Sewing – Special machines – Buttonhole
Patent
1975-10-08
1976-06-22
Hunter, H. Hampton
Sewing
Special machines
Buttonhole
D05C 1526
Patent
active
039644081
ABSTRACT:
A patterning device for a tufting machine including a rotary shaft carrying three cams and driven in timed relationship with the tufting machine. Two of the cams each act to cyclically oscillate a respective pawl carrying carriage in opposite directions toward and away from the other during a substantial portion of each cycle. Two sets of ratchet teeth one for each pawl are secured to an output drive member which may be coupled to a tufting machine fabric or needle bar shifting system. A programmable pattern controller drive in synchronization with the shaft selectively controls the engagement of the pawls with the respective set of ratchet teeth during a portion of the cycle when each carrier is moving in a first non-coupling direction and when the directions reverse motion is transmitted to the ratchet by the engaged pawl. The third cam controls a locking tooth to cyclically engage with and disengage from a set of teeth in a locking and alignment plate secured to the output drive member. The locking tooth is engaged during a major portion of every cycle and controllably releases the output drive member only during that portion of the cycle in which the pawl carriers are moving in the motion transmitting direction.
REFERENCES:
patent: 3100465 (1963-08-01), Broadrick
patent: 3301205 (1967-01-01), Card
patent: 3511976 (1970-05-01), Nidenberg et al.
patent: 3895355 (1975-07-01), Shorrock
Bell Edward L.
Hunter H. Hampton
Ruderman Alan
Smith Robert E.
The Singer Company
LandOfFree
Patterning device for tufting machines or the like does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Patterning device for tufting machines or the like, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Patterning device for tufting machines or the like will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2282325