US Patent: 493,829


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


Quick search:	Patent number:	Patent Date:

US Patent: 493,829

Wrench

Patentee:

Peter Mandigo (exact or similar names) - Dover, NJ

USPTO Classifications:

81/137

Tool Categories:

wrenches : wrench adjustment types : quick adjust wrenches

wrenches : wrench adjustment types : screw adjust wrenches

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Applied:	Feb. 09, 1892
Granted:	Mar. 21, 1893

Patent Pictures:

Peter Mandigo patent March 21, 1893

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Stan Schulz

Description:

A ring with partial interior threads is placed between upper and lower sections of the movable jaw. The threads engage with rack teeth on the main shank. This arrangement allows for quick adjustment. A spring pin on the adjusting sleeve engages a notch in the movable jaw frame to hold the adjustment.