Rolls-Royce Archives
| Identifier | Entry | ||
| scan0001 | Supercharger options and the potential for building a new engine if current modifications are unsuccessful. | ||
| View original record | E. ) FROM R. HS. ) (At Le Canadel.) DA. ) R 2/M11.5.32. Rec'd & despatched from WW. 20.5.32. C. to SG. WOR. C. to RG. BY. BENSPORT SUPERCHARGER. Having reasonable hope of success of either the Roots… | ||
| scan0002 | Design delays on the 'Bensport' model due to changing the supercharger position. | ||
| View original record | x209. SG. WOR. } FROM DA/EV. DA/EV6/M29.6.32. C. to R. BY. HS. BENSPORT. We wish it to be appreciated that the recent desire to change the position of the supercharger and drive from the front of the… | ||
| scan0003 | Urgency of a blower and induction pipe experiment for Bensport. | ||
| View original record | Y209. To Hs. from E. E.1/HP.28.6.32. c. RHC. re Blower and Induction Pipe experiment for Bensport. R. is getting very impatient with regard to the blower experiments on the bed, to determine if we can… | ||
| scan0004 | Blueprint for a Bensport engine with a side blower drive. | ||
| View original record | X20A To. R. from E. c.c. Mr. Hs. Mr. Deasy. E.3/HP.2.7.32. re Bensport with Side Blower Drive. ----------------------------- We send you herewith a blueprint of showing a quarter scale arrangement of… | ||
| scan0005 | Options for a fan drive and blower on the Bensport project, comparing a Powerplus blower with a new design. | ||
| View original record | V 209 To R. from E. E.7/HP.13.8.32. c. Sg. Wor. Hs. Hy. Pa. re Bensport - Fan Drive and Blower. RECEIVED 15 AUG 1932 We have been over the question of the fan drive on Bensport, and there is no doubt… | ||
| scan0006 | Page 2 of a memo discussing a compromise design for a blower and its effect on the chassis layout. | ||
| View original record | - 2 - E.7/HP.13.8.32. ---------- of this blower, which is a compromise between the original short one we designed for the front drive, and the standard long one which Messrs. Powerplus do not wish us… | ||
| scan0007 | Proposing an experiment to fit a Peregrine chassis with a Powerplus blower for road testing. | ||
| View original record | X204 RECEIVED 1932 AUG 25 To R. from E. E.4/HP.13.8.32. c. Sr.Wor. Hs. Br. re Bensport. ---------- We think it would be a very useful experiment as soon as a spare Peregrine chassis is available to… | ||
| scan0008 | Design progress on the Bensport engine, supercharger, and fan drive, including challenges with the blower length. | ||
| View original record | X 209. To R. from E. c. Sg. Wer. Hs. By. Da. Hsy. E.H/HP.15.8.32. Bensport Progress - R.1/M.13.8.32. We are working hard to let you have as soon as possible a complete drawing of the Bensport engine,… | ||
| scan0009 | Mr Eyston's opinion on the possibility of engine boiling if the fan is removed. | ||
| View original record | - 2 - E.8/HP.15.8.32. As regards doing away with the fan altogether, Mr Eyston, who has had much experience with sporting and racing cars is of the opinion that boiling might be experienced… | ||
| scan0010 | Use of a flat endless belt for the Bensport fan drive and blower. | ||
| View original record | To R. from E. c.c. Sg. Wor. Hs. By. De. re Bensport - Fan Drive and Blower. Further to our memo E.7/HP.13.8.32, we omitted to mention the idea of using a flat endless belt. This would go into the… | ||
| scan0011 | Body options and modifications for a Bensport (Bentley 'B') chassis. | ||
| View original record | TO E. FROM EV. X209 RECEIVED RE BENSPORT. ('BENTLEY "B"') Amongst other drawings which "R" has sent over to me in connection with Bensport is your Le.C.3I6I. shewing a blower between the front horns… | ||
| scan0012 | Supercharger and chassis specifications for the Bensport model. | ||
| View original record | HS. E. } FROM R. BY. } R3/M20.8.32. C. to SG. WOR. PN. DA. BENSPORT CHASSIS. When writing our memo. last week naturally we were not aware of any changes being made to the supercharger. I am very… | ||
| scan0013 | Repositioning of the steering column and improvements to control springs on the 25 HP and Peregrine models. | ||
| View original record | -2- Owing to the engine and steering box going a few inches more forward it has enabled the steering column to be raised out of the way of the feet, and so permits the pedals being more nearly… | ||
| scan0014 | Letter discussing a blueprint for mounting a Bensport blower and its effect on the radiator and starting handle. | ||
| View original record | x 204. To EH. from E. c.c. Wg. Wor. Hs. Hy. re Bensport. We send you herewith a blueprint of LeC.3167 showing the Bensport blower and mounting on the crankcase. This scheme is not completed, as you… | ||
| scan0015 | Technical notes regarding a Powerplus blower for a Bensport car, covering delivery, specifications, and modifications. | ||
| View original record | ALN x209. To R. from E. E.6/HP.24.8.32. c. Sg. Wor. Hs. By. re Blower for Bensport. The following notes refer to two recent visits we have had from Mr.G.E.T. Eyston, of Messrs. Powerplus with regard… | ||
| scan0016 | Design notes on a blower, covering oil accumulation, fuel-oil mixing, and carburetor modifications. | ||
| View original record | (2) E.6/HP. 24.8.32. disposing the masses of the blades relative to the coupling. In connection with the design of the blower Mr. Eyston mentioned that it was desirable to limit the amount of oil… | ||
| scan0017 | The power testing and modification of a No.10 blower from Messrs. Powerplus. | ||
| View original record | (3) E.6/HP.24.8.32. of air should be directed on the blower casing. It was also agreed that we should repeat the power test with the second No.10. blower to confirm, or otherwise, the induction… | ||
| scan0018 | The mounting and drive for a Bensport blower on the crankcase. | ||
| View original record | To R. from H. c. Sg. Wer. Hs. By. X 209. E.9/HP.24.8.32. re Bensport blower, mounting and drive. Please find herewith a print of LeC.3167 showing the proposed mounting and drive for the blower on the… | ||
| scan0019 | Design document detailing a special Bibby-type spring coupling for a blower. | ||
| View original record | (2) E.9/HP.24.8.32. Bibby type in accordance with your wishes, but the design is quite special to the requirements of the scheme. Owing to the restrictions as regards length and diameter, we are using… | ||
| scan0020 | Technical memorandum detailing the design and lubrication of a blower and crankshaft coupling. | ||
| View original record | (3) E.9/HP.24.8.32. the blower and the crankshaft, and crankshaft movement, due to temperature difference effects is catered for by a certain amount of end float in the coupling, or by sliding on the… | ||
| scan0021 | Progress and challenges of supercharging the Peregrine engine for the Bensport car. | ||
| View original record | To Wor. From Hs. 'BENSPORT' The only work which has been done on Bensport is the running of the Peregrine engine supercharged. This running has shewn that the Peregrine engine will run fast and will… | ||
| scan0022 | Completed design of a 2250 cc Bensport Blower, comparing it with a standard No.10 blower. | ||
| View original record | N 201 To R. from E. c. Sg. Eor. Hs. By. re Bensport Blower. -------------------- Please find herewith a print of LeC.3196 showing completed design for the above. This blower as has previously been… | ||
| scan0023 | The merits and integration of a Roots-type blower, comparing it to other designs and considering modifications. | ||
| View original record | - 2 - E.6/HP.23.9.32. pipe is about 1.4 to 1 by volume corresponding to 7 or 8 lbs above atmosphere. We shall be in a position to vary the degree of blower compression without unduly interfering with… | ||
| scan0024 | Design modifications and the fitting of a shortened Bensport Blower, referencing drawing LeC.3228. | ||
| View original record | X204 To Da. from E. E.4/HP.4.10.32. C. R. Sg. Wor. Hs. By. re Bensport Blower. We send you herewith a print of LeC.3228 showing the shortened blower in conjunction with the longer engine, from which… | ||
| scan0025 | Delays and modifications to the Bensport and Peregrine engines, specifically regarding engine length and low-speed torque. | ||
| View original record | E. ) FROM R. HS. ) X-809. R1/M4.10.32. C. to SG. WOR. BY. DA. BENSPORT ENGINE. I have agreed to lengthening the engine as E. says it will not only help the cylinder block, but will help the head. This… | ||
| scan0026 | The slow progress of the Bensport engine supercharger project and the consideration of a new supplier. | ||
| View original record | X 204 X 4550 E. } FROM R. HS. } R2/M4.10.32. C. to SG. WOR. BY. BENSPORT ENGINE - SUPERCHARGER. It will be remembered that nearly 12 months ago we set out with the engine fitted with supercharger in… | ||
| scan0027 | Lubrication of a supercharged engine (blower), referencing a Bugatti design. | ||
| View original record | S/W HS To E. From Wg. Copy to Mr. Hs. re Bensport. X204 You will see that in Hs.1/MA30.9.32 he says it is essential to have oil in the petrol with a blower and he gives all the disadvantages thereof,… | ||
| scan0028 | Necessity of adding oil to petrol for supercharger lubrication on the 'Bensport' model. | ||
| View original record | X 209.. To Sg. from E. E.2/HP.6.10.32. c. Wer. Hs. re Bensport. In reply to Sg.18/E.5.10.32, this question of oil in the petrol is a very nebulous one, and the blower is such an unknown quantity at… | ||
| scan0029 | Need for an additional test bench to expedite work on the supercharged Bensport engine. | ||
| View original record | X209 To Wor. From Hs. c. to EJJ. c. to R. BENSPORT ENGINE. It will be seen from R's. memo R.2/M4.10.32 that he does not consider we are getting on quickly enough with the tests on the supercharged… | ||
| scan0030 | The development and testing of superchargers for the Bentsport engine. | ||
| View original record | 20A. To R. From Hs. c. to Sg. Wr. c. to E. Da. c. to Hy. Hdy. BENTSPORT ENGINE SUPERCHARGER. Replying to R.2/W4.10.32. We have got one man Re/Aln. who is concentrating on supercharger work. The… | ||
| scan0031 | Design and modification of Powerplus and Rootes type superchargers. | ||
| View original record | X209 To R. from E. E.6/HP. 7.10.32. c. Sg. Wor. Hs. By. re Bensport Supercharger. Referring to your memo R.2/M.4.10.32, we sent a print of the modifications to the Powerplus blower for the reduced… | ||
| scan0032 | Modifications and test failures of a Bensport/Powerplus blower. | ||
| View original record | X 209 To H. from E. c. Sg. Wor. Hs. By. Da. E.7/HP.12.10.32. re Bensport Blower. Further to our drawing showing outline of modified Powerplus blower, we now attach print of LeC.3239 showing modified… | ||
| scan0033 | Blower balance and bearing load calculations in relation to 'Bensport' and print LeC.3234. | ||
| View original record | X 209. To R. from E. C. Sg. Wor. Hs. By. E.3/HP.14.10.32. re Bensport. Herewith please find print of LeC.3234, showing calculations for balance, and bearing loads of smaller blower, which we meant to… | ||
| scan0034 | Reliability and performance of various superchargers, including Bensport, Powerplus, and Rootes types. | ||
| View original record | E. HS. } FROM R. BY. } X204 R2/M17.10.32. C. to SG. WOR. RG. DA. BENSPORT BLOWER. X4550 The question of the Bensport blower seems to be very serious. Firstly, the Powerplus now seems a waste of time.… | ||
| scan0035 | Page regarding the requirement for a drawing of a Roots type blower for a Bensport engine. | ||
| View original record | (2) I may add that we shall not be happy at WW. until we see a drawing of the Roots type blower, with the Bensport engine, which is the one we require, and also to hear that you are making some very… | ||
| scan0036 | Design modifications for a Roots-type Bensport blower, including rotors and gearing. | ||
| View original record | 8204 To R. from E. E.6/HP.27.10.32. ----------------- c. Sg. Wer. Hs. By. re Bensport Blower - Roots type. ---------------------------------- In reply to your memo R.3/M24.10.32 concerning the design… | ||
| scan0037 | The despatch of a No.10 Powerplus Blower for free repair. | ||
| View original record | X 209. To G/Mt. from Hs/Rn. c. C.O. c. D/BP. Hs/Rn.12/KT. 23.6.33. We are sending into the stores for despatch to Mr. G.E.T. Eyston, Superchargers Ltd., 329 High Holborn, W.C.1., one No.10 Powerplus… | ||
| scan0038 | Providing the delivery address for a supercharger to Superchargers Limited for Mr G.E.T. Eyston. | ||
| View original record | To Hs/Rm. from E. [Handwritten in blue ink] Rm [Handwritten in pencil] x209 E.8/HP.23.6.33. The address to which the supercharger should be sent is: Messrs. Superchargers Limited., 329, High Holborn,… | ||
| scan0039 | Updated instructions and fuel recommendations for Powerplus Superchargers. | ||
| View original record | r209 To Hs. from E. E.5/HP.3.7.33. re Powerplus Superchargers. We are sending you separately a letter from Messrs. Powerplus of the 1st inst. showing copies of their latest addition of fitting and… | ||
| scan0040 | Powerplus supercharger dispatched to Superchargers Ltd and plans for its future use in experiments. | ||
| View original record | y 209. To E. from Hs/Rm. Hs/Rm.4/KT.7.6.33. POWERPLUS SUPERCHARGERS. With reference to E.5/HP.3.7.33., we have not received acknowledgement of the blower which was despatched to Superchargers Ltd. We… | ||
| scan0041 | Letter to Superchargers Limited regarding the return of a Powerplus Supercharger for fitting with new pumps. | ||
| View original record | Copy to Hs. 8209. E.12/HP. 26th July 1933. Messrs. Superchargers Limited., 329, High Holborn, LONDON.W.C.1. Dear Sirs, Replying to your letter of the 14th inst. we are returning to your Works one… | ||
| scan0042 | The parts and modifications required to supercharge a Bentley chassis with a Powerplus Blower. | ||
| View original record | RHC/HPS. x209 Hs/Mths.10/KW2.1.34. Supercharging Bentley. ---------- We wish to fit a Powerplus Blower (similar to the one used on Peregrine) to Bentley Chassis. For this we shall want several parts… | ||
| scan0043 | Note confirming instructions to modify a B-4 unit crankshaft to fit a Powerplus Supercharger on a Bentley. | ||
| View original record | RHC. X909 Hs/Mths.8/KW.24.4.34. SUPERCHARGER ON BENTLEY. This note is to confirm our verbal instructions of the other day re modifying the crankshaft of B-4 unit, at present in shop, dismantled, in… | ||
| scan0044 | Urgent request to Mr. Bradley for a wooden model of a supercharger to HR. 86. | ||
| View original record | Mr. Bradley. x209 Hs/Smth.27/KW.16.5.34. Wooden Model of Supercharger. Will you please make us a wooden model to HR. 86. Since we are requiring this urgently, we should be glad if you could let us… | ||
| scan0045 | Letter from Superchargers Limited regarding the supply of a Powerplus Supercharger for experimental use. | ||
| View original record | DIRECTORS F. G. SCHREIBER CHAS. MCNEIL G. E. T. EYSTON SUPERCHARGERS LIMITED SPECIALISTS IN BLOWERS & AIR COMPRESSORS BRITISH CONCESSIONAIRES POWERPLUS AUTOMOBILE BLOWER Registered Office: 160,… | ||
| scan0046 | Letter to Powerplus Superchargers Ltd. regarding the experimental exchange of a No. 10 for a No. 11 blower. | ||
| View original record | 209 Exptl. Dept. Hs/Rm.10/KW. 18th May, 1934. Messrs. Powerplus Superchargers Ltd., 160, Piccadilly, London, W.1. Dear Sirs, Thank you for your letter of the 16th May. We shall only be using this… | ||
| scan0047 | Letter from Superchargers Limited declining a request to exchange a No. 10 for a No. 11 blower. | ||
| View original record | x 209 DIRECTORS F. G. SCHREIBER CHAS. McNEIL G. E. T. EYSTON SUPERCHARGERS LIMITED Specialists in Blowers & Air Compressors BRITISH CONCESSIONAIRES POWERPLUS AUTOMOBILE BLOWER Registered Office: 160,… | ||
| scan0048 | Request to arrange for a spare set of higher ratio worm gears for a Supercharged Bentley. | ||
| View original record | x209 To RHC. Hs/Smth.18/KW.6.6.34. Supercharged Bentley. In view of the somewhat uncertain performance of the Graham Supercharger we wish to have a spare set of worm gears of higher ratio, in case we… | ||
| scan0049 | Requesting an additional Graham-Paige supercharger unit for parallel testing. | ||
| View original record | To Roy/Ms. from RHC. c Wors (Struck through) RHC.1/BE19.6.34. BENTLEY - O/54107 With reference to the above, certain experiments are going forward in connection with the Graham-Paige Supercharger, and… | ||
| scan0050 | Arranging the purchase of a blower from Grahams for approximately £20. | ||
| View original record | x209 To Wor. Hs/Rm.21/KW. 21.6.34. With reference to RHC.1/BE.19.6.34. We think that the best way to obtain this blower is to write direct to Mr. Kishline, Assistant Chief Engineer of Grahams, and ask… | ||
| scan0051 | Letter from Harrison Radiator Corporation requesting pamphlets on super-chargers from Mr. Laurence Pomeroy, Jr. | ||
| View original record | HARRISON RADIATOR CORPORATION LOCKPORT, NEW YORK June 19, 1934 Mr. W. A. Rowbotham Rolls Royce Ltd. Derby, Derbyshire England Dear Mr. Rowbotham: For some time have been endeavoring to get from Mr.… | ||
| scan0052 | Letter to Laurence Pomeroy Jr. recommending collaboration with an American expert on radiators and cooling systems. | ||
| View original record | 4550 Exptl. Dept. Hs/Rm.7/KW. 3rd July, 1934. Laurence Pomeroy Esq., Jr., Messrs. McEvoy Ltd., Leaper Street, Derby. Dear Mr. Pomeroy, Enclosed is a letter from Mr. L.P. Saunders, the Director of the… | ||
| scan0053 | Letter from M. A. McEvoy (London) Ltd. regarding a mailing list for technical notes. | ||
| View original record | ON AIR MINISTRY LIST. DIRECTORS: M. A. McEVOY, A.M.I.A.E. M. A. S. McEVOY. H. LAIRD. L. E. W. POMEROY. LONDON DEPOT: 146, HIGH STREET, NOTTING HILL GATE, LONDON, W.11. (PARK 5438). M. A. McEVOY… | ||
| scan0054 | Letter to The Harrison Radiator Corporation regarding radiator core thickness specifications and a blueprint. | ||
| View original record | X4550 Exptl. Dept. Ha/Rm.16/KW. 9th July, 1934. L.P. Saunders, Esq., The Harrison Radiator Corporation, Lockport, NEW YORK, U.S.A. Dear Mr. Saunders, Attached is a copy of a letter we have had from… | ||
| scan0055 | Potential purchase of a second Graham Blower (supercharger) for a Bentley. | ||
| View original record | To Wor. C. to Sg. +209 Hs/Rm.S/KW.20.7.34. Graham Supercharger. You will remember that we were considering buying a second Graham Blower so that it could be fitted to the Bentley without mutilating… | ||
| scan0056 | Request to build and fit a Graham supercharger, distributor head, and dynamo. | ||
| View original record | To RHC. X209 HS/FD.7/KW.18.7.34. Will you please have the Graham Supercharger built up and fitted, also the distributor head and dynamo. These parts have been dismantled for inspection by the Exptl.… | ||
| scan0057 | Letter from Graham-Paige Motors Corporation confirming the dispatch of a blower unit free of charge. | ||
| View original record | COPY. GRAHAM-PAIGE MOTORS CORPORATION, DETROIT, MICHIGAN. 9th July, 1934. Mr. W.A. Robotham, c/o. Rolls-Royce Ltd., Derby, England. Dear Mr. Robotham, Replying to your letter of June 21, I am pleased… | ||
| scan0058 | The Graham Car Supercharger. | ||
| View original record | EXPERIMENTAL DEPARTMENT REPORT. X4550. REFERENCE :- Ha/Aln.1/WJ.23.7.34. Subject of Report:- Graham Car Supercharger. G. Fairyl Lee General Conclusions :- The blower is well designed on a basis of low… | ||
| scan0059 | Description and test results for a Graham Car Supercharger. | ||
| View original record | Hs/Aln.1/WJ.23.7.34. GRAHAM CAR SUPERCHARGER. DESCRIPTION. This blower is of the centrifugal type comprising a rotor 7.5" in diameter having twelve blades and mounted on a vertical shaft. This is… | ||
| scan0060 | Continued analysis of blower and supercharger performance characteristics, including boost, efficiencies, and engine power. | ||
| View original record | -2- Hs/Aln.1/WJ.23.7.34. Cont'd. The curves attached show the features which would be expected in the absence of a diffuser, namely, no fall of pressure as the delivery is progressively reduced and a… | ||
| scan0061 | Report page detailing the effects of removing the carburetter and an easing joint washer on blower performance, with comments on running. | ||
| View original record | -3- Hs/Aln.1/WJ.25.7.34. Cont'd. it all of which would improve the ratio of supercharged to unsupercharged horse-power. Sheet 5 shews the effect of removing the carburetter and the easing joint washer… | ||
| scan0062 | General conclusion and a table of leading particulars for a Graham blower. | ||
| View original record | -4- Hs/Aln.1/WJ.23.7.34. Cont'd. at the eye of the casing was seen to be rotating under the drag of the entering air. This is interesting as showing that the air begins to rotate before actually… | ||
| scan0063 | Performance characteristic graph for a Graham Car Supercharger with carburetter, less air cleaner, using petrol at 3000 engine RPM. | ||
| View original record | SHEET 6 GRAHAM CAR SUPERCHARGER WITH CARBURETTER LESS AIR CLEANER CHARACTERISTICS WITH PETROL AT 3000 ENGINE R.P.M. TEST DATE: 18-6-34 BAR: 29.98 AIR TEMP: 30°C ROTOR R.P.M: 17,300 ROTOR TIP SPEED:… | ||
| scan0064 | Performance characteristics graph for a Graham Car Supercharger at 1000 engine RPM. | ||
| View original record | SHEET 1 GRAHAM CAR SUPERCHARGER WITH CARBURETTER LESS AIR CLEANER CHARACTERISTICS WITH DRY AIR AT 1000 ENGINE R.P.M. CORRECTED TO :- STD BAR: 29.92 STD TEMP: 15°C TEST DATE: 15-6-34 ROTOR R.P.M. 5760… | ||
| scan0065 | Performance characteristic graph for a Graham Car Supercharger at 2000 Engine RPM. | ||
| View original record | SHEET 2 GRAHAM CAR SUPERCHARGER WITH CARBURETTER LESS AIR CLEANER CHARACTERISTICS WITH DRY AIR AT 2000 ENGINE R.P.M CORRECTED TO :- STD. BAR: 29.92 STD. TEMP: 15°C TEST DATE: 15-6-34 ROTOR R.P.M:… | ||
| scan0066 | Performance characteristics graph for a Graham Car Supercharger with carburetter and without an air cleaner. | ||
| View original record | SHEET 3. GRAHAM CAR SUPERCHARGER WITH CARBURETTER LESS AIR CLEANER CHARACTERISTICS WITH DRY AIR AT 3000 ENGINE R.P.M. CORRECTED TO STD BAR 29.92 STD TEMP 15°C TEST DATE: 16-6-34 ROTOR R.P.M. 17,300… | ||
| scan0067 | Performance characteristics graph for a Graham car supercharger with carburetter less air cleaner at 3500 engine RPM. | ||
| View original record | SHEET 4 GRAHAM CAR SUPERCHARGER WITH CARBURETTER LESS AIR CLEANER CHARACTERISTICS WITH DRY AIR AT 3500 ENGINE R.P.M. CORRECTED TO STD BAR 29.92 STD TEMP 15°C TEST DATE: 18-6-34 ROTOR R.P.M. 20,200… | ||
| scan0068 | Performance characteristics graph for a Graham Car Supercharger at 3000 engine RPM. | ||
| View original record | SHEET 5 GRAHAM CAR SUPERCHARGER COMPARATIVE CHARACTERISTICS WITH DRY AIR AT 3000 ENGINE R.P.M. CORRECTED TO:- STD. BAR. 29.92 STD. TEMP 15°C TEST DATE: 18-6-34 ROTOR R.P.M. 17,300 ROTOR TIP SPEED… | ||
| scan0069 | Letter concerning the supply of a supercharger and an issue with engine detonation. | ||
| View original record | x209 Exptl. Dept. Hs/Rm.16/KW. 30th July, 1934. Messrs. Cleverlys Limited, 12, Berkeley Street, LONDON, W.1. Dear Sirs, We thank you for your letter of the 28th July. You will note from the attached… | ||
| scan0070 | Letter from Laycock Engineering Co regarding the supply of Layrub Patented Couplings. | ||
| View original record | x209 LAYRUB - LAYMECH - PROPELLOR SHAFTS. TELEGRAMS: "INVENTION, SHEFFIELD" TELEPHONE: 70041-70042-70043 SHEFFIELD LAYCOCK ENGINEERING CO PROPRIETORS THOS W. WARD LTD. MOTOR COMPONENTS VICTORIA WORKS… | ||
| scan0071 | Advice note for the despatch of two Layrub patented couplings from Laycock Engineering Co. | ||
| View original record | Telephone: 70041 & 70042. Telegrams: "Invention, Sheffield." ADVICE NOTE 2209 No. 3437 LAYCOCK ENGINEERING Co. VICTORIA WORKS, (THOS. W. WARD, LTD., Proprietors), MILLHOUSES, SHEFFIELD, 8. To:… | ||
| scan0072 | Letter from Laycock Engineering Co. regarding the supply of Layrub Couplings. | ||
| View original record | LAYRUB - LAYMECH - PROPELLOR SHAFTS. TELEGRAMS: 'INVENTION, SHEFFIELD' TELEPHONE: 70041-70042-70043 SHEFFIELD LAYCOCK ENGINEERING CO PROPRIETORS THOS W. WARD LTD. MOTOR COMPONENTS VICTORIA WORKS… | ||
| scan0073 | Letter to The Laycock Engineering Co. confirming a design modification for couplings. | ||
| View original record | x209 Exptl. Dept: Hs/Smth.2/KW. 3rd November,1934. The Laycock Engineering Co., Victoria Works, Millhouses, Sheffield, 8. Your Ref: HAM.18. Dear Sirs, We are in receipt of your letter of the 1st… | ||
| scan0074 | Requesting a duralumin rotor for a Graham Supercharger due to high-speed testing concerns. | ||
| View original record | x209 To RHC. Hs/Rm.17/KW.12.11.34. We are going to run the Graham Supercharger at considerably higher speeds than those used on the car. We are rather afraid the rotor will burst. Will you therefore… | ||
| scan0075 | Modifications to a duralumin impeller for a car supercharger to reduce clearance. | ||
| View original record | +209 To RHC. Hs/Smth.25/KW.15.11.34. Dural Impellor for Car Supercharger. There appears to be considerable clearance between the impellor and the casing in the Graham Supercharger. This is an… | ||
| scan0076 | Requesting the creation of parts for an auto boost control system for a Bentley. | ||
| View original record | To RHC. +209 Hs/Smth.1/KW.16.11.34. Auto Boost Control - Bentley. We wish to rig up a simple control to limit the max. boost pressure, and propose the system given on Hs.1615 attached. Will you please… | ||
| scan0077 | Experiments and durability testing of a Graham supercharger on a Bentley. | ||
| View original record | To Sg. from Hs/Rn. c. to Wor. c. to E. c. to By. c. to Hn. x209* Supercharger on the Bentley. We have now been running the Graham supercharger on the test bed for some little time. The main object of… | ||
| scan0078 | Requesting a modification to the pipe on a Supercharged Unit B-12 to improve slow running. | ||
| View original record | +209 To RHC. Hs/Smth.10/KW.7.12.34. Supercharged Unit B-12. We want to try the effect on slow running of eliminating the horizontal bend in the pipe between the blower and the induction manifold. This… | ||
| scan0079 | Blueprint drawing of an induction pipe for a supercharged Bentley. | ||
| View original record | Hs 1643 JACKET ALONG STRAIGHT ROLLS-ROYCE, LTD PRINT ROOM 7 DEC 1934 DERBY INDUCTION PIPE — S/CH D BENTLEY H W Smith 7.XII 34 | ||
| scan0080 | Design of a supercharger for a Bentley engine, referencing print Hs.1642. | ||
| View original record | x209 To Hs/Rm. From Hs/Aln. to Hs/Hl. Suther Hs/Aln.3/MJ.8.12.34. BENTLEY SUPERCHARGER. We attach a print of Hs.1642 giving the leading dimensions for a blower suitable for the Bentley engine. In… | ||
| scan0081 | Blueprint of the leading dimensions for a Bentley supercharger. | ||
| View original record | SUPERCHARGER FOR BENTLEY (LEADING DIMENSIONS) TO DELIVER 25 LBS. OF AIR PER MIN + FUEL AT 12" HG. BOOST AT 6.25 x 4000 R.P.M. (2.0 CARB DEPN) ALTIVE. FOR COUNTER-CLOCK ROTATION. 16 BLADES EQUALLY… | ||
| scan0082 | Requesting an examination of a Graham Blower after 10,000 miles and discussing an order for new gears. | ||
| View original record | L209 To RHC. Hs/Rm.11/KW.12.12.34. Graham Blower. We have now completed 10,000 miles on this blower. Will you please strip for examination and also estimate as far as possible how much wear has taken… | ||
| scan0083 | Three alternative schemes for positioning a B-12 supercharged unit. | ||
| View original record | To RHC. +209 Hs/Smth.3/KW.13.12.34. Supercharged Unit - B-12. We are not satisfied with the slow running of this unit and wish to try the effect of placing the blower at a lower level than the… | ||
| scan0084 | Replacement of 'Layrub' couplings with Hardy couplings to reduce gear drive noise on Supercharged Unit B-12. | ||
| View original record | To RHC. x204 Hs/Smth.16/KW.13.12.34. Supercharged Unit - B-12. The gear drive to this unit is still very noisy at low speeds and we think that this can be improved by increasing the flexibility of the… | ||
| scan0085 | Troubles with gear noise and slow running on a supercharged Bentley. | ||
| View original record | x209 To RHC. Hs/Rm.22/KW.13.12.34. Supercharging on the Bentley. We have been able to do very useful work on the existing set up on the Bentley. The outstanding troubles which we are having to work on… | ||
| scan0086 | Blueprint for a high-power Straight '8' engine for a Bentley chassis, focusing on supercharger induction systems. | ||
| View original record | x209 To Hs. from E. E.3/HP.15.12.34. re Bentley Supercharger. We send you herewith a blueprint of the rough scheme we have in view for the high power head on a Straight '8' engine for the Bentley… | ||
| scan0087 | Expressing urgency to complete supercharger tests before the arrival of Spectre and Wraith engines. | ||
| View original record | -2- Hs/Rm.22/KW.13.12.34. We are most anxious to complete these supercharger tests before we get a lot of Spectre and Wraith engines about, as otherwise we shall not have time to give to the job. We… | ||
| scan0088 | Trialling a Buick hot spot on the test bed exhaust system for a Graham Supercharger on a B-12 unit. | ||
| View original record | +209 To RHC. Hs/Mths.13/KW.17.12.34. Graham Supercharger on B-12 Unit. We wish to try the effect of Buick hot spot in the Test Bed Exhaust system so that we can control the heat to supercharger… | ||
| scan0089 | Durability, slow running, and mechanical reliability of centrifugal superchargers. | ||
| View original record | To Messrs. From HS/Rm. c. to OF. c. to W. c. to By. c. to Lr. c. to Hn. c. to Hn/Wd. +209 Centrifugal Supercharging. We have now accumulated a considerable amount of information on the centrifugal… | ||
| scan0090 | Technical report on supercharging a Bentley engine, discussing power curves, boost levels, and blower efficiency. | ||
| View original record | -2- We have not done any endurance running on the Bentley on the test bed but have run a number of power curves. So far we have experienced no trouble whatever up to 6 lbs. of boost, running with a… | ||
| scan0091 | Summary of the positive experience with centrifugal blowers (superchargers) on cars like the Bentley, predicting their future standardization. | ||
| View original record | SUMMARY. Our experience so far has made us very enthusiastic about the centrifugal blower for a car such as the Bentley where performance is a primary consideration. To take full advantage of a blower… | ||
| scan0092 | Power curve graph comparing a naturally aspirated Bentley engine with estimated and measured supercharged configurations. | ||
| View original record | BENTLEY POWER WITH GRAHAN TYPE SUPERCHARGER B.H.P. 170, 160, 150, 140, 130, 120, 110, 100, 90, 80, 70 1500, 2000, 2500, 3000, 3500, 4000, 4500 1) ESTIMATED POWER OUTPUT WITH 60% EFFICIENT BLOWER. S.U.… | ||
| scan0093 | Communication regarding the circulation of a progress report on the Bentley supercharger. | ||
| View original record | x209 To Wor. from Hs/Rm. Hs/Rm.7/KW.19.12.34. Supercharger on the Bentley. Replying to Wor9/T.18.12.34, we have now circulated Hs/Rm.19/KW.18.12.34, which outlines the progress so far made. Hs/Rm. | ||
| scan0094 | Inquiring about progress on putting a supercharger on the Bentley chassis, with a handwritten reply. | ||
| View original record | Hs/Rm. from Wor. Wor9/T18.12.34. Is there anything more to be said about putting a supercharger on the Bentley chassis. This matter is on the Minutes for Thursday next and I would like to know if… | ||
| scan0095 | Data summary from test bed runs of a Graham Supercharger fitted to a Bentley. | ||
| View original record | To E. From Hs/Rm. c. to Wor. c. to By: x209 Hs/Rm.6/KW.19.12.34. Graham Supercharger on the Bentley. We have obtained a certain amount of data on the Graham Supercharger on the Bentley which we have… | ||
| scan0096 | Design considerations and testing of a supercharged engine, focusing on the blower, gears, and carburettor. | ||
| View original record | -2- Hs/Rm.6/KW.19.12.34. We have a certain amount of apprehension that with a pipe sloping downwards from the blower to the manifold, wet mixture may cause loading up when pulling at low speeds in… | ||
| scan0097 | The estimated performance of a supercharged Bentley engine. | ||
| View original record | To E. from Hs/Smth. c. to Wor. c. to By. Supercharged Bentley. Attached are estimated performance curves for the Bentley engine with various C.R's and boost pressures. The performances when… | ||
| scan0098 | Analysis of power curves and blower efficiency, proposing a modified blower design for an 8-cylinder engine. | ||
| View original record | -2- Hs/Smth.9/KW. 20.12.34. From these curves it will be seen that at 3250 r.p.m. a boost ratio of 1.23 is claimed to raise the power 34%. We have checked the boost pressure curve by measurements on… | ||
| scan0099 | Graph showing the estimated effect of varying compression ratio on Bentley engine performance. | ||
| View original record | FIG. 1 BENTLEY ENGINES ESTIMATED EFFECT OF VARYING C.R. MECH. LOSS AT MAX. TORQUE TAKEN AS 20 M.E.P. " " " POWER " " 40 M.E.P. MAX. TEMP ° C ABS. MAX. PRESSURE LBS / SQ IN COMPRESSION RATIO B.M.E.P &… | ||
| scan0100 | Graph showing the estimated effect of varying boost on a Bentley engine with a 6.5/1 compression ratio. | ||
| View original record | FIG. 2 BENTLEY ENGINE ESTIMATED EFFECT OF VARYING BOOST 6.5/1 C.R BLOWER ENGINE DRIVEN FULL LINES REFER TO 75% BLOWER EFFY DOTTED " " 50% " " BOOST AIR TEMP - °C MAX PR - LBS/SQ" B.H.P. AT 4300 R.P.M.… | ||
| scan0101 | Performance chart showing the estimated performance of a Bentley engine with boost against compression ratio. | ||
| View original record | FIG 3 BENTLEY ENGINE ESTIMATED PERFORMANCE WITH BOOST TO MAINTAIN MAX. PRESS. AT 800 LBS/D' BLOWER EFFY. 75 % " " 50 % Curve Labels: SP. CONS. AT 2500 R.P.M. BOOST TEMP AT 4300 R.P.M. B.H.P. AT 4300… | ||
| scan0102 | Performance graph comparing supercharged and unsupercharged versions of a Graham-Paige S/C engine. | ||
| View original record | GRAHAM-PAIGE S/C ENGINE SUPERCHARGED UNSUPERCHARGED B.M.E.P B.H.P BOOST PRESS DEPN UNSUPERCHARGED R.P.M. "Hg B.H.P B.M.E.P 40, 50, 60, 70, 80, 90, 100, 110, 120, 130, 140 2, 4, 6 500, 1000, 1500,… | ||
| scan0103 | Letter to the Graham-Paige Corporation regarding supercharger testing on a 3 1/2 litre engine. | ||
| View original record | +209 Exptl. Dept. Hs/Smth.2/KW. 20th December, 1934. The Graham-Paige Corporation, Detroit, Michigan, U.S.A. For the attention of Mr. Kishline. Dear Sirs, We have now done a certain amount of test bed… | ||
| scan0104 | Results of a 10,000-mile test on a Graham car's blower gears. | ||
| View original record | -2- authentic, and how you account for the extraordinarily large power increase. We have now completed 10,000 miles on our Graham car and on stripping the blower find the gears to have worn well -… | ||
| scan0105 | Performance graph for a 3 1/2 litre engine, comparing supercharged and unsupercharged variants. | ||
| View original record | R.R. 3 1/2 LITRE ENGINE SUPERCHARGED BY GRAHAM - PAIGE BLOWER 5.5/1 S/C GEAR RATIO CARBS - UNSUPERCHARGED - 2 EXPANDING THROAT S.U.S CARBS - SUPERCHARGED - STROMBERG DOWNDRAFT HOT WATER IN SUPERCHARGE… | ||
| scan0106 | Performance graph for a Graham-Paige S/C engine, comparing supercharged and unsupercharged configurations. | ||
| View original record | GRAHAM-PAIGE S/C ENGINE SUPERCHARGED UNSUPERCHARGED B.H.P. & B.M.E.P B.M.E.P B.H.P "Hg BOOST PRESS. DEPN UNSUPERCHARGED R.P.M. 140 130 120 110 100 90 80 70 60 50 40 6 4 2 500 1000 1500 2000 2500 3000… | ||
| scan0107 | Brief report on work carried out with the Graham Supercharger on a B-12 unit for a Bentley. | ||
| View original record | 4209 To E. from Hs/Mths. c. to Wor. c. to By. Hs/Mths.1/KW.31.12.34. Graham Supercharger on the Bentley. This report is only a brief resume of the work carried out so far with the Graham Supercharger… | ||
| scan0108 | Modifications to an S.U. carburetter and supercharger to improve engine power and slow running performance. | ||
| View original record | -2- In order to improve the top speed power output we fitted an S.U. carburetter and the power curves taken are shown on B.V.61, it will be noticed that the top speed power is increased by… | ||
| scan0109 | Test report on engine performance at 750 r.p.m. concerning a 'building up' issue. | ||
| View original record | -3- We found that at 750 r.p.m. full throttle and with only exhaust heat to the volute casing, we had to close the butterfly valve in the exhaust downtake pipe half way in order to avoid "building… | ||
| scan0110 | Performance graph comparing various supercharged and non-supercharged configurations for a Graham Supercharger on a Bentley engine. | ||
| View original record | GRAHAM SUPERCHARGER ON BENTLEY B.V. 61 UNIT :- B.12 SPECIFICATION :- R H C/CP 1/EP 12.12.34 COMPRESSION RATIO 6.64 : 1 WASHER REMOVED FROM ROTOR CASING. ① 1 7/8" S.U. CARB. ORIGINAL LONG INTERMEDIATE… | ||
| scan0111 | Performance graph for a Graham Supercharger on a Bentley engine. | ||
| View original record | B.Y.62. GRAHAM SUPERCHARGER ON BENTLEY UNIT:- B.12. SPECIFICATION: R.H.C./C.P./E.P 12.12.34 COMPRESSION RATIO:- 6.64 : 1 WASHER REMOVED FROM ROTOR CASING ① GRAHAM CARBURRETTER, ORIGINAL LONG… | ||
| scan0112 | Performance graph comparing supercharged and non-supercharged configurations for a Graham supercharger on a Bentley engine. | ||
| View original record | GRAHAM SUPERCHARGER ON BENTLEY B.V. 63. UNIT:- B.12. SPECIFICATION:- RHC/CP 1/EP. 12.12.34 COMPRESSION RATIO 6.64:1 ① GRAHAM CARBURETTER ORIGINAL LONG INTERMEDIATE PIPE, HOT WATER TO ROTOR CASING.… | ||
| scan0113 | Performance graph comparing different configurations of a Graham supercharger on a Bentley engine. | ||
| View original record | GRAHAM SUPERCHARGER ON BENTLEY B.V. 64 UNIT:- B12 SPECIFICATION:- RHC/CP /EP 12.12.34 COMPRESSION RATIO:- 6.54:1 NO WASHER BETWEEN HALVES OF ROTOR CASING ① 1 7/8 S.U. CARB. LONG INTERMEDIATE PIPE.… | ||
| scan0114 | Performance graph for a Graham Supercharger on a Bentley engine, plotting Boost Pressure against RPM under three test conditions. | ||
| View original record | GRAHAM SUPERCHARGER ON BENTLEY B.V. 65 UNIT: B12 SPECIFICATION R.H.C./C.P. 1/EP 12.12.34 COMPRESSION RATIO: 6.64:1 ① GRAHAM CARBURRETTER ORIGINAL LONG INTERMEDIATE PIPE COLD WATER TO ROTOR CASING, NO… | ||
| scan0115 | Performance graph of a Graham Supercharger on a Bentley, comparing boost temperature against RPM under different configurations. | ||
| View original record | GRAHAM SUPERCHARGER ON BENTLEY B.V. 66 UNIT - B.12 SPECIFICATION RHC/C.P. 1/EP 12-12-34 COMPRESSION RATIO 6.64 : 1 NO WASHER BETWEEN HALVES OF ROTOR CASING NORMAL TEST HOUSE TEMPERATURE 17°C ① 1 7/8… | ||
| scan0116 | Graph of boost temperature vs RPM for a Graham Supercharger on a Bentley. | ||
| View original record | GRAHAM SUPERCHARGER ON BENTLEY B.V. 67 UNIT: B 12 SPECIFICATION: RHC/CP 1/EP 12 COMPRESSION RATIO: 6.64:1 NO WASHER BETWEEN HALVES OF ROTOR CASING NORMAL TEST HOUSE TEMPERATURE 17°C ① GRAHAM… | ||
| scan0117 | Blueprint showing the installation of a Graham Supercharger on a Bentley engine. | ||
| View original record | GRAHAM SUPERCHARGER ON BENTLEY BV. 68. ORIGINAL WATER JACKET CONNECTIONS BOOST TEMPERATURE TAKEN HERE ORIGINAL LONG INTERMEDIATE PIPE R.Hy 20-12-37 | ||
| scan0118 | Blueprint detailing the installation of a Graham Supercharger on a Bentley engine. | ||
| View original record | GRAHAM SUPERCHARGER ON BENTLEY B.V. 69 NORMAL WATER JACKET CONNECTIONS WATER JACKET BOOST TEMPERATURE TAKEN HERE SHORT INTERMEDIATE PIPE R.H 20-12-34 | ||
| scan0119 | Order for a replacement Graham-Paige supercharger casting for Bentley order 54107. | ||
| View original record | x209 To Roy. c. to RHC. Hs/Smth.10/KW.28.12.34. Bentley - Order No. 54107. Will you please order from Messrs. Cleverlys Ltd., 12, Berkeley St., London, W.1. - 1 Main Casting for a Graham-Paige Custom… | ||
| scan0120 | Request to manufacture a coupling for rig tests on a B-12 unit's blower. | ||
| View original record | x209 To RHC. Hs/Smth.11/KW.10.1.35. Hs.1703. Will you please make us the coupling This is for use in connection with the rig tests on the blower off B-12 unit and we should be glad if you could push… | ||
| scan0121 | Modifications and sourcing parts for a car supercharger. | ||
| View original record | x209 To RHC. Hs/Smth.22/KW.17.1.35. Car Supercharger. We wish to try a supercharger with a diffuser, with the object of raising the efficiency and at the same time observing the effect of the diffuser… | ||
| scan0122 | Requesting the fitting of an R.R. dural rotor to a Supercharger B-12 unit. | ||
| View original record | To RHC. X209 Hs/Smth.1/KW.25.1.35. Supercharger B-12 Unit. Will you please fit the R.R. dural rotor to the blower. We should like the clearance between the rotor and casing to be held down to .015" if… | ||
| scan0123 | Request to remove a supercharger rotor casing from a Graham car in order to take measurements. | ||
| View original record | x209 To RHC. C. to Hs/FD. Hs/Smth.10/KW. 21.1.35. Car Supercharger. In order to detail Hs.1717, S. Bannister will require a rotor casing top half so as to obtain its measurements. The casing on the… | ||
| scan0124 | Two different arrangements for a supercharged unit's crankcase and crankshaft. | ||
| View original record | 4209 To RHC. Hs/Smth.10/KW.29.1.35. Supercharged Unit. Confirming our conversation, we should like two crankcases and crankshafts produced for this unit. Each crankcase should have alternative faces… | ||
| scan0125 | Request to hold crankcase production for modifications and release details for alternative supercharger positions on the Bentley. | ||
| View original record | To RHC. x209 Hs/Rm.3/KW. 2.2.35. Alternative Supercharger Positions on the Bentley. Will you please hold up the two crankcases which you are producing for us having a better flywheel bearing, as E. is… | ||
| scan0126 | Challenges of creating a silent and durable supercharger drive for the Bentley. | ||
| View original record | To E. c. to Wor. c. to By. x109 HS/Rm. 25/KW. 4. 2. 35. Supercharging the Bentley. We think that the most difficult job in supercharging the Bentley is to get a silent and durable supercharger drive.… | ||
| scan0127 | Power and induction system experiments for a Supercharged Bentley Unit. | ||
| View original record | To E. c. to Wor. c. to By. Hs/Smth.8/KW.4.2.35. Supercharged Bentley Unit. Power. Since our previous report on this subject (Hs/Mths.1/KW.21.12.34) we have been experimenting with valve timing, with a… | ||
| scan0128 | The development and testing of supercharger components including worm gears, carburetters, and blowers. | ||
| View original record | -2- We have in hand three alternative arrangements for mounting the blower, by which we hope to discover the best all round induction system. We propose also to work on a thermostatic control which… | ||
| scan0129 | Performance graph for Supercharged Unit B.12 comparing different engine configurations with a Graham Blower. | ||
| View original record | SUPERCHARGED UNIT B.12 PERFORMANCE WITH GRAHAM BLOWER (5.5/1 OVERALL GEAR RATIO) BLOWER IN POSITION 1. WITH SHORT INDUCTION PIPE. WATER HEAT TO PIPE JACKET, BUT NOWHERE ELSE. NO PACKING WASHER IN… | ||
| scan0130 | Experimental schemes for supercharging a Bentley. | ||
| View original record | x209 To Hs/Rm. from E. c. Wor. By. E/JNR. E/PSN. Hs/Smth. E.2/HP.5.2.35. Supercharging the Bentley. The report on the above, Hs/Smth.8/KW.4.2.35 is very encouraging. We note the experience you have… | ||
| scan0131 | Installation of Supercharged Unit B-12 and the required chassis modifications to avoid fouling the steering box. | ||
| View original record | 4209 To RHC. Hs/Smth.7/KW.6.2.35. Supercharged Unit B-12. We wish to put the unit in a car before long so as to determine its behaviour on the road. We know that it will go into the chassis with the… | ||
| scan0132 | New camshaft for Bentley models with silent tappets and its potential use on the supercharger version. | ||
| View original record | To RHC. c.c. to Hs/Smth. +209 HS/Rm.12/KM.14.2.35. A new camshaft has just been issued for use on the Bentley with silent tappets. We think that this camshaft will also give us very good results on… | ||
| scan0133 | The fitting of a Graham supercharger to a Bentley engine for road demonstration. | ||
| View original record | To RHC. c. to Hs/Smth. 4209 Hs/Rm.5/KW.14.2.35. Supercharging the Bentley on the Road. Will you please arrange to fit the Graham Supercharger to the crankcase at present going through with the reduced… | ||
| scan0134 | Request to manufacture two springs for a Bentley Auto Boost Control. | ||
| View original record | To RHC. +109 Hs/Smth.19/KW.25.2.35. Auto Boost Control - Bentley. Hs.1795/6. Will you please make us two springs to Print attached. Hs/Smth. | ||
| scan0135 | Use of an air silencer for a supercharged Bentley engine. | ||
| View original record | To RHC. x 209 Hs/Smth.1/KW.15.2.35. Supercharged Bentley Engine. We shall want to use an air silencer in connection with this engine when we put it in a chassis. Will you please make us the pipe and… | ||
| scan0136 | Visit to Mc Evoy Superchargers, detailing their products, contracts, and a comparison with the Zoller blower. | ||
| View original record | +109 TO MR. E.H. Copy to MR. Hs. Hives. Mc Evoy Superchargers. On Saturday I went round their Derby Works with a friend who is having one fitted to his car. They are installing a huge amount of brand… | ||
| scan0137 | New design scheme for the supercharged Bentley B-12 unit. | ||
| View original record | To RHC. +209 Hs/Smth.21/KW. 26.2.35. Supercharged Unit B-12. The Design Dept. have got out a scheme for the supercharged Bentley in which the blower is on the off side of the engine, but above the… | ||
| scan0138 | Request regarding parts for the carburetter flange on a Bentley Supercharger. | ||
| View original record | To RHC. L209 Hs/Smth.1/KW. 26.2.35. Hs.1797. We require these for the carburetter flange on the Bentley Supercharger. Hs/Smth. | ||
| scan0139 | The demonstration of a Bentley with a Graham Paige supercharger. | ||
| View original record | Rm To Rm. from Sg. re Supercharging the Bentley. Sg3/E27.2.35 You will remember that at our last meeting it was said that you expected to be able to demonstrate a Bentley with the Graham Paige… | ||
| scan0140 | Request for delivery dates for a Bentley camshaft and supercharger diffuser pieces to schedule testing for Supercharged Unit B-12. | ||
| View original record | To RHC. 409 Hs/Smth.2/KW.28.2.35. Supercharged Unit B-12. We should be glad to have an approximate date for the following pieces in connection with this unit, so that we can draw up a programme for… | ||
| scan0141 | Delay in demonstrating a supercharged Bentley due to waiting for gears from America. | ||
| View original record | 4209 To Sg. From Hs/Rn. Hs/Rn. 9/KW. 28.2.35. Supercharging the Bentley. Sg. 3/E. 27.2.35. As we pointed out at a recent Conference, we are waiting for some gears from America for the supercharger… | ||
| scan0142 | Sending Supercharged Unit B-12 to the shop for fitting a blower, a new camshaft, and investigating low oil pressure. | ||
| View original record | 409 To RHC. Hs/Smth.18/KW.28.2.35. Supercharged Unit B-12. In the course of a day or two we shall be sending B-12 into the shop for you to fit the blower on the water pump side according to EX.17268.… | ||
| scan0143 | Specification for the construction of a new supercharged unit B-14. | ||
| View original record | To RHC. +209 Hs/Smth.3/KW.4.3.35. New Supercharged Unit B-14. The specification to which this unit should be built is as follows :- Crankcase with 1.250/1 dynamo drive. Standard Bentley cylinder head… | ||
| scan0144 | Clarifying instructions and parts requirements for supercharging the Bentley. | ||
| View original record | To RHC. x209 Hs/Smth.23/KW. 8.3.35. Supercharging the Bentley. Our various instructions regarding units B-12 & B-14 may have given rise to a certain amount of confusion. We append herewith a suggested… | ||
| scan0145 | Record of modifications and testing procedures for engine components B-12 and B-14. | ||
| View original record | -2- Hs/Smth.28/KW.8.3.35. B-12 (1) Built up to EX.17268 according to memo. Hs/Smth.18/KW28.2.35. 3.63/1 D.B.S. Gears. New supercharger casing modified for this arrgt. R.R. dural rotor and rotor casing… | ||
| scan0146 | Modifications and a subsequent failure of a B-12 unit. | ||
| View original record | To RHC. +rog Hs/Smth.10/KW.4.3.35. B-12 UNIT. We are sending this unit into the shop to-day for the modifications asked for in Hs/Smth.18/KW.28.2.35. Since issuing the above memo, one of the big end… | ||
| scan0147 | Request to make two adaptors for a supercharged Bentley. | ||
| View original record | To RHC. x209 Hs/Smth.1/KW.23.3.35. Will you please make us the two adaptors Hs.1851/2. These are for the supercharged Bentley. Hs/Smth. | ||
| scan0148 | Fuel distribution challenges in twin volute superchargers and the decision to focus on a single volute design. | ||
| View original record | To E. +109 E/PSN.1/MN.3.4.35. Copy to Hs/Rm. -------------- Centrifugal Superchargers for Car Engines. We have been considering further the twin volute supercharger and have come to the conclusion… | ||
| scan0149 | Confirming preparations for a visitor's review of a Spectre 2 car and a supercharged Bentley. | ||
| View original record | To RHC. +209 HS/Rm.23/KW.10.4.35. Confirming our conversation with reference to Sg.'s visit on Tuesday :- (1) We should like Spectre 2 to be out of the shop by lunch time on Tuesday with the… | ||
| scan0150 | Instructions for workshop modifications and fault diagnosis on supercharged units B-12 and B-14. | ||
| View original record | To RHC. +209 Hs/Smth.20/KW.10.4.35. Supercharged Units. B-12. We are now sending B-12 into the shop for the following work :- (1) A thump has developed, apparently in the neighbourhood of No. 2 big… | ||
| scan0151 | Two small modifications to be carried out on a two-speed supercharger. | ||
| View original record | x209 K/Kbr.2/WN.10.4.35. Copy to [redacted] Hs. [redacted] Two-speed Supercharger. We are sending you herewith two blue prints of D.K.S.2428 showing two small modifications that we should like carried… | ||
| scan0152 | Design and development of a supercharger drive for a Bentley. | ||
| View original record | To Sg. and Wer. from E. c. Hs. By. E/SNR. E/BSN. Hs/Smth. Supercharger Drive - Bentley. Our experience with the supercharger drive on the Graham Paige shows us that the worm gear for the step up… | ||
| scan0153 | Modifications to a blower's mounting, drive casing, and drive ratios. | ||
| View original record | - sheet 2 - E.1/HP.11.4.35. any disturbance of the conditions maintaining silence and alignability. We are, therefore, carrying out modifications to our design whereby the blower will be mounted in… | ||
| scan0154 | Blueprints and modifications for a Humphrey Sandberg freewheel clutch for a two-speed supercharger. | ||
| View original record | To BY. Copy to Hs. RHC. x209 E/Rbr.1/MN.11.4.35. ------------------- Two-speed Supercharger. ------------------- We are sending you herewith two blue prints of D.E.S.2430 showing a five-times full… | ||
| scan0155 | From 'Sg' to 'Rm' regarding the delayed demonstration of a Bentley fitted with a Graham Paige supercharger. | ||
| View original record | x109 To Rm. from Sg. re Bentley. Sg5/E12.4.35 Copy to Wor.E. You will remember that at our conference on the 14th February you gave information that you hoped to demonstrate a Bentley with the Graham… | ||
| scan0156 | Testing the placement of a supercharger on a Bentley engine, noting delays with American parts. | ||
| View original record | To Hg. & HOF. c. to R. c. to Hy. c. to Ba. c. to En. x209 HS/Rm.11/KW.12.4.35. Supercharged Bentley. The object of these tests on the blower is to reproduce the condition where the supercharger is on… | ||
| scan0157 | Modifications to a supercharged Bentley's induction system to improve slow running and distribution. | ||
| View original record | To Mr. A Wor. c. to R. c. to BY. c. to Du. c. to Bn. Supercharged Bentley. Work carried out since issue of Hs/Smth.8/ML.4.2.35. Blow Running, Distribution, etc. Since issuing the above report we have… | ||
| scan0158 | Engine modifications concerning exhaust bends, supercharging arrangements, and carburetor comparisons. | ||
| View original record | -2- Our next move was to replace the round bend in this arrangement by a square one, with the idea of breaking up the petrol stream and improving distribution. No improvement was noted, however. The… | ||
| scan0159 | Progress report on the development and testing of a new blower, supercharger, and associated drive components. | ||
| View original record | -3- Hs/Smth.12/KW.18.4.35. Blower. We have replaced the Grahen rotor by an R.R. dural rotor, machined all over and of 50% greater tip width. The clearance between the rotor and its casing is now… | ||
| scan0160 | Blueprint showing the arrangement of a supercharger on a Bentley. | ||
| View original record | ARRANGEMENTS OF S/CHR ON BENTLEY POSN 2 POSN 1 1 2 3 4 5 6 No. 1905 | ||
| scan0161 | Performance graph for a supercharged engine (Unit B.12) with a Graham Blower, comparing different rotor types against an unsupercharged configuration. | ||
| View original record | SUPERCHARGED UNIT B.12 PERFORMANCE WITH GRAHAM BLOWER (5.15:1 OVERALL GEAR RATIO) BLOWER IN POSITION 1. WITH SHORT WATER HEATED INDUCTION PIPE. NO HEATING ELSEWHERE. UNSUPERCHARGED CURVE TAKEN WITH… | ||
| scan0162 | Performance results and design considerations for a supercharged Bentley engine. | ||
| View original record | x209 To Sg. and Wor. from E. E.9/HP.15.4.35. c. Hs. By. RHC. Hs/Smth. E/PSN. Supercharged Bentley. We are very interested in the results given in report Hs/Smth.12/KW.12.4.35 which indicate the… | ||
| scan0163 | Induction system modifications to address cylinder richness and acceleration issues. | ||
| View original record | (sheet 2) E.9/HP.15.4.35. the induction pipe which may delete the bias causing richness in cylinders one and two on the existing set-up at lower speeds full throttle. With regard to the question of… | ||
| scan0164 | Letter from Michigan Tool Company apologizing for a delay and detailing a design change for an order of supercharger gears. | ||
| View original record | L209. R.H.C. MICHIGAN TOOL COMPANY 7171 SIX MILE ROAD, E. [LOGO] TEL. WHITTIER 9030 DETROIT, MICH. April 22, 1935. Rolls-Royce Limited, Derby, England. Att: Mr. F. D. Smith. Gentlemen: We wish to… | ||
| scan0165 | Requesting to fit old D.B.S. gears to a B-12 rebuild for slow running experiments due to a delay with American supercharger gears. | ||
| View original record | To RHC. x209 Hs/Smth.21/KW. 26.4.35. B-12. In the event of the American supercharger gears not having arrived in time for the rebuild of B-12, will you please fit the old D.B.S. gears of 3.6 ratio.… | ||
| scan0166 | Faulty B-14 supercharger unit that is consuming excessive oil. | ||
| View original record | To RHC. from Hs/Smth. X209 Hs/Smth.8/MJ.24.4.35. B-14 Unit. The supercharger is taking too much oil, reducing the main oil pressure by about 50%. This condition has developed progressively since we… | ||
| scan0167 | From Sg. to Hs. arranging to test a car with a Graham Paige supercharger. | ||
| View original record | X209 To Hs. from Sg. re Bentley Supercharger. Sg11/E29.4.35 Copy to Wor.E. You will remember at our meeting just before Easter information was given that we should be able to try the car with the… | ||
| scan0168 | Experimental supercharging of a Bentley, referencing the 'Centric' supercharger and information from Mr. Briggs Cunningham. | ||
| View original record | W/S - C. X-209 Hs/Rm.5/KW.19.9.36. Supercharging the Bentley. Replying to C.7/C.11.9.36. We do know of the "Centric" supercharger. We also know from Mr. Briggs Cunningham that the conVersion was not… | ||
| scan0169 | Customer testimonial regarding a supercharged car and an internal query about the 'Centric' supercharger. | ||
| View original record | S/W Hs/Rm. [Handwritten: esy] C7/C11.9.36 A customer named Harjes writes us from New York as follows:- "I have no words to express the joy that I get out of driving this car. The only change I made on… | ||
| scan0170 | Letter to the Institute of Automobile Engineers enclosing curves related to a paper on Supercharging. | ||
| View original record | x-209 Exptl. Dept. Hs/Smth.9/KW. 1st January, 1935. The Secretary, The Institute of Automobile Engineers, Watergate House, Adelphi, LONDON, W.C.2. Dear Sir, During the discussion at Derby of Mr.… | ||
| scan0171 | Requesting permission to share supercharging performance curves with the Institute of Automobile Engineers. | ||
| View original record | TW9 To Wor. Hs/Smth.4/KW.24.12.35. At a recent meeting of the I.A.E. held in Derby, the general question of Supercharging was discussed. The author of the paper, Mr. Thorneycroft of Ricardo's,… | ||
| scan0172 | Letter from Centric Super-Chargers Ltd. offering a supercharger for testing on Bentley cars. | ||
| View original record | x209 CENTRIC SUPER-CHARGERS Ltd. C. SHORROCK, J. HAYDOCK, JR. E. H. ARNOTT. Telephone: PRESTON 2839 Designers & Manufacturers of SUPER-CHARGERS FOR INTERNAL COMBUSTION ENGINES AND OF ROTARY… | ||
| scan0173 | Blueprint of a vane ring adapted for a Graham supercharger on a Bentley. | ||
| View original record | Ex 17516 M/C VANE RING SO THAT IT IS JUST NIPPED BY CASINGS. .005 VELLUMOID .203 ON GRAHAM S/C (B.D. UNIT) EXISTING LOWER CASING ROLLS-ROYCE, LTD PRINT ROOM OCT 30 1936 DERBY 7.500 DIA 5.700 DIA 5.200… | ||
| scan0174 | Blueprint graph of boost pressure curves for a Supercharged Bentley, comparing diffuser and non-diffuser type superchargers. | ||
| View original record | SUPERCHARGED BENTLEY. BOOST PRESSURE CURVES. TAKEN WITH 1 9/32" CHOKE STROMBERG CARB: A: DIFFUSER TYPE S/CHR Ex: 17516. ROTOR TIP SPEED AT 1000 R.P.M. OF ENGINE = 165 FT/SEC: B: NON DIFFUSER TYPE.… | ||
| scan0175 | Progress and road testing of an experimental Bentley supercharger. | ||
| View original record | To Sg. From Hs. c. to Wor. c. to E. L.W.9 Hs.5/MJ.8.5.35. Re. Bentley Supercharger. Replying to Sg.11/E.29.4.35. We have now run the supercharger on the road. All the work so far done on the Bentley… | ||
| scan0176 | The fitting of new 29/6 ratio gears from America to Supercharged Bentley units. | ||
| View original record | To RHC, v-109 Hs/Smth.1/KW.10.5.35. Supercharged Bentley Units. Now that two sets of gears of 29/6 ratio have arrived from America, we should like one set fitting to B-12 unit and the other to B-14 in… | ||
| scan0177 | Testing of a Bentley Supercharger to assess its performance, roughness, and noise. | ||
| View original record | x209 To Hs. from Sg. Copy to Wor.E. [text struck through] re Bentley Supercharger. Thanks for Hs.15/MJ.8.5.35½. I appreciate the position. What I was really wanting to try the car for was to see what… | ||
| scan0178 | Testing procedures for a freewheel clutch on a two-speed supercharger drive. | ||
| View original record | +209 To Hs. & RHC. Copy to E. E/Rbr.6/MN.9.5.35. Freewheel Clutch for Two-speed Supercharger Drive. With regard to the last failure of the above we would like to try the effect of having less… | ||
| scan0179 | Requesting a supercharger from a Graham-Paige car be sent to the shop to copy some of its parts. | ||
| View original record | To Hs/FD. X209 Hs/Smth.14/KW.13.5.35. Will you please send the supercharger on the Graham-Paige car into the shop. We want this to copy one or two of the pieces. Hs/Smth. | ||
| scan0180 | Request for the return of a Graham Supercharger shaft that was sent in error. | ||
| View original record | G/Mt. c. to D/BP. x209 Hs/FD.12/KW.11.5.35. Will you please return one Graham Supercharger shaft to Messrs. Cleverleys Ltd., 12, Berkeley St., London, W.1. This has been sent in error. Hs/F.Dodd. | ||
| scan0181 | Requesting an official order for Graham-Paige supercharger parts from Cleverleys Ltd. | ||
| View original record | To Roy. L209 Hs/Smth.4/KW.21.5.35. Order No. 54322. Graham-Paige. Will you please pass an official order to Cleverleys Ltd., 32, St. Mary Abbot's Terrace, London, W.14, for the following supercharger… | ||
| scan0182 | Letter from Cleverlys Limited regarding a delay and proposed solution for supplying supercharger parts. | ||
| View original record | CLEVERLYS LIMITED Automobile Engineers & Agents 32 ST. MARY ABBOT'S TERRACE 300 YARDS EAST OF OLYMPIA MAIN ROAD ENTRANCE 80 NEW AND SECONDHAND CARS ON VIEW Austin-Morris-Wolseley-Vauxhall-Standard… | ||
| scan0183 | To Roy about cancelling an order with Cleverleys, in relation to Graham-Paige. | ||
| View original record | X-209 To Roy: Hs/Smth.11/KW.25.5.35. Graham-Paige. Re Hs/Smth.4/KW.21.5.35. We have been advised by Cleverleys that they cannot supply us immediately with the pieces we ordered from them. Attached is… | ||
| scan0184 | Letter to Cleverleys Ltd. declining to proceed with a supercharger enquiry. | ||
| View original record | X209 Exptl. Dept. HS/Smth.10/KW. 25th May, 1935. Messrs. Cleverleys Ltd., 32, St. Mary Abbot's Terrace, London, W.14. Your Ref: EGC/SS. Dear Sirs, We beg to thank you for yours of the 22nd inst. We do… | ||
| scan0185 | Request to install a second set of American gears into a supercharger blower. | ||
| View original record | +209 To RHC, c. to Hs/FD. Hs/Smth.22/KW.31.5.35. Supercharger off B-14 Unit in 3-B-IV. Will you please put the second set of American gears of 4.84/1 ratio in this blower. The blower is at present on… | ||
| scan0186 | Request to fit a 7 bladed diffuser to a Supercharger off a B-12 Unit. | ||
| View original record | To RHC. x209 Hs/Smth.7/KW.7.8.35. Supercharger off B-12 Unit. While this is in the shop, will you please fit the 7 bladed diffuser, Hs.2061. Hs/Smth. | ||
| scan0187 | Request to taper off the rotor blades at the inlet for the supercharger from the B-12 Unit. | ||
| View original record | To RHC. X209 Hs/Smth.2/KW.16.7.35. Supercharger off B-12 Unit. Whilst this unit is in the shop, will you please taper off the rotor blades at the inlet as you did on the supercharger on B-14. Hs/Smth. | ||
| scan0188 | Requesting a new seven-vaned diffuser for a Bentley Supercharger due to noise issues with the current nine-bladed one. | ||
| View original record | To RHC. x-209 Hs/Smth, 2/KW.17.7.35. Bentley Supercharger with Diffuser. The nine-bladed diffuser we are using at present is very noisy, and we wish to try one with seven vanes. Will you please make… | ||
| scan0189 | Letter from Eustace Watkins Ltd regarding an out-of-stock 'Drive from Dynamo to Supercharger' part, with a suggestion to repair the broken part and an accompanying sketch. | ||
| View original record | CUSTOMERS CARS ARE STORED OR DRIVEN ONLY BY OUR STAFF AT OWNERS' RISK X209 EUSTACE WATKINS LTD London Distributors Wolseley Cars WEST END SHOWROOMS: 49 & 50, BERKELEY STREET, W.1, AND 32, ST. MARY… | ||
| scan0190 | Road and test bed results for a supercharged Bentley, including diffuser development. | ||
| View original record | To Sg. & Wor. c. to E. c. to Ey. x-209 Ha/Smth.20/KW.30.10.35. Supercharged Bentley. Work carried out since issue of Ha/Smth.12/KW.12.4.35. Results on the Road. 3-B-IV. We have run a supercharged unit… | ||
| scan0191 | Issues with a diffuser supercharger, concluding its unsuitability for cars due to noise and performance characteristics. | ||
| View original record | -2- The characteristic curve falls away more steeply as the output is increased than when no diffuser is present. This resulted in the boost curve flattening off badly at high speeds as shown on… | ||
| scan0192 | Investigation into poor slow running performance caused by the supercharger and various attempts to improve it. | ||
| View original record | -3- Slow Running. We have attempted to improve the slow running with the blower on the induction side of the engine, feeding downwards into the manifold. We fitted a transparent window at the Tee… | ||
| scan0193 | Recommendations for engine component design and a proposal for a supercharged 6-cylinder engine for the next Bentley car. | ||
| View original record | -4- HS/Smth.20/KW.30.10.35. Our recommendations are :- (1) The floor of the volute and the intermediate pipe should drain all the way to the manifold, leaving no places where pools of petrol can… | ||
| scan0194 | Next steps to proceed with building a supercharging unit. | ||
| View original record | -5- HS/Smith.20/KW.30.10.35 In any case, if we are to proceed with supercharging, we think the next move is to build a unit to a proper design. HS/F.Ll.Smith. Att: Hs.2211/2/3 & Ex.17516. | ||
| scan0195 | Diagram of a water-jacketed petrol collector for a supercharged engine. | ||
| View original record | WATER JACKETED BEND FROM S/CHR PETROL COLLECTOR. HOT SPOT THE WET PETROL RUNNING DOWN THE WALLS OF THE BEND IS COLLECTED IN THE TROUGH & RUNS DOWN THE BAR. IT IS THEN EVAPORATED FROM THE FLOOR OF THE… | ||
| scan0196 | Performance characteristics chart for a supercharged Bentley blower. | ||
| View original record | SUPERCHARGED BENTLEY BLOWER CHARACTERISTICS TAKEN AT ROTOR TIP SPEED OF 505.5 FT/SEC. STROMBERG 1 5/16" CARB FITTED DIFFUSER TYPE S/CHR EX 1751G NON-DIFFUSER S/CHR WITH ROTOR EX 16717 BOOST TEMP RISE… | ||
| scan0197 | Experimental centrifugal supercharger and induction pipes for a Bentley. | ||
| View original record | 209 To BY. Copy to RHC. Rm. Dev E/PSN.1/MN.9.11.36. Centrifugal Supercharger for Bentley. We send you herewith LeC.5282 of an experimental supercharger and induction pipes for the Bentley. Will you… | ||
| scan0198 | Letter from Centric Super-Chargers Ltd. to Bentley Motors offering design and supply services for superchargers. | ||
| View original record | CENTRIC SUPER-CHARGERS Ltd. C. SHORROCK, J. HAYDOCK, JR. F. W. SMITH. Designers & Manufacturers of SUPER-CHARGERS FOR INTERNAL COMBUSTION ENGINES AND OF ROTARY COMPRESSORS Telephone: PRESTON 2839 BOW… | ||
| scan0199 | Letter to Centric Super-Chargers Ltd. declining to further discuss their supercharger. | ||
| View original record | 209. Experimental Dept. Rm/Smth.7/JH. 8th April, 1937. Your ref. JHT/MMcK. Messrs Centric Super-Chargers Ltd., Bow Lane, Fishgate Hill, Preston, Lancs. Dear Sirs, We thank you for your letter of March… | ||
| scan0200 | Letter from Centric Super-Chargers acknowledging Rolls Royce's decision not to consider their superchargers further at this time. | ||
| View original record | 209 CENTRIC SUPER-CHARGERS Ltd. C. SHORROCK, J. HAYDOCK, JR. F. W. SMITH. J. Hartley-Taylor Designers & Manufacturers of SUPER-CHARGERS FOR INTERNAL COMBUSTION ENGINES AND OF ROTARY COMPRESSORS… | ||
| scan0201 | The design challenges of fitting a centrifugal supercharger to Push Rod Bentley engines. | ||
| View original record | E, from Rm. c. to Hs. Rm6/R.25.6.37. CENTRIFUGAL SUPERCHARGER ON PUSH ROD BENTLEYS. The difficulty of putting a centrifugal supercharger on an overhead valve engine was clearly demonstrated by the… | ||
| scan0202 | Patent specification for improvements to internal combustion engines and superchargers therefor. | ||
| View original record | SUPERCHARGER FILE PATENT SPECIFICATION Tech C Convention Date (United States): Aug. 7, 1935. Application Date (in United Kingdom): July 22, 1936. No. 10505/37. (Divided out of No. 478,957). Complete… | ||
| scan0203 | Patent specification detailing a supercharger system with an adjustable mounting and flexible ducting for an internal combustion engine. | ||
| View original record | 2 478,982 water pump 23 and generator 24. The generator 24 is attached to that side of the supercharger driving gear housing opposite to the supercharger's attachment to the 5 accessory shaft 22 so… | ||
| scan0204 | Complete specification drawings showing various views of an engine's overhead valve mechanism. | ||
| View original record | 478,982 COMPLETE SPECIFICATION 2 SHEETS SHEET 1 [This Drawing is a reproduction of the Original on a reduced scale.] FIG. 1. FIG. 2. FIG. 3. FIG. 4. FIG. 5. FIG. 6. Malby & Sons, Photo-Lith. Part… | ||
| scan0205 | Preprint of a paper investigating the fundamentals of supercharging. | ||
| View original record | 1171. also 1282 PREPRINT.--Paper to be presented at the National Passenger Car Meeting of the Society of Automotive Engineers at the Hotel Statler, Detroit, Mich., March 28-30, 1938. Printed to… | ||
| scan0206 | Research program report on engine performance using dynamometer tests, different compression ratios, and supercharging. | ||
| View original record | -2- on engine performance are available to designers. The Ethyl Gasoline Corporation instituted a research program designed to yield such data. The first phase of the work consisted of dynamometer… | ||
| scan0207 | Paper discussing the influence of supercharging and compression ratio on various engine performance metrics. | ||
| View original record | -3- It is the purpose of this paper to discuss the influence of supercharging and compression ratio on power output, economy, fuel octane number requirement, exhaust gas temperature, exhaust valve… | ||
| scan0208 | Description of fuel flow and consumption testing apparatus, including carburetter air-fuel ratio control. | ||
| View original record | -4- Figure 7 is a photograph of the special pressure float bowl, and Figure 8 shows the fuel weighing tank and a portion of the electrical wiring between the scales and the electric clock used to time… | ||
| scan0209 | Test results document discussing gross power output, fuel economy, and the effects of supercharging on intake manifold pressures. | ||
| View original record | -5- The optical pyrometer used to measure the exhaust valve temperature is shown in Figure 11. Also shown in this photograph is the thermocouple in the exhaust manifold just below the quartz window,… | ||
| scan0210 | Data table and analysis of intake manifold depression and total boost at various engine speeds for different compression ratios. | ||
| View original record | -6- TABLE I. Intake Manifold Depression And Total Boost When A Manifold Pressure Of 10 Inches Of Mercury Above Atmospheric Was Maintained At All Speeds. | Engine Speed, R.P.M. | Intake Manifold… | ||
| scan0211 | The formula for calculating the power charged to a supercharger. | ||
| View original record | -7- Power Charged to Supercharger. Since the amount of power required to drive a blower is a function of the design features, it becomes apparent that the results obtained by the use of a… | ||
| scan0212 | Analysis of engine power output and fuel consumption, comparing supercharged and unsupercharged performance at different compression ratios. | ||
| View original record | -8- The calculated blower power requirement data are shown in Figure 13. The differences in blower power requirement for the two compression ratios resulted from differences in actual air consumption,… | ||
| scan0213 | Otto cycle efficiency, specific fuel consumption, and the effects of supercharging on engine performance. | ||
| View original record | -9- The efficiency of a theoretical Otto air cycle is independent of charge density and of the amount of heat supplied, and is determined by the expression: Efficiency = 1 - (1/r)^(n-1) where r equals… | ||
| scan0214 | Page comparing actual test horsepower data with theoretical calculations, including a heat balance table for an unsupercharged engine. | ||
| View original record | -10- Correlation of Actual Test Horsepower Data With Theoretical Calculations Over The Speed Range. It has been previously stated and will be more fully developed later that for the actual… | ||
| scan0215 | Tables of energy distribution percentages for supercharged engines at different compression ratios and speeds. | ||
| View original record | -11- Engine Speed, R.P.M. Percent Converted to Brake Work * Percent in Cooling Water. Percent in Exhaust Gases, Radiation, and Unaccounted for. 5.55 to 1 Compression Ratio Engine Supercharged to an… | ||
| scan0216 | Table and analysis of power increase from supercharging an engine with a 5.55 to 1 compression ratio. | ||
| View original record | -12- TABLE III. Power Increase Resulting From Supercharging Engine With 5.55 to 1 Compression Ratio by a Separately-Driven Blower To An Intake Manifold Pressure Of 10 Inches Of Mercury Above… | ||
| scan0217 | The effects of supercharging on spark advance and exhaust gas temperatures at different compression ratios. | ||
| View original record | -13- mean effective pressures occurred at slightly higher speeds for the supercharged engine than for the unsupercharged engine is problematical. Spark Advance. The effect of supercharging on maximum… | ||
| scan0218 | Analysis of test results comparing theoretical and actual engine performance with supercharging. | ||
| View original record | -14- Results from Tests at 1000 r.p.m. over a range of intake manifold pressure. The percent change in power that may be expected due to a change in the compression ratio of an engine may be… | ||
| scan0219 | Page detailing equations and theoretical considerations for calculating engine power and work. | ||
| View original record | -15- WF = work necessary to overcome friction of the engine, ft. lbs. per minute. WB = the measured brake power output of the engine, ft. lbs. per minute. (2) WE = WB + WF = WP WM = the measured work… | ||
| scan0220 | Technical analysis of 'complete' and 'normal' engine scavenging cycles with associated theoretical calculations. | ||
| View original record | -16- With complete scavenging (See Figure 25A) it was assumed that the overlap of exhaust and inlet valve opening was sufficient to allow the incoming fresh charge to force out all of the exhaust gas,… | ||
| scan0221 | Page of thermodynamic equations defining variables and calculations for work and scavenging. | ||
| View original record | -17- W_Ec = { 1 - (1/r)^(k-1) } x w_c x J = work in ft. lbs. represented by area 2-3-4-5-2, where: r = V_2 / V_1 k = 1.4 (=Exponent of adiabatic compression and expansion) J = 777.7 ft. lbs. per… | ||
| scan0222 | Analysis of engine performance, comparing actual engine results with theoretical cycles, particularly concerning supercharging and scavenging. | ||
| View original record | -18- The variations of brake horsepower, brake mean effective pressure, and air consumption with intake manifold pressure for the actual engine at 1,000 r.p.m. with both 4.25 and 5.55 to 1 compression… | ||
| scan0223 | Page discussing the power output of supercharged engines, considering factors like blower power, air temperature, and air-fuel ratios. | ||
| View original record | -19- It would then be necessary to calculate by equation (1) the power necessary to drive the blower, and to subtract this power from the total power previously calculated for the supercharged engine,… | ||
| scan0224 | Page detailing heat balance and the effects of supercharging on octane number requirements, with a data table. | ||
| View original record | -20- Heat Balance Over A Range Of Intake Manifold Pressure At 1000 R.P.M. The percentages of the heat supplied which were converted to work, absorbed by the cooling water, and dissipated in the… | ||
| scan0225 | Page detailing fuel octane requirements and the effects of supercharging on engine durability and spark plugs. | ||
| View original record | -21- The fuel octane number requirements for the 4.25 to 1 compression ratio supercharged engine were determined only at a carburettor air temperature of 170 degrees Fahrenheit. These data are… | ||
| scan0226 | Report page detailing the performance and maintenance requirements of various engine valves and bearings under test conditions. | ||
| View original record | -22- The chome-nickel steel intake valves supplied as standard equipment in the engine were used throughout the test without replacement. It was necessary to grind these valves after approx. 100 hours… | ||
| scan0227 | Request to design a scheme to adapt a Kestrel type supercharger to a Wraith II portable rig engine for experiments. | ||
| View original record | 600? To By/Ald. from Rm/Swdl. Rm/Swdl.1/MH.2.9.38. Will you please design a scheme to adapt a Kestrel type of Supercharger to our portable rig engine which is a Wraith II unit. This will be used for… | ||
| scan0228 | Request for an old Kestrel 2.S. type supercharger with reduction gear for experimental tests on chassis units. | ||
| View original record | 1171 To Sft/Mr.Smithdale. Rm/Swdl.13/MH.4.10.38. We are anxious to obtain an old supercharger (Kestrel 2.S.) type with the 10 to 1 reduction gear, for experimental tests on chassis units. Could you… | ||
| scan0229 | The Melbourne Engineering Co's two-stage roots blower supercharger. | ||
| View original record | R.R. 306. ST. 50966. 6/11/37. C.E. SWDL Poles 1141 EXPERIMENTAL DEPARTMENT REPORT REFERENCE:— Lr/Aln.10/GC. 5.10.38. Subject of Report:— Melbourne Engineering Co's Supercharger. General Conclusion:— A… | ||
| scan0230 | Inspection report on a two-stage roots blower supercharger from Melbourne Engineering Co. | ||
| View original record | Lr/Ain.10/GC.5.10.38. MELBOURNE ENGINEERING CO'S SUPERCHARGER. We called at the Standard Garage, Alfreton Rd., yesterday to inspect a supercharger sponsored by a Mr. Winterbottom of the above concern.… | ||
| scan0231 | Specifications and test details for a high-speed blower, discussing performance, weight, and potential applications. | ||
| View original record | - 2 - Bearings are of high speed ball type and seals are by means of labyrinths, nine altogether, each having three rings. We were told that with a gear of 1 1/3/1 on a 1087 cc engine a boost of 40-45… | ||
| scan0232 | Diagrammatic arrangement of the Melbourne Engineering Co's Supercharger. | ||
| View original record | MELBOURNE ENGINEERING Co's SUPERCHARGER ALN 70 CARB' CARB' DIAGRAMMATIC ARRANGEMENT 27-9-38 | ||
| scan0233 | The manufacture of shortage parts for an obsolete Kestrel supercharger. | ||
| View original record | 1171. To Mr.Vale from Rm/Swdl. c. Mr.Smithdale. Rm/Swdl.5/MH.8.10.38. Further to our memo Rm/Swdl.13/MH.4.10.38 regarding our request for an obsolete type of supercharger (Kestrel 2.S. type) for… | ||
| scan0234 | Parts list for a scheme to adapt a Kestrel supercharger to a Wraith 11. Rig Engine. | ||
| View original record | [Handwritten annotations at top] 1171? HPS [crossed out] c. Rm. [crossed out] c. Rm/Swdl [crossed out] BY/Ald.13/G.9.11.38. SECTION 6000. FLYWHEEL, CLUTCH AND KESTREL SUPERCHARGER. SECTION 5050.… | ||
| scan0235 | Parts list with quantities and production instructions, page 2. | ||
| View original record | - 2 - BY/Ald.13/G.9.11.38. G.83321 Universal Ring. 1 off. GB.4081 Joint Washer. 1 off. GB.4082 Oil Trough. 1 off. GB.690 Disc - Operating Shaft. 1 off. GB.2084 Oil Retaining Ring. 1 off. GB.2085… | ||
| scan0236 | Requesting the adaption of a Kestrel type supercharger to the Wraith II No.1 unit. | ||
| View original record | 8171 To HPS. from Rm/Swdl. Rm/Swdl.7/MH.15.11.38. WRAITH II NO.1. In regard to the memo By/Ald.13/G.9.11.38 for the adaption of a Kestrel type of Supercharger, will you please fit to the above unit… | ||
| scan0237 | Suggesting a 24-hour endurance test for a supercharged 'M' Series Bentley to counteract competitor publicity and requesting tests on a new air intake. | ||
| View original record | 1141 SECRET. HPS. from Rm. Rm7/R.1.12.38. Supercharger fitted to Bentley Rig Engine. By/Ald13/G.9.11.38. In order to counteract Lagonda publicity, it is suggested that we should run a 24 hour test at… | ||
| scan0238 | Letter to Smiths' Jacking Systems requesting improvements to a portable jack. | ||
| View original record | 1166 c. Les. Rm/Gry4/R. 8th August, 1939. Messrs. Smiths' Jacking Systems, Edgware Road, Cricklewood, LONDON. N.W.2. (For the attention of Mr. D.W. Sessions) Dear Sirs, When you were here the other… | ||
| scan0239 | Order for a jack to be sent to Sessions. | ||
| View original record | 1166 Les. from Rm/Gry. Rm/Gry5/R.8.8.39. O/No.52439. Herewith copy of a letter we have sent to Sessions. If you did not send him an order for this jack as a result of our conversation will you please… | ||
| scan0240 | Letter from Smith's Jacking Systems Ltd acknowledging receipt of suggestions for a new design. | ||
| View original record | 1166 SMITH'S JACKING SYSTEMS LTD TELEPHONE GLADSTONE 6671 & 6672 TELEGRAMS: TOGGLE, GOLD CABLEGRAMS: TOGGLE, LONDON JACKALL-D·W·S-STEVENSON JACKALL WORKS EDGWARE ROAD LONDON, N.W.2 SJS DIRECTORS A.… | ||
| scan0241 | Letter from Smith's Jacking Systems Ltd regarding the redesign of a Hydrolift jack for a heavier car. | ||
| View original record | 1166 SMITH'S JACKING SYSTEMS LTD TELEPHONE GLADSTONE 6671 & 6672 TELEGRAMS: TOGGLE.GOLD CABLEGRAMS: TOGGLE.LONDON JACKALL - D·W·S - STEVENSON JACKALL WORKS EDGWARE ROAD LONDON, N.W.2 DIRECTORS A.… | ||
| scan0242 | Letter from Smith's Jacking Systems Ltd regarding a redesigned Hydrolift jack blue print. | ||
| View original record | SMITH'S JACKING SYSTEMS LTD TELEPHONE GLADSTONE 6671 & 6672 TELEGRAMS: TOGGLE, GOLD CABLEGRAMS: TOGGLE, LONDON JACKALL-D·W·S-STEVENSON JACKALL WORKS EDGWARE ROAD LONDON. N.W.2 SJS DIRECTORS A. GORDON… | ||
| scan0243 | Blueprint of a Hydrolift component with cross-section and external views. | ||
| View original record | FULL 1.5" DIA. 25" MAXIMUM EXTENSION 15" THIS PRINT OR COPIES CONFIDENTIAL THE PROPERTY OF SMITH'S JACKING SYSTEMS LTD SMITH'S JACKING SYSTEMS LTD JACKALL WORKS, EDGWARE ROAD, N. W. 2. DESCRIPTION:… | ||
| scan0244 | Letter to Messrs. Smith's Jacking Systems Ltd. acknowledging receipt of a blueprint and delaying a response. | ||
| View original record | 1166 Rm/Gry.3/MH. 29th. August, 1939. Messrs. Smith's Jacking Systems Ltd., Edgware Road, Cricklewood, LONDON, N.W.2. For the attention of Mr. Donald Sessions. Dear Sirs, Thank you for your letter of… | ||
| scan0245 | Letter to Smith's Jacking Systems Ltd. regarding an experimental jack for heavier cars. | ||
| View original record | 1166 Rm/Gry.5/MH. 31st. August, 1939. Messrs. Smith's Jacking Systems Ltd., Edgware Road, LONDON, N.W.2. For the attention of Donald W.Sessions, Esq. Dear Sirs, Replying further to your letter of… | ||
| scan0246 | Letter from Smith's Jacking Systems Ltd regarding a special jack design for heavier cars. | ||
| View original record | SMITH'S JACKING SYSTEMS LTD TELEPHONE GLADSTONE 6671 & 6672 TELEGRAMS: TOGGLE, GOLD CABLEGRAMS: TOGGLE, LONDON JACKALL - D·W·S - STEVENSON DIRECTORS A. GORDON SMITH CHAIRMAN DONALD W. SESSIONS GEN.… | ||
| scan0247 | Requesting a quart tin of Smiths Jackall Fluid for topping up hand operated jacks. | ||
| View original record | 1166 To Les. c. to G/JWH. Rm/FD.18/JH.11.1.40. Will you please obtain a quart tin of Smiths Jackall Fluid for topping up hand operated jacks. Rm/FD. | ||
| scan0248 | Return of a faulty Smiths Hydraulic Jack to the manufacturer for repairs. | ||
| View original record | 1166 To Les. c. to D/BP. c. to Hd/FC. Rm/FD.4/JH.31.1.40. We are sending into the stores - 1 Smiths Hydraulic jack to be returned to the makers for repairs. Will you please deal with the makers about… | ||
| scan0249 | Letter to Smiths Jacking Systems Ltd. concerning issues with hand-operated hydraulic jacks on experimental cars. | ||
| View original record | 1166. Rm/FD.1/BA. February, 2nd. 1940. Messrs. Smiths Jacking Systems Ltd. Jackall Works, Edgware Road, LONDON.N.W.2. Dear Sirs, For the attention of Mr. Leeson. We are having trouble with some of the… | ||
| scan0250 | Commissioning a trunnion mounting for a jack to prevent it being twisted off. | ||
| View original record | 1166 To Ev. from Rm. Rm.8/MH.9.2.40. Donald Sessions is going to make us a trunnion mounting for the jack in order to prevent the jack neck being twisted off when the car is inadvertently jacked up… | ||
| scan0251 | Despatch of three hydraulic jacks to Messrs Smith's Jacking Systems, Ltd. for examination and modification. | ||
| View original record | 1166 To Hd/FC. Copies to:- D/BP. Les/FS. Rm/FD.4/ML.13.2.40. We are sending into the Stores 3 hydraulic jacks; will you please despatch these to Messrs Smith's Jacking Systems,Ltd., Edgeware Road,… | ||
| scan0252 | Sessions Portable Jacks and their suitability for front and rear bumper designs. | ||
| View original record | 1166 To Rm. from Ev. Ev.2/JH.24.2.40. re Sessions Portable Jacks. Rm.8/MH.9.2.40. Attached herewith is a print of PL.80 which shews the latest R.R. type front bumper, mounted close in to the wings. If… | ||
| scan0253 | Letter to Smith's Jacking Systems Ltd. concerning the design of a trunnion mounting for portable hydraulic jacks. | ||
| View original record | c. to Rm. c. to Rm/FD. 1166. Ev.15/JH. 14th. May, 1940. Messrs. Smith's Jacking Systems Ltd., Jackall Works, Edgware Road, LONDON.N.W.2. For the attention of D.Sessions Esq. Dear Sirs, re Portable… | ||
| scan0254 | Communication regarding modifications to a bumper, forging, and jack for the rear of a chassis. | ||
| View original record | SMITH/ECJ/EH. 15.10.40 Cont'd. bumper as shown on PL.70 modifying the horn of the forging to your requirements we can make suitable brackets to correspond for the rear. We have already a jack with the… | ||
| scan0255 | Letter from Smith's Jacking Systems Ltd. requesting blueprints for existing jack mountings to propose an improved scheme. | ||
| View original record | SMITH'S JACKING SYSTEMS LTD JACKALL-D.W.S-STEVENSON TELEPHONE GLADSTONE 6671 & 6672 TELEGRAMS: TOGGLE. GOLD CABLEGRAMS: TOGGLE. LONDON DIRECTORS A. GORDON SMITH CHAIRMAN DONALD W. SESSIONS GEN. MGR C.… | ||
| scan0256 | Letter from Smith's Jacking Systems Ltd regarding a trunnion scheme for a jack bracket. | ||
| View original record | Handwritten top left: Per /ML For filing Handwritten top center: 1166 Stamped mid left: EV.15/JH DWS/IKS SMITH'S JACKING SYSTEMS LTD JACKALL-D-W-S-STEVENSON TELEPHONE GLADSTONE 6671 & 6672 TELEGRAMS:… | ||
| scan0257 | Proposal from Smiths Jacking Systems for a hydraulic jack trunnion fixing. | ||
| View original record | To EV/JD. c.c. to Rm. c.c. to Rm/EAG. Handwritten: Jacking systems Handwritten: Myth Handwritten: 1166 Ev.1/JH.17.12.40. re Hydraulic Jack Trunnion Fixing. We have received from Messrs. Smiths Jacking… | ||
| scan0258 | Urgent need to acquire jacks and suggesting alternatives to those from Dunlops. | ||
| View original record | To: Roy from Rm/Wym. 1166 Rm/Wym.4/RH.28.7.4 In reply to your memo Roy/AES.18/MH. 25.7.41, and the accompanying letter from Messrs. Dunlops, with reference to the jacks requested in our memo… | ||