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).
Criticism of the Warnington Horn and the Vibrophone Horn.
| Identifier | ExFiles\Box 59\3\ Scan015 | |
| Date | 26th May 1913 | |
| X1069 Wor{Arthur Wormald - General Works Manager}/SM5/L26513 Re Warnington Horn X. 334 and Vibrophone Horn X.471 file Na{Mr Nadin} Further to our memo Wor{Arthur Wormald - General Works Manager}/SM3/L22513, 26/5/13 we wish to add for your information the following criticism from Mr Haldenby :- "I do not think these horns are worth keeping "and spending time on unless they have been "specially obtained because someone requires "information concerning them. The Vibrophone "horn is a horn with a vibrating diaphragm "similar to the Klaxon but not so powerful. "It is driven by a flexible shaft from a "friction pulley which is brought into "contact with the flywheel by a small thumb "lever and Bowden wire. The flexible shaft "and its fixings are very poor and sure to "give trouble unless fitted in a straight "line so that the shaft does not bend much. The Warnington horn is a similar "horn but is better made, and is operated "by hand by pushing down a knob on the horn "itself. This revolves, through gearing, "a disc containing rollers. The rollers bear "on a steel ball which comes in contact "with the diaphragm." p. Wor.{Arthur Wormald - General Works Manager} | ||