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).
Ideas for the manufacture and design of connecting rods.
| Identifier | WestWitteringFiles\B\February1918\ Scan7 | |
| Date | 26th February 1918 | |
| To Mr. Moon from R.{Sir Henry Royce} c. to EH. c. to Wor.{Arthur Wormald - General Works Manager} c. to CJ. c. to Mr Hall ORIGINAL RECEIVED 28 FEB 1918 X.2059 Re - Connecting Rods. Your suggestion of a square boss near the big end bolts, resulted in our studying the manufacture of the connecting rods, and the following ideas were the outcome of a discussion between Mr. Elliott, Mr. Hives, and myself. It occurred to us that the big end should rest upon a face which was part of a cylinder and could rock with its axis, at right angles to the crank axis and the connecting rod, so that the little end would always bed down on its boss, but the big end would control the squareness of the connecting rod forging. The little end in its turn should rest on a facing which had a spherical seating. This same idea passed through my mind some little time ago and we do not know whether it has been transmitted to you and already in use in connection with the rods. The cramping of the big end could be of an ordinary pattern. The cramping of the little end should be equalised and there should be on the little end projections forged that would afterwards be milled off. There are many ways of equalising the cramps at the little end. The simplest would appear to be to have two levers between the bolts, sufficiently far apart to permit of the boring tools passing through the little end; While so cramped on, a reversible jig, we propose, that the rod shall be bored at each end and faced, all the surplus metal coming off the facing during EH/PS | ||