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 Borg & Beck discussing the chemical and physical analysis of a Phantom III clutch pressure plate.
| Identifier | ExFiles\Box 129\3\ scan0030 | |
| Date | 9th January 1936 | |
| Telegrams BORGANBECK, LEAMINGTON SPA. Registered Office BROOK HOUSE, LANSHAM STREET, LONDON, W. 1. Your Ref BORG & BECK COMPANY LTD. MANUFACTURERS OF CLUTCHES. WORKS: Tachbrook Road, LEAMINGTON SPA, Warwickshire 9th January, 1936. Messrs. Rolls-Royce Ltd., DERBY. For the attention of Mr. W. A.{Mr Adams} Robotham. Dear Sirs, You will recall that during a recent visit of your Mr. F.{Mr Friese} Ll. Smith to our Works, a portion of pressure plate as used on your Phantom III chassis was left with us for chemical and physical analyses with a view to comparing same with our standard pressure plate material. We were led to understand that the tensile of the 'Millenite' iron pressure plate was something in the neighbourhood of 25-tons per sq.in. However, from Tensometer tests we have carried out, and as indicated on the enclosed Laboratory Report, you will appreciate that the actual tensile figure is approximately half the above, namely 13-tons per sq.in. We give on our report the chemical analysis of the 'Millenite' as compared with our standard material specification, and also the analysis carried out on the pressure plate recently returned to us in a broken condition. Trusting the above will be of use and interest to you, we are, Yours faithfully, BORG & BECK COMPANY LIMITED. H.{Arthur M. Hanbury - Head Complaints} T. Barker. Telephone LEAMINGTON SPA 1550-1. Directors E.{Mr Elliott - Chief Engineer} B. BOUGHTON. W. EMMOTT. D.{John DeLooze - Company Secretary} T. BROCK. Our Ref TS/HTB/LP.{Mr Lappin} LL Smith - X1110 | ||