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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93,534
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Aug. 10, 1869
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Improvement in mortising-chisel
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Carl Hinz |
San Francisco, CA |
"The object of my invention is to provide an improved chisel, to be used for cutting mortises designed for receiving pulleys, or other pieces of mechanism, which require a shallow mortise cut around the main one for the purpose of receiving the flange, or other device, by which the pulleys are attached to the timber; and consists of a mortising-chisel, having a shorter adjustable one above it, and placed far enough from it to give the desired width of shallow mortise. By adjusting the shorter chisel, any desired depth or width of shallow mortise can be given, the whole being performed at one operation, with great accuracy and celerity."
This chisel was seen in both the 1882 and 1890 Rowley & Hermance catalogs: "Patent Frame Mortise chisel. We here present an entirely new and novel Chisel for Mortising in Sash Pulleys. ... Price, $10.00". Rowley & Hermance was a manufacturer who also sold complementary products from smaller makers. We have not seen a surviving example of this mortising chisel, but we have seen a surviving blind-slat wiring machine from the same inventor, and bearing that inventor's name. Thus, the most likely scenario is that Carl Hinz manufactured his patent mortising chisel and blind-slating wireng machines, which were resold by Rowley & Hermance Co. But we list Rowley & Hermance as a "manufacturer" also because we are uncertain who actually manufactured these items. |
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207,181
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Aug. 20, 1878
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Improvement in blind-wiring machines
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Carl Hinz |
San Francisco, CA |
The inventor subsequently patented an improved blind wiring machine in patent 239,782, and then manufactured that one for a time before selling it to Rowley & Hermance. We have not been able to confirm that Hinz also manufactured this earlier design, but it seems likely. |
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239,782
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Apr. 05, 1881
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Blind-wiring machines
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Carl Hinz |
Philadelphia, PA |
Seen in an 1890 Rowley & Hermance catalog, labeled as "The Boss Double Blind Wirer". The catalog illustration shows the Rowley & Hermance name on the machine, but the only surviving example we have seen bears the name "Carl Hinz". At this point our best guess is that Hinz manufactured these items, but other scenarios are also plausible. |