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).
Description of a mechanism for indicating pressure variations, detailing the construction of the diaphragm, cooling system, and electrical connections.
| Identifier | ExFiles\Box 165\4\ img041 | |
| Date | 28th March 1928 guessed | |
| combustion chamber are accurately indicated and recorded. The construction is simple and sturdy and is particularly designed so that the diaphragm 18 is subjected to a minimum of strain. By employing a relatively rigid arm 32, the amplitude of movement of the mechanical parts of the indicator is small although entirely sufficient for accurate indications when employing the sensitive indicating apparatus herein disclosed. To prevent overheating of the diaphragm we preferably bore the plug 10 at 56 and connected the bore with a source of compressed air. The cooling air strikes the diaphragm 18 and is discharged upwardly through the bore 16. We have provided the casing 22 with covers 58 and 60 so that the rheostats may be enclosed. Through the cover 58 may extend the terminal 61 electrically connected to the upper end of the upper rheostat; the terminal 62 electrically connected to the frame 22 and the terminal 64 electrically connected to the bottom of the lower rheostat. Obviously this mechanism may be employed for indicating pressure variations occurring in various types of apparatus and in so far as this invention relates to an improvement in telemeters it obviously is of use wherever telemeters may be employed. -3- | ||