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).
Blueprint for a combined filter and non-return valve for axle gear chassis lubrication.
| Identifier | ExFiles\Box 51\3\ Scan144 | |
| Date | 8th June 1929 | |
| FULL BUMP S.S. REAR THE S.S. REAR AXLE PRESENTS TWO DIFFICULTIES, VIZ. THE BOSS IS TAPPED ONLY B/2 AND THE CLEARANCE WITH HEEL-BOARD AND BATTERY CROSS-MEMBER IS SMALL ON FULL BUMP AS SHEWN. IT MAY BE DESIRABLE TO INCREASE THIS DIMENSION A VERY SMALL AMOUNT TO EN-SURE THAT THE GUN-CONNECTION CLEARS THE AXLE SIDE COVERS. IF NECESSARY THE NUT FOR THE UNIVERSAL JOINT COULD BE EXTENDED UPWARDS A SMALL AMOUNT TO INCLUDE THIS FITTING. IT APPEARS TO US THAT THE PERFORATED PLATE IN THE POSITION SHEWN IS NEC-ESSARY. AS IF ARRANGED AS ON GL. {G. Linnett} 328 THE FELT IS LIABLE TO BE FORCED BY THE PRESSURE TO CLOSE THE VALVE ENTRY HOLE. AS SHEWN ON GL. {G. Linnett} 328 IT APPEARS TO US THAT THE VALVE HAS A VERY LONG STROKE IN THE REAR FITTING AND DOES NOT OPEN A PASSAGE AT ALL IN THE FRONT FITTING. WE SUGGEST HERE THAT THIS CAN BE CORRECTED BY REDESIGNING THE DRILLING. THIS FITTING IS THE SAME ON S.S. REAR AND 20HP FRONT AND REAR AND IS LIKE GC.328. ALSO THE VALVE-SPRING-ETC. ARE THE SAME ON ALL. SUGGESTION FOR BOTH FRONT AND REAR WHEN POSSIBLE. 20HP FRONT 20HP REAR WE HAVE ASSUMED THAT ON THE 20 H.P. THE BOSSES TAPPED RESPECTIVELY .421 AND .375 FRONT AND REAR CANNOT BE ALTERED. WE PRESUME THE HEXAGONS SHEWN AS ON G.L.328 CAN BE OPERATED BY A THIN SPANNER. THE .375 DIA. THREAD MAKES THE VALVE SMALL. WE SUGGEST THAT AT THE FIRST OPPORTUNITY, BOTH FRONT AND REAR SHOULD BE THREADED .500 WHEN A BOX-SPANNER CAN BE USED. THERE IS MUCH MORE ROOM FOR THE VALVE AND FITTINGS AND THE HEIGHT IS SLIGHTLY REDUCED. THE SAME VALVE COULD BE USED AT ONCE ON S.S. FRONT AXLE WHICH IS ALREADY SO THREADED. COMBINED FILTER AND NON-RETURN VALVE AXLE GEAR CHASSIS LUB'N 20 HP AND S.S. SCALE: 1/1 NSCH 2902 ROLLS-ROYCE, LIMITED PRINT ROOM. DERBY | ||