US Patent: 640,674 - Explosive Engine


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US Patent: 640,674

Explosive Engine

Patentee:

George W. Lewis (exact or similar names) - Chicago, Cook County, IL

USPTO Classifications:

123/146, 123/179.19, 123/182.1, 123/346, 123/41.67, 123/47R, 123/58.4, 123/65V, 123/65VD, 123/90.1

Tool Categories:

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

Assignees:

J. Thompson & Sons Mfg. Co. - Beloit, Rock County, WI

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Sep. 22, 1898
Granted:	Jan. 02, 1900

Patent Pictures:

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Description:

Original application filed 37 Feb., 1896. Renewed application filed 22 Sept., 1898.

Claim:

The combination with two engine-cylinders, and a single crankshaft provided with ino two cranks standing at the same side of the shaft, of exhaust-valves on both cylinders and means for operating both of said exhaust-valves, comprising a hand-actuated rock-shaft, having two actuating-arms disposed at different angular positions, whereby one or both of said valves may be thrown out of action.