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).
Production specification for the inspection and testing of a starter main switch.
| Identifier | ExFiles\Box 168a\2\ img262 | |
| Date | 30th November 1936 | |
| To By.{R.W. Bailey - Chief Engineer} from Rm{William Robotham - Chief Engineer}/Wst. c. to RHC{R. H. Coverley - Production Engineer}/EJB. 6139. Rm{William Robotham - Chief Engineer}/Wst.9/AP.30.11.36. Production Specification of Inspection and Test for Starter Main Switch. We are sending you herewith specification No.ELC5/b. for the above switch fitted with a stiffener plate behind the copper contacts to improve the contact pressure. This stiffener plate has been found to more than double the contact pressure and will reduce the volt drop in the starter main circuit considerably. Rm{William Robotham - Chief Engineer}/Wst. | ||