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).
Letter from John Marston Ltd. confirming specifications for experimental Phantom III and other radiator cores.
| Identifier | ExFiles\Box 150\3\ scan0085 | |
| Date | 12th December 1936 | |
| 1280 IMPERIAL CHEMICAL INDUSTRIES LIMITED. FROM JOHN MARSTON LIMITED, WOLVERHAMPTON. TELEPHONE: 21481 (4 LINES) TELEGRAMS: SUNBEAM, WOLVERHAMPTON. CODES: A.B.C. 5TH & 6TH EDITIONS; BENTLEY'S. Reply to be addressed to John Marston Limited for the attention of JLC/IEE. 12th December, 1936. STEADMAN. Noted R...f/STD Messrs. Rolls-Royce Ltd., Derby. For the attention of Mr. Steadman. Dear Sirs, Confirming our telephone conversation of this morning. The first experimental Phantom III Core to be delivered was made with .005" waterways and .0035" centres, both of tinned strip. The second had .005" tinned waterways and plain copper centres, not exceeding .003" thick (Drg.No.88288). The 65m/m Core EX.2477 was of similar material. The first 52m/m Core to Drawing EB.1798, was made with .005" tinned waterways. The centres being of plain copper .00325" thick. In the second core of this size the centres (of plain copper) did not exceed .003" in thickness. Yours faithfully, John Coltman | ||