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).
Design and cost of bonnet fasteners for B.III & B.50 type cars.
| Identifier | ExFiles\Box 112\3\ scan0054 | |
| Date | 7th November 1938 | |
| 805 abo 405 To By/Ald.{F. Allwood - Experimental Design} from Rm{William Robotham - Chief Engineer}/Std. Rm{William Robotham - Chief Engineer}/Std.7/MH.{M. Huckerby}7.11.38. B.III & B.50 BONNET FASTENERS. The above cars are now fitted with "Rover" type bonnets, i.e.top plates separate from side plates, and one Amal fastener is provided on each side plate to secure the top plate to the side plate. This fastener is approximately central and we have doubts as to whether one fastener will be sufficient for each side. As each fastener costs 3/6d., it is obviously expensive, as well as unsightly, to increase the number to two each side - further we are anxious to reduce and not increase the cost of the fastening equipment. Rm{William Robotham - Chief Engineer}/Std. has suggested and discussed with By/Ald.{F. Allwood - Experimental Design} a form of fastener consisting of a spring which engages with a jaw and which can be released by a press button (see attached pencil sketch) - since the bonnet is spring loaded to open this should be effective and cheap. Will By/Ald.{F. Allwood - Experimental Design} please detail and instruct such a scheme experimentally as soon as possible - two sets should be made. Rm{William Robotham - Chief Engineer}/Std. | ||