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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652,674
|
Jun. 26, 1900
|
Combined Vise and Drill
|
Philip J. Harrah |
Bloomfield, IN |
|
|
732,523
|
Jun. 30, 1903
|
Lifting-jack
|
William H. Cox |
Virden, IL |
This type of jack was used for installing fences and for other purposes around the farm. An example closely matches the patent drawing and is marked with the patent date but no maker's name. The Bloomfield Mfg. Co. made very similar jacks but we are not completely certain that they were the manufacturer of this particular design. |