US Patent: 995,837
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| Combination Wrench
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Patentee:
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| Louis V. Aronson (exact or similar names) - Newark, NJ |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 29, 1909 |
| Granted: |
Jun. 20, 1911 |
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Patent Pictures:
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Louis V. Aronson patent June 20, 1911 |
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Stan Schulz
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Description: |
| Flat stamped steel open end wrenches held in a frame with a cam-lever clamp. The RONSON set used a central square-shanked bolt with a flat washer and wing nut as described in patent no. 942,993.
A wrench set holder very much like this appears in 1910 advertisements for the TWIN-GRIP wrench.
Other TWIN-GRIP ads show a different set holder -- patent no. 1,001,280.
A 1911 CYCLE & AUTOMOBILE TRADE JOURNAL item alluded to this patent and stated Ronson Specialty Company threatened lawsuits against other makers of "cam & lever" wrench set fasteners.
Corresponding Canadian patent CA-124,279 granted March 8, 1910 is broader and more general in its claims. It includes two additional forms of "external wrap" wrench set holders -- another variant form of toggle clamping lever and an elaboration of the "sleeve" holder described in CA-122,206. |
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