US Patent: 625,457


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US Patent: 625,457

Wrench

Patentee:

William C. McCowan (exact or similar names) - Lancaster, OH

USPTO Classifications:

81/168

Tool Categories:

wrenches : wrench adjustment types : screw adjust wrenches

wrenches : wrench components : wrench adjustment locks

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Applied:	Aug. 29, 1898
Granted:	May 23, 1899

Patent Pictures:

William C. McCowan patent May 23, 1899

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Description:

Internal threads in the handle shift the movable jaw which has a partially threaded shank. A sliding latch on the main shank engages one of a series of notches in the handle to hold the adjustment against accidental change.