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 to Messrs. Peto & Radford concerning the thickness of perforated ebonite separator samples.
| Identifier | ExFiles\Box 54\5\ Scan027 | |
| Date | 17th July 1925 | |
| X4655P EFCl/LG. 17th. July 1925. Messrs. Peto & Radford, 50, Grosvenor Gardens, London S.W.1. Dear Sirs, For the attention of Mr. Minchin. Further to EFCl/T. of the 17th.ult., and to our visit of yesterday in both of which the matter of the ebonite separators was discussed, we wish to say that we have carefully repeated the estimate of the relative hole area of the two samples but with unaltered result. We mention this because we think it may weigh with you in deciding upon the type of perforation to be finally adopted. We agree, however, that the thickness of the thinner sample, when the burrs caused by perforation are removed, is reduced to .4 mm. as compared with .5 mm. stated in our letter. Yours faithfully, | ||