If you find a patent number or patent date by this manufacturer that is not on this
list, please contact the Site Historian.
Key to Links for Patent Information
USPTO = U.S. Patent Office .
Images of the actual patent can be viewed on the U.S. Patent Office web site but
a special TIFF viewer must be installed with your browser in order properly work.
More information on how to configure your computer to view these patents can be
found at TIFF image Viewers
for Patent Images.
DATAMP = Directory of American Tool And
Machinery Patents . A sister site to VintageMachinery.org with information
on patents related to machinery and tools. A much easier user interface than the
USPTO's for finding information on machinery patents.
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371,480
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Oct. 11, 1887
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Belt-shifter
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Frank A. Shoemaker |
Buffalo, NY |
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409,457
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Aug. 20, 1889
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Steam-engine
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Joseph W. Dennis |
Buffalo, NY |
"This invention relates to that class of steam-engines which contain two or more cylinders and connected pistons moving therein, and in which the steam is admitted to a chamber formed at the junction of the cylinders and admitted from said intermediate chamber to the outer ends of the cylinders and exhausted therefrom by a rotary valve. The object of our invention is to produce a simple engine of this kind which is composed of comparatively few parts, which can be constructed at small expense, and which is easily kept in order." |
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Steam-engine
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Frank A. Shoemaker |
Buffalo, NY |
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424,183
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Mar. 25, 1890
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Reversing-valve for steam-engines
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Joseph W. Dennis |
Buffalo, NY |
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Reversing-valve for steam-engines
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Frank A. Shoemaker |
Buffalo, NY |
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437,941
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Oct. 07, 1890
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Steam-engine
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Frank A. Shoemaker |
Buffalo, NY |
"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." |