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 notes outlining modifications for end plates, a silencer jacket, and a swan neck pipe support, including a sketch and instructions from Mr. Royce.
| Identifier | ExFiles\Box 48\4\ Scan150 | |
| Date | 30th December 1920 | |
| R.R. 584A (150 T) S.H. 159, 11-8-20; G.{Mr Griffiths - Chief Accountant / Mr Gnapp} 9800 Contd. -3- E5/G30.12.20. The only other points on this scheme refer to the end plates; these should be made from sheet metal press-ings, not forgings, and for the purpose of providing a feature for bolting up to the pipes a flanged piece should be welded in as shewn in the sketch - Weld (4½) N. SCHEME 684. Mr. Royce does not wish to use a drop forging for the silencer jacket as he thinks that it is both heavy and expensive. He would like you to scheme a sheet metal attachment somewhat on the lines of the one indicated on the blue print of N. scheme 684 herewith. This consists of a flat sheet metal bracket bolted in between two angle plate pressings which are rivetted or spot welded to the silencer as shewn. The bracket is attached to the cross member by means of two bolts passing through tubes which are brazed into the cross memeber at the time that the brazing operation is performed for the end flange on the cross member. The bracket is shewn schemed normal to the centre of the cross member bend. The final position of the silencer is not necessarily the one shewn. With regard to the support for the swan neck pipe, this should be a simple sheet metal bracket with a base formed by bending the metal to one side, and attached by two bolts one vertically above the other, as indicated by fig. A.N. 684. The attachment to the exhaust pipe should be formed of two little sheet metal angle plates place back to back, as shewn and spot welded in four places to the pipe. In this case the bracket is not bolted between the angle, plates, but on one side of them. Referring again to the general scheme, it is noticed that the pump, position of the rear axle allows for a certain gap to the frame intended for rubber b uffers. On this account it will probably be necessary to push the Contd. | ||