Rolls-Royce Archives
| Identifier | Entry | ||
| Scan001 | Page from a publication featuring letters discussing the merits of long versus short stroke engines. | ||
| View original record | H.R. 525A (500 H) (S.A. 453. 4-5-15) G. 0670. LONG AND SHORT STROKE ENGINES. [18305.]—You devote the whole of your leading article in The Autocar for November 9th to the “pros” and “cons” of the long… | ||
| Scan002 | Extract from 'The Autocar' magazine discussing engine forces, pressure diagrams, and the debate between long and short stroke engines. | ||
| View original record | R.R. 935A (300 H) (S.A. 853. 4-2-15) G. 9970. Handwritten: C.C.1766 THE AUTOCAR, December 21st, 1912. Total pressure of gases on piston + weight of piston and connecting rod = acceleration forces.… | ||
| Scan003 | Method for checking and calibrating speedometers. | ||
| View original record | THE AUTOCAR, August 23rd, 1913. 327 XC1956 Useful Hints and Tips. A Method of Checking and Calibrating Speedometers. THERE have been discussions lately in the pages of The Autocar concerning the… | ||
| Scan004 | Customer's request for an engine revolution counter and an alternative proposal for a colour-coded speedometer. | ||
| View original record | COPY. c/o F.H. Royce Le Canadel par Le Lavandou Var France. Mr Mills. Re Mr Radley's request to fit an engine revolution counter, please note there is no convenient place on the engine where this… | ||
| Scan005 | Specification for a speedometer drive system using a raw hide belt and flexible shaft for a standard car. | ||
| View original record | EXTRACT FROM R4/W18816 of AUGUST 18th, 1916. RE X.1756 - SPEEDOMETER - STD. CAR. SPEEDOMETER. - This is to be driven by raw hide belt sewn with wax end, in such a way as the sewing does not touch the… | ||
| Scan006 | Extract discussing issues with the speed indicator belt and mileage recorder on chassis no. 7-CA. | ||
| View original record | H.H. 25 a (400 T) - S.C. 536. 16-5-16: G. 1546. R14/W9916. 9thSeptember 1916. (EXTRACT) X.2756 RE CHASSIS NO. 7-CA. SPEED INDICATOR. The belt of this came off for no apparent reason and on examining… | ||
| Scan007 | New speedometer drive using a pulley and the optimal placement of the battery on the chassis. | ||
| View original record | X1756 To E. from EH. ----------- X.1756. X.3129. X.2565. X. 664. EH1/LG.10.1.19. 10th January 1919. With reference to your note E2/G.8.1.19., there is one point you have not mentioned as regards the… | ||
| Scan008 | Chassis wiring scheme and sending a dismantled round tube radiator matrix sample for examination. | ||
| View original record | Contd - chassis, I do not see how we can start on any respectable wiring scheme. Will yoy please let us know what you think about this, because we are getting well on with the model chassis. We have… | ||
| Scan009 | New design for a speedometer drive, proposing a pulley and belt system driven from the propeller shaft. | ||
| View original record | Extract from - EH1/1g.10119. To E. from EH. 10th January 1919. X.1756. With reference to your note E2/G.8119., there is one point you have not mentioned as regards the new car. It was arranged (see… | ||
| Scan010 | Performance of a Waltham speedometer, noting its moving scale design as a drawback, and recommending a trial. | ||
| View original record | X1756 W/S. To H. from Hs. Hs2/LG13.10.20. X.2915. RE WALTHAM SPEEDOMETER. X.1756. With reference to your request to fit a Waltham speedometer. We are running a Waltham speedometer on one of the… | ||
| Scan011 | Letter from Portland Motor Co. Ltd. proposing a meeting to demonstrate a patented speedometer with a gear change indicator. | ||
| View original record | X1756 CUSTOMERS' CARS ARE DRIVEN BY MEMBERS OF OUR STAFF ENTIRELY AT CUSTOMERS' OWN RISK PORTLAND MOTOR CO. LTD. TELEPHONE NOS. 240 AND 239 (TWO LINES) SHOW ROOM SALES DEPT. 58 LEEMING STREET REF.… | ||
| Scan012 | Letter to The Portland Garage regarding a proposed instrument by a Mr. Braithwaite, requesting sketches instead of a visit. | ||
| View original record | X1756 HS2/LG. 2nd. April 1934. The Portland Garage, Clumber Street, Mansfield. Dear Mr. Evinson, Thank you for your letter of the 1st. inst. I would recommend that you get Mr. Braithwaite to send… | ||
| Scan013 | Letter enclosing a sketch and photographs of a protected mechanism related to a speedometer and gear ratios. | ||
| View original record | X1756 22 Shambles St Barnsley April 10/34 E.W. Hives Esq. c/o Messrs Rolls Royce Ld Derby. Dear Sir, Your letter to Mr Edinson of Mansfield (your Ref H.S.2/LG) has been handed on to me by that… | ||
| Scan014 | The conclusion of a handwritten letter regarding the return of drawings and photographs. | ||
| View original record | to receive the drawing and photographs back. and shall greatly value any opinion you may care to express Yours faithfully Jas H Braithwaite | ||
| Scan015 | Letter declining a proposal for an instrument and suggesting the inventor approach accessory makers. | ||
| View original record | X1756 Hs3/LG. 11th. April 1924. J.H. Braithewaite, Esq., 22 Shambles Street, Barnsley. Dear Sir, Thank you for your letter of the 10th. inst. enclosing description and photographs of your instrument.… | ||
| Scan016 | Outstanding 1921 invoice for a Watford Speedometer and Clock. | ||
| View original record | Hs. c.c. to Mr/WHH. (Struck through) X1756 Wd/Dn3/BH17.9.24. We have an invoice dated July, 1921, covering a Watford Speedometer, and a Watford Clock, the amount of the Invoice being £6. 15. Od. nett.… | ||
| Scan017 | Order to be sent to Messrs. North's for a Watford Speedometer and Clock. | ||
| View original record | To Wd/Dn. from Hs. X1756 Hs5/LG18.9.24. Answering your Wd/Dn3/BH17.9.24. Will you please send an order to Messrs. North's for 1 Watford Speedometer - and } 1 Watford Clock } £6. 15. Od. nett. O/735.… | ||
| Scan018 | Complaints about A.T. speedometers and the decision to test alternative Smith speedometers. | ||
| View original record | B/W (BX). Copy to Hs. [Handwritten]: X1756 Sg.8/FP.16.4.25. Re: Speedometers. Arising out of complaints of A.T.Speedometers, CJ. asked for some information as to the percentage of complaints, and also… | ||
| Scan019 | Hand Tachograph & Speed Indicator made by the James Jacquet Company of Switzerland. | ||
| View original record | Hs. from ROY. X.1756 ROY9/MG16.3.25 Attached are details of Hand Tachograph & Speed Indicator made by the James Jacquet Company, of Basle, Switzerland - which may be of interest. I can get you a… | ||
| Scan020 | New Cooper-Stewart speedometer which uses figures instead of a needle, offered for testing. | ||
| View original record | TO HS. FROM DA. X1756 DA1/M16.4.25. re. COOPER-STEWART SPEEDOMETER. We had a representative of the Cooper-Stewart people down here the other day, and amongst other things he drew our attention to… | ||
| Scan021 | Delivery of a new Cooper-Stewart speedometer. | ||
| View original record | TO HS. FROM RS. X 1756 RS3/M22.4.25. COOPER- STEWART SPEEDOMETER. Please receive herewith the new Cooper-Stewart speedometer promised by DA. in his memo. a few days ago. RS. | ||
| Scan022 | Decision not to test or adopt the Cooper Stewart speedometer. | ||
| View original record | DA. from Hs. X1756 Hs2/LG27.4.25. COOPER STEWART SPEEDOMETER. We have lately adopted the policy of always buying any accessory we wish to test so that we shall not be under any obligation to the… | ||
| Scan023 | Return of a Cooper-Stewart speedometer without testing. | ||
| View original record | TO HS. FROM DA. K1756 DA8/M30.4.25. re. COOPER-STEWART SPEEDOMETER. Replying to your HS2/LG27425, would you please return this speedometer to Messrs The Cooper-Stewart Engineering Co. Ltd., 136/7 Long… | ||
| Scan024 | Sending a Cooper-Stewart Speedometer back to the manufacturer. | ||
| View original record | To BP. from Hs. c. to Wd/Ms. c. to Stores (Mr. Chatwin). X1756 Hs/LG8.5.25. We are sending into the Stores :- 1 Cooper-Stewart Speedometer and fittings. Will you please have this instrument despatched… | ||
| Scan025 | Letter to Cooper-Stewart Engineering Co. Ltd. regarding the return of a loaned speedometer and fittings. | ||
| View original record | X175G Hsl/LG. 8th. May 1925. Messrs. The Cooper-Stewart Engineering Co.Ltd., 136/7 Long Acre, London, W.C.2. Dear Sirs, We have despatched to you under separate cover 1 Cooper-Stewart speedometer and… | ||
| Scan026 | Outer covering on flexible drives used for speedometers. | ||
| View original record | To BY. from Hs. K1756 Hs3/LG8.7.25. FLEXIBLE DRIVE. We have very little trouble with the outer covering on the flexible drives in connection with speedometers. In any case we think the sample should… | ||
| Scan027 | Potential testing of new instruments from the British Instrument Company Ltd. | ||
| View original record | S/W. Hs. X.1756 CWB15/GM/7-12-26 INSTRUMENTS. A representative (Captain G.A. Lingham (DEC.)) of the British Instrument Company Ltd., Hendon Aerodrome, London, N.W.9. has been directed to me by Colonel… | ||
| Scan028 | Speedometer drive cable standards, fracture issues, and fitting improvements. | ||
| View original record | X1756 E (WW) c.HS. BY12/H. 20.5.27. SPEEDOMETER DRIVE. ---------------- Referring to E2/M.14.5.27. the only standard form of driving end for a speedometer cable is that we specify on our drawing, .140… | ||
| Scan029 | Urgent chassis test requiring discs for Dunlop wire wheels. | ||
| View original record | ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 476 (Four Lines). Re Discs for Dunlop Wire Wheels. EP4/T/L15415. We have a very urgent chassis on test requiring… | ||
| Scan030 | Notification regarding the receipt of a set of nickel-finished Wire Wheel Discs available at the Stores. | ||
| View original record | X.1761. ======== Mer. Mr. Matthews. 18.10.15. EM1/E181015. Please note, we have received one set of Wire Wheel Discs nickel finish, comprising 5 outer shields and 5 inner shields. These may be had on… | ||
| Scan031 | Arrangements for fitting two different types of aluminium discs to wire wheels for comparative testing. | ||
| View original record | R R 235 a-200 T) (S.F. 673 22-3-19) G. 2376 X.3544. X.1761. EH. from BY/RB. BY/RB9/P30.4.19. ALUMINIUM DISCS FOR WIRE WHEELS. ------------------------------- Kindly note that we have now made… | ||
| Scan032 | Policy on developing or recommending disc covers for wire wheels. | ||
| View original record | R.R. 235 a (4-18) T (S.F.674 22-5-19) G. 2374 To R. from Bn. c. to Da. c. to Hs. copy Bn9/W29.9.19. RE DISCS FOR WIRE WHEELS. X.1761 We still receive requests from London to fit Discs to Wire wheels.… | ||
| Scan033 | Requesting a pair of wheels to have discs fitted for testing on a car. | ||
| View original record | X1761 BY/Mtn21/H. 2. 8. 20. Hs. G. Sn. CHASSIS - RE DISCS. Referring to Sales' memo on the above, copy of which we attach, will you kindly arrange to send a pair of wheels to which we can have discs… | ||
| Scan034 | Fitting improved discs to a wheel for examination. | ||
| View original record | copy. S/W. C13/C27.7.20. RE DISCS. D/Sn20/AW/19.7.20. Mr. Spinney has discussed the matter of discs with Barkers. They are willing to fit discs to a wheel and send it to you for your examination, if… | ||
| Scan035 | Requesting a pair of wheels to have discs fitted for chassis X 3374. | ||
| View original record | Hs./c. Sn. R.F.P. X 3374 X 1761 BY/Mtn31/H2.8.20. X 3374 CHASSIS - RE DISC. Referring to Sales' memo on the above, copy of which we attach, will you kindly arrange to send a pair of wheels to which we… | ||
| Scan036 | 'Goshawk 11' front axle design, specifically concerning vertical pivots and wheel compatibility. | ||
| View original record | X.1761 To D.A. from R. c. to CJ. c. to Wor. c. to Hs. c. to EFC. RS/G16.2.21. X.4263 RE "GOSHAWK 11" FRONT AXLE. X.1761. SCHEMES 752, 753 & 758. With reference to the front axle, we cannot wait to… | ||
| Scan037 | Cover letter attaching a letter from Cornercroft Ltd. and requesting remarks on a suggestion within it. | ||
| View original record | X1761 HS. Wd/Dnl/HP289 21. 28th Sept.1921. We attach hereto copy of a letter received from Messrs. Cornercroft Ltd. dated 23rd inst. We should be glad to have your remarks regarding the suggestion… | ||
| Scan038 | Letter from Cornercroft Ltd. regarding the supply and testing of ACE Patent Wheel Discs on a car. | ||
| View original record | R.R. 859. (100 T) S.H.798. 10-12-20. O. 2247. COPY OF A LETTER FROM:- CORNERCROFT LIMITED. ACE WORKS, VECQUERAY STREET, COVENTRY. JAC/EMS. September 23rd 1921. Messrs. Rolls-Royce Ltd., DERBY. Dear… | ||
| Scan039 | Dunlop Wheel fitted with patent discs by Cornercroft Limited. | ||
| View original record | X1761 Hs. from O.O. Wd/Dn3/HP211121. 21st Nov. 1921. We attach hereto a copy of a letter received from Messrs. Cornercroft Limited, regarding the Dunlop Wheel which they are fitting with their patent… | ||
| Scan040 | Copy of a letter from Cornercroft Limited regarding the fitting of ACE Patent Seamless Discs to a Dunlop E. type wheel. | ||
| View original record | W.R. 89 (210T) (SD676 19-7-17) MP18886 COPY OF LETTER FROM:- CORNERCROFT LIMITED., ACE WORKS, VECQUERAY STREET, COVENTRY. Our Ref. JAC/EMS. November 18th 1921. Messrs. Rolls-Royce Ltd., Nightingale… | ||
| Scan041 | Dunlop Wheel sent to Messrs. Cornercroft Limited for fitting with patent discs. | ||
| View original record | Hs. from O.O. X1761 Wd/Dnl/HP241121. 24th Nov.1921. With reference to the Dunlop Wheel which we have sent to Messrs. Cornercroft Limited., Coventry., to be fitted with a pair of their patent discs;… | ||
| Scan042 | Unsatisfactory performance of disc wheels on 20 HP cars, citing issues like noisy axles and general booming. | ||
| View original record | W/S BJ c. to C. c. to FN. c. to Hs. X.1761. EP8/H2.3.23. RE. DISCS TO WHEELS - UNSATISFACTORY ON 20 HP. CARS. X.1761. X3599. We find in making our final tests of complete cars, that there is a 'move'… | ||
| Scan043 | Requesting a test of Dunlop Discs as a potential improvement over the 'Barker' Discs. | ||
| View original record | X1761 ROY Hs. from ROY. c. to RV ROY18/MG9.5.23 Herewith a set of Dunlop Discs which have been put forward by this Company as an improvement on the "Barker" Discs, which latter are now being sold in… | ||
| Scan044 | Company's refusal to test or recommend Dunlop Discs. | ||
| View original record | To Roy. from Hs. c. to BY. X176/ Hs3/LG24.5.23. DUNLOP DISCS. With reference to the Dunlop Discs which have been sent to us. As we do not recommend any type of disc for our car, we do not see any… | ||
| Scan045 | New Dunlop wheel discs and a proposal to send a set for inspection. | ||
| View original record | C. from ROY. c. to Hs. X1761 ROY7/MG28.5.23 ---------------- Dunlop Discs. At present, where a client requires Discs, I believe you generally fit the Barker. The Dunlop Company have recently brought… | ||
| Scan046 | Dispatch of 5 Dunlop wheel discs to stores. | ||
| View original record | X1761 Ms/Mr. Alvey O.O. from Hs. c. to Chat. c. to BP. Hsl/LGS.6.23. We are sending into the Stores :- 5 Discs for Dunlop wheels to be despatched to Conduit/St. to O.O. instructions. Hs. | ||
| Scan047 | Whether wheel discs make cars noisier and if further tests are needed. | ||
| View original record | To P.N. from B.J. Copy to.... Hs. BJ11/H17.9.24. X1761 WHEEL DISCS. With reference to Mr. Nutt's letter, attached, I was speaking to Mr. Royce yesterday with regard to why we advise customers to have… | ||
| Scan048 | Letter from Barker & Co. (Coachbuilders) to Mr. Johnson regarding noise levels of their wheel discs. | ||
| View original record | BARKER & CO. (Coachbuilders) Ltd. 66 and 67, South Audley Street, London, W.1. Dear Mr. Johnson, "Barker" Wheel Discs. Since my interview and conversation with you re Barker Wheel Discs, I have used… | ||
| Scan049 | The advantages and disadvantages of fitting discs to wire wheels, focusing on noise amplification and rusting spokes. | ||
| View original record | R.R. 493A (46 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. X1761 REF: Hs1/LG23.9.24. To R. from Hs. c. to CJ. BJ. c. to PN. EP. c. to BY. Wor. DISCS FOR WIRE WHEELS. Our Test Dept. have… | ||
| Scan050 | Communication regarding a letter received from Cornercraft Ltd. concerning testing a set of Wire Wheel Discs. | ||
| View original record | Hs. (Experimental.) X/1761 ROY/MS4/P9.12.27. STAMP: RECEIVED 10 DEC 1927 We attach hereto a letter we have received from Cornercraft Ltd., dated 7th instant, and having reference to Wire Wheel Discs.… | ||
| Scan051 | Promotional leaflet for 'Super Ace' patent wheel discs. | ||
| View original record | LIST No 11. SUPER ACE- DISCS PATENT The World's Best Wheel Discs. | ||
| Scan052 | Sales letter from Cornercroft Limited promoting their Ace Super Wheel Discs for use on Rolls-Royce cars. | ||
| View original record | TELEPHONE: COVENTRY 4123. (2 LINES) TRADE ACE MARK. TELEGRAMS: 'DISCS COVENTRY' CORNERCROFT LIMITED. Ace Works Vecqueray Street, COVENTRY. DIRECTORS. T. WHEELER MEATES. NORMAN RYCROFT. J. ALAN CORNER.… | ||
| Scan053 | Page two of a letter from Cornercroft Limited regarding a business proposal and a planned visit to Derby. | ||
| View original record | - 2 - Messrs.Rolls-Royce Ltd., 7th December 1927. We trust that this will be of interest to you and that we shall have the pleasure of your business. The writer will be in Derby tomorrow and hopes he… | ||
| Scan054 | The receipt of 'Ace' discs, with a query about the quantity of spokes and correctness of the nipples. | ||
| View original record | Mr Coverley X.1761 25.1.28 We have got the "Ace" Disc's (question whether quantity of spokes & Nipples are correct) Ace Works Vecqueray St Coventry RAF Well Base GWBS 21. Rim C. Pass. | ||
| Scan055 | The disposal of surplus blue painted wheel discs no longer required for the Baden & Prague Propaganda Car, chassis 29-CL. | ||
| View original record | [Stamp: 17 AUG 1928] [Handwritten]: X1761 [Handwritten]: S/W. Copy J.P. Whr/Mgn5/AP. 16. 8. 28. re chassis 29-CL. - Baden & Prague Propaganda Car. [Handwritten]: Late The blue painted wheel discs ex… | ||
| Scan056 | Request for the return of wheel discs from Lillie Hall. | ||
| View original record | X1761 W/S. Whr/Mgn. from Hs/Rm. Hs/Rm2/LG20.8.28. WHEEL DISCS. 29-CL. With reference to Whr/Mgn5/AP16.8.28. If these discs are of no use to Lillie Hall we should like them returned here as we have a… | ||
| Scan057 | The return of wheel discs from chassis 29-CL, the Baden & Prague Propaganda Car, to Derby for stock. | ||
| View original record | X1761 X8950 S/W. Copy to J.P. Whr/Mgnll/AP. 23. 8. 28. re chassis 29-CL. Baden & Prague Propaganda Car. With reference to your Hs/Rm2/Lg.20.8.28., we note that you would like the wheel discs ex the… | ||
| Scan058 | Query regarding the performance impact of fitting wheel discs to a Continental Trials car, chassis 31-GX. | ||
| View original record | S/W. Hs...from PN. Copy to Sg. Worx Cx. 81761. PN.11/WT9.6.31. In connection with our new Continental Trials car (Chassis 31-GX) being finished by Park Ward, the question arises as to the provision of… | ||
| Scan059 | Comparative performance of disc wheels versus wire wheels at high speeds. | ||
| View original record | To PN. From Hs/Rm. c. to Sg. Wor. c. to Cx. 81761. Hs/Rm.3/KT.10.6.31. We have not made any comparative tests on the track comparing disc wheels with wire wheels for maximum speeds. In view of the… | ||
| Scan060 | Dynamometer readings after altering the cam wheel timing on chassis 1144. | ||
| View original record | R.R. 148 (20 H) (H. 360. 16.9.09) E.P. 4941. X1770 4000 Reads taken by Lowe on Dynamometer 4/10/09. 1144 Chassis was improved in power by altering Cam wheel 1 tooth later. Previous timing - average in… | ||
| Scan061 | Graph and table showing performance curves with different engine timing settings for a 64lbs compression engine. | ||
| View original record | Title: Timing curves 64lbs compression Engine 5.7.10 Table of Settings: | | YO | YC | EO | EC | Notes | |---|---|---|---|---|---| | A | 3 1/8 | 8 2/3 | 21 2/3 | +1 1/4 | as set. (Driving members) | |… | ||
| Scan062 | Graph showing timing curves for the 64 lbs Compression Engine J 7.10. | ||
| View original record | 2 Timing Curves of 64 lbs Compression Engine J 7.10 Balanced Camshaft drg no. E4885 blocus 1345 Table: | | I o | y c | E o | E C | |--- |--- |--- |--- |--- | | A1 | 38 | 52 | 21 1/3 | +1 1/4 | drg. |… | ||
| Scan063 | Graph and table showing timing curves for a 64 lbs compression engine, plotting horsepower against RPM. | ||
| View original record | No 3 continued. Timing Curves 64 lbs Compression engine [Table] Y.O | S.C | E.O | E.C A | 9 1/2 | 6 1/3 | 2 1/3 | 7 1/2 | orig. F | 4 1/2 | 6 1/3 | 21 | 1 1/2 | with O.K. steel double inlet G | 5 | 5… | ||
| Scan064 | Engine power and performance test results for chassis 1510. | ||
| View original record | R R. 148 (20m) (P 689.14.11.10) G 1239. comparing 1500 & 1100 cars 4000 POWER X1770 HP 1510 Chassis. E1066 Eng revs. H.P. 500 20.8 750 30.6 - 1000 38.2 1250 42.8 1500 46.2 1750 (Stamp: Used when… | ||
| Scan065 | Valve lift diagrams and proposing modifications to improve engine performance. | ||
| View original record | COPY. To E. from R. Copies to J. Na. Wor. for EH. X/1770 R5/B21216. February 21st. 1916. Re Valve Lift Diagrams. Thank you for your excellent investigations of the valve areas. It seems manifest to me… | ||
| Scan066 | Recommendation to slightly retard engine valve timing for improved power. | ||
| View original record | War for Ed and St. Cr to EP. EP6/W14516. Re. ENGINE VALVE TIMING. EX. JUN 14 1916 RECEIVED We find on test that with the most powerful engines the valve timing is, if anything, a little later than the… | ||
| Scan067 | Requesting remarks on an attached letter from Springfield regarding valve timing. | ||
| View original record | FSG TO EP from EWT. c. to My. c. to Hs. X1770 EWT6/PG19.8.21: RECEIVED Re Valve Timing. X1770 Attached herewith is copy of letter from Springfield reference Oyl-C 1821, dated 1st August. Will you… | ||
| Scan068 | Discrepancy in valve timing and requesting revised figures and permissible variations. | ||
| View original record | Oyl - G 1821 August 1, 1921 Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Attention: Works Committee. Dear Sir:- Re: Valve Timing. We wish to bring to the attention of the… | ||
| Scan069 | Discrepancy between drawing specifications and test figures for engine valve timing. | ||
| View original record | Cyl - G 1821 Sheet #2. Aug.1.21 The difference between drawing and Test figures are as follows: Inlet opens Inlet closes Exhaust opens Exhaust closes after T.D.C. after B.D.C. before B.D.C. after… | ||
| Scan070 | Faults with camshaft and valve timing and proposing an inspection to establish standard limits. | ||
| View original record | BY. from EP. c. to Sft. c. to Hs. X1770 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… | ||
| Scan071 | Limits and accuracy of engine valve timing for the 40/50 chassis. | ||
| View original record | X1770 RR. from BY. WEH. Hs. BY4-F2.9.21. X1770 40/50 CHASSIS. CAMSHAFTS. X3423 RE LIMITS ON THE TIMING OF THE ENGINE. There appears to be quite a number of points where slight inaccuracies can creep… | ||
| Scan072 | Modifications to the valve timing for the Goshawk engine. | ||
| View original record | To Hs. from R. c. to CJ. CY. EP. X1770 R4/M6.7.23. GOSHAWK VALVE TIMING. X.1770 X.4226 I understand from the experiments on Gos.1. that it is advisable to somewhat modify the valve timing on Goshawk… | ||
| Scan073 | Modifications to the timing of the Goshawk 11 engine, specifically the exhaust and inlet cams. | ||
| View original record | X1770 To Hs. from R. c. to CJ. BJ. Wor. c. to PN. BY. EP. RE. GOSHAWK 11. TIMING. X.3942 X.1770. Our letter of the 12th. inst. states that the exhaust cam is too short as given on your recent diagram,… | ||
| Scan074 | Determining the accuracy of checking valve timing by hand versus when the engine is running. | ||
| View original record | X1770 EXPERIMENTAL REPORT. COPIES TO: R.C.J. By. E. Da. EP. RH. OK. PN. OY. Expl. No. X.4226. REF. HS3/LG16.8.23. OBJECT OF TEST. To determine whether checking valve timing by turning the engine by… | ||
| Scan075 | Engine valve timing variations and gear rattles. | ||
| View original record | R.R. 493A (40 H) (SL 42 12-7-23). J.H., D. EXPERIMENTAL REPORT. Expl. No. 4226 REF: Hez/A M C/9.9.23. Variation in Timing. As the engine speed is increased, the valve timing becomes slightly later.… | ||
| Scan076 | Unsatisfactory method for checking engine timing on Series III Condors and proposing solutions. | ||
| View original record | BM (crossed out) C.Rg. (crossed out) c. Hs. c. Sft. *1770 EP4/H5.2.24. re. Series III Condors. Marking Scheme for Correct Timing. The present means of checking the timing is unsatisfactory, there… | ||
| Scan077 | Test bench results comparing B.HP output and valve timings for 110° and standard camshafts. | ||
| View original record | COPY½ X1770 29.4.24. TEST BENCH - CUTOUT OPEN. B.H.P. OUTPUT CURVES - 110º and STANDARD CAMSHAFTS. X3423 X1770 R.P.M. 110º STD. % GAIN. 520 25.8 24.6 5.5 750 36.7 35 5.5 1000 48.7 46.7 5.0 1250 60.5… | ||
| Scan078 | Confirming verbal instructions for new valve lift curves and cam alterations. | ||
| View original record | To BY. from E. c.c. to BJ. R. c.c. to RG. Hs. X1770 E2/M21.7.26. F.10. CAM FORMS. X.4003 RE. SCHEME 723. X.3822 X.1770 In confirmation of R's verbal instructions during visit of Hs. and BY. yesterday,… | ||
| Scan079 | Adjustments to valve timing and improvements to valve spring design. | ||
| View original record | To RG & Hs. from R. BY. c. to B.J. X1770 R3/M23. 8. 26. RE. VALVE TIMING. X.3822 X.1770 X.2993 We feel we are getting towards an excessively early exhaust and a late inlet, and that much of the worry… | ||
| Scan080 | Duplex and triple valve spring designs, proposing a double spigot to prevent the springs from rubbing together. | ||
| View original record | contd :- -2- and a duplex spring. In the case of the triple spring design we propose to use a double spigot with the object of preventing the valve springs rubbing together. Since there are 48 valves… | ||
| Scan081 | Adjustments to valve timing, cam forms, and valve springs. | ||
| View original record | X1770? E.H. c. Hg. c. HS. VALVE TIMING. ---------- Referring to R3/M. 28.8.26. we note your remarks in regard to trying out the cam form shown on Scheme 796 for the exhaust, and Scheme 797 for the… | ||
| Scan082 | Inconsistencies in timing procedures for aero engines and requesting a standardized, written scheme. | ||
| View original record | X1770 Rg. Hs. BY4/H. 21.6.27. AERO ENGINES - TIMING. Apparently none of our aero engines are timed by the instructions marked, in the case of the Eagle and Falcon 3, on the annulus gear, and even the… | ||
| Scan083 | Production and attachment of engine timing plates. | ||
| View original record | - 2 - BY4/H. 21.6.27. see that this is handed over to the AID, and that plates of some description are produced, recording the timing, and how it is to be obtained, and the plates themselves to be… | ||
| Scan084 | Comments and suggestions on the timing of aero engines, specifically the Condor IV & VIII. | ||
| View original record | To BY. from Hs. c. to RG. c. to EP. X1770 Hs2/LG23.6.27. AERO ENGINE TIMING. X3646 With reference to BY4/H21.6.27. We offer the following comments and suggestions on the timing of the aero engines… | ||
| Scan085 | Technical note detailing engine timing procedures and specifications for Condor and Falcon engines. | ||
| View original record | contd :- -2- Unless it was decided to fix a disc and spy hole to Condor Vlll, the same method would have to be used. (B) CONDOR llla. The existing C.111. method of timing can be used in this case,… | ||
| Scan086 | Proposed scheme for checking the timing of the F.11 engine when fitted in an aeroplane. | ||
| View original record | Y1770 R. c.c. BJ. Hor. c.c. By. Hs. Rg2/L.W.16.8.27 ROLLS-ROYCE F.11 ENGINE We are sending you herewith print of DES.669, showing the proposed scheme for checking the timing of the F.11 engine when… | ||
| Scan087 | Proposed change to the Condor engine valve lift curve and cam timing. | ||
| View original record | BY. from E. c. to BJ. RG. Hs. Kimo El/M10.9.27. X.3616 X.1770 PROPOSED CONDOR VALVE LIFT CURVE. In reply to your memo. BY12/G7.9.27, we cannot see that a difference of 2 or 3 thousandths of an inch… | ||
| Scan088 | Comparison of different engine timing schemes depicted in circular diagrams. | ||
| View original record | -2- PRESENT RR.F. TIMING SCH. 888. 20 16 48 60 12 8 40 52 .010 clearance. Heavy acceleration only. RR.F. TIMING. HS/VH1/LG10.8.27. 1 8 39 39 Clearance unknown. We cannot understand this. E. | ||
| Scan089 | Timing difficulties and requesting a definitive setting for the F.11 & 12 engines. | ||
| View original record | X1770 BY5/H. 30.9.27. ROLLS ROYCE F.11 & 12. TIMING. ------------------------------ Mr.Wilkins is in real difficulties over the timing of the engine. He is certain that the engines are not timed like… | ||
| Scan090 | Timing procedures for F.11 & 12 engines, covering camshaft and magneto timing. | ||
| View original record | To BY. from Hs/VH. c. to RG. EP. V/1770 Hs/VHL/LG6.10.27. RR. F.11. & 12 TIMING. X1770 X4003 X3822 With reference to BY5/H30.9.27. Until we have complete records from the first 25 engines we are not… | ||
| Scan091 | Technical note detailing engine timing settings, clearances, and marking specifications for a geared engine. | ||
| View original record | contd :- -2- in the fully advanced positions. The 35º will be obtained by two marks on the thrust housing E.30557 :- 1.19" or 35 X .632 = 22.1º apart for a .632 geared engine, and 1.04" or 35 X .550 =… | ||
| Scan092 | Allowances and potential inaccuracies in engine timing and camshaft grinding. | ||
| View original record | contd :- -3- (1) Allowance when timing engines, roughly 2º (crankshaft) either way. (2) Allowance for error with regard to setting pointer, roughly 1º (crankshaft) either way. (3) Cam angularity… | ||
| Scan093 | Technical memorandum detailing the procedure for timing F.11 and F.12 engines. | ||
| View original record | To EP. from Hs/VH. c. to Hs/TMW. c. to Hs/TAG. X1770 Hs/VH2/LG6.10.27. RR. F.11. and F.12. TIMING. XA003 E3822 With regard to the timing of these engines, it is necessary that we should :- (a) Declare… | ||
| Scan094 | Confirming engine timing specifications for the F.11 & 12a engines following a request from the A.I.D. | ||
| View original record | X1770 To DHG from RHC. C. Hs. C. Mr. Wilkins(A.I.D) RHC7/BE.18.10.27. RE F.11. & 12a We understand that the A.I.D. insist that we declare a timing for the above engines. The timings we have been… | ||
| Scan095 | Comparative tests of new Condor low lift, long duration camshafts on a Condor 111A engine. | ||
| View original record | To R. from Hs/VHL. c. to B.J. Wor. c. to R.G. H. c. to BY.C 81770 Hs/VHL/LGS.11.27. NEW CONDOR LOW LIFT CAMSHAFTS. V4598 E.30971/2. We have made some comparative tests on a Condor 111A engine with :-… | ||
| Scan096 | Effects of new camshafts on valve overlap, fuel consumption, and vibration. | ||
| View original record | contd :- -2- It will be observed that in the case of the new camshafts there is an actual overlap of 29° compared with 3° on the old camshafts. This represents an increase of 26° - 4° of which are due… | ||
| Scan097 | Performance comparison graph between standard and low-lift camshafts for the Condor III A engine at a 6.5:1 compression ratio. | ||
| View original record | CONDOR III A 6.5/1 COMP: RATIO CAMSHAFT COMPARISONS. A.- STANDARD CAMSHAFTS ① TIMING CLEARANCE IN: .025" EX: .025" Valve Timing Diagram A1: TDC, IO 9°, EC 10°, BDC, EO 30°, IC 49° ② WORKING CLEARANCE… | ||
| Scan098 | Faded document page with a Print Room date stamp in the bottom right corner. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM 17 NOV 1927 DERBY. | ||
| Scan099 | On adjustments to the magneto timing for an F.XII No. 7 engine and the resulting changes in RPM. | ||
| View original record | X1770 To HS Exhaust Mag timing on F.XII No 7 engine altered to 38 1/2° BTDC The drop in RPM now is A side switched off (35°) 2100 Both on B " (38 1/2°) 2120 2250 The old timing 35° BTDC for both mags… | ||
| Scan100 | Valve timing tests and clearances for F.XI and F.XII engines. | ||
| View original record | To RG. from Hs/VH. c. to BY. c. to EP. c. to E. X/1770 Hs/VH1/LG26.11.27. RR. F.XI and XII - VALVE TIMING. Further to our report Hs/VH1/LG6.10.27. we have carried out tests :- (a) To investigate the… | ||
| Scan101 | Page two of a document detailing engine valve timing tests and specifications. | ||
| View original record | contd :- -2- Al. piston was exactly on T.D.C., and A. side camshaft drive engaged so that Al. inlet valves were just about to open with a .010" feeler between the rocker and the valve stem. This was… | ||
| Scan102 | Valve timing specifications and instructions for F.XI and F.XII engines. | ||
| View original record | To Mr. Wilkins AID. To RG. from Hs/VH. C. to HY. C. to [obscured] C. to [obscured] X1770 Hs/VH1/LG26.11.27. RR. F.XI. AND Xl1 - VALVE TIMING. From the experience gained in producing 30 engines, we… | ||
| Scan103 | Inaccuracy of the F.XI & XLI timing device and proposing an alternative 'oil tube method' for valve timing. | ||
| View original record | To RG. from Hs/VH. c. to BY. X1770 Hs/VHl/LG10.12.27. RR. F.XI & XLI TIMING DEVICE. DES.693. We have used the above timing device for finding top dead centre and setting the magneto to timing. The… | ||
| Scan104 | Report page detailing the accuracy of engine timing methods and devices. | ||
| View original record | contd :- -2- Thus with 1/4" oil tube, multiplication = 5²/.25² = 400/1 Checking by the oil tube method has shewn that the timing device is only accurate to within 3° or 4° on either side of T. D. C.… | ||
| Scan105 | Valve and magneto timing specifications with a timing diagram. | ||
| View original record | X1770 BY/Cgh3/K. 12. 12. 27. Hs Mr. EP. C. Hs. G. Hnc Copy for Mr Wilkins (A.I.D). RECEIVED RR. F.11. VALVE TIMING. -------------------- We give below particulars of the valve and magneto timing which… | ||
| Scan106 | Particulars of the valve and magneto timing for the F.12 test engine, including a timing diagram. | ||
| View original record | BY/EL. c. EP. c. Hs c. RHO. c. Mr. Wilkins (A.I.D.). X/mo RECEIVED RR. F.12. VALVE TIMING. We give below particulars of the valve and magneto timing which should be worked to on the above type test… | ||
| Scan107 | Best valve and magneto timing for the F.XII engine type test. | ||
| View original record | To EP. from Hs/Rm. X1770 Hs/Rm5/LG21.12.27. RR. F.XII VALVE TIMING. X1770 X3866 With reference to BY/CGH/G21.12.27. This is the best valve and magneto timing that we know of. We are certain that it… | ||
| Scan108 | Clarifying valve timing particulars and clearances for the F.X No.14 engine. | ||
| View original record | X1770 Expl: Dept: Messrs. Rolls-Royce Ltd., Derby. Hs/VH1/LG31.1.28. Mr. Wenger from Hs/VH. X2810 We give below particulars asked for :- RR. F.X No.14 Valve timing. Time 38º A.B.D.C. for Exh in.cl.… | ||
| Scan109 | Correction to the type test report for the Condor 3-A, No. 320, concerning ignition timing. | ||
| View original record | X1770 To H. at Le Canadel c. E. for W.W. File c. Ed. By. Hs. RP. c. Mr. Wilkins, A.I.D. Rg4/LW.21. 2. 28 TYPE TEST OF CONDOR 3-A, NO.320 Will you please note that the following correction should be… | ||
| Scan110 | Amended engine timing instructions for F.11 & F.XII models due to issues with camshaft drive covers. | ||
| View original record | To RG. from Hs/VH. c.c. to BY/NW. c.c. to EF. Handwritten: X1770 Hs/VH1/LG2. 5. 28. RR. F.11 & F.XII - ENGINE TIMING. Handwritten: X1770 / X4003 We have experienced some trouble on the test beds due… | ||
| Scan111 | Instructions for timing the F.XI and XII engines. | ||
| View original record | TIMING OF RR.F.XI & X11 ENGINES. For Instruction Book. (1) Set the inlet tappets on A1. and B6. cyls. with a clearance of .025". (2) With the camshaft drives disengaged, turn the engine until A1.… | ||
| Scan112 | Description of two methods for finding the top dead centre (TDC) position of an engine piston. | ||
| View original record | contd :- -3- A very accurate method of finding the firing top dead centre (valves closed) can be arranged by filling the combustion space wth oil, using a short length of glass (or metal) tube fitted… | ||
| Scan113 | Query regarding the timing arrangement for F-Type engines and the handwritten response. | ||
| View original record | Rg. Hs. X177R BY1/G.3.5.23. 50 RR. F. TYPE ENGINES - TIMING ARRANGEMENT. I would like to know definitely whether the timing scheme which was instructed experimentally from DES.669 is satisfactory and… | ||
| Scan114 | Magneto timing for RR.F.XI.B. and F.XII.B. engines with a 7/1 compression ratio. | ||
| View original record | To BY. from Hs/VH. c. to RG. c. to EP. Handwritten: X3835 X1770 Hs/VH/LG14.6.28. RR.F.XI.B. AND F.XII.B. MAGNETO TIMING. Handwritten: X1770 X3835 7/1 Compression ratio. To give a reasonable drop in… | ||
| Scan115 | Final recommendation for ignition timing on the aluminium head engine. | ||
| View original record | X.1770 To BY. from Hs/Rn. c. to MX. c. to EP. Hs/Rn5/LG14.6.28. VALVE TIMING. X7050 Our final recommendations as regards the timing of the aluminium head engine is : Ignition fully advanced 15º… | ||
| Scan116 | Letter to the Air Ministry regarding modification number 34 for F. Type Engines. | ||
| View original record | X1770 c. R. c. By. Hs. Ry. c. EP. D/EP. RHC. c. Mr.Wilkins, A.I.D. RgB/LW. 20th July 1928 The Secretary, Air Ministry, Adastral House, Kingsway, W.C.2. For the attention of Capt. A.G. Forsyth. Dear… | ||
| Scan117 | The development status of the 'H' engine, detailing requirements for the racing variant and the reliability of the service version. | ||
| View original record | 41770 To R. from Hs. c.c. to BJ. Wor. c.c. to RG. E. c.c. to BY. HS4/LG22, 8. 28. REPORT ON DEVELOPMENT OF 'H' ENGINE. X 4453 X 4674 X 4465 The development of this engine as a racing engine is waiting… | ||
| Scan118 | The performance testing and proposed valve timing modifications for the 'H' engine. | ||
| View original record | 'H' ENGINE. This engine has now completed nearly 30 hrs. running, tests being made over a speed range of from 1800 to 2500 r.p.m. With a supercharger gear ratio of 5.58/1 the maximum C/B.HP. obtained… | ||
| Scan119 | Supercharger test, detailing performance, issues encountered, and proposed changes. | ||
| View original record | contd :- -2- SUPERCHARGER. A test has been made with 10/1 gears in the supercharger drive, the S/C. being throttled to limit the boost to 8 lbs/sq.in. At 2200 r.p.m. the power obtained was 1060 B.HP.… | ||
| Scan120 | Valve timing specifications for RR.F. and H. supercharged engines. | ||
| View original record | RG. from E. c. to BJ. Hs. BY. Lr. X.1770 E1/M30.8.28. VALVE TIMING FOR RR.F. AND H. SUPERCHARGED ENGINES. Re. proposed timing for the above. R. agrees to this as follows :- IN.14 14 EX. Clearance =… | ||
| Scan121 | Alteration to engine timing with two proposed camshaft designs. | ||
| View original record | Hs. from E. c. to BJ. BY. X1770 E2/M30. 8.28. EAC.10 ENGINE. X.7090 X.411 X.1770 Referring to your report Hs/ACL1/LG28. 8.28., it is concluded that an alteration to the timing would be beneficial, and… | ||
| Scan122 | The magneto and valve timing settings for supercharged engines. | ||
| View original record | To RG. from Hs. c. to E.B. By c. to EP. X1770 Hs3/LG13. 9:28. MAGNETO & VALVE TIMING. X1770 SUPERCHARGED ENGINES. --------------------- Magnetos. These should be synchronised to fire 40º BTDC. in the… | ||
| Scan123 | Power curve comparison between a long duration camshaft and a standard camshaft for an FXI engine. | ||
| View original record | POWER CURVE WITH LONG DURṆ CAMSHAFT. COMPARISON WITH STANDARD CAMSHAFT. ROLLS ROYCE FXI ENGINE N° SLA. T49. COMPRESSION RATIO = 7:1 GEAR RATIO = .552. MAGNETO TIMING = 40° BEFORE T.D.C. FUEL USED =… | ||
| Scan124 | Faint document cover sheet with a 'Print Room' stamp. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM, 13 OCT 1928 DERBY. | ||
| Scan125 | Submission of Modification No. 46 regarding the timing change for F. Type engines. | ||
| View original record | X1770 C. R. C. Hy. Hs. Py. C. EP. D/RR. RHC. C. Mr. Wilkins, A.I.D. Rg2/LW. 9th November 1928 The Secretary, Air Ministry, Adastral House, Kingsway, W.C.2. For the attention of Captain A. G. Forsyth… | ||
| Scan126 | The alteration of timing markings for 'SS' engine flywheels to accommodate a new camshaft. | ||
| View original record | To BY. from Hs. c. to Wor. c. to RHC. X1770 Hs2/LG20.11.28. 'SS' ENGINE - TIMING MARKING FOR FLYWHEELS. We have determined the best valve timing to employ with the 116° camshaft E.77322 and append a… | ||
| Scan127 | Diagram of valve timing markings on a flywheel for an S.S. Engine. | ||
| View original record | V492. VALVE TIMING WITH .020 CLEARANCE BETWEEN VALVE STEM AND ROCKER ARM FACE. CAMSHAFT E77322. CAM FORMS E77854/5. T.D.C. & E.C. I.O. 24° 1 & 6. E.O. 36° B.D.C. 44° I.C. VALVE TIMING MARKINGS ON… | ||
| Scan128 | Camshaft comparison tests for full and moderate supercharged engines, including valve timing data. | ||
| View original record | To R. from Hs/VH. c. to BJ. SG. c. to Mor. RG. c. to E. BY. X1770 Hs/VH1/LG3.1.29. CAMSHAFT COMPARISON TESTS - X1770 / 49003 ON (1) Full supercharged engine. (2) Moderate supercharged engine. Tests… | ||
| Scan129 | Graph of comparative power curves for a fully supercharged engine at 10,500 feet, comparing standard and long duration camshafts. | ||
| View original record | R.R. FXII-S-105. FULL SUPERCHARGED ENGINE COMPARATIVE POWER CURVES AT 10,500' A WITH STANDARD CAMSHAFTS B WITH LONG DURATION CAMSHAFTS INCREASE IN HORSE-POWER OBTAINED +5 +7 +11 HORSE-POWER CORRECTED… | ||
| Scan130 | Blank page with a print room date stamp in the bottom right corner. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM 3 JAN 1929 DERBY. | ||
| Scan131 | Comparative power curves at 4000' for a moderate supercharger engine, comparing standard and long duration camshafts. | ||
| View original record | RR FXII-MS-113. MODERATE SUPERCHARGER ENGINE COMPARATIVE POWER CURVES AT 4000' A. WITH STANDARD CAMSHAFTS B. WITH LONG DURATION CAMSHAFTS INCREASE IN HORSE-POWER OBTAINED +16 +27 HORSE-POWER CORRECTED… | ||
| Scan132 | Graph of comparative power curves at full throttle for a moderate supercharger engine, comparing standard and long duration camshafts. | ||
| View original record | R.R. F.XII-MS-113 MODERATE SUPERCHARGER ENGINE COMPARATIVE POWER CURVES AT FULL THROTTLE. A WITH STANDARD CAMSHAFTS. B WITH LONG DURATION CAMSHAFTS. FUEL:- 60/40 BENSOL/AVIATION PLUGS:- LODGE R.40… | ||
| Scan133 | Heavily faded typed document with a purple 'Print Room' stamp in the bottom right corner. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM 3 JAN 1929 DERBY. [The main body of text is illegible due to severe fading.] | ||
| Scan134 | Confirming Mr. Royce's requested change to the 20 HP inlet cam form (Sch. 1153) to improve valve gear performance. | ||
| View original record | BY. from E. X1770 E3/M11.6.29. c. to Sg. Hs. 20 HP. VALVE TIMING. X1770 X5770 (crossed out) Referring to your memo. Byl/G8.6.29, and telephone conversation of today's date, kindly note this confirms… | ||
| Scan135 | Correspondence concerning valve timing and camshaft forms for the 20 HP car, referencing blueprints of valve lift curves. | ||
| View original record | R. C. Bgr. C. Worr C. Hs. C. Day X1770 BYL/G.8.6.29. X4090 X5090 X1440 CHINA. VALVE TIMING - RE CAMSHAFT. Referring to R1/M5.6.29, we had already in antici-pation of your views produced cam forms for… | ||
| Scan136 | Engine timing, power curve data, compression ratio, and clearance volume for an S.S. model. | ||
| View original record | To EP. from Hs/Gy. Re. S.S. x 1940. Hs/Gy1/MJ.11.7.29. X1440 X928 X490 X381 (1) Std. Valve Timing. We attach print V.527, Standard Valve Timing. (2) Std. Ignition Timing. This is 12° before T.D.C.… | ||
| Scan137 | Letter from the Admiralty Air Department requesting tests on electrical speed indicators for aero engines. | ||
| View original record | W-Wormald X.1782 COPY Air Department, ADMIRALTY, LONDON, S.W. 20 June, 1915. [STAMP: RECEIVED 22 JUN 1915] Gentlemen: X. 1807. Electrical Speed Indicators. [Handwritten above: X-2125 X.1782] A small… | ||
| Scan138 | The experimentation on a magneto generator and Weston voltmeter for electrical speed indicators. | ||
| View original record | COPY. X.1782 To Wor. for Hy. from R. Copy to J. Wor. for Mr Ellis 26615 25615 R5/IB24615. June 24th. 1915. X.2125 Re Magneto Generator and Weston Voltmeter X1782. Electrical speed indicators. X.1807… | ||
| Scan139 | Generator armature reaction, voltmeter readings, and a method for diagnosing errors. | ||
| View original record | H.R. SWAD To Wor. for Hy from R. R5/IB24615. COPY 2 currents, the reaction of the armature of the generator will cause the field magnets to weaken, and therefore the high reading would read low on the… | ||
| Scan140 | Unsteady readings on a Weston instrument and requesting a test with a suitable resistance. | ||
| View original record | C O P Y. X 1782 To Wor. for EH. from R. R8/B6116. Copy to J. January 6th. 1916. Handwritten notes: <- 8116 (above 'for EH'), 1782 (top right corner) X.2125 Re Weston Instrument. X.1782 With reference… | ||
| Scan141 | Cover letter sending a copy of correspondence with the Weston Electrical Instrument Company regarding an electrical speedometer. | ||
| View original record | W.W. 238 A (200 H) (S.C. 316. To) Wor. for EH from R. x1782 c. to J. Mr Hives COPY R7/DB6416. April 6th 1916. RE ELECTRICAL SPEEDOMETER. Thank you for your report of March 29th with reference to the… | ||
| Scan142 | Follow-up letter to The Weston Electrical Instrument Co. regarding an overdue Weston Voltmeter for engine revolution indicators. | ||
| View original record | W.R. 225 A (300 M) (S.C. 21B. 21-1-16) G. 1476. RI/DB7416. COPY April 7th, 1916. The Weston Electrical Instrument Co., Audrey House, Ely Place, Holborn, London, E. C. Dear Sirs, You promised a long… | ||
| Scan143 | The construction of continuous current revolution indicators and experimentation with a vibrator type for the Admiralty. | ||
| View original record | R7/C13516. X.1782 May 13th, 1916. Mr Olley. Copies to J Wor for Mr Ellis. Mr Stent and H.H. 15/5/16 COPY [Crossed out: X 1888] Re Revolution Indicator. X.1782 The Admiralty have instructed us to… | ||
| Scan144 | Request to order a combined shunt from the Weston Electrical Instrument Company for car starter motor experiments. | ||
| View original record | X. 1782 EFC1/T41216. To O.O. from EFC. December 4th 1916 X. 2642 & X. 2656 etc. X.2065 CAR STARTER MOTOR EXPERIMENTS. X. 1782 X. 2642 In connection with the above experiments, we should be glad if you… | ||
| Scan145 | Notification of receipt for a combined Shunt and Milli-Voltmeter available at the Stores. | ||
| View original record | COPY. X1482 By/Mr Clark. 12.12.16. Wd/GEA44/W121216. X.2642. X.2656. 3035 - order 535. Please note, we have received 1 combined 15 ampere and 1.5 ampere Shunt for a Weston Standard Portable… | ||
| Scan146 | The dispatch of electrical instruments for adjustment and standardisation. | ||
| View original record | X1782 To O.O. from EFC. X.3025 EFC3/T8.dl.17. c. to D. for Mr. Roney. RE ELECTRICAL INSTRUMENTS. We are sending into the Stores for dispatch to the Weston Electrical Instrument Co., Audrey House, Ely… | ||
| Scan147 | Letter to the Weston Electrical Instrument Co. regarding the return of electrical testing equipment for examination. | ||
| View original record | X1482 Wd/W3/M101117. X.1782 10th. November 1917. The Weston Electrical Instrument Co., Audrey House, Ely Place, Holborn, London E.C.1. Dear Sirs, We are sending to you under separate cover one direct… | ||
| Scan148 | Instructions to despatch a Mill-Voltmeter with shunts and volt box to the Weston Electrical Instrument Co. for adjustment. | ||
| View original record | D. for Mr. Roney. 10.11.17. X1782 Wd/W2/E101117. We understand that the Experimental Dept. are sending into the Stores one Weston Mill-Voltmeter with shunt box. Also 150 ampere and 600 ampere shunts,… | ||
| Scan149 | Letter from Weston Electrical Instrument Company regarding the compatibility of a returned instrument with its shunts and resistance box. | ||
| View original record | Form 1.M. 2.16. X.3035. X.1782 Weston Electrical Instrument Company. TELEPHONE NO. 2029 HOLBORN. London Manager, A. DAVY, M.I.E.E. HEAD OFFICE & WORKS, WAVERLY PARK, NEWARK, N.J., U.S.A. TELEGRAPHIC &… | ||
| Scan150 | Letter to Weston Electrical Instrument Co. requesting adjustment of a millivoltmeter set for use as a standard of reference. | ||
| View original record | X.3035. X.1482 EFC/AT13.11.17 13.11.17. Messrs. Weston, Electrical Instrument Co., Audrey House, Eley Place, Holborn, London. E.C. X. 178 2 Dear Sirs, With reference to the Millivoltmeter Shunts and… | ||
| Scan151 | Letter from Weston Electrical Instrument Company regarding the adjustment of shunts and external resistance to an instrument. | ||
| View original record | FORM 126. 2-15 K3035 X1482 Weston Electrical Instrument Company RECEIVED NOV 1917 TELEPHONE Nº 2029 HOLBORN. London Manager: A. DAVY, M.I.E.E. HEAD OFFICE & WORKS, WAVERLY PARK, NEWARK, N.J., U.S.A.… | ||
| Scan152 | Sourcing a portable testing instrument for the Bijur Dynamo & Regulator. | ||
| View original record | X.1782 Extract from EFC5/T7.2.18. A.3231. - BIJUR DYNAMO & REGULATOR. X.2048. X.1782. As regards the testing set asked for by Mr. Royce in his memo R3/W17.1.18, we have made enquiries of Messrs.… | ||
| Scan153 | Letter from Weston Electrical Instrument Co. detailing specifications for a Milli-voltmeter, with handwritten calculations. | ||
| View original record | X.1702 LETTER RECEIVED FROM :- WESTON ELECTRICAL INSTRUMENT CO. HOLBORN. LONDON. E.C. Your ref. EFC3/t16.3.18. Dear Sirs, In reply to yours of the 16th inst. we beg to advise you that your Model 1… | ||
| Scan154 | Inquiry to The Weston Electrical Instrument Co. about the internal resistance of a milli-voltmeter. | ||
| View original record | X 1782 EFC3/T X.2065 X.1782. 16th March 1918. The Weston Electrical Instrument Co., Audrey House, Ely Place, Holborn, London E.C.1. X.1782. Weston instrument Dear Sirs, With reference to the Weston… | ||
| Scan155 | From Weston Electrical Instrument Co. regarding a Model 1 Milli-Voltmeter's full scale deflection current and resistance. | ||
| View original record | MEMORANDUM. V/1782 Form No L. 210-2-17. TELEPHONE: 2029 HOLBORN. TELEGRAMS: "PIVOTED-SMITH. LONDON." FROM Weston Electrical Instrument Co., AUDREY HOUSE, ELY PLACE, HOLBORN, LONDON, E.C. To Messrs.… | ||
| Scan156 | Suggestion from Mr. Royce to use a specific Delco-Weston type ammeter for the 40/50 HP Chassis. | ||
| View original record | R.R. 235 a (106 T) (S.F. 846. 6-8-19) G. 2460. X.1782. Extract from E2/G11.2.19 Ammeter for Chassis. X.1162? ٨ X.1782. Mr. Royce thinks we should use one of the Delco-Weston type ammeters reading… | ||
| Scan157 | Letter from Weston Electrical Instrument Company regarding a Model 1 milli-voltmeter's specifications. | ||
| View original record | X.1782 20th March/18. Your Ref: EFC3/T1613.18. Messrs. Rolls-Royce Ltd., Derby. X. /78 2 Dear Sirs, In reply to yours of the 16th inst., we beg to advise you that your Model 1 milli-voltmeter No.… | ||
| Scan158 | Requesting the purchase of a Weston combined ammeter and voltmeter for iron depositing work. | ||
| View original record | To O.O. from FFC. X.1782 EFC4/T20.2.19. 1782 X.3128 - RE ELECTRICAL INSTRUMENTS FOR IRON DEPOSITING WORK. X.3/28 X.2065 Will you kindly put on order from the Weston Electrical Instrument Co., one… | ||
| Scan159 | From Weston Electrical Instrument Co. regarding the forwarding of instrument catalogues. | ||
| View original record | MEMORANDUM. Weston Electrical Instrument Co., LTD. AUDREY HOUSE, ELY PLACE, HOLBORN, LONDON, E.C. 1. PHONE: HOLBORN 2029. TELEGRAMS: "PIVOTED-SMITH, LONDON." DIRECTORS EDWARD WESTON CAXTON BROWN J.… | ||
| Scan160 | Letter to The Weston Electrical Instrument Co. inquiring about a sample model ammeter. | ||
| View original record | X.1782. EFC1/AT. 28.3.19. The Weston Electrical Instrument Co., Audrey House, Eley Place, Holborn E.C.1. X.1162. Ammeter for Chassis X.1782. Dear Sirs, Re Sample Model Ammeter No.354. Further to our… | ||
| Scan161 | Order for eight Weston Ammeters for specific cars and production. | ||
| View original record | R.R. 235a (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. X1782 To O.O. from BY/HBO. [Struck through] C. to Mr. Hives. [STAMP: ROLLS-ROYCE LTD RECEIVED] BY/HBO3/DW.1/4/19. INSTRUMENT BOARD - SEC: 7190.… | ||
| Scan162 | Letter from Weston Electrical Instrument Company Ltd. providing a quote for ammeters. | ||
| View original record | X.1782 COPY, WESTON ELECTRICAL INSTRUMENT COMPANY LTD., Audrey House, Ely Place, Holborn, LONDON, E.C.1. April 1st. 1919. Messrs. Rolls-Royce Ltd., Nightingale Road, Derby. X.1162 Ammeter for Chassis… | ||
| Scan163 | Page two of a letter from Weston Electrical Instrument Company Ltd. regarding their models. | ||
| View original record | -2- Contd. it is impossible to find another instrument anywhere that will give the accurate and reliable service that may be obtained from either of these Models. we await the favour of your further… | ||
| Scan164 | Letter from Weston Electrical Instrument Co. regarding the supply of a Model 301 ammeter. | ||
| View original record | X.1782. WESTON ELECTRICAL INSTRUMENT CO., AUDREY HOUSE, ELY PLACE, HOLBORN, LONDON, E.C.1. 4th April, 1919. Messrs. Rolls-Royce Ltd., Nightingale Road, Derby. Ammeter for Chassis X.1162 ^ X.1782. Ref:… | ||
| Scan165 | Page 2 of a letter from Weston Electrical Instrument Company Ltd. regarding a battery testing instrument. | ||
| View original record | -2- Contd. is also provided it may be used for accurately determining the condition of the batteries. However, we consider the best recommendation for these instruments is an actual trial of them… | ||
| Scan166 | Receipt of an ammeter, felt washers, and clutch plates from various suppliers for experimentation. | ||
| View original record | X.1782. Mr Clark from Order Office. Wd/AW1/HP23419. 23rd April 1919. X. 1782 X 3362 Please note that we have received from the Western Electric Co Ltd., 1 model 269 Ammeter for experiment 3362. Also… | ||
| Scan167 | Lighting installation, discussing parts from the Weston Company and experiments with a Bijur dynamo. | ||
| View original record | S.S. 583A (100 T) (S.G. 648. 19-5-20) G. 9618 X.1782 To R. from EFC. c. CJ. EFC1/T25.4.19. X.3362 RE LIGHTING INSTALLATION ET W.W. We have received from the Weston Company one of their Model 269… | ||
| Scan168 | Requesting enquiries be sent out for an electrical instrument to measure condenser capacities. | ||
| View original record | To O.O. from EFC. X1782 EFC2/AT4.6.19. X.2512. X.975 X.1782. X.2434. RE ELECTRICAL INSTRUMENT FOR THE MEASUREMENT OF CONDENSER CAPACITIES. X.2512. X.2434. X.1782. Will you kindly send out enquiries to… | ||
| Scan169 | Quotation from Weston Electrical Instrument Company for electrical measuring instruments. | ||
| View original record | X. 1782 . X.1782 X.2434 WESTON ELECTRICAL INSTRUMENT COMPANY LTD, AUDREY HOUSE, ELY PLACE, HOLBORN, LONDON E.C.1. June 12th 1919. Messrs. Rolls-Royce Ltd., Nightingale Road, DERBY. Dear Sirs, X.2434… | ||
| Scan170 | Record of serial numbers for various Weston electrical measuring instruments and associated parts. | ||
| View original record | X 1782 Mr. Clark. 30.6.19. X 1782 RECORD OF NOS. OF WESTON INSTRUMENTS. X 2434 (1) Weston direct reading milli-voltmeter(?) Model I. No.22407. (2) Ditto. No.22596. (3) Weston Model 163. No.42 (Old box… | ||
| Scan171 | Notifying the receipt of a Weston Electric Co. model 370 Mil-ammeter for an experiment. | ||
| View original record | R.R. 235 a (200 T) (S.F. 103. 25-10-18) G. 2244. X.1782 To Mr. Clark. from O.O. Wd/Dnl/HP2719. 2nd. July 1919. X. 2434 X 178 2 Please note that we have received from the Weston Electric.Co., 1… | ||
| Scan172 | The specific instruments required for the production testing of electrical apparatus, namely condensers and ignition coils. | ||
| View original record | X.1782 To Hy. from EFC. c. to En. c. to Wcr. c. to Wd. EFC2/T1908.19. X 1627 PRODUCTION TESTING OF ELECTRICAL APPARATUS. X'975 X 1782 INSTRUMENTS REQUIRED. Kindly note the following are the… | ||
| Scan173 | List of instrument requirements for testing the main switch, starter motor, and dynamo. | ||
| View original record | Contd. -2- EFC2/T19.8.19. 3. MAIN SWITCH & ACTUATING BOX. For this purpose another instrument similar to the above described for coils, will be required. Also an Isenthal variable resistance of 2 1/2… | ||
| Scan174 | The despatch of a Weston volt-ammeter for re-adjustment. | ||
| View original record | To Shipping Office. c. to Despatch Stores. X.1782 EFC4/T26.8 19. X 1782 RE WESTON INSTRUMENT We are sending into the Despatch Stores, one Weston D.C. volt-ammeter. model 163 No.92. together with two… | ||
| Scan175 | Letter of complaint regarding a faulty volt-ammeter and a request for its re-adjustment. | ||
| View original record | c. to C.O. c. to Despatch Stores. X.1782 EFC3/T. 26th August 1919. The Weston Elec: Instrument Co., Audrey House, Ely Place, Holborn, London E.C.1. X.1782 Dear Sirs, We are having despatched to you,… | ||
| Scan176 | Request to purchase a Model 1 Weston Milli-voltmeter and various shunts to be used as a standardising set. | ||
| View original record | X.1782 To O.O. from EFC. c. to Bn. EFC1/T2.9.19. X.1782. RE STANDARD ELECTRICAL INSTRUMENTS. X.2067. Will you kindly order up for us a Model 1 Weston Milli-voltmeter with a 0 to 150 scale reading… | ||
| Scan177 | Requesting the urgent delivery and careful handling of a Standard Weston Instrument. | ||
| View original record | To O.O. from EFC. c. to Stores. X.1782 EFC1/T1.10.19. X.1782 - STANDARD WESTON INSTRUMENT Further to our EFC1/T2.9.19, we shall be obliged if you will urge delivery of this instrument, as we are badly… | ||
| Scan178 | The receipt of various electrical components and springs for experiments. | ||
| View original record | E.H. 2½m 29 T) (S.F. 674. 22.5.19) G. 2376. X. 1782 Mr. Clark. from O.O. Wd/Dn2/HP81119. 8th Nov. 1919. & X.3035. Please note that we have received from the General Electric Co., 1 coil of 18 SWG.… | ||
| Scan179 | Sending a Weston Milli-voltmeter for repair of its needle and suspension. | ||
| View original record | X 1782 To O.O. from EFC. c. to Shipping Office. c. to Despatch Stores. EFC6/T12.11.19. X 1782 RE WESTON MILLI-AMMETER We are sending into the Stores a Weston Model 1 Milli-voltmeter No.22596. We… | ||
| Scan180 | Request to order a Weston model 163 combined ammeter and voltmeter for the Experimental Department. | ||
| View original record | R.R. 225 e 1200 T. (S.P.674 22-3-19) G. 2376. To O.C. from Ck. c. to Stores. X.1782. Ck10/T2.1.20 X.1782 - RE WESTON INSTRUMENT FOR EXPL. DEPT. X.2065 Will you kindly put on order from the Weston… | ||
| Scan181 | List of required instruments for production testing and adjustment of lighting, starting, and ignition systems. | ||
| View original record | X.1782 10.1.20. X.1625 Production Test. INSTRUMENTS REQUIRED FOR PRODUCTION ADJUSTMENT OR TEST. X.975 X.1782 Instruments. Lighting. { Dynamo. Cut-out. Battery. }: 15 volts and 15 amperes. (combined)… | ||
| Scan182 | Request to order a portable D.C. volt ammeter for self-starter test tackle. | ||
| View original record | X.1782 To G.G. from Mr. Alvey. c. to Mr. Birks. c. to Mr. Brock. c. to EFC. EJJ3/EW27.1.20. X.1627 - RE SELF STARTER TEST TACKLE X.975 X.1782. Please order from the Weston Electrical Instrument Co.… | ||
| Scan183 | Letter from Weston Electrical Instrument Co. Ltd. concerning delays to orders for a Mil-Ammeter, Multiplier, and Testing Set. | ||
| View original record | X 1782 WESTON ELECTRICAL INSTRUMENT CO. LTD., Audrey House, Ely Place, Holborn. Your ref. Wd/Dnl6/HP-17.2.20. Our ref. FHD/WW. LONDON. E.C.1. Messrs. Rolls-Royce Ltd., 18th Feb. 1920. Nightingale… | ||
| Scan184 | Specifications and reading correction factors for box instruments 42 and 92. | ||
| View original record | X. 1782 19.2.20. To L. Furner) * R.C.S.Jamie) from EFC. X.1782 - RE BOX INSTRUMENTS 42 & 92. Instrument 42. 21 Instrument only. Terminal voltage for full scale deflection = .0181. (Scale… | ||
| Scan185 | Test and calibration data for Instrument 92, detailing voltage, amperage, resistance, and range correction values. | ||
| View original record | -2- Instrument 92. 31. Instrument only. Terminal voltage for full scale deflection = .02013 (Scale v. nearly proportional) Amperes for full scale deflection = .01270. Resistance = 1.585 . 32… | ||
| Scan186 | Page detailing deduction percentages for various volt and ampere range readings, with a note on instrument care. | ||
| View original record | -3- 36. 150 volt range. Reading Deduct. 0 - 50 Correct. 50 - 150 .7% 37. 1.5 ampere range. Reading. Deduct. 0 - .5 Correct. .5 - 1.5 .7% 38. 15 ampere range. Reading. Deduct. 0 - 3.5 Correct. 3.5 -… | ||
| Scan187 | Wiring diagram of connections for a Weston Box Instrument No. 92. | ||
| View original record | X. 1782 21/2/20 Instrument Resistance wound on magnet 1.5 1.5 VOLTS Throwover Switch AMPERES 600 150 + - Amps. + External Shunt X1482 Diagram of connections of Weston Box Instrument No 92 21/2/20.… | ||
| Scan188 | Note on the holving resistance ratio for Weston Instrument No. 92. | ||
| View original record | X.1782 22.3.20. X.1782 -- WESTON INSTRUMENT NO.92 X.2067. Holving resistance ratio for instrument No.92 on 15 volt range = 1.935. EFC. | ||
| Scan189 | Confirming the receipt of a Mil-Ammeter model 370 from The Weston Electrical Instrument Co. Ltd. | ||
| View original record | R R 235 n (50 T) (S.G. 264, 8-1-20) G. 258S. X.1782 Mr Clark. from O.O. Wd/Dn5/HP29320. 29th March. 1920. X. 1782. X 2434 Please note we have received from The Weston Electrical Instrument Co.Ltd., 1… | ||
| Scan190 | Receipt of various parts from external suppliers. | ||
| View original record | RR 235 a (200 T) (8 F) 674 22-5-19) G. 2376 X.1782 Mr Clark. from O.O. Wd/Dn2/HP22420. 22nd Apl.1920. (1) Handwritten note left margin: R.H.C. X.3550. Please note we have received from Messrs. A. Cort… | ||
| Scan191 | Table of results for halving resistance with a new box on a 15-volt range. | ||
| View original record | X.1782 20.5.20. X.2067 X.1782. EFC. Halving resistance with new box on 15 volt range. Volts. | Reading. | Constant. ---|---|--- 15.05 | 8.95 | 1680 13.45 | 8.00 | 1680 11.25 | 6.68 | 1682 8.95 | 5.31… | ||
| Scan192 | Internal instruction sheet requesting a specific type of box instrument. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 X.1782. 91020 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: S.T.C Date: 12/6/20 Customer's No.: FB 87. Re: X. 1782 Instruments We shall now require in this dept.… | ||
| Scan193 | Request to order a Weston box type combined ammeter and voltmeter for the Experimental Department. | ||
| View original record | To Wd/Ms. from EFC. c. Stores. X 1782. (handwritten) EFC1/T14.6.20. X.1782 - WESTON INSTRUMENT FOR EXPERIMENTAL DEPT. X 2065 (handwritten) We require, owing to further increase of staff, yet another… | ||
| Scan194 | Letter from Weston Electrical Instrument Co., Ltd. about their Model 280 Garage Testing Set. | ||
| View original record | INLAND.— PIVOTED, SMITH, LONDON. TELEGRAMS: FOREIGN.— PIVOTED, LONDON. CODES.— A.B.C. (4TH EDITION.) LIEBERS, MARCONI. X7782 TELEPHONE: HOLBORN 2029. WESTON ELECTRICAL INSTRUMENT CO., LTD. DIRECTORS:… | ||
| Scan195 | Order request for a Weston box type combined ammeter and voltmeter for the Experimental Department. | ||
| View original record | X 1782 c to Mr [REDACTED] Clarke (Experimental) EJJ5/EW.3.8.20. X 1782 Re Experimental Department. Please order for the above from the Weston Electric Co., 1. Weston box type combined ammeter and… | ||
| Scan196 | Sending a Weston box type instrument for re-adjustment and chasing an overdue order for another. | ||
| View original record | X.1782 To Shipping Office. c. Despatch Stores. c. C.O. c. WoF. c. Hy. EFC3/T10.B.20. RE WESTON BOX TYPE INSTRUMENT. We are sending to the Despatch Stores, one Weston D.C. box type combined ammeter and… | ||
| Scan197 | Instruction sheet regarding the receipt of a boxed instrument with external shunts from the stores. | ||
| View original record | RR.300 (120B) (SF 349 24-1-19) MP 200552 X.1782 91329 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To S. F. C. Date: 20/8/20# Order No. X.1782. Customer's No. TC. 5. Re X.1782. Instruments X.975 We have… | ||
| Scan198 | The return of a faulty Weston instrument for readjustment after a failed internal repair attempt. | ||
| View original record | To Shipping Office. c. Despatch Stores. c. Wd/Ms. X.1782 EFC9/T22.9.20. X.1782 - WESTON INSTRUMENT. We are sending into the Stores for return to Messrs. Weston, for readjustment, one of the new box… | ||
| Scan199 | Confirmation of receiving a repaired instrument from the Weston Instrument Co. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 X1782 91400 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To S.F.C Date 8/10/20 Order No. Customer's No. FC.74 Re X.1782. Instruments We have received from the Weston… | ||
| Scan200 | Specification sheet for an Electrical Experimental Department instrument, the Weston Standard Milli-Volt-Ammeter Model 1. | ||
| View original record | X.1782 1.12.20. X.975 - ELECTRICAL EXPERIMENTAL DEPARTMENT INSTRUMENTS. X.1782. TABLE HEADERS: Description. Number and connections. Volt ranges. Ampere ranges. Resistances. (ω). Remarks. TABLE… | ||
| Scan201 | Specification table for a Weston Model 1 Milli-Volt-ammeter, detailing connections, ranges, and resistances. | ||
| View original record | 05667 -2- Description.: Weston Milli-Volt-ammeter Model 1. Number and connections.: 22407 BLACK. Volt ranges.: .0741 Amperes ranges.: .0149 Resistances (Ω): 4.97 (at 18°C) Remarks: Instrument only.… | ||
| Scan202 | Specification table for a Weston Milli-Volt-Ammeter, Model 1. | ||
| View original record | -3- | Description. | Number and connections. | Volt ranges. | Ampere ranges. | Resistances (Ω) | Remarks. | |---|---|---|---|---|---| | Weston Milli-Volt-Ammeter. Model 1. | 22596 | .075 (at 18°C)… | ||
| Scan203 | Specification table for a Weston Box Instrument Model 163, detailing its electrical properties and connections. | ||
| View original record | -4- Description. Number and connections. Volt ranges. Ampere ranges. Resistances. (Ω) Remarks. 42 .0181 (at 15°C.) .0100 1.81 (at 15°C.) Instrument only. Weston Box. Instrument Model 163. .0181 (at… | ||
| Scan204 | Specification table and wiring diagram for a Weston Box Instrument Model 163. | ||
| View original record | -5- RR 518A 1500 1/35 (W.180/30) G268 Headers: Description. | Number and connections | Volt ranges. | Ampere ranges. | Resistances. (W) | Remarks. Row 1: Number and connections: 92 Volt ranges: .0197… | ||
| Scan205 | Specification table and wiring diagram for a Weston Box Instrument, Model 163. | ||
| View original record | -6- Description. | Number and connections | Volt ranges. | Ampere ranges. | Resistances. (ω). | Remarks. ---|---|---|---|---|--- Weston Box Instrument. Model 163. | 40 | .0168 (at 15°C.) | .00949 |… | ||
| Scan206 | Specification table and wiring diagram for a Weston Box Instrument, Model 163. | ||
| View original record | -7- | Description | Number and connection. | Volt ranges. | Ampere ranges. | Resistances. (ω) | Remarks. |… | ||
| Scan207 | Instructions for determining the milli-volts and milli-amperes for a Weston Electrical R.P.M. Counter. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 208552 X 1782 88291 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To EFE Order No. AA 46. Customer's No. 1 Re x. 1782. X. 975 Milli-volts & Milli-amperes of Weston Electrical… | ||
| Scan208 | Instructions and measurements for a Weston Voltmeter. | ||
| View original record | ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: EFC Order No: AB. 34 Customer's No.: Cell voltmeter. X. 1782 Weston Voltmeter, N° 28336. This instrument, taking the average of a number of readings, is found to… | ||
| Scan209 | Letter of inquiry to The Weston Electric Instrument Co. regarding a Model 375 Weston Galvanometer. | ||
| View original record | X 1782 EFC4/T. 1st. December, 1922. The Weston Elec. Instrument Co., Audrey House, Ely Place, Holborn, E.C.1. Dear Sirs, We thank you for your AD/EMR of the 23rd. ult., with reference to Portable… | ||
| Scan210 | Copy of a letter from Weston Electrical Instrument Co. Ltd. regarding a model 375 Galvanometer and its price. | ||
| View original record | X1782 COPY OF LETTER RECEIVED FROM:- WESTON ELECTRICAL INSTRUMENT CO. LTD., AUDREY HOUSE, ELY PLACE, HOLBORN, LONDON E.C.1. EFC4/T. FHD/CR. 2nd. Dec. 1922. Messrs. Rolls-Royce Ltd., Nightingale Road,… | ||
| Scan211 | Request to order a Weston Model 375 Galvanometer for insulation leakage tests. | ||
| View original record | X1782 To Wd/Ms. from EFC. EFC5/T8.12.22. X.1782 - RE WESTON GALVANOMETER FOR INSULATION LEAKAGE TESTS. Would you kindly order up from the Weston Elec. Instrument Company, one of their Model 375… | ||
| Scan212 | The despatch of a Weston Ammeter to its makers for repair. | ||
| View original record | X1782 BP. from Hs. c. to Chat. c. to Ms. Hs4/LG18.12.22. We are sending into the Stores for despatch to the Weston Elect: Instr: Co. 1 Weston Ammeter No.111134. Will you please have this despatched to… | ||
| Scan213 | Specifications for a Weston Galvanometer Model 375, No. 8985. | ||
| View original record | X.1782. 26.10.23. X.1782 - WESTON GALVANOMETER MODEL 375. No.8985. A deflection of one division on the scale of this instrument is produced by 32 micro-amperes. The full scale deflection of 30… | ||
| Scan214 | The overhaul of a Weston milli-voltmeter and the addition of a new shunt. | ||
| View original record | X.1782 To Wd. from EFC. EFC2/T8.1.24. X.1782 - WESTON INSTRUMENTS. We have a Weston direct reading milli-voltmeter Model 1, No.22596, which we wish to return, together with the shunts for various… | ||
| Scan215 | Instructions for the re-calibration of a cell voltmeter. | ||
| View original record | RR 300 (20 Bks.) (SK 354 5-12-22 MP 264049) X.1782 108581 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: E.F.B. Date: 21 - 2 - 1924 Order No. Customer's No. J.B.36. Re: Re calibration of cell voltmeter This… | ||
| Scan216 | Specifications for a Weston Galvanometer Model 375 and a Small Cell Testing Voltmeter. | ||
| View original record | X.1787 28.4.24. X.1782 - WESTON GALVANOMETER MODEL 375. NO.8985. A deflection of one division on the scale of this instrument is produced by 32 micro-amperes. The full scale deflection of 30 divisions… | ||
| Scan217 | Instruction sheet detailing the calculation for the resistance of a Weston Galvanometer. | ||
| View original record | RR 238 (150 BKS.) (SH57.29-6-20.) MP 224358 X. 1782 ROLLS-ROYCE LTD. INSTRUCTIONS. To E.Y.b. Order No. WA 25 Customer's No. X 1782 Resistance of Weston Galvanometer Reading in divisions on Galvo^n =… | ||
| Scan218 | Return of a Weston cell voltmeter to the makers for repair. | ||
| View original record | To Wd. from EFC. X1782 EFCL/T15.4.25. X.1782. WESTON CELL VOLTMETER We are sending you herewith 1 Weston cell voltmeter Model 267 No.28336. Will you kindly return this to the makers for repair. EFC. | ||
| Scan219 | Sending a Weston Millivoltmeter to the makers for a new needle and overhaul. | ||
| View original record | To D/BP. from EFC. c. Despatch Stores. c. Wd. X1782 EFC1/T29.4.25. X.1782. WESTON MILLIVOLTMETER. We are sending into the Stores a Weston millivoltmeter Model 1, No. 22407. Will you kindly have this… | ||
| Scan220 | Re-calibration of a Weston millivoltmeter and its associated volt box. | ||
| View original record | To D/BP. from EFC. c. Despatch Stores c/o Wd X1782 EFC3/T30.4.25. X.1782 - RE WESTON MILLIVOLTMETER With reference to our EFC1/T29.4.25 asking for Weston millivolt-ammeter No.22407 to be returned, it… | ||
| Scan221 | Return of a faulty Weston Cell Voltmeter to its makers due to a sticking needle. | ||
| View original record | To Ms/Dn. from EFC. 1782 EFC1/T26.5.25. RE WESTON CELL VOLTMETER. We are disappointed to find that the needle of this instrument still sticks, and therefore we think it should again be returned to the… | ||
| Scan222 | Record of resistance measurements for various ampere shunts of a Weston Instrument. | ||
| View original record | X 1782 X.1782. WESTON INSTRUMENT. 20.6.25. Resistance of the various ampere shunts for Instrument No. 22596. .15 ampere range. Reading on 22407 (millivolts) = 51.9 " " 22596 (milliamps.) = 103.6… | ||
| Scan223 | Specification sheet for Weston Instrument No. 336. | ||
| View original record | X1782 4.7.25. X.1782. WESTON INSTRUMENT N-.336. Milliamperes for full scale deflection = 11.1 Millivolts for full scale deflection = 56.6 Resistance = 5.10 ohms. Resistance for .2 v range = 18.1 ohms.… | ||
| Scan224 | Test report and specifications for a Bijur-Weston Instrument 23992. | ||
| View original record | X1782 16.10.25. BIJUR-WESTON INSTRUMENT 23992. (Mr. Chandler's) Milli-volts full scale 98.0 Milli-amps. " " 13.5 Resistance. 7.26 ohms. Reading practically identical either left or right, but needle… | ||
| Scan225 | Specifications for a Weston R.P.M. Indicator, instrument model 269, No. 336. | ||
| View original record | X1782 22.10.25. X.1782 - WESTON R.P.M. INDICATOR. X.1807 INSTRUMENT MODEL 269 . No. 336 Millivolts for full scale deflection 57.45 Milliamperes for full scale deflection 10.95 Hence resistance of… | ||
| Scan226 | Electrical characteristics for a Weston R.P.M. Indicator, Instrument Model 267. | ||
| View original record | X.178 2 5.4.26. X.1782 -WESTON R.P.M. INDICATOR. INSTRUMENT MODEL 267. No.37043. Millivolts for full scale deflection 506 Milliamperes for full scale deflection 14.3 Hence resistance of instrument =… | ||
| Scan227 | Requesting deflection temperature calibration for a whitemetal bearing and thermocouple arrangement. | ||
| View original record | To H1. Laboratory. From Hs/Rm. X1782 Hs/Rm6/LG27.9.26. X4633 We are sending in to you - 1 whitemetal bearing complete with thermo couple - and Weston Galvanometer. We are using this type of thermo… | ||
| Scan228 | Front cover of a brochure for the Weston Galvanometer, Model 375. | ||
| View original record | Form L.213-10-21. X1782 WESTON GALVANOMETER MODEL 375 WESTON ELECTRICAL INSTRUMENT CO., LTD., Audrey House, Ely Place, Holborn, E.C. 1. Telephone : Holborn 2029 [Text on gauge face] WESTON… | ||
| Scan229 | Product specification leaflet for the Weston Galvanometer, Model 375. | ||
| View original record | Weston Model 375 THE Weston Galvanometer, Model 375, has been specially designed to meet the demand for a Portable Galvanometer of great durability, reasonable sensitivity and moderate cost. The… | ||
| Scan230 | Order for a Weston Galvanometer Model 375. | ||
| View original record | To Wd/Ms. from Hs/Rm. L1782 Hs/Rml/LG7.10.26. Will you please order for us from :- The Weston Electrical Instrument Co., Audrey House, Ely Place, Holborn E.C.1. 1 Weston Galvanometer - Model 375.… | ||
| Scan231 | Faulty Weston Box Instrument No.42 which is being returned for overhaul. | ||
| View original record | X1782 To Wd. from EFC. EFC3/T14.12.26. WESTON BOX INSTRUMENT No.42. This instrument is now out of order, the movement being sluggish. We should be pleased if you would return this instrument to… | ||
| Scan232 | Description of the Cambridge Instrument Co's Recording Thermometer No. 27591. | ||
| View original record | EFC. AC.80. X/782 7.2.27. CAMBRIDGE INSTRUMENT CO'S RECORDING THERMOMETER NO. 27591. This instrument incorporates a clock mechanism with escapement gear, which drives a recording drum at either one… | ||
| Scan233 | Requesting repair and scale modification for a Weston voltmeter from revs per minute to milliamperes. | ||
| View original record | X.1782 To Wd. from EFC. EFC5/T16.3.27. We hand you herewith Weston voltmeter Model 267 No.37042, at present fitted with a revs.per minute scale. Would you kindly have this instrument sent away for… | ||
| Scan234 | Test and calibration data for a Weston A.C. Milliammeter No. 1068. | ||
| View original record | X/782 WESTON A.C. MILLIAMMETER NO.1068. Resistance of instrument at 16° C = 296 ohms. " " 300 V multiplier = 9710 " " " 300 V range = 10006 " " " 30 V multiplier = 717 " " " 30 V range = 1013 "… | ||
| Scan235 | Calibration data sheet for a Weston A.C. Milliammeter No. 1068. | ||
| View original record | X.1782 WESTON A.C. MILLIAMMETER NO.1068. Resistance at 16°C = 296.0 ohms. Reading. | M.A. Correction. (%) | True M.A. | D.C. Volts. | Ratio 50~volts reading. | 50~ Volts. | Impedance (ohms). 10 | -1.2… | ||
| Scan236 | Laboratory report on the calibration of a galvanometer and couple, showing temperature readings. | ||
| View original record | Hs/Rm. X1782 Hll/EA10.5.27. Laboratory. Report No.L818. Re Galvanometer and Couple brought in by you for calibration today. As requested we have tested the above as follows :- Galvanometer Reading.… | ||
| Scan237 | Requesting the return of a damaged Weston Cell Voltmeter to the makers for repair. | ||
| View original record | To ROY. from EFC. X/782 EFC2/T1.6.27. WESTON CELL VOLTMETER. Herewith we hand to you a Weston cell voltmeter Model 267, No.28336. Would you kindly have this returned to the makers for repair, as the… | ||
| Scan238 | Calibration data for a Weston Galvanometer No.8985 Model No.375. | ||
| View original record | X1782 Hs/Mr.Lovesay. H12/EA22.6.27. Laboratory. Report No.L883. Stamp: RECEIVED Hs JUN 23 1927 Calibration of Weston Galvanometer No.8985 Model No.375. Thermometer °C. Deflection in degrees. 250 20… | ||
| Scan239 | From Weston Electrical Instrument Co. regarding the repair of a Model 267 Voltmeter. | ||
| View original record | Form No. L.210-9-26 5000. TELEPHONE: HOLBORN 2029. TELEGRAMS: "PIVOTED-SMITH, LONDON" MEMORANDUM. FROM Weston Electrical Instrument Co., LTD. 15, Great Saffron Hill, LONDON, E.C.1. DIRECTORS DR.… | ||
| Scan240 | Calibration and resistance data for a Weston A.C. Milliammeter No. 1068. | ||
| View original record | Y1782 WESTON A.C. MILLIAMMETER NO.1068. Resistance of instrument at 16oC = 296 ohms. D.C. or A.C. resistance of 300 V multiplier = 9710 " " " " " " 300 V range = 10006 " D.C. resistance of 100 V… | ||
| Scan241 | Urgent internal request to obtain a Weston Galvanometer for experimental testing. | ||
| View original record | X782 To Roy. from EFC. EFC5/T30.9.27. WESTON GALVANOMETER. Will you kindly obtain from Messrs. The Weston Electric Instr. Co. Audrey House, Ely Place, Holborn, E.C.1.:- 1 Model 375 Weston… | ||
| Scan242 | Faulty Weston milliammeter and its return for repair. | ||
| View original record | To Roy. from EFC. X1782 EFC3/T7.10.27. WESTON MILLIAMMETER. Herewith we hand to you Weston milliammeter model 267, No. 37043. This instrument now fails to read, as if there is an open circuit in the… | ||
| Scan243 | Specifications for two Weston Galvanometer Model 375 instruments. | ||
| View original record | X1782 20.10.27. X.1782. WESTON GALVANOMETER MODEL 375. Instrument No.13740. A deflection of one division on the scale of this instrument is produced by 17.8 micro-amperes. The full scale deflection of… | ||
| Scan244 | The examination of a faulty Weston Dynamometer and suggestion for its repair. | ||
| View original record | X1782 To Hy/EJJ. from EFC. EFC4/T19.5.28. RE WESTON DYNAMOMETER TYPE A.C. INSTRUMENT HANDED TO US FOR CORRECTION. We have duly examined this, and find that the damping vane in the air damping system… | ||
| Scan245 | Issues with a Weston Milli-voltmeter and its return for re-calibration. | ||
| View original record | Roy. from EFC. c. Stores. X1782. EFC2/ADL.7.29. X.1782. WESTON MILLI-VOLTMETER NO.32901. We are sending into the Stores, 1 Weston Milli-voltmeter No.32901 together with portable shunt and leads. Seals… | ||
| Scan246 | Return of a Weston Milli-Voltmeter for re-calibration. | ||
| View original record | C/Att. c. to D/BP. c. to EFC. X1782 ROY/JT10/HP2.7.29. X.1782. WESTON MILLI-VOLTMETER NO.32901. Referring to yours EFC2/AD1.7.29 regarding slight adjustment to the above instrument. Herewith label… | ||
| Scan247 | Specification table for a Weston standard Milli-Volt-Ammeter, detailing its electrical properties and connections. | ||
| View original record | X1782. 13.6.29. X.975 - ELECTRICAL EXPERIMENTAL DEPARTMENT INSTRUMENTS. X.1782. Description. Number and connections. Volt ranges Ampere ranges Resistances. (Ω) Remarks. Weston standard… | ||
| Scan248 | Arranging the return of a faulty Weston Galvanometer for repair. | ||
| View original record | X1782. Roy. from EFC. EFC5/AD20.1.31. X.1782. WESTON GALVANOMETER. We are handing you herewith Weston galvanometer model 375 No. 15816 which has become faulty in use. Will you please arrange for its… | ||
| Scan249 | Required overhaul and repair of a damaged Weston Box Instrument Model 163 No. 98. | ||
| View original record | Roy/Ms. from Hs/Wst. c. G/Mt. c. D/BP. K1782 Hs/Wst.5/AMO.11.32. WESTON BOX INSTRUMENT MODEL 163 NO. 98 This instrument requires overhauling, repairing and re-adjusting due to the indicating needle… | ||
| Scan250 | Request to send a faulty Weston Instrument Model 163 No. 40 for overhaul and calibration. | ||
| View original record | 81782. Roy. From Hs/Wst. c. to G/MT. c. to D/BP. Hs/Wst.8/MA.18.5.33. WESTON INSTRUMENT MODEL 163. No.40. We are sending this instrument into the stores. Will you please arrange to despatch it to the… | ||
| Scan251 | Damaged Weston dynamometer instrument requiring overhaul and repair. | ||
| View original record | 81792 Roy. From Hs/Wst. c. to G/MT. c. to D/BP. Hs/Wst.7/MA.28.6.33. WESTON INSTRUMENT. We are sending into the stores a Weston Dynamometer pattern instrument model 370 No.1068. This instrument has… | ||