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).
The testing of valve springs from various manufacturers.
| Identifier | ExFiles\Box 80\3\ scan0251 | |
| Date | 26th January 1914 | |
| R.R. 235 A (150 H) (V.V. 430. 26.1.14) G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 0109. WOR{Arthur Wormald - General Works Manager}/SM1/M18214. X74 R.{Sir Henry Royce} Valve springs. In January, 1913, you suggested that we obtained a number of valve springs from various makers, and Order Office obtained for us valve springs from the following firms. 286 Empire Co. 369 Lion Spring Co. 312 Midland Spring Co. 74 Poldi. 3/4 Skinner & Co. 313 Terry & Sons. 3/6 Turton & Sons. 280 West Bromwich Co. Of these the only set that have been tested are those of Poldi, and Mr Hives is now of the opinion that the valve spring problem has now matured to such a point that it is unnecessary to test these springs, as to test each set thoroughly it would take about four months to complete, and he thinks you would consider the time was wasted in continuing these tests. He has been led to this opinion by several remarks of yours, for instance, on 11/2/13 you said:- "I do not think much of the trial places for springs". In April you remarked with reference to the | ||