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).
Design requirements for a press button switch for a sequence starter's simplified scheme.
| Identifier | WestWitteringFiles\R\October1927-December1927\ Scan158 | |
| Date | 29th December 1927 | |
| EFC. FROM R.{Sir Henry Royce} (At Le CanadelHenry Royce's French residence.) C. to BJ. WOR.{Arthur Wormald - General Works Manager} E: ORIGINAL R1/M29.12.27. REC'D AND DESPATCHED FROM WW. 2. 1. 28. SEQUENCE STARTER. SIMPLIFIED SCHEME. X7655B RECEIVED Since we are interlocking the "main switch" with the "hold out", which latter breaks the teaser circuit when the main switch is in, we shall only need single pole "press button switch" for the 3 control circuits, which can be joined together at any convenient spot or spots after the press button switch. Have we a satisfactory design of such a switch. It must have carbon break, and copper or silver/gold alloy points, as the current will be about 30 amps., and considerable self induction. Let me know what you have that I may judge. R.{Sir Henry Royce} | ||