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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129,874
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Jul. 23, 1872
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Improvement in toys
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Samuel N. Trump |
Rossville, MD |
The toy is a scroll saw, possibly sold by Edward A. Hollis, and definitely sold by the Trump Bros. of Wilmington, Delaware—the patent date is reported on such a saw. The example has cast in the frame, "Trump Bros. Wilmington Delaware Pat'd July 23,1872 and reissued Nov 6, 1877". |
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162,588
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Apr. 27, 1875
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Improvement in scroll-sawing machines
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Charles N. Trump |
Wilmington, DE |
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Improvement in scroll-sawing machines
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Samuel N. Trump |
Wilmington, DE |
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184,445
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Nov. 14, 1876
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Improvement in drill-chucks
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Charles N. Trump |
Wilmington, DE |
The inventors contrast their design to Albert D. Goodell's US Patent No.141,345, simply by virtue of having three jaws and circular symmetry about the spindle axis, obviating any need for adjustment. An advertisement in the 1880-01-03 American Machinist features this chuck with patent date clearly visible. |
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Improvement in drill-chucks
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Samuel N. Trump |
Wilmington, DE |
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185,270
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Dec. 12, 1876
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Improvement in scroll-sawing machines
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Charles N. Trump |
Wilmington, DE |
An example of this saw, labeled Trump & Frederick, was seen on eBay. |
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Improvement in scroll-sawing machines
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Samuel N. Trump |
Wilmington, DE |
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Improvement in scroll-sawing machines
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Christian Frederick |
Wilmington, DE |
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