Rolls-Royce Archives
| Identifier | Entry | ||
| scan0001 | Re-introduction of pinned valve tappets for the 40/50 HP chassis to reduce noise. | ||
| View original record | (DA) To Da. from E. c. to CJ. c. to Bn. c. to EP. c. to EH. c. to Cy. c. to EFC. E2/G20.11.19. X.3733 - RE PINNED VALVE TAPPETS 40/50 H.P. CHASSIS. We send you herewith drawing No LeC.1160 showing the… | ||
| scan0002 | Advantages and disadvantages of returning to a pinned valve tappet design. | ||
| View original record | EH. from EP. c. to BN. c. to E. X3733 EP10/F25.11.19. RE. PINNED VALVE TAPPETS. With reference to Mr.Elliot's memo. DA2/G20/11/19, I am not over-anxious that we should condemn our present tappets and… | ||
| scan0003 | Design of tappets and the decision to revert to keying them. | ||
| View original record | R.R. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. X3733 To BN. from R. Copy to CJ. " " HS. " " EP. " " WOR. " " DA. X.3733. RE TAPPETS. R4/G30.11.19. For simplicity and to avoid a slight risk of… | ||
| scan0004 | Issues with pinned valve tappets, proposing improved manufacturing accuracy as a solution. | ||
| View original record | X. 3733. To E. from Bn. Copy to CJ, Da, Hs, EP, BY, CK. Bn8/W11219. X.3733. - RE PINNED VAVLE TAPPETS. E With reference to DA(?)?/G20.11.19, our impression is that the variation in clearance obtained… | ||
| scan0005 | Use of pinned valve tappets to achieve a quieter engine. | ||
| View original record | R.R. 235 A. 100 T/P S.F. 575. 16-4-19) G. 2354. X 3733 R7/G3.12.19. ---------- To BN. from R. Copy to CJ. " " EH. " " EP. " " DA. X.3733. " " CK. X.3647. RE PINNING OF VALVE TAPPETS.… | ||
| scan0006 | The pinning of valve tappets, confirming they will be fitted to the 10,000 miles car. | ||
| View original record | R.R. 285 n (200 T) (S.F. 673, 22-5-19) G. 2376. X.3733 To. [Redacted] From Bn. Copy to [Redacted] [Redacted] [Redacted] Ck. X.3733 Re Pinning of Valve Tappets. X.3644 BmH/WHC1219. With reference to… | ||
| scan0007 | List of requested new parts and modifications for chassis 2.EX. | ||
| View original record | R R 736 a (100 T) (S F 846 6-8-19) G. 2460 X3733 Hn1/LG29.12.19. To RHC. from Hn. ---------- X.3743. - BE Chassis 2.EX. ---------- We would like the following new parts fitted to chassis 2.EX. 1.… | ||
| scan0008 | Proposal to test the experimental 4.EX chassis, listing its five new features. | ||
| View original record | X.3733 Extract from Hs2/LG27.2.20. F X.3764. RE 4.EX CAR. I propose to bring 4.EX chassis (the latest experimental chassis) to West Wittering next week. This chassis is fitted with the following new… | ||
| scan0009 | Extract listing finished experimental parts for the 40/50 Chassis. | ||
| View original record | X 3733 Extract from RHC1/LG15.4.20. We give below a list of experimental parts which have been finished. X.3764. 40/50 CHASSIS. X. No. | Parts fitted. | Engine. --- | --- | --- 3733. | Pinned Valve… | ||
| scan0010 | List of experimental parts fitted to chassis 6.EX. | ||
| View original record | X.3433 Extract from RHC1/LG22.6.20. RE CHASSIS 6.EX. Will you kindly note that the above car has been fitted with the following experimental parts:- X.3733. - Pinned Valve Tappes - N.2696. X.3699. -… | ||
| scan0011 | Extract detailing a list of experimental parts being fitted to the 6.EX car. | ||
| View original record | H.R. 988a (100 T) (S.G. 648, 19-2-20) G. 2618 X 3433 Extract from Hs6/LG28.6.20. X.3923. RE CAR 6.EX. In reply to your telegram, we have arranged to arrive at West Wittering about 10-30 A.M. on… | ||
| scan0012 | Extract detailing issues of wear and noise with tappet rollers and proposing a solution. | ||
| View original record | X.3733 Extract from EP/Thn12/F28.6.21. X.3719 X.3733 Tappet rollers - these have given considerable trouble with wear and noise, as already reported. Roller pins in rockers now being pushed in to… | ||
| scan0013 | Design modifications and feedback for valve gear and desaxe tappets. | ||
| View original record | Hs. BY. E. FROM R. c. to Sg. Wor. Da. X1157 R5/M3.2.29. X.7060 X.1157 SS. VALVE GEAR - DESAXE TAPPETS. Since the contact runs out to meet the cam is there any need to offset, and would it be possible… | ||
| scan0014 | Tappet clearance, attaching instruction No. 233. | ||
| View original record | X 3733 Hs/Rm Mx/McM/M9.8.29. Re tappet clearance. With reference to your conversation this morning with Mx. we attach hereto a copy of our instruction No. 233.. regarding tappet clearances to be… | ||
| scan0015 | Instruction detailing tappet clearances for the 40/50 HP Series J engine. | ||
| View original record | X3733 Mx/McM7/T19.7.29.. Instruction No. 233.. Re 40/50 HP . Tappet clearance. The tappet clearance for normal running Series J engine is .003" For timing purposes .020" and [handwritten] o/k Inlet… | ||
| scan0016 | Information on past patent specifications for self-adjusting tappets. | ||
| View original record | X3733 By. from E. c. Sg. c. Wor. Hs. E2/M9.7.30. Re : PATENT SELF ADJUSTING TAPPETS. ------------------------------------- Some few years ago a number of patent specifications were submitted to us in… | ||
| scan0017 | On applying an automatically adjusting valve tappet scheme to the P.2. engine for experimental trials. | ||
| View original record | X3733 By. from E. C. Sg. Hs. E1/M15.7.30. X.1157 P.2. AUTOMATICALLY ADJUSTING VALVE TAPPETS. We send herewith Lec.2808, shewing the above. We think that when it come to a multi-cylinder engine of the… | ||
| scan0018 | Recommending a change in material gauge for Peregrine Tappet Bridge Pieces due to collapse. | ||
| View original record | 8115F. To BY. from E/JNR. E/JNR.2/HP.14.1.33. c. Hs. RHC. re Peregrine Tappet Bridge Pieces. E.100196. ------------------------------------------ All the above parts show signs of slight collapse, and… | ||
| scan0019 | Silent tappet failure caused by an oil supply issue. | ||
| View original record | Files. X1157 30.5.33. x 1060 SILENT TAPPETS. The attached photograph shows the failure of the silent tappets due to failure of the oil supply which caused the top of the piston to knock the bottom out… | ||
| scan0020 | Photograph of a machined or cast metal component with multiple bores. | ||
| View original record | ", | ||
| scan0021 | Letter from Wilcox-Rich Corporation discussing the design and potential improvement of a hydraulic tappet. | ||
| View original record | STD X1360 See me HS January 27, 1934 Dict. 1-25-34 Mr. Rowbotham, Rolls Royce, Ltd. Nightingale Road, Derby, ENGLAND. Dear Mr. Rowbotham: I enclose a blueprint showing the hydraulic tappet as we now… | ||
| scan0022 | Blueprint drawing of a hydraulic lifter for a Dodge Truck. | ||
| View original record | ALLOWABLE VARIATION ON DIMENSIONS NOT OTHERWISE SPECIFIED TO BE PLUS OR MINUS .010 GRIND SEAT CONCENTRIC WITH STEM WITHIN TOTAL INDICATOR READING. FINISH NO. HEAT TREATMENT NO. THIS FACE MUST BE… | ||
| scan0023 | Evaluating the Buckley Patent Adjustable Tappets. | ||
| View original record | W/S - Db. C. to Wor: + 1157 Hs/Smth.19/KW.20.3.35. The Buckley Patent Adjustable Tappets. Re Db.21/JL.18.3.35. We have examined the drawing of this device and have come to the conclusion that :- (1)… | ||
| scan0024 | Requirements for adjustable tappet mechanisms and concluding that the Buckley patent device is unsuitable. | ||
| View original record | W/S - Db. X1157 Hs/Smth.19/KW.2.4.35. Buckley Patent Adjustable Tappets. Re Db.11/JL.1.4.35. We have read the letter from Mr. Buckley, but we do not consider that he has answered the general… | ||
| scan0025 | Rejecting a proposed improvement for Cadillac Automatic Tappets after comparison with a previous design. | ||
| View original record | To By. X 1157 Hs/Std.6/KW.5.4.35. Referring to your memo. By.l/N.15.3.35, we have examined the photostat of the suggested improvement to Cadillac Automatic Tappets together with the accompanying copy… | ||
| scan0026 | Confidential letter regarding a new 'Valve Slack Adjuster' design, seeking an opinion on its potential improvement over an existing patent. | ||
| View original record | COPY OF LETTER RECEIVED FROM: W.W.CONSTANTINE, 111, GROSVENOR ROAD. LONDON S.W.1. CONFIDENTIAL. 11th,March 1935. R.W.Harvey Bailey,Esq., Messrs.Rolls-Royce Ltd., Derby. Dear Mr Harvey Bailey, Valve… | ||
| scan0027 | Extract of a letter from General Motors Corporation regarding a valve and slack adjuster mechanism. | ||
| View original record | CONFIDENTIAL. COPY. GENERAL MOTORS CORPORATION. Extract of a letter dated January 9th, 1935. As previously stated, I have had this mechanism in use in my own car and so far as I can see it operates… | ||
| scan0028 | The design and experimental determination of parameters for a spherical valve and plunger mechanism. | ||
| View original record | -2- valve for it is obvious that the oil may be admitted in such a manner that the jet effect will hold the valve off its seat if the pressure is directed towards the upper part of the spherical… | ||
| scan0029 | Letter from Rudge-Whitworth Ltd requesting drawings for valve lift diagrams and tappet arrangements. | ||
| View original record | RUDGE-WHITWORTH LTD TELEPHONE 4001 TELEGRAMS RUDGE COVENTRY RUDGE WORKS COVENTRY X1360 GLH/MH. Messrs. Rolls-Royce Ltd., DERBY. 12th. November 1935. For the attention of Mr. Robotham Dear Sirs, I… | ||
| scan0030 | Letter to Rudge-Whitworth Ltd. enclosing drawings for self-adjusting tappets and requesting information on hardened piston rings. | ||
| View original record | X.1360 Exptl. Dept. Hs/Std.9/KW. 16th November, 1935. Messrs. Rudge-Whitworth Ltd., COVENTRY. For the attention of Mr. G.L. Hack. Dear Sirs, Replying to your letter of the 12th inst., I am enclosing… | ||
| scan0031 | Letter from a supplier discussing their design and manufacturing practices for valve springs. | ||
| View original record | COPY. X1360 Barnes-Gibson-Raymond-Inc., 6400 Miller Avenue, Detroit, Mich. 18th May, 1936. Mr. W.A. Robotham, Rolls-Royce Co., Derby, England. Dear Sir, We have received a letter from Mr. Alexander… | ||
| scan0032 | Technical discussion on valve spring surge, calculation methods, and wire material selection. | ||
| View original record | -2- After we have made the springs as free from surge as possible, we measure the amount of surge by noting the variation in coil movement under the stroboscope, or recording it by having a brass… | ||
| scan0033 | Letter detailing the manufacturing process for valve springs, including heat treatment and shot blasting. | ||
| View original record | -3- In Canada the Steel Company of Canada, Hamilton, Ontario, produce an acceptable product. You of course are familiar with the wires which are produced in ENGLAND, and which are probably as good as… | ||
| scan0034 | Technical memo discussing research on valve springs, their permissible stress range, and performance comparisons. | ||
| View original record | x1360 To E. c. to By. Hs/Smth.12/KW.8.6.36. Valve Springs. We have been reading a paper on valve springs by Zimmerli, Chief Engineer of Barnes, Gibson and Raymond Inc., of America. They have done an… | ||
| scan0035 | Graph showing the average stress range for good carbon steel wire and total static stress variation on valve springs. | ||
| View original record | AVERAGE STRESS RANGE FOR GOOD CARBON STEEL WIRE B. 23. ELASTIC LIMIT STRESS IN THOUSAND POUNDS PER SQUARE INCH TOTAL STATIC STRESS VARIATION ON VALVE SPRINGS. FRANKLIN 52039 REO 3 NA 27 REO 3 AA 57… | ||
| scan0036 | Graph illustrating the endurance stress range for S/CV valve springs. | ||
| View original record | STRESS - LBS/SQ. IN. X 10^-3 RANGE FOR STATIC DEFLECTION ONLY RANGE WITH SURGE ELASTIC LIMIT ENDURANCE LIMIT LOWEST WORKING STRESS A B PH.Z E.851552 (77%) BENT STD. E.8175 (96%) 20/25 STD E.58525… | ||
| scan0037 | Letter to the Wilcox-Rich Valve Corporation inquiring about American practices for exhaust valves and valve seats to prevent erosion. | ||
| View original record | X1360 Exptl. Dept. Hs/Rm.18/KW. 12th June, 1936. Robert Jardine, Esq., The Wilcox-Rich Valve Corporation, Detroit, Michigan, U.S.A. Dear Jardine, We had a visit from Mr. Taub the other day which we… | ||
| scan0038 | Specification sheet for ordering compression springs and the calculation for stress. | ||
| View original record | Compression Springs. X1360 Necessary Specifications for Ordering :- Material. Size and kind of stock. Diameter. Inside or outside. State if spring works over a rod or in a hole, giving dimensions.… | ||
| scan0039 | Page of calculations for determining the stress and wire size for springs, including formulas and worked examples. | ||
| View original record | -2- Substituting values and simplifying the expression we get - S = (P x D x 2.55) / ((dia. of wire)³ or d³) P = Load in lbs. D = Pitch diameter which is the O.D. of spring minus the wire size in… | ||
| scan0040 | The formula for calculating spring deflection with worked examples. | ||
| View original record | -3- Deflection: After obtaining the correct wire size, the next thing to calculate is the rate of the spring. The usual formula for deflection is: F = (8 P D³ N) / (G d⁴) Wherein: F = deflection in… | ||
| scan0041 | Page detailing calculations for helical compression springs and formulas for square wire springs. | ||
| View original record | -4- Rate per inch of spring deflection: 5 / 1.14 = 4.4 lbs. per inch. For most helical compression springs where the wire diameter is not over one-fifth the mean spring diameter these formulas are… | ||
| scan0042 | Page discussing a spring design formula from a 1925 S.A.E. Journal and introducing a subsequent table of formulas. | ||
| View original record | -5- Then experience gives us the formula, as published by Stewart in S.A.E. Journal of August 1925. d = .48d (O D + 1) ------------- P D For ratio of diameter of wire to mean diameter of spring… | ||
| scan0043 | Page detailing formulas and design considerations for round and square wire springs. | ||
| View original record | TABLE OF FORMULAS FOR ROUND AND SQUARE WIRE | | Round | Square | | Round | Square | |---|---|---|---|---|---| | P | π S d³ / 8 D | 4 S d³ / 9 D | S | 8 P D / π d³ | 9 P D / 4 d³ | | P | G f d⁴ / 8 D³… | ||
| scan0044 | Graph showing the actual stress curve of helical compression springs. | ||
| View original record | ACTUAL STRESS CURVE OF HELICAL COMPRESSION SPRINGS. Y FACTOR 2.3 2.2 2.1 2.0 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1 1.0 RATIO: MEAN DIAMETER WIRE DIAMETER 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 | ||
| scan0045 | Table of suggested total stress for helical compression springs made of various materials. | ||
| View original record | -6- Suggested Total Stress - Helical Compression Springs. Material Max. Working Stress Max. Solid Stress Steel lbs.per Sq.In. lbs.per Sq.In. 1. Music Wire 60 - 70,000 110 - 120,000 2. Tempered Wire 50… | ||
| scan0046 | Page detailing the B-G-R formula for the quick computation of vibration frequency. | ||
| View original record | -7- VIBRATION FREQUENCY FORMULAS. C. B-G-R FORMULA for quick computation. Accurate enough for most engineering design. Period in vibrations per minute = Sm / 4.777 f f = Deflection in inches from free… | ||
| scan0047 | Specification sheet outlining formulas and constants for calculating extension springs. | ||
| View original record | -8- EXTENSION SPRINGS - Specifications when ordering. Material - size and kind of stock. Length -overall. Diameter. Number of coils. Style of ends (see plate page 17) Formulas for Calculation.… | ||
| scan0048 | Page of calculations for spring properties including stress, energy, and modulus of resilience, with a worked example. | ||
| View original record | -9- (S² / 2G) K G = 11,500,000 S = Stress in lbs/sq.in. The modulus of resilience for springs with wire in torsion is: (S² / 2E) K E = 30,000,000 S = Stress in lbs/sq.in. Total energy in spring =… | ||
| scan0049 | Calculations for spring resilience, energy absorption, and material weight. | ||
| View original record | -10- Effective Resilience = 218 inch pounds. 218 x 3.52 = 766 inch pounds per pound of steel. Total energy in 1000 springs equals 1000 x 45 or 45,000 inch pounds. 45,000 / 766 = 58.7 lbs/thousand… | ||
| scan0050 | Specification guide for ordering torsion springs, including calculation formulas and diagrams of various types. | ||
| View original record | Torsion Springs Specifications when ordering Material Beyond this specification it is necessary to submit a drawing with full description or a sample. Torsion springs are entirely special. The springs… | ||
| scan0051 | Reference table of the third and fourth powers of various wire diameters. | ||
| View original record | Table of Third and Fourth Powers of Wire Diameters d, d³, d⁴ .001, .000000001, .000000000001 .002, .000000008, .000000000016 .003, .000000027, .000000000081 .004, .000000064, .000000000256 .005,… | ||
| scan0052 | Letter from Wilcox-Rich Corporation informing of the death of Mr. Robert Jardine. | ||
| View original record | X1360 WILCOX-RICH CORPORATION DIVISION OF EATON MANUFACTURING COMPANY 9771 FRENCH ROAD DETROIT, MICHIGAN PRODUCTS RICH VALVES VALVE TAPPETS VALVE SEAT RINGS VALVE-O-MATIC HYDRAULIC LIFTERS PLANTS… | ||
| scan0053 | Letter from Wilcox-Rich Corporation regarding American practices on engine inserts and valve seats. | ||
| View original record | WILCOX-RICH CORPORATION DIVISION OF EATON MANUFACTURING COMPANY 9771 FRENCH ROAD DETROIT, MICHIGAN PRODUCTS RICH VALVES VALVE TAPPETS VALVE SEAT RINGS VALVE-O-MATIC HYDRAULIC LIFTERS PLANTS SAGINAW… | ||
| scan0054 | Letter from Wilcox-Rich Corporation regarding an ideal combination of austenitic type valves and Stellite-faced inserts. | ||
| View original record | WILCOX-RICH CORPORATION 2. Mr. W. A. Robotham June 23, 1936 It is now believed that the ideal combination, with our present knowledge, is an austenitic type valve with the seat Stellited, operating… | ||
| scan0055 | Graph of safe stress ranges for valve spring wire, comparing Chrome-Vanadium and Carbon Steel. | ||
| View original record | 1360 SAFE STRESS RANGES FOR VALVE SPRING WIRE STRESSES ALLOW FOR SURGE (IF ANY) AND ARE CORRECTED BY WAHL'S FORMULA CHROME - VANADIUM CARBON STEEL Y-AXIS: HIGHEST SAFE WORKING STRESS LBS/SQ. IN. X… | ||
| scan0056 | Letter from Ethyl Export Corporation enclosing a memorandum on valve steels and arranging a meeting in Derby. | ||
| View original record | CABLEGRAMS: ETHYLPORT, LONDON. TELEGRAMS: ETHYLPORT, SOWEST. Handwritten: Swdl. Please note & return Handwritten: x 1360 Handwritten: Rm ETHYL EXPORT CORPORATION Incorporated in the State of Delaware… | ||
| scan0057 | Bulletin detailing the composition and naming conventions of Silchrome 'X' series valve steels. | ||
| View original record | SILCHROME "X" STEELS. The following information is being sent to you for your own use. The valve manufacturers have asked us not to discuss it with their jobbers inasmuch as they have little or no… | ||
| scan0058 | The properties and potential use of a new steel compared to Silchrome. | ||
| View original record | -2- in its finished form. Its co-efficient of expansion is 25% more than Silchrome whereas Silchrome X-8, 9 and 10 are 50% more than Silchrome. We rather believe that this steel will have fairly wide… | ||
| scan0059 | Request for assistance with valve spring failures on a new 12-cylinder car. | ||
| View original record | X1360 Exptl. Dept. Hs/Gry.7/KW. 18th September, 1936. Messrs. Barnes-Gibson-Raymond, Inc., 6400 Miller Avenue, Detroit, Michigan, U.S.A. For the attention of Mr. Zimmerli. Dear Sirs, We are having a… | ||
| scan0060 | Letter from Barnes-Gibson-Raymond Inc. regarding the design and specification of springs. | ||
| View original record | B.G.R. INC. BARNES-GIBSON-RAYMOND-INC. MANUFACTURERS OF SPRINGS OF ALL DESCRIPTIONS 6400 MILLER AVENUE DETROIT, MICH. LYMAN D. ADAMS, PRESIDENT F. M. RAYMOND, VICE-PRESIDENT WM J. BLACK, SECRETARY W.… | ||
| scan0061 | Material standard specification for valve spring steel wire. | ||
| View original record | MATERIAL STANDARD C. S. V. 2 VALVE SPRING STEEL WIRE 1. This specification covers an excellent grade of valve spring steel used by 2. STEEL MANUFACTURE: - This steel is to be made according to… | ||
| scan0062 | Material standard sheet detailing physical properties, surface requirements, and size variations for wire. | ||
| View original record | Sheet #2 Material Standard C. S. V. 2 4. PHYSICAL PROPERTIES: - (Continued) C H A R T (Continued) #9 5/32 #8 #7 Size .148 .156 .162 .177 Reverse Twist 17 16 15 14 Using 15" specimen. 3/16 #6 #5 7/32… | ||
| scan0063 | Material standard sheet detailing the procedures for steel inspection, rejections, and replacements. | ||
| View original record | Sheet #3 Material Standard C. S. V. 2 8. INSPECTION, REJECTIONS AND REPLACEMENTS:- If desired, mill facilities must be provided the inspector to satisfy him that the steel is being furnished to these… | ||
| scan0064 | Letter to Barnes-Gibson-Raymond Inc. regarding the production of valve springs for a Bentley vehicle. | ||
| View original record | X 1360 Exptl. Dept. Hs/Gry.8/KW. 10th October, 1936. Messrs. Barnes-Gibson-Raymond, Inc., 6400 Miller Avenue, Detroit, Mich., U.S.A. Gentlemen, Thank you for your letter of September 28th and your… | ||
| scan0065 | Graph plotting the average stress range for good carbon steel wire against various automotive components. | ||
| View original record | ELASTIC LIMIT ENDURANCE LIMIT STRESS, THOUSAND LBS. PER SQ. INCH. STRESS, THOUSAND LBS. PER SQ.INCH. FIG. 2 AVERAGE STRESS RANGE FOR GOOD CARBON STEEL WIRE. PONTIAC 495096 NASH 28060 NASH 46654 NASH… | ||
| scan0066 | Fatigue limit diagram for Steel #1, with stresses calculated by the Wahl formula. | ||
| View original record | FINAL STRESS, THOUSAND LBS. PER SQ. INCH. INITIAL STRESS, THOUSAND LBS. PER SQ. INCH. ENDURANCE LIMIT ELASTIC LIMIT NO. 1, 6, 7, BROKEN NO. 2, 3, 4, 5, 8, 9, 10, UNBROKEN FIG. 3. FATIGUE LIMIT DIAGRAM… | ||
| scan0067 | Stress-Strain diagram for Steel #1, showing Torsion and Tension curves and material properties. | ||
| View original record | STRESS, THOUSAND LBS. PER SQ. INCH DEGREES TORQUE TORSION CURVE STRESS, THOUSAND LBS. PER SQ. INCH. INCHES ELONGATION TENSION CURVE Figure 4 Stress-Strain Diagram for Steel #1 Ultimate strength… | ||
| scan0068 | Fatigue limit diagram for Steel #1A, with stresses calculated by the Wahl formula. | ||
| View original record | FINAL STRESS, THOUSAND LBS. PER SQ. INCH. INITIAL STRESS, THOUSAND LBS. PER SQ. INCH. ENDURANCE LIMIT ELASTIC LIMIT NO. 14, BROKEN NO. 11, 12, 13, UNBROKEN Figure 5. Fatigue Limit Diagram for Steel… | ||
| scan0069 | Stress-strain diagram for Steel #1, showing both torsion and tension curves. | ||
| View original record | 41360 STRESS, THOUSAND LBS. PER SQ. INCH DEGREES TORQUE TORSION CURVE STRESS, THOUSAND LBS. PER SQ. INCH INCHES ELONGATION TENSION CURVE Figure 6. Stress-Strain Diagram for Steel #1. Ultimate strength… | ||
| scan0070 | Fatigue limit diagram for pretempered wire steel #4. | ||
| View original record | FINAL STRESS, THOUSAND LBS. PER SQ. INCH. INITIAL STRESS, THOUSAND LBS. PER SQ. INCH. ENDURANCE LIMIT ELASTIC LIMIT NO. 1, 2, 5, 7, BROKEN NO. 3, 4, 6, 8, UNBROKEN Figure 7. Fatigue Limit Diagram for… | ||
| scan0071 | Stress-strain diagram for pretempered wire steel, showing both tension and torsion curves. | ||
| View original record | TENSION CURVE INCHES ELONGATION STRESS, THOUSAND LBS. PER SQ. INCH. INCHES ELONG. DEGREES TORQUE TORSION CURVE. Figure 8. Stress-Strain Diagram for Pretempered Wire Steel #4. Ultimate strength 216,000… | ||
| scan0072 | Fatigue limit diagram for pretempered wire steel, with stresses calculated by the Wahl formula. | ||
| View original record | FINAL STRESS, THOUSAND LBS. PER SQ. INCH. INITIAL STRESS, THOUSAND LBS. PER SQ. INCH. ENDURANCE LIMIT APPROX. ELASTIC LIMIT NO. 1, 3, 5, BROKEN NO. 2, 4, 6, UNBROKEN Figure 9. Fatigue Limit Diagram… | ||
| scan0073 | Stress-strain diagram for pretempered wire steel #7, showing tension and torsion curves. | ||
| View original record | STRESS, THOUSAND LBS. PER SQ. INCH. INCHES ELONGATION TENSION CURVE DEGREES TORQUE TORSION CURVE Figure 10. Stress-Strain Diagram for Pretempered Wire Steel #7. Ultimate strength 203,400 P.S.I.… | ||
| scan0074 | Fatigue limit diagram for special tempered steel number 11. | ||
| View original record | FINAL STRESS, THOUSAND LBS. PER SQ. INCH. INITIAL STRESS, THOUSAND LBS. PER SQ. INCH. Figure 11. Fatigue Limit Diagram for Special Tempered Steel #11. All stresses calculated by Wahl formula.… | ||
| scan0075 | Stress-strain diagram for Special Tempered Steel #11, showing both tension and torsion curves. | ||
| View original record | STRESS, THOUSAND LBS. PER SQ. INCH. TENSION CURVE TORSION CURVE INCHES ELONGATION DEGREES TORQUE Figure 12. Stress-Strain Diagram for Special Tempered Steel #11. Ultimate strength 194,000 P.S.I.… | ||
| scan0076 | Fatigue limit diagram for special cold drawn spring steel #12, with stresses calculated by Wahl formula. | ||
| View original record | FINAL STRESS, THOUSAND LBS. PER SQ. INCH. INITIAL STRESS, THOUSAND LBS. PER SQ. INCH. ENDURANCE LIMIT ELASTIC LIMIT 1T 2 3T 4 5T 6 NO. 1, 3, 5, BROKEN NO. 2, 4, 6, UNBROKEN Figure 13. Fatigue Limit… | ||
| scan0077 | Stress-strain diagram for special cold drawn spring steel #12, showing tension and torsion curves. | ||
| View original record | STRESS, THOUSAND LBS. PER SQ. INCH. INCHES ELONGATION TENSION CURVE STRESS, THOUSAND LBS. PER SQ. INCH. DEGREES TORQUE TORSION CURVE Figure 14. Stress-Strain Diagram for Special Cold Drawn Spring… | ||
| scan0078 | Fatigue limit diagram for Silico-Manganese Steel #8. | ||
| View original record | FINAL STRESS, THOUSAND LBS. PER SQ. INCH. INITIAL STRESS THOUSAND LBS. PER SQ. INCH. ENDURANCE LIMIT ELASTIC LIMIT NO. 2,3,4,BROKEN NO. 1,5,6,7,8,UNBROKEN Figure 15. Fatigue Limit Diagram for… | ||
| scan0079 | Stress-Strain diagram for Silico-Manganese Steel #8, showing tension and torsion curves. | ||
| View original record | STRESS, THOUSAND LBS. PER SQ. INCH. INCHES ELONGATION TENSION CURVE DEGREES TORQUE TORSION CURVE Figure 16. Stress-Strain Diagram for Silico-Manganese Steel #8. Ultimate strength 190,000 P.S.I.… | ||
| scan0080 | Stress-strain diagram for Stainless Steel #9, showing tension and torsion curves. | ||
| View original record | STRESS, THOUSAND LBS PER SQ. INCH. INCHES ELONGATION TENSION CURVE DEGREES TORQUE TORSION CURVE Figure 17. Stress-Strain Diagram for Stainless Steel #9. Ultimate strength 216,000 P.S.I. Tension… | ||
| scan0081 | Fatigue limit diagram for stainless steel calculated by Wahl formula. | ||
| View original record | FINAL STRESS, THOUSAND LBS. PER SQ. INCH. INITIAL STRESS, THOUSAND LBS. PER SQ. INCH. ENDURANCE LIMIT NO. 1, 2, 3, 5, 7, BROKEN NO. 4, 6, 8, UNBROKEN Figure 18. Fatigue Limit Diagram for Stainless… | ||
| scan0082 | Fatigue limit diagram for High Manganese Steel #13, with stresses calculated by Wahl formula. | ||
| View original record | FINAL STRESS, THOUSAND LBS. PER SQ. INCH. INITIAL STRESS, THOUSAND LBS. PER SQ. INCH. ENDURANCE LIMIT ELASTIC LIMIT 1 2 3 4 NO. 1, 3, BROKEN NO. 2, 4, UNBROKEN Figure 19. Fatigue Limit Diagram for… | ||
| scan0083 | Stress-strain diagram for High Manganese Steel #13, detailing tension and torsion curves. | ||
| View original record | STRESS, THOUSAND LBS. PER SQ. INCH. TENSION CURVE INCHES ELONGATION TORSION CURVE DEGREES TORQUE Figure 20. Stress-Strain Diagram for High Manganese Steel #13. Ultimate strength 204,000 P.S.I. Tension… | ||
| scan0084 | Letter from Coventry Climax Engines Ltd. regarding the delayed announcement of the Skinner Slide Valve Engine. | ||
| View original record | 81360. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY COVENTRY CLIMAX ENGINES LTD INTERNAL COMBUSTION ENGINE MANUFACTURERS TELEGRAMS "CLIMAX"… | ||
| scan0085 | Letter from Barnes-Gibson-Raymond forwarding three lots of spring samples for testing. | ||
| View original record | B-V usa BARNES-GIBSON-RAYMOND DIVISION OF ASSOCIATED SPRING CORPORATION MANUFACTURERS OF SPRINGS OF ALL DESCRIPTIONS 6400 MILLER AVENUE DETROIT, MICH. ->1360 October 19, 1936. Rolls - Royce, Ltd.,… | ||
| scan0086 | Improving carbon steel wire production methods and commissioning experiments with supplier Geo. Fox & Co. | ||
| View original record | SG. C. Hs. C. Rm. X1360 BY.S/G.27.10.36. GRY LCSmith CARBON STEEL WIRE. ------------------ As a result of our discussion at the last Conference I have been giving the question of the carbon steel wire… | ||
| scan0087 | Letter to The Tempered Spring Co. Ltd. requesting a trial production of 24 valve springs from 'Low carbon steel'. | ||
| View original record | 81380 Rm/Swdl.8/MA. 27th October, 1936. The Tempered Spring Co.Ltd., Burton Weir Works, Sheffield, 4. Dear Sirs, In confirming our conversation held at the show, we should be pleased if you would make… | ||
| scan0088 | Specification and analysis sheet for a valve spring outer. | ||
| View original record | X1360 OCT 23 1936 BRITISH BOND VAUXHALL MOTORS LIMITED SPECIFICATION SHEET (Miscellaneous Parts & Materials) Part Name: Valve Spring - Outer. Date: 14/5/36. Part No. 1084410-S. Swedish spring Steel… | ||
| scan0089 | Sourcing Hard Drawn Piano Wire for valve springs and clarifying the oil tempering process. | ||
| View original record | X1360 To: [redacted] GRH Fm: [redacted] L.E. Smith BY.1/J.28.10.36. VALVE SPRINGS. With reference to your memo E.2/HP.23.10.36, we wish to confirm that we are getting in touch with the firms… | ||
| scan0090 | Letter from The Tempered Spring Company Limited regarding the production of twenty-four trial valve springs. | ||
| View original record | SWDL. Relles ALL COMMUNICATIONS SHOULD BE ADDRESSED TO THE COMPANY AND NOT TO INDIVIDUALS 1860 THE TEMPERED SPRING COMPANY LIMITED MANAGING DIRECTOR: S. J. YOUNG M.INST.C.E. TELEPHONE 21333 SHEFFIELD… | ||
| scan0091 | Letter to Coventry Climax Engines expressing interest in their Overhead Inlet Side Valve Exhaust Units. | ||
| View original record | 87360 Experimental Department 29th October 1936. Rm.3/AP. LPL/NM. Messrs Coventry Climax Engines Ltd., Friars' Road, COVENTRY Dear Sirs, With reference to your letter of the 14th inst. and subsequent… | ||
| scan0092 | Request to purchase and test Ford V-8 valve tappets for material and hardness analysis. | ||
| View original record | Pailes 1360 To BY. SWDL E/PSN.2/MN.31.10.36. Copy to Rm. ~~Dr.~~ RHC. Valve Tappet Material. We should be pleased if you would arrange for the purchase of a number of Ford V-8 tappets which could be… | ||
| scan0093 | Inquiry to The Tempered Spring Co. Ltd. regarding the manufacturing process of valve springs. | ||
| View original record | Y 1360 Expl. Dept. Rm.10/MJ. 2nd. November, 1936. The Tempered Spring Co. Ltd., Burton Weir Works, Attercliffe Road, SHEFFIELD. Dear Sirs, We understand that you are producing valve springs from… | ||
| scan0094 | Inquiry to The Lion Spring Co. regarding the manufacturing process of valve springs made from Swedish wire. | ||
| View original record | 1360 Expl. Dept. Rm.11/MJ. 2nd. November, 1936. The Lion Spring Co., Oldbury, BIRMINGHAM. Dear Sirs, We understand that you are producing valve springs from Swedish wire. We are interested to know… | ||
| scan0095 | Order for valve springs from the Vauxhall Co. | ||
| View original record | To Roy. From Rm. J1360 Rm.24/MJ.2.11.36. Will you please order from the Vauxhall Co., - 1 Dozen Valve springs to Part No.1034410 as per the attached drawing. Rm. | ||
| scan0096 | Letter from The Tempered Spring Co. Ltd. regarding the production of valve springs from special Swedish wire. | ||
| View original record | X.360 Telephone: 21333 SHEFFIELD. PRIVATE BRANCH EXCHANGE. Telegrams: TEMPERED SHEFFIELD. CODES: A.B.C. 5TH EDITION. BENTLEYS. CONTRACTORS TO THE ADMIRALTY, WAR OFFICE, INDIA OFFICE. CROWN AGENTS FOR… | ||
| scan0097 | Letter from Vauxhall Motors Ltd acknowledging receipt of a letter but requesting a copy of a missing report. | ||
| View original record | X1360 Vauxhall Motors Ltd CONTRACTORS TO THE ADMIRALTY, WAR OFFICE & AIR MINISTRY. TELEPHONE NUMBER 2600 LUTON. LUTON. BEDS. TELEGRAMS CARVAUX, TELEX, LUTON WHEN REPLYING PLEASE QUOTE OUR REF: Rm6/MJ… | ||
| scan0098 | Letter to Vauxhall Motors Ltd. enclosing a Micro-Examination Report on a valve spring. | ||
| View original record | X1360 Rm12/R. 4th November, 1936. Vauxhall Motors Ltd., Luton, BEDS: For the attention of Mr. J.E. Ellis. Dear Sirs, In reply to your letter of the 3rd November, we enclose herewith our… | ||
| scan0099 | Letter to The Tempered Spring Co., Ltd. requesting a delivery date for 24 valve springs. | ||
| View original record | K1360 Rm11/GR. 4th November, 1936. The Tempered Spring Co.,Ltd., Burton Weir Works, SHEFFIELD. Dear Sirs, Your Reference: RT/GG. Thank you for your letter of the 3rd instant. You will recollect that… | ||
| scan0100 | Valve spring particulars for Rover vehicles, listing suppliers. | ||
| View original record | Y1360 VALVE SPRING PARTICULARS FOR ROVERS. Tempered Spring Co. Ltd. Burton Weir Works. Attencliffe Road. SHEFFIELD. Lion Spring Co. Oldbury. BIRMINGHAM. ABERMILL BOND | ||
| scan0101 | Letter from The Lion Spring Company regarding the manufacturing process of valve springs from Swedish wire. | ||
| View original record | TELEGRAMS: "SPRINGS, OLDBURY." TELEPHONE: BROADWELL 1073. TRADE MARK X1360 CONTRACTORS TO ADMIRALTY, WAR OFFICE, AIR MINISTRY, &C. THE LION SPRING COMPANY, Ltd., ESTABLISHED 1895. Manufacturers of… | ||
| scan0102 | Request to The Lion Spring Co. Ltd. for trial valve springs made from low carbon steel. | ||
| View original record | 1360 Exptl. Dept. Rm/Swdl.25/JH. 5th November, 1936. The Lion Spring Co.Ltd., Oldbury, Birmingham. Dear Sirs, We should be pleased if you could make for us for trial, 24 inner and 24 outer valve… | ||
| scan0103 | Letter from The Tempered Spring Co. Ltd. regarding a delay in despatching special valve springs. | ||
| View original record | x1360 Hiles CONTRACTORS TO THE ADMIRALTY, WAR OFFICE, INDIA OFFICE. CROWN AGENTS FOR THE COLONIES, HOME AND FOREIGN RAILWAYS. Telephone: 21333 SHEFFIELD. PRIVATE BRANCH EXCHANGE. Telegrams: TEMPERED… | ||
| scan0104 | Request to pass an official order to The Tempered Spring Co. Ltd. for 24 valve springs for Bentley. | ||
| View original record | 1360 To Roy. from Rm/Swdl. c. to G/JWH. Rm/Swdl.34/AP.16.11.36. Will you please pass an official order to - The Tempered Spring Co.Ltd., Burton Weir Works, Sheffield 4. for 24 valve springs to Rm.53.… | ||
| scan0105 | Letter to The Tempered Spring Co. Ltd. acknowledging receipt of 24 valve springs for an Endurance engine test. | ||
| View original record | 1360 Experimental Department 16th November 1936. Rm/Swdl.26/AP. Messrs. The Tempered Spring Co.Ltd., Burton Weir Works, SHEFFIELD 4. Dear Sirs, We thank you for the 24 valve springs which you have… | ||
| scan0106 | Letter to The Tempered Spring Co. regarding a failed valve spring and an urgent order for new ones. | ||
| View original record | 1360 Experimental Dept. Rm/Swdl.17/JH. 24th November, 1936. The Tempered Spring Co., Burton Weir Works, Sheffield 5. Dear Sirs, We have run a set of the "low carbon" valve springs which you supplied… | ||
| scan0107 | Letter to The Tempered Spring Co. discussing the laboratory analysis of a broken valve spring and requesting a delivery date for a new order. | ||
| View original record | 1360. Experimental Dept. Rm/Swdl.14/JH. 28th November, 1936. The Tempered Spring Co. Burton Weir Works, Sheffield 4. Dear Sirs, Since receiving your letter of the 25th, we have had the broken valve… | ||
| scan0108 | Letter to The Tempered Spring Co. about a delay in receiving sample springs and a request for an additional set. | ||
| View original record | 1360 Experimental Dept. Rm/Swdl.4/JH. 4th December, 1936. The Tempered Spring Co., Burton Weir Works, Sheffield.4. Dear Sirs, Up to the moment we have not received the 24 sample springs, but from your… | ||
| scan0109 | Requesting official orders to be placed for two sets of 24 valve springs. | ||
| View original record | 1360 To Roy. c. to G/JWH. Rm/Swd1.2/JH.4.12.36. Will you please pass an Official Order to the Tempered Spring Co., Burton Weir Works, Sheffield.4. for 24 Bentley valve springs to Rm.260 which we have… | ||
| scan0110 | Acquisition and proposed testing of Swedish wire for various engine valve springs. | ||
| View original record | Files Swell Hs. c.Rm. c.F. 1360 BY/EM.17/J.17.12.36. SWEDISH WIRE FOR VALVE SPRINGS. ------------------------------- We have now obtained from Sweden small supplies of wire hardened and tempered in… | ||
| scan0111 | Letter to The Tempered Spring Co. regarding the receipt and testing of a batch of valve springs. | ||
| View original record | 1360 Experimental Department 17th December 1936. Rm/Swdl.10/AP. The Tempered Spring Co., Burton Weir Works, SHEFFIELD 4. Dear Sirs, We thank you for the last batch of valve springs which arrived on… | ||
| scan0112 | Requesting an order of Swedish wire for making new Phantom III single valve springs. | ||
| View original record | To EY/EM. Copy to Mr. Rm. Files 1360 E/PSN.2/MN.22.12.36. Swdll SWEDISH WIRE FOR VALVE SPRINGS. ============================== Re your memo. EY/EM.15/J.10.11.36, in which you inform us that you have… | ||
| scan0113 | The substitution of Ubas steel with a low carbon case hardening mild steel for chassis parts. | ||
| View original record | ROYCE C.R. C.Rm. C.HDG. 1360 BY/EM.7/J.22.12.36. LOW CARBON CASE HARDENING MILD STEEL TO SPEC.226. ------------------------------------------------ We understand that the Design Dept. are still… | ||
| scan0114 | Extract from a letter received from the Rover Co. concerning complaints of broken valve springs. | ||
| View original record | 1360 23.12.36. EXTRACT FROM LETTER RECEIVED FROM THE ROVER CO. Dated 29th Oct. Valve Springs. There has only been one complaint from an owner during 1936 of valve springs broken and that was only… | ||
| scan0115 | Micro-examination report investigating a broken valve spring from a Bentley B-114-HK. | ||
| View original record | 1360. Micro-Examination Report. M.1245. To Rm. BY. (handwritten and crossed out) c. Rm/Swdll. (handwritten and crossed out) c. Rm/GWH. (handwritten and crossed out) HL2/AG.30.12.36. Laboratory. Re:… | ||
| scan0116 | Requesting the experimental production of chassis valve springs from Swedish wire. | ||
| View original record | P. Hiles SWH 1360 E. Dept. c. Rm. CHASSIS VALVE SPRINGS. ------------------- With reference to memo Rm/Swdl.1/AP.24.12.36. will you kindly instruct experimentally three sets of valve springs to… | ||
| scan0117 | Valve lubrication schemes, specifically the wedge and felt systems, in relation to a 15,000-mile test on the 35-EX model. | ||
| View original record | 1360. E. from Rm. Rm7/R.15.1.37. VALVE LUBRICATION P.III. We would be more enthusiastic about the wedge scheme if RHC. had not told us he thought it was an extravagant way of doing the job. We are in… | ||
| scan0118 | Confirming an urgent request for differentially coiled valve springs made from carbon wire. | ||
| View original record | 1360 By. from Rm. Rm19/R.28.1.37. VALVE SPRING. This is to confirm that we are urgently awaiting differentially coiled valve springs made in carbon wire at R.R. We shall be glad to know whether you… | ||
| scan0119 | Status of coiling differentially-coiled valve springs, awaiting material from Sweden. | ||
| View original record | Side SWDC ?1360. Rm. BY/Cgh.5/W.30.1.37. Chassis : Valve Springs. In reply to Rm.19/R.28.1.37, everything is ready for coiling the differentially-coiled valve springs immediately we receive material… | ||
| scan0120 | Letter to The Tempered Spring Co. regarding the satisfactory performance of 'Swedish Wire' springs and a request for further sets for testing. | ||
| View original record | J 1360 Experimental Department 10th February 1937. Rm/Swdl.6/AP. The Tempered Spring Co., Burton Weir Works, SHEFFIELD 4. Dear Sirs, Since last writing to you, we have continued our running on the… | ||
| scan0121 | Request and confirmation to order 6 sets (72) of valve springs from the Tempered Spring Co. | ||
| View original record | 1360 To Roy. c. to G/JWH. Rm/Swdl.10/JH.15.2.37. Will you please order 6 sets (72) of valve springs in Swedish wire to Rm.260 from the Tempered Spring Co., Burton Weir Works, Sheffield.4. This in… | ||
| scan0122 | New, closely coiled valve springs made from Swedish wire, requesting they be fitted to B-17 and B-9 test engines. | ||
| View original record | To HPS. 1360 Rm/Swd1.11/JH.15.2.37. VALVE SPRINGS. We now have some closely coiled valve springs produced by R.R. from Swedish wire bought direct from Sweden. These are to Rm.260 which other than the… | ||
| scan0123 | Valve spring failure during testing on a Bentley unit. | ||
| View original record | 1360. To Hl. from Rm/Swdl. Rm/Swdl.3/AP.22.2.37. VALVE SPRINGS. We have sent into Mr.Whitehead a valve spring which has failed on test after 3 hours running at 4000 R.P.M. on a Bentley unit. The… | ||
| scan0124 | Correspondence with The Tempered Spring Co. regarding the receipt and outstanding order of springs. | ||
| View original record | 1360. Experimental Department 22nd. February 1937. Rm/Swdl.6/AP. The Tempered Spring Co., Burton Weir Works, SHEFFIELD 4. Dear Sirs, We thank you for the 2 sets of Rm.315/6/7/8 springs which we have… | ||
| scan0125 | Official order to be placed with the Tempered Spring Co. | ||
| View original record | 1360. To Roy. from Rm/Swdl. c. to G/JWH. Rm/Swdl.7/AP.22.2.37. Will you please pass an official order to the Tempered Spring Co. for the following springs which we have received in response to our… | ||
| scan0126 | Letter from the Experimental Department to H.S. Burn Esq. regarding the 'Cross Rotary Valve'. | ||
| View original record | Experimental Dept. Rm/Swdl.15/JH. 23th February, 1937. H.S.Burn Esq. (Personal). The Imperial Tobacco Co., Bristol. Dear Sir, We thank you for your letter of the 18th instant together with the booklet… | ||
| scan0127 | Letter from The Imperial Tobacco Company regarding arranging an interview to discuss the Cross Rotary Valve Gear. | ||
| View original record | Files 1360. MH. TELEPHONE: BRISTOL 64071. TELEGRAMS: "SMOKES". PERSONAL THE IMPERIAL TOBACCO COMPANY (of Great Britain and Ireland) Limited BRISTOL, 3. 24th February 1937. SWgL S.H. Grylls, Esq.,… | ||
| scan0128 | Micro-examination report on a Bentley valve spring, concluding a mechanical failure rather than a material fault. | ||
| View original record | 1360 Micro-Examination Report. M.1265. To Rm. Rm/Swdl HL2/AG.26.2.37. Laboratory. Re: BENTLEY VALVE SPRING. (Your ref: Rm/Swdl.3/AP.22.2.37.) We have examined this spring in the usual way. The Brinell… | ||
| scan0129 | Clarifying the facts regarding the testing and performance of different types and materials of valve springs. | ||
| View original record | Hives 1360. BY.2/G.4.5.37. c. Rm. Please see me VALVE SPRINGS. It occurred to me at the Conference on Tuesday last that the actual facts of the case in regard to the chrome vanadium wire as against… | ||
| scan0130 | Reliability and failures of different steel wires used for springs. | ||
| View original record | - 2 - In reviewing the situation therefore, whilst we agree that heat treated and tempered carbon steel wire combined with the modified form of spring which prevents surging or periods, is giving good… | ||
| scan0131 | Experiments and testing of new valve springs made from 'Swedish wire' versus standard springs. | ||
| View original record | 1360. Sg. from Rm/Swdl. c. to Hs. c. to By. Rm/Swdl.8/R.5.3.37. VALVE SPRINGS. The tenor of the memo By2/G.4.3.37. appears to be that the "Swedish wire" is not up to the standard of our normal… | ||
| scan0132 | The testing and comparison of different engine springs made from Swedish wire and Chrome-vanadium. | ||
| View original record | -2- Rm/Swdl.8/R.5.3.37. (3) This Rm.260 drawing was copied by the D.O. to EB.3256, and springs coiled here in Swedish wire bought from the Tempered Spring Co. On the rig, as Hy. states, two of these… | ||
| scan0133 | Letter from The Imperial Tobacco Company arranging a meeting with Mr. G. H. Grylls. | ||
| View original record | Royds Files 1360 NATIONAL SCHEME FOR DISABLED MEN TELEPHONE: BRISTOL 64071 TELEGRAMS: "SMOKES" BP. THE IMPERIAL TOBACCO COMPANY (of Great Britain and Ireland) Limited BRISTOL, 3. 5th March 1937. G. H.… | ||
| scan0134 | Letter from The Imperial Tobacco Company to G.H. Grylls arranging a meeting in Derby. | ||
| View original record | [Handwritten]: Loder Sudd [Handwritten]: 1360. [Crest]: NATIONAL SCHEME FOR DISABLED MEN [Handwritten]: MH. TELEPHONE: BRISTOL 64071. TELEGRAMS: "SMOKES." THE IMPERIAL TOBACCO COMPANY (of Great… | ||
| scan0135 | Letter to The Imperial Tobacco Co. Ltd. enclosing an arrangement drawing for a 25 HP unit and discussing rotary valve adaptation. | ||
| View original record | 1360.. Experimental Dept. Rm/Swdl.14/JH. 19th March, 1937. PERSONAL. H.S.Burns Esq., The Imperial Tobacco Co.Ltd., Bristol.3. Dear Sirs, As arranged during your recent visit to us, we enclose an… | ||
| scan0136 | Letter from The Imperial Tobacco Company regarding a drawing for a 25 HP unit. | ||
| View original record | Files 1360. MH. PERSONAL THE IMPERIAL TOBACCO COMPANY (of Great Britain and Ireland) Limited. TELEPHONE: BRISTOL 64071. TELEGRAMS: 'SMOKES'. BRISTOL, 3. 22nd March 1937. L.H. Swindall, Esq., c/o Rolls… | ||
| scan0137 | Request for the examination of two failed valve springs, one from a Bentley and one from a Phantom III. | ||
| View original record | To H1/Mr.Whitehead. 1360. Rm/Swdl.7/AP.25.3.37. VALVE SPRINGS. Will you please examine and give the results of your observation on the failure of the two springs which we send herewith. The records of… | ||
| scan0138 | Letter concerning an adaptation of a rotary valve design. | ||
| View original record | Poles 1360 CROSS ROTARY VALVE PATENTS. PROPRIETORS: R. C. CROSS AND THE CROSS MANUFACTURING Co., LTD. THE SOCIETY OF MOTOR MANUFACTURERS AND TRADERS LTD SMMT (Logo) R. C. CROSS, 33 MIDFORD ROAD, COMBE… | ||
| scan0139 | Micro-examination report on a failed Phantom III valve spring and a satisfactory Bentley valve spring. | ||
| View original record | Micro-Examination Report. 1360 M.1299. To Rm. / Swdl. HL.6/AG.1.4.37. Laboratory. Re: VALVE SPRINGS. (Your ref: Rm/Swdl.7/AP.25.3.37) The two springs examined have been examined :- Phantom III Spring.… | ||
| scan0140 | The despatch of two springs to The Tempered Spring Co. for examination. | ||
| View original record | 1360 To D/BP. from Rm/Swdl. c. G/Mt. Rm/Swdl.18/AP.27.5.37 We are sending into the Stores 2 springs Rm.260. Will you please despatch these to The Tempered Spring Co., Burton Weir Works, Sheffield 4,… | ||
| scan0141 | Letter to The Tempered Spring Co. regarding the failure of Rm.260 springs during testing and their return for analysis. | ||
| View original record | 136 o May 27th 1937 Rm/Swdl.17/AP. The Tempered Spring Co., Burton Weir Works, SHEFFIELD 4. Dear Sirs, Although we have satisfactorily carried out long periods of running on several chassis with the… | ||
| scan0142 | Letter from R.C. Cross regarding a rotary valve design for a 25 HP unit. | ||
| View original record | 1360? CROSS ROTARY VALVE PATENTS. PROPRIETORS: R. C. CROSS AND THE CROSS MANUFACTURING CO., LTD. [STAMP: THE SOCIETY OF MOTOR MANUFACTURERS & TRADERS LTD M&M] R. C. CROSS, 33 MIDFORD ROAD, COMBE DOWN,… | ||
| scan0143 | Concluding page of a letter regarding the efficiency and performance of a specific design. | ||
| View original record | -2- Messrs. Rolls-Royce Ltd., Messrs.G. H. Grylls and L. H. Swindall. 28th May, 1937. ---------------------------------------------------------------- I consider the design in question should be very… | ||
| scan0144 | Design proposal for adapting a cross rotary valve system to a 25 HP engine. | ||
| View original record | Cross Rotary Valve Design for Adaptation to 25 H.P. Rolls Engine. --------------------------------------------------------------- The design provides for valves to be disposed co-axially along the top… | ||
| scan0145 | Design document for a cross rotary valve for a 25 HP engine. | ||
| View original record | Cross Rotary Valve Design for Adaptation to 25 H.P. Rolls Engine. -------------------------------------------------------------- The design provides for valves to be disposed co-axially along the top… | ||
| scan0146 | Letter to The Tempered Spring Co. Ltd. regarding failures of RM.260 valve springs and requesting their findings. | ||
| View original record | 1360 Experimental Dept. Rm/Swdl.9/JH. 3rd June, 1937. The Tempered Spring Co.Ltd., Burton Weir Works, Sheffield.4. Dear Sirs, In reply to your letter of the 1st. inst., the engine for which we require… | ||
| scan0147 | Describing a valve lift indicator for testing Bentley and Phantom III engines. | ||
| View original record | To HPS. Copy to Rm. Rm/Edwards. 1360 E/PSN/CDC.1/M.5.6.37. VALVE LIFT INDICATOR. We send you herewith LeC.5480 showing an indicator which is to be used for valve lift tests on the Bentley and Phantom… | ||
| scan0148 | Required parts and drawings for proceeding with a test on a Bentley engine. | ||
| View original record | -2- E/PSN/CDC.1/M.5.6.37. It has been decided to proceed first with the test on the Bentley, so we send you also LeC.5435 showing the method of preventing rotation of the valve top washer, also… | ||
| scan0149 | Letter to The Tempered Spring Co. regarding failed springs and a new order for Rm.260 springs. | ||
| View original record | 1360 Experimental Department June 8th 1937 Rm/Swdl.8/AP. The Tempered Spring Co., Burton Weir Works, SHEFFIELD 4 Dear Sirs, We are still anxiously awaiting your findings regarding the two failed… | ||
| scan0150 | Official covering order for valve springs. | ||
| View original record | To Roy. from Rm/Swdl. c. G/JWH. 1360 Rm/Swdl.7/AP.8.6.37 We have ordered by letter today 6 sets (72) valve springs to Rm.260 from The Tempered Spring Co., Burton Weir Works, Sheffield 4., will you… | ||
| scan0151 | Instruction to manufacture valve springs using recently purchased wire from Sweden. | ||
| View original record | To By/EM. from Rm/Swdl. 1360 Rm/Swdl.2/AP.10.6.37 VALVE SPRINGS Will you please instruct for the following valve springs to be made as soon as possible in the wire that was recently bought direct from… | ||
| scan0152 | The failure of rocker shafts on Bentley and Phantom III models, concluding it is due to improperly tightened nuts. | ||
| View original record | To Hd. FOR DEPOT SHEET. 1360 Rm/Swdl.18/JH.11.6.37. Failure of rocker shafts. In view of the several failures we have recently had at the section of the pedestal stud holes of the rocker shafts on… | ||
| scan0153 | Response letter to Mr. R.C. Cross regarding the claims for his Rotary Valve design. | ||
| View original record | 1360 Rm3/R. 14th June, 1937. Mr. R.C. Cross, 33, Midford Road, Combe Road, Combe Down, B A T H. Dear Sir, We thank you for your letter of the 28th May referring to a visit paid to this Factory during… | ||
| scan0154 | Blueprint detailing the adaptation of a 'Cross' rotary valve and drive arrangement for a 3.5 litre, six-cylinder engine. | ||
| View original record | VIEW ON 'A' ADAPTATION OF 'CROSS' ROTARY VALVE TO 3.5 LITRE, SIX CYLINDER, ENGINE ARRANGEMENT OF DRIVE TO ROTARY VALVES. R. C. CROSS, CONSULTING ENGINEER. 33, MIDFORD ROAD, COMBE DOWN, BATH DRG No 980 | ||
| scan0155 | Adaptation of a cross rotary valve to a 3.5 litre, six-cylinder engine. | ||
| View original record | SECTION AA SECTION BB SECTION CC ROTARY VALVE TO 3.5 LITRE, SIX CYLINDER ADAPTATION OF CROSS ROTARY VALVE TO 3.5 LITRE, SIX CYLINDER ENGINE DRAWN A.E.C TRACED E.L.E CHECKED H.R.C DATE 24-5-37 R.C.… | ||
| scan0156 | Specification sheet detailing valve timings for various camshafts. | ||
| View original record | To Rm VALVE TIMINGS. 1360 14.6.37 (1) Standard 30.HP. camshaft .020" tappet clearance. IO 6° PTDC. E.O. 44° BBDC. IC 44° PBDC. E.C. 9° PTDC. (2) Wraith II. Camshaft .020" tappet clearance. IO 6° PTDC.… | ||
| scan0157 | Letter from R.C. Cross regarding tests on an experimental engine using an adapted Austin Eighteen car. | ||
| View original record | CROSS ROTARY VALVE PATENTS. PROPRIETORS: R. C. CROSS AND THE CROSS MANUFACTURING Co., LTD. [Stamp: THE SOCIETY OF MOTOR MANUFACTURERS & TRADERS LTD] R. C. CROSS, 33 MIDFORD ROAD, COMBE DOWN, BATH.… | ||
| scan0158 | Page 2 of a letter to W. A. Robotham regarding demonstrating results with an Austin Eighteen car. | ||
| View original record | -2- W. A. Robotham, Esq. 18th June, 1937. ------------------------------------------------------ I hope to be able to demonstrate satisfactory results to you during the next month or five weeks with… | ||
| scan0159 | Request for a resumé of the general progress on valve springs. | ||
| View original record | 1360 Rm/Swdl.from Rm. Rm12/R.18.6.37. I should like a resumé of our general progress on valve springs. Rm. | ||
| scan0160 | Letter from ironfounders C. & B. Smith Ltd regarding the production of 24 experimental chilled face tappet castings. | ||
| View original record | [Handwritten notes at top: Roy, Files, 1360] C. & B. SMITH LTD IRONFOUNDERS STEWART ST, WOLVERHAMPTON DIRECTORS CLIFFORD R. SMITH A. BARTLETT SMITH TELEPHONES 21431 (3 LINES) TELEGRAMS FOUNDRY… | ||
| scan0161 | Letter to The Tempered Spring Co. requesting information on the failure of two springs. | ||
| View original record | Rm/Swdl.2/AP. Experimental Department 1st July 1937 The Tempered Spring Co., Burton Weir Works, SHEFFIELD 4. 1360 Dear Sirs, We are still anxious to know if you have any further information to hand… | ||
| scan0162 | Experiments and findings regarding valve spring reliability and suppliers. | ||
| View original record | To E. from Rm/Swdl. c. to Sg. c. Hs. c. By. VALVE SPRINGS. The position of our experiments with regard to valve springs is as follows:- (1) That in the uneven coiled form, springs made by the Tempered… | ||
| scan0163 | Trial of spring rings to prevent valve over-oiling, which proved less effective than the standard grummet. | ||
| View original record | To Hs. from Rm/Swdl. 1360 Rm/Swd1.6/AP.2.7.37 SUGGESTED PREVENTION OF VALVE OVEROILING. Regarding the above suggestion from W.Hart (Check No. 7821) this has been tried in the form of spring rings in… | ||
| scan0164 | Letter of recommendation from Vauxhall Motors for Mr. Stenhouse, a specialist in springs. | ||
| View original record | Vauxhall Motors Ltd CONTRACTORS TO THE ADMIRALTY, WAR OFFICE & AIR MINISTRY. TELEPHONE NUMBER 2600 LUTON. LUTON. BEDS. TELEGRAMS CARVAUX, TELEX, LUTON WHEN REPLYING PLEASE QUOTE OUR REF: AT/SEE YOUR… | ||
| scan0165 | Letter to Mr. A.C. Stenhouse inviting him for a discussion on valve springs. | ||
| View original record | 1360 Rml/R. 8th July, 1937. Mr. A.C. Stenhouse, Riggside, North Road, Bellshill, Lanarkshire. Dear Sir, I have just received a letter from Mr. Taub of Vauxhall Motors Ltd. saying that you have been… | ||
| scan0166 | Letter from the Experimental Department chasing a delayed delivery of experimental tappets. | ||
| View original record | 136 Experimental Department July 9th 1937 Rm/Swdl.6/AP. Messrs C. & B.Smith Ltd., Ironfounders, Stewart Street, WOLVERHAMPTON. Dear Sirs, It was not until the last few days that I saw your reply of… | ||
| scan0167 | Letter to Messrs C. & B. Smith Ltd. acknowledging receipt of tappet blanks and advising an official order will be placed. | ||
| View original record | 1360 Experimental Department Rm/Swdl.12/AP. 12th July 1937 Messrs C. & B.Smith Ltd., Stewart St, WOLVERHAMPTON. Dear Sirs, We thank you for the tappet blanks which we have received, also for… | ||
| scan0168 | The despatch of two Bentley inlet valves to A. Duckham Ltd. | ||
| View original record | To D/BP. from Rm/Swdl. 1360 Rm/Swdl.2/AP.5.8.37 Will you please pack and despatch to The Secretary A.Duckham Ltd., 16 Cannon St, London E.C.4., 2 inlet valves (Bentley) in glass inspection cases which… | ||
| scan0169 | Letter from Alexander Duckham & Co. Ltd. thanking for the return of two loaned Bentley Inlet Valves. | ||
| View original record | TELEPHONE NỌ CITY 1308. MHR/BH 1360? Sales Rm DUCKHAM HOUSE, 16, CANNON STREET, E.C.4. 9th August, 1937. Messrs. Rolls Royce Ltd., Derby. Dear Sirs, We have to thank you for returning the two Bentley… | ||
| scan0170 | Micro-examination report on two broken valve springs from chassis No. 3BT.179. | ||
| View original record | no dk 1360 Micro Examination Report M. 1,383 BY. from H1/EJW. c. to Cgh/EM. c. to Rm. ✓ H1/EJW.1/JN.11.8.37. Laboratory TWO BROKEN VALVE SPRINGS FROM CHASSIS No.3BT.179. (Your Ref. Cgh/EM.6/W.9.8.37.)… | ||
| scan0171 | Laboratory report cover featuring a photograph of two fractured metal rings. | ||
| View original record | ROLLS-ROYCE LABORATORY REPORT: H1/EJW.1/JN.11.8.37. M. 1,383 | ||
| scan0172 | Letter providing guidance on the process of Stelliting valves. | ||
| View original record | 1360 September 20th 1937 RM/Swdl.10/AP. Mr.P.Berthon, E.R.A.Ltd., Bourne, Dear Sir, Regarding the question of most efficient Stelliting, this to a large degree depends upon the skill of the operator.… | ||
| scan0173 | Instructions for applying Stellite to valve steel using an acetylene torch. | ||
| View original record | -2- A 3 - 5 lbs/sq.in. pressure of acetylene and 10 - 15 lbs/sq.in. pressure of oxygen is recommended. The purity of acetylene cannot be over emphasised, as impurities give rise to inclusions in the… | ||
| scan0174 | Page 3 of a letter detailing the Stelliting process for valves, including a sketch and cooling instructions. | ||
| View original record | -3- The sketch shows the sequence of the Stelliting with the revolutions - Some form of mechanism should be made to give the correct rotation and controllable by the operator. (8) The cooling off… | ||
| scan0175 | Letter to E.R.A. Ltd. concerning the examination of failed valves and the reasons for their failure. | ||
| View original record | September 21st.1937 Rm/Swdl.18/AP. 1860 Mr.P.Berthon, E.R.A.Ltd., BOURNE, LINCS. Dear Sir, We have examined the failed valves which you have sent for our inspection and are of the opinion that the… | ||
| scan0176 | Letter discussing defects discovered in engine valves after etching, related to the Stellite application process. | ||
| View original record | -3- (2) The second valve we have etched has a new appearance and we surmise that it has not been run in an engine, nevertheless, a crack is revealed in the Stellite. This is possibly due to the fact… | ||
| scan0177 | Requesting the dispatch of 5 valves back to Mr. P. Berthon of E.R.A. Ltd for inspection. | ||
| View original record | 1360 To D/BP. from Rm/Swdl. Rm/Swdl.2/MH.21.9.37. Will you please despatch back to Mr. P.Berthon, E.R.A.Ltd., Bourne, Lincs. the 5 valves which they submitted for our inspection. Rm/Swdl. | ||
| scan0178 | Letter from English Racing Automobiles regarding issues with stelliting valves and a request for inspection and further observations. | ||
| View original record | Handwritten: Good Files Handwritten: 1360 ENGLISH RACING AUTOMOBILES LTD BOURNE, LINCS. TELEPHONE BOURNE 121 DIRECTORS H.W. COOK, RAYMOND MAYS PETER BERTHON OUR REF PB/JB. DATE 21st September, 1937.… | ||
| scan0179 | Letter from English Racing Automobiles Ltd. regarding the failure of exhaust valves and requesting stelliting services. | ||
| View original record | ENGLISH RACING (ERA) AUTOMOBILES LTD BOURNE LINCS DIRECTORS H.W.COOK. RAYMOND MAYS PETER BERTHON TELEPHONE BOURNE 121 OUR REF. PB/JB. YOUR REF. RmSwd1.18/AP. DATE 23rd September, 1937. Handwritten… | ||
| scan0180 | Continuation letter from English Racing Automobiles Ltd. regarding the final machining of fabricated parts. | ||
| View original record | ENGLISH RACING AUTOMOBILES, LTD. CONTINUATION No. 1. Messrs. Rolls Royce, Ltd. 23rd September, 1937. and would also carry out the final machining operations. We should be extremely obliged if you… | ||
| scan0181 | Letter from English Racing Automobiles Ltd discussing valve stelliting troubles and requesting assistance. | ||
| View original record | Swdll Hildes 1360 E R A ENGLISH RACING AUTOMOBILES LTD BOURNE, LINCS TELEPHONE BOURNE 121 DIRECTORS H.W.COOK. RAYMOND MAYS PETER BERTHON OUR REF PB/JB. YOUR REF Rm4/Gry/R. DATE 23rd September, 1937.… | ||
| scan0182 | Letter declining a request for Stelliting valves and recommending Motor Components Ltd. of Birmingham for the work. | ||
| View original record | 1360 September 28th.1937 Rm/Swdl.9/AP. Mr.P.Berthron, E.R.A.Ltd., Bourne, LINCS Dear Sirs, We thank you for your letter of the 23rd. and are pleased to have been of some assistance regarding your… | ||
| scan0183 | Letter from English Racing Automobiles Ltd. thanking for correspondence and confirming they are contacting Motor Components, Ltd. as suggested. | ||
| View original record | 1360 E R A ENGLISH RACING AUTOMOBILES LTD BOURNE LINCS DIRECTORS H.W.COOK RAYMOND MAYS PETER BERTHON TELEPHONE BOURNE 121 OUR REF PB/JB. YOUR REF Rm/Swd1.9/AP. DATE 1st October, 1937. Messrs.… | ||
| scan0184 | Requesting the dispatch of 3 valves to F.R. Banks of Ethyl Export Corporation for trial. | ||
| View original record | 1360 To D/BP. from Rm/Swdl. Rm/Swdl.2/MH.13.10.37. Will you please despatch the 3 valves which we hand you herewith to - F.R.Banks, Esq., Ethyl Export Corporation, Thames House, Millbank, London,… | ||
| scan0185 | Letter detailing the trial results and condition of three exhaust valves submitted for testing. | ||
| View original record | 1360 RE/Swdl.1/MH. F.R. Banks, Esq., Messrs. Ethyl Export Corporation, Thames House, Millbank, London, S.W.1. 13th. October 1937. Dear Mr. Banks, We now have some results on the exhaust valves that… | ||
| scan0186 | Letter discussing cracked Sil.XCR valves and seeking feedback on the manufacturing issue. | ||
| View original record | -2- Rm/Swdl.1/MH. Unfortunately we did not crack test these Sil.XCR valves before they ran, but assume that these cracks were in at this time as four of the same batch which have not been run reveal… | ||
| scan0187 | Letter to The Midland Cylinder Co. requesting a quote for a trial batch of tappet casting blanks using a new material called Monichrome. | ||
| View original record | 13/60 Rm/Swdl.14/MH. 28th. October 1937. Mr. Toghill, The Midland Cylinder Co., Birmid Works, Smethwick. Dear Sir, Further to our conversation at the Show regarding your new camshaft material which… | ||
| scan0188 | Requesting a report on valves held open by the hydraulic mechanism in a cold chamber, questioning if the cause was Price's oil or sludge. | ||
| View original record | 1360 Rm/FD. from Rm. Rm6/R.28.10.37. The other day when we were starting a car in the cold chamber house, the valves were held open by the hydraulic mechanism. When the parts were dismantled and… | ||
| scan0189 | Serious situation and potential causes for the failure of hydraulic tappets. | ||
| View original record | 1360 By. from Rm. c. Hs. c. Sg. c. RHC. c. Mr. c. LA. HYDRAULIC TAPPETS. Rm5/R.29.10.37. In view of the serious situation with regard to hydraulic tappets revealed at the last Depot Conference, we… | ||
| scan0190 | Plunger clearance, oil leakage, and sludge issues in tappet and valve mechanisms. | ||
| View original record | -2- indicates that our plunger clearance is not entirely wrong. Furthermore, we have slightly increased the leakage factor since the tappets originally came on production. It is, however, quite… | ||
| scan0191 | List of experimental cars showing mileage covered during hydraulic tappet tests. | ||
| View original record | Rm. from Rm/FD. 29.10.37. We give below a list of experimental cars and show the mileage covered on hydraulic tappets, this includes tests carried out in France, Kenya, Cars on dyno, etc. During the… | ||
| scan0192 | Letter from a supplier advising against the use of their 'Monikrom' alloy for tappets due to unsuitability. | ||
| View original record | The MIDLAND MOTOR CYLINDER CO LTD. Telegrams RAFWORK. SMETHWICK Telephone 1151-2-3 SMETHWICK Our Ref:- TECH.DEPT. ECT/HA. Handwritten: Files 1360 MIDCYL (Logo) Birmid Works, Smethwick Near Birmingham… | ||
| scan0193 | The mileage completed by various units on a solid rocker mechanism. | ||
| View original record | 1360 File To Rm. 2.11.37. We give below the mileage completed to date on solid rocker mechanism. 32-EX No.13 unit in France 16,088 35-EX No.16 unit in England 4,472 37-EX No. 9 unit in England 2,941… | ||
| scan0194 | Procedure for deleting silent hydraulic tappets following a successful 15,000-mile test. | ||
| View original record | Sg. from Rm. c. Hs. c. Ey. c. REC. c. Hd. c. Mx. DELETION OF SILENT TAPPETS. Further to the discussion on the deletion of silent tappets in cases where a customer has had tappet trouble, we find that… | ||
| scan0195 | The trial results of non-stellited Thompson-Products exhaust valves and requesting further information. | ||
| View original record | To RHC. from Rm/Swdl. Y 1360 Rm/Swdl.2/AP.2.12.37. THOMPSON-PRODUCTS EXHAUST VALVES. Herewith information on the first batch of Sil XCR. (non stellited) exhaust valves which you received personally… | ||
| scan0196 | Series of questions regarding the sourcing, pricing, and advantages of American Silichrome valve materials. | ||
| View original record | -2- (2) Out of these combinations which has been found to give the best results in America.? (3) Assuming we find a satisfactory valve out of the samples sent, can this material be obtained in this… | ||
| scan0197 | Letter from Belgrave Engineering Co offering to manufacture Push Rods and enclosing a sample valve, referencing their previous work for Ford. | ||
| View original record | BELGRAVE ENGINEERING CO PROPRIETOR: HENRY PITTAWAY ENGINEERS STAMPERS FORGERS MACHINISTS BOLTS & NUTS COACH SCREWS ETC FROM ALL KINDS OF STEEL INCLUDING "STAINLESS" TELEPHONE: BLACKHEATH 1355 BELGRAVE… | ||
| scan0198 | Confirming a trial to incorporate valve spring dampers and delete bottom spring washers. | ||
| View original record | To By/ALD. from Rm/Swdl. * 1360 Rm/Swdl.1/MH.7.12.37. VALVE SPRINGS. This memo to confirm sanction given by By. to have valve spring dampers incorporated for trial with the scheme ECD.76 whereby the… | ||
| scan0199 | Letter to Belgrave Engineering Co. regarding a sample valve, its quality, and a request for quotation for production. | ||
| View original record | 1360 Rm/Swdl.7/MH. Mr. H. Pittaway, Belgrave Engineering Co., Blackheath, Nr. Birmingham. 15th. December 1937. Dear Sir, Your letter of the 3rd. together with sample valve and etching has been passed… | ||
| scan0200 | Addition of tappet retaining plates for Wraith III and Bentley 111 engines. | ||
| View original record | Copied 11/1 Filed Detailed DY/NS C. Rm. 1360. DA.8/G.16.12.37. Rm 485 Spring Plates WRAITH 111 and BENTLEY 111. TAPPET RETAINING PLATES. Please receive herewith . E.CD.293 Tappet Retaining Plates -… | ||
| scan0201 | Request to manufacture petrol drain valves for the Phantom III and 30 HP models. | ||
| View original record | To HPS. from Rm/GR. + 1360 Rm/GR.2/MH.31.12.37. PHANTOM III AND 30 H.P. PETROL DRAIN VALVES. Will you please have the following parts made to the drawings attached. Rm.477 12 off } Rm.478 12 off }… | ||
| scan0202 | Quotation for chassis valve forgings from Belgrave Eng. Co. and requesting a cost analysis. | ||
| View original record | 1360. also 1260 To G/Rb. from Rm/Swdl. Rm/Swdl.4/AP.10.1.38 CHASSIS VALVES Samples of valve forgings have been submitted to us by the Belgrave Eng. Co. of Birmingham. The forging is very close to… | ||
| scan0203 | Request for the production of two sets of valve springs, one normally produced and one shot blasted, for a special long distance test. | ||
| View original record | To Mr. Base from Rm/Swdl. c. By/EM. 1360 Rm/Swdl.5/MH.10.1.38. Will you please make us 12 valve springs to EB.3256 produced in the normal way and 12 to EB.3256 shot blasted, both sets of springs to be… | ||
| scan0204 | Analysis of a sample 'die cast' cast iron tappett from the Ford Motor Company, comparing its material composition and hardness to tappetts produced for the Wraith. | ||
| View original record | Mr. Jenner, c to Rm. c to RHC. A. Wiles SWDL 1360 RHC/Vs.1/JT.14.1.38. Re- Ford Tappett. The following information has been obtained from the sample "die cast" cast iron tappett produced by The Ford… | ||
| scan0205 | Letter to The Belgrave Engineering Co. regarding the production and costing of valves and push rods. | ||
| View original record | 1360 January 24th.1938 Rm/Swdl.4/AP. The Belgrave Engineering Co., Belgrave Works, Black Heath, Nr.BIRMINGHAM Dear Sirs, We have now completed our investigations regarding the cost figures of… | ||
| scan0206 | Letter to The Tempered Spring Co. requesting the supply of springs for an experimental trial. | ||
| View original record | 1305 1360 January 31st.1938 Rm/Swdl.2/AP. The Tempered Spring Co., Burton Wier Works, SHEFFIELD 4. Dear Sirs, Will you please supply us with 2 dozen springs to each of the attached drawings, EW.1428… | ||
| scan0207 | Testing, adoption, and trials of different valve springs for various car models. | ||
| View original record | To By. c. to Da. 1360 Rm/Swd1.16/JH.31.1.38. VALVE SPRINGS. Based on the successfull 15,000 miles tests on 6.B.IV and 3.B.IV with Swedish wire springs as bought from the Tempered Spring Co. a… | ||
| scan0208 | Comparative cost analysis for different types of springs. | ||
| View original record | -2- Rm/Swdl.16/JH.31.1.38. Comparative cost figures are :- (1) Std. S/CV spring EB.175............ £- 14s. 0d. (2) EB.3256 springs in Swedish wire produced by T.S. Co. ............ £- 6s. 6d. (3)… | ||
| scan0209 | Letter to The Tempered Spring Co. regarding the specifications and potential design improvements for two spring types. | ||
| View original record | 1360 Rm/Swdl.10/MH. Experimental Dept. 1st. February 1938. The Tempered Spring Co., Burton Weir Works, Sheffield, 4. Dear Sirs, In reply to your 'phone query regarding the 2 lots of springs ordered in… | ||
| scan0210 | Letter specifying diameter limits for valve spring washers and requesting urgent delivery of springs. | ||
| View original record | -2- 1.2.38. work strictly to the inside diameter limits in order to ensure the correct spigot location on the top and bottom valve spring washers. We are anxious to receive the springs as soon as… | ||
| scan0211 | Letter to The Tempered Spring Co. enquiring about the delivery of an order for valve springs. | ||
| View original record | 1360 Rm/Swdl.9/MH. Experimental Dept. The Tempered Spring Co., Burton Weir Works, SHEFFIELD, 4. 11th. February 1938. Dear Sirs, We are anxious to know when the valve springs ordered by us in… | ||
| scan0212 | Technical report providing an analysis and comparison of three American Silcrome valve steels. | ||
| View original record | See Peller 1360 Rm To Rm. from HPS. Please return to HPS.1/VS.12.2.38 VALVE STEELS. We give herewith certain information which has been passed on to us in regard to the latest American Silcrome valve… | ||
| scan0213 | Report comparing American valve steels like Silcrome, including prices, equivalents, and adoption by various car manufacturers. | ||
| View original record | - 2 - HPS.1/VS.12.2.38. We would rate these steels, from very thorough test work, in the following order: Silcrome XCR, Silcrome X-8, Silcrome XB. XCR and X-8 are about 26¢ per pound, base, and XB is… | ||
| scan0214 | The difficulties of stelliting Silcrome steel and issues with valve steel. | ||
| View original record | - 3 - HPS.1/VS.12.2.38. 6. STELLITING SILCROME. Silcrome does not stellite well, as it is a ferritic steel. It is subject to bad grain growth from the torch, and this cannot be corrected by subsequent… | ||
| scan0215 | Suggesting an increase in screw diameter from 5.BA to 3.BA for the rocker shaft location screw on Wraith, Bentley & 30 HP models. | ||
| View original record | BY/AM.15/G.23.2.38. H. (crossed out) o. to be/ae.S. (crossed out) c. to BY/GS. (crossed out) o. to BY/NS. (crossed out) c. Rm/Swdl. (crossed out) c. Rm/wld. (crossed out) Seder (handwritten signature)… | ||
| scan0216 | Locking the 5.BA. location screw in the rocker shaft for 25/30 and Bentley models. | ||
| View original record | RHC/TVF RHC/BM BX/CS. Rm/Swdl. RHC/DMT File BY/NS.12/G.25.2.38. 1360. 25/30 and BENTLEY. LOCKING OF 5.BA. LOCATION SCREW IN ROCKER SHAFT. EB.2637 PEDESTAL. G.56177 SCREW. KB.2951 WASHER. As there are… | ||
| scan0217 | Complaint about broken Chrome Vanadium valve springs and suggesting a trial of carbon valve springs with anti-surge coiling. | ||
| View original record | 1360 By. from Rm. c. Da. c. Rm/Swdl. Rm7/R.4.3.38. We note on Complaint No.W.130 with GUN37 has broken 4 valve springs in a mileage of 6,727. We observe these are Chrome Vanadium, and we should be… | ||
| scan0218 | Valve spring failure due to corrosion on Chassis GUN-37. | ||
| View original record | Rm. c. De. c. Rm/Swdl. 1360 BY/Mtn8/N.9.3.38. Re: Chassis GUN-37 - Valve Spring. Referring to Rm.7/R.4.3.38, according to the Laboratory report on the broken valve spring referred to in the Complaint… | ||
| scan0219 | Letter to a supplier regarding difficulty machining inlet valves and asking for heat treatment advice. | ||
| View original record | 1360 Rm/Swdl.7/MH. 16th. March 1938. The Belgrave Engineering Co., Belgrave Works, Black Heath, Nr. BIRMINGHAM. Dear Sirs, We have made a start on machining the six inlet valves EW.1429 which you sent… | ||
| scan0220 | Revised oil pipe design for the Wraith III and Bentley 111 relief valves to improve access. | ||
| View original record | 1360 DA.5/G.18.3.38. Handwritten notes: Top Left: BY/RS (crossed out) c. Rm. (crossed out) O. HPS/RH. (crossed out) Palee SNDL WRAITH 111 and BENTLEY 111. REVISED OIL PIPE TO RELIEF VALVES. Please… | ||
| scan0221 | Letter to The British Tyre & Rubber Co. requesting a supply of twelve 'Neuprene' bushes with specific dimensions and hardness. | ||
| View original record | 1228 1360 Experimental Dept. Rm/Swdl.4/MH. 6th. April 1938. The British Tyre & Rubber Co., Derby Road, Burton-on-Trent. Dear Sirs, Will you please supply us with twelve "Neuprene" bushes to the… | ||
| scan0222 | Request to manufacture six rocker cover thumb nuts from a cheaper material for testing and cost-saving purposes. | ||
| View original record | 1360. To HPS. from Rm/Swdl. Rm/Swdl.9/AP.6.4.38 Rocker Cover Thumb Nuts. Will you please make 6 rocker thumb nuts to E.60743, but in S/M which has a material cost of 2d. each against the normal BZ/S.… | ||
| scan0223 | Letter to The Tempered Spring Co. requesting a quotation for large quantities of valve springs for the 30 HP model. | ||
| View original record | 1360 April 9th.1938 Rm/Swdl.1/AP. The Tempered Spring Co., Burton Weir Works, SHEFFIELD 4. For the attention of Mr.Young. Dear Sir, Further to your recent visit and discussion on valve springs which… | ||
| scan0224 | Requesting an official order for a dozen 'Neoprene' bushes from the British Tyre and Rubber Co. | ||
| View original record | 1360. To Roy/Ms. from Rm/Swdl. c. R/JWH Rm/Swdl.9/AP.13.4.38 Will you please pass an official order for a dozen 'Neoprene' bushes which we have ordered from the British Tyre and Rubber Co. in… | ||
| scan0225 | Letter to The Tempered Spring Co. regarding the rejection of 1300 poorly finished valve springs. | ||
| View original record | 1360 Experimental Dept. Rm/Swdl.5/MH. 25th. April 1938. The Tempered Spring Co., Burton Weir Works, SHEFFIELD 4. For the attention of Mr.Young. Dear Sirs, We have received the 1300 valve springs to… | ||
| scan0226 | Letter to The Tempered Spring Co. regarding the poor finish on EB.3256 valve springs. | ||
| View original record | ALL COMMUNICATIONS SHOULD BE ADDRESSED TO THE COMPANY & NOT TO INDIVIDUALS. 1360? EXPERIMENTAL DEPT. Rm/Swdl.11/JH. 9th May, 1938. The Tempered Spring Co. Burton Weir Works, Sheffield.4. For the… | ||
| scan0227 | Page 2 of a typed letter discussing finishing and occasional failures. | ||
| View original record | -2- 9th May, 1938. We do not wish you to have the idea that we are finishing or asking for something that we do not do ourselves but simply that a good finish obviates occasional failures. Yours… | ||
| scan0228 | Issues and experimental solutions for flat bottom tappets on Wraith and Bentley engines. | ||
| View original record | To By. c. to Hs. c. to Da. c. to RHC. c. to W/JNR. c. to Da/Mc'. 1360 Rm/wdl.1/JH.10.5.38. FLAT BOTTOM TAPPETS AS APERTAINING TO WRAITH III, BENTLEY III & BENTLEY 50. Trouble was experienced with the… | ||
| scan0229 | Series of experiments modifying cam and tappet faces to ensure rotation and reduce wear. | ||
| View original record | -2- The resultant offset moment was not sufficient to ensure rotation with the full width cam (.650) there being a cam width of .425 tending to rotate from the CL of the tappet and an opposing width… | ||
| scan0230 | Experiment with a Bentley 'S' direct-acting exhaust valve system compared to a normal rocker ratio system. | ||
| View original record | -3- Rm/Swd1.1/JR.10.3.38. 28.3.IV. has been fitted with the conditions of the second experiment. For Bentley 'S' where the exhaust valve is working direct from the cam, the lift and corresponding… | ||
| scan0231 | Blueprint showing four different experimental cam designs for the Wraith model. | ||
| View original record | SCD660 EXPERIMENT Nº1 EXPERIMENT Nº2 EXPERIMENT Nº3 EXPERIMENT Nº4 EXPERIMENTAL CAMS WRAITH ROLLS-ROYCE, LTD. PRINT ROOM MAY 18 1938 DERBY. SCD660 Bakers 12 588 | ||
| scan0232 | The condition of various engine heads after testing, detailing warped and good condition units. | ||
| View original record | 1360 Rm/CTS.7/MH.26.5.38. Of available heads not fitted to engines following heads have warped. EW.1296 B.III No.1 Test bed engine (.250 section) 200 hrs. EB.2925 B.4 Test bed engine (.250 section)… | ||
| scan0233 | Deterioration of slow running in the Wraith model caused by incorrectly seating inlet valves. | ||
| View original record | 1360 also 654 By. from Rm. c. Hs. c. RHO. c. Mx. c. Da. Rm1/R.27.5.38. DETERIORATION OF WRAITH SLOW RUNNING AFTER ROAD USE. The attached report Rm/Swdl4/R.26.5.38. summarises the trouble caused by… | ||
| scan0234 | Investigation into the warping of valve seats on the Wraith III engine model. | ||
| View original record | Rm. from Rm/Swdl. Rm/Swdl.4/R.26.5.38. WRAITH III. WARPING OF VALVE SEATS. We have had several instances of valve seat warping in the proximity of the bridge between the exhaust valve and the inlet… | ||
| scan0235 | Engine valve seat warping, comparing different models and proposing solutions. | ||
| View original record | -2- Rm/Swdl.4/R.26.5.38. (2) That the 25/30 is comparatively free from seat warping, and the metal section between the valves is .437. A 25/30 head, as 'mocked up' on a Wraith unit and run in 27.G.VI… | ||
| scan0236 | Letter from Lindbloom Auto Parts Co. concerning air leakage past intake valvestem guides and its effect on engine performance. | ||
| View original record | Republic 5308 1360 Vol. 5 No. 8 KEEPING AEROPLANES FIT TO FLY Lindbloom Auto Parts Co. 6440 South Artesian Avenue CHICAGO, ILLINOIS JUNE 1 1938 Dr. R.W.H. Bailey Gentlemen: I am aware that engineers… | ||
| scan0237 | Promotional letter from Lindbloom Auto Parts Co. for their valve packing product. | ||
| View original record | Republic 5308 KEEPING AEROPLANES FIT TO FLY Lindbloom Auto Parts Co. 6440 South Artesian Avenue CHICAGO, ILLINOIS Dear Sir: WHAT IS THE MOST CONCERN TO YOU IN THE OPERATION OF AN AUTOMOBILE? Is it the… | ||
| scan0238 | Letter inquiring about the use of plain silichrome exhaust valves on stellited seats to prevent valve burning. | ||
| View original record | 1360. EXPERIMENTAL DEPT. Rm/Cwdl.15/JH. 3rd. June, 1938. The Associated Equipment Co.Ltd, Southall, MIDDLESEX. For the attention of Mr. Robinson. Dear Sirs, We understand from Mr. Robotham that during… | ||
| scan0239 | Information from AEC on valves, seats, and the use of Stellite. | ||
| View original record | R - Swoc - Noted Pm Herewith information from AEC on valves & seats. Such an arrangement could be tried on PAIII. Appears as though they would like to Stellite exhaust valves if they could apply it… | ||
| scan0240 | Letter from Associated Equipment Co Ltd discussing exhaust valve and seat materials, including stellite and silichrome. | ||
| View original record | THE ASSOCIATED EQUIPMENT Co LTD TELEPHONE: SOUTHALL 2424 (17 LINES). YOUR REF. [Handwritten: Files] [Logo: AEC SOUTHALL] TRADE MARK MIDDLESEX [Handwritten: 1360] TELEGRAMS: "VANGASTOW PHONE SOUTHALL."… | ||
| scan0241 | Letter from Associated Equipment Co. Ltd. discussing improvements in exhaust valve life using stellite seats and corrosion issues. | ||
| View original record | The Associated Equipment Co. Ltd. Continuation Sheet No. Messrs. Rolls Royce Ltd., Derby. road mileage of approximately 70,000 revealed excellent seating, but we are informed by our Service Dept. that… | ||
| scan0242 | Drawing of an inlet valve for a high power head. | ||
| View original record | B10430 THE ASSOCIATED EQUIPMENT Co. LTD. SOUTHALL, MIDDLESEX. A 10417 DRAWING NOT TO BE SCALED. ALL GOODS MUST BEAR OUR PART No., OUR DATE LETTER AND MAKER'S TRADE MARK. ALTERATIONS OLD PART N°… | ||
| scan0243 | Letter to the Associated Equipment Co. Ltd. discussing valve and seat materials. | ||
| View original record | 1360 Experimental Dept. Rm/Swdl.2/MH. 11th. June 1938. The Associated Equipment Co. Ltd., Southall, MIDDLESEX. For the attention of Mr.Robinson. Dear Sirs, We thank you for your letter of the 8th.… | ||
| scan0244 | Letter from the Experimental Department requesting samples of valve and bearing packings for trial. | ||
| View original record | 1360? EXPERIMENTAL DEPARTMENT. Rm/Swdl.7/JH. 15th June, 1938. Lindbloom Auto Parts Co., 6440 South Artesian Avenue, Chicago, Illinois. Dear Sirs, We are in receipt of your letter of the 1st. June, and… | ||
| scan0245 | Letter from The Associated Equipment Co Ltd regarding valve testing and requesting information on stellite for War Office engines. | ||
| View original record | Handwritten: Poilee Handwritten: 1360? THE ASSOCIATED EQUIPMENT Co LTD TELEPHONE: SOUTHALL 2424 (17 LINES). SOUTHALL MIDDLESEX TELEGRAMS: "VANGASTOW PHONE SOUTHALL." TRADE MARK YOUR REF. Rm/Swdl.2/MH.… | ||
| scan0246 | Cover letter to The Associated Equipment Co. enclosing a summary of the valve Stelliting process. | ||
| View original record | 136.0 Experimental Dept. 21st. June 1938. Rm/Swdl.8/MH. The Associated Equipment Co., Southall, MIDDLESEX. For the attention of Mr.Robinson. Rm/Swdl 10/AP 20/9/37 To Berthon Dear Sirs, In response to… | ||
| scan0247 | Letter from The Associated Equipment Co Ltd acknowledging receipt of information regarding the stelliting of valves. | ||
| View original record | 1360? THE ASSOCIATED EQUIPMENT Co LTD TELEPHONE: SOUTHALL 2424 (17 LINES). SOUTHALL MIDDLESEX TELEGRAMS: "VANGASTOW PHONE SOUTHALL." YOUR REF. Rm/Swdl.8/MH. OUR REF. CE/GDR/GD. 22nd June, 1938. For… | ||
| scan0248 | Request to order two dozen Neuprene bushes with specific dimensions and hardness from the British Tyre company. | ||
| View original record | 1360 To Roy. from Rm/Swdl. c. G/JWH. Rm/Swdl.6/MH.22.6.38. Will you please order two dozen "Neuprene" bushes to the following dimensions from the British Tyre, one dozen to have a Durometer hardness… | ||
| scan0249 | Letter from Lindbloom Auto Parts Co. regarding the application of packing on valve stems. | ||
| View original record | Republic 5308 KEEPING AEROPLANES FIT TO FLY Lindbloom Auto Parts Co. 6440 South Artesian Avenue CHICAGO, ILLINOIS June 29, 1938 Rolls Royce Derby England Experimental Dept. 1360? Pedes Scott… | ||
| scan0250 | Letter to The Belgrave Engineering Co. regarding endurance testing and a new order for trial engine valves. | ||
| View original record | 1360 EXPERIMENTAL DEPARTMENT. Rm/Swdl.16/JH. 29th June, 1938. The Belgrave Engineering Co., Belgrave Works, Black Heath, Nr. BIRMINGHAM. Dear Sirs, We have run an endurance test on the sample inlet… | ||
| scan0251 | Official order for forged engine valves from Belgrave Engineering Co. | ||
| View original record | To Roy. from Rm/Swdl. c.c. JWH. Rm/Swdl.16/MH.29.6.38. 1360 ? Will you please pass an official order in accordance with the letter we have written Rm/Swdl.16/JH.29.6.38 tothe Belgrave Engineering Co.… | ||
| scan0252 | Technical memo detailing modifications to increase push rod clearance in the cylinder head for the Wraith III and Bentley 111 models. | ||
| View original record | BX/RS. [Struck through] Ram. [Handwritten] 1360 [Handwritten] DA.4/G.2.7.38. c. Rm/Swdl. Sides [Handwritten] WRAITH 111 and BENTLEY 111 - PUSH ROD CLEARANCE IN CYLINDER HEAD. Please receive herewith… | ||
| scan0253 | The design and testing of modified tappets and push rods for the Wraith III and Bentley III models. | ||
| View original record | 1360. [DE/HD. - crossed out] [O.Rm. - crossed out] c. Rm/Swdl. DA.10/G.13.7.38. [Signatures] WRAITH 111 and BENTLEY 111. TAPPETS AND PUSH RODS. Please receive herewith blueprints of E.CD.795 Modified… | ||
| scan0254 | The failure of obsolete bottom tappets on a Wraith unit and proposed design modifications. | ||
| View original record | 1360. To By. from Rm/Swdl. c. Da/Jnr. c. By/McS. Rm/Swdl.4/MH.3.8.38. BOTTOM TAPPETS. During a recent endurance on a Wraith unit in respect of timing gear wear, two bottom tappets of obsolete type… | ||
| scan0255 | Blueprint drawing for a Tappet. | ||
| View original record | R.R. 772 (OH)(2448B - 15 - 10 - 36) N & G. Ltd EW. 1467 13338/E 19462/E 19524/E 18894/E .025 CHAMFER AT 45° BOTH ENDS 2.000 1.800 1.475 .175 SPH RAD 1.1865 DIA SIMILAR TO E.N 1413 EXCEPT FOR MAT'L… | ||
| scan0256 | Standardisation of tappets and push rods for the Wraith III and B.III chassis. | ||
| View original record | To BF & Rm.......From RHC. 1360 RHC.1/MC.9.8.38. CAMWHEEL TAPPETS & PUSH RODS - WRAITH III. & B. III. In reply to Ey.9/N.13. 7. 38., we have looked into the question of standardising the shortened… | ||
| scan0257 | Modification and strengthening of barrel type tappets for the Bentley III and Phantom III models. | ||
| View original record | 1360 DV/NS. c. Rm. c. Rm/Swdl. Lo Da.1/G.9.8.38. BENTLEY 111 and PHANTOM 111. BARREL TYPE TAPPETS. Herewith please receive E.CD.821 Modified Barrel Tappets - Bentley 111 and Phantom 111. In view of… | ||
| scan0258 | Requesting an examination of cracks found on trial exhaust valves with stellite faces. | ||
| View original record | 1360 To Hl. from Rm/Swdl. Rm/Swdl.2/MH.11.8.38. EXHAUST VALVES. Exhaust valves have been supplied for trial by Roy/Les. as acquired from Motor Components. These are in S/SLV with stellite face and… | ||
| scan0259 | Letter to The Tempered Spring Co. regarding under-specification valve springs. | ||
| View original record | 1360. Experimental Dept. Rm/CTS.3/MH. 31st. August 1938. The Tempered Spring Co., Burton Weir Works, SHEFFIELD. For the attention of Mr. Gerard Young. Dear Sirs, With reference to valve springs… | ||
| scan0260 | Letter from a spring supplier regarding a complaint about weak valve springs and discrepancies in load testing. | ||
| 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… | ||
| scan0261 | Modification for an oil seal on the valve spring top washer for Wraith III and Bentley III engines. | ||
| View original record | BY/NS c. Rm. c. Mx. c. Rm/Swdl Pelec DA.10/G.9.9.38. SWDL 1360 WRAITH III and BENTLEY III. OIL SEAL FOR VALVE SPRING TOP WASHER. Please receive herewith :- E.CD.846 Modified Valve Spring Washer with… | ||
| scan0262 | Successful trial of valve oil seal washers and a proposal for wider application and further investigation. | ||
| View original record | 1360 also 654 To By. from Rm/Swdl. c. HPS. c. Mx. c. Da/MGS. Rm/Swdl.6/MH.22.9.38. VALVE OIL SEAL. We have recently had a clear cut proof of the value of oil sealing the top valve spring washers in… | ||
| scan0263 | Confirming a material analysis of two .4 carbon push rods due to variations in Brinell hardness. | ||
| View original record | 1360 To H1/Mr.Squires. Rm/Swdl.5/MH.22.9.38. This memo to confirm that you will make a material analysis of the two .4 carbon push rods which we have handed you. The reason this is required is that… | ||
| scan0264 | Letter from Joseph O. Eaton of Eaton Manufacturing Company regarding a meeting to discuss Hydraulic Lifters. | ||
| View original record | 1360 23rd November, 1938. W. A. Robotham, Esq. Rolls Royce, Ltd., Derby. Dear Mr. Robotham, I am writing this letter to inform you that I have recently come to England to represent the Eaton… | ||
| scan0265 | Letter to J.O. Eaton arranging a meeting for the 28th of November. | ||
| View original record | 1360 Rm5/R. 24th November, 1938. J.O. Eaton, Esq., 14, Stanford Court, Cornwall Gardens, S.W.7. Dear Mr. Eaton, Thank you for your letter of the 23rd November. I shall be pleased to see you on Monday… | ||
| scan0266 | Pattern modification to the 8-cylinder exhaust valve guide. | ||
| View original record | 1360 also 1207. 1202 also 1360 HPS. from Rm. c. RHC/Vs. Rm8/R.25.11.38. There is a pattern modification to the Exhaust Valve Guide which we should like incorporating on the 8-cylinder pattern when you… | ||
| scan0267 | Telegram from Eaton to Mr. Robotham arranging a meeting to discuss Lister prices. | ||
| View original record | POST OFFICE TELEGRAM OFFICE STAMP: DERBY 30 NOV 38 To: MR ROBOTHOM ROYCAR DERBY Message: SHOULD LIKE TO SEE YOU ON LISTER PRICES FRIDAY AT 11 IF AGREEABLE = EATON Correction strip: PRICES TT + PRICES… | ||
| scan0268 | Telegram received by telephone arranging a meeting to discuss Lister prices. | ||
| View original record | ROLLS-ROYCE LTD. 1360 M.D. RWW 30 NOV RECEIVED TELEGRAM RECEIVED BY TELEPHONE. Time Received: 11-15 (10-50 is crossed out) Date: 30-11-38 To: Mr. Robotham Roycar DB from london 10-51 18wds Message:… | ||
| scan0269 | Telegram received by telephone requesting a meeting to discuss lister prices. | ||
| View original record | ROLLS-ROYCE LTD. 1360 TELEGRAM RECEIVED BY TELEPHONE. Mr. Robotham Time Received 11-15 Date 30-11-38. To Roycar. DB. from london 10-51. 18Wds [STAMP: RECEIVED] [STAMP: 30 NOV] Should like to see you… | ||
| scan0270 | Short, typed and handwritten memo confirming a meeting. | ||
| View original record | -1360 30.11.38. EATON Western 8433 London. CONVENIENT TO SEE YOU ELEVEN FRIDAY. W.A.Robotham | ||
| scan0271 | Urgent memo regarding the failure of B.60 bottom tappets during an endurance run and the need for a modified design. | ||
| View original record | 1360 & 1044 To HPS. from Rm/Swdl. c. Hy. c. RHC/VS. (Iron Foundry) c. Da/Jnr. c. Da/Res. c. B/SS. Rm/Swdl.1/MH.1.12.38. URGENT. B.60 BOTTOM TAPPETS. After a short endurance run of several hours, two… | ||
| scan0272 | Methods to reduce engine detonation and material considerations for exhaust valves. | ||
| View original record | 1360 Rm/Swdl. from Rm. Rm5/R.7.12.38. EXHAUST VALVES. In view of the incipient detonation which still appears to exist on this cylinder head, we should like to urge the single cylinder parts, as with… | ||
| scan0273 | Valve gear failure on the B.60 unit and proposing design changes for various engines. | ||
| View original record | 1360 also 104H To Da. from Rm/Swdl. c. Da/Jnr. c. Da/MOS. c. By/CS. c. HFS. VALVE GEAR. During the endurance on the B.60 unit an inlet valve went into the cylinder and through the pistons. The trend… | ||
| scan0274 | Preferred method for an oil seal on a valve spring top washer for the Wraith III. | ||
| View original record | BY/NS c. Rm c. Mx c. Rm/Swdl. boo 1360/65H DA.4/G.8.12.38. WRAITH 111 - OIL SEAL FOR VALVE SPRING TOP WASHER. E.CD.1014. Further to our memo DA.24/G.10.11.38. we have now discussed with Messrs.… | ||
| scan0275 | The unauthorized order of 48 sample valves from Daniel Doncaster Co, Ltd. | ||
| View original record | 1360 Roy. o-By. c Rm. o-Hs. Roy/Les 3/ER 13.12.38 Sample Valves received from Daniel Doncaster Co, Ltd., We are very surprised to find that 48 Valves have been ordered and received from Messrs. Daniel… | ||
| scan0276 | Specification sheet for an overhead valve engine detailing valve gear weights, spring loads, timing, and accelerations. | ||
| View original record | 1360. OVERHEAD VALVE ENGINE. VALVE GEAR WEIGHTS. (A) Valve ....................... .1986 lbs. (B) Spring ...................... .1304 (C) Retaining Washer and Wedges .0656 (D) Rocker… | ||
| scan0277 | Specifications for a Side Valve Engine including valve gear weights, loads, timing, and performance data. | ||
| View original record | SIDE VALVE ENGINE. VALVE GEAR WEIGHTS. Lbs. (A) Valve ................. .2277 (B) Spring .................. .1304 (C) Retaining Washer & Wedges .0656 x (D) Tappet .................. .2321 (E)… | ||
| scan0278 | Diagram of an engine oil system with specified pressures. | ||
| View original record | L.P. OIL TO TIMING GEARS AND HYD. TAPPETS. MAIN H.P. OIL GALLERY. H.P. RELIEF VALVES. OVERFLOW TO SUMP. 5/8" DRILLING RIGHT THROUGH ENGINE TO FEED TAPPETS. H.P. H.P. OIL PUMP. SUCTION. DIAGRAM OF OIL… | ||
| scan0279 | Letter from The Studebaker Corporation discussing engine valve cooling, temperatures, and running-on issues. | ||
| View original record | Original in Rms American file. COPY. 1360 SWDC THE STUDEBAKER CORPORATION, South Bend, Indiana. 14th. December 1938. Mr. W.A.Robotham, Rolls-Royce Limited Derby, England. Dear Robotham: Although we do… | ||
| scan0280 | Research engineer's report on engine after-firing, crankshaft vibration damper, and overdrive gearbox issues. | ||
| View original record | W.A.Robotham. -2- 14.12.38. trouble of this sort occurred shortly after the adoption of the downdraft manifold and there had been no other change in the engine which would account for this trouble.… | ||
| scan0281 | Letter to Mr. Robotham chasing up delayed information for the Engineering Department in Detroit. | ||
| View original record | 1360 15th December, 1938 W. A. Robotham Esq., Messrs. Rolls-Royce Ltd., D e r b y. Dear Mr. Robotham, As yet I have not received the information which you were going to send me last week, and am… | ||
| scan0282 | Letter from Olds Motor Works to Mr. W.A. Robotham regarding their opinions on engine valves. | ||
| View original record | Original in 1360 Rm's American file Files SWDL COPY. OLDS MOTOR WORKS DIVISION GENERAL MOTORS CORPORATION, LANSING, MICHIGAN. December 16th. 1938. Mr. W.A.Robotham, Rolls-Royce Ltd., Derby, England.… | ||
| scan0283 | Letter to J.O. Eaton regarding particulars for hydraulic tappets. | ||
| View original record | 1360 Rm7/R. 16th December, 1938. J.O. Eaton, Esq., 14, Stanford Court, Cornwall Gardens, S.W.7. Dear Mr. Eaton, Herewith the necessary particulars relating to the valve gears for which we require… | ||
| scan0284 | Letter from Chrysler Corporation to W. A. Robotham regarding exhaust valve temperatures and engine performance. | ||
| View original record | 1360 CHRYSLER MOTORS STANDARDIZED QUALITY CHRYSLER CORPORATION Detroit, Michigan, U.S.A December Nineteenth 1938 Mr. W. A. Robotham Rolls-Royce Ltd. Derby, England Dear Mr. Robotham: I wish to thank… | ||
| scan0285 | Letter from Chrysler Corporation to Mr. W. A. Robotham concerning valve temperature and tappet adjusters. | ||
| View original record | CHRYSLER CORPORATION Detroit, Michigan, U.S.A - 2 - Mr. W. A. Robotham December 19, 1938 affect on valve temperature. As a matter of fact, an expanding section from the valve to the manifold will… | ||
| scan0286 | Points from a paper by Banks regarding trials on car engine components. | ||
| View original record | 1360 Rm/Swdl. from Rm. Rm6/R.20.12.38. There were several points in Banks' paper we should try out on car engines. (1) He states that Brightray is cheaper than Stellite and softer, thereby not being… | ||
| scan0287 | Letter from Ethyl Export Corporation requesting data on valve closing velocities and car test results. | ||
| View original record | 1360 CABLEGRAMS: ETHYLPORT, LONDON. TELEGRAMS: ETHYLPORT, SOWEST. ETHYL EXPORT CORPORATION Incorporated in the State of Delaware, U. S. A. with limited liability. THAMES HOUSE, MILLBANK LONDON, S.W.1… | ||
| scan0288 | Letter discussing oil pressure for tappets, sodium-cooled valves, and valve positions. | ||
| View original record | 1360 FILE JNR. Please note & return Rm Noted JNR 20th December, 1938. W.A. Robotham, Esq., Rolls-Royce, Ltd., Derby. Dear Mr. Robotham, Thank you for your letter of the 16th and the enclosed data. I… | ||
| scan0289 | The second page of a typed letter concluding with a signature from Joseph O. Eaton, Jnr. | ||
| View original record | -2- positions and apparently cool satisfactorily. I shall get in touch with you again when I have received recommendations from our Engineering Department. Very truly yours, [Signature] JOSEPH O.… | ||
| scan0290 | Letter from Joseph O. Eaton, Jnr. to W. A. Robothom confirming a meeting. | ||
| View original record | 1360 26th November, 1938. W. A. Robothom, Esq. Rolls Royce, Ltd, Derby. Reference Rm5/R. Dear Mr. Robothom, Thank you for your letter of the 24th. I am looking forward to seeing you on Monday and… | ||
| scan0291 | Technical drawing of an exhaust valve seat. | ||
| 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. MACHINE OVERSIZE 1 M/M.… | ||
| scan0292 | Technical drawing for an inlet and exhaust valve. | ||
| View original record | VE769S U86050 DRAWING NOT TO BE SCALED. ALL GOODS MUST BEAR OUR PART No. OUR DATE LETTER AND MAKER'S TRADE MARK. ALTERATIONS 1) I-1621 25-9-31 2) I-1796 6-2-32 3) I-1853 4-5-32 4) I-1999 29-7-32 5)… | ||
| scan0293 | Requesting an official drawing for a modified inlet valve for the Wraith or Bentley V. | ||
| View original record | 1360 To By. from Rm/Swdl. c. By/CS. Rm/Swdl.5/MH.29.12.38. INLET VALVES. Will you please instruct that an official EW. drawing be made of the inlet valve for Wraith or Bentley V similar to the… | ||