US Patent: 3,520,527
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Quick-change vise
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Patentee:
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Henry Persson (exact or similar names) - Bloomfield, NJ |
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Patent Dates:
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Applied: |
Jul. 30, 1969 |
Granted: |
Jul. 14, 1970 |
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Carl Matthews "Vintage Machinery" entry for Wahlstrom Float-Lock Product Co. "Vintage Machinery" entry for American Machine & Foundry Co.
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Description: |
Improvements to the original quick-release Float-Lock vise of patent 2,724,295. The main improvement is a simplified shaft clamp, and there is a safety stop to prevent the half-nut from disengaging when the clamp is tightened. |
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