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US Patent: 514,054
Engine
Patentees:
La Motte C. Atwood (exact or similar names) - St. Louis, MO
Nathan W. Perkins, Jr. (exact or similar names) - St. Louis, MO

USPTO Classifications:
91/173, 92/138

Tool Categories:
propulsion and energy : steam apparatus : rotary steam engines

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
A. M. Ebersole
Benjn A. Knight

Patent Dates:
Applied: Apr. 14, 1893
Granted: Feb. 06, 1894

Patent Pictures: [ 1 | 2 | 3 ]
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Description:
Abstract:

Our invention relates to an engine in which there is a piston and a cylinder acting alternately on the crank of a shaft, to produce a rotary movement of the shaft; the piston acting to move the crank shaft a quarter revolution, the cylinder then acting to move the crank the next quarter of a revolution, the piston then acting to move the crank another quarter of its revolution, and the cylinder then acting to move the crank the next and :o last quarter of its revolution.

Claim:

In an engine, the combination of a houising having fixed inwardly projecting hollow pistons provided with ports, a movable cylinder fitting over said pistons and provided with ports, a barrel carried by said cylinder io and between which and said cylinder ports are located, a movable piston located within said barrel, and a crank shaft upon which said movable piston is mounted; substantially as set forth. x5 2. In an engine, the combination of a housing having fixed inwardly projecting hollow pistons provided with ports, a movable cylinder fitting over said pistons and provided with ports, a barrel carried by said cylinder and between which and said cylinder ports are located, a movable piston located within said barrel, and a crank shaft upon which said movable piston is mounted; said barrel and movable piston having exhaust passages and said movable piston being made hollow.

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