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, operation, and fixing of a valve in a water circulation system.
| Identifier | WestWitteringFiles\T\January1929-February1929\ Scan167 | |
| Date | 20th February 1929 | |
| FROM E.{Mr Elliott - Chief Engineer} C. to HS.{Lord Ernest Hives - Chair} re. VALVE IN WATER CIRCULATION. X7150 Please find herewith blueprint LeC. 2675. shewing a scheme for the above. The valve in this design has been coupled directly to the longitudinal shutter operating shaft. This shaft moves through 80° and the valve 70°. The leakage point on the valve spindle has been arranged as high as possible to be above the normal water level, but as there will frequently be a tendency for the water to leak from this point as when the valve is closed, the spindle has been provided with a solid collar held up to its face by a spring so as to form a gland. This gland face could be coned if desired as on German water pumps. It may be considered necessary for more than one reason to provide a rotational adjustment of the butterfly valve relative to its lever, in which case we should propose to leave enough head room for a clipped on lever and screw driver slot. The fixing shewn on LeC.2675. is supposed to be fairly heavy riveting done in a fly press with a chisel shaped tool rotated to various angles. We have seen this done on the Watford magneto for riveting the end spindles into the armature end plate. If this is not considered good we propose a washer and rivet. The small sump below the bottom bearing of the spindle will of course become filled with water, and in the event of the car being drained and left in severe weather will freeze. We suppose that the expansion occasioned thereby would be relieved by this small piece of ice crushing upwards and lifting the valve against the pressure of the spring. E.{Mr Elliott - Chief Engineer} | ||