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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146,632
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Jan. 20, 1874
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Improvement in lath-machines
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James Allen |
Allegan, MI |
In the 1889 lawsuit in a District Court (part of the federal court system), Densmore v. Three Rivers Mfg. Co., describes a contract made 1874-03-21 between J. Allen and J. Kelsey, with the Three Rivers Mfg. Co. where the latter licensed from the former the right to manufacture the lath machine of this patent; the complainant, Densmore (believed to be Edwin Densmore of Grand Rapids), was also a licensee of the patent. The basis was a payment of $30 royalty on each machine sold. Three Rivers Mfg. Co. also agreed to supply lath mills to Allen and Kelsey at $150 each. The complainant alleged that Three Rivers Mfg. Co. had not fulfilled its part of the contract and therefore the contract was voided. The court demurred with that conclusion and also said that they did not have jurisdiction to decide whether or not the terms of the agreement had been breached; such a conclusion was the jurisdiction of a state court. |
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347,331
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Aug. 17, 1886
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Machine for cutting veneers
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Edwin Densmore |
Grand Rapids, MI |
This machine was made at Michigan Iron Works, operated by Wm. T. Powers & Son. Judging by how prominently the machine figured in their advertisements, it was quite successful for them. |
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446,585
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Feb. 17, 1891
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Veneer-cutting machine
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Edwin Densmore |
Coronado, CA |
"In the manufacture of fruit-boxes from veneer it is necessary to score them, so as to enable the sheets to be bent into the required form, thus preventing breaking or uneven bending at the corners. The object of my invention is to provide an automatically-adjustable scoring-knife which will adjust itself to the diminishing periphery of the log, and, further, to provide for an even depth of cut." |