Abstract: A cutting device for a sewing system having a work table, and a material clamp on the work table for transporting sewing material to a cutting point. The cutting device includes two wedge-shaped knives arranged at the cutting point, for producing gusset cuts in the material, and an elongated opening in the work table for allowing the wedge-shaped knives to pass through the work table to cut the material. The cutting device further includes a clamping device for clamping the material at the cutting point so as to increase the tension in the material and thereby increase the controllability of the location at which the wedge-shaped knives make the gusset cuts. Preferably the camping device which includes two transversely movable clamp halves tightens the sewing material transverse to the direction of transport of the sewing material. Further, a slide plate attached to the surface of the work table includes shoulders or tensioning beads for tensioning the material.

Abstract: A small part (42) is automatically lowered, with its front side (76) facing upward, directly onto a main part (43) which is spread out on a worktable (2), the front side (76) of said main part also facing upward. The respective patterns of the main part (43) and the small part (42) are aligned. Then the small part (42) is automatically turned over, whereby it then can be deposited, with its front side (76) facing downward, on a sewing-material clamp (8). The latter transports both the main and small sewing parts, fixed in position, first to the sewing station (68) and then to the cutting station (6).

Abstract: In a sewing machine, particularly one useful for producing piped pockets, wherein the pieces to be sewn to a workpiece include a slide fastener or zipper, a transfer device for transferring the slide fastener containing sewn pieces to the workpiece is provided. The transfer device includes a grip-fold stamp which is vertically movable toward the piece to be sewn which is held over a plate by vacuum, with the slide fastener held in a pocket of the plate. The grip-fold stamp is moved down to the plate and holds the area of the sewn piece adjacent to the slide fastener. A clamping strap on the grip-fold stamp is movable by an appropriate servoelement, either electromagnetic or air pressure cylinder, into the pocket in the plate and beneath the slide fastener for holding the sewn piece at the slide fastener at the underside of the grip-fold stamp.

Abstract: A pocket opening sewing machine including a cutting device for producing two notching cuts at the ends of a pocket opening. The sewing machine has sewing needles and a belt driven clamping device for clamping to the sewn parts for advancing them in an advancing direction. The cutting device includes two knives spaced apart. The knife that is further from the sewing needles is movable toward the stationary knife that is closer to the needles. For adjusting the spacing between the knives, the movable knife is temporarily clamped to a moving belt which moves it toward the stationary knife. An adjustably positionable stop defines the furthest limit of spacing between the stationary and movable knives and a spring drives the movable knife against the stop. The clamping of the movable knife to the belt is initiated by a sensor which senses the passage of a sewn part and which operates a microcomputer with pocket length information stored in it to move the movable knife when required over the distance required.

Abstract: In a sheet-like filter element comprising a porous or fibrous filtering layer and a pair of opposite cover layers, these cover layers are maintained in tight engagement with the outer surfaces of the filtering layer by means of transversely extending connecting strings. The filter element may, for example, be used as a filter for a gas venting opening in a stoma bag, and in that case the porous filtering layer contains a big amount of finely granulated activated carbon. The connecting strings maintain the cover layers pressed against the filtering layer so as to avoid any tendency to delamination of the filtering layer and formation of undesired spaces or passages therein.

Abstract: A method and system for separating an aqueous suspension containing fibrous particles into fractions of different average characteristics. The suspension to be separated is supplied to a separator disc rotating in a horizontal plane in the upper part of a chamber, in which collecting means are arranged in different zones to receive material dispersed from the disc. The method and system are effective for the separation of paper pulp suspensions such as groundwood pulp, chemical pulp, sediment or waste paper pulp into fractions of different fibre size and for the cleaning of paper pulp suspensions for impurity particles such as sand, shives and splinters. Another field of application is the separation of mineral wool suspensions into fractions consisting mainly of fibrous and spherical particles, respectively.

Abstract: The invention concerns a rotating round cooler for the cooling of hot loose material, especially hot iron ore sinter, consisting of a ring-form base plate, which is supported with treadrollers on a circular rail, a holding apparatus fastened to the base plate, a cooling chamber which is fastened movably to the holding device with inner and outer walls permeable to gas, whereby at least the bottom edge of the outer wall is located some distance from the base plate, a horizontal passage to the center of the cooler, a charging apparatus above the cooling chamber, a pick-off above the base plate and in the midst of the cooled material, a drive device for the rotary movement of the cooler, inlet devices for the gaseous cooling medium on the inside of the holding device, as well as blowers for the production of the pressure required for the cooling medium.