Sewing machine with a needle bar jogging frame

Details Sewing machine with a needle bar jogging frame Sewing machine with a needle bar jogging frame

1988-07-08

1989-05-16

Falik, Andrew M.

Sewing

Stitch forming

Feeding work material

112311, 112320, D05B 2706

Patent

active

048299227

ABSTRACT:
In a sewing machine having a needle bar jogging frame in which a needle bar which can be driven with a reciprocating motion in its longitudinal direction is mounted, the jogging frame is in the form of a member of a parallel four-bar linkage. For this purpose the frame is mounted by way of a guide lever and a lever so as to be movable parallel to itself in the heat of the sewing machine. The lever and the guide lever are designed equal in length and arranged parallel to one another. This development creates a simply constructed jogging frame so that the needle bar and thus also the needle are always moved or displaced parallel to themselves in the jogging plane of the jogging frame, irrespective of the stitch length and irrespective of whether the sewing direction is forward or backward to produce lock stitches.

REFERENCES:
patent: 989538 (1911-04-01), Rontke
patent: 2292257 (1942-08-01), Zeier
patent: 3313258 (1967-04-01), Wulbrede et al.
patent: 3927629 (1975-12-01), Vollmar
patent: 4611548 (1986-09-01), Hull
patent: 4616586 (1986-10-01), Scholl

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