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US Patent: 1,376,709
Spline-finishing broach
Patentee:
Francis J. Lapointe - Ann Arbor, MI

USPTO Classifications:
407/18

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: Jan. 27, 1920
Granted: May 03, 1921

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for American Broach & Machine Co.
Description:
"This invention...has for its object the provision of means whereby, in a single operation, the central opening in the work being operated upon will be made concentric with the outer ends of the spline cut therein."

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