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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671,039
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Apr. 02, 1901
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Screw Driver
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George E. Wood |
Southington, CT |
A early Patent for George E. Wood involving the use of steel in the handle to protect the from blows of a hammer. Not sure but on the patent description its for screwdriver &c., Chisel? He does mention its uses for chisel as well. Also note the pin is driven through the upper part of the handle, engaging the 'winged' section. Examples marked Stanley, Hurwood Pat.Apr.02,01. Made in USA, on the blade. Samples are pinned through the bolster at the lower end of the handle, no "wings" are present, it appears to look like all the other early Hurwood screw drivers. |
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4,021,970
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May. 10, 1977
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Wide abrasive belt tension and oscillation assembly
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Witold C. Przygocki |
Southfield, MI |
"An abrasive belt tension and oscillating assembly for use with wide belts resulting in the use of long and heavy rolls and mounting frames requiring heavy duty supports for the ends of the pivotally mounted tension roll and further requiring stabilizers in the form of dual guide pins with rack and gear construction for uniform movement of the idle or tension roll assembly and uniform tension on the belt regardless of the width and position of the belt." |