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 issues of gauges, and planned communication with the King-Seeley Corporation.
| Identifier | ExFiles\Box 44\4\ Scan112 | |
| Date | 13th March 1930 | |
| Messrs. Rolls-Royce, Ltd., Date 13.3.30. Page 2 at the same time sufficiently robust to stand over-load and rough handling, then it is possible to dispense with the necessity of a balance air line. We must frankly admit that we have had no experience in the manufacture of this type of gauge, but we have always understood from users, more especially in another country, who have had many years experience, that it was the diaphragm or Bourdon part of the outfit which presented the difficulty when it came to quantities and consistency of recording. Further, we concluded that the pump in these types of gauges was arranged to deliver direct to the tank unit end of the system, to obviate the known trouble of introducing moisture into the air line, or the difficulty of making the pump or valve air-tight against small leaks. We should have thought, therefore, that small leaks in either type of installation would have caused irregularities of readings. We will at once communicate with the King-Seeley Corporation in America, and ask them whether they have any experience of the Bourdon type of unit, but we must admit that at the time of writing, we ourselves have not attempted such a type. The writer will be away for a week or two, but he | ||