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US 4,283,972 AGranted
Thread chaser mechanism for a lathe
OwnerLouis C. Mergel, Jr.inventor
Life of this patent
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Abstract
A thread chaser for a lathe comprising a pair of detectors which signal a selected rotational position of the lead screw and the spindle of the lathe. The particular positions of both the lead screw and the spindle are transformed into a signal which is transformed into an alarm or alerting mechanism.
Claims6
A thread chaser for a lathe comprising:
- a. means for detecting and signalling a selected rotational position of the lead screw of the lathe comprising:
- a first switch, means for activating said first switch during a selected rotational position of the lead screw, and means for signalling the activation of said first switch;
- b. means for detecting and signalling a selected rotational position of the spindle of the lathe comprising:
- a second switch, means for activating said second switch during a selected rotational position of the spindle, and means for signalling the activation of said second switch;
- c. means for indicating coincidental occurrence of a selected rotational position of the lead screw and a selected rotational position of the spindle, said indicating means receiving said position signals of said detecting and signalling means for said lead screw and spindle.
2 more elements
Dependencies are inferred from the claim text.