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).
Specifications for an electro-pneumatic control system, mounting, cooling, and air receiver.
| Identifier | ExFiles\Box 176\2\ img089 | |
| Date | 22th April 1940 | |
| 23942. Sheet 2. Messrs. B.E.N. Patents Ltd. Control. By electro-pneumatic pressure switch adjusted to cut the motor out of circuit when receiver pressure reaches 150 lbs per square inch, and reconnect to circuit when pressure falls to a predetermined point. Mounting. All compactly mounted on steel base with angle feet ready for bolting down. Cooling. By thermo syphon system with water tank 24" diameter x 48" high, capacity 78 gallons. Equipment. Vee-rope guard, suction filter and silencer and short pipe connections for coupling to receiver. Air Receiver. Vertical welded mild steel receiver 30" diameter x 72" high, capacity 74 gallons, hydraulically tested to 200 lbs per square inch. Constructed in accordance with B.S.S. 487-1937, and conforming to Home Office regulations, complete with pressure gauge, relief valve, wheel valve and drain cock. For the sum of ................ £121. 19. 0d. Nett. Terms :- Nett cash 30 days. In accordance with your quotation reference AGR/JD.{J. Draper - Frames}, dated 19th April, 1940, and letter reference AGR/JD.{J. Draper - Frames}, dated 22nd April, 1940. Please advise date and time of delivery so that necessary arrangements can be made for unloading. JH | ||