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US Patent: 437,941
Steam-engine
Patentee:
Frank A. Shoemaker - Buffalo, NY

USPTO Classifications:
74/44, 91/349, 91/354

Tool Categories:
propulsion and energy : steam engines

Assignees:
Frank A. Shoemaker - Buffalo, NY
Joseph W. Dennis - Buffalo, NY

Manufacturer:
Not known to have been produced

Witnesses:
Carl F. Geyer
Frederick C. Geyer

Patent Dates:
Applied: Mar. 06, 1890
Granted: Oct. 07, 1890

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for J. W. Dennis
Description:
"This invention relates to that class of reciprocating steam-engines which are provided with two single-acting pistons secured together and moving in cylinders arranged in line with each other."

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