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).
Fixing of vertical suction tubes and the inclusion of a fuse for a pump.
| Identifier | ExFiles\Box 27a\2\ Scan260 | |
| Date | 7th October 1933 | |
| (14) With regard to the fixing of the vertical suction tubes in the centre casting, it is arranged that Messrs. S.U. will follow the method they find suits them best, which is by pressing the tube in from above after it has been expanded at the top end by a preliminary operation, and the pressing tool is to have an overlapping feature which will enable the upperend of the tube to stop above the surface of the boss in the casting and so form a raised valve seat. Some further provisionmay be required to carry the pressure of the tool for planishing the valve seat and this might take the form of a second expanded feature in the tube put on in the preliminary operation which would act as a shoulder. (15) With regard to the question of including a fuse for each pump, it was agreed that there were good reasons why this fuse should be incorporated in the lid{A. J. Lidsey} covering the contact breaker. In the first place the fuse can be more easily removed and inspected particularly on the pump which faces in towards the centre of the car, and in the second place it results in the minimum interference with the design of the pump and its production. A design is in hand at RR. for a revised lid{A. J. Lidsey} containing a fuse on these lines. It is proposed to use a fuse which is interchangeable with the one normally in use on the dynamo field on the RR. distribution board and spare fuses will be carried of this rating in the lid{A. J. Lidsey} of the RR. distribution board. It is proposed that the terminal connection for the conductor on to the moulded lid{A. J. Lidsey} shall be of a semi permanent nature, possibly taking the form of a bakelite covered screwed ferrule threaded on to the conductor, and this will have an advantage not previously mentioned, that when the lid{A. J. Lidsey} is removed and allowed to drop on to the dashboard of the chassis there will be less liability of dead shorting the ignition fuse should the ignition switch be on than with the present arrangement | ||