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).
The arrangement and material choices for a Heron servo motor for brakes on a 3-speed gearbox.
| Identifier | Morton\M22\ img231 | |
| Date | 22th November 1922 | |
| To BY.{R.W. Bailey - Chief Engineer} from Da.{Bernard Day - Chassis Design} c. to CJ. c. to Wor.{Arthur Wormald - General Works Manager} c. to Hs.{Lord Ernest Hives - Chair} [Handwritten] FWB SERVO MOTOR- HERON ON 3-SPEED G/BOX 3-SPEED COPY [crossed out] HERON - SERVO MOTOR FOR BRAKES. We send you herewith N.sch.1350., shewing the arrangement of Servo motor on the 3 speed gearbox. Particulars of the latter will follow, and some slight modifications may be required as the design is developed, but what we shew on this scheme is accurate to our most recent instructions. It is suggested that we should try the worm and threaded lever in nickel steel with a high brinnel figure. If this should not prove to be satisfactory it will be necessary to caseharden them. We shew some alternative methods of making the end plate of the clutch, and wish you to choose the one which is most satisfactory from all points of view, that is, from manufacturing, as well as operation. Da.{Bernard Day - Chassis Design} | ||