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 specifications for a resistance wire for a heating coil from supplier Belling & Co.
| Identifier | ExFiles\Box 36\3\ scan 113 | |
| Date | 27th July 1917 guessed | |
| Mr. Clark. COPY X.3039 Re Resistance Wire for Heating Coil up to 900°C required. enclosed. From experience we should prefer a wire .03 dia. at least, since it is less liable to brun out. Can Messrs Belling & Co. supply a wire of this dia. which would absorb 250 to 350 watts when 200 volts is supplied to the ends, with maximum length of coil of 30 ft. We have had such a wire in the past. H.C.H. | ||