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).
Letter from Ransome & Marles Bearing Co. regarding the test results of a Duplex Double Purpose Bearing.
| Identifier | ExFiles\Box 136\2\ scan0008 | |
| Date | 19th January 1939 | |
| 1153 BALL & ROLLER R&M BEARINGS London Office 17, VICTORIA STREET, WESTMINSTER, S.W.1. Telephone: ABBEY 3875 (2 LINES) Telegrams: OFFIISLUNDA, SOWEST, LONDON Telegraphic Address: "BEARINGS, NEWARK" Telegraphic Code: "BENTLEY'S" Telephone Nos: NEWARK 456-457-458-459 Contractors to H.M. Admiralty, War Office, Air Ministry, Colonial Offices &c. RANSOME & MARLES BEARING CO., LTD., MANUFACTURERS OF BALL & ROLLER BEARINGS NEWARK ON TRENT. Branch Offices: LONDON, BIRMINGHAM, MANCHESTER, LEEDS, NOTTINGHAM AND- Branch Offices: SHEFFIELD, BRISTOL, GLASGOW, NEWCASTLE, DUBLIN, BELFAST. Our Ref. Tech.Dept. FOH/AD. Your Ref. Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}3/MH.{M. Huckerby} [Handwritten note across top right: Hdy{William Hardy} Plan tun] S.H. Grylls, Esq., Messrs. Rolls-Royce, Limited, D E R B Y. 19th January, 1939. My dear Grylls, Many thanks for your letter of the 13th inst., and with regard to the Duplex Double Purpose Bearing running under no load conditions, we have now run 500 hours at 4,000 r.p.m., lubrication being merely by oil bath, and there are absolutely no detrimental signs whatever from this condition of running. If you wish the run to be continued for any longer period, or any other condition to be applied, I shall be glad to institute this on receipt of your instructions, and as mentioned before I hope to get an opportunity of seeing you in the near future at Derby. Kindest regards, Yours sincerely, [Signature: F.O. Hickling] [Handwritten note pointing to the text: This seems to be O.K. Hdy.{William Hardy}] | ||