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).
Letter from the National Physical Laboratory inquiring about the progress of a silencer design.
| Identifier | ExFiles\Box 152\3\ scan0113 | |
| Date | 1st February 1933 | |
| Ref: HS{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer}14/KT 442. Aero. Dept. The National Physical Laboratory Teddington, Mdx. 1/2/33 W. A.{Mr Adams} Robotham, Esq. Rolls-Royce, Ltd Derby Dear Mr Robotham. You may remember our meeting at the last motor Show at Olympia when you took over from me a silencer design which you were going to try out. I am writing now to enquire how things are progressing, and I should be very much obliged if you could let me know. Believe me I have no desire to appear impatient, and I am writing only because the Provisional Patent I took out for the design expires at the end of this month (Feby) Yours faithfully D.L. Ellis. | ||