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US Patent: 492,381
Tool Holder
George Armstrong - Chicago, IL

USPTO Classifications:

Tool Categories:
metalworking machines : metal lathes : lathe tools
metalworking machines : metal planers : metal planer tools


Armstrong Bros. Tool Co. - Chicago, IL

L. K. Gillson
May H. L. Wing
William C. Corlies
J. W. Adams

Patent Dates:
Applied: Jun. 25, 1892
Granted: Feb. 28, 1893

Patent Pictures: [ 1 | 2 ]
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"Vintage Machinery" entry for Armstrong Brothers Tool Co.
Louis K. Gillson - patent attorney

My invention relates to cutter- or tool-holders for lathes and planers. Its object is to provide a holder for cutters used in connection with such tools which will possess great strength; will present the cutter at the most effective angle; will hold the cutter secure and prevent it from impinging upon the tool post or bed plate should it slip back in the socket. The invention consists essentially in the position and shape of the socket of the holder or stock.

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