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 a discrepancy in an engineering drawing for a special Aerolite piston.
| Identifier | ExFiles\Box 87\2\ scan0191 | |
| Date | 16th June 1936 | |
| Matthews. Is this our order or one of the single cylinder jobs. R.M. TELEPHONE: VICTORIA 0671 (6 LINES). ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY. THE LIGHT PRODUCTION CO. LTD. PROPRIETORS OF THE LONDON PISTON RING CO. LIMITED. CHAIRMAN & MANAGING DIRECTOR: M.V. ROBERTS. DIRECTORS: C.W. BAKER. WM. THIRTLE. ENGINEERS 60/66, ROCHESTER ROW, WESTMINSTER, S.W.1 WORKS AND GOODS ADDRESS: 61/67, GREENCOAT PLACE, WESTMINSTER, S.W.1. ON ADMIRALTY, WAR OFFICE AND AIR MINISTRY LISTS. CODES: A.B.C. 5TH EDITION. TELEGRAMS: INLAND, NAPOLEONIC, SOWEST, LONDON. FOREIGN, NAPOLEONIC, LONDON. OUR REF. CHB/IR YOUR REF. 16th June 1936. Messrs. Rolls Royce Limited, Experimental Dept. DERBY. Dear Sirs, For the attention of W.A.Robotham Esq. In connection with the special Aerolite Piston with the pocket in the crown, which we are making to your drawing No. R.S.201, the angle of the centre line of the cutter to machine the pocket is shown on the drawing to be at 41° to the horizontal, whereas it is actually drawn at 49°. This discrepancy is not of any moment so far as the casting is concerned, and our query therefore, does not indicate any delay. For the purpose of machining this pocket, however, we wish to set out different dimensions to suit the way we propose to tackle the job, and it was in considering this that the above discrepancy was discovered. Whilst it is clear that we should work to dimensions, we venture to ask you to be good enough to verify that it is your intention that the pocket should be machined at the angle dimensioned and not at the angle drawn. | ||