US Patent: 620,926
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| Gas Engine
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Patentee:
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| Louis J. Hirt (exact or similar names) - Brookline, Norfolk County, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Oct. 30, 1897 |
| Granted: |
Mar. 14, 1899 |
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Joel Havens
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Description: |
| Claim:
This invention relates to gas-engines, and has for its object to provide an engine which is capable of operating as a constant pressure engine and of being automatically converted into a variable-pressure engine by diminution of the pressure of the gas employed to run the engine. In accordance with this invention the engine may be started under a constant pressure and run as a constant pressure engine, gas being admitted o and exploded at each stroke of the engine until the engine is running in the desired or proper manner, and when it is so running the supply of gas and air at a reduced pressure may be admitted to the engine-cylinder, and the engine responds to the diminution in the pressure of the gas and automatically converts itself into a variable-pressure engine in which the gas is exploded once for every two complete reciprocations of the piston. |
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