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).
Change from Klaxon rotary horns to buzzer-type horns, evaluating Robert Bosch and Sparton models.
| Identifier | ExFiles\Box 59\3\ Scan050 | |
| Date | 3rd March 1929 | |
| X6021. Oy. from Hs.{Lord Ernest Hives - Chair} c. Sg.{Arthur F. Sidgreaves - MD} Wor.{Arthur Wormald - General Works Manager} Hs{Lord Ernest Hives - Chair}1/LG5.3.29. CHASSIS ALTERATION No.7 X.1069. X.7550 X.1163b. X.4278 X.6031. HORN ON CYLINDER. It is probable, in a short time, we shall depart from the Klaxon rotary type of horn to a horn of the buzzer type. The best horn of this type we have found has been the Robert Bosch, and we should be glad if you will let us know what advantages the Sparton S.O.S. De Luxe has over the Robert Bosch. The Sparton horns are made in England and we will get in touch with the makers to see whether they can supply us with a sample - if we cannot obtain this, we will ask you to send us one. We think the idea of mounting the horn on the cylinder head is quite good. HS.{Lord Ernest Hives - Chair} | ||