US Patent: 912,582


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


Quick search:	Patent number:	Patent Date:

US Patent: 912,582

Chuck

Patentee:

John A. Leland (exact or similar names) - Montague, MA

USPTO Classifications:

279/56

Tool Categories:

woodworking tools : braces : brace chucks

Assignees:

Millers Falls Co. - Millers Falls, MA

Manufacturer:

Millers Falls Co. - Millers Falls, MA

Witnesses:

Lizzie B. Strachan

Katherine E. Nichols

Patent Dates:
Applied:	Jun. 23, 1908
Granted:	Feb. 16, 1909

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Jeff Joslin (dm)

Description:

The purpose of this chuck is the same as Leland's earlier patent 857947. It differs in that the jaws are not held apart at their base by a spring. Rather, they are attached to resilient arms, on their outer surfaces, by means of a loose pin which allows them to pivot and slide. The jaws are, therefore, free to conform to a straight or tapered shank, with uniform pressure being attained by being trapped between the inclined surfaces of the jaw seat and sleeve.