US Patent: 93,534
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| Improvement in mortising-chisel
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Patentee:
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| Carl Hinz (exact or similar names) - San Francisco, CA |
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Patent Dates:
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| Granted: |
Aug. 10, 1869 |
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Jeff Joslin
Vintage Machinery entry for Carl Hinz
Vintage Machinery entry for Rowley & Hermance Co.
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Description: |
| "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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