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).
Instructions from Mr. Royce regarding thermostats, thermometers, pressure feed pumps, and speedometers.
Identifier | ExFiles\Box 78\1\ scan0149 | |
Date | 1st May 1919 | |
Contd. -2- X.3565 The louvres must be arranged to be worked by a hand control preferably operated from the dash, and should also be made if possible, so as to be adapted afterwards for operation by a thermostat. The thermostat 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. (3) PRESSURE FEED PUMP. X.3454. X.3538 - For the first cars to be made the pressure feed pump should be similar to that fitted to chassis 7 CA which is the old well-tested model, but with the capacity altered by the addition of a suitable plug in the head so that the pumping pressure is put up to 3 lbs. These pumps should be fitted until the new pump is available, which has been already instructed from West WitteringHenry Royce's home town. (4) SPEEDOMETER AND SPEEDOMETERDRIVE - X.1809 The sample brought to West WitteringHenry Royce's home town of the Elliott speedometer is very bulky and heavy. Since, however, Elliotts appear to be the only British instruments available and suitable, Mr. Royce instructs that we... Contd. | ||