US Patent: 912,384
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| Automatic Engine Stop Valve
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Patentee:
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| James L. Kimball (exact or similar names) - Salem, Essex County, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 08, 1907 |
| Granted: |
Feb. 16, 1909 |
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Joel Havens
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Description: |
| Abstract:
This invention relates to automatic engine-stop valves, and has for its object to provide a balanced puppet-valve comprising two connected disks movable toward and from two valve-seats which are provided in the partition wall within the valve-case, with a piston which is connected to the upper most disk and which moves in a cylinder on the valve-case, the pressure area of the piston being such that when added to the pressure areas of the disks the valve will be balanced and will fall by gravity and close upon its seats, and when subtracted there- from, the valve will be unbalanced and will be lifted from its seat by the pressure of steam within the case; and also to provide the cylinder in which the piston moves with a vent leading to the atmosphere and with a port leading to the valve-case, and means for controlling said vent and port, whereby the vent may be opened and the port closed to unbalance the valve, in order that it may be lifted from its seats by the steam pressure within the case, or the vent may be closed and the port opened to balance the valve, permitting it to fall by gravity.
Claim:
In an automatic engine-stop valve, a valve-case, a partition wall therein having 35s two aligned valve-seats, a cylinder on said case having a vent and also having a port communicating with the interior of the valve-case, means for opening and closing said vent, and means for opening and closing said port, a puppet-valve in said case comprising two connected disks movable connected to said valve, made smaller in diameter than the disks thereof, which moves in said cylinder, the pressure area of which, when added to the pressure areas of the disks balances the valve, permitting it to fall by gravity upon its seats, and when subtracted therefrom unbalances the valve, permitting it to be lifted from its seats by the pressure within the case |
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