pulling the contacts apart and on reducing the magnetic pull, the return motion is in two definite stages (1) to the "on… | ||
| scan 090 | Test results and electrical specifications for a controller, including shunt and series measurements. | ||
| View original record | AC.74. -3- Contd. Controller. Shunt volts to pull over 16.2 " amps. " " .23 " volts back "on contact" 9.5 " amps. " " .137 " volts to re-break contact 11.5 " amps. " " .165 " volts right back 9.0 "… | ||
| scan 091 | Dynamo output characteristics with a discharged battery and various field circuit resistances. | ||
| View original record | AC.74. -4- Contd. Just above zero. On a discharged Exide battery the full dynamo output was reached with a good margin before operating the controller. A series of curves (attached) was also taken on… | ||
| scan 092 | Wiring diagram for a vehicle dynamo controller and cut-out unit. | ||
| View original record | LEY CONTROLLER CUT OUT UNIT Top Diagram: D- F- Controller B- L- D+ Cut-out B+ Lamps Bottom Diagram: Dynamo - + F(-) B- F(-) D+ Controller To Lamps L- Cut-out B+ Bottom right corner: H 4 E.C.S | ||
| scan 093 | Blank page with a Print Room stamp from the Derby facility. | ||
| View original record | ROLLS-ROYCE LIMITED. PRINT ROOM 24 JUN. 1936 DERBY. | ||
| scan 094 | Methods of controlling field resistance, comparing the Remy method with a voltage method and a ballast resistance unit. | ||
| View original record | X 4088 -2- Contd. Extract from REC 2/T. to PVR 30/8/26 X8780. Referring to the Remy method of inserting the field resistance by rise of temperature, this is an alternative method, and without going… | ||
| scan 095 | Hand-drawn wiring diagram for a Midgley controller and cut-out unit. | ||
| View original record | Terminal F D- + MAIN MIDGLEY CONTROLLER CUT-OUT UNIT D- F- B Charge & Discharge B- L- D+ SERIES B+ V Lamps + - DYNAMO F.C + REG. SERIES SHUNT D+ L- | ||
| scan 096 | Reverse of a document showing a 'Print Room' stamp from the Derby facility. | ||
| View original record | ROLLS-ROYCE LIMITED. PRINT ROOM 18 AUG. 1926 DERBY. | ||
| scan 097 | Patent specification for an Automatic Charge Reducing Switch, known as the Midgley Patent. | ||
| View original record | X4088 To RS. from EFC. EFC4/T16.5.27. AUTOMATIC CHARGE REDUCING SWITCH -MIDGLEY PATENT- I think Mr. Royce would be interested to see the complete patent specification of the Midgley device for… | ||
| scan 098 | Missing specification copy for the Midgley Patent Automatic Charge Reducing Switch. | ||
| View original record | TO EFC. FROM RS. X4088 RS3/M28.6.27. [STAMP: RECEIVED 29 ... 1927] AUTOMATIC CHARGE REDUCING SWITCH - MIDGLEY PATENT. Referring to your EFC4/T16.5.27., an exhaustive search in this office has failed… | ||
| scan 099 | The specification for an Automatic Charge Reducing Switch, Midgley Patent. | ||
| View original record | To RS. from EFC. X 4088 EFC2/T30.6.27. AUTOMATIC CHARGE REDUCING SWITCH - MIDGLEY PATENT. We thank you for your RS3/M28.6.27. Attached please find copy of Specification No.187,649 in connection with… | ||
| scan 100 | The return of a patent specification and various Bosch components. | ||
| View original record | To RS. from EFC. X4088 ? EFC9/T21.10.27. We thank you for returning the Patent Specification of the Midgley Charge Reducing Switch - meanwhile however we had obtained a further copy. There are other… | ||
| scan 101 | Successful bench trial and construction of a new auto switch unit for reducing charging current. | ||
| View original record | To R. from EFC. c. BJ. E. c. Da. Wor. c. By. CWB. X 4088 EFC3/T11.11.27. AUTO SWITCH. X.4098. X.4088 In our EFC7/T27.10.27 we stated that we had an idea that we were working on by which we hoped to… | ||
| scan 102 | Continued discussion on eliminating vibrator regulator action and considerations for connecting cutout and auto switch shunt coils. | ||
| View original record | -2- Contd. The elimination of the tendency to vibrator regulator action is completely effected - the switch goes over with a definite snap and with the amount of resistance referred to above, with… | ||
| scan 103 | Continued report on wiring configurations for cutout shunts and auto switches in an automotive electrical system. | ||
| View original record | -3- Contd. (2) Both connected to B. (3) " " C. (4) Cutout shunt connected to C and auto switch shunt connected to B. We have already pointed out that there is a reason why on present standard the… | ||
| scan 104 | The electrical behavior and vibration issues of an auto-switch and cutout unit. | ||
| View original record | -4- Contd. respective positions electrically, i.e. two in existing wires and one between terminal B of the distribution board and chassis frame. It was remarked in our previous report that with the… | ||
| scan 105 | Page detailing the operation of the auto switch and cutout under varying load and speed conditions. | ||
| View original record | Contd. -5- unloaded system is prevented from rising above the figure at which the auto switch operates. Moreover, the effective average voltage of the system is several volts less than this, because… | ||
| scan 106 | The advantages and disadvantages of using high resistance in the auto switch and cutout circuit. | ||
| View original record | Contd. -6- and the voltage rising abnormally, even at the very high speeds. Thus, with a side lamp load only, it is impossible, with the resistance which we have at present, for the auto switch and… | ||
| scan 107 | Comparison of a proposed auto-switch arrangement with the Midgley type, focusing on the lighting circuit and patent avoidance. | ||
| View original record | -7- Contd. dynamo charge switch in normal circumstances of running, but also as a nearly complete protector of the system against the results of high voltages which are inherent in the type of… | ||
| scan 108 | Considerations for electrical resistance and components to balance system voltage and contact sparking. | ||
| View original record | -8- Contd. (1) The use of a much bigger resistance than would be possible in the Midgley case, and of such a value as practically to cut off the charge altogether (except for a very small charge at… | ||
| scan 109 | Letter from Morris, Russell & Co., Ltd. concerning British-made 'Champion' spark plugs. | ||
| View original record | BRANCHES PARIS MOSCOW NEW YORK CALCUTTA JOHANNESBURG SYDNEY MANAGING DIRECTORS F.J. GORDON. A.S.F. MORRIS. x4196 MORRIS, RUSSELL & CO., LTD. MANUFACTURERS OF AUTOMOBILE PARTS & ACCESSORIES AND… | ||
| scan 110 | Catalogue page detailing various Champion Spark Plugs and their applications for different vehicles. | ||
| View original record | Champion Spark Plugs Handwritten text top left: 1Bn, 4196 Handwritten text top right: E.H. CHAMPION "Studebaker" FOR STUDEBAKER CARS A13, ½ Inch A43, ⅞-18 For use in: Allen, Dorr, Elgin, Empire,… | ||
| scan 111 | Product catalogue page for various types of Champion Spark Plugs. | ||
| View original record | Champion Spark Plugs CHAMPION "Studebaker" FOR STUDEBAKER CARS A13, 1/2 Inch A43, 1/2-18 For use in: Allen, Dort, Elgin, Empire, Grant, Harroun, Jordan, Kline Kar, Liberty, Saxon, Spaulding, Stewart… | ||
| scan 112 | American chassis parts, specifically evaluating Herz and Champion spark plugs. | ||
| View original record | X.4196 X.3905. - Report on American Chassis Parts. Contd. -2- Hs4/LG17.3.20. X.3722. HERZ PLUGS. These plugs have mica insulation. There is no novelty about them. They have two sparking points. We… | ||
| scan 113 | From Mr. Olley to Mr. F.H. Royce regarding various types of spark plugs and the testing of a Champion Toledo plug. | ||
| View original record | X4196 OY3/G22.5.20 May 22nd. 1920. To Mr. F.H. Royce. c.c. Mr. Hives. Mr. Elliott. Mr. Nadin. Mr. Caswell. From Mr. Olley. RE SPARK PLUGS. X.3905 X.4196 X.3722 X.1812. In reply to your R9/G27.3.20,… | ||
| scan 114 | Report comparing different types of American spark plugs, including A.C. Champion and Champion Toledo. | ||
| View original record | -2- of plugs in this country are the A.C. Champion plug made at Flint, Michigan, and the Champion Toledo Plug referred to above. I brought over samples of both these types, which I believe you… | ||
| scan 115 | Report discussing future possibilities and developments in spark plug design and materials. | ||
| View original record | -3- The possibilities of the future are:- (a) That the Flint Company is making us special plugs to suit our requirements with reference to drawings of the engine particulars of the speeds, compression… | ||
| scan 116 | Letter from Rolls-Royce of America regarding the testing and use of Champion Spark Plugs. | ||
| View original record | COPY. X4196 Oy6 - G.23820. August 23rd.1920. Mr.Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Dear Sir:- Re: Spark Plugs. On August 13th we shipped to Rolls-Royce Ltd.,… | ||
| scan 117 | Spark plugs fitted to car 49-GB. | ||
| View original record | S.B. 288a (100 T) S.H.89. 22-7-20 G. 2769 X.4196. To Hs. from GWH. 28.9.20. X.3762. PLUGS FITTED TO 49-GB CAR. X.4196. X.3905. Magneto - 3 detachable Champion plugs. 3 Champion ribbed plugs. Coil… | ||
| scan 118 | Extract of a memorandum discussing the performance and use of American Champion ignition plugs. | ||
| View original record | S.S. 1950 (BD/6 10-2-17) M.P. 180805 X4196. Extract from Hs7/LG4.10.20. X.1812. X.3413. IGNITION PLUGS. X.3905. X.4196. The American Champion Sparking Plugs we find are quite good. They have solely… | ||
| scan 119 | Request for a stock of 'Champion' plugs for comparison with 'Lodge 9' plugs. | ||
| View original record | X4196 To Hs. from R. Copy to CJ. R7/G18.10.20. X.4196. RE "CHAMPION" PLUGS. I should be pleased to know if you have a stock of the "Champion" plugs they are using in America, if so, would you kindly… | ||
| scan 120 | One dozen Champion sparking plugs of the porcelain detachable type for the 1.EX Car. | ||
| View original record | X4196 S 13 (1m-100 T) S.H. 89. 23-7-20; G 3785 To R. from Hs. Hs3/LG23.10.20. X. 3763b. X. 4196. SPARKING PLUGS. Amongst the spares on 1.EX Car there are 1 dozen Champion Sparking Plugs - these are… | ||
| scan 121 | The dispatch of Champion 3-point spark plugs for testing purposes. | ||
| View original record | X4196 Mr. Hives. Wd/CGS14/AB81120. 8th Nov. 1920. X4196 We have to-day instructed the Stores to hand to you 24 - JIS/63 Metric Champion 3 point Plugs sent for test purposes free of charge, by Messrs.… | ||
| scan 122 | Satisfactory performance of K.L.G. plugs in endurance tests, referencing a report from S. Smith & Sons. | ||
| View original record | Mr. Hives. MEMORANDUM We have received from Messrs S. Smith & Sons (M.A.) Ltd., a copy of their latest Report on K.L.G Plugs, a copy of which we enclose herewith. These "K.L.G" plugs have given the… | ||
| scan 123 | Request to the Experimental Department to test two types of Champion single point sparking plugs. | ||
| View original record | To EP. from Hs. S.F. e^X.4196 Hs1/LG10.11.20. X.4196 RE SPARKING PLUGS. Please receive herewith 1 dozen Champion Sparking Plugs - single point and 1 dozen Champion detachable sparking plugs - single… | ||
| scan 124 | On overoiling and faulty ignition in post-war cars, discussing ignition plug performance and potential replacements. | ||
| View original record | X 4196 Wor. from EP. EP6/F11.11.20. X.3614. RE AMERICAN VISIT - POINTS FOR ATTENTION. (3) OVEROILING AND FAULTY IGNITION. X.1812. X.3905. X.3413. X.4196. This is a serious complaint on post-war cars.… | ||
| scan 125 | Urgent request to order 4 dozen 22mm Champion sparking plugs for American cars being experimented with. | ||
| View original record | To Ms. from Hs/TMW. X.4196 G.F.C. Hs/TMW2/LG25.11.20. SPARKING PLUGS FOR AMERICAN CARS. We are in urgent need of some 22 mm. sparking plugs as spares for American Cars we are experimenting with. We… | ||
| scan 126 | Request for a report on the behaviour of Champion and Cooke sparking plugs in the School Car engine. | ||
| View original record | x4196 EFC. To Hr. from Hs/TMW. Hs/TMW4/LG22.12.20. X.4196 X.3641 SCHOOL CAR ENGINE SPRAKING PLUGS. We should be glad of a report from you at your earliest convenience of the behaviour of the Champion… | ||
| scan 127 | Request to obtain two Champion Spark Plug Cleaners. | ||
| View original record | X.4196 R.F.C. To Ms. O.C. [crossed out] From [crossed out] Hs/TMW Hs/TMW5/LG6.1.21. X.4196 CHAMPION SPARK PLUB CLEANER. With reference to the attached leaflet referring to the above. If it is possible… | ||
| scan 128 | Dispatch of a Champion Minute Sparking Plug Cleaner and its fitting specifications. | ||
| View original record | X.4196 RFC To EP. from Hs/TMW. Hs/TMW4/LG13.121. X4196 RE. CHAMPION MINUTE SPARKING PLUG CLEANER: We are sending you herewith a Champion Minute Spark Plug Cleaner which may/be of interest to you.… | ||
| scan 129 | The test procedures for various makes of sparking plugs. | ||
| View original record | X.4196 To R. from Hs. c. to CJ. c. to Bn. c. to E. c. to Da. c. to By. c. to EP. c. to EWT. for R.R.Inc. Hs5/LG9.2.21. X.1312 - TESTS ON SPARKING PLUGS. X.4295. X.390.5 X.4196. X.4277. Below are the… | ||
| scan 130 | Test results table for various types of spark plugs. | ||
| View original record | -2- HS5/LG9.2.21. Type of plug. | No. tested. | Test 1. | Test 2. | Test 3. | Test 4. | Test 5. | Remarks. --- | --- | --- | --- | --- | --- | --- | --- Bethlehem U.S.A. | 12 | O.K. | O.K. | O.K. |… | ||
| scan 131 | Report comparing test results for Mercury, Champion, and Bethlehem spark plugs. | ||
| View original record | R.R. 235A (100 T) S.H. 200 16-12-20 G 2947 Contd. -3- Hs5/LG9.2.21. From the results of these tests we place the - Mercury plug the first Champion U.S.A. plug the second and the Bethlehem U.S.A. plug… | ||
| scan 132 | Confirming a quote from the Champion Spark Plug Co. for GB3 type plugs and repairs. | ||
| View original record | X.4196 Hs. RECEIVED FEB 12 1921 Wd/Ms4/FJ12.2.21. RE CHAMPION SPARK PLUGS. I confirm telephone conversation between yourself and Mr.Whitehead that the representative of the Champion Spark Plug Co.… | ||
| scan 133 | Comparing the performance and design of various brands of sparking plugs, including Mercury, Champion, and Lodge. | ||
| View original record | To Hs. from R. c. to CJ. c. to Wor. c. to EP. c. to HM. c. to R.R. of Amer. Inc. (For the attention of CX) X4196 R1/G16.2.21. X.1812 - RE SPARKING PLUGS. X.4196. X.3413. X.4277. X.3905. X.4295. The… | ||
| scan 134 | Decision to standardize Champion (Canadian) and Mercury (Birmingham) parts for U.S.A. and English made cars respectively. | ||
| View original record | Contd. -2- RL/G16.2.21. satisfactory. In conclusion, I agree (subject to further exhaustive tests confirming) to prepare for at once standardising the Champion (Canadian make) for U.S.A. and the… | ||
| scan 135 | Selection, purchase, and testing of different brands of spark plugs for various car markets. | ||
| View original record | To BY. from R. c. to CJ. c. to Hs. c. to EF. c. to Hm. c. to Fn. c. to H. c. to R.R. of America Inc. (for the attention of CY) X.4196 R8/C22.2.21. X.1812 RE SPARKING PLUGS X.4295 X.4196 X.4313 X.2635… | ||
| scan 136 | Proposal for repairing 'Mercury' plugs to reduce costs and improve availability for works' use. | ||
| View original record | Contd. -2- There is no reason why someone, say a stores hand, should not be taught to repair plugs in his spare time, if we found the Mercury a satisfactory proposition. Hence the cost of plugs for… | ||
| scan 137 | Letter from Rolls-Royce of American, Inc. discussing the switch from Bethlehem to Champion A-63 spark plugs due to performance issues. | ||
| View original record | x 4196 OYS/G 7.3.21 March 7th. 1921. Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Attention Messrs. Royce & Hives. Dear Sir, x 4277 x 4196 RE SPARK PLUGS. Replying to Mr.… | ||
| scan 138 | Receipt and testing of a new type of spark plug from Champion Spark Plug Co. of Canada Ltd. | ||
| View original record | R.R. 235a (100 F) (S.H. 798. 10-12-20) G. 2948 Hs. from Wd. c. to ERC. X.4196 Wd4/NJ8.3.21. Champion Spark Plug Co. of Canada Ltd. The London representative of this firm has been here again today and… | ||
| scan 139 | Receipt of a new modified type of spark plug from Champion Spark Plug Co. for testing. | ||
| View original record | R.R. 235a (100 I) (S.H. 798. 10-12-20) G. 2948 Hs. from Wd. | ||
| scan 140 | Return of incorrectly sized spark plugs from the Champion Spark Plug Co. of Canada Ltd. | ||
| View original record | X.4196 To Wd. from Hs. Hsl/LGS.3.21. X4196 Champion Spark Plug Co. of Canada Ltd., Referring to your Wd4/NJ8.3.21. These plugs are 24 mm instead of the standard 18 mm. We return these plugs herewith.… | ||
| scan 141 | Suspicion that 'Mercury' plugs are causing pre-ignition due to the design of their porcelain. | ||
| View original record | X.4196 To Hs. from R. c. to CJ. c. to EFC. R4/G8.3.21. X.4295 - RE "MERCURY" PLUGS. X.4196. X.1812. I have a suspicion that one of these on the small pump engine here was causing pre-ignitions after… | ||
| scan 142 | Performance of Champion and Mercury ignition plugs and proposing design modifications. | ||
| View original record | To Hs. from R. c. CJ c. EFC. X4196 R6/G12.4.21.(T.M.S. AND H.B(T) AND O.W.) X.1812 - RE IGNITION PLUGS. X.4186. X.4295. X.2635. The Champion plugs you gave me to test in the little pump engine here… | ||
| scan 143 | Properties of steel versus yellow brass for a specific purpose. | ||
| View original record | Contd. -2- R6/G12.4.21. stiff to a red heat. I do not suggest tungsten steel for this purpose, but an ordinary steel is far different from yellow brass. R. | ||
| scan 144 | Failed 'Champion' sparking plug from the lighting engine at West Wittering. | ||
| View original record | X.4196. To Hs. from E. c. to CJ. E5/G29.4.21. X.4196 - RE "CHAMPION " SPARKING PLUGS. We send you herewith, in accordance with Mr. Royce's instructions, a "Champion" sparking plug that failed in the… | ||
| scan 145 | Recommendations on magneto and spark plug requirements for the 40/50 engine based on test results. | ||
| View original record | x4196 Extract from Hs1/LG5.5.21. X.430. MAGNETO REQUIREMENTS FOR 40/50 ENGINE. Recommendations. X.1812. X.3775. X.4181. X.4279. X.3413. X.4295. X.4196. During our tests we have proved that the Watford… | ||
| scan 146 | Continued document discussing tests on ignition coils with varying numbers of secondary turns. | ||
| View original record | Hsl/LG5.5.21 -2- Contd. magneto, the less exacting are our plug requirements. During these tests we have carried out tests on the coils. We have tried coils with 14,000, 16,000 and 18,000 turns on the… | ||
| scan 147 | Short internal memo requesting the purchase of half a dozen 'Champion' sparking plugs. | ||
| View original record | X4196 To HS. from E. E4/G31/5/21. RE SPARKING PLUGS. Could you kindly send me half a dozen "Champion" sparking plugs chargeable to me. Mr. Royce agrees to this as the price we have to pay for them… | ||
| scan 148 | Pre-ignition issues and failures related to Champion ignition plugs. | ||
| View original record | X4196 To R.R. America Inc. from R. for the attention of OY. c. to CJ. c. to Hs. R16/G5. 9. 21. X.4196 - RE IGNITION PLUGS. X.1812. X.4295 X.4305 In some of your descriptions you say that with heated… | ||
| scan 149 | Spark plug selection, balancing operating temperature, and engine distribution improvements. | ||
| View original record | Contd. -2- Hs16/G5.9.21. Personally, I have never experienced this on our car engine, but on aero engines and other cars and stationary engines we have known it to occur badly, and have had to select… | ||
| scan 150 | Letter discussing ignition plug pre-ignition issues and the performance of Champion plugs on dynamometer tests. | ||
| View original record | X4196 OY1/G20.9.21. Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Attention - Messrs. Royce and Hives. Dear Sir, RE. IGNITION PLUGS. X1812. X4196 - X.4305 Replying to Mr.… | ||
| scan 151 | Proposal from Champion Spark Plug Company to supply standardized plugs for testing at less than half the current cost. | ||
| View original record | X4196 Hs. from ROY. ROY7/MG16.2.23 The Champion Spark Plug Company claim Springfield have standardized their Plug, and are anxious we should consider its use on our manufactures here. Extract from… | ||
| scan 152 | Letter from Champion Spark Plug Company regarding tests on new type A.64 plugs and their use on American vehicles. | ||
| View original record | X4196 R.A. STRANAHAN, PRESIDENT F.D. STRANAHAN, TREASURER F.B. CASWELL, VICE-PRESIDENT AND MAN. DIRECTOR CHAMPION SPARKING PLUG Co., LTD., SUCCESSORS TO Champion Spark Plug Company of Canada, Limited… | ||
| scan 153 | Recommendation to obtain Champion Sparking Plugs for 20 HP & 40/50 HP chassis testing. | ||
| View original record | X4196 To EWT/CEP. from Hs. Hs10/LG19.11.24. Re. 20 HP. & 40/50 HP. Chassis Testing - Sparking Plugs. Handwritten notes: V1812, x4196 (struck through), x1918, x4091 Referring to EWT/CEP6/EC13.11.24. We… | ||
| scan 154 | The potential standardisation of Champion Sparking Plugs on the chassis. | ||
| View original record | Y4196 BY. from ROY. c. to Hs. ROY11/MG3.12.24. ------ The Champion Sparking Plug Company, who you will recollect supply Springfield, are again approaching us with a view to the fitment of their Plugs… | ||
| scan 155 | The selection of 'Champion' plugs for the 40/50 HP model. | ||
| View original record | X4196 Hs. C. Roy. BY9/H. 4. 12. 24. "CHAMPION" PLUGS. 40/50 HP. The question of the type of plug is one which you are best fitted to deal with from every point of view. I am quite happy to leave the… | ||
| scan 156 | The change in standardized sparking plugs by the Champion Sparking Plug Co. | ||
| View original record | Hs. from ROY. X4196 ROY4/MG3.4.25 The Champion Sparking Plug Co. Mr. Craddock, their Sales Manager, states that Springfield have standardized these Plugs, and until recently used Champion Type… | ||
| scan 157 | Letter from Champion Sparking Plug Co Ltd about the delivery of spark plugs for inspection. | ||
| View original record | Hs.for Mr.Robotham. We give you below copy of letter dated 30th ult. received to-day, from the Champion Sparking Plug Co Ltd., "We are sorry our representative was unable to see you (Mr.Royce) "when… | ||
| scan 158 | Visit from a Champion Sparking Plug Co. Ltd. representative about the trial of their spark plugs. | ||
| View original record | -By.from Wd. -c.to Hs. -c.to EFC. -c.to EP. -c.to Mx. -c.to Roy. -c.to Bn. X4196 Champion Sparking Plug Co.Ltd., 83 Pall Mall, S.W.1. Yesterday Mr.Hubert W.Craddock, a representative of the… | ||
| scan 159 | Initial testing of American-made Champion sparking plugs. | ||
| View original record | Y4196 To Wd. from Hs/Rm. Hs/Rm/LG11.8.25. CHAMPION SPARKING PLUGS. With reference to Wd2/NJ11.8.25. I personally interviewed the representative from the Champion Sparking Plug Co.Ltd. when he… | ||
| scan 160 | Meeting with Champion Sparking Plug Co. Ltd. about the trial of their spark plugs. | ||
| View original record | By. from Wd. c.to Hs. c.to EFC. c.to EP. c.to Mx. c.to Roy. c.to Dn. 4196 Wd2/NJ11.8.25. Champion Sparking Plug Co.Ltd., 83 Pall Mall, S.W.1. Yesterday Mr.Hubert W.Craddock, a representative of the… | ||
| scan 161 | Clarifying that an order of Champion Sparking Plugs was for use in Unit Test Beds, not for trial purposes. | ||
| View original record | X.4196 By c Wd. c Hs. c EHO c EP. c ROY c to Dr. EWT's Dept. EWT is absent CEP10/T19.8.25. Champion Sparking Plug Co.Ltd. 83. Pall Mall. S.W.1. In reply to memo reference Wd2/NJ11.8.25, we specially… | ||
| scan 162 | Unsatisfactory test results of Champion spark plugs and a visit from their representative. | ||
| View original record | Hs. from Wd. YC4196 Wd12/NJ17.3.26. Champion Sparking Plug Co., 83, Pall Mall, S.W.1. Yesterday we received a visit from Mr.O.Davidson, representative of the above-mentioned firm, who was particularly… | ||
| scan 163 | To the Test Department regarding a new 'Type R.4' sparking plug from Champion for unit testing. | ||
| View original record | X4196 Hs. c. to Hx. (Test Dept.) Mr. M.C.Davidson, representing the Champion Sparking Plug Co. Ld., 83 Pall Mall, London, S.W.1., called this morning with regard to Champion Sparking Plugs. He… | ||
| scan 164 | Letter from Champion Sparking Plug Co. Ltd. regarding a representative's visit to discuss aero engines. | ||
| View original record | CHAMPION TRADE MARK CHAMPION SPARKING PLUG CO. LTD 83 Pall Mall LONDON S.W.1 MEMBERS OF S.M.M.& T S.M.T.A. LTD. M.T.A. B.C.& M.C.M.& T.U. Telephone GERRARD 7033 Telegrams CHAMPLUG, LONDON 11th May,… | ||
| scan 165 | Advertisement proof for Champion Sparking Plugs, model No. 8, from advertising agent Alfred Pemberton. | ||
| View original record | ALFRED PEMBERTON, LTD., ADVERTISING AGENTS, 187, PICCADILLY, LONDON, W 1. Appearing in the Daily Mail, week commencing April 4th Speed CHAMPION Sparking Plugs will get the maximum possible speed from… | ||
| scan 166 | Letter to The Champion Sparking Plug Co. regarding a meeting to test sample aero engine spark plugs. | ||
| View original record | √4196 Expl: Dept: Hs4/LG. 14th. May 1927. Messrs. The Champion Sparking Plug Co., 83, Pall Mall, London S.W.1. Dear Sirs, With reference to your letter of the 11th.inst. We shall be pleased to see… | ||
| scan 167 | Letter from Champion Sparking Plug Co. Ltd. regarding the testing of spark plugs in aero engines. | ||
| View original record | TRADE CHAMPION MARK CHAMPION SPARKING PLUG CO. LTD 83, Pall Mall, LONDON S.W.1 MEMBERS OF S.M.M.& T. S.M.T.A. LTD. M.T.A. B.C.& M.C.M.& T.U. Telephone GERRARD 7033 Telegrams CHAMPLUG. LONDON 16th May,… | ||
| scan 168 | Internal request to order spark plugs from The Champion Sparking Plug Co. | ||
| View original record | To Roy/Ms. from Hs. X4196 Hs1/LG20.5.27. Please order from The Champion Sparking Plug Co. :- 26 R12. type. 12 R.1. " (already supplied). Hs. | ||
| scan 169 | Order for two types of Champion sparking plugs. | ||
| View original record | XC4196 To Roy/Ms. from Hs. Hs4/LG26.5.27. Please order for us :- 3 doz. R1. Champion sparking plugs. 3 doz. R12 Champion sparking plugs. Hs. | ||
| scan 170 | Order for two types of Champion sparking plugs. | ||
| View original record | To ROY/Ms. from Hs. x4196 Hs/TMW1/T11.6.27. Will you kindly order :- 6 doz. Champion sparking plugs type R.8. (4 doz. have already been supplied) 2 doz. ditto, type R.2. Hs. | ||
| scan 171 | Letter from Champion Sparking Plug Co. Ltd. proposing a representative's visit to discuss spark plug orders. | ||
| View original record | TRADE MARK CHAMPION CHAMPION SPARKING PLUG CO. LTD 83, Pall Mall, LONDON S.W.1 MEMBERS OF S.M.M.& T. S.M.T.A. LTD. M.T.A. B.C. & M.C.M. & T.U. Telephone GERRARD 7033. Telegrams CHAMPLUG. LONDON.… | ||
| scan 172 | Internal order memo for Champion sparking plugs. | ||
| View original record | To O.O. from Hs. X.496 Hs1/LG16.6.27. Please order for us :- 4 doz. R-12 Champion sparking plugs. 4 doz. R-11 " " " Hs. | ||
| scan 173 | Test report comparing the performance of three different types of spark plugs in a supercharged F.X. engine. | ||
| View original record | X4196 Hs/VH/LG22.8.27. F.X. WITH SUPERCHARGER. X4196 (16.6.27) X4550 X2410 Sparking plugs. During our tests with the supercharged engine on a mixture of aviation spirit + 20% benzol we tried three… | ||
| scan 174 | Analysis of Salamanite insulators, comparing their thermal conductivity to other materials and detailing test results in Champion plugs. | ||
| View original record | contd :- -2- is said to be composed mainly of the the same material - Salamanite. It is claimed that 'Salamanite' although a good insulator electrically, is a comparatively good conductor of heat.… | ||
| scan 175 | Order of Champion sparking plugs for experimental purposes. | ||
| View original record | X.4196 To Roy/Ms. from Hs. Hs/LG15.9.27. Please order for us from The Champion Sparking Plug Co., - for experimental purposes :- 4 doz. Champion sparking plugs type R.11. Hs. | ||
| scan 176 | Urgent order for 6 dozen Champion Sparking plugs type R.11. | ||
| View original record | Y4196 To Roy/Ms. from Hs. Hsl/LG11.10.27. Will you please order for us :- 6 doz. Champion Sparking plugs type R.11. We require these urgently so should be glad if you will wire for them. Hs. | ||
| scan 177 | Running an F.10 engine on low-grade fuel and the spark plug accessibility on an F.11 engine. | ||
| View original record | X4196 To Lp. from Hs. Hs2/LG11.10.27. 43113 F.10. ENGINES. Referring to Lp5/Av/D11.10.27. At the first opportunity we will run a F.10. with low grade fuel containing TEL. dope. As regards the… | ||
| scan 178 | The terminal length of sparking plugs for F.11 engines. | ||
| View original record | Mr. Wilkins (A.I.D.) c. Rg. c. Hs. c. EP. X4196 BYS/G.31.10.27. R.R. F.11 ENGINES - SPARKING PLUGS. -------------------------------------- The new type terminal specified by the Air Ministry to be… | ||
| scan 179 | Instruction to fit Champion spark plugs on F.11 high compression engines. | ||
| View original record | F.11 ENGINES - SPARKING PLUGS. We have been instructed by the Air Ministry to fit Champion plugs on all F. type high compression engines against contract 770857/27. As these plugs are not suitable for… | ||
| scan 180 | Request to the Air Ministry to supply spare Champion R.11 sparking plugs for F-11 engines. | ||
| View original record | D.BP. C. BY. c. Hs. RECEIVED 4 NOV 1997 X 4196 EP/AGR1/H4.11.27. re. F-11 Engines. As you are aware, we have supplied for each of the above engines for the Air Ministry, 24 Champion R.11 Sparking… | ||
| scan 181 | The correct fittings for sparking plugs on F.11 engines. | ||
| View original record | [Redacted] C. Hs. [Redacted] #37 X4196 BY/EL.3/MLJ 7.11.27. F.11 ENGINES - SPARKING PLUGS. Further to our BY/EL.1/MLJ.1.11.27, regarding the fitting of the Chater Lea Terminal on to the champion… | ||
| scan 182 | Official order for 2 dozen R.12 sparking plugs. | ||
| View original record | To Roy. from Hs. X4196 Hsl/LG6.12.27. We have instructed our man Gibson in London to obtain 2 doz. R.12 sparking plugs from The Champion Plug Co. Will you please arrange to send them an official… | ||
| scan 183 | Instructing the procurement of two dozen R.12 type plugs from the Champion Sparking Plug Co. | ||
| View original record | To Roy. from Hs. X496 Hs5/LG11.1.28. We instructed one of our men (Farmer, at Messrs. Vickers, Weybridge) to go to the Champion Sparking Plug Co. and obtain 2 doz. R.12 type plugs. It is necessary… | ||
| scan 184 | Issues with R.11 Champion plugs and arranging their replacement with R.12 plugs on F-type engines. | ||
| View original record | RV ROY c. Hs. X496 EP6/Hl6.1.28. re. F.11 and F.12 Ignition Plugs. Trouble having been experienced with the R.11. Champion Plugs in service, having discussed this matter with Rg. and Hs. this morning,… | ||
| scan 185 | Recommendation to replace R.11 spark plugs with hotter R.12 type plugs for F.XI and F.XII engines. | ||
| View original record | To RG. from Hs. c. to BY. 74196 Hs1/LG17.1.28 SPARKING PLUGS FOR F.XI & F.XII. X1918 X4196 Experience in the air has shewn that we can to advantage used a hotter plug than we can on the bench. We… | ||
| scan 186 | Sparking plug trouble experienced by a Vickers 'Scout' aircraft, leading to a forced landing. | ||
| View original record | W/S Py c. Wor. c. RG. c. HS. RECEIVED X4196 EP9/H.17.1.28. re. Vickers 'Scout'. Our tester Smith wired us last night to the effect that the Vickers 'Scout' left Vickers for Martlesham Heath yesterday… | ||
| scan 187 | The order of R.12 short type Champion sparking plugs for F.11 type engines, pending approval from the Air Ministry. | ||
| View original record | ROY. c. Hcr. c. Rg. c. Hs. c. Er. c. DM/BL X.4196 BY/Cgh16/G.19.1.28. re F.11 TYPE ENGINES - SPARKING PLUGS. With reference to EP6/H/16.1.28. before we can change over to the R.12 short type Champion… | ||
| scan 188 | 'Hs.' to 'Roy' requesting the procurement of 6 dozen Champion R.12 spark plugs. | ||
| View original record | To Roy. from Hs. V4196 Hs3/LG20.1.28. Will you please obtain for us :- 6 doz. R.12 - short type - Champion sparking plugs. Hs. | ||
| scan 189 | From Hs. to Roy, requesting an order be sent to the Champion Plug Co. for sparking plugs. | ||
| View original record | To Roy. from Hs. X4196 Hs2/LG20.1.28. We have a note from Gibson to see that he has obtained from The Champion Plug Co. 2 doz. R.12 type sparking plugs. Will you please send them an order. Hs. | ||
| scan 190 | Matter of plugs and permission to adjust mixture strength with Col. Fell for an aero engine type test. | ||
| View original record | 44196 Hs. Fl. from R. E. R5/M2. 2. 28. c. to B.J. RE. AERO ENGINES - TYPE TEST. X.3196 X.4196 X.3933 X.4425 Hs. should take the matter of plugs, and permission to adjust the mixture strength, with… | ||
| scan 191 | Flight tests detailing ignition failures and issues with different models of Champion spark plugs. | ||
| View original record | To RG. from Hs/TAG. c. to Mr. Wilkins A.I.D. c. to Wor. EP. c. to AID. Messrs. De Havillands. Handwritten: X4196 Hs/TAGL/LGA.2.28. RR. DH. 9a. Handwritten: X4196 .X3626 Y2810 PART 11. of Report on… | ||
| scan 192 | Issues with armoured H.T. wires, bonding wires, and includes a sketch of a Champion plug. | ||
| View original record | contd :- -2- The armoured H.T. wires have also given considerable trouble and in the end they had to be removed and plain H.T. wires fitted. The insulation round the wires broke down and was shorting… | ||
| scan 193 | Issues and proposed modifications for Chater-Lea H.T. wire terminals. | ||
| View original record | contd :- -3- engine cyl. blocks. On the inside of the Vee the engine end fixing is easy, but on the outside for the exhaust plugs, there is no convenient stud. The only way being to lead the wires to… | ||
| scan 194 | Search for suitable British-made spark plugs and the impact of plug dimensions on aircraft fuselage design. | ||
| View original record | To R. from HS/TAG. c. to RG. BJ. c. to E. BY. c. to EP. Wor. +4196 HS/RAG1/LGS.2.28. SPARKING PLUGS ETC. +4196/+1918 We have still to find a suitable British made sparking plug to suit the 8/1 F.… | ||
| scan 195 | List and analysis of various spark plugs for the F. engine, considering weight, length, and fitment. | ||
| View original record | contd :- -2- Plug. Weight Length. ozs. drms. Lodge A.30 5 6 2.8 Champion R.11 3 2 2.2 Champion R.12 3 12 2.7 K.L.G. 541 2 7 1.6 K.L.G. 543 5 1 2.9 K.L.G. 508 4 8 3.0 K.L.G. 464 5 10 3.2 K.L.G. 356 5 0… | ||
| scan 196 | Selection, procurement, and temporary use of various sparking plugs for F.11 engines. | ||
| View original record | X4196 EP/Thn5/Hl.2.28. [Illegible Stamp] Hs. re. SPARKING PLUGS FOR F.11. ENGINES. The question of Sparking Plugs for the above engines is still not definitely clear. Champion R.11 are the standard… | ||
| scan 197 | Test report on Champion spark plugs, comparing racing and production models based on their pre-ignition characteristics. | ||
| View original record | X496 BOUGIES CHAMPION Bougies Course | Froid. | Bougies serie. culot long | culot court | culot long | culot court WON'T PRE IGNITE R8 R10 R3 R12 3/8 R2 R1D A.E.1 R1 R7 A.E.9 R6 Good for burning off… | ||
| scan 198 | Letter to the Air Ministry seeking formal approval for Modification No. 23 to F Type engines, concerning ignition terminals. | ||
| View original record | c.c. By. Hs. Py. C. EP D/BP RHO. C. Mr. Wilkins. A.I.D. X4196 Rg2/LW. 20th February 1928 The Secretary, Air Ministry, Adastral House, Kingsway, London, W.C.2. For the attention of Capt. A.G. Forsyth… | ||
| scan 199 | Query regarding the intention to retain 30 A.E.A.4 Champion Plugs. | ||
| View original record | X4196 Hs/Rm. ROY/GEA10/EB15-3-28. Will you kindly advise us as soon as possible, whether it is your intention to retain the whole of the 30 A.E.A.4 Champion Plugs, sent to you a few days ago. ROY.… | ||
| scan 200 | Testing and unsuitability of various Champion sparking plugs for aero engines. | ||
| View original record | To Roy. from Hs/VH. VL496 Hs/VH1/LG23.3.28. CHAMPION SPARKING PLUGS. In reply to Roy/GEA10/EB15.3.28. We are returning 20 AE4 and 30 AE9 unused Champion sparking plugs. These plugs are quite… | ||
| scan 201 | Tests conducted on Champion sparking plugs, types AE.4, AE.9, and AE.1. | ||
| View original record | 23.3.28. REPORT ON CHAMPION SPARKING PLUGS TYPES : AE.4., AE.9., AE.1. TYPE AE.4. These plugs were tried in a 7/1 compression 'F' engine running on 20/80 Benzol/Aviation, Lodge A-30 and KLG.541 plugs… | ||
| scan 202 | Letter from Champion Sparking Plug Co. Ltd. regarding a new World's Air Speed Record achieved with their aero plugs. | ||
| View original record | XH486 TRADE CHAMPION MARK CHAMPION SPARKING PLUG CO. LTD 83 Pall Mall. LONDON S.W.1 MEMBERS OF S.M.M.& T. S.M.T.A LTD. M.T.A. B.C & M.C.M.& T.U. Telephone GERRARD 7033 Telegrams: CHAMPLUG, LONDON… | ||
| scan 203 | Letter from the Air Ministry forwarding a report on the failure of Champion Sparking Plugs. | ||
| View original record | Any communications on the subject of this letter should be addressed to:- THE SECRETARY, AIR MINISTRY, ADASTRA HOUSE, KINGSWAY, LONDON, W.C.2. and the following number quoted 738100/27. R.T.P. fB196… | ||