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 placement of thermostats and the requirement for thermometers on production vehicles.
| Identifier | ExFiles\Box 39\4\ Scan011 | |
| Date | 1st May 1919 | |
| Contd. -2- E6/G1.5.19. when fitted in a convenient position for operating the louvres might require its water connections to be made in a manner which would short-circuit the radiator; this would be of no consequence. For designs still further ahead it is proposed to carry the thermostat actually in the top tank of the radiator. (2) THERMOMETER - Mr. Royce instructs that a thermometer must be fitted on production cars until a thermostat is standardised for operating the radiator louvres. Sample thermometers now being tested, supplied by the Cambridge Scientific Instrument Co. should be examined to see if they work by vapour pressure or the expansion of liquid. This thermometer must be fitted flush with the instrument board. R.R.C. 255 A (100 T) (S.P. 575. 16-4-19) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 2554. | ||