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US Patent: 1,421,014
Attachment for broaching machines
Patentee:
Francis J. Lapointe - Ann Arbor, MI

USPTO Classifications:
409/277, 409/279

Tool Categories:
metalworking machines : broaches

Assignees:
None

Manufacturer:
American Broach & Machine Co. - Ann Arbor, MI

Witnesses:
Nathan C. Lombard
Walter E. Lombard

Patent Dates:
Applied: Feb. 02, 1921
Granted: Jun. 27, 1922

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for American Broach & Machine Co.
Description:
"This invention relates to broaching machines and has for its object the provision of a machine of this character particularly adapted to form aligned holes in bifurcated members such for instance as the two parts of a universal joint."

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