US Patent: RE8,433
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| Valve-Gear for Steam-Engines
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Patentee:
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| Joseph W. Thompson (exact or similar names) - Salem, Columbiana County, OH |
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Patent Dates:
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| Applied: |
Sep. 14, 1878 |
| Granted: |
Sep. 24, 1878 |
| Reissue Information: |
| Reissue of 162,715 (Apr. 27, 1875) |
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Patent Pictures:
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Joel Havens
"Vintage Machinery" entry for Buckeye Engine Co.
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Description: |
| Abstract:
The object of my invention, which relates to governors of the class secured upon and rotating with the main shaft of the engine and hence partaking of the same angular velocity, is to provide, in a governor of simple construction and adaptability to the operation of regulating the movements of a cut-off valve, means for approximating perfect isochronal regulation as far as may be practicable under existing conditions as to load, pressure, and speed, and of readily adjusting the degree of isochronism in consonance with changes of such conditions, when desired. To these ends my improvements consist in the combination of a supporting case or disk adapted to be secured upon the driving-shaft of the engine, arms pivoted to said case at one end and carrying a weight or ball at the other, and springs acting in reverse direction to the centrifugal force of the weights, and connected to the pivoted weight-arms between the weights and the pivots of the arms. My improvements further consist in the combination, with the pivoted weight-arms and their centripetally-acting springs, of a device for varying and adjusting the tension of the springs.
Claim:
The combination, m a steam-engine governor, of a supporting-case, arms pivoted thereto and carrying weights upon their outer ends, and springs whose tension acts in reverse direction to the centrifugal force of the weights throughout the traverse of their arms, said springs being connected to the weight-arms between their pivots and weights. |
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