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
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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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239,703
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Apr. 05, 1881
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Hand circular saw
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Albert A. Bennett |
Harveysburg, OH |
"The object of my invention is to provide a circular saw which shall be in the nature of a hand-tool for cutting thin lumber; and it consists in a plate having near its middle and at its lower edge a small circular saw loosely revolving in a bearing, and having in front and rear of the same, and slightly projecting below the lower edge of the blade, a gear-wheel which, as the plate is steadily pushed over the surface of the board, bites the latter, and through a train of gear-wheels imparts a rotary motion to the saw, which, as the plate advances, cuts a kerf through the board with a circular sweep..." |