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 The Light Production Co. Ltd. regarding the receipt of pistons, gudgeon pins, and a blueprint, and the despatch of standard channel scraper rings.
| Identifier | ExFiles\Box 86\2\ scan0112 | |
| Date | 26th October 1933 | |
| X23le THE LIGHT PRODUCTION Co. LTD. PROPRIETORS OF THE LONDON PISTON RING CO. LTD. ENGINEERS CHAIRMAN & MANAGING DIRECTOR: M.{Mr Moon / Mr Moore} V.{VIENNA} ROBERTS. DIRECTORS: E.{Mr Elliott - Chief Engineer} E.{Mr Elliott - Chief Engineer} GEORGE. W. THIRTLE. 60/66, ROCHESTER ROW, WESTMINSTER, S.W.1. ENG. TELEPHONE:— VICTORIA 0671. 8 LINES. OUR REF. CHB/IR WORKS & GOODS ADDRESS: 61/67, GREENCOAT PLACE, WESTMINSTER, S.W.1. All communications to be addressed to the Company. ON ADMIRALTY, WAR OFFICE & AIR MINISTRY LISTS. TELEGRAMS: INLAND NAPOLEONIC, SOWEST, LONDON. FOREIGN NAPOLEONIC, LONDON. CODES: A.B.C. 5TH. EDITION. YOUR REF. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}6/KT. 26th October 1933. Messrs. Rolls Royce Ltd., Experimental Dept., DERBY. Dear Sirs, We are obliged by your communication of the 25th and acknowledge receipt of the two pistons mentioned therein and also the gudgeon pins, for which we thank you. We are also extremely interested to have the blue print which sets out the leading dimensions of six pistons, as determined by you in the condition as received. In connection with scraper rings, we are pleased to advise you that a supply of these are being despatched to you by post to-night as promised, these rings being of the type known as our standard channel scraper rings, the characteristic being that the bearing area of the lands is 60% of the total width of the ring as compared with 40% in the case of the wide channel rings previously fitted. You will observe that this ratio approximates extremely closely to the ratio you yourselves use for the scraper ring fitted to your own pistons. We have considered carefully the piston returned which has completed the endurance test, and would confirm our opinion that the absolute major axis need not have been disturbed. We feel sure the | ||