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).
The inefficiency of single shutter bonnets and a trial for a new design with shutters at each end.
| Identifier | ExFiles\Box 119\3\ scan0060 | |
| Date | 30th July 1914 | |
| Wor{Arthur Wormald - General Works Manager}/Mcr7/L30714. RE SHUTTERED BONNETS. X.1085 J.{Mr Johnson W.M.} 30-7-14. R.{Sir Henry Royce} E.{Mr Elliott - Chief Engineer} Na.{Mr Nadin} Bonnets having a single shutter on each side were reported on by Mr Hives 11/3/14 and as the tests showed that these were not very efficient Mr Royce suggested on May 3rd that a trial be made with shutters at each end. A Bonnet so constructed was fitted to chassis 58NA{Mr Nadin} and a second one has recently been made to be tested on a car in Derby. We attach herewith Mr Hives report on same. p. Wor.{Arthur Wormald - General Works Manager} Attached:- Wor{Arthur Wormald - General Works Manager}/EH18/L30714. | ||