US Patent: 235,532


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US Patent: 235,532

Bit-brace

Patentee:

Gardiner L. Holt (exact or similar names) - Springfield, MA

USPTO Classifications:

279/86

Tool Categories:

woodworking tools : braces : brace chucks

Assignees:

None

Manufacturer:

Unknown

Witnesses:

B. F. Adams

William H. Chapin

Patent Dates:
Applied:	May 12, 1880
Granted:	Dec. 14, 1880

Patent Pictures: [ 1 | 2 | 3 ]

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Description:

An unlabeled example is reported. The innovation here is a screw that has a hole for the tang of the bit; when the wing-nut is tightened the bit remains centered in the jaws.