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).
Cross-section drawing of a radiator relief valve with annotations.
| Identifier | ExFiles\Box 156\2\ scan0223 | |
| Date | 21th April 1939 | |
| DRAWING NOT TO BE SCALED Drg: No. 11295/A.{Mr Adams} ALTERATIONS A.{Mr Adams} THREAD ON VALVE HEAD REDUCED IN DIA/R.{Sir Henry Royce} C.S 21/4/39 JOINT WASHER NOTE:- FIXING CENTRE EXACTLY AS SHOWN ON MESSrs ROLLS-ROYCE LTD Drg: No S.C.D. 1178 SCALE FULL SIZE. RADIATOR RELIEF VALVE. OFF PER SET DR'N: G.S APP. CH'K DATE: 17/4/39. WORKING LENGTH + OR - FACE AREA □" MACHINED DIMENSIONS WITHOUT LIMITS TO BE WITHIN ± OF SIZE MATERIAL ⊕ MACHINED ALL OVER ƒ MACHINED G GROUND SUPERSEDES SUPERSEDED BY PART No. 11295/A.{Mr Adams} (Vertical Text): THE BRITISH THERMOSTAT CO. L.T.D. TEDDINGTON WORKS, WINDMILL ROAD, SUNBURY-ON-THAMES, MIDDLESEX. D.{John DeLooze - Company Secretary} R.{Sir Henry Royce} LTD | ||