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 testing and modification of two types of motor-car heaters, one American and one English.
| Identifier | WestWitteringFiles\D\February1920\ Scan18 | |
| Date | 12th February 1920 | |
| To R.{Sir Henry Royce} from Hs.{Lord Ernest Hives - Chair} c. to CJ. c. to EN. c. to E.{Mr Elliott - Chief Engineer} c. to Da.{Bernard Day - Chassis Design} c. to OY. c. to Na.{Mr Nadin} X3924 HEATERS - EXH ORIGINAL. HS{Lord Ernest Hives - Chair}4/LG12.2.20. RE MOTOR-CAR HEATERS. We have tested two types of these Heaters; both of them work from the Exhaust System on the Car. One Heater was supplied to us from America and is made by the "Perfection" Heater & Manufacturing Co. Cleveland - the other is an English make - The Thermorad Heater (Chapman). This was sent to the Works to be fitted to Lord Herbert Scott's Chassis. The Thermorad Heater. The heater itself consists of a cast aluminium rectangular box 22" x 5" x 2 1/2". The hot exhaust gases are fed in at one end and there is an outlet at the other end. Supplied with the Heater is a flap type valve. The fitting for the valve was evidently made to suit our swan neck exhaust pipe. The valve is operated by the Bowden Control from inside the body. We found that with a valve fitted on to the swan neck pipe that we do not get sufficient heat from the exhaust for the heater. We altered it and made an exhaust connection from the 3" pipe leading from the expansion box to the silencer. We found with this arrangement we could get ample heat. Owing to the fact that the exhaust gas supply impinged direct on to a local spot on the top of the heater, the heater was not of an even temperature all over. We made this right by fixing a baffle at the top of the inlet pipe so that the gases could not Contd. | ||