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).
Mr. Royce's proposal and sketch for manufacturing Sylphon tubing in-house.
| Identifier | ExFiles\Box 78\1\ scan0250 | |
| Date | 11th August 1920 | |
| X 3652 To WS. from DA.{Bernard Day - Chassis Design} c. to HS.{Lord Ernest Hives - Chair} So. F.R. [Handwritten] Da{Bernard Day - Chassis Design}5/CB11.8.20. X 3652 RE SYLPHON TUBING. While we were with Mr. Royce yesterday he expressed a wish to attempt to make this type of tubing at the works here. He suggested that it might be done by rollers, and made a rough sketch of what he had in his mind, of which the main points are shown in the sketch attached. As we consider this question of sylphon tubing is rather important because it cannot be obtained in England and it is necessary to buy it from America, we think it would be very desirable if you gave this matter your attention as soon as convenient. [Handwritten notes on sketch] The dia. of these rollers would be chosen so that they can be withdrawn when the corrugations are formed. Rollers may possibly skid along these mandrels to accommodate themselves to the shortening pitch of these corrugations or a series of rollers would be used. large dia rollers Chucks Mandrel Copper tube. | ||