US Patent: 628,124
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| Gas Engine
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Patentee:
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| William S. Sharpneck (exact or similar names) - Chicago, Cook County, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Sep. 15, 1898 |
| Granted: |
Jul. 04, 1899 |
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Joel Havens
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Description: |
| Claim:
The combination in an engine, of an oscillating cylinder having an exhaust-port near the center of its length with a piston working in said cylinder having a port registering with said exhaust-port at about the center of its stroke, and means for closing the exhaust-port by the motion of the cylinder. |
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