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).
Further report on the Humfrey-Sandberg clutch by Professor L. N. G. Filon.
| Identifier | WestWitteringFiles\R\2October1927-November-1927\ 99 | |
| Date | 4th August 1924 guessed | |
| CONFIDENTIAL. COPY FURTHER REPORT ON THE HUMFREY-SANDBERG CLUTCH by Professor L. N. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} Filon, D.Sc.,F.R.S., Professor of Applied Mathematics, University College, London. (For clearness, the numbering of the figures, though not that of the sections, follows on from the earlier report.) 1. Proposed new application of the clutch. The present further report deals with the action of the clutch in the following applications. (A) For clutching any required secondary shaft to a (coaxial) driving shaft, while allowing the driven gear to "freewheel" when revolving more rapidly than the driving shaft. (B) For providing a "slipping drive" when the clutch is prevented by a stop from being pushed home, the torque of the drive being adjustable by controlling the stop. 2. Action of the clutch when fully engaged. Referring to the notation of my previous report, we consider here a clutch consisting only of one half (AVBDUC) of the surfaces shown in fig. 1 of that report. The bearing surfaces may then be described as single conoids, the complete surfaces (EWFDUC of the figure referred to) being described as biconoids. The clutch with single conoids will then work in one sense only. If, as indicated in Patent Specification 239,894 p.5, ll. 24-53, the conoids are shaped to the exact envelope of a roller inclined to the shaft axis at an angle α and revolved about this shaft axis, then, when the clutch is fully engaged, the inner and outer members of the clutch are | ||