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).
Suggested method for operating a four-wheel servo-assisted braking system.
| Identifier | WestWitteringFiles\K\December1923\ Scan54 | |
| Date | 12th July 1923 | |
| R.R. 403A (40 H) (SL 42 12-7-23). J.H. D.{John DeLooze - Company Secretary} EXPERIMENTAL REPORT. Expl. No. 9940 1559 REF: Hs{Lord Ernest Hives - Chair}3/L07 .12.23. SUGGESTED METHOD OF OPERATING ALL FOUR WHEEL BRAKES BY SERVO ACTION WITH THE TOTAL FOOT PRESSURE AVAILABLE FOR BRAKING WHEN SERVO IS NOT WORKING OR WORKING IN REVERSE DIRECTION. The action of the linkage will be seen from the diagram. In practice the compensating links would be replaced by the usual differential distributors and their velocity ratios may be so arranged that the ratio of braking with servo in action to braking in reverse direction is as required. When servo is not in action or acting in the reverse direction it may be so arranged that the total foot pressure, P, is available for braking. Referring to diagram, it will be seen that when braking in reverse direction, after the initial play in servo is taken up, the movement at 'G' is the same as at 'P'. This action then is similar to that of the Hispano system and it can be seen that the effect of the servo running in reverse direction in no way tends to diminish the effort at 'G'. The sketch is purely diagrammatic and the servo shown is of the simplest form. The linkage can be so proportioned to suit requirements. ACL. | ||