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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1,542,826
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Jun. 23, 1925
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Chuck
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Holger Nielsen |
Lawton, MI |
An example is reported, labelled "The "Nielsen", Lawton, Mich., USA. Patented June 23, 1925". |
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1,542,827
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Jun. 23, 1925
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Lathe center
|
Holger Nielsen |
Lawton, MI |
The inventor was part of the Nielsen-Barton Chuck & Tool Co., which was dissolved in 1926; we presume that they manufactured this lathe center. |
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1,606,972
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Nov. 16, 1926
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Chuck
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Holger Nielsen |
Lawton, MI |
"My improved chuck is especially designed by me for use in tapping machines where there has been a very great loss in breakage owing to the taps not being securely held and not properly aligned..." |