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).
Communication about required clearances for glass tube holders and rubber support rings within a body casting to prevent strain.
| Identifier | ExFiles\Box 44\4\ Scan063 | |
| Date | 1st May 1929 | |
| Messrs. Rolls-Royce, Ltd., Date 1.5.29. Page 2 it appears necessary for the body casting to be cleared away more drastically, to ensure that the top and bottom glass tube holders are actually afloat in the rubber support rings, and that no strains are imposed upon the glass tube via these holders, owing to their fouling anywhere in the body. Furthermore, it appears highly desirable that the capillary tubes, both top and bottom, should have sufficient free tube to prevent any possibility of their imposing a strain on the glass tube itself. We think that if you will examine the replace- ment gauge which we have sent you to-night by parcel post, (with which is enclosed your advice-note WG{Mr Gill - Financial Director}/F 27963, which was sent to us with the gauge, so that you can locate it), you will see the method which we have employed to prevent a recurrence in manufacture of the fault which may have existed in a small percentage of these gauges. The whole object of the rubber support rings is defeated if the glass tube holders are not free both from fouls on the casting and strains from either of the capillary tubes. We are also in receipt of your letter of the | ||