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 Shock Damper Valve Body for Dubonnet Suspension.
| Identifier | ExFiles\Box 154\1\ scan0237 | |
| Date | 4th January 1935 | |
| HS {Lord Ernest Hives - Chair} 1682 SCALE o {Mr Oldham} /| SCREW .500" 16 T.P.I R.H. 1.000 ± 5 ACROSS FLATS DIA .328 ± 1 DIA .250 ± 1 .200 .175 ± 5 3 EQUALLY SPACED RADIAL HOLES DIA .156" .250" 4 EQUALLY SPACED RADIAL HOLES - DIA - 0.125" .430 DIA 14 MM 16 MM SCREW 16 MM DIA 1.25 MM PITCH. .550 ± 5 .450 ± 10 .850 ± 5 1.070 ± 5 1.600 ± 10 1.950 ± 10 SEATING FOR .3125" DIA BALL - TO BE FORMED BY LIGHTLY TAPPING BALL ON SEAT. MATERIAL - S/N No. OFF - 2. SHOCK DAMPER VALVE BODY FOR DUBONNET SUSPENSION. ROLLS-ROYCE, LTD PRINT ROOM 4 JAN 1935 DERBY 688 31/1/35 | ||