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 discussing the design of a winding mechanism for car clocks, suggesting a bevel gear arrangement.
| Identifier | ExFiles\Box 15\7\ Scan026 | |
| Date | 20th July 1927 | |
| ELMSTEADHenry Royce's home in West Wittering WEST WITTERINGHenry Royce's home town CHICHESTER. 20th. JULY 1927. c. to BJ. Hs.{Lord Ernest Hives - Chair} Messrs. North & Sons, Whippendale Rd., Watford. FOR THE ATTENTION OF MR. KIRBY. Dear Sirs, RE CLOCKS FOR RR. CARS. GROUPED ARRGT: OR OTHERWISE. X.4662b X.8530 Replying to your letter on the above subject, I would like to point out that the object of our suggestion of the 10º was to get the winder handle into a position sufficient-ly far back for convenience. I think however this will be unnecessary with your new suggestion of adding another gear to reduce the stesses in the winder. We assume you mean to fit a steel spur pinion into a spur gear on to the winder shaft. On this pinion shaft will be one of a pair of bevel wheels, the other wheel of the pair being on the windershaft. To make a really good job of this scheme a pair of proper bevels should be used, though the weight is considerably reduced on the teeth by this arrgt. Also I should favour one of the pinion bearings being in the plate that carries the spring barrel. The other bearing would be in the casting that carries the winder shaft, or some such equivalent arrgt. in which the parts between the stresses are carried on the same piece. I send you a sketch of the arrgt. here suggested. The whole winding arrgt. would be like a glorified keyless watch. I trust you will be able to put the work in hand, and let us have a model by the 8th. Aug. The dial should be white, silvered, or cream enamelled as instructed from Derby. I am very sorry to hear Mr. North is not well, and hope the sea voyage will do him much good. If you are in difficulty with regard to this work I shall be in London next Monday and Tuesday and should be pleased to see you at the Hotel Russell. Yours faithfully, ROY{Sir Henry Royce} RR. LTD. R.{Sir Henry Royce} | ||