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).
Patent summary for a braking mechanism that can be operated both mechanically and hydraulically.
| Identifier | ExFiles\Box 147\4\ scan0084 | |
| Date | 25th September 1940 guessed | |
| No. Patentee. Title. 524,972 J.H.Pratt.G.E.Manley and A.H.G.Girling. Braking mechanism. A girling type brake is adapted to be operated mechanically and hydraulically and greater braking effect is applied if both braking means are applied together, thus when wear takes place, if the hydraulic means do not supply sufficient braking force the manual means may be used to supplement their force. --------------------- | ||