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).
Quotation for an air-cooled transformer with an auto transformer regulated primary.
| Identifier | ExFiles\Box 32\4\ Scan029 | |
| Date | 19th November 1920 | |
| MITCHELL'S ELECTRICAL & WIRELESS LTD. 188, Rye, Lane, Peckham. S.E.15. Wd{Mr Wood/Mr Whitehead}/Me5/RJ27.10.20. AWKQ/2/F.{Mr Friese} Messrs. RollsRoyce Ltd., DERBY. November, 19th 1920. QUOTATION for AIR COOLED TRANSFORMER With Auto Transformer regulated Primary. One Auto transformer, for use with testing Transformer, with an output of 3 K.V.A. Primary winding 200 Volts 42 cycles, Secondary 10 - 200 in ten equal steps. Price --- --- --- --- --- --- --- £45. nett. With one testing transformer, output of 3 K.V.A. primary 200 volts secondary 20,000 volts, including necessary oil Price --- --- --- --- --- --- --- £ 80. Delivery 4 to 6 weeks. The above quotation has been made in face of prompt delivery, and we are aware that it is rather larger than enquired for, and is open to acceptance in three days the manufacturers informing us that they cannot promise to make a smaller type under 8 Months. This is subject to the usual guarantee, and labor conditions. (upside down text at bottom) R.R. 285A (100) (T. 189. H.S.) (11-20. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 1200) | ||