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US Patent: 2,028,293
Undercutting Attachment for Lathes
Patentees:
John J. O'Brien - South Bend, IN
Miles W. O'Brien - South Bend, IN

USPTO Classifications:
29/27B, 409/302, 409/327, 82/152

Tool Categories:
metalworking machines : metal lathes : metal lathe accessories

Assignees:
None

Manufacturer:
Not known to have been produced

Witnesses:
none listed

Patent Dates:
Applied: Jan. 11, 1935
Granted: Jan. 21, 1936

Patent Pictures: [ 1 | 2 ]
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Description:
George J. Oltsch - patent attorney

This invention relates to undercutting attachments for lathes, and particularly means for accurately undercutting laminations and the like of a cylindrical member mounted on a lathe, such as mica laminations of a motor commutator.

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