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US Patent: 1,402,373
Combination Wrench
Charles G. Palmer - Newark, NJ

USPTO Classifications:
81/125.1, 81/177.6

Tool Categories:
wrenches : wrench set holders
wrenches : wrench components : wrench handle components


Not known to have been produced

Fred'k C. Fischer
Ferdinand Noll

Patent Dates:
Applied: Mar. 21, 1921
Granted: Jan. 03, 1922

Patent Pictures:
Charles G. Palmer patent January 3, 1922
USPTO pdf tiff
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The handle section has a box wrench at one end and a pin at the other. The additional flat wrench pieces are double-ended, with a slot running a portion of their length, and paired hook-shaped projections on one side. A clamping bolt of some type holds the set together; the one described and shown in the patent has a cam-action.

In use, the selected wrench piece is slid out of the stack sufficiently to engage the hook around the pin.

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