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).
Manufacturing methods for a new petrol tank suspension on the 40/50 HP chassis.
| Identifier | WestWitteringFiles\C\June1919\ Scan15 | |
| Date | 1st June 1919 | |
| TO DA.{Bernard Day - Chassis Design} from E.{Mr Elliott - Chief Engineer} (DA{Bernard Day - Chassis Design} is struck through) Copy to CJ. ... RN.{Mr Robinson} ... BY.{R.W. Bailey - Chief Engineer} ... EH. ... EFC. X.3451 ORIGINAL. (Stamp) RECEIVED 1 JUN 1919 (Circular Stamp) El/G30/6/19. 2 EFC. X.3451. RE PETROL TANK SUSPENSION - 40/50 H.P.CHASSIS. I return herewith blueprint Lec.1105 giving further information regarding the pieces for the new petrol tank suspension. An endeavour has been made in this design to use sheet metal pressing work, with a view to lessening the cost of production, and at the same time providing a high class job suitable for manufacturing methods, and one in which the amount of hand work is reduced to the minimum. The flange riveted and sweated to the petrol tank diaphragm has been simplified somewhat. The outside diameter should now be circular 2.600" diameter, and there should be six ½" lightening holes. The edge of the flange should be chamfered as before. This piece should be a sheet metal pressing in mild steel tinned all over. The internal taper is supposed to be finished to size by the dies, and should require no machining. The flange should be secured with tinned steel rivets. The tapered tube extension is intended to be a brass pressing made from a disc of sheet brass. By various operations it should reach a stage illustrated by Fig.1 on Lec.1105. It should next be pushed through a die, so as to elongate and reduce the thickness of the skirt, as seen in Fig.2. The outside diameter of the skirt would be left by this operation, sufficiently accurate to fit into the suspension tube, and form (Contd. | ||