US Patent: 1,376,709
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| Spline-finishing broach
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Patentee:
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| Francis J. Lapointe (exact or similar names) - Ann Arbor, MI |
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Patent Dates:
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| Applied: |
Jan. 27, 1920 |
| Granted: |
May 03, 1921 |
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Jeff Joslin
Vintage Machinery entry for American Broach & Machine Co.
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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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