US Patent: 2,209,211
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| Circle Cutting Attachment For Rotary Shears
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Patentee:
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| Henry C. Smith, Jr. (exact or similar names) - Chicago, Cook County, IL |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
May 31, 1939 |
| Granted: |
Jul. 23, 1940 |
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Joel Havens
"Vintage Machinery" entry for Quickwork Co.
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Description: |
| Claim:
This invention relates to circle cutting attachments for rotary shears of the type in which the center of the work-holders will during the cutting operation automatically be caused by the pull of the rotary cutters upon the blank to automatically move to proper position for cutting a true circle. |
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