US Patent: 1,502,192
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| Wrench and Process of Manufacturing the Same
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Patent Dates:
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| Applied: |
Mar. 01, 1917 |
| Granted: |
Jul. 22, 1924 |
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Patent Pictures:
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John Helwig patent July 22, 1924 |
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Description: |
| The initial application was renewed Oct. 20, 1921.
The slotted frame and "lip" that retains the adjusting screw are "bowed" to allow the movable jaw and adjusting screw to be inserted. The sides of the slot and the "lip" are then pressed into final position. |
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