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 flaw in the Phantom III and Wraith horn button and proposing an alternative scheme.
| Identifier | ExFiles\Box 166\9\ img111 | |
| Date | 19th June 1937 | |
| Rm.{William Robotham - Chief Engineer} F.J.H [Handwritten] [Strikethrough]c. Ey. Da.{Bernard Day - Chassis Design} EV.{Ivan Evernden - coachwork}[/Strikethrough] [Strikethrough]By/RD. Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer}[/Strikethrough] Any Comments? [Handwritten] Rm{William Robotham - Chief Engineer} [Handwritten Signature] 606b. [Handwritten] E.2/HP.19.6.37. w.a. [Handwritten] Phantom III and Wraith Horn Button. Replying to your memo Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer}6/AP.4.6.37, I think this scheme Rm.{William Robotham - Chief Engineer}389 offers an alternative method of operation but that the square section rubber rings stretched over the four internal lips of the button would in time perish and fall away. I am having an alternative scheme made with moulded rubber and possibly using one instead of [Strikethrough]four screws[/Strikethrough]. locating [Handwritten] E.{Mr Elliott - Chief Engineer} [Signature] | ||