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US Patent: 174,287
Improvement in Tool-Holders
Patentee:
Charles F. Packard - New Britain, CT

USPTO Classifications:
279/44

Tool Categories:
tool holders

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
Henry Richards
Justus A. Traut

Patent Dates:
Applied: Jan. 27, 1876
Granted: Feb. 29, 1876

Patent Pictures:
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Description:
The handle is in two, longitudinal, halves, with allowance made for a slight pivoting action. The simple act of tightening the screw cap forces the cap-end of the handle slightly apart, causing the other end to clamp onto the bit, or tool.

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