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).
Description of a wheel hub assembly, detailing how a nut and disc secure the components in place.
| Identifier | ExFiles\Box 147\3\ scan0150 | |
| Date | 2nd July 1938 guessed | |
| shaped member having a central hole through which the end of the hub sheal C projects. The nut G has an external annular projection G¹ between which and the threaded portion of the nut the edge of the hub shell fits. The annular projection G¹ has a chamfered portion G² which bears against a turned in portion H¹ of the disc H.{Arthur M. Hanbury - Head Complaints} The outer part of disc H has a turned out portion H² which fits against the wheel rim A.{Mr Adams} As the disc H is shaped as a flattened cone the pressure of the extension G¹ on the part H¹ will cause the disc to be flattened when the nut is tightened and thus urge the part H² against the rim A and hold the disc in position. In the arrangement shown in Figure 1 this will be aided by the outward thrust produced by the chamfered portion G² on the nut G.{Mr Griffiths - Chief Accountant / Mr Gnapp} In the arrangement shown in Figure 2 the construc- tion is the same except that the extension G¹ of nut G is not chamfered and the disc H has no turned in portion. To keep the disc in position temporarily when the nut G is removed clips J are provided preferably | ||