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).
Experiments with cutout contact points.
| Identifier | ExFiles\Box 50\1\ Scan075 | |
| Date | 4th June 1925 | |
| X 4105. 4.6.25. X.4105. CUTOUT CONTACT POINTS EXPERIMENTS. 6-GII. X.4105B. Spring with .150" neck. 7-GII. X.4105D. D type rubbing contacts, and X.4106 auxiliary back contact. GF.68. X.4105C. C type rigid backing and fixed contact point support. 8-GIII. X.4105A. A type rubbing contacts. 9-GIII. 5-EX. 44-PH. X.4105B. Spring with .137" neck. 46-PK. X. 93-NK. 98-NK. X.4105B. Spring with .125" neck. EFC. {E. Fowler Clarke - Electrical Engineer} | ||