US Patent: 627,220 - Air and Gas Engine


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US Patent: 627,220

Air and Gas Engine

Patentee:

Ellis J. Woolf (exact or similar names) - Minneapolis, Hennepin County, MN

USPTO Classifications:

123/162, 123/188.2, 123/41E, 123/41R, 123/429, 123/47R, 123/58.2, 123/68, 123/71R, 60/620, 60/625

Tool Categories:

propulsion and energy : internal combustion engines : gas and gasoline engines

Assignees:

Woolf Valve Gear Co. - Minneapolis, Hennepin County, MN

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Sep. 19, 1898
Granted:	Jun. 20, 1899

Patent Pictures:

USPTO (New site tip)
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Description:

Claim:

A gas-engine having a storage-chamber into which the' charge is compressed during each explosion stroke of the piston, and is held under pressure during each exhaust stroke thereof, and from which said charge is admitted, under pressure, to the explosion-chamber at the completion of said exhaust stroke, in combination with suitable valve mechanism for controlling said action, including an admission-valve to the explosion-chamber operated by the piston, substantially as described.