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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122,609
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Jan. 09, 1872
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Improvements in Carpenters' Plane
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Henry A. Holt |
Wilton, NH |
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159,514
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Feb. 09, 1875
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Improvement in wood-molding machines
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Henry A. Holt |
Wilton, NH |
This patent was improved in patent 265,604. |
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170,732
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Dec. 07, 1875
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Improvement in spoke-sockets
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Henry A. Holt |
Wilton, NH |
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265,604
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Oct. 10, 1882
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Cutter-carrier for woodworking machines
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Henry A. Holt |
Wilton, NH |
Improvement to patent 159,514. |
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322,935
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Jul. 28, 1885
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Planing-machine
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Henry A. Holt |
Wilton, NH |
Improvements to patents 159,514 and 265,604. |
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698,705
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Apr. 29, 1902
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Tonguing and grooving machine
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Henry A. Holt |
Wilton, NH |
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1,133,437
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Mar. 30, 1915
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Door-latch
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Henry A. Holt |
Wilton, NH |
The innovation here is a doorknob that can retract the bolt (latch) by pressure on the knob, not just by turning the knob, to make it easier to open the door when one's hands are full. |