US Patent: 2,113,087
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| Manually Operated Pressure Tool
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Patentee:
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| John Jensen (exact or similar names) - Rockford, Winnebago County, IL |
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Patent Dates:
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| Applied: |
Apr. 10, 1937 |
| Granted: |
Apr. 05, 1938 |
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Joel Havens
"Vintage Machinery" entry for Roper Whitney, Inc.
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Description: |
| "The invention relates to manually manipulable pressure tools such as splicing tools for wire, sheet metal shears, punches, and the like." It provides a recirculating ball mechanism to create "free-running antifriction gearing capable of extremely large force multiplication." |
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