Rolls-Royce Archives
| Identifier | Entry | ||
| scan0001 | Letter from Eaton Manufacturing Company regarding a price increase for an intake valve gear unit due to a non-standard modification. | ||
| View original record | PLANTS: CLEVELAND DETROIT SAGINAW MARSHALL BATTLE CREEK JACKSON VASSAR MASSILLON 1360. EATON MANUFACTURING COMPANY CLEVELAND, OHIO EATON AXLES EATON BUMPERS EATON LEAF SPRINGS EATON COIL SPRINGS RICH… | ||
| scan0002 | Letter to a customer advising to hold off ordering hydraulic tappets due to increased cost and future improvements. | ||
| View original record | 1360 Rm9/R. 4th January, 1939. J.O. Eaton, Esq., Jr., 14, Stanford Court, Cornwall Gardens, LONDON. S.W.7. Dear Mr. Eaton, I think in view of the increased cost you had better hold off ordering those… | ||
| scan0003 | Letter from The Tempered Spring Company Limited regarding the dispatch of 36 valve springs and a deviation from drawing specifications. | ||
| View original record | 1360 ALL COMMUNICATIONS SHOULD BE ADDRESSED TO THE COMPANY AND NOT TO INDIVIDUALS THE TEMPERED SPRING COMPANY LIMITED MANAGING DIRECTOR: S. J. YOUNG M.INST.C.E. Springs & Presswork BURTON WEIR WORKS… | ||
| scan0004 | Letter from Eaton Manufacturing Company confirming a supply agreement and requesting an order for samples. | ||
| View original record | PLANTS: CLEVELAND DETROIT SAGINAW MARSHALL BATTLE CREEK JACKSON VASSAR MASSILLON 1360 EATON MANUFACTURING COMPANY CLEVELAND, OHIO EATON AXLES EATON BUMPERS EATON LEAF SPRINGS EATON COIL SPRINGS RICH… | ||
| scan0005 | Requesting an order to be placed with the Eaton Manufacturing Co. for one dozen hydraulic tappet lifters. | ||
| View original record | 1360 O.O. from Rm. c. G/JWH. Rm/R.10.1.39. Will you please pass an order to the Eaton Manufacturing Co., Cleveland, Ohio, for one dozen hydraulic tappet lifters to drawing T-3463A and T-3464-A at a… | ||
| scan0006 | Modification to improve lubrication on the B.60 and B.80 valve gear. | ||
| View original record | 1360 also 10HH To HPS. from Rm/Swdl. c. Da/Jnr. c. Da/MGS. c. By/CS. Rm/Swdl.1/MH.23.1.39. VALVE GEAR LUBRICATION B.60 & B.80. We have had scanty lubrication both to the push rods and the valve tips… | ||
| scan0007 | Requesting an order for eight valve seats from the British Piston Ring Co. | ||
| View original record | 6 1360 To Roy. c. to G/JWH. Rm/Ed.8/JH.24.1.39. Will you please order eight valve seats to EXS.1369 from the British Piston Ring Co. as per attached letter. Rm/Ed. | ||
| scan0008 | Letter to The British Piston Ring Co. Ltd. requesting a supply of eight valve seats in Brickromium. | ||
| View original record | EXPERIMENTAL DEPARTMENT. Rn/Ed.7/JH. 24th. January, 1939. The British Piston Ring Co.Ltd., Holbrook Lane, COVENTRY. For the attention of Mr. Trigger. Dear Sirs, We beg to acknowledge yours of the 17th… | ||
| scan0009 | Adoption of Magnaflux testing for valve springs. | ||
| View original record | 1360 To By. from Rm. c. Cgh/EM. Rm.4/MH.8.2.39. We see that the Americans are now using "Magnaflux" testing of valve springs. This seems to us to be an excellent way of detecting faults, and we are… | ||
| scan0010 | Proposing a test on an engine fitted with double valve springs. | ||
| View original record | 1360 To Rm/Swdl. from Rm. c. Rm/FD. Rm.5/MH.8.2.39. DOUBLE VALVE SPRINGS. We should like to arrange a test of an engine fitted with double valve springs to see if when a spring breaks the customer… | ||
| scan0011 | Confirming the acquisition of a Metropolitan Vickers Magnetic Testing Machine for Magnaflux testing of valve springs. | ||
| View original record | 1360. c. Rm. Cgh/EM.3/J.10.2.39. MAGNAFLUX TESTING OF VALVE SPRINGS. With reference to Rm.4/MH.8.2.39 and confirming our telephone conversation with Rm. yesterday, we have to advise you that we have… | ||
| scan0012 | Letter from Wilcox-Rich confirming the shipment of hydraulic lifter unit samples. | ||
| View original record | WILCOX-RICH DIVISION OF EATON MANUFACTURING COMPANY 9771 FRENCH ROAD DETROIT, MICHIGAN PRODUCTS RICH VALVES VALVE TAPPETS VALVE SEAT RINGS VALVE-A-MATIC HYDRAULIC LIFTERS PLANTS SAGINAW MARSHALL… | ||
| scan0013 | Letter from a supplier regarding notes on helical springs and requesting to see a shot-blasted valve spring. | ||
| View original record | JOHNSONS CADURO JOHNSONS Crapo GALVANISED WIRE NON-FLAKING NON-PEELING RICHARD JOHNSON & NEPHEW LIMITED R J&N Ld Founded 1773 IRON . STEEL . COPPER BRONZE . ALUMINIUM CADMIUM - COPPER WIRE DRAWERS &… | ||
| scan0014 | Letter from Associated Equipment Co Ltd regarding salt-cooled valves and potential patent infringements. | ||
| View original record | THE ASSOCIATED EQUIPMENT CO LTD TELEPHONE: SOUTHALL 2424 (17 LINES). TELEGRAMS: "VANGASTOW PHONE SOUTHALL" YOUR REF. OUR REF. C.E./GD. 27th February, 1939. W. A. Robotham Esq., Chief Experimental Car… | ||
| scan0015 | Technical drawing of an exhaust valve. | ||
| View original record | THE ARTICLE SHOWN HEREUNDER IS THE SUBJECT OF CONTRACT : SUPPLIERS SHOULD THEREFORE REFER ALL ENQUIRIES FOR SAME FROM OTHER SOURCES TO A.E.C. SOUTHALL DRAWING NOT TO BE SCALED. ALL GOODS MUST BEAR OUR… | ||
| scan0016 | Letter regarding the unavailability and future forwarding of shot-blasted valve springs. | ||
| View original record | 1360 Rm/SWdl 8/ER Experimental Dept, Rolls Royce, Ltd., DERBY. 28.2.39. Mr R.A.C. Johnson, Johnson & Nephew Ltd., Bradford Iron Works, Forge Lane, Manchester 11. Dear Sir, In regard to your letter of… | ||
| scan0017 | Dozen shot-blasted springs (EB 3256) with spares for a trial. | ||
| View original record | 1360 To CGH/EM. Rm/Swdl 8/ER 28.2.39 We should be obliged if you could get a dozen springs (EB 3256) with several spares, shot-blasted for our trial. Rm/Swdl. | ||
| scan0018 | Letter to Associated Equipment Co. Ltd. regarding the patent rights for salt-filled valves and a potential patent extension. | ||
| View original record | 1360 Experimental Dept. Rm/Swdl.C/MH. 28th. February, 1939. Associated Equipment Co. Ltd., Southall, MIDDX. For the attention of Mr. G.J.Rackham. Dear Sirs, In the absence of Mr. Robotham we give… | ||
| scan0019 | Article on the design, analysis, and failures of aircraft engine valve mechanisms, discussing issues like false motion and seating velocities. | ||
| View original record | Aircraft-Engine Valve Mechanisms By Vincent C. Young Chief Engineer, Wilcox-Rich, Division of Eaton Mfg. Co. NEMESIS of aircraft valve mechanism is false motion, Mr. Young believes. False motion in… | ||
| scan0020 | Analysis of valve cam lift curves comparing high and low RPM performance, showing deflection and discussing resulting valve failures. | ||
| View original record | 110 S.A.E. JOURNAL (Transactions) Vol. 44, No. 3 Graph 1: [A line graph with 'Lift in Thousandths' on the y-axis from 0 to 400 and 'Camshaft Deg' on the x-axis from 100 to 320. The title of the graph… | ||
| scan0021 | Analysis page on aircraft valve mechanisms, with graphs illustrating cam lift curves and seating velocities. | ||
| View original record | March, 1939 AIRCRAFT-VALVE MECHANISMS 111 Fig. 4 - It will be noted from this enlarged section of the closing event of Fig. 3 that the valve contacts the seat at very close to the desired velocity.… | ||
| scan0022 | Aircraft valve mechanisms, material requirements, and operational issues like seating velocity. | ||
| View original record | March, 1939 AIRCRAFT-VALVE MECHANISMS 113 compression chamber past the check ball. When the cam starts to lift, the plunger builds up pressure in the compression chamber, forcing the ball to seat, and… | ||
| scan0023 | Page from a Society of Automotive Engineers (S.A.E.) journal discussing engine valve clearances, material properties, and hydraulic lifter compensation. | ||
| View original record | 114 S. A. E. JOURNAL (Transactions) Vol. 44, No. 3 exhaust gases or condensed products formed by the combustion of gasoline containing 10 cc per gal of tetraethyl lead-ethyl-dibromide at any… | ||
| scan0024 | Page discussing aircraft valve mechanisms, material properties, fatigue failure, and corrosion resistance. | ||
| View original record | March, 1939 AIRCRAFT-VALVE MECHANISMS 115 itic is definitely superior to the hardenable type and, from 1000 F up, it is approximately double. This condition again points to the value of reduced… | ||
| scan0025 | Journal page discussing engine valve seat inserts and different designs for internally cooled valves. | ||
| View original record | 116 S.A.E. JOURNAL (Transactions) Vol. 44, No. 3 Fig. 14 — This figure illustrates the benefit of carrying the guide-boss cooling as close to the valve seat as possible Fig. 15 — Comparative tests of… | ||
| scan0026 | Query regarding the optimal sodium fill percentage for sodium-cooled valves, referencing an S.A.E. Journal article. | ||
| View original record | 1360 Rm/Swdl. from Rm. Rm4/R.18.3.39. We see from a certain article in the S.A.E. Journal that it is said that sodium-cooled valves are more effective when the hollow space is 40% filled with sodium… | ||
| scan0027 | Letter from Eaton Manufacturing Company regarding timing diagrams and cam contours for engines. | ||
| View original record | PLANTS: CLEVELAND DETROIT SAGINAW MARSHALL BATTLE CREEK JACKSON VASSAR MASSILLON EATON MANUFACTURING COMPANY CLEVELAND, OHIO EATON AXLES EATON BUMPERS EATON LEAF SPRINGS EATON COIL SPRINGS RICH VALVES… | ||
| scan0028 | Letter to The Eaton Manufacturing Co. regarding the camshaft for hydraulic tappets. | ||
| View original record | 1360 Rm2/R. 20th March, 1939. The Eaton Manufacturing Co., 14, Stanford Court, Cornwall Gardens, S.W.7. (For the attention of Mr.J.O. Eaton, Jnr.) Dear Sirs, We thank you for your letter and details… | ||
| scan0029 | Comparison of hairpin type and helical valve springs, specifically the B.60 and a 1937 Norton T.T. spring. | ||
| View original record | 1360 and 10HH TO By. c. to Da. c. to Da/JNR. Rm/JRS.1/JH.30.3.39. COMPARISON OF HAIRPIN TYPE & HELICAL VALVE SPRINGS. A pair of hairpin type springs were obtained and compared with the B.60 valve… | ||
| scan0030 | Comparison of the advantages of hairpin type valve springs versus helical type springs. | ||
| View original record | -2- The hairpin type valve spring has several advantages over the helical type. Firstly the dynamic effect of the mass of the spring is less, thus slightly raising the bouncing speed of the valve.… | ||
| scan0031 | The despatch of a valve spring sample for inspection. | ||
| View original record | 1360 To Hd/FC. from Rm. c. D/BP. Rm.11/R.20.4.39. Herewith valve spring to be despatched to:- R.A.C.Johnson, Esq., Messrs. R.Johnson & Nephew Ltd., Bradford Ironworks, Forge Lane, MANCHESTER, 11. This… | ||
| scan0032 | Letter concerning the dispatch of a sample shot blasted valve spring. | ||
| View original record | 1360. Rm10/R. 20th April, 1939. R.A.C. Johnson, Esq., Messrs. R. Johnson & Nephew Limited, Bradford Ironworks, Forge Lane, MANCHESTER. 11. Dear Robert, I am sending you, under separate cover, one shot… | ||
| scan0033 | Article detailing the characteristics and operation of magnetically actuated spray valves for fuel injection systems. | ||
| View original record | 530 1360 Characteristics of Magnetically Fig. 1. Sectional view of the magnetically actuated spray valve showing laminations, plunger, needle, coils, etc. tem. Since in this method of injection the… | ||
| scan0034 | The facilities and research projects at the N.Y.U. Aero Laboratories, including its wind tunnel and towing basin. | ||
| View original record | N. Y. U. AERO LABORATORIES 529 Moving belt ground board set up in nine-foot tunnel reducing vibration, measuring vibration periods, and damping under conditions simulating flight and in actual flight.… | ||
| scan0035 | Technical article detailing the design and operation of an actuated fuel injection valve and its associated systems. | ||
| View original record | 531 Actuated Fuel Injection Valve release and cut-off, the penetration as a function of time, and the form of the spray could be observed. The stroboscope was timed by a rotating switch consisting of… | ||
| scan0036 | Technical analysis of the electrical circuit for a magnetic injection valve, with related graphs and equations. | ||
| View original record | 532 MAGNETIC INJECTION VALVE an identical quantity of fuel at each successive operation. These characteristics are readily obtained by means of a simple electrical circuit. Electrical Circuit The… | ||
| scan0037 | Analysis of a magnetic injection valve, including oscillograms of current and voltage. | ||
| View original record | MAGNETIC INJECTION VALVE 533 Fig. 6. Oscillograms of the current through the nozzle A. (Left) 1300 mf condenser charge. B. (Right) 1300 mf condenser with charge throttled to 600 mf by means of a… | ||
| scan0038 | Comparison of spray development from a magnetically actuated valve and a jerk-pump system. | ||
| View original record | 534 MAGNETIC INJECTION VALVE Fig. 9. The spray from a magnetically actuated spray valve. Showing the development of the spray as an average of several hundred injections. Effect of Operating… | ||
| scan0039 | Study on the performance and injection delay of a magnetic injection valve using three-dimensional graphs. | ||
| View original record | MAGNETIC INJECTION VALVE 535 Fig. 11. The influence of injection pressure and condenser capacity on the weight of fuel discharged by the nozzle per injection. Nozzle orifice diameter 0.022 inches. 600… | ||
| scan0040 | Page from a journal discussing magnetic injection valves and a new concealed hinge design for auto bodies. | ||
| View original record | 536 MAGNETIC INJECTION VALVE [Graph 1] NOZZLE OPENING PRESSURE 1500 LB. PER SQ. IN. Y-axis: INJECTION DELAY - DEG. CAM ANGLE (0-7) X-axis (front): FUEL LINE LENGTH - INCHES (50.5, 40.5, 30.5, 17)… | ||
| scan0041 | The design and urgent testing of coolant jets for the exhaust valve seats on Wraith III and Bentley III models. | ||
| View original record | BY/MS. c. Rm. C. Rm/Swdt 1360 DA.13/G.26.4.39. Handwritten notes: no I des Swdt WRAITH III and BENTLEY III. COOLANT JETS FOR EXHAUST VALVE SEATS. Please receive herewith :- E.CD.1349 Coolant Jets for… | ||
| scan0042 | Tests to prevent oil leakage down valve stems using Neoprene sealing washers. | ||
| View original record | 1360 + 654 To By. from Rm/Swdl. c. Es. c. Da. c. Mx. c. De/Mos. c. RM/GWH. Rm/Swdl.7/WH.15.5.39. We have carried out tests with regard to stopping the oil going down the valve stems, in conjunction… | ||
| scan0043 | Alternative materials for a part and proposing that sealing washers be fitted to inlet valves only. | ||
| View original record | -2- RM/Swdl.7/EH.15.5.39. Although they do the job they are very fiddling to fit and Mx. is of the opinion that an alternative material, fibre or soft alum would be more suitable, and which he is… | ||
| scan0044 | Proposed scheme to prevent oil from leaking down valve stems using a dome-shaped, soft aluminium washer. | ||
| View original record | 1360? To: By. c. to Hs. c. to Rm. c. to Da. c. to Da/McS c. to By/NS c. to Rm/GWH Piles SWDL Mx2/MG.31.5.39 SCHEME FOR PREVENTING OIL GOING DOWN VALVE STEMS Further to Rm/Swdl.7/MH.15.5.39. In view of… | ||
| scan0045 | Implementation of a new sealing washer feature for valve springs on various engine units. | ||
| View original record | 1860 To By. from Rm/Swdl. c. Da/Jnr. c. By/CS. c. Da/MCS. Rm/Swdl.2/MH.9.6.39. VALVE SPRINGS. Having tested the sealing washers in the top spring cap on the Bentley V and the Wraith III to prevent oil… | ||
| scan0046 | Letter from The Tempered Spring Co. Ltd. regarding the supply of valve springs, noting a slight deviation from the specified drawings. | ||
| View original record | ALL COMMUNICATIONS SHOULD BE ADDRESSED TO THE COMPANY AND NOT TO INDIVIDUALS 1360 THE TEMPERED SPRING COMPANY LIMITED MANAGING DIRECTOR: S.J.YOUNG M.INST.C.E. TELEPHONE 21333 SHEFFIELD PRIVATE BRANCH… | ||
| scan0047 | Trial of cheaper exhaust valves, their material composition, and a comparison with existing parts for B.60 & B.80 engines. | ||
| View original record | 1360 + IOHH To Les. c. to G/JWH. Rm/Swdl.4/JH.12.8.39. Exhaust Valves. In the July issue of the S.A.E. journal there is an interesting article on exhaust valves by Colwell. In the endeavour to produce… | ||
| scan0048 | Performance and satisfactory testing of inlet valves produced by Motor Components Ltd. | ||
| View original record | 1360 To By. from Rm. c. Da. c. Da/Jnr. c. Mx. c. Les. Rm .1/MH.1.9.39. INLET VALVES. In regard to the controversy as to whether inlet valves produced by Motor Components Ltd. by the "electric upset"… | ||
| scan0049 | The use of electrically upset intake valves and extruded exhaust valves for high power engine units. | ||
| View original record | -2- In confirmation of our experience, an article on valves by Colwell in the July issue of the S.A.E. Journal recommends the use of electrically upset intake valves, but exhaust valves produced by… | ||
| scan0050 | Requesting 2 blueprints each for inner and outer valve spring drawings for the Experimental Garage. | ||
| View original record | 1360 TO. Rm c. Rm/FJH c. Rm/OTS [Struck through] c. EV [Struck through] EV/HH.2. 13.1.40 Clan/EXP FJH Please receive herewith 2 blueprints of each of the following drawings, as requested by Exptl… | ||
| scan0051 | Valve spring materials, testing procedures, and manufacturing processes for the Vulture engine. | ||
| View original record | Oy., R-R. Inc., Room 2-251, General Motors Building, Detroit...Michigan. c to Rm. [struck through] c to Hs. BY.2/HR.23.1.40. re VALVE SPRINGS. With reference to your memo, reference Oy.5/DS.22.12.39.,… | ||
| scan0052 | Work-hardening, carbon steel wire, and the benefits of shot blasting to prevent decarburisation. | ||
| View original record | - 2 - Continued:- rough parts, as far as I know they are not used in England for work-hardening purposes, and the intensity of work-hardening is apparently greater due to the hard backing of the… | ||
| scan0053 | Cost comparison for different types of valve springs. | ||
| View original record | 1360 24.1.40. Cost of valve springs :- EB.175 Chrome Vanadium - Made in Works. 1/4d. EB.3256 Carbon Wire valve springs. Bought Out 5½d. ......... | ||
| scan0054 | Reliability of valve springs after changing the material from Chrome Vanadium to Carbon Wire. | ||
| View original record | 1360 To By. c. to Hs. c. to Oy. Rm.9/JH.24.1.40. re Valve Springs. With reference to Ey.2/HR.23.1.40. As you know we changed from Chrome Vanadium to Carbon Wire valve springs about 2 years ago. Our… | ||
| scan0055 | Letter from a consulting engineer enclosing a provisional patent specification and drawing. | ||
| View original record | A.B.BUCKLEY, O.B.E., F.C.G.I., M.Inst.C.E., M.Inst.W.E. CONSULTING ENGINEER. TELEPHONE Nº VICTORIA 3219. TELEGRAMS: AIDFUL,SOWEST,LONDON. CABLES: AIDFUL, LONDON. CODES: BENTLEY'S. WESTERN UNION 5… | ||
| scan0056 | Blueprint for a Buckley self-adjusting tappet. | ||
| View original record | BUCKLEY SELF-ADJUSTING TAPPET PROVISIONALLY PROTECTED TAPPET CLEARANCE 0.010" MAXIMUM OIL PRESSURE 150 Lbs/Sq. Inch. Certain dimensions here shown such as the diameter of the equalising orifice in the… | ||
| scan0057 | Technical memorandum comparing the performance of Swedish carbon steel and Chrome Vanadium valve spring wire. | ||
| View original record | 1360 Hs. . . .from BY. Rm. BY.3/HR.30.1.40. C.P.S See Bull and ask him if these failures were on test or in customers hands - what were Pin's for same period (see our complaint sheet file) Re VALVE… | ||
| scan0058 | Failures and experiences with Swedish carbon steel wire in car and aero engine components. | ||
| View original record | - 2 - Continued:- been through several, and this fact is concurred in by the customer - the Air Ministry. What are the facts in regard to our experience in Swedish carbon steel wire:- We have, all… | ||
| scan0059 | Follow-up letter from A.B. Buckley regarding a provisional specification and blueprint for a self-adjusting tappet. | ||
| View original record | A.B.BUCKLEY, O.B.E., F.C.G.I., M.Inst.C.E., M.Inst.W.E. CONSULTING ENGINEER. TELEPHONE Nº VICTORIA 3219. TELEGRAMS: AIDFUL, SOWEST, LONDON. CABLES: AIDFUL, LONDON. CODES: BENTLEY'S. WESTERN UNION 5… | ||
| scan0060 | Letter to a consulting engineer regarding self-adjusting tappet work and research facilities. | ||
| View original record | 1360. Rm/CTS.12/ML.12.2.40. Feb: 12th. 1940. A.B.Buckley,Esq., Consulting Engineer, 64, Victoria Street. Westminster. S.W.1. Dear Sir, Your letter dated 8th. February has been passed over to the… | ||
| scan0061 | Provisional specification detailing the defects of self-adjusting hydraulic tappets. | ||
| View original record | PROVISIONAL SPEC No 1007/40 :- MR. BUCKLEY. TO R.H / C.R.H / CTS Re. - Self adjusting tappets This device in common with similar hydraulic tappets suffers from the defects that the thing will be… | ||
| scan0062 | Weights of valve mechanism parts and load/stress data for inner and outer springs. | ||
| View original record | To Rm/Caisley. With reference to your telephone message for particulars enabling further inlet valve springs to be made, I enclose herewith blue print of PL.111 which shows the room available for the… | ||
| scan0063 | Camshaft EB.4105, valve lift specifications, and related drawings PD.281 and PD.223. | ||
| View original record | -2- Jnr.7/JH.15.3.40. I was surprised when you mentioned camshaft EB.4105, because the inlet cams of that shaft are of high lift and long duration giving a valve lift of .437. It was my impression,… | ||
| scan0064 | Blueprint showing a cross-section of an engine valve train assembly, including the camshaft, rocker arm, and cylinder head. | ||
| View original record | No PL 111 PL 111 SCALE 1/1 ¢ CAMSHAFT 1.200 CAM. BASE CIRCLE EB. 3855 8.540 3.125 5.895 2.075 CE. 109 HEAD .030 GASKET EB. 5110 4.375 2.350 3.140 .831 .525 Faint Note Box: FOR THE R/H PEDESTAL THE… | ||
| scan0065 | Notes from a visit to Cadillac discussing their shutters, radiator caps, and Morse chains. | ||
| View original record | [Handwritten top left in blue ink] Jul 1940 Wither Serial No.102. [Handwritten top center in pink ink] spare Rolls-Royce, Ltd. Derby, England. OY.3/D/Apr.25.40. Car Work. Notes on Visit to Cadillac… | ||
| scan0066 | Summary of observations on American car manufacturer's engine components and balancing techniques. | ||
| View original record | Rm - 2. Serial No.102. OY.3/D/Apr.25.40. by Cadillac for several years, It was introduced to get rid of thrashing and breakage in the event of severe torsional periods. Breakage of such a chain… | ||
| scan0067 | Report comparing bore wear and oil consumption between standard, nickel chroma, and porous iron bores. | ||
| View original record | Rm - S. Serial No.102. OY.S/D/Apr.25.40. Anyhow, the balancing is a final trusing in the flywheel plane only. Bore Wear. (Discussion with Gordon and Byron Ellis). Briefly: Standard gray iron bores of… | ||
| scan0068 | Engine component wear and material selection, referencing Cadillac and Ford. | ||
| View original record | Rm - 4. Serial No.102. OY.3/D/Apr.25.40. Their latest Feroxed Perfect Circle ring makes bore wear measurements an "exact science". These rings are flat honed on the faces to permit free motion in the… | ||
| scan0069 | On competitor engine components, specifically Moraine Products bearings and 10 m/m spark plugs. | ||
| View original record | Rm - 5. Serial No.102. OY.3/D/Apr.25.40. Bearings. Cadillac propose to use in 1941 and Buick this summer, Moraine Products whitemetalled sintered copper-nickel bearing shells. Have not seen these, but… | ||
| scan0070 | Ignition troubles, improvements in A.C. insulator materials, and spark plug developments. | ||
| View original record | Rm - 6. Serial No.102. OY.3/D/pr.25.40. on the ignition trouble caused by lead, but that now A.C. are getting results. The A.C. insulator material (Siemens - A.C. - Sphinx aluminum oxide base) is… | ||
| scan0071 | Providing an estimated operational temperature range for a valve spring. | ||
| View original record | To:- Rm. Valve Spring Temperature. In reply to your memo 12.4.40, which has only recently been handed to us to deal with, we have no record of valve spring temperature in flight. All we can say is… | ||
| scan0072 | Suggestion to ascertain the temperature of valve springs during flight due to their cost and unreliability. | ||
| View original record | Lr/PSN. from Rm. Rm.14/ML.13.5.40. VALVE SPRING TEMPERATURE. With reference to Lr/Psn.10/EW.9.5.40. I suggest, that since valve springs are very expensive items and have from time to time been the… | ||
| scan0073 | Letter from consulting engineer A.B. Buckley regarding research and experimental data for a Buckley Tappet Adjuster. | ||
| View original record | A.B.BUCKLEY, O.B.E., F.C.G.I., M.Inst.C.E., M.Inst.W.E. CONSULTING ENGINEER. TELEPHONE NO. WALLINGTON 2549 TELEPHONE NO. VICTORIA 3219 TELEGRAMS: AIDEFUL, SOWEST, LONDON. CABLES: AIDEFUL, LONDON.… | ||
| scan0074 | Letter detailing the performance characteristics and reliability of an automatic valve adjuster based on test results. | ||
| View original record | It will be evident that the amount by which the valve is lifted depends on the rate of oil leakage past the piston and the speed of the engine, in other words on the duration of the period of lift.… | ||
| scan0075 | Confirming completion of instructions for a rationalised valve gear without grommets for the B.60 Ripplet. | ||
| View original record | 13/60 To: Rm from Rm/HH c: Ev. Rm/HH9/SW.30.9.40 B.60 Ripplet Valves & Fittings Sec.5050 PL.173. Rationalised Valve Gear without Grommets. Further to our memo Rm/HH.8/JH.24.4.40, we have now completed… | ||
| scan0076 | Brochure cover for Zero-Lash Hydraulic Valve Lifters from Automotive Products Company Ltd. | ||
| View original record | Zero-Lash HYDRAULIC VALVE LIFTERS Automotive Products Company Ltd Tachbrook Road Leamington Spa | ||
| scan0077 | Letter from Automotive Products Company Ltd regarding the testing, manufacturing, and pricing of ZERO-LASH Hydraulic Tappets. | ||
| View original record | B/60 VALVES DIRECTORS: E.B. BOUGHTON W. EMMOTT D.T. BROCK Zero-Lash (TRADE MARK) Hydraulic Tappets Manufacturers Automotive Products Company Ltd Tachbrook Road Leamington Spa REG. OFFICE: BROCK HOUSE… | ||
| scan0078 | Returning a leaflet on hydraulic tappets. | ||
| View original record | 13/6c Valves To Rm/ML. Jnr.10/JH.11.10.40. I return herewith the leaflet on hydraulic tappets as requested in Rm.4/ML.3.10.40. Jnr. [Signature] | ||
| scan0079 | Letter to Leyland Motors regarding hydraulic tappets and a 12-cylinder crankshaft. | ||
| View original record | 13/60 Valves gen: put Inderliste in Leyland file Rm.3/ML. 4.11.40. C.V.Pilkington,Esq., Leyland Motors Ltd., LEYLAND. Lancashire. Dear Pilkington, Herewith the information on hydraulic tappets which I… | ||
| scan0080 | Letter discussing engine torsional vibrations and crankshaft performance in 6 and 12-cylinder engines. | ||
| View original record | - 2 - Cont'd. However, I feel that such an analysis at the present juncture would serve very little useful purpose since the engine is already in being, and what we have to do is to make it work. We… | ||
| scan0081 | Extract detailing the testing and performance of self-adjusting tappets for the Hs.1210 engine. | ||
| View original record | EXTRACT. Hs/Rm.1/KW.25.4.34. A complete set of self adjusting tappets to Hs.1210 has been tested both on the test bed and in a chassis, with promising results. There is no sign of air locking under… | ||
| scan0082 | Ongoing tests on self-adjusting tappets, oil drainage, and different plunger types. | ||
| View original record | - 2 - At present the self adjusting set of tappets Hs.1210 in the chassis are being run continuously to see if wear takes place and its effect, also an arrangement is being devised to prevent oil… | ||
| scan0083 | Previous work on hydraulic tappets, Leyland's interest, and potential patenting. | ||
| View original record | Valves + fittings put note in Leyland file NW. from Rm. Rm.6/ML.4.11.40. 1360 We did some work on hydraulic tappets eight years ago and attach a copy of a report on the subject, together with drawings… | ||
| scan0084 | Promising hydraulic tappet design, its proposed road testing, and comparison with the Cadillac design. | ||
| View original record | C O P Y. Hs/Rm.1/KW.25.4.34. HYDRAULIC TAPPETS. -------------------- We appear to have a hydraulic tappet that is promising. In its present form and dimensions it is well worth running 10,000 miles on… | ||
| scan0085 | Issues and proposed improvements for Ph.II self-adjusting direct-acting hydraulic tappets, focusing on air lock problems. | ||
| View original record | C O P Y. Hs/Swdl.2/KW.25.4.34. Ph.II Self Adjusting Tappets (Direct Acting). ------------------------------------------ With reference to our previous report, Hs/Swdl.5/KT.14.9.33 on this type of… | ||
| scan0086 | Technical report on the performance and testing of self-adjusting tappets and related valve train components. | ||
| View original record | Hs/Swdl.2/KW.25.4.34. - 2 - (1) As the cam starts to lift, the inertia in Hs.1210 tends to throw the ball on to its seat, other than by the oil pressure in the compression space. Hs.1206 tends to… | ||
| scan0087 | The investigation and testing of different tappet arrangements for the Phantom engine. | ||
| View original record | Hs/Swdl.2/KW.25.4.34. - 3 - generally is being investigated, the question of suitable springs for these particular tappets on the Phantom is not important. Attached is a print, EX.12871, which other… | ||
| scan0088 | Blueprint diagram for Moon-Auto Adjusting Tappets, Phantom II (Scheme 2). | ||
| View original record | Hs 1210. WITH EXCEPTION OF THE PLUNGER HOUSING THE PLUNGER MECHANISM DETAILS ARE AS SHEWN IN THE ENLARGED SECTION OF Hs 1906 MOON-AUTO ADJUSTING TAPPETS PHANTOM II (SCHEME 2) SCALE 1/1 KMJ 16-11-33 HS… | ||
| scan0089 | Schematic for a Modu auto-adjusting tappet for the Phantom II, scheme 3. | ||
| View original record | Hs 1209 SECTION THro BALL HOUSING SHEWING OIL FEED GROOVE SCALE 1/1 SECTION AA. THREAD TO WITHDRAW BALL SEATING BALL HOUSING MUST BE A GOOD FIT IN PLUNGER IN ORDER TO PREVENT ANY LEAK HOLE FOR… | ||
| scan0090 | Blueprint for a modification to auto-adjusting tappets for the Phantom II, Scheme 1. | ||
| View original record | MODN. AUTO ADJUSTING TAPPETS, PHANTOM II (SCHEME 1), PUSH FIT IN ROCKER, BALL TO HAVE .005 STROKE, SCALE 1/1, DOWEL ONLY FOR LOCATING OIL HOLE TO HAVE AMPLE CLEARANCE, .218 DIA BALL, .005 STROKE,… | ||
| scan0091 | Blueprint of a self-adjusting tappet for Bentley and 25HP models. | ||
| View original record | Hs1364 Cap-Nut (Hs1351) INNER MEMBER TO HAVE .046 DIA HOLE DRILLED AND MAT. TO BE VCM NITRO HARDENED OTHERWISE As (Ex12872) DOWEL SCREW Ex12875 Ex12876 (Hs1363) 5P 39' .218 DIA BALL .005 LIFT LEFT AND… | ||
| scan0092 | Specifying that 45% of the hollow headed valves should be filled with sodium. | ||
| View original record | 13/60 To Rm/HH. from Rm. Rm.7/ET.5.11.40. Please specify that 45% of the hollow headed valves should be filled with sodium. Rm. | ||
| scan0093 | That hollow headed valves should be 45% filled with sodium. | ||
| View original record | To Rm/HH. from Rm. Rm.7/ET.5.11.40. Please specify that 45% of the hollow headed valves should be filled with sodium. Rm. | ||
| scan0094 | Letter to Vauxhall Motors regarding production capacity for lead bronze bearings. | ||
| View original record | 1360 Rm.5/ET. A. TAUB, Esq., Vauxhall Motors Ltd., L U T O N, Beds. 5th November 1940. Dear Taub, Thank you for your letter of 28th October giving the information regarding the amount of Sodium in the… | ||
| scan0095 | Letter from Vauxhall Motors regarding sodium amounts for valves and sourcing engine bearings. | ||
| View original record | Vauxhall Motors Ltd LUTON. BEDS. TELEPHONE NUMBER 2600 LUTON. TELEGRAMS CARVAUX. TELEX. LUTON WHEN REPLYING PLEASE QUOTE → OUR REF: 289/AT/IF YOUR REF: Rm.1/ML 28th October, 1940. W.A. Robotham, Esq.,… | ||
| scan0096 | Letter to Motor Components (Brm.) Ltd. requesting production of a dozen exhaust valves. | ||
| View original record | 1360 Rm/CTS.1/ET. EXPERIMENTAL DEPARTMENT. 12th November, 1940. Motor Components (Brm.) Ltd., Burbridge Road - Bordesley Green, BIRMINGHAM 9. Dear Sir, We enclose herewith, for your attention:-… | ||
| scan0097 | Requesting design modifications and drawings for Merlin engine connecting rods, a hydraulic tappet, and a die-cast piston. | ||
| View original record | 186 Rm/HH. From Rm. Tappet Rm.1/ML.13.11.40. Will you please look into the following :- 1. We want a simplified "Merlin" forked and plain rod detailing. We did a simplified and only partially machined… | ||
| scan0098 | Letter to Rotol Airscrews Ltd. inquiring about the status and configuration of a previously supplied Phantom II engine. | ||
| View original record | 13/60 EXPERIMENTAL DEPARTMENT. Rm/CTS.2/ET. 19th November, 1940. ROTOL AIRSCREWS Ltd., Cheltenham Road, GLOUCESTER. Attention of Mr. Fairhurst. Dear Mr. Fairhurst, Some time ago, we supplied your… | ||
| scan0099 | Letter from the Experimental Department inquiring about the status of valve forgings sent for machining. | ||
| View original record | 13/60 EXPERIMENTAL DEPARTMENT. 20th November, 1940. Rm/CTS.1/ET. Motor Components, (Brm.) Ltd., Burbridge Road - Bordesley Green, B I R M I N G H A M 9. Dear Sirs, In April of this year, we sent you… | ||
| scan0100 | Analysis of masked inlet valve timings and camshaft configurations to improve engine idling performance. | ||
| View original record | 1360 To Rm. c. to Rm/CTS. c. to Rm/TAS. Jnr.1/JH.13.11.40. MASKED INLET VALVE AND IDLING OF THE HIGH POWER HEAD. Rm.1/ML.27.10.40. Before seeing how much the masking of the inlet valve is worth, it… | ||
| scan0101 | Increase of seat width and phasing cams to improve idling. | ||
| View original record | -2- Jnr.1/JH.13.11.40. The proposed increase of seat width should be a benefit, but I am not able to calculate the value for the orifice coefficient. Refer PL.403 From the investigations, it would… | ||
| scan0102 | Letter from a supplier regarding valves damaged during an air raid. | ||
| View original record | CONTRACTORS TO THE ADMIRALTY WAR OFFICE & AIR MINISTRY - ON AIR MINISTRY LIST OF FIRMS WHOSE INSPECTION AND TESTING FACILITIES HAVE RECEIVED A.I.D. APPROVAL TELEPHONE: VICTORIA 0514-0515 TELEGRAMS:… | ||
| scan0103 | Letter responding to a suggestion for a rotary valve, comparing it to existing poppet valves. | ||
| View original record | 1360 30th December, 1940. RM.5/ET. M.G.A. Bedford, Esq., 40, Charles Street, SOLIHULL, Warwickshire. Dear Sir, Thank you for your letter of the 25th December. The type of rotary valve you have… | ||
| scan0104 | Letter with suggestions for improving engine valve design and materials. | ||
| View original record | 40 Charles Rd Solihull Warwickshire For the attention of Chief Engine Experimental Engineer. Dear Sir, Two items relating to valves in I.C. engines have been on my mind for some time and in these days… | ||
| scan0105 | Letter discussing case hardening steel and the effects of different fuels like Benzol and Ethyl on engine valves. | ||
| View original record | time give the clearer port so earnestly sought after? The second item; I was case hardening a small piece of steel over a gas jet before being dipped in the powder, the steel became red hot very… | ||
| scan0106 | Hand-drawn sketches illustrating engine inlet and exhaust valve mechanisms. | ||
| View original record | INLET EXHAUST Very light Spring Springs holding Valve in suspension Reaford 40 Charles Rd Solihull 25 12 40 | ||
| scan0107 | To Miss Taylor requesting a record adjustment due to a pricing error on an invoice for machined exhaust valves. | ||
| View original record | Miss Taylor 1860 Rm. O. Rev/JJ G/WFH/ABF.56/MM. 27.2.41 We have an invoice from Machining Ltd. dated 15th January charging £30.4s.9d. for the machining of 6 RE.1723 Exhaust Valves against our order… | ||
| scan0108 | Standard 8 valve timing specifications for inlet and exhaust valves, and valve springs. | ||
| View original record | 1860 To Rm/Wym, From Rm/Clm. Rm/Clm.20/ST.13.3.41. STANDARD 8 VALVE TIMING. INLET VALVES. 1 - Valve timing - at running clearance of .012" - opens at 19° before T.D.C. closes at 120° before T.D.C. at… | ||
| scan0109 | Querying calculations for Merlin inlet valve acceleration, valve bounce, and the necessity of chromium plating for rockers on Merlin and Kestrel engines. | ||
| View original record | To Lov. from Rm. 1360 FILE Rm.5/SW.25.5.41. Our calculations indicate that the minimum acceleration of the Merlin inlet valve at 1,000 RPM. is 104 ft/sec2 and the maximum acceleration of the same… | ||
| scan0110 | Report discussing the causes and potential solutions for valve spring surge in different engine configurations. | ||
| View original record | To JM. from Em. Copy to Em/TAS. Rm/Wynn 1360 Em.1/ST.5.7.41. Attached is a report on the valve spring surge which has been worrying us. If the accelerations are heavier on the short duration camform,… | ||