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).
Proposal for a simplified shaft and coupling design using a plain tube with tapered, pinned ends.
| Identifier | ExFiles\Box 77\1\ scan0121 | |
| Date | 22th July 1919 | |
| Contd. To DA.{Bernard Day - Chassis Design} from R.{Sir Henry Royce} R1/G22.7.19. larger diameter. It appears necessary to put the loose ends on this shaft so as to permit of carborising the teeth of the coupling. I suggest that we use a plain tube with ends tapered on the outside, the couplings hydraulically pressed on and cross pinned with taper pins driven tightly in, Assuming that the torque will be taken by the friction only, and the pins will be merely additional safety devices, this will make the tube of the simplest possible construction. To begin with, we should avoid using a spring, but would make a spherical seating at each end, and allow only a moderate amount of end play, say, .05" which is a dimension which could probably be worked to quite easily. It is absolutely imperative that greater simplicity of construction, straight forward machine work, and a reduction in fitters time to a minimum must be worked for. R.{Sir Henry Royce} | ||