Rolls-Royce Archives
| Identifier | Entry | ||
| 02-page001 | Letter regarding a customer's query about the discontinuation of the free-wheel arrangement for the gearbox. | ||
| View original record | R.R. Form 136 (N S) 1M. 12.11 R.P. 906. C O P Y X 523 CJ19/018312 18th March . 1912 My dear F.H.R. On Friday Mr. Ernest Claremont again raised the question of why we do not fit to our gear box the… | ||
| 02-page002 | Letter from E. A. Claremont to C. Johnson regarding a 4-cylinder car with a free-wheel gear arrangement. | ||
| View original record | R.R. 295A (A4) (Cr. 71/2) 1M.1.12 K.F. & M. C O P Y _____ X 523 22nd March, 1912. C. Johnson Esq., Dear Mr. Johnson Re Change Gear. It has just occurred to me that my 4 cylinder car which is fitted… | ||
| 02-page003 | Letter to Mr. Claremont regarding an offer to test a special change-speed arrangement on his car. | ||
| View original record | CJ19/C25312. Z 523 14, Conduit Street, London, W., March 25th, 1912. Dear Mr. Claremont, Many thanks for your letter about changing gear. I had already written to Mr. Royce on the matter, and I have… | ||
| 02-page004 | Departmental memo regarding a free-wheel system of changing gear and the proposal for the Technical Committee to report on it. | ||
| View original record | ROLLS-ROYCE LIMITED, 14-15, CONDUIT STREET, LONDON, W. TELEGRAMS. "ROLHEAD," LONDON. TELEPHONES. 1654, 1655, 1656 GERRARD. DEPARTMENTAL MEMO. This column is for Name of Person addressed. DATE.… | ||
| 02-page005 | Instruction to the Gear Box Department to devise a scheme for fitting an experimental freewheel device. | ||
| View original record | Gear Box Dept. I.O. TEB4/L18412. 18.4.12. Please get out a scheme for fitting to our standard gear box experimentally, a free wheel device similar to that fitted to Mr Claremont's 4-cylinder R.R. Two… | ||
| 02-page006 | Extract from a note by Mr. Royce regarding the abandonment of the free-wheel gearbox experiment. | ||
| View original record | Extract from Mr Royce's Note dated 23rd. April.1912. I think the free wheel gear box experiment should be abandoned, and I think it was premature and unwise for the Committee to put in hand two sets… | ||
| 02-page007 | Departmental memo regarding a report on the committee's recommendation to design and test a free-wheel gearbox. | ||
| View original record | ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 813 (TWO LINES.) DEPARTMENTAL MEMO. 523 This column is for Name of Person addressed. DATE. Re Free Wheel for Gear… | ||
| 02-page008 | Departmental memo discussing the consideration of a scheme based on Mr. Claremont's experience. | ||
| View original record | R.R. 125 1m 5-11(TA) - 15A.10 E.P. 16/A. ROLLS-ROYCE LIMITED, NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONES: 813 (TWO LINES). DEPARTMENTAL MEMO. This column is for Name of Person… | ||
| 02-page009 | Departmental memo instructing to halt proceedings on the 'Free Wheel for Gear Box' based on a previous memo from Mr. Royce. | ||
| View original record | AUTOMOBILES ROLLS-ROYCE (FRANCE) LIMITED 83, BOULEVARD GOUVION-SAINT-CYR PARIS TELEGRAMS: ROLLSROYCE-PARIS SHOWROOM: 102, Avenue des Champs-Elysees Telephone 587-04 OFFICES, GARAGE, STORES and… | ||
| 02-page010 | Departmental memo concerning Mr Royce's opinion on Mr Claremont's free wheel gearbox. | ||
| View original record | ROLLS-ROYCE LIMITED. NIGHTINGALE ROAD, DERBY. TELEGRAMS: "ROYCAR," DERBY. TELEPHONE: 813 (Two Lines). DEPARTMENTAL MEMO. 523 This column is for Name of Person addressed. Date. Mr Johnson 15.5.12.… | ||
| 02-page011 | Seeking confirmation of a letter sent to Mr. Claremont regarding a free-wheel gearbox, with a handwritten reply. | ||
| View original record | R.R. 29B - 500 - 8/11. P.B. & S. LTD. 6059. [Stamped: M.D. 30 MAY] [Stamped: 30 MAY 1912] 29th May 1912. [Handwritten Note]: File Free wheel gear box Z523 Could you kindly let me know whether you have… | ||
| 02-page012 | Letter conveying Mr Royce's opinion to abandon the free-wheel gearbox experiment due to unexplained breakages. | ||
| View original record | Rolls-Royce Limited. Derby, 30th May 1912. AD9/MSO512. E.A.Claremont, Esq., Trafford Park, Manchester. Z 523 Dear Sir, Re Free Wheel Gear Box. In accordance with Mr Johnson's instructions I beg to… | ||
| 02-page013 | The testing and operation of the Humphrey Sandburg clutch fitted to a Lea-Francis car. | ||
| View original record | S/W. Hs. Copy to:- PM. HUMPHREY SANDBURG CLUTCH. I was given the opportunity this morning to test the working of the above clutch fitted to a Lea, Francis car and found its action most interesting.… | ||
| 02-page014 | Humphrey Sandburg clutch, its function as a free-wheel device, and the reasons for its non-adoption. | ||
| View original record | To CWB. from Hs. c. to FN. RE. HUMPHREY SANDBURG CLUTCH. With reference to CWB7/GM5.1.27. In effect, this clutch is a free-wheel device. The effect of a free-wheel, on changing gear, is well known to… | ||
| 02-page015 | Letter from Colonel The Master of Sempill to Mr. Hives regarding drawings for a Free Wheel and Gear Box. | ||
| View original record | From Colonel The Master of Sempill My Reference__________ Your Reference__________ SARDINIA HOUSE. (605-Fifth Floor) . KINGSWAY . LONDON. W.C.2 Telephone:- HOLBORN 0991 Telegrams:- "SEMPILAERO" LONDON… | ||
| 02-page016 | Letter from Colonel The Master of Sempill to W. Hives regarding a design for a 20 HP car. | ||
| View original record | X523 From Colonel The Master of Sempill My Reference_______ Your Reference_______ SARDINIA HOUSE. (5&S-Fifth Floor) KINGSWAY LONDON. W.C. 2 Telephone:- HOLBORN 0991 Telegrams:- "SEMPILAERO" LONDON… | ||
| 02-page017 | Letter enclosing particulars of the 20 HP car for the design of applying the Humphery Sandburg Freewheel to a U.1B chassis. | ||
| View original record | Expl: Dept: Y573 HsS/LG. 7th. Oct. 1927. Y577b W. Sempill Esq., Sardina House, Kingsway, London W.C.2. Dear Sir, We enclose herewith particulars of the 20 HP. car which we think are sufficient to… | ||
| 02-page018 | Letter from Colonel The Master of Sempill regarding the design for fitting a Humfrey-Sandberg Free-wheel to a 20 HP car. | ||
| View original record | From Colonel The Master of Sempill My Reference ________ Your Reference ________ SARDINIA HOUSE. (505-Fifth Floor) KINGSWAY . LONDON. W.C.2 Telephone: V523 HOLBORN 0991 Telegrams: "SEMPILAERO" LONDON… | ||
| 02-page019 | Solutions for rapid acceleration and engine improvements regarding the number of cylinders. | ||
| View original record | To BJ. from R. c. to BY. Hs. X523 R3/M31.10.27. CHASSIS PROBLEMS. X.523 X.3420 ACCELERATION FOR PASSING. X.1725 X.8050 There is an increasing demand for more rapid acceleration, but which cannot be… | ||
| 02-page020 | Request to borrow a small model of the Humfrey-Sandberg clutch and its technical analysis. | ||
| View original record | Y523 Expl: Dept: 1st. Nov. 1927. Hs7/LG. W. Sempill Esq., Sardinia house, Kingsway, London W.C.2. Dear Sir, I should be very grateful if you could loan to us for a week or so a small model of the… | ||
| 02-page021 | Letter from Humfrey-Sandberg Company Ltd. regarding reports, a pamphlet, and a model of their clutch. | ||
| View original record | Telephone: Sloane 6217, 6218, 6219. Home Telegraphic Address: "SANDBERG, SOWEST, LONDON" Telegrams (from abroad): "SANDBERG, LONDON" X-523 HUMFREY-SANDBERG COMPANY LIMITED. DIRECTORS: C. PETER… | ||
| 02-page022 | Letter from Colonel The Master of Sempill regarding the loan of a Humfrey-Sandberg Free-wheel Clutch model for testing. | ||
| View original record | X523 From Colonel The Master of Sempill SARDINIA HOUSE. (50 - Fifth Floor). KINGSWAY LONDON. W.C.2 Telephone: HOLBORN 0991 Telegrams: "SEMPILAERO" LONDON Date: 3rd.November 1927 My Reference _________… | ||
| 02-page023 | Testing of a free wheel clutch on a 12 HP Austin and its potential application on a 20 HP gearbox. | ||
| View original record | √523 To R. from Hs. c.c. to BJ. Nor. c. to E. H. Hs2/L04.11.27. Particulars in original file FREE WHEELS ON TRANSMISSION. We recently tested a 12 HP. Austin fitted with a free wheel at the rear of the… | ||
| 02-page024 | Despatch of a small freewheel to R. at West Wittering for examination. | ||
| View original record | To BP. from Hs. c. to Mt. Stores. X523 Hs1/LM.11.27. We are sending into the Stores for despatch to R. at West Wittering :- 1 small freewheel. This is being sent to R. for his examination. Please… | ||
| 02-page025 | Letter from Humfrey-Sandberg Company to Mr. Hives regarding an experimental freewheel programme. | ||
| View original record | Telephone: Victoria 6217, 6218, 6219. Inland Telegraphic Address: "SANDBERG, SOWEST, LONDON" Telegrams from abroad: "SANDBERG LONDON" HUMFREY-SANDBERG COMPANY LIMITED. DIRECTORS: C. PETER SANDBERG,… | ||
| 02-page026 | Pros and cons of using freewheels on cars. | ||
| View original record | X.523 BJ. From R. c. to Wor. Hs. BY. c. to CMB. DA. SQ. c. to PN. C. 32/H.12.27. FREEWHEELS ON CARS. These seem to be attracting considerable attention. Personally, I think they are a mistake. They… | ||
| 02-page027 | Practice of using gears instead of front-wheel brakes for descending hills. | ||
| View original record | s/w x523 [REDACTED] Copy to [REDACTED] PHA/H.7.12.37. FRANKENSTEIN ON CARS. I note in your H2/M1.1.27 you suggest that with our cars, owing to the effectiveness of front wheel brakes, no one thinks of… | ||
| 02-page028 | Communicating the decision against fitting free wheels on cars, following a Sales Conference discussion. | ||
| View original record | E....from C. c. to Hs. c. to By. HS X523 010/017.12.27 With reference to R's note H2/M1.12.27, this matter has been discussed and considered by the Sales Conference and we agree with R. that free… | ||
| 02-page029 | Letter from Humfrey-Sandberg Company Ltd. discussing the design for a 20 HP car and the return of a model clutch. | ||
| View original record | Telephone. VICTORIA 0877 (2 lines) Home Telegraphic Address. "SANDBERGO, SOWEST, LONDON" Telegrams from abroad. "SANDBERGO, LONDON" HUMFREY-SANDBERG COMPANY LIMITED. DIRECTORS: C. PETER SANDBERG,… | ||
| 02-page030 | Letter from Humfrey-Sandberg Company Ltd. regarding a model clutch and pioneering licenses. | ||
| View original record | HUMFREY-SANDBERG COMPANY LIMITED. Telephone: SLOANE 0817, 0818, 0819 Home Telegraphic Address: "SANDBERG, SOWEST, LONDON" Telegrams from abroad: "SANDBERG, LONDON" V523 DIRECTORS: C. PETER SANDBERG,… | ||
| 02-page031 | Letter regarding Packard's interest in a new design and production terms. | ||
| View original record | -2- You will be interested to know that Packards are extremely interested and have asked us to get out a design, and also indicate definite terms to cover their production. With all good wishes, Yours… | ||
| 02-page032 | Letter regarding a decision not to pursue the application of a free wheel clutch to their cars. | ||
| View original record | Expt: Dept: HS2/LG. Jan. 6th. 1928. Col. The Master of Sempill, Humfrey-Sandberg Co. Ltd., 40, Grosvenor Gardens, London S.W.1. My dear Sempill, Thank you for your letter of the 3rd.inst. I am… | ||
| 02-page033 | Instructing the despatch of a small model clutch, previously sent for examination, to Col. The Master of Sempill. | ||
| View original record | X523 To BP. from Ha. c. to Mt. Stores. Hs3/LG6.1.28. We are sending into the Stores :- 1 small model clutch. Will you please have this clutch despatched to :- Col. The Master of Sempill,… | ||
| 02-page034 | Letter from Humfrey-Sandberg Company Ltd. discussing the trial of a 'free wheel' unit on a car. | ||
| View original record | Telephone SLOANE 6217, 6218, 6219 Some Telegraphic Addresses: "SANDBERG, KINNERY, LONDON". X523 Telegrams from abroad: "SANDBERG, LONDON" HUMFREY-SANDBERG COMPANY LIMITED. DIRECTORS: C. PETER… | ||
| 02-page035 | Letter discussing a potential gearbox design with two clutches and the benefits of a free-wheel vehicle. | ||
| View original record | E. W. Hives Esq., Messrs. Rolls-Royce Ltd. 9/1/28. - 2 - tried the same out in your experimental department. Before going ahead with a design it may be well for you to consider as to whether in a… | ||
| 02-page036 | Potential application of the Humphrey Sandberg freewheel for single-cylinder test beds and supercharger drives. | ||
| View original record | To R. from Lr. C. to H.J. Hor. C. to R.H. K. C. to BY. EP. RE. HUMPHREY SANDBERG FREEWHEEL. Farnborough have been thinking around the application of the Humphrey Sandberg freewheel for application to:… | ||
| 02-page037 | Outlining four potential solutions to the problem of increased vehicle acceleration. | ||
| View original record | Re: from R. √523 R2/106.10.28. IMPROVED ACCELERATION. X.1725 X.4550 X.4474 X.523 We are considering 4 ways of meeting the increased acceleration problem with cars, such as :- For ease of { 1. Delavaud… | ||
| 02-page038 | Letter to A.W. Claremont discussing the need for increased acceleration and proposing a test of a freewheel on the gearbox side shaft. | ||
| View original record | X523 c. to BJ. LHS. c. to PH. CWB. c. to BY. Hs. c. to C. SG. Elmstead, West Wittering, Chichester. 24th.Oct. 1928. A.W.Claremont Esq., X.523 X.7310 X.281 X.5310 My dear Mr. Claremont, It is realised… | ||
| 02-page039 | Alternative gearbox design using an epicyclic unit to provide an easily obtainable 3rd speed. | ||
| View original record | contd :- -2- but not in the side shaft of the gearbox. This we consider the most practical and quickly available way of providing an easily obtainable 3rd. speed. Our gearbox being especially silent… | ||
| 02-page040 | By F.H. Royce discussing novel epicyclic gearbox arrangements and patentable ideas. | ||
| View original record | contd :- -3- We have been over this ground so many times that none of it seems new to us, but I think the combination of the parts now suggested is novel and gives some advantages not hitherto… | ||
| 02-page041 | Conclusions from testing a De Lavaud scheme freewheel back axle on a Talbot car. | ||
| View original record | Hs. from R. c. to BJ. Nor. c. to FH. HY. c. to ENG. SS. X523 R1/JAB.11.28. FREEWHEEL FOR CARS. X.523 X.4474 CWB. very kindly brought a Talbot's car with De Lavaud scheme of freewheel back axle, to WR.… | ||
| 02-page042 | Arranging the trial of a freewheel cancelling clutch and an epicyclic third gear. | ||
| View original record | Hs. from R. c. to BJ. DA. c. to SG. X523 RL/M20.11.28. EASY THIRD GEAR, AND GEAR CHANGING. X.5310 X.523 X.5300 X.7640 I have arranged with DA. that we will try the freewheel with the cancelling clutch… | ||
| 02-page043 | Requesting the return of papers regarding a gear-changing device called a Synchronostat. | ||
| View original record | S/W. To Hs. from P. c. to Mr. X523 P.3/AV/D20.2.29. SYNCHRONOSTAT With reference to the papers I left with you 31/1/29 regarding a device for simplifying gear changing, particulars of which were sent… | ||
| 02-page044 | Advantages of a Synchrostat coupling over a freewheel device and requesting to test a car fitted with it. | ||
| View original record | To Fl. from He. C.C. to W.E.T. X523 HS3/LC4.3.29. SYNCHROSTAT. We are returning herewith the papers in connection with the Synchrostat coupling. We think this scheme may have advantages over the usual… | ||
| 02-page045 | From 'R' discussing various gearbox designs and potential improvements for SS and 20 HP models. | ||
| View original record | SG. from R. 4523 R3/M5.3.29. c. to Mr. Fuller. c. to Mr. Beaver. c. to Mr. Olley. c. to Wor. DA. c. to Hs. BY. SS. AND 20 HP. GEARBOXES. X.7310 X.5310 X.2061 X.523 We have a very good indeed gearbox… | ||
| 02-page046 | American schemes and the performance of an 'SS' vehicle after completing 14,000 miles. | ||
| View original record | contd :- -2- In the meantime I shall be pleased to see if there is anything new to me in the 2 American schemes mentioned by OY. Perhaps he will send drgs. to DA. and DA/Hdy. will make copies and… | ||
| 02-page047 | Scheme for a freewheel in the sideshaft of the 20 HP gearbox. | ||
| View original record | BY. HS. from DA. c. to SG. X523 DA5/M20.3.29. 20 HP. GEARBOX. FREEWHEEL IN SIDESHAFT. X.5310 X.523 With reference to R4/M7.3.29., we are sending herewith M.Schs. 2767/2772/2773, shewing the scheme for… | ||
| 02-page048 | And comparing different types of change-speed gearboxes. | ||
| View original record | X523 To R. from DA. c. to Sg. Hs. BY. DA1/M25.3.29. CHANGE SPEED GEARBOXES. X.5310 X.523 X.7310. X.2061 Mr. Hardy and I have gone through the gearbox situation, and report as follows: Two objects are… | ||
| 02-page049 | Analysis of different gear changing schemes including Freewheel, Salerni coupling, and Synchro-mesh systems. | ||
| View original record | -2- Of those in Class C. only (12) is being used. Some of the others appear to present possibilities of an original arrangement being arrived at. We attach literature concerning: Salerni coupling,… | ||
| 02-page050 | Gearbox designs, specifically detailing the advantages and disadvantages of internal mesh with dog clutches. | ||
| View original record | contd :- -3- their operation required. Failure of the synchronising mechanism interferes very little with the operation of the car. Increase of cost and weight is small. DISADVANTAGES. Some doubt as… | ||
| 02-page051 | Gearbox difficulties and proposals, including an epicyclic gear with brake. | ||
| View original record | -4- SEE ORIGINAL FOR SKETCH. The operation of the sliding pieces presents difficulties in both Detroit and Warner gears excepting the Stutz-Detroit gear, and in this case the box is lengthened to… | ||
| 02-page052 | Report and advertisement for the Millam Free-Wheel and Sprag system. | ||
| View original record | Left Page: Report on Millam Free-Wheel and Sprag BY HENRY E. MERRITT, D.Sc., A.M.I.M.E., A.M.I.A.E., Gear Technologist. THE "MILLAM" PATENT FREE-WHEEL AND SPRAG. The "Millam" Free-wheel is a device… | ||
| 02-page053 | The operation and advantages of the Millam Free-Wheel mechanism, complete with component illustrations. | ||
| View original record | Its Operation and Advantages The Millam Free-Wheel is a simple, circular piece of mechanism, which is inserted into the propeller shaft of motor vehicles of all descriptions, and its attachment… | ||
| 02-page054 | Required modifications to a gearbox roller cage for a 3rd speed easy change mechanism. | ||
| View original record | X 321 SECRET. DA. BY. HS. FROM H. (AD Le Canadel) FI/AD3.4.29. Rec'd at WW. 16.4.29. c. to Sg. Wor. E. CY. Dr.Claremont. GEARBOXES X 7310 X 5210 We need one of our 3rd speed easy changes as soon as… | ||
| 02-page055 | Assembly of a freewheel mechanism with a hand-cancelling lever. | ||
| View original record | -2- large diameter of cutter, plenty of clearance; other parts of the circumference will guide the cage. Cage controlled by narrow surface only on each side say .075". To save time I should like to… | ||
| 02-page056 | Modifications and manufacturing options for the freewheel mechanism in the G.4 gearbox sideshaft. | ||
| View original record | BY. From DA. c. to SG. Hs. 4523 DA1/M23.4.29. G.4. GEARBOX. FREEWHEEL IN SIDESHAFT. X.5310 X.523 Herewith we send N.sch.2881 shewing the modifications to the freewheel which R. asks for in… | ||
| 02-page057 | Technical memorandum discussing potential solutions to gearbox problems, focusing on silent and easy gear changes. | ||
| View original record | X523. HS. OY. EV. DA. Mr.Claremont. } FROM R. c. Lord Wargrave LHS. Eg. MOR. Mr.Fuller. PN. E. THE GEARBOX PROBLEM. R4/M3.6.29. X5210 X523 X7310 X4310 For a considerable time, we, and most others,… | ||
| 02-page058 | The disadvantages of the Salerni Coupling and proposed modifications to its operation. | ||
| View original record | -2- contd. Salerni Coupling. This is one of the cleverest attempts at making an easy change. Personally I like the coupling in its simplest form, but I do not like the various devices to overcome its… | ||
| 02-page059 | Gearbox design improvements, including helical gears and the Salerni coupling. | ||
| View original record | -3- contd. In conjunction with this scheme the 3rd. speed would probably be single or double helical gears, and the engagement be made by a jaw clutch. As far as we can see this combination would make… | ||
| 02-page060 | Communication regarding the experimental fitting of an epicyclic third-speed gear. | ||
| View original record | Y523. By. from Da. c. Sg. Hs. Dal/M21.9.29. EPICYCLIC THIRD SPEED GEAR. X.7640 X.7310 A.523 We send herewith N. Sch. 2946 showing the gear lever on the box. It has been set out as before to suit AC.7.… | ||
| 02-page061 | Requesting a new epicyclic clutch spring and altering the clutch clearance for the 3rd speed gear. | ||
| View original record | X523 Ry. from Da. c. Sg. Hs. Da2/M21.9.29. EPICYCLIC 3rd. SPEED GEAR X.7640 X.523 X.7310 We send herewith N. sch. 2949, a diagram of the forces in the controls, which we think will be self… | ||
| 02-page062 | Investigation into the comparative noise levels of spur, epicyclic, and internal gears for a silent 3rd speed gearbox. | ||
| View original record | Ry. from Da. C. Sz. 114. Y523 Da3/M24.12.29 X.5310 X.7310 X.523. SILENT 3RD SPEED GEARBOX. Herewith we send M.Sch.3002 - an investigation of the comparative merits of spur, epicyclic, and internal… | ||
| 02-page063 | Comparing an Isotta Fraschini's performance and gearbox with a proposed change speed gear design. | ||
| View original record | E. Da. ) FROM R RB. ) (At Le Canadel) c. Sg. Wor. By c. Mr. Claremont. X623 RU/M.1.30. X.4609 X.523 X.4510 CAR AND AERO WORK CHANGE SPEED GEAR Mr. Salerni visited Le Canadel yesterday. He came on an… | ||
| 02-page064 | Mr. Salerni's visit and a potential patent conflict over a gear arrangement. | ||
| View original record | -2- I want you to learn what you can from MR. Salerni's visits, (he asked to be allowed to visit WW. in my absence) but naturally reserve for RR. any points you see that can be altered, until such… | ||
| 02-page065 | Development of a silent 4-speed car change speed gear, potentially using a Salerni coupling. | ||
| View original record | X4523 De/Hdy.) FROM R. E. Hs. ) (At Le Canadel) RB/113.1.30. C. Sc. Wor. By. CAR CHANGE SPEED GEAR X.523 X.7310 X.5310. X.4510 I have asked Mr.Hardy to see if he can come here for one week clear,… | ||
| 02-page066 | Technical memorandum comparing the silence and performance of various gearbox designs. | ||
| View original record | X622 R. From Da/Hdy. (held up) C. Hs. Da. Da/Hdy1/M20.1.30. X.2061 X.523 C.7310 C.5310 GEARBOX - SILENCE. We have made some calculations on the various types of gearbox to determine the relative pitch… | ||
| 02-page067 | 'The Gearbox Problem,' reviewing current gearbox technologies and proposing a new epicyclic unit design. | ||
| View original record | MA. E.) FROM R. BY. HS.) (At Le Canadel.) R2/210.2.30. X.7310. X.3310. X.523. C. to SG. WOR. RG. C. to C. CK. Mr. LARMONT. THE GEARBOX PROBLEM. I have the impression that some definite pro- gress will… | ||
| 02-page068 | Gearbox design options, including reverse units, servo drives, control methods, and freewheeling. | ||
| View original record | (2) (d) Then comes the reverse unit which is positive by jaw clutches, preferably of epicyclic type. (e) Servo drive (always connected with the car.) I think the gears as shown in sketch 1. are… | ||
| 02-page069 | Gear and clutch design, comparing a 'Salerni' scheme with a suggested new constant mesh design. | ||
| View original record | (3) With the gear shewn (sketch 1.) there is no need of through drive clutches, either friction or jaw type, until we come to the top gear, which usually presents no difficulties, and a jaw clutch can… | ||
| 02-page070 | Investigations and proposals for resolving car gear problems. | ||
| View original record | X523 Da/Hdy. E. } FROM R. RV. Hs. } (At Le Canadel) C. Sk. Wot. } EL/M29.4.30. X5370 X7310 X523. CAR WORK - GEAR PROBLEM. I must first thank Messrs. Day and Hardy for their investigations and… | ||
| 02-page071 | Various gearbox design alternatives, including gear ratios, clutches, and braking systems. | ||
| View original record | -2- itself seems extremely good in several combinations. I had noticed the difficulty with 3 pinion driven trains of getting the 3rd. as high as we might wish, and examined most of the alternatives,… | ||
| 02-page072 | Gearbox design, including epicyclic trains, freewheel connections, and servo control systems. | ||
| View original record | -3- (6) For simplicity, and for a trial, we may obtain our neutral by letting the reverse run idle. (7) The side lever should have forward, neutral, and reverse, so that one gets a neutral in each… | ||
| 02-page073 | Servo-assisted gear changes and an alternative freewheel sideshaft design. | ||
| View original record | -4- (11) You will see that with either of these servos we should change in sequence (which is preferable) and we need not touch clutch or accelerator and lose time on a hill (or we could interlock if… | ||
| 02-page074 | The progress and results of the Salerni coupling applied to EAC.7. | ||
| View original record | X523 By. Hs. } FROM DA. Da2/M/7.5.30. GEARED OCS. X.5410 X.7310 X.523 We hope you have been able to get on with the details of the Salerni coupling applied to EAC.7. We are anxious to have some… | ||
| 02-page075 | List of urgent design work for cars, covering the petrol pump, carburetter, change gear, and hydraulic shock dampers. | ||
| View original record | Rs. E. ) FROM R. Ds. HS.) C. Sg. Wcr. C. Ry. F. Y522 R1/K20.5.30. K.2917 C.5770 K.523 K.7770 K.235 DESIGNING WORK. LIST IN ORDER OF URGENCY CARS. PETROL PUMP To simplify system and reduce cost (P.2)… | ||
| 02-page076 | On the philosophy of continuous improvement and forward-thinking design to maintain a standard of perfection. | ||
| View original record | -2- RH/20.5.30 contd. Some of these may be what are needed, and are no doubt valuable ideas that should not be lost. It is so expensive and such an upheaval to make changes that they must be… | ||
| 02-page077 | Gearbox changing, silence, and the potential adoption of freewheel technology. | ||
| View original record | Y523 R. from DA/HdV. c. SG. WGR. C. c. CX. PN. H. c. HS. BA. ba/hdy/1/15.1.30. X.523 X.7310 X.8310 X.2061. GEARBOX CHANGING AND SILENCE I discussed the gearbox situation with C. CX. and W. on Friday… | ||
| 02-page078 | Gearbox performance, comparing gear quietness and functionality with competitors like Graham-Paige, Chrysler and Armstrong-Siddeley. | ||
| View original record | -2- than one gear was appreciably increased. Shunting the car took less time. The so called easychange on Graham-Page and Chrysler cars works without much shock that is apparent, but we know that it… | ||
| 02-page079 | Problems and preliminary designs for a full epicyclic gearbox. | ||
| View original record | X582 R. from Da/Hdy. c. Sg. Rg. E. c. Hy. Hs. Da/Hdy1/M.2.4.30. X.7310 X.5310 X.523 GEARBOX PROBLEM. In reply to R1/M.4.30. we have been making preliminary designs for the full epicyclic gear as… | ||
| 02-page080 | Investigation into different methods of obtaining a necessary gear ratio, detailing five gear train arrangements. | ||
| View original record | -2- We have also investigated the following methods of obtaining the necessary ratio :- (1) Simple train annulus driven. (2) Simple train annulus driven driving through the cage of 2nd. speed to… | ||
| 02-page081 | Design investigation and patent application details for a synchro-mesh gear control system. | ||
| View original record | -3- The planet speed is .436 by engine speed, and the pitch velocity 230 ft. per min. CONTROL. We have made application for patents for :- (a) Clutch pedal interlock, with vacuum control. (b) Balanced… | ||
| 02-page082 | Analysis of gear change braking requirements, torque calculations, and potential control system improvements. | ||
| View original record | -4- Da/Hdvl/M12.4.30 contd. The 1½" for the application of the brake would not be required if the lever were stopped momentarily for this purpose. Actually, it seems necessary to provide for the more… | ||
| 02-page083 | Page from a report discussing transmission difficulties and suggestions related to coasting. | ||
| View original record | Da/Adv/1/12.4.30 contd. -5- Coasting presents some difficulties and seems to require a neutral between 3rd. and top marked on the quadrant at which the dogs are not withdrawn in addition to the… | ||
| 02-page084 | Three schemes for gearbox problems, including diagrams and proposals. | ||
| View original record | X523 To R. from Da. a. Sg. E. Rg. c. Hs. By. Dall/N14.4.30. X.7310 X.5310 X.523 RE : GEARBOXES. Enclosed herewith is a memo which Mr.Hardy has prepared on the work on the gearbox problem. We also… | ||
| 02-page085 | Different gearbox and clutch mechanisms, comparing Armstrong-Siddeley, epicyclic, and Chrysler designs. | ||
| View original record | -2- This is one more position than provided by Messrs. Armstrong-Siddeley viz. "Coast". In this position the dog clutch is not withdrawn, so that the engine can be restarted without difficulty on… | ||
| 02-page086 | Technical memo discussing improvements to the change gear mechanism, including jaw clutches and resilient couplings. | ||
| View original record | X522 Da/Hdy. ) FROM R. Hs. E. (At Le Canadel) C. SS. WOR. R2/M29.4.30. X523 X5310 X7370 CAR WORK - CHANGE GEAR. When the box is fitted with any form of constant mesh gears with jaw clutch change, the… | ||
| 02-page087 | Alternative designs for an 'Easy Change Third' gear, comparing a free wheel side shaft with a Maybach scheme. | ||
| View original record | S/W Hs X5-3. To Hs. from Sg. re Easy Change Third. Sg2/E26.5.30 Copy to R. I am not at all clear as to the direction in which R. is proposing to work with a view to having at least an easy change… | ||
| 02-page088 | Proposal for a scheme to cover the exposed lubricated surface of the change speed ball on the L.H. chassis change gear. | ||
| View original record | X523 By. from Da. c. Sg. Hs. Da3/M29.5.30. K7772 Y523 L.H. CHASSIS CHANGE GEAR. Herewith we send N. scheme. 3112 showing the proposal for covering in the exposed lubricated surface of the change speed… | ||
| 02-page089 | Gearbox problems and proposed epicyclic schemes, with comparisons to other designs. | ||
| View original record | Y523. Hs. Ry. FROM R. c. Sg. Wor. c. Ph. Ds. R1/M26.5.30 X.7310 X.5310 X.523 GEARBOX PROBLEM. We propose to concentrate on our complete epicyclic scheme and what we have given Derby, viz. (1) Constant… | ||
| 02-page090 | Automatic gear change control systems, comparing features and potential designs. | ||
| View original record | -2- Change speed relay control is on the steering column. This relay will probably be electrical, but it can be oil or vacuum with certain disadvantages. By using double way silent ratchets for the… | ||
| 02-page091 | Technical objections to the Maybach gearbox and considering alternative 'Easy Change 3rd' gear schemes. | ||
| View original record | SG. from E. COPY. Y5-3 R1/M29.5.30. re EASY CHANGE 3rd. I have deferred answering your memo. SO4/E26530 until today with a view to getting a definite ruling on the Maybach gearbox while HS. was at WW.… | ||
| 02-page092 | The development and peculiarities of a freewheel sideshaft for a 25 HP gearbox. | ||
| View original record | -2- it can be seriously considered. There appears to be no physical reason except for our larger size why the change from top to third, and vice versa, cannot be made to operate as easily as the spool… | ||
| 02-page093 | Decision to drop the Maybach gearbox and focus on developing an alternative easy-change third gear. | ||
| View original record | Y52 3 HS. E. from Hs. re Easy Change Third Gear. Sg13/EHO.5.30 Copy to Mr. Ht. PH. Thanks for El/M:9.5.30. I note that the Maybach gear box has been definitely dropped. Such being the case will Hs.… | ||
| 02-page094 | The failure of a free-wheel device on car 12-G4 after 588 miles. | ||
| View original record | X 523 To R. From Hs/Rn. c. to SS. Sor. c. to DE. R. c. to Sy. HS/Rn.4/MG.31.5.30. FREE-WHEEL. We have run a free-wheel device 588 miles on 12-G4. The free-wheel has failed due to one of the rollers… | ||
| 02-page095 | On the failure of the free-wheel mechanism for the third gear on a 20 HP car and the decision not to apply it to the Phantom car. | ||
| View original record | To EG. From Hs. c. to WGR. c. to E. c. to FH. X523 Hs.6/MJ.2.6.30. X523 1730 EASY CHANGE THIRD GEAR. Replying to eg.13/230.5.30. You will see from our reports that the free-wheel which we have been… | ||
| 02-page096 | Development and sales potential of an easy-change third gear and free-wheel mechanism. | ||
| View original record | S/W. Hs...from PN. Copy to Sg. K523 PH.9/WTG.6.30. With reference to your Hs.6/MJ.2.6.30. Easy Change Third Gear. There is no doubt that, whilst we are waiting for the two or three years which may… | ||
| 02-page097 | Internal memorandum discussing an experimental easy change gearbox using a constant mesh double helical gear. | ||
| View original record | To DG. FROM HS. C. to Mor. C. to R. (VS-?) No. 2/AD. 2.7.30. K 7510 K 35310 EASY CHANGE GEAR. Replying to Sg12/21.7.30. 14-EX. car has fitted to it an experiment using a constant mesh double helical… | ||
| 02-page098 | Failed free-wheel for the 25 HP model and the need for a modified design. | ||
| View original record | -2- No.2/AD.2.7.30.Contd. The free-wheel on the 25 HP. failed. We are still waiting for the completion of the Salerni scheme. If there is going to be an immediate demand for an easy change, the only… | ||
| 02-page099 | The development of an epicyclic easy-change gearbox, noting issues with the braking system. | ||
| View original record | X1323 Extract from - SG. RG. }FROM R. HS. BY. R1/W8.7.30. WORK AT WW. EASY CHANGE GEARS. DA/HDY. has spent the week on epicyclic change gear. Much has been done to find possibilities of brakes. The… | ||
| 02-page100 | 'Silent Third Gear' and the potential purchase of a Graham Paige car for evaluation. | ||
| View original record | S/W. To Hs. from Sg. V-7310 V-5310 Sg7/D30.7.30. Just a note to remind you to write the note to R., with copies to others concerned, immediately after the holiday, in regard to the question of Silent… | ||
| 02-page101 | The urgent requirement to improve the gearbox for the Phantom engine, focusing on the 2nd and 3rd speeds. | ||
| View original record | Hs. } FROM R. Hy. } Y523 R7/M22.8.30. E. Sg. Wor. X.7310 X.5310 X.523 CAR WORK - CHANGE GEAR POSITION. We are looking upon this as a very urgent matter. It is difficult to get anything sufficiently… | ||
| 02-page102 | Testing of competitor cars, Studebaker and Graham Paige, in relation to developing a silent third gearbox. | ||
| View original record | Sg. From Hs. c. to Wor. 523 Y810 Y830 Y83/0 Hs.4/MJ.29.8.30. SILENT THIRD GEAR. Replying to Sg7/080.7.30. This matter has been fully discussed with H. On Wednesday the 27th.inst., we took to R.W. a… | ||
| 02-page103 | Silent third gear and comparing Graham Paige and Studebaker cars. | ||
| View original record | Hs S 23 X528 Y310 Y7310 To Hs. from Sg. re Silent Third Gear. Bg19/EL.9.70 Thanks for Rs.4/HT.29.8.30. I am delighted to hear that you took the Graham Paige down to R. and demonstrated it. Sorry to… | ||
| 02-page104 | Summary outlining design requirements and proposed schemes for a new change gear system, focusing on silent operation and gear engagement methods. | ||
| View original record | SG. } FROM R. RB. } c. EG. Wor. S. L.C. EP. FR. X523 N1/20.9.30. X.523 X.531G X.731G CHANGE GEAR SUMMARY UPON WHICH OUR WORK IS BASED. It is understood and agreed that at least we must have a more… | ||
| 02-page105 | Technical comparison of various gearbox designs including spool gear, freewheel & jam clutch, and synchro-mesh. | ||
| View original record | RL/10.9.30. contd. -2- SPOOL GEAR. (Graham-Paige) and Chrysler) (1) 3 pairs of gears always in mesh (both idling and direct drive) and there is no reason for easier change except :- (2) 3rd. to 4th.… | ||
| 02-page106 | Typed page from a report discussing an epicyclic gear design and project challenges. | ||
| View original record | F1/M.8.30 contd. -3- as regards change). One other design was moot of an epicyclic 3rd. and 4th. with lower gears than ordinarily, but I did not consider this perfect enough to make, so stopped the… | ||
| 02-page107 | Various gearbox schemes to achieve a silent third gear. | ||
| View original record | Sg. from Hs. C. to WOr. C. to PN. 8 52/31 Ref.G/W.J.2.9.30. xS2S xT3in xT3ib SILENT THIRD GEAR. Replying to sg19/21.9.30. T.W. are really busy on various gear-box schemes. We found when we were there… | ||
| 02-page108 | Report comparing the Graham Paige car to the Phantom II, leading to a proposal for a new engine construction experiment. | ||
| View original record | -2- Hs.2/ML.2.9.30.Contd. R. was quite impressed with the Graham Paige, almost to the point of being annoyed by its good features. The silence of the third gear shewed up to be very much better than… | ||
| 02-page109 | Development of a silent third gear, expressing concern over a return to an epicyclic gear design. | ||
| View original record | X523. To Hs. from Sg. Sg12/E8.9.30. X.523 X.5310 X.7310 SILENT THIRD GEAR ETC. Referring to Hs2/1412.9.30, you will have received a copy of Rq/M.9.30. I should be glad if you could tell me what line… | ||
| 02-page110 | Schemes for a silent third gear, including an epicyclic design and fitting a freewheel to a Phantom car. | ||
| View original record | To Sg. From Hg. 8523 Hg.3/W.9.9.30. X528 X5310 SILENT THIRD GEAR ETC. Replying to Sg12/SS.9.30. We do not know definitely what form the schemes will take which R. mentions in his memo 2l/Al.9.30. It… | ||
| 02-page111 | Modifications to cure a rattle in the L.H. Phantom change gear mechanism. | ||
| View original record | X523, By. from Hs/GWH. Hs/GWH/AD22.9.30. L.H. PHANTOM Re - CHANGE GEAR MECHANISM. X.523. X.7772. We have cured the rattle in the change gear mechanism after attention to the following parts :- G.78579… | ||
| 02-page112 | 'Maybach' gearbox and twelve-cylinder engine and the prospect of purchasing a car for evaluation. | ||
| View original record | To Sg. From Hs. Y's ys061. ys13. HS.1/AJ.24.9.30. With reference to the attached. This is exactly the same gearbox as R. and myself tried on the Twelve Cylinder 'Maybach' in the spring. There are a… | ||
| 02-page113 | Various 'easy change' gearbox schemes for the Phantom II and 25 HP models following a visit to West Wittering. | ||
| View original record | To Sg. from Hs. c. Mot. c. SY. X523. Hal/AD2.10.30. VISIT TO WEST WITTERING 30.9.30. X.7310. X.5310. X.523. Easy Change. We found that R. had taken your note seriously and was busy making simpler… | ||
| 02-page114 | Gearbox from the U.S.A and the plan to fit Maybach type clutches. | ||
| View original record | Hel/AR/12.10.31 contd. -2- With regard to the gear box from U.S.A. he was quite interested in this and would like to see same when it arrives. It was also agreed Derby should make a scheme to fit… | ||
| 02-page115 | From 'Sg.' to 'Hs.' discussing development schemes for 'easy change' gearboxes, including the Phantom II and Maybach clutches. | ||
| View original record | Y523 Hs 17.3.10 18.3.10. X523. To Hs. from Sg. Re Easy Change. Sg3/E3.10.30 Copy to Wox. BE. Thanks for Hs1/AD2.10.30. I am very pleased to note that R. has taken this matter seriously and is busy… | ||
| 02-page116 | Differences between the proposed epicyclic gear for the Phantom and the 25 HP, and the reasoning for fitting Maybach clutches. | ||
| View original record | YS23. To Sg. From Hs. c. to Mr. c. to HV. Hs.2/MJ.4.10.30. X.7310. X.5310. X.523. Re. Easy Change. Replying to SgS/23.10.30. The chief difference between the proposed epicyclic gear for the Phantom… | ||
| 02-page117 | Construction of a specimen epicyclic 3rd speed train for testing purposes. | ||
| View original record | X523 BY. FROM DA. DA1/T4.10.30. C. to - SG. C. to - HB. GEARBOXES - EPICYCLIC 3rd. SPEED. X.7310. X.5310. X.523. Herewith we send N. sch. 3149. shewing the epicyclic 3rd. speed train in the revised… | ||
| 02-page118 | Confirming the dispatch of drawings for a revised epicyclic 3rd speed gearbox for testing purposes. | ||
| View original record | X593 BY. FROM DA. Copy to - HS. DA1/103.10.30. REVISED EPICYCLIC 3rd. SPEED GEARBOX. X.5310. X.7310. X.583. This is to confirm having sent you on Saturday N. sch. 3155, a drawing of the gears in the… | ||
| 02-page119 | Proposal for a combined direct electric and mechanically geared transmission system. | ||
| View original record | Y523. DA. HS. BY. FROM R. R2/114.10.30. (DESPATCHED 30.10.30.) CHANGE GEAR - COMBINED DIRECT ELECTRIC, & MECHANICALLY GEARED. C. to SO. C. to WOR. C. to PN. C. to Mr. CLAREMONT. Since the engine revs.… | ||
| 02-page120 | Schemes for a revised epicyclic 3rd speed gearbox. | ||
| View original record | X 523 BY. FROM DA. C. to SG. HS. DA1/M16.10.30. REVISED EPICYCLIC 3rd. SPEED GEARBOX. X. 523. X.5310. X.7310. We send herewith N. schemes 3150/51.. shewing particulars of the casing of this gearbox.… | ||
| 02-page121 | Revisions to the epicyclic third gearbox and an accompanying drawing. | ||
| View original record | Y. FROM DA. C. to SG. HS. X523 DA1/M25.10.30. EPICYCLIC THIRD GEARBOX REVISED. X.523. X.7310. X.5310. Herewith we send N. sch. 3156 shewing the actuation of the gears in the three speed box. It also… | ||
| 02-page122 | Modification to the jaw clutches in the revised epicyclic third-speed gearbox. | ||
| View original record | BY. FROM DA. Copy to SG. Copy to HS. X.523 DA1/M28.10.30. EPICYCLIC THIRD SPEED GEARBOX REVISED. X.7310. X.5310. X.583. Herewith we send M. sch. 3356. showing a modification to the jaw clutches in the… | ||
| 02-page123 | Sending scheme 3159, detailing a modification to the 1st speed dogs for the all-epicyclic gearbox. | ||
| View original record | X523 BY. FROM DA. Copy to SG. Copy to HS. DA2/M29.10.30. ALL-EPICYCLIC GEARBOX. X.523. X.7310. X.5310. Herewith we send N. scheme 3159., shewing a modification to the 1st. speed dogs for the… | ||
| 02-page124 | On revisions to the epicyclic 3rd speed gearbox, detailing an experimental lubrication system. | ||
| View original record | BY. FROM DA. Copy to SG. Copy to HS. X523 DA1/MS1.10.30. EPICYCLIC 3rd. SPEED GEARBOX REVISED. X.7310. X.5310. X.523. Herewith we send M. sch. 3161. showing the arrangement of the oil pump and… | ||
| 02-page125 | Revisions to the epicyclic 3rd speed gearbox. | ||
| View original record | BY. FROM DA. DAL/10.11.30. Copy to SG. Copy to HB EPICYCLIC 3rd. SPEED GEARBOX REVISED. X.7310 X.5310. X.523. Herewith we send N. sch. 3160. giving further particulars of the box, namely, the change… | ||
| 02-page126 | Review of the company's position on adopting various contemporary change gear technologies. | ||
| View original record | SG. FROM R. C. to WOR. BY. C. to HS. PH. C. to C. P. C. to DA. E. RL/MS.11.30. X.523. X.7310. X.5310. X.4510. X.2081. CHANGE GEAR - PRESENT POSITION. Although we have given this subject much attention… | ||
| 02-page127 | The development and comparison of various gearbox and transmission technologies. | ||
| View original record | (2) applied to a 3 speed box, which is not ideal for present driving conditions, which ask for a fairly low top and high third. This gear change is not available to us and I should not recommend its… | ||
| 02-page128 | Design update memo discussing the development of a new 3-speed gearbox with pre-selection. | ||
| View original record | (3) the design work this month. In the meantime Derby have many parts that they can proceed with. We finally came to the conclusion that to overcome certain difficulties of control and operation a 3… | ||
| 02-page129 | Modifications and additions for a revised epicyclic 3rd speed gearbox. | ||
| View original record | BY. FROM DA. Copy to SG. Copy to HS. X523 DA1/M4.11.30. X.7310 X.5310. X.523. REVISED EPICYCLIC 3rd. SPEED GEARBOX. We send herewith N. sch. 3163, shewing some slight modifications and additions to… | ||
| 02-page130 | Revised details for an epicyclic 3rd speed gearbox, including a query about a fabric coupling. | ||
| View original record | BY. FROM DA. X523 DA1/W7.11.30. Copy to SG. Copy to HS. EPICYCLIC 3rd. SPEED GEARBOX REVISED. X.7310. X.5310. X.523. Herewith we send N. sch. 3166. shewing additional details of the above, namely, the… | ||
| 02-page131 | Modifications to the servo and brake arrangements for a revised epicyclic 3rd speed gearbox. | ||
| View original record | X 823 BY. FROM DA. Copy to SG. Copy to HS. DA2/47.11.30 X. 7310 X. 5310 X. 523. EPICYCLIC 3rd. SPEED GEARBOX REVISED. We herewith send N. scheme 3168. - Modifications to the servo and brake… | ||
| 02-page132 | Gearbox problem and a proposed electrical change speed gear with a magnetically coupled clutch. | ||
| View original record | Y V23 BY. FROM DA. DA3/M27.11.30. Copy to SG. Copy to HS. GEARBOX PROBLEM. Herewith we send N. scheme 3167. shewing the electrical change speed gear and magnetically coupled clutch proposed by R. in… | ||
| 02-page133 | Revisions to the Epicyclic 3rd Speed Gearbox and related schematics. | ||
| View original record | P.V. FROM DA. C. to SG. HS. X523 EPICYCLIC 3rd. SPEED GEARBOX. (REVISED.) DA1/H11.11.30. X.7310. X.5310. X.523. Herewith we send N. sch. 3152, - Plan View of the above. It will be noticed that the… | ||
| 02-page134 | Modification to shorten the oil pump for the epicyclic 3rd speed gearbox. | ||
| View original record | BY. FROM DA. C. to SG. HS. X623 DA2/202.11.30. EPICYCLIC 3rd. SPEED GEARBOX (REVISED) - OIL PUMP. X.7310. X.5310. X.523. On looking further into the assembly of this box we think we should like to… | ||
| 02-page135 | Proposed assembly procedure for a revised epicyclic 3rd speed gearbox. | ||
| View original record | BY. FROM DA. Copy to HS. X523 DA3/102.11.30. X.7310. X.5310. X.523. EPICYCLIC 3rd. SPEED GEARBOX REVISED - ASSEMBLY. We should like to give you an idea of how we propose to assemble this box so that… | ||
| 02-page136 | Design and testing of epicyclic gearbox units for 25HP & 45HP models, including gear types and braking systems. | ||
| View original record | HS. BY.} FROM R. DR. (AT Le Canadel.) C. to SG. WCR. C. to E. RIC. 25HP. & 45HP. GEARBOX. EPICYCLIC UNITS. I am very anxious to get a specimen gear made of the type we are proposing to fit with the… | ||
| 02-page137 | Allocation of work for a steering column job related to a vacuum control pre-selection scheme. | ||
| View original record | COPY. (2) H1/M20.12.30 cont. It will be remembered that there is the steering column job to do for the vacuum control of the double top pre-selection scheme. Mr/EV. volunteered to do this but he may… | ||
| 02-page138 | Revisions to the vacuum control for an epicyclic 3rd speed gearbox, specifically regarding the piston and stops. | ||
| View original record | X523 BY. FROM DA. X523. DA3/M10.1.31. C. to SG. HS. EPICYCLIC 3rd. SPEED GEARBOX REVISED - VACUUM CONTROL. We send herewith N. sch. 3194. shewing the proposed new position for the stops. It will be… | ||
| 02-page139 | Design considerations and alternatives for a reverse gear mechanism in a gearbox, comparing Maybach and Silver Ghost types. | ||
| View original record | XS23 DA/HDY. E.) FROM R. HS. BY. ) (At Le Canadel.) R1/M23.1.31. C. to SG. WOR. HY. RHC. JAPAN 3. GEARBOX. X.5310 X.523. After looking over the preliminary drawings for the above I wired that I… | ||
| 02-page140 | Hand-drawn sketch of a gearbox assembly with annotations. | ||
| View original record | LOCKING FORK FROM BACK OF BOX 3rd (OPEN) 2nd (OPEN) COUNTER SHAFT 1ST 2ND 3RD 2ND DRIVES REVERSE LARGER THAN REVERSE DRIVER 1ST AND REVERSE IDLERS ABOUT SAME DIAMETER SHEWN ALL GEARS OUT SHAFT SUPPORT… | ||
| 02-page141 | Design of an eccentrically engaged reverse gear, including pinion materials and tooth profiles. | ||
| View original record | DA/HDY. E.) FROM R. EC. HS. ) (At Le Canadel.) Copy to - SG. WOR. RL/M25.1.31. JAPAN 3. GEARBOX POSITION. Design As regards eccentrically engaged reverse I think that if Works can arrange to cut the… | ||
| 02-page142 | Alternative gear and layshaft designs, referencing the Phantom II model. | ||
| View original record | (2) 2nd. That none are so satisfying as the original - i.e. with special gear - present and Phantom 2. 3rd. That the original although appearing costly Perhaps can be made of a more crude design and… | ||
| 02-page143 | Sketch of a swinging reverse gear mechanism. | ||
| View original record | (3) SWINGING REVERSE. SKETCH 1. Reverse slider. Looking backwards from engine. | ||
| 02-page144 | Final urgent recommendation with a sketch detailing the assembly of a shaft and pinion within a box. | ||
| View original record | (4) FINAL RECOMMENDATION. URGENT. SKETCH 2. Central. Rear end of box. Bore box probably one size right through, pass pinion and shaft in from rear, put on wheel and tighten up - nut through hole in… | ||
| 02-page145 | Required alterations to easy change silent gearboxes based on information from Dr. Maybach. | ||
| View original record | YS23 To R. From Hs/Rs. c. to Dr. E. c. to Sy. Nor. Sk. Hs/Rs.14/KT.2.3.31. X.7310. X.5310. X.523. P.R. EASY CHANGE SILENT GEARBOXES. In view of the information obtained from Dr. Maybach, it appears… | ||
| 02-page146 | Design of change gears, specifically the issues with Maybach jaws and comparing them to alternative schemes. | ||
| View original record | HS. DA/HDY. R. FROM R. (At Le Canadel.) X653 F1/M2.3.31. c. to SG. WOR. BY. CHANGE GEAR. MAYBACH JAWS ETC. X.2200. X.525. X.4510. (1) It does not seem that these will work when we try to change from… | ||
| 02-page147 | Investigation into combining Salerni rings with a Maybach coupling for a change gear. | ||
| View original record | R. FROM DA/HDY. X53 DA/HDY.1/46.3.31. C. to SG. WOR. C. to HS. BY. R. CHANGE GEAR. MAYBACH JAWS. A.2200. X.523. With reference to RL/M2.3.31. para. 2., we think there are definite possibilities in the… | ||
| 02-page148 | Demonstration of a Maybach easy change gearbox and a proposed comparison with a Daimler system. | ||
| View original record | To Sg. From Hs. c. to Wor. c. to S. c. to Da. c. to Da/Hdy. c. to PN. EASY CHANGE GEARS ETC. -------------------- We have now got 14-EX. car fitted up with the Maybach jaws, and it is working… | ||
| 02-page149 | Arranging for a car from Stratton Instone to be brought to Conduit St for a meeting. | ||
| View original record | X 1523. RECEIVED 8 MAR SA. H.S....from PN. Copy to Sg. PN.2/WT9.3.31. As I informed Rm. on the 'phone to-day I have arranged with our friend Mr. Mackie of Stratton Instone, for one of their cars to be… | ||
| 02-page150 | Arranging a meeting to see and try the '14-KX' in relation to Easy Change Gears. | ||
| View original record | X5-23. To Hs. from Sg. Copy to Wor. E. DA. DA/Hdy. FN. Easy Change Gears etc. Sg15/E9.5.31 I am in receipt of Hs.3/MJ.6.5.31. I should certainly like to see and try 14-KX and propose that this shall… | ||
| 02-page151 | Technical memo discussing gearbox design, improvements, and comparisons with Maybach gearboxes. | ||
| View original record | HS. DA/HDY. ) FROM R. E. BY. ) (TO Le Camadel.) C. to - SG. WOR. GEARBOXES. X 523 R2/MB.3.31. X.7310. X.6510. X.523. So far we have not got on at all with the above to make any definite improvement… | ||
| 02-page152 | Preliminary tests of an Epicyclic gearbox with vacuum controlled twin top change gear on chassis No. 27-EX. | ||
| View original record | To H. From Hs/Lid. c. to SG. Nor. c. to E. Da. Hy. X523 Hs/Lid.4/AT. 51. 3. 31. X7310 X523 EPICYCLIC EASY CHANGE GEARBOX. We have carried out some preliminary tests on the Epicyclic gearbox with… | ||
| 02-page153 | Gearbox noise and gear change issues, specifically concerning epicyclic gears and Maybach dogs. | ||
| View original record | (2) two pairs of helicals are revolving more slowly for the same engine speed and make less noise, but the epicyclic noise counteracts this. The epicyclic third is very noisy under load much more… | ||
| 02-page154 | Gearbox issues, detailing noise, complexity, and proposed improvements to the gears and Maybach jaws. | ||
| View original record | (3) Hs/11.4/Hr.I.S.S.cont. (b) A big "clonk" from the toggle mechanism each time the gear is changed. (c) The combination of having a gear change by gear lever and from the steering wheel is very… | ||
| 02-page155 | Potential 'crashing engagement' issue with the Maybach change gear vacuum control. | ||
| View original record | HS/RM. FROM DA/HDY. X1523 DA/HDY1/M14.3.31. C. to R. SG. E. BY. MAYBACH CHANGE GEAR. VACUUM CONTROL. X.2200 X.523. You are no doubt aware that with the vacuum controlled Maybach jaws it is still… | ||
| 02-page156 | Telegram from Loxandoux to Reycar regarding a vibration issue that occurs during acceleration in third gear. | ||
| View original record | ROLLS-ROYCE LTD. TELEGRAM RECEIVED BY TELEPHONE. X5623. x634. angletene. Received Time Received: 5-37. By: JG. Date: 1-4-37. To: Reycar. from: Loxandoux 1st. Thanks for telegram & letter. Elliott will… | ||
| 02-page157 | Cablegram from France concerning a gearbox fault. | ||
| View original record | K.S.23. R/16 2.4.31. Royce. "Les Mimosa" Le Canadel. Par le Lavandou, (VAR) FRANCE. worst fault in gearbox because too steep an angle in jaws causes dogs to be banged into opposite gear these we can… | ||
| 02-page158 | Noise issue in a gearbox with epicyclic third speed and the proposed solution. | ||
| View original record | To H. From Hs. c. to Br. Mor. c. to R. Gs. c. to Dy. [Handwritten] X5-3 Hs.4/RT.3.4.31. [Handwritten] 8523 [Handwritten] 1-200 GEARBOX WITH EPICYCLIC THIRD SPEED. The distressing noise we have had… | ||
| 02-page159 | Design challenges and mechanics of a new epicyclic gearbox scheme, focusing on gear meshing and speed synchronization. | ||
| View original record | HS. DA. ) FROM R. BY. ) (At Le Canadel.) C. to SG. MOR. C. to R. PN. DOUBLE TOP OUR EPICYCLIC SCHEME. This being quite a departure we must expect much trouble before it is right. Since we are changing… | ||
| 02-page160 | Gear changes, throttle operation, and the design of face jaws for a Maybach component. | ||
| View original record | -2- to wait until the engine is accelerated before we coupled up to drive the car or for the car to drive the engine. So that one could get our change to 3rd. by closing the throttle but we should… | ||
| 02-page161 | Technical memorandum discussing the design and merits of a double top gear system. | ||
| View original record | DA. FROM R. HS. (I HAD TO BUNDLE.) 1. to W. RCR. 2. to E. HY. X523 RLW/17.4.31. DOUBLE TOP GEAR. X.523. X.7310. Mr. Lidsay's opinions and criticisms are premature. Our scheme of control will be sound… | ||
| 02-page162 | Brief typed note regarding a potential issue with jaws and gears. | ||
| View original record | I believe it will work with just plain jaws without any grab on the teeth, but it might miss gear. shall anxiously await further news. R. | ||
| 02-page163 | Two points regarding issues with an epicyclic 3rd speed gearbox. | ||
| View original record | HS. FROM DA. X623 DA2/M9.4.31. EPICYCLIC 3rd. SPEED GEARBOX. Referring to your HS/LID4/KT31361., we understand that this report is now cancelled. We should like however to refer to two points: (1)… | ||
| 02-page164 | Slow progress in developing an Epicyclic Easy Change Gearbox with a silent third gear. | ||
| View original record | To- Wor. from Sg. re Epicyclic Easy Copy to Bs. B. Change Gearbox. Da. BK. Ph. Referring to Hs/Lid.4/KT.1.3.31 a perusal of this memo. shows a very lamentable state of affairs in regard to our having… | ||
| 02-page165 | Instructions for modifications to the Maybach dogs operating the epicyclic 3rd speed and top gear. | ||
| View original record | Y523. BY/TRD. [crossed out] c. Hs. [crossed out] c. REG. [crossed out] BY10/G.13.4.31. EPICYCLIC 3RD. R. has definitely instructed that we should try the Maybach dogs, operating 3rd speed and top, on… | ||
| 02-page166 | Epicyclic Easy Change Gearbox. | ||
| View original record | Sgd. from Wor. Copy to Hs. X523. Wor/T/13.4.31. Re Epicyclic Easy Change Gearbox Thanks for your memo Sg21/E10.4.31. Personally I think it would be inadvisable for you to write to R. on the subject at… | ||
| 02-page167 | Patent royalties for Maybach jaws and comparing costs with Mr Ricardo's combustion chamber. | ||
| View original record | X523 BY. FROM R. (At Le Canadel.) R2/M14.4.31. C. to SG. WOR. C. to RG. E. HS. MAYBACH AND OTHER PATENT ROYALTIES. X.523. X.2200. I quite agree with BYS/G30.3.31.. re. Maybach jaws. so far we have not… | ||
| 02-page168 | The testing and modification of an epicyclic 3rd speed gearbox following trials at Brooklands. | ||
| View original record | X523 R. FROM DA. DA1/M16.4.31. Copy to HS. EPICYCLIC 3rd. SPEED GEARBOX. We tried this box again yesterday at Brooklands. The modifications made were that the existing 5 tooth jaw pieces had had the… | ||
| 02-page169 | Issues and potential improvements for a gearbox with an epicyclic 3rd speed and Maybach clutch. | ||
| View original record | To R. From Hs. c. to SE. Cor. c. to E. Dn. c. to Ey. Hs.2/MJ.17.4.31. YJ-200 GEARBOX WITH EPICYCLIC 3RD. SPEED. We have had this box running again having altered the angle of the jaws on the Maybach… | ||
| 02-page170 | Letter questioning the decision not to acquire a Maybach gearbox for the Phantom II model, despite its successful trial. | ||
| View original record | Copy. 1553 PN. 5/WT21.4.31. X2-2-e-rs. S/W. Rm...from PN. Copy to SE. Referring to your HS/Rml7/KT.2.3.31. and your trial of the Maybach car in Berlin, I am not quite clear having regard to the heaps… | ||
| 02-page171 | Trial of a Buick car fitted with a synchro-mesh 'Easy Change Gear' device. | ||
| View original record | To R. From Hs. c. to Sg. Wor. c. to E. Da. c. to Hy. EASY CHANGE GEAR. Yesterday we had a trial run on a Buick car fitted with a synchro mesh device between the second and third speeds (three speed… | ||
| 02-page172 | Cost and technical suitability of a license for the Maybach Easy Change Gear. | ||
| View original record | ITS RECEIVED FROM F.G. COPY to R. Sor. X52-3 X209 License for Maybach Easy Change Gear. Sg7/H21.4.31 Replying to BY10/G.17.4.31 you will have received RS/M14.4.31. I am glad to see that R. feels that… | ||
| 02-page173 | Trial of a Buick synchro mesh gearbox as an 'easy change gear' alternative. | ||
| View original record | To Sg. From Hs. c. to Wor. c. to FH. 8523. Hs.1/LJ.22.4.31. X.523. X.3317. EASY CHANGE GEAR. We strongly recommend that you try a Buick car with a synchro mesh gearbox. Undoubtedly one of the first… | ||
| 02-page174 | Outlining the reasons against purchasing a Maybach gearbox, citing integration difficulties, performance, and royalty costs. | ||
| View original record | To PN. From Ha/Rm. X523 Ha/Rm.14/NT.28.4.31. X.2200. X.523. With reference to PN.5/WEI.4.31 we do not want to buy a Maybach gearbox because we know now how to make one operate when we use these… | ||
| 02-page175 | 'press button, electrical' scheme to gain a competitive advantage over Hispano and Bentley. | ||
| View original record | HS. DA. ) FROM R. E. BY. ) (At Le Canadel.) Copy to - SG. MOR. DOUBLE TOP. X. 2061. X. 523. If we get a good scheme it will give us a lead over Hispano and Bentley. People here speak well of the… | ||
| 02-page176 | Proposed temporary brake fitting for an epicyclic 3rd speed gearbox. | ||
| View original record | BY. HS. } FROM DA. Copy to- SG. X523 DA1/M23.4.31. EPICYCLIC 3rd. SPEED GEARBOX. Herewith we send N. Sch. 3271. shewing a proposed method of temporarily fitting a brake to the sun. It will be seen… | ||
| 02-page177 | Trial of a synchro mesh gearbox in a Buick car. | ||
| View original record | [Handwritten Top Left: H3] [Handwritten Top Center: XS-3] [Handwritten Top Right: XS-3. X3317.] [Stamp: RECEIVED MAY 28] To R. from Rg. re Easy Change Gear Corr to Mr. Hs. You will have received a… | ||
| 02-page178 | Investigation into 'Easy Change Gear' systems, including Voisin, Graham Paige, and Buick synchro-mesh. | ||
| View original record | To R. From Hs. c. to Sg. For. c. to Dr. Da. c. to By. Hs/YWJ.2.5.31. X.523. X.2061. EASY CHANGE GEAR. On our return from U.S. we called at London to see whether we could try a Voisin car with a… | ||
| 02-page179 | Acquisition of competitor cars and gearboxes for evaluation, specifically a Voisin and a Graham Paige. | ||
| View original record | COPY. 8523. X.2061. X.523. To Hs. From Sg. Easy Change Gear. Sg2/E4.5.31. Referring to Hs.5/MJ.2.5.31. I note you were unable to see or try a Voisin car with magnetic controlled double top. If you… | ||
| 02-page180 | Highlighting design 'fouls' on a print for an Epicyclic 3rd Speed Gearbox. | ||
| View original record | c. Hs. 8523 BY/Cgh18/G.6.5.31. EPICYCLIC 3RD. SPEED GEARBOX. We send you herewith print of M. Sch. 3271 on which we have shown in red the various 'fouls', which would occur if the scheme is produced… | ||
| 02-page181 | The challenges in obtaining silent helical gears for a quiet, easy-change third gear. | ||
| View original record | To Wor. From Hs. c. to SY. c. to Hy. c. to RHC. HELICAL GEARS. X.523. X.2061. All our immediate proposals for a quiet easy change third, are depending on us being able to obtain silent helical gears.… | ||
| 02-page182 | Clarifying intended modifications and instructions for an epicyclic 3-speed gearbox. | ||
| View original record | BY. FROM DA. Copy to HS. X523 DA3/MS.5.31. EPICYCLIC 3rd. SPEED GEARBOX. Replying to EY/CUHLS/U6351., we regret that we did not add notes as we intended to do explaining how we intended to deal with… | ||
| 02-page183 | Design of a future 25HP synchromesh gearbox, comparing it with a Buick design. | ||
| View original record | HS. ) FROM R. BY. ) X 523 RIO/M28. 5. 31. C. to SG. WOR. C. to MY. RIC. FUTURE 25HP. GEARBOX. SYNCHRO MESH. X. 5310. X. 523. It is difficult to understand the time such things take but we find certain… | ||
| 02-page184 | The conversion to an electrically controlled friction type gearbox. | ||
| View original record | HS. } FROM R. BY. } X1523 R11/M28.5.31. C. to SG. WOR. C. to HY. RHC. 4SP. - DOUBLE TOP. X.7310. X.523. This should be ready for converting to electrically controlled friction type in the present box… | ||
| 02-page185 | Query regarding gear lever movement and load for a J. & S. Synchro Mesh Gearbox, seeking comparison data from a Buick. | ||
| View original record | HS. FROM DA. X523 DA2/Y24.6.31. J. & S. SYNCHRO MESH GEARBOX. G.523. C.5310. You will probably have noticed that we are asking for a movement at the top of the gear lever of 3.S a side. We did not… | ||
| 02-page186 | Letter and proposal from General Motors about a synchromesh transmission. | ||
| View original record | R. Sg. Hs. X52I. BY6/G.8.7.31. RE: SYNCHRO MESH TRANSMISSION. We attach hereto copy of a further letter we have received on the above matter from Mr. Constantine based on the instructions of Mr.… | ||
| 02-page187 | Letter from a consulting engineer regarding royalty terms for a Synchro Mesh Transmission patent. | ||
| View original record | W.W.CONSTANTINE. Consulting Engineer. 111, Grosvenor Road, London S.W.1. Tel: Victoria 3537-3538. 7th, July 1931. Messrs. Rolls-Royce Ltd., Derby. (For the attention of R.W. Harvey-Bailey Esq.,) Dear… | ||
| 02-page188 | Concluding page of a letter from W.W. Constantine requesting remarks. | ||
| View original record | -2- Cont'd. I shall be interested to have your remarks in due course. Yours faithfully, (Signed) W.W. Constantine. WWC/KG. 286. | ||
| 02-page189 | Revisions to the epicyclic 3rd speed gearbox, friction clutch, and brake. | ||
| View original record | Ry. from De. c. Sg. He. X523. De2/M9.7.31. EPICYCLIC 3RD SPEED GEARBOX REVISED. FRICTION CLUTCH AND BRAKE. We send herewith N.Schs. 3306/T. showing respectively the temporary adaptation of the present… | ||
| 02-page190 | Sticking and concentricity of cones in a synchro-mesh gearbox, referencing Buick's lapping instructions. | ||
| View original record | R:C. FROM DA/HY. C. to HS. BY. DA. SYNCHRO MESH GEARBOX. STICKING OF CONES. DA/HDY1/19.9.31. X523 X7310 X5310 We telegraphed to you yesterday to the effect that Buicks lay much stress on the bedding… | ||
| 02-page191 | Technical note on gear sleeve alignment and a proposal to use a bronze stirrup to reduce friction. | ||
| View original record | (2) It will be seen that the inner sleeve with the teeth at each end must also be true on its outside dia. The alignment of the 1st. motion shaft will clearly have some effect on the functioning of… | ||
| 02-page192 | Road test report on a 25 HP Synchro Mesh Gearbox, comparing its performance to a Buick and noting an issue with noise at idle. | ||
| View original record | To H. From Hs. c. to Sg. Sbr. c. to R. Da. c. to By. YS-3. Hs.5/WJ.22.9.31. X.523. X.5310. 25 HP. SYNCHRO MESH GEARBOX. We have had this gearbox fitted to a 25 HP. car on the road today. The synchro… | ||
| 02-page193 | Success and implementation of a new synchromesh gearbox with a silent third gear. | ||
| View original record | HS. BY.R. C. to ST. WOR. C. to DA. HIC. X523 R/1428.A.31. CAR GEARBOXES - SYNCRO MESH. WITH SILENT 3rd. (New arrangement) X.523 X.7316 X.5310 X.4027 This seems to be an unqualified success, and we… | ||
| 02-page194 | Adoption of synchro mesh and proposing a new epicyclic gear design. | ||
| View original record | COPY. Y52'3 HS. } FROM R. DA/HDY. } R1/YB.10.31. X523 Sent off 28.10.31. X5310 X7310 C. to Sg. WOR. BY. C. to MT. CLAREMONT. CHANGE GEARS. We are up against a loss of RR. dignity in adopting the… | ||
| 02-page195 | Gearbox scheme involving synchronised brakes, an epicyclic unit, and a jaw clutch drive. | ||
| View original record | (2) This scheme embodies: (1) R's idea of synchronised brakes applied to epicyclic. (2) R's idea of using bevel or other accelerating unit to reverse drive, thus avoiding any extra wheels etc for… | ||
| 02-page196 | The synchro-mesh gearbox, discussing the reverse shaft and forward bearing design. | ||
| View original record | X523 c. Hs. BY.3/G.6.11.31. SYNCHRO MESH GEAR BOX. The reverse shaft is made of 5% case hardened nickel, case hardened on both bearing surfaces, and therefore the trouble is not due to a soft shaft… | ||
| 02-page197 | Request to arrange test runs on competitor cars to evaluate their silent gearboxes. | ||
| View original record | W/S. Hn. from Ha/Gry. X523. Ha/Gry.5/KT.16.12.31. We wish to try several cars that are reputed to have silent gearboxes. We wonder whether you could arrange, preferably through friends of ours, runs… | ||
| 02-page198 | Competitive necessity of developing a synchromesh gearbox for all forward gears. | ||
| View original record | To R. from Eg. Copy to Mr. S. re Synchromesh Gearbox. You are doubtless aware of the competition in connection with easy change gearboxes, one of the chief illustrations of which is the Wilson box as… | ||