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).
Advertisement for 'The Powerfully Polite' Mellow Tone Clear-Hooter car horns.
| Identifier | ExFiles\Box 166\9\ img156 | |
| Date | 24th February 1937 | |
| ALL BRITISH AND FULLY GUARANTEED. TRADE MARK. The Powerfully Polite MELLOW TONE CLEAR-HOOTER. 6 & 12 Volts. DE LUXE MODEL No. C.H. 150 AS ILLUSTRATED. HIGHLY FINISHED CHROMIUM TRUMPET & FRONT COVER. 30/- Each (U.K.). POPULAR MODEL No. M.{Mr Moon / Mr Moore} 11. AS ILLUSTRATED. ONE FINISH - EBONY BLACK. 21/- Each (U.K.). This Clear Hooter is a wind tone Electric Horn giving a powerful note of musical quality. Clear, resonant, and penetrating. The note is produced on musical principles by the air column in the Trumpet vibrating in sympathy with the electrically operated diaphragm, by this means a pure pleasant tone of very efficient clearing power is obtained with a negligible current consumption. Telegrams: CLEAR, BIRMINGHAM. Telephone: MIDLAND 3117 (2 LINES). CLEAR-HOOTERS. 79-81 LOMBARD STREET, BIRMINGHAM, 12. Printed in England. | ||