US Patent: 3,774,501
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| Thread Milling Attachment
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Patentees:
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| Roger W. Brown (exact or similar names) - Windsor, Windsor County, VT |
| Hinkley H. Ranney (exact or similar names) - Windsor, Windsor County, VT |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Dec. 22, 1971 |
| Granted: |
Nov. 27, 1973 |
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Joel Havens
"Vintage Machinery" entry for Cone Automatic Machine Co., Inc.
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Description: |
| Abstract:
A thread milling attachment adapted to be mounted in place of a conventional cross slide on a machine tool to make use of the standard mechanism for feeding the thread cutter radially to the desired depth and rotating the cutter in normal manner by conventional attachment gearing. The tool slide for the cutter spindle is separately mounted from the lead screw thus allowing the cutter spindle to travel at an angle relative to the axis of the work spindles while the lead screw remains substantially parallel to the work spindle axes. Axial movement of the thread milling attachment may also be obtained to move the cutter axially relative to the work into position preparatory to feeding the cutter into the work and to move the drive pinion for the lead screw into engagement with a face gear on one of the work spindles. |
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