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).
To the Technical Committee discussing alternative materials and designs for clutches.
| Identifier | ExFiles\Box 74\2\ scan0101 | |
| Date | 6th February 1912 | |
| Copy. N2/B9212. Le CanadelHenry Royce's French residence. 6th February 1912. Members of the Technical Committee. Re Clutches. 1st. Ascertain if the cotton fabric is better than leather for engaging, and also if it will stand a higher temperature. [Handwritten note next to a bracket enclosing the following paragraph: This need not now be tried.] 2nd. We might try the string lined clutch proposed some time ago. The cord should be say 1/8" diameter and should be sunk in grooves. It should be taken through holes and exposed for a length of 1" and kept on the inside for a length of 1/2". The holes should be staggered. 3rd. A better scheme than the above, and one which should be tried, is to use tape 3/4" x 3/16" woven on a bias, thus - [Drawing of a curved tape] to suit the curvature of the cone. It should be sunk in grooves, and as much as possible should be laid on the cone. The ends of the tape should be fastened off by means of a clip or split pin, thus - over [Handwritten note on left margin: X356] | ||