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US Patent: 144,583
Improvement in tool-holders and cutter-heads for boring-bars
Patentee:
Jerome Wheelock - Worcester, MA

USPTO Classifications:
408/181, 408/187, 74/841

Tool Categories:
metalworking machines : drilling and boring : boring bars
metalworking tools : boring bars
metalworking machines : drilling and boring : boring heads

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
E. C. Heywood
George H. Southwick

Patent Dates:
Applied: Jul. 02, 1873
Granted: Nov. 11, 1873

Patent Pictures:
USPTO pdf tiff
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Description:
Improvements to the inventor's patent of 1870-10-11.

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