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).
Internal request to order a protected type shunt wound interpolar motor and accessories from Crypto Electrical Co Ltd.
| Identifier | ExFiles\Box 61\2\ scan0055 | |
| Date | 2nd November 1931 | |
| X75 c.Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} S.213. EJJ2/W2.11.31. Will you please send an order to the Crypto Electrical Co Ltd., Acton Lane, Willesden, LONDON.N.W.10, for the following:- Frame size 253 protected type shunt wound interpolar motor having two end shield type ball bearings and a standard bare shaft extension, capable of developing continuously 8 HP. when running at a speed 1500 r.p.m. suitable for speed increase by shunt control up to 3000 r.p.m. and for speed reduction against constant torque by series control down to 940 r.p.m. PRICE........................ £16. 11. 0. Nett. Extra price for H.O. pattern starter fitted with no volt and overload releases, and series regulator to reduce from 1500 to 940 r.p.m. against constant torque. PRICE........................ £5. 12. 0. Nett. Extra price for one H.O. pattern shunt field regulator to increase from 1500 to 3000 r.p.m. PRICE........................ £2. 10. 0.Nett. Extra price for supplying and fitting an electric interlock between the starter and shunt regulator. PRICE........................ 12. 0.Nett. Delivery - 10 working days from receipt of order. In accordance with quotation of the 28th inst., ref. JRB/HL.7053/31/c. EJJ. | ||