US Patent: 639,640
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Wrench
Improvements in Pipe-Wrenches
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Patentee:
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| Morgan Williams (exact or similar names) - Aspen, CO |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 27, 1899 |
| Granted: |
Dec. 19, 1899 |
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Patent Pictures:
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Morgan Williams patent Dec. 19, 1899 |
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Stan Schulz
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Description: |
| The unique feature is the adjusting frame within the "keyhole" shaped frame at the end of the outer jaw. The structure limits the distance the jaws can open. The gripping teeth run diagonally.
Cited as a reference in patent no. 2,444,135. |
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