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).
Options for replacing the standard Klaxon horn, including sourcing from Bosch, Klaxon, or manufacturing in-house.
| Identifier | WestWitteringFiles\U\2January1930-September1930\ Scan258 | |
| Date | 26th August 1930 | |
| FROM DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork} ORIGINAL DA{Bernard Day - Chassis Design}/EV{Ivan Evernden - coachwork}1/M26.8.30. Copy to Copy to re. HORNS. X.11632 X.6031 X.7550 Since the early part of 1929. R.{Sir Henry Royce} and the Exp. Dept. have criticised our standard Klaxon, and efforts have been made to find a suitable horn of English manufacture. The Bosch, but for its country of origin, would have met with our approval. Messrs Klaxon were asked to produce a horn like the Bosch, but in Jan. of this year they apparently had not succeeded, although they had submitted several samples. Since the electric horn is not an accessory, but part of the chassis equipment like the dynamo and switchbox, it might be thought possible for us to make at Derby either a copy of the Bosch horn or one of our own design. Another alternative would be to approach Messrs J.{Mr Johnson W.M.} A.{Mr Adams} Stevens Ltd. the English agents for Bosch specialities with a view to arranging for them to obtain the Bosch horn in an English made case, thus concealing the country of origin. They might have facilities for the complete manufacture or assembly of the horn in this country. The 3rd. course would be for W.W. to approach Messrs Klaxon again and examine the latest sample which they submitted last Jan. with a view to discovering how and where it failed to come up to the Bosch standard. With a view to getting something done we would be glad if London could obtain for us on loan a sample of the best efforts by Messrs Klaxon, and also a sample of the Bosch horn which Derby approve of. We would like R's views on the possibility of our making an electric horn. DA{Bernard Day - Chassis Design}/EV.{Ivan Evernden - coachwork} | ||