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US Patent: 1,251,789
Wrench
Patentee:
Hans P. Larsen - Portland, OR

USPTO Classifications:
81/154, 81/186

Tool Categories:
wrenches : wrench adjustment types : quick adjust wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none lisited

Patent Dates:
Applied: Mar. 19, 1917
Granted: Jan. 01, 1918

Patent Pictures:
Hans P. Larsen Pat. January 1, 1918
USPTO pdf tiff
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Description:
The side lever moves the wedge which releases and re-sets the adjusting rack. The patent shows the jaws with default pipe teeth and smooth jaw covers when used as a nut wrench.

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