US Patent: 568,692
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Wrench
Wrench For Turning Pipes or Other Round Objects
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Patentee:
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| Montagu D. Martindale (exact or similar names) - London, England |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Jul. 15, 1896 |
| Granted: |
Sep. 29, 1896 |
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Patent Pictures:
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Montagu D. Martindale patent September 29, 1896 |
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Stan Schulz
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Description: |
| A roller in a swinging frame is given a wedging action by "spiral curvature" of a portion of the opening.
The principle is applied to a variety of fixed and adjustable jaw forms. |
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