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 flaws and suggested improvements for a distribution board.
| Identifier | ExFiles\Box 61\2\ scan0306 | |
| Date | 3rd February 1920 | |
| X.2575 Mr. Clark. 3.2.20. X. 3555. R.R. DISTRIBUTION BOARD X.2575. This board seems to have several bad points. It seems that there will be considerable difficulty in fixing the wires to the terminals in the box as the washers are a close fit to the inner sides of the terminals. Perhaps a small tool might be devised that will overcome this. The fuse holders are not satisfactory. The material from which they are made chars if the fuse wire should get very hot and come into contact with it. (This has already happened on the Lucas). The screw holding of the fuse wire would seem to be a nuisance if the fuse goes on the road, as it would mean opening the tool kit to get a screw driver. Would not a small screw with a milled edge be better. There is not any provision made for carrying the fuses in the R.R. board, but this of course would not be any advantage if the screws in the fuse holder are retained as the kit would in any case have to be opened for the screw-driver. The spring clips which hold the fuse holder in position are not satisfactory as they require continually to be squeezed back into position. Another point is that there is no arrangement for taking the weight and pull of the wires off the connections. This may be done outside the | ||