Abstract: A self-closing catheter valve having a housing with an oval cross section and a conical hose attachment connector which can be inserted into a catheter hose. A valve hose piece partially extends through the housing. A V-shaped spring element deforms and constricts the valve hose piece by pressing the valve hose piece against a wall of the housing. An actuation member is positioned within the housing for bringing the self-closing catheter valve into an open position.

Abstract: Books or brochures are produced by transporting a series of elongated piles of superimposed paper sheets longitudinally through at least one bonding station where certain marginal portions of the sheets of each pile are adhesively connected to each other, and thereupon sideways through a laminating station wherein the piles are provided with rigid or semirigid covers which are glued to the outer sides of their outermost sheets. The piles are then advanced lengthwise through a backstripping station, are compressed subsequent to stacking, singularized, trimmed, stacked and thereupon subdivided into stacks of superimposed books or brochures.

Abstract: In handling machines, in particular punching machines, operating in discrete steps, for sheets of paper or similar objects, a warping, waving or wrinkling of the sheets occurs during the deceleration movements of the sheets ahead of the delivery station. These deformations are smoothed by the hold-down device according to the invention, which consists of a circulating perforated endless belt, to which an underpressure is applied from below. There is also synchronization between the feed movement of the sheets and the movement of the endless belt.

Abstract: A web of paper, cardboard, foil or textile material is pulled against and between two rotary knives which sever the web longitudinally and form a slot as well as dust. Such dust is removed by a pneumatic mechanism having one or more nozzles which discharge one or more streams of compressed ionized air against the upper side of the web in the region of the slot, and a suction chamber disposed beneath the path for the web, extending across the slot beneath the nozzle or nozzles, and having one or more suction ports which enable the chamber to collect the particles of dust. The port or ports further enable the chamber to collect those fragments of the web which adhere to the separated sections of the web in the region of the slot between such sections.