US Patent: 673,859
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| Reversing Valve Gear
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Patentee:
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| Harry C. Clay (exact or similar names) - Columbus, Bartholomew County, IN |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jul. 21, 1900 |
| Granted: |
May 14, 1901 |
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Joel Havens
"Vintage Machinery" entry for Reeves & Co.
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Description: |
| Abstract:
The economical working of a steam-engine requires that the point of cut-off be the same at both ends of the cylinder and that the port opening also be the same at both ends. In a reversing-engine it is further desirable that this uniformity extend to both the over and under motions.
Claim:
In a reversing valve-gear, the combination with the crank-shaft, of an eccentric, an eccentric-arm mounted thereon, a reversing lever pivoted at a point between the axis of the engine and a line normal thereto through the shaft, a controlling link, of the same length as the reversing-lever, pivoted at one end to the end of the reversing lever and at the other end to the eccentric-arm, a link pivoted at one end to the eccentric-arm at a point between and in line with the eccentric center and the pivot of the controlling-link, intermediate connections between the link and the valve, and means for holding the reversing-lever in any desired position. |
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