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US Patent: 553,531
Drill-chuck
Patentee:
George S. Long - Hartford, CT

USPTO Classifications:
279/61

Tool Categories:
metalworking machines : drilling and boring : drill presses : drill press chucks
woodworking machines : wood drilling and boring : drill presses : drill press chucks

Assignees:
Pratt & Long Chuck Co. - Hartford, CT

Manufacturer:
Pratt & Weir Chuck Co. - Hartford, CT

Witnesses:
Willard Eddy
Henry J. Gillette

Patent Dates:
Applied: Feb. 18, 1890
Granted: Jan. 28, 1896

Patent Pictures:
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"Vintage Machinery" entry for Pratt & Weir Chuck Co.
Description:
In January 1895, the Pratt & Long Chuck Co. was renamed to the Pratt & Weir Chuck Co.

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