US Patent: 1,410,816
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| Spark Plug Wrench
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Patentee:
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| Willse M. Lawrence (exact or similar names) - Springfield, MA |
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Patent Dates:
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| Applied: |
Jul. 28, 1920 |
| Granted: |
Mar. 28, 1922 |
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Patent Pictures:
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Willse M. Lawrence patent March 28, 1922 with Lawrence-Clark wrench |
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Stan Schulz
101 UNIVERSAL WRENCH (FLICKR)
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Description: |
| The patent describes a fixed and pivoted movable jaw that form an adjustable socket, the thumb screw to tighten the jaw, and a hammer poll on the back side of the tool.
The design also appears in a 1921 advertisement for a 101 Wrench distributed by Hutton & Hutton of Springfield, Mass. Lawrence's trademark for "101" in relation to wrenches gives Brookline, Mass. and Bartow, Fla. addresses; the latter corresponding to late 1922 advertisements for the "101 Universal Wrench." |
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