US 4,290,376 AGranted

Auxiliary transport device for sewing machines

AssigneeRockwell-Rimoldi S.p.A.

InventorsGianfranco Brusasca, Gianfranco Garzulano

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Abstract

An auxiliary transport device for sewing machines utilized to attach bands to the edge of a workpiece having a pair of spaced roller members disposed in frictional engagement with a band attached to the workpiece and simultaneously rotated incrementally for advancing the workpiece away from the sewing zone. A compensating roller is mounted co-axial with one of the pair of spaced roller members and incrementally rotated therewith in a location to frictionally engage and advance that portion of the workpiece extending from the band. The compensating roller is capable of yielding in a vertical direction without effecting the position of the roller with which it is operatively associated and provides a means for effectively accommodating portions of the workpiece varying in thickness as a result of attachments such as loops, pockets and the like.

Claims5

Dependent claims

An improved auxiliary transport device for sewing machines of the type having a pair of spaced needles with a cooperating presser foot forming a sewing zone for attaching bands to partially sewn workpieces, said transport device comprising:

(a) a support bracket (13) mounted on the sewing machine rearwardly of and in alignment with the needles and presser foot;
(b) an auxiliary transport means defining a first roller (1) extending perpendicular to the direction of sewing and pivotably attached to said support bracket (13) including;
(i) drive means for effecting incremental rotation thereof for assisting in the advance of the workpiece from the sewing zone;
(c) a stretching means for engaging the bands attached to the workpiece defining a second roller (20) spaced from and operatively connected to said first roller (1) for effecting simultaneous incremental rotation therewith;
(d) a compensating transport means defining a third roller (27) mounted co-axial and for incremental rotation with said second roller (20) for engaging and advancing that portion of the workpiece extending from the attached band, including;
(i) yielding means for effecting limited vertical movement thereof when engaging portions of the workpiece varying in thickness.

3 more elements

Dependencies are inferred from the claim text.