US Patent: 2,028,293 - Undercutting Attachment for Lathes


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US Patent: 2,028,293

Undercutting Attachment for Lathes

Patentees:

John J. O'Brien (exact or similar names) - South Bend, IN

Miles W. O'Brien (exact or similar names) - South Bend, IN

USPTO Classifications:

29/27B, 409/302, 409/327, 82/152

Tool Categories:

metalworking machines : metal lathes : metal lathe accessories and attachments

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.