From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Quotation letter from Crofts (Engineers) Ltd. for a horizontal open type variable speed gear.
| Identifier | ExFiles\Box 119\1\ scan0213 | |
| Date | 23th June 1939 | |
| 1924 TELEGRAMS: "CROFTERS, BRADFORD." CONTRACTORS TO THE BRITISH AND FOREIGN GOVERNMENTS. TELEPHONE NO. 4901 (5 LINES). CODES A.B.C. 5TH EDITION BENTLEY'S COMPLETE PHRASE CODE. ENGINEERING, LIEBERS MARCONI. Crofts (Engineers) Ltd, Makers of Power Transmitting Machinery & Appliances General Engineers & Contractors Iron, Steel & Brass Founders Thornbury, Bradford, England. "CROFTS" (REGISTERED TRADE MARK) All sales and other contracts are made subject to the conditions on the back hereof. When replying please quote our reference. S3/ME/195. 23rd June, 1939. Messrs. Rolls-Royce Ltd., Derby. Dear Sirs, Bump Test File Ref. Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale}8/MH.{M. Huckerby} We thank you for your enquiry of the 19th inst., and have carefully noted your remarks. We are putting forward a gear with a ratio of 5/1, and this will enable any speed from 500/100 R.P.M. to be obtained on the final shaft. We indicate below the approximate speed at which the gears should run, and if you will let us have details of the existing V rope drives, we can then determine if these can be used again. Our price for:- 1. "Crofts" 30" horizontal open type variable speed gear, ratio 5/1, fitted with ball bearings throughout. Constant shaft speed 250 R.P.M. variable shaft speeds 540/108 R.P.M., capable of transmitting 40 H.P. at max. speed of variable speed shaft, with handwheel control. £140. 0. 0. If the above gear is fitted with transomes to carry motor - £16. 2. 6. extra. "CROFTS" STANDARD POWER TRANSMISSION APPLIANCES. GUARANTEED DELIVERY FROM STOCK. SIDEBAR TEXT: LONDON: 34, NORFOLK STREET, STRAND, W.C.2. 'PHONE: TEMPLE BAR 6077. BIRMINGHAM: DAIMLER HOUSE, 33, PARADISE STREET. 'PHONE: B'HAM MIDLAND 2412. MANCHESTER, 3: 4, CANNON STREET. 'PHONE: BLACKFRIARS 1302. GLASGOW: 73, ROBERTSON STREET. 'PHONE: CENTRAL 1196. DUBLIN C.2: 10, NASSAU STREET. 'PHONES: 62381 62382 ALSO AT LIVERPOOL, SHEFFIELD, NEWCASTLE, NOTTINGHAM, LEICESTER, CARDIFF, BRISTOL, PLYMOUTH, CAMBORNE, BELFAST. AND AT PARIS, THE HAGUE, BOMBAY, JOHANNESBURG, SYDNEY, MELBOURNE, PERTH, WELLINGTON, SINGAPORE, ETC. | ||