US 5,203,268 AGranted

Apparatus for sewing elastic hems on fabric pieces

AssigneeSchips AG Nahautomation

InventorHelmut Schips

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Abstract

An apparatus for sewing elastic hems on fabric pieces is designed as a tandem machine. In a first sewing machine (26a), an elastic band (6) is prefixed at the edge of a fabric piece (8). During further conveyance thereof, the thus created double-ply structure is folded by 180.degree. by a baffle plate (34). A pair of conveying rollers (36, 38) withdraws the double-ply structure from the baffle plate. Between the first sewing machine (26a) and a second sewing machine (26b), provided for finishing the elastic hem, there is provided a deflection roller (40) deflecting the triple-ply structure, formed by said folding and consisting of fabric edge portion, an elastic band, and a fabric folding portion, from the horizontal. The deflection roller (40) is driven in a direction opposite to the conveying direction and thus takes care that the triple-ply structure, also in case of curved seams, remains closed and is sewn correctly.

Claims11

Dependent claims

An apparatus for sewing a curved elastic hem on a fabric piece, said apparatus comprising:

a first sewing machine for fixing an elastic band along an edge portion of the fabric piece;
folding means for folding the fabric piece, at a folding portion, about a longitudinal edge of the elastic band while said fabric piece and said elastic band are being conveyed, and for thereby forming a triple-ply structure formed of the folding portion, the elastic band, and the edge portion of the fabric piece;
and
a second sewing machine for finishing the triply-ply structure;
and
wherein said folding means includes a baffle plate for rotating the triple-ply structure by approximately 180.degree., said baffle plate being located immediately downstream of said first sewing machine, and said baffle plate having an exit end ;
and
wherein said apparatus further includes conveying rollers for withdrawing the triple-ply structure from said exit end of said baffle plate;
and
wherein said apparatus further includes a deflection roller for deflecting said triple-ply structure from a horizontal path of movement, said deflection roller being located between said conveying rollers and said second sewing machine.

7 more elements

Dependencies are inferred from the claim text.