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US Patent: 109,913
Wrench
Patentee:
Christian Knisely (exact or similar names) - Chicago, IL

USPTO Classifications:
81/150

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
G. H. Frost
John Jones
E. A. Ellsworth

Patent Dates:
Granted: Dec. 06, 1870

Patent Pictures:
Christian Knisely Pat. Dec. 6, 1870
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Description:
The cam lever applies pressure on a set of plates inside the movable jaw to hold adjustment. The space between the plates can be shimmed to compensate for wear or tighten the grip. A screw on the back of the shank prevents the movable head from sliding off.

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