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).
The design and construction of an exhaust silencer snout and cut-out flange, with sketches.
| Identifier | ExFiles\Box 45\3\ Scan121 | |
| Date | 18th May 1920 | |
| To Hs.{Lord Ernest Hives - Chair} Da{Bernard Day - Chassis Design}, and By.{R.W. Bailey - Chief Engineer} -3- E1/G18.5.20. Contd. The assembled silencer snout should be secured to the exhaust pipe by welding in the usual manner round the end, and should be additionally secured top and bottom by welding, through holes in the cylindrical portion of the snout on to the exhaust pipe inside. The thickness of the sheet metal pressings should be about .080". Mr. Royce remarked that he would rather use brazing metal for both the silencer snout and the cut-out flange at once in preference to steel castings, as the brazing metal castings could be made to a reasonable thickness. EXHAUST CUT-OUT FLANGE AND EXHAUST PIPE BETWEEN SILENCERS (40/50 HP) X.3340. X.4072. The possibilities of sheet metal construction for this piece was gone into to some extent by Mr. Royce, and several designs were sketched, one of which is shewn below. Mr. Royce also suggested cutting the pipe, and bending up two flaps of the pipe material itself, and then welding in end pieces to form a rectangular tube on the pipe which would carry a pressed steel flange. It was decided, however, in the end that the simplest policy to follow would be to adopt a drop forged flange of the present design, but without the saddle piece on the forging lightened out wherever possible, and wleded round the lower edge to the exhaust pipe. This piece is illustrated as follows:- Contd. | ||