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 Clear-Hooters Ltd regarding the supply and testing of a 12-volt Black Clear Hooter.
| Identifier | ExFiles\Box 59\3\ Scan027 | |
| Date | 9th February 1922 | |
| X1069 CLEAR-HOOTERS LTD ELECTRIC HOOTERS FOR ALL PURPOSES TELEGRAMS: "CLEAR, BIRMINGHAM" TELEPHONE: MIDLAND 3117 CABLES: A B C 5th Edn BENTLEY'S HOOTERLAND Highgate Square BIRMINGHAM. TRADE MARK. DIRECTORS: W.A. CROSBE. J.H. MILLS. T.S. ROGERS. W.J. SPICER. Your Reference Our Reference WAC/ER. February 9th 1922. Messrs. Rolls Royce Ltd., D E R B Y. Dear Sirs, Our Mr. Hadley has informed us of his visit to you and his interview with Mr. Royce. We thank you for your invitation to send you for test a 12 volt Black Clear Hooter which we shall have pleasure in sending by post next week. Regarding the points, under a continuous bench test of 20,000 hoots of two seconds duration each, no depreciation was observed nor has it been necessary to adjust those on the road which have been under our own observation for some months. As to the the hard vulcanite fibre insulator on the end of the plunger the wear on this is very trifling. We shall be obliged if you will test the Clear Hooter and let us have your report in due course as we are desirous of making a hooter to meet your tests in every way. Yours faithfully, p.p. CLEAR HOOTERS, LIMITED. J H Mills Handwritten notes: Hs{Lord Ernest Hives - Chair} Please return after perusal to Stores & have told horn to pass for receipt Reg 10/2/22 [STAMPED: RECEIVED FEB 10 1922] | ||