US Patent: 1,885,616


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Wrench

Patentee:

Homer A. Mead (exact or similar names) - Turlock, CA

USPTO Classifications:

81/99

Tool Categories:

wrenches : wrench components : wrench jaw components

wrenches : wrench adjustment types : self-adjust wrenches

wrenches : pipe wrenches

Assignees:

Masterench Corporation - Turlock, CA

Manufacturer:

Masterench Corporation - Turlock, CA

Heller Bros. Co. - Newark, NJ

Witnesses:

Unknown

Patent Dates:
Applied:	Apr. 09, 1931
Granted:	Nov. 01, 1932

Patent Pictures:

Homer A. Mead Pat. Nov. 1, 1932

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Description:

The patent is an improvement on Mead's November 12, 1929 pipe wrench patent (no. 1,735,257). The movable jaw has two angular indentations to accommodate a wider range of sizes, and a "thumb cam" to open the jaw. The spring holding the jaw in the closed position is modified from the earlier patent. The drawing also shows a square opening and textured grip in the handle which are features of some MASTERENCH wrenches, although they are not mentioned in this patent's specifications.