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).
Standardisation of a contact breaker arm bush, replacing fibre with bakelite micarta.
| Identifier | ExFiles\Box 172\3\ img053 | |
| Date | 13th September 1921 | |
| R R 76a (5 H) (S H 268, 10-9-20) G 2/94 ORIGINAL. COMPLETED 20.10.21. STANDARDISATION OF CHASSIS PARTS. Date 13.9.21. No. 4411 Drawing No. Part List Description of Parts. Bush for contact breaker arm made from bakelite micarta in place of fibre. Origin. To overcome troubles due to shrinking and swelling of the fibre. Experimental Test Report. R-R Springfield have standardised this material. U.S.A. Bosch have standardised it. Watford magneto will use it as soon as possible. Road Test Report. Run 5000 miles on 1.EX Run 3000 miles on 7.CA. Condition of this running was perfect. Signature of Exp. Dept. that above is correct. E.Hives. Weight of Old Part. Cost of Old Part. £ Weight of New Part. Cost of New Part. £ Difference per Car. Difference per Car. £ None. Signature of Mr. De LOOZE that above is correct. D/Rd 21.9.21. SIGNATURES | DATE | REMARKS Mr. JOHNSON | 19.10.21 | Agreed. CJ. Mr. B. Johnson. | 4.10.21 | Agreed. BJ. Mr. ROYCE | 4.10.21 | Agreed FHR Mr. WORMALD | 22.9.21 | Agreed. Wor.{Arthur Wormald - General Works Manager} Mr. BARRINGTON (struck through) Mr. Rowledge. | 19.9.21 | Agreed. Rg.{Mr Rowledge} Mr. DAY | 20.9.21 | Agreed. Da.{Bernard Day - Chassis Design} Mr. BAILEY | 19.9.21 | Agreed. BY.{R.W. Bailey - Chief Engineer} Mr. PLATFORD | 19.9.21 | I take it this means alter present ones. Agreed. E.P. Mr. NORTHEY EWT. for R.R. Inc. | 29.9.21 | Agreed. P.N. A Scrap and replace at all costs, including Chassis already delivered to customers. B Scrap and replace on Chassis in works. C Scrap present stock and replace on all Chassis not yet handed to test. D Use existing stock Alteration effective on future Chassis. Cost of Parts in Works which will be scrapped if commenced on:- Series..........£......... Series..........£......... Storekeeper advised re above: Storekeeper's Signature. | ||