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).
Requesting the procurement of a 3-phase motor, including quotations from two suppliers.
| Identifier | ExFiles\Box 76\2\ scan0090 | |
| Date | 22th July 1927 | |
| Y632 To Hy.{Tom Haldenby - Plant Engineer} from EFC. EFC1/LG22.7.27. 3 PHASE MOTOR FOR SMALL CHARGING PLANT. Will you please obtain for this Dept. a 1 HP. 200-volt 50 cycle 1400 r.p.m. three-phase motor, which will enable us to save testing time by running continuous electrical tests over the weekend. Pulley or slide rails are not required. As I was enquiring for single phase motors in another connection, I took the opportunity of obtaining two quotations which are as follows :- G.E.C. Co.Ltd., Magnet House, Kingsway, London W.C.2. Moor St.{Capt. P. R. Strong} Birmingham "WITTON" STANDARD PROTECTED TYPE THREE PHASE SQUIRREL CAGE INDUCTION MOTORS, each machine fitted with two end shield ball bearings and having standard bare shaft extension. All arranged suitable for service on 200 volts, 50 cycles, 3 phase supply, speed 1400 r.p.m. Type A3A. 1 HP. £8. 10. 0. For service in connection with the above machine we offer :- AIR BREAK STARTING SWITCH comprising switch mounted in sheet iron case, complete with three fuses inserted in the 'running' and cut out in the 'starting' position. Price each non-automatic - £2. 12. 0. Prices quoted are strictly nett and inclusive of delivery f.o.r. Terms nett cash. This tender is subject to conditions of sale 'A' and prices are subject to confirmation or revision at time of acceptance. Husbands, Hart & Warburton Ltd., City Rd. Mills, Derby. We have pleasure in quoting you for One 3 phase 200 volt 50 cycle 1430 r.p.m. 1 HP. S.C.Motor. Price £6. 14. 0. contd :- | ||