US Patent: 878,925
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| Reversible Explosive Compound-Engine.
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Patentee:
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| Ellis J. Woolf (exact or similar names) - Minneapolis, Hennepin County, MN |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Feb. 11, 1908 |
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Joel Havens
"Vintage Machinery" entry for Woolf Valve Gear Co.
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Description: |
| Abstract:
The chief feature of improvement has for its object to provide such an engine with a simple and efficient means for controlling and reversing the same while in motion. A minor feature of improvement enables the crank case to be utilized as a condensing and muffling chamber for the exhaust.
Claim:
An explosive compound engine provided with a reversing valve controlling the low pressure admission ports, and 'which valve is movable, at will, for shifting the admission to opposite sides of the low pressure piston, for reversing the engine. |
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