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).
Instructions (page 2) detailing the construction and design of a coil or transformer component.
| Identifier | ExFiles\Box 61b\4\ scan0120 | |
| Date | 8th December 1924 | |
| RR 238 (150 BKS.) (DB{Donald Bastow - Suspensions} 461-8-12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. (2) To____________________ Order No._______________ Customer's No.__________ .....................19___ the fact that there is a large air gap between this sheath and the core, it is at low tension. It is made at each end in comb fashion apparently to avoid eddy currents and possibly to help radiate the heat generated in the primary. The windings are wound unconventionally on to core the H.T end of the secondary coming out next to the core itself; a large porcelain insulator forms a pedestal for the coil and winding when in position in the sheet tin case. Signed contd This Sheet must be filed on completion of the work. | ||