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 concerning inconsistent results from Stanton Repeated Impact Testing Machines due to their mounting on wooden benches.
| Identifier | ExFiles\Box 76\2\ scan0003 | |
| Date | 21th July 1917 | |
| CONTROLLED ESTABLISHMENT,' MUNITIONS OF WAR ACT, 1915. TELEGRAMS: INSTRUMENT, CAMBRIDGE CODES USED: A.B.C. 5TH EDITION & WESTERN UNION. TELEPHONE: CAMBRIDGE, No. 642 (2 LINES) THE CAMBRIDGE SCIENTIFIC INSTRUMENT COMPANY, LIMITED, GOLD MEDAL, LONDON, 1885. GRAND PRIX, PARIS, 1900. TWO GRAND PRIZES, ST.{Capt. P. R. Strong} LOUIS, 1904 TWO GRAND PRIZES, MILAN, 1906. FIVE GRAND PRIZES, LONDON, 1908. HORS CONCOURS, BRUSSELS, 1910. HORS CONCOURS, TURIN, 1911. [STAMPED TEXT: EFC11/T.G/D] [STAMPED TEXT: 23 JUL 1917] [STAMPED TEXT: P] YOUR REF................... CAMBRIDGE, ENGLAND. SOLE MAKERS IN GREAT BRITAIN OF THE DUDDELL OSCILLOGRAPHS. THE CALLENDAR ELECTRIC RECORDER. THE THREAD RECORDER. THE FERY RADIATION PYROMETERS. THE BI-METER CO2 RECORDER. H.{Arthur M. Hanbury - Head Complaints} & M.{Mr Moon / Mr Moore} THERMOMETERS & REGULATORS. IN REPLY PLEASE QUOTE...........MR/MFR [HANDWRITTEN TEXT: X 3128] [HANDWRITTEN TEXT: X.1929] July 21st, 1917. Messrs. Rolls-Royce Limited., Nightingale Road, D E R B Y. [STAMPED TEXT: RECEIVED JUL 23 '17] Dear Sirs, We are in receipt of your letter of the 19th instant, with reference to your Stanton Repeated Impact Testing Machines. We note that at present the machines are only mounted on wooden benches, and we think that this probably explains to a large extent why you have been unable to get comparable results from the three machines. It is impossible to expect comparable results from different machines unless they are mounted on solid concrete foundations. We understand that work done by Professor B. Hopkinson on the Stanton machines has shown that the results are practically unaffected by the rate of the blows, so we do not think that the fact that your three machines are running at different speeds would account for the differences in the results. We may say, however, that we ourselves have had no great experience in the actual working of the machines, and we would therefore suggest that you apply to Dr. Stanton at the National Physical Laboratory, P.T.O. | ||