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 loads required to operate shutters on various types of radiators, all measured at the Calorstat Spindle.
| Identifier | ExFiles\Box 87\1\ scan0209 | |
| Date | 16th January 1936 | |
| -4- (SHEET 2) Hs{Lord Ernest Hives - Chair}/Std.22/KW.16.1.36. Loads Required to operated shutters on various Radiators (all at Calorstat Spindle) (1) 3-B-IV. Load to open fully + 6.5 lbs. Load to close fully + 7.2 lbs. (2) 1st Standard Radiator. Load to open fully - .25 lb. Load to close fully 11.8 lbs. Load to start closing 4.0 lbs. (3) 2nd Standard Radiator. Load to open fully 3.5 lbs. Load to close fully 11.5 lbs. Load to start closing 2.2 lbs. (4) 3rd Standard Radiator. Load to open fully 2.0 lbs. Load to close fully 9.3 lbs. Load to start closing 5.75 lbs. Mean of Production Radiators. Load to open fully 2.0 lbs. Load to close fully 10.8 lbs. Load to start closing 4.0 lbs. Hs{Lord Ernest Hives - Chair}/C.S.Steadman. | ||