Rolls-Royce Archives
| Identifier | Entry | ||
| Scan001 | Letter from Champion & Co. enquiring about the test results for a Rockwell Vacuum Feed Tank. | ||
| View original record | Mr. Warwick EXP. Dept. X3575 RECEIVED 21 DEC 1920 TELEPHONE: LONDON WALL. 6480 CABLE ADDRESS: "MARCOTTY, LONDON." CHAMPION & Co. (C. H. CHAMPION.) Moorgate Station Chambers, London, E. C. 2. 20th… | ||
| Scan002 | Forwarding a letter from Alberto Chiesa of Milan regarding a patent vacuum feed system. | ||
| View original record | X3575 S/W. Bs18/CM8.3.21. X.4327 Handwritten: Hs is this of interest to you RY 9.3.21 We forward herewith letter received from Alberto Chiesa of Milan, which has reference to a patent vacuum feed… | ||
| Scan003 | Letter from an Italian representative offering a patent for a 'nipple' to improve vacuum fuel feed systems. | ||
| View original record | Packard MOTOR CAR COMPANY NEW YORK, N.Y. U.S.A. Rappresentante per l'Italia Alberto Chiesa MILANO 2nd march 1921 17 VIA BOCCACCIO TELEF. 13181 To THE ROLLS-ROYCE MOTOR CAR CO. 14/15 Conduit Street L O… | ||
| Scan004 | Description of a 'nipple' fixed to automobile motors in order to increase the depression in the intake manifold. | ||
| View original record | Packard MOTOR CAR COMPANY NEW YORK, N.Y., U.S.A. Rappresentante per l'Italia Alberto Chiesa MILANO 17 VIA BOCCACCIO TELEF. 13161 M.D. MAR RECEIVED DESCRIPTION OF A "NIPPLE" FIXED TO AUTOMOBIL MOTORS… | ||
| Scan005 | Typed explanation of a vacuum-based fuel feed and intake manifold system, page 2. | ||
| View original record | Packard MOTOR CAR COMPANY Foglio N° 2 The socket 9 is connected with the intake manifold and has a wider diameter than the small pipe 8 which has a very narrow one. Generally the cover 12 is shut,… | ||
| Scan006 | Schematic diagrams and a corresponding key in French for a vehicle fuel delivery system. | ||
| View original record | FIG. 1 FIG. 2 FIG. 3 FIG. 1. 1. Tuyau d'aspiration du moteur. 2. Moteur. 3. Carburateur. 4. Tubulure d'essence de l'élévateur d'essence au carburateur. 5. Élévateur d'essence. 6. Tubulure d'arrivée… | ||
| Scan007 | Letter from Rolls-Royce of America regarding the suitability of a Remington Carburetter Pump for the 'Goshawk' car. | ||
| View original record | X3575 Oy2 - G 211121 Nov. 21, 1921 Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Copies attached for Mr.F.H.Royce & Experimental Dept. Dear Sir:- Re: Remington Carburetter… | ||
| Scan008 | Sending a Weymann vacuum tank for comparison against the Autovac unit. | ||
| View original record | E. from Hs. X3593 Hs5/LG6.1.22. "WEYMANN" VACUUM TANK. X3593 X3579 [struck through] We are sending to you a vacuum tank made by Weymann of Paris. This is the same make as is used on the "Delage". The… | ||
| Scan009 | Instructing Stores to despatch a Weymann Vacuum Tank to a Mr. W.W. Day for examination at no charge. | ||
| View original record | X.3593 BP. from Hs. c. to Mr. Chatwin - Stores. c. to Da. Hs2/LG7.1.22. We are sending into the Stores for despatch to Mr. Day., W.W. - 1 Weymann Vacuum Tank. Will you please issue the necessary… | ||
| Scan010 | Goshawk 11 vacuum tank model, suggesting it is unnecessarily heavy and requesting comments on a lighter construction. | ||
| View original record | To Da. from Hs. c. to E. c. to BY. X3595 Hs2/LG12.1.22. GOSHAWK 11. VACUUM TANK. X3595 We are sending to you a model of the R-R Vacuum Tank made for Goshawk 11. We suggest that you will most probably… | ||
| Scan011 | Instructing the stores to despatch a vacuum tank to W.W. for examination at no charge. | ||
| View original record | X3595 BP. from Hs. c. to Stores. (Chat.) Hs3/LG12.1.22. A We are sending into the Stores for despatch to Da. W.W. - 1 Vacuum Tank. Will you kindly issue the necessary instructions to Stores. We are… | ||
| Scan012 | Examination of a sample vacuum feed tank, noting its poor mechanical condition and comparing it to the Autovac. | ||
| View original record | To Hs. from Da. X3593 Da2/M19.1.22. VACUUM FEED WAVE AND TANK X.3593. I have examined the specimen tank you sent us and discussed it with Mr. Royce, and he is of the opinion that we might try it. We… | ||
| Scan013 | Ordering and testing Weyman vacuum feed units for the Goshawk 11 engine, as recommended by Mr. Royce. | ||
| View original record | X3593 BY. from Hs. c, to Da. Hs3/LG30.1.22. VACUUM FEED - GOSHAWK 11. X3593 We are assuming that you are ordering some of the Vacuum units from the Weyman people for us to test on Goshawk 11. We have… | ||
| Scan014 | Goshawk II vacuum feed, detailing the ordering of units from Mr. Weyman of Paris and the in-house production of larger tanks. | ||
| View original record | Md. from BY. c. Hs. X3595 GOSHAWK II. VACUUM FEED. HY2-1/1.1.22. [STAMP TEXT: RECEIVED 1922] Roy obtained a sample Vacuum tank, made by Mr Weyman of Paris. I sent the tank in question into the… | ||
| Scan015 | From E. to Hs. regarding the return of a Weyman Exhaust Feed Tank with a request from Mr. Royce to test it on a Goshawk chassis. | ||
| View original record | To Hs. from E. X3593 E1/M2. 2. 22. WEYMAN EXHAUST FEED TANK. X. 3593 We are returning under separate cover the Weyman Exhaust Feed Tank. Mr. Royce would like you to have this tested on a Goshawk… | ||
| Scan016 | The Goshawk II engine's vacuum feed, forwarding a communication from Mr. Weymann of Paris. | ||
| View original record | [Handwritten notes at top]: Mr Wormald Mr Hives Mr Hancock Do you know anything of this before me please X3593 21/4/22 [Typed document]: EP. BY/Mtn2/H. 21. 4. 22. GOSHAWK II. VACUUM FEED.… | ||
| Scan017 | Letter from C. T. Weymann regarding the supply and fitting instructions for their 'Exhauster' device, including details of a new venturi tube modification. | ||
| View original record | Copy C. T. WEYMANN, 20, Rue Troyon, Paris. Paris, 13th April, 1922. In answer to your letter of the 5th inst, we hasten to send you the "Exhausters"which you have ordered. Should you have any… | ||
| Scan018 | Comparison of Vacuum Units from Weymann & Co. of Paris with English Autovacs for the Goshawk. | ||
| View original record | Hs. from ROY. /3693 ROY/Dnl1/HP3.7.22 We send you herewith 3 sets of Vacuum Units (no tanks) supplied by Messrs. Weymann & Co. of Paris. These are for comparison with the English Autovacs which we are… | ||
| Scan019 | Potential patent infringement issue regarding a Vacuum Feed Tank from the Grav-vac Syndicate. | ||
| View original record | (3575 ~~ from ROY. c. to Hs. ROY7/MG18.6.24 You will recollect last December, and early this year, we had some discussion with the Grav-vac Syndicate Limited, of Porthcawl, the firm who have produced… | ||
| Scan020 | Letter to Brine Kingston & Co. requesting information on the Kingston Oil-vac system. | ||
| View original record | X3575 Hs10/LG. 20th. Aug. 1925. Brine Kingston & Co., Kokomo, Indiana, U.S.A. Dear Sirs, Will you please send us complete information as regards the Kingston Oil-vac system. Thanking you in… | ||
| Scan021 | Letter from Byrne, Kingston & Co. explaining the advantages of their Kingston Oil-Vac System. | ||
| View original record | A35753 Byrne, Kingston & Co. MANUFACTURERS OF THE CELEBRATED KINGSTON CARBURETOR OIL VAC SYSTEMS - GOVERNORS Kokomo, Ind., U.S.A. GEO. KINGSTON, PRES. & MGR. C. T. BYRNE, VICE PRES. J. W. JOHNSON,… | ||
| Scan022 | Letter from carburettor manufacturer Byrne, Kingston & Co. regarding a visit to the Springfield plant. | ||
| View original record | Byrne, Kingston & Co. MANUFACTURERS OF THE CELEBRATED Kinsgton CARBURETOR OIL VAC SYSTEMS - GOVERNORS GEO. KINGSTON, PRES. & MGR. C. T. BYRNE, VICE PRES. J. W. JOHNSON, SECY. & TREAS. 2 Rolls-Royce,… | ||
| Scan023 | Proposal letter for the 'Clifford Rectifier', a device to prevent lubricating oil dilution in motor vehicles. | ||
| View original record | COLIN MACBETH, M.I.A.E. M.S.A.E. F.I.R.I. TELEPHONE: CENTRAL 2621. Rg [STAMP: RECEIVED SEP 19 1925] 67, NORWICH UNION CHAMBERS Corner of { CONGREVE STREET, EDMUND STREET, BIRMINGHAM. 18th September… | ||
| Scan024 | Letter to M. Rowledge enclosing a description of a Rectifier and offering a test instrument. | ||
| View original record | 18th September 1925. M. Rowledge, Esq. Sheet No.2. I enclose a description of the Rectifier as now made, and in order that your Company may test the device would be glad to arrange to supply a test… | ||
| Scan025 | The Clifford Rectifier for preventing the dilution of crankcase oil in motor vehicles. | ||
| View original record | THE CLIFFORD RECTIFIER For preventing dilution of Crank Case Oil in MOTOR VEHICLES. Protected all over the World. ~~~~~~~~~~~~~~~~~~~~~~~ Automobile Engineers are now seeking a solution of the… | ||
| Scan026 | Engine oil dilution and the function of the Clifford and Skinner oil rectifiers. | ||
| View original record | is formed in minute quantities during the cycle or motor operations and finds its way to the crank case. The amount of dilution varies with different cars. In some American cars it is advisable to… | ||
| Scan027 | Description of the operation, specifications, and testing of an automatic oil rectifier system. | ||
| View original record | Upon starting the motor the tube absorbs heat from the exhaust gases and the oil and the thermostat therein contained are quickly heated. Oil does not flow through the rectifier until the oil… | ||
| Scan028 | Installation directions for a Clifford Rectifier, including a diagram. | ||
| View original record | INSTALLATION DIRECTIONS CLIFFORD RECTIFIER. 1st. Insert rectifier tube through hole in manifold placing a ½” copper gaskett (⅞” spark plug gasket) at top and bottom of manifold. Clamp into position… | ||
| Scan029 | Issues and potential improvements for autovac fuel tanks, including suggestions from Mr. Royce. | ||
| View original record | To HS. from DA/Ev. c. to CJ. BJ. H. 43593 DA/EV1/M28.9.25. RE. AUTOVAC TANKS. X.3579 X.3593 X.4214 We have examined an autovac and notice that each time the autovac ejects its petrol into the… | ||
| Scan030 | Autopulse system as an alternative scheme to the Autovac. | ||
| View original record | To R. from Hs. +3575 Hs3/LG30.9.25. AUTOPULSE SYSTEM. ALTERNATIVE SCHEMES TO THE AUTOVAC. +3579 Attached is a pamphlet giving particulars of one alternative scheme to the Autovac. We should say that… | ||
| Scan031 | Tests comparing Autovac and Weyman fuel tanks. | ||
| View original record | R.R. 493a (50 M) (D.D. 91, 17-6-25) J.R.H. Expl. No. X3593 REF:Hs/2/LG1.10.25. EXPERIMENTAL REPORT. To DA/EV. from Hs. c. to CJ. H. c. to BJ. H. AUTOVAC TANKS. DA/EV1/M28.9.25. One of the early tests… | ||
| Scan032 | Letter from the American branch to the UK branch describing the Kingston Oil Rectifier. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. Y3575 Oy4-E-10725 October 7, 1925. Mr. E. W. Hives, Rolls-Royce, Ltd., Derby, England. Dear Mr. Hives: Re Kingston Oil Rectifier I am enclosing herewith… | ||
| Scan033 | Page 2 of a letter discussing an oil filtering and heating device. | ||
| View original record | Oy4-E-10725 -2- October 7, 1925. The oil comes to the upper tank through a heating pad on the exhaust pipe which heats it to about 200°F. In the upper tank it is subjected to vacuum, and every means… | ||
| Scan034 | Promotional leaflet for the Kingston Oil Aerator and Filter. | ||
| View original record | The KINGSTON OIL AERATOR and FILTER Prevents the Wear – Preserves the Pep – Prolongs the Life of any motor by constantly cleansing the lubricating oil of the harmful elements that quickly destroy… | ||
| Scan035 | Advertisement explaining the function and benefits of the Kingston Oil Aerator & Filter for motor engines. | ||
| View original record | YOU WANT quiet~powerful~economical operation of your motor! A continuous supply of clean, undiluted oil assured by the KINGSTON OIL AERATOR & FILTER will give you this result DIRTY, DILUTED OIL MAIN… | ||
| Scan036 | Vacuum tank operation chart showing the dumping and filling cycles. | ||
| View original record | Fig. 1: SHOWING RELATIVE LEVELS IMMEDIATELY AFTER THE FLOAT CLOSES THE VALVE, AT THE COMPLETION OF THE "DUMPING" CYCLE. Fig. 2: SHOWING RELATIVE LEVELS DURING THE "FILLING CYCLE" SHORTLY BEFORE THE… | ||
| Scan037 | Letter from the American branch to the UK branch detailing the features of the Kingston Oil Vac device. | ||
| View original record | X3575 ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. Oy1-E-10725 October 7th, 1925. Mr. E. W. Hives, Rolls-Royce, Ltd., Derby, England. Dear Mr. Hives: Re Kingston Oil Vac We have received your… | ||
| Scan038 | Technical discussion on oil pump systems, comparing Cadillac's approach and proposing a test of a Kingston tank. | ||
| View original record | Oy1-E-10725 -2- October 7th, 1925. out the oil pump (but not with intake vacuum). The oil pump could not I imagine be used with an Autovac or Stewart tank without infringing patents. Cadillac, who are… | ||
| Scan039 | Technical report discussing a fuel system's operation and the potential use of an oil pump for the Phantom engine. | ||
| View original record | Oy1-E-10725 -5- October 7th, 1925. bell around the float until it pushes back the fuel in leg J' of the syphon, the fuel therefore at this stage rises higher inside than outside the diving bell. When… | ||
| Scan040 | Letter discussing pump adoption, its use on other engines, and a proposed test on a Silver Ghost model. | ||
| View original record | Oy1-E-10725 -4- October 7, 1925. If you would send us a sketch of an available spindle end however I will get them to submit a pump. They admit that the thing which holds back the device from general… | ||
| Scan041 | Cablegram from Springfield, Mass, detailing a fix for an Autovac misfiring issue. | ||
| View original record | Form 2B. (7. 25.) X3831 COMMERCIAL CABLES 75, EDMUND ST., BIRMINGHAM. CENTRAL 2084. STAMP: THE COMMERCIAL CABLE COY. TEL. No. CENTRAL 2084 30 NOV. 1925 75, EDMUND ST. BIRMINGHAM The following… | ||
| Scan042 | Letter detailing the requirements for a special Stewart Vacuum Tank for the Phantom dashboard. | ||
| View original record | ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. (S831) Oy5-E-121125 December 11, 1925. Mr. E. W. Hives, Rolls-Royce, Ltd., Derby, England. Re Stewart Vacuum Tank Dear Mr. Hives: We have had a further… | ||
| Scan043 | Comparing the Stewart Vacuum Feed system against the standard Autovac on a Phantom engine. | ||
| View original record | R.R. 493a (50 M) (D.D. 31. 12-6-25) J.H.B EXPERIMENTAL REPORT. Expl. No. X3831 REF: Hs/AJL/LG14.12.25 To R. from Hs/AJL c. to CJ. BJ. c. to RG. E. c. to DA. OY. c. to BY. Wor. STEWART VACUUM FEED.… | ||
| Scan044 | The suction pipe to the induction system, comparing Stewart and Autovac components. | ||
| View original record | R.R. 483A (50 M) (D.D. 91. 12-6-25) J.H.D. EXPERIMENTAL REPORT. -2- Expl. No. REF Hs/Rm/LG14.12.25 suction pipe to the induction system. This together with the fact that the Stewart tank float has a… | ||
| Scan045 | Blueprint diagram of a Stewart Vacuum Tank. | ||
| View original record | STEWART VACUUM TANK. SUCTION RESTRICTION TO SUCTION AIR TWO SPRINGS USED. 1 7/8" STROKE FLOAT DIA = 4 1/2" FLOAT CHAMBER DIAM = 3.575" STROKE OF FLOAT = .875" A.T.L. | ||
| Scan046 | Reverse of a document showing a 'Print Room' stamp with a date. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM, 15 DEC 1925 DERBY | ||
| Scan047 | Letter discussing the shipment and testing of a Kingston Oil-Vac Tank and alternative suction devices. | ||
| View original record | X3575? ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. OyS-E-121525 December 15, 1925. Mr. E. W. Hives, Rolls-Royce, Ltd., Derby, England. Re Kingston Oil Vac and Oil Aerator Dear Hives: We are… | ||
| Scan048 | Letter discussing the Stewart tank, a new Oil Aerator, and a bypass oil filter. | ||
| View original record | Oy8-E-121525 -2- December 15, 1925. The delivery air should preferably be blown into some sort of trap, but this is a refinement. If you have tested the Stewart tank and had results equal to ours I… | ||
| Scan049 | Blueprint layout for an oil pump with cross-section and plan views. | ||
| View original record | OIL TO FLOW THRU CLEARANCE OF TEETH SHIM TO BRING PUMP IN CORRECT LOCATION OUTLET FROM PUMP REAR EDGE OF FAN BLADE SUCTION LINE TO VACUUM TANK TO OIL SUPPLY BYRNE KINGSTON & Co., KOKOMO, IND. LAYOUT… | ||
| Scan050 | Outcome of a patent action involving The Grav-Tac Syndicate Ltd and their 'Grav-Vac' apparatus. | ||
| View original record | BT. from ROY. c. to Hs. c. to Rr. X3575 ROY1/MG17.12.25 The Grav-Tac Syndicate Ltd, of Porthcawl ---------------------------------------- You will recollect this Syndicate originally submitted an… | ||
| Scan051 | Letter from Maurice Olley of Rolls-Royce of America to E. W. Hives in Derby, acknowledging receipt of a memo regarding the Stewart Vacuum Feed. | ||
| View original record | Y3831 ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. Oy6-E-122825 December 28, 1925. Mr. E. W. Hives, Rolls-Royce, Ltd., Derby, England. Dear Mr. Hives: Thank you for your memo on the Stewart Vacuum… | ||
| Scan052 | Comparing the Stewart vacuum feed system with the Autovac system. | ||
| View original record | Y3831 To EP. from Hs. c. to BY. Hs5/LG7.1.26. STEWART VACUUM FEED. OY4/E122225. The Stewart vacuum feed has already been reported upon by us in our Hs/AJL/LG14.12.25. The reason why the Stewart vacuum… | ||
| Scan053 | Letter from Colin Macbeth detailing the fitting instructions for a sample Rectifier. | ||
| View original record | COLIN MACBETH, M.I.A.E. M.S.A.E. F.I.R.I. TELEPHONE: CENTRAL 2621. X3575 67, NORWICH UNION CHAMBERS, Corner of { CONGREVE STREET, EDMUND STREET, BIRMINGHAM. 2nd. February. 1926 Messrs Rolls Royce Ltd.… | ||
| Scan054 | Letter accompanying a sketch, detailing the correct fitting of an oil supply pipe to ensure the thermostat remains submerged. | ||
| View original record | 2. I enclose sketch showing the way in which the oil supply pipe should be fitted in order to ensure that at all times even when the engine has been standing for a long period the thermostat is… | ||
| Scan055 | Hand-drawn diagram of a Clifford Rectifier oil supply pipe arrangement. | ||
| View original record | Y3575 Clifford Rectifier - OIL SUPPLY PIPE TURNED UP TO ENSURE THERMOSTAT BEING ALWAYS SUBMERGED - Copt to Sunbeam Co Ltd c T.H.R. Amacklen 2/2/26 | ||
| Scan056 | Description and list of advantages for a double-acting autovac tank model originating from Germany. | ||
| View original record | X.3575 R. from E. c. to CJ. c. to DA. c. to Hs. E1/M12.3.26. DOUBLE ACTING AUTOVAC. We have received from some English agents a patent specification and model of a double acting autovac tank… | ||
| Scan057 | Potential improvements to the autovac fuel supply system and the sending of a model to Derby for testing. | ||
| View original record | contd :- -2- individually, half in volume for the same rate of fuel feed, with considerably diminished disturbing effect on the running of the engine. (2) The petrol supply is led in at the bottom of… | ||
| Scan058 | Forwarding of a double acting autovac for testing on a car. | ||
| View original record | To Hs. from E. c. to CJ. X.3575 E2/M23.3.26. RE. DOUBLE ACTING AUTOVAC. We are forwarding to you tomorrow the double acting autovac described in our memo. E1/M12.3.26. We think it will be worth while… | ||
| Scan059 | Rejecting the 'AUTOVAC - BRENNSTOFF DOPPEL SAUGER' scheme. | ||
| View original record | X. 3575 E. ) FROM R. To Hs. ) LE CANADEL. RG. ) c. to CJ. DA. R3/M24.3.26. RE. AUTOVAC - BRENNSTOFF DOPPEL SAUGER. To me this scheme is not so good as the present standard, for many reasons. (1) It… | ||
| Scan060 | Requesting the return of a model of a double autovac. | ||
| View original record | X.3575 To Hs. from E. E5/M15.4.26. RE. DOUBLE AUTOVAC. X.3578. We attach herewith a copy of our letter to Mr. Charles H. Bowser, Municipal Insurance House, 26a Finsbury Sq., London E.C.2. Would you… | ||
| Scan061 | Letter rejecting the 'double autovac' model and returning it with its patent specification. | ||
| View original record | c. to BJ. c. to HS. "ELMSTEAD", WEST WITTERING, CHICHESTER. 15th. April 1926. Charles H. Bowser Esq., Municipal Insurance House, 26a Finsbury Sq., London E.C.2. Dear Sirs, RE. DOUBLE AUTOVAC. In reply… | ||
| Scan062 | The return of an inspected Autovac tank to its owner, Charles H. Bowser. | ||
| View original record | To BP. from Hs. c. to Mt. c. to E. X.3575 Hs4/LG16.4.26. RE. DOUBLE AUTOVAC. We are sending into the Stores :- 1 Autovac Tank. Will you please have this returned to :- Charles H. Bowser, Municipal… | ||
| Scan063 | Request to arrange for tubing and a petrol tap for testing an electric auto-pulse carburetter feed petrol pump. | ||
| View original record | To HHC. from EFC. X 3575 EFC11/T19.6.26. TUBING ETC. FOR TEST OF ELECTRIC AUTO PULSE CARBURETTER FEED PETROL PUMP. Will you please arrange for us tubing and petrol tap in accordance with the attached… | ||
| Scan064 | Comparison report on the efficiency of the Grav-Vac vacuum petrol feed tank against the Autovac system, concluding it to be inferior. | ||
| View original record | X3575 To R. from Hs/AJL. c. to BJ. Wor. c. to RG. E. c. to DA. EY. Hs/AJL1/LG30.3.27 GRAV-VAC PETROL FEED. X3579 Attached are curves shewing the efficiency of the Grav-Vac vacuum petrol feed tank as… | ||
| Scan065 | Graph comparing Autovac and Grav-Vac petrol feed systems at various engine speeds and throttle settings for a 20 H.P engine. | ||
| View original record | AUTOVAC AND GRAV-VAC PETROL FEED. TESTS CARRIED OUT ON A 20H.P ENGINE WITH STANDARD CARBURETTER AND INDUCTION PIPE. FUEL RAISED 32" THRO A PLAIN PIPE .250 DIAM 6FT LONG. TESTS AT FULL AND HALF… | ||
| Scan066 | Blank document page with a purple ink 'Print Room' stamp in the bottom right corner. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM. 1 APR 1927 | ||
| Scan067 | Advising that the Grav-Vac Syndicate will be submitting a modified apparatus to overcome previously experienced difficulties. | ||
| View original record | Hs. from ROY. X3575 ROY8/MG25.4.27 The Grav-Vac Syndicate advise that in about a fortnight's time they will be submitting a modified apparatus, which they believe will overcome the difficulties you… | ||
| Scan068 | Letter discussing Cadillac's adoption of a vacuum pump for their fuel feed system and a wider trend away from using intake vacuum for accessories. | ||
| View original record | S/W HS X3575 Oy10-E-91627 September 16, 1927. Mr. F. H. Royce, Rolls-Royce Ltd., London, England (Copy for attention of Mr.Hives " " " " Mr.Haldenby) Dear Sir: re Vacuum Feed We wish to draw your… | ||
| Scan069 | Recommendation to add a 30 cubic inch reservoir between the vacuum pump and the vacuum tank. | ||
| View original record | -2- It would appear that a reservoir of say 30 cubic inches between the vacuum pump and the vacuum tank, would improve the operation of the system under conditions when the intake vacuum was low.… | ||
| Scan070 | Technical drawing of a Cadillac pressure feed pump and a valveless vacuum pump. | ||
| View original record | CADILLAC PRESSURE FEED PUMP DELIVERY VALVE ONLY NECESSARY FOR 'SEALING' TANK WHEN CAR IS STANDING INLET VALVELESS VACUUM PUMP VACUUM TANK RESERVOIR DISCHARGE TO INTAKE PIPE DRAWING NO. SK105 SEE ALSO… | ||
| Scan071 | Letter to RR America Inc. concerning a report on Vacuum Feed and the use of an engine-driven vacuum pump. | ||
| View original record | X3831 Expl: Dept: Derby. Hs4/LG19.10.27. RR. America Inc., Springfield, Mass. X3579 X3503 for USA Reports Dear Mr. Olley. Attached herewith is a report on Vacuum Feed. We expect very shortly to be… | ||
| Scan072 | Tests on a vacuum feed system, specifically concerning engine idling and cylinder performance. | ||
| View original record | Hs/AJLl/LG19.10.27. VACUUM FEED. With reference to OY2/R/92727. We have carried out tests to investigate the points raised in this memo. (1) TESTS WITH ENGINE IDLING (car stationary). The suction… | ||
| Scan073 | Road tests analyzing engine performance issues related to idling, mixture richness, and vacuum connections. | ||
| View original record | contd :- -2- to upset their even running. Nos. 4, 5 and 6 cyls. only are affected. (b) Vacuum line connected to the centre of the induction pipe. All 6 cyls. are upset in this case. The engine will… | ||
| Scan074 | Continuation page of a document condemning a permanent restriction in a piston valve due to its inefficiency in the vacuum system. | ||
| View original record | Contd :- -3- piston valve. We condemn the permanent restriction owing to the very great drop it necessitates in the efficiency of the vacuum system. Hs/A.J.Lidsey. | ||
| Scan075 | Westinghouse Vacuum Booster (Dewandre System) and concerns regarding its installation on cars by outside agencies. | ||
| View original record | OY2.R.6.8.28 Mr Olived X3575 June 8th, 1928. This may be of interest to you AC TO: Mr. Beaver cc - Mr. Nadin ✓ Mr. Ainsworth Mr. Burton FROM: Mr. Olley Mr. Caswell BRAKES Re Westinghouse Vacuum… | ||
| Scan076 | Trial and function of a Stewart-Warner 'Booster' and vacuum pump for fuel feed systems. | ||
| View original record | X 3575 OY9.R.6.25.28 June 25th, 1928. TO: Mr. Ainsworth Mr. Knapton Mr. Nadin (England) cc - Mr. Ross Mr. Hives(England) Mr. Darling Mr. Soutter FROM: Mr. Olley RE FUEL FEED - SECTION 7140… | ||
| Scan077 | The functionality and installation of a standard A.C. vacuum fuel pump. | ||
| View original record | - 2 - VACUUM PUMP This fits the standard A.C. fuel pump mounting and cam. We shall send it to England as we understand they are trying the A.C. pump. The use of a vacuum pump with the ordinary vacuum… | ||
| Scan078 | Describing the construction and operation of a Grav-Vac vacuum petrol feed tank, comparing it to the Autovac. | ||
| View original record | To R. from Hs/AJL. c. to BJ. WoR. c. to E. DA. c. to BY. X3575 Hs/AJL/LG26.6.28 Maxxxk GRAV-VAC VACUUM FEED TANK. The attached sketch shows the construction of the latest Grav-vac petrol feed tank.… | ||
| Scan079 | Comparison of the performance and limitations between a Grav-vac and an Autovac fuel delivery system. | ||
| View original record | contd :- -2- The reason for this is that the Grav-vac draws in 80 cc's of petrol per cycle as against 42 cc's in the Autovac. The Autovac can be and has been made to increase its delivery by using a… | ||
| Scan080 | Graph comparing petrol delivery at full throttle for Autovac and Grav-vac fuel systems on a 40/50HP engine. | ||
| View original record | INDUCTION PIPE DEPRESSION (INS. MERCURY) PETROL DELIVERY AT FULL THROTTLE. AUTOVAC AND GRAV-VAC 40/50HP ENGINE (R.H.25) PETROL RAISED 32". PETROL DELIVERY (PTS/HR) ENGINE R.P.M. AUTOVAC: -- --… | ||
| Scan081 | Blank document page with a red ink stamp from the Derby office. | ||
| View original record | LIMITED PRINT ROOM, 23 JUN 1928 DERBY. | ||
| Scan082 | Graph comparing petrol delivery for Autovac and Grav-vac systems against induction pipe depression. | ||
| View original record | Y-Axis: PETROL DELIVERY (PTS/HR) X-Axis: INDUCTION PIPE DEPRESSION (INS MERCURY) Title Box: PETROL DELIVERY AT 1000RPM. AUTOVAC AND GRAV-VAC. PETROL RAISED 32". THROTTLING CURVE ON M/S ENGINE… | ||
| Scan083 | Blank page with a red 'PRINT ROOM, DERBY' stamp. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM, 23 JUN 1928 DERBY. | ||
| Scan084 | Blueprint diagram showing a cutaway view of a Grav-Vac Fuel Tank with labelled components. | ||
| View original record | GRAV-VAC FUEL TANK SUCTION PETROL INLET FILTER AIR RELEASE VALVE SUCTION VALVE (Shown Open) BELL CYLINDER MAXm PETROL HEIGHT IN BELL CYLINDER INNER VACUUM CHAMBER MECHANISM CONTROLLING RISE AND FALL… | ||
| Scan085 | Mostly blank document page featuring a red rectangular date stamp. | ||
| View original record | ROLLS-ROYCE, LIMITED ...T ROOM, 23 JUN 1928 | ||
| Scan086 | The testing of a 'Grav-vac' vacuum petrol feed tank, detailing performance issues with its valve mechanism compared to the standard Autovac. | ||
| View original record | 43575 To ROY. from Hs/AJL. Hs/AJLL/LG10.7.28. GRAV-VAC PETROL FEED. 43575 43579 Attached is a copy of our report on the Crav-vac vacuum feed tank submitted to us for test purposes. The tank was… | ||
| Scan087 | Required alterations to a valve mechanism and an offer to test corrected samples. | ||
| View original record | contd :- -2- It should be possible for the valve mechanism to be altered so that it is not operated directly from the bell cylinder; but indirectly by a spring loaded toggling mechanism (as in the… | ||
| Scan088 | Report comparing the Grav-vac vacuum feed tank with the Autovac, detailing operational principles and faults. | ||
| View original record | copy. To R. from Hs/AJL. c. to BJ. Wor. c. to E. DA. c. to BY. Hs/AJL1/LC26.6.28. GRAV-VAC VACUUM FEED TANK. The attached sketch shews the construction of the latest Grav-vac petrol feed tank. Instead… | ||
| Scan089 | Letter from the American branch regarding a Stewart Warner vacuum pump to replace the AC fuel pump. | ||
| View original record | #3755 X3831 ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. OY8.R.10.29.28 October 29th, 1928. Mr. Robotham, Rolls Royce Ltd., Derby, England. Dear Mr. Robotham: RE FUEL FEED I have been meaning for… | ||
| Scan090 | Blueprint for a vacuum pump installation with a straight lever. | ||
| View original record | [ "IN-259-B", "3/2-R", "30°", "2 HOLES .328 DIA.", "2.625", "1.238", ".656", ".010 GASKET", "2.375", "FACE OF MOUNTING PAD", "¢ OF CAM SHAFT", "1.625", ".906", ".187 +.003 -.003 ECCENTRICITY",… | ||
| Scan091 | Technical drawing of a vacuum pump bent lever installation. | ||
| View original record | IN-259-A 2 HOLES .328 DIA. 3 1/2-R 30º 2.625 21/32 .010 GASKET .828 2.187 FACE OF MOUNTING PAD 1.625 .156 +.008 -.003 ECCENTRICITY CAM SHAFT 1.500 ANY PATENTABLE INVENTION IN THE CONSTRUCTION WHICH IS… | ||
| Scan092 | Letter from the American branch to Derby discussing new fuel system developments by St. Warner. | ||
| View original record | X-3575 ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. OY1- February 11th, 1929. Mr. Robotham, Rolls Royce Ltd., Derby, England. My dear Mr. Robotham: Am sure this will interest you and Hs. too I… | ||
| Scan093 | Letter discussing the pros and cons of various fuel pump and delivery systems. | ||
| View original record | - 2 - They admit this scheme is in its infancy, but consider that eventually all cars will have something like it, because it has qualities of supplying a true gas to the engine which any carburetter… | ||
| Scan094 | Letter from Rolls Royce of America discussing developments in fuel feed systems, specifically boosters and a new vacuum tank. | ||
| View original record | RECEIVED 26 FEB 1929 X 3757? AO OY3- H February 11th, 1929. Mr. R.W.H. Bailey, Rolls Royce Ltd., Derby, England. cc - Mr. Hives London File Dear Mr. Bailey: FUEL FEED - SECTION 7140 Further to OY11 of… | ||
| Scan095 | Letter discussing fuel feed systems, including vacuum pumps and boosters. | ||
| View original record | C O P Y February 5th, 1929. Mr. R.W.H. Bailey, Rolls Royce Ltd., Derby, England. Dear Mr. Bailey: FUEL FEED - SECTION 7140 Thank you for yours of January 22nd (By4). Vacuum Pump. Does it not seem as… | ||
| Scan096 | Page 2 of a letter from Maurice Olley discussing vacuum levels, a booster test, and an intake manifold leak. | ||
| View original record | C O P Y - 2 - (3) They increase the vacuum at low speed full throttle about 30-40%. We do not so far find that the drop in vacuum at high speeds with the booster is any disadvantage, perhaps because… | ||
| Scan097 | Letter regarding the performance of a vacuum booster on Chassis 123-RP and a recommendation for its standard fitment. | ||
| View original record | Los Angeles, California, January 30, 1929. C O P Y RE: Vacuum Booster for Chassis 123-RP Archibald. We have recently received a complaint about the above numbered car starving for gasoline on mountain… | ||
| Scan098 | Performance characteristics graph of a Stewart-Warner vacuum tank and various boosters. | ||
| View original record | VACUUM TANK & BOOSTER CHARACTERISTICS 334 & 396 KP STANDARD STEWART-WARNER TANK WITH VARIOUS BOOSTERS VS KINGSTON TANK & BOOSTER AS USED ON CHRYSLER AXES: Y-AXIS (LEFT): VACUUM - INCHES OF WATER… | ||
| Scan099 | Complaints from the U.S.A. regarding loose wire wheel hubs and potential manufacturing solutions. | ||
| View original record | X3580 To BY. From R. c. to Hs. c. to Da. c. to OY. c. to Wor. R5/M13.12.21. RE WIRE WHEEL HUBS - 40/50s and others. X.3580 EY2/P9.12.21. Unless U.S.A. can shew that we are neglecting their complaint… | ||
| Scan100 | Choice between R.W. (Rudge-Whitworth) and Dunlop wire wheels for the Goshawk and 40/50 models. | ||
| View original record | X/3580 To B.J. & Roy. from R.. c. to Hs. Da. E. BY. R1/M6. 7.22. RE. WIRE WHEELS X.4050. X.3599. X3580 It is difficult at present to give a final decision as to whether the R.W. or Dunlop wheels… | ||
| Scan101 | Relaying a suggestion from Australia to fit thrust races to wheels to combat side strain from rutted roads. | ||
| View original record | Hs. C.c. to BY. X3580 EP/Thn3/H8.9.22. FR Re. Suggestion from Pt. Australia. Pt. has written to us with regard to slackness of bearings in the front hubs, and the following is an extract of his memo.… | ||
| Scan102 | Querying the comparative weights of Dunlop and Rudge-Whitworth front axle hub components for the New Phantom. | ||
| View original record | To Hs. from DA. Y3580 DA1/M19.9.25. NEW PHANTOM. X.3580 X.8840 X.8420 X.421 Referring to the list of comparative weights on the front axle you supplied me with. I do not fully understand the last few… | ||
| Scan103 | Proposal for reducing the width of standard wire wheels for the Phantom model by modifying artillery wheel hubs. | ||
| View original record | BY. from DA. c. to BJ. Hs. X3580 DA1/M1.10.27. X.421 X.8810 X.4586 X.3580 NARROWER WIRE WHEELS - PHANTOM. Herewith we send N.sch. 2477 shewing a proposal for reducing the width of the standard wire… | ||
| Scan104 | Proposed narrower wire wheels for the 20 HP chassis, including alterations to the hub design. | ||
| View original record | BY. from DA. c. to BJ. Hs. X3580 DA2/M8.10.27. 20 HP. WIRE WHEELS. X.3580 X.4586 X.5810 We send herewith N.sch.2478 shewing the proposed narrower wire wheels for use on the 20 HP. chassis. It will be… | ||
| Scan105 | Standardisation of chassis parts, specifically for shorter and lighter wheels and hubs to improve the design. | ||
| View original record | RR 755 REVISED (10H) (DE 649 9-12-26) 5M. 2/1197. X2580 COMPLETED 2.7.28 STANDARDISATION of CHASSIS PARTS. Date 2.5.28 Description of Parts. WHEELS & HUBS - SHORTER & LIGHTER. X No. 7810 Drawing No.… | ||
| Scan106 | Standardisation form for a new chassis part, detailing fitting, testing, and cost implications. | ||
| View original record | STANDARDISATION of CHASSIS PARTS Description of Part: (1) The number of the first chassis on which the new part will be fitted. G.2.B series (2) Date when the chassis will be handed to test. 12.11.23… | ||
| Scan107 | Modifying the wording of the label for Bentley wheel hubs following suggestions from the Experimental Department. | ||
| View original record | c. to Hs. X3580 BY/NW3/MB6.2.34. Re BENTLEY WHEEL HUBS. Further to our BY/NW1/MB10.1.34; as the result of suggestions and recommendations from the Experimental Dept. in connection with the Bentley… | ||
| Scan108 | Instructions for the maintenance and tightening of centre-lock detachable wire wheels. | ||
| View original record | CENTRE-LOCK DETACHABLE WIRE WHEELS. IMPORTANT. On no account run with a hub cap untightened as this will cause irreparable damage to hub. To enable caps to be thoroughly tightened with spanner and… | ||
| Scan109 | Request to make two adaptors for Phantom II hubs to determine the centre of gravity of complete cars. | ||
| View original record | RHC. X 3580 Hs/Les.6/KW.4.4.34. Will you please make 2 adaptors to fit on Phantom II hubs in order to enable us to lift a complete car through a large angle. This is in order to find the centres of… | ||