US Patent: 501,644
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| Corrugating Tool
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Patentee:
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| James Blumer (exact or similar names) - Brooklyn, NY |
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Patent Dates:
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| Applied: |
Apr. 10, 1893 |
| Granted: |
Jul. 18, 1893 |
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Patent Pictures:
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James Blumer patent July 18, 1893 |
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Stan Schulz
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Description: |
| "Geared" rollers to form crimps in sheet metal pipe, etc. The rollers are advanced by ratchet action of a pawl, and the distance between the rollers can be adjusted.
Two forms of the tool are shown in period advertising; a stand-alone tool and a second form integrated with a snips or shears (viz. pat. no. 570,218). In early 1894, Peck, Stow & Wilcox was marketing the tool as "BLUMER'S HAND CRIMPER" with a cam lever to separate the rollers, and a fixed "gauge." The tool also appears in a 1917 hardware wholesale catalog among other tinsmith's tools. |
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