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US Patent: 473,048
Wrench
Patentee:
John Albert Zander (exact or similar names) - San Francisco, CA

USPTO Classifications:
81/126

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

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
F. R. Cornwall
D. K. Watson
Alfred A. Enquist
John E. Sundstrom

Patent Dates:
Applied: Nov. 09, 1891
Granted: Apr. 19, 1892

Patent Pictures:
John Albert Zander patent April 19, 1892
USPTO (New site tip)
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Description:
Screw-adjust nut wrench. The base of the frame for the adjusting screw can slide a short distance. The handle has a pivot connection to the shank of the fixed jaw. It can swing slightly in relation to the shank of the fixed jaw, and has cam action to tighten the grip.

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