US Patent: 912,372
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| Balanced Slide Valve
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Patentee:
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| William F. Gould (exact or similar names) - Des Moines, Polk County, IA |
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Patent Dates:
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| Applied: |
Feb. 12, 1906 |
| Granted: |
Feb. 16, 1909 |
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Patent Pictures:
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Joel Havens
"Vintage Machinery" entry for Gould Balance Valve Co.
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Description: |
| Abstract:
Steam pressure is so counterbalanced as to permit the slide valve to operate with a minimum of. friction and wear. A further object is to provide a valve of this class in which the parts may be so adjusted as to cause the steam to exert a slight pressure on the valve tending to hold it to its seat to thereby prevent leakage of steam between the valve and seat in case the valve seat should be worn or uneven. A further object is to provide a valve of this class with means whereby communication may be provided between both the cylinder induction ports and the exhaust port at the same time, so that if water of condensation has accumulated in the cylinder, the engine may be operated to discharge same.
Claim:
The combination with a cylinder having exhaust and inlet ports and a raised working face adjacent thereto provided with notches 1n its end portions and a slide valve formed with a passageway designed in one position to communicate between the notches at one side of the valve and the steam inlet with a passageway communicating between the said steam chamber and the lower face of the valve, said passageway designed to rest on top of the working face of the valve seat out of communication with said notches when the valve is in position with said passageway in transverse alinement with said notches. |
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