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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484,069
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Oct. 11, 1892
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Steam-engine
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Max Ulrich |
Northampton, MA |
"My invention is embodied in an oscillating-cylinder steam-engine, and relates, mainly, to the construction of the valve mechanism and ports by which steam is conveyed to and exhausted from the engine. The engine is double-acting, and the cylinder is pivoted substantially at the middle of its length upon trunnions that support it and receive the thrust or reaction of the steam that impels the piston, and the valve-action depends upon the oscillation of the cylinder, by which port-openings in a valve-piece carried by and oscillating with the cylinder are caused to alternately register with live-steam and exhaust ports in a stationary steam-chest..." |