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US Patent: 598,203
Lock and Wrench
Patentee:
John Johnson - Hartford, CT

USPTO Classifications:
70/14, 70/18, 70/227, 81/170, 81/52, 81/77

Tool Categories:
wrenches : wrench combination tools
wrenches : bicycle or pocket wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Chas. D. King
Fred. J. Dole
Heath Sutherland

Patent Dates:
Applied: May 17, 1897
Granted: Feb. 01, 1898

Patent Pictures:
John Johnson patent February 1, 1898
USPTO pdf tiff
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Description:
Intended as a cyclist's tool; the lock feature is a screw coordinated with holes in the shank of the movable jaw, and requiring a key to turn it. The screw is guarded by a surrounding "carrier."

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