US Patent: 374,594 - Drill Chuck


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


Quick search:	Patent number:	Patent Date:

US Patent: 374,594

Drill Chuck

Patentee:

Albert D. Goodell (exact or similar names) - Millers Falls, MA

USPTO Classifications:

279/36

Tool Categories:

woodworking tools : hand drills : drill chucks

Assignees:

Millers Falls Co. - Millers Falls, MA

Manufacturer:

Not known to have been produced

Witnesses:

Patent Dates:
Applied:	Jun. 30, 1887
Granted:	Dec. 13, 1887

Patent Pictures:

Albert D. Goodell patent December 13, 1887

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

Description:

This two-stage adjustment has a typical twin-jaw chuck with an added adjustable seat at the base of the chuck. The chuck tightens in the normal fashion. Once the drill shank is gripped, the base of the chuck moves into the seat, which spreads the base of the jaws and tightens their grip.

The specifications include an error correction notice at the very end.