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US Patent: 450,651
Wrench
Patentee:
David E. Van Horn - Elkhart, IN

USPTO Classifications:
81/100, 81/129.5, 81/DIG.6

Tool Categories:
wrenches : pipe wrenches

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Frank P. Davis
L. G. Comer, Jr.
E. J. Crull
Charles S. Henderson

Patent Dates:
Applied: Apr. 08, 1889
Granted: Apr. 21, 1891

Patent Pictures:
David E. Van Horn patent April 21, 1891
USPTO pdf tiff
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Description:
Adjustable jaw "hook jaw" pipe wrench with a pivot consisting of intersecting teeth . Jaw and pivot held in contact by a leaf spring.

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