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 scheme for bonnet clips featuring spring fingers and notes on materials and implementation.
| Identifier | WestWitteringFiles\Q\January1927-March1927\ 16 | |
| Date | 10th January 1927 | |
| TO: BA/EV{Ivan Evernden - coachwork} (Struck through) HS.{Lord Ernest Hives - Chair} FROM R.{Sir Henry Royce} (At Le CanadelHenry Royce's French residence.) RE/M6.1.27. DESPATCHED FROM WW. ON 10.1.27. C. to BJ. WOR.{Arthur Wormald - General Works Manager} BY.{R.W. Bailey - Chief Engineer} BONNET CLIPS. X1140 X8760 X5260 (Struck through) Another scheme of the above is to have a spring finger inside the bonnet, carried by bonnet. This reaches through the bonnet. As near bonnet as possible. Stout stainless steel. The end of spring stands forward .1 is pushed back .050 From nickel sq. rod Plain of stud enter or size larger thread to avoid weakness in bending Or stainless stay-brite - one piece. Contrary to my earlier opinion a stop on here may be an advantage. Stem A.{Mr Adams} is strong enough. When bonnet lowered into place these can come into contact. The spring is definitely set up a suitable amount, say 5 lbs. effective even if only pressed back .050". Recess in pad face for spring finger at back of bonnet. This scheme would have made our original 20HP. design work satisfactorily. The hook on the barrel should be made higher up at once. (W) STAMPED TEXT: ORIGINAL STAMPED TEXT: RECEIVED JAN | ||