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Description: |
| Claim:
In a threading machine, the combination with means for, supporting the work, of a plurality, of thread forming cutters, a support for said cutters movable longitudinally of the work and in which the cutters are movable transversely of the work, a cam ring mounted on the cutter support and operative by rotation to convergently and divergently move the cutters in the transverse direction, a rack slidably mounted in the cutter support, adjustable linkage operatively connecting the rack with the cam ring, and a relatively fixed bar having slidable connection with said rack and adjustable to positions angularly disposed to the path of said cutter support whereby the rack in its movement with the cutter support is longitudinally displaced to actuate the cam ring. |
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