US Patent: 7,353
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Rotary Steam Valve
Improvement in Oscillating Valves of Steam Engines
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Patentee:
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| Thomas C. Theaker (exact or similar names) - Mansfield, Richland County, OH |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
May 07, 1850 |
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Joel Havens
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Description: |
| Abstract:
The nature of my invention and improvement consists in forming side passages or steamways leading from the usual steamways n the oscillating valves and communicating with recesses formed in the valve-chambers, for the purpose of letting steam into said last-named recesses, in order to produce a pressure of steam against the side of the valve opposite to that on which the steam is admitted, ;o as to produce a counterpressure on the oscillating valves for the purpose of reducing the friction on the same, as described. The general wear of the surface of the valve is rectified by occasional longitudinal adjustment, he valve-cylinder being made somewhat conical and furnished with a setscrew for that purpose.
Claim:
The openings in the pipes for an engine of, say, ten-inch bore I make about seven inches by one-half or five-eighths of an inch, and the chambers for the valves about three or three also cast in them by means of cores.
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