US 5,513,585 A · Apparatus for cutting and turning piped openings in cloth workpieces

Abstract

A device for cutting and turning a piped opening in a cloth workpiece which includes a main piece of cloth and a cloth strip sewed to it. The workpiece has a slit, and corner cuts are formed at the slit ends by corner knives with the workpiece lying on a support plate. Turning tools are introduced into the slit at positions located spaced from the corner cuts. The turning tools are then moved apart toward positions located closer to the corner cuts and thereupon lowered, so as to turn the piped opening. Inserting devices may be provided for initially pushing at least part of the workpiece into the slit before being engaged by the turning tools. An orienting device furthermore may orient the workpiece at an acute angle or perpendicular to the support plate for being engaged by the turning tools.

Claims34

Dependent claims

An apparatus for cutting and reversing piped openings in a fabric workpiece which includes a fabric strip sewn by seams onto a main fabric piece, and a slit between the seams, comprising:

a support plate;
a pair of clamping parts for clamping the workpiece to the support plate on either side of the slit;
a pair of corner knives displaceable at least vertically from below the support plate for incising the ends of the slit;
and
a pair of reversing tools for reversing the fabric strip after the incision, the reversing tools being mounted on said apparatus for being introduced into the slit from below the support plate at positions spaced from the incised ends, and thereafter moved into an upper extended position above the support plate, and for being horizontally movable independently of the corner knives in opposite directions to one another in the longitudinal direction of the slit, for engaging the incised ends of the slit before reversing the fabric strip.

2 more elements

An apparatus for cutting and turning piped openings in cloth workpieces which include a strip of cloth sewn by seams onto a main piece of cloth, and a slit between the seams, the apparatus comprising:

a support plate for receiving the workpiece;
a pair of corner knives for producing corner cuts at ends of the slit;
a pair of turning tools with edges for engaging and turning the workpiece;
a pair of first bearings in which the turning tools are movably received for displacement parallel to the slit;
a pair of second bearings in which the corner knives and the turning tools are received for displacement between a lowered position and a raised position for cutting and turning the workpiece, the corner knives and turning tools having independent respective second bearings;
a first drive for the displacement of the turning tools parallel to the slit;
and
a second drive for displacing the corner knives and the turning tools;
wherein the first drive has a positioning drive for guiding the turning tools initially for entry into the slit at positions remote from the corner cuts, and, after reaching the raised position, and before turning the workpiece, into positions located closer to the corner cuts.

6 more elements

Dependencies are inferred from the claim text.

Apparatus for cutting and turning piped openings in cloth workpieces

Life of this patent

Apparatus for cutting and turning piped openings in cloth workpieces

Life of this patent

Abstract

Claims34