Motion transfer apparatus for tufting machines

Details Motion transfer apparatus for tufting machines Motion transfer apparatus for tufting machines

1980-05-08

1981-08-11

Feldbaum, Ronald

Sewing

Special machines

Buttonhole

D05C 1500

Patent

active

042828180

ABSTRACT:
A motion transfer apparatus interposed between a tufting machine needle bar and a needle bar positioner includes a first drive coupling member in the form of a wedge tooth connected to the positioner to follow its transverse step-wise movement, and a second drive coupling member in the form of a tooth receiving wedge socket mounted for movement toward and away from the tooth and for movement directed by the tooth when the members are coupled. The socket member is moved toward and away from coupling engagement cyclically by a follower whose movement is controlled by a cam driven in timed relationship with the tufting machine. The configuration of the cam moves the follower and thus the socket toward and into coupling engagement with the tooth during the small portion of the tufting machine cycle when the needles are above the base material, and to disengage and uncouple during the remaining major portion of the tufting machine cycle. The positioner device may therefor jog the first drive coupling member during the disengaged portion and this step motion is transmitted to the needle bar by the socket during the smaller portion of the cycle.

REFERENCES:
patent: 3026830 (1962-03-01), Bryant et al.
patent: 3934524 (1976-01-01), Smith
patent: 3964408 (1976-06-01), Smith
patent: 3972295 (1976-08-01), Smith
patent: 4173192 (1979-11-01), Schmidt et al.

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