US Patent: 1,041,967


	Home\| FAQ	Search:Advanced\|Person\|Company\| Type\|Class	Login


Quick search:	Patent number:	Patent Date:

Wrench

Patentee:

William Cronk (exact or similar names) - Montour Falls, NY

USPTO Classifications:

81/112

Tool Categories:

wrenches : alligator wrenches

wrenches : wrench adjustment types : quick adjust wrenches

Assignees:

None

Manufacturer:

Cronk and Carrier - Elmira, NY

Witnesses:

Patent Dates:
Applied:	Oct. 25, 1910
Granted:	Oct. 22, 1912

Patent Pictures: [ 1 | 2 ]

William Cronk patent October 22, 1912

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Stan Schulz
Cronk Hanger Co.
Biography of William Cronk

Description:

The sliding button adjusts the jaw width; the patent shows a locking knurled nut. The adjustment mechanism was used on both adjustable "alligator" wrenches and nut wrenches like those shown in pictures #29, #450, #451, and #574 in "Antique and Unusual Wrenches" by Schulzes.

Ken Cope's "American Wrench Makers 1830-1930" gives a brief history of the manufacturer.

Patent no. 618,485 uses a very different principal of slide at the intersection of two slots.