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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)
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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.

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