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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203,877
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May. 21, 1878
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Elevator Boot
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Henry W. Caldwell |
St. Louis, MO |
Abstract:
The object of our invention is to provide an elevator-boot with an adjustable bottom that can be drawn up or down with the pulley in the frame of the boot, and at all times maintain an equal distance between the said bottom and pulley for the elevator-buckets that are attached to the belt to pass through, thereby permitting any amount of grain or other material to be fed into the boot without choking it. The sides of the boot, being of metal, act as guides, and prevent friction of the elevator-belt with the wooden parts of the elevator-leg, thereby avoiding the danger of fire, so often produced when the boot chokes, which causes the belt to slip on the pulley in the boot, and run to one side against the wooden part of the leg, setting it afire.
Claim:
An adjustable elevator-boot provided with an adjustable bottom, whereby the bottom of the boot follows up and down with the pulley, and remains at all times at the same distance from the bottom of said pulley. |
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Elevator Boot
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William Watson |
St. Louis, MO |
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