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 S. Smith & Sons regarding a failed instrument due to the fracture of two trip star teeth.
| Identifier | ExFiles\Box 165\2\ img238 | |
| Date | 22th April 1940 | |
| 105 6065 File. R/A Church Please note Rm{William Robotham - Chief Engineer} elec? CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY S. SMITH & SONS (Motor Accessories) Ltd CRICKLEWOOD WORKS, LONDON, N.W.2 SALES DIRECTOR'S OFFICE Please quote our reference: S.1. 22nd April, 1940 W.A.Robotham, Esq., Rolls-Royce Ltd., D E R B Y. Dear Mr.Robotham, The A.T. folk have now had an opportunity of inspecting the instrument with defective trip which you returned and they find that the failure was due to fracture of two trip star teeth. Since the trouble experienced with this component due to the drop in percentage of tin content they have no record of a single failure, and as several thousand instruments have been supplied with an exactly similar component we are somewhat mystified. There is just one aspect of this matter which may account for the broken teeth, i.e. the fact that the particular instrument under notice was semi-hand manufactured incorporating new features. However, Messrs. A.T's Engineer, Mr.Arrowsmith, hopes to have the pleasure of visiting you on Wednesday next when he will submit the part to you for inspection. Sincerely yours, Charles Whincole | ||