US Patent: 83,554
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Screw Threading Machine
Improved Screw Cutting Lathe
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Patentee:
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| Henry F. Shaw (exact or similar names) - West Roxbury, Suffolk County, MA |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Granted: |
Oct. 27, 1868 |
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Joel Havens
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Description: |
| The nature of my invention consists in connecting, with the tool-carnage of a screw-cutting lathe, a lever, which is operated by a nut running on the actuating screw of the lathe, the lever being so arranged, in combination with the nut of the actuating-screw, that its length may be changed at will, thus regulating the relative speed of the tool-carriage, and consequently the pitch of the screw being cut. |
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