Abstract: Tanned leather is dry dressed by plasma deposition at atmospheric pressure of a matrix material such as ITO, a silicone, or polyurethane, upon the protein fibers of the surface of the leather and the collagen fiber skeleton below the surface protein fibers. The leather retains its toughness, elasticity, breathability and softness or hand.

Abstract: Tanned leather is dry dressed by plasma deposition at atmospheric pressure of a matrix material such as ITO, a silicone, or polyurethane, upon the protein fibers of the surface of the leather and the collagen fiber skeleton below the surface protein fibers. The leather retains its toughness, elasticity, breathability and softness or hand.

Abstract: A demonstration appliance has a human figure comprising a head region, a foot region with a convex downward or pointed foot surface, and a block whose height matches that of the foot region. The block comprises at least two, preferably three, superimposed separable layers and has an upward-opening recess for receiving the foot region. Said recess is formed by an opening in each layer. The opening in the first layer has an overdimension with respect to and around the lower part of the foot region which is lodged in the first layer, such that the latter alone loosely holds the foot region and, hence the figure, and, in the event of shaking, for example if the figure is lightly tapped, will not prevent tilting. The shape of the opening in the other layer is adapted to the corresponding part of the foot region so that the foot region lodged in the openings of the superimposed layers cannot be tilted from the vertical through an angle greater than +/-10.degree..

Abstract: Powders with a relatively low bulk density can be emptied from transportation containers only with a large and undesired production of dust. The apparatus for emptying powder-filled containers consists of a suction tube on which a fluidizing device is arranged in the neighborhood of the open end of the tube. This fluidizing device can have the form of a double-jacketed cone concentrically about the tube, or a hollow sphere concentrically about the tube. Fluidizing air can be introduced into the powder through bores arranged in the direction of the opening of the tube. To prevent the suction tube being sucked onto the container wall, the opening of the suction tube has a crenelated edge.

Abstract: A dialyzing membrane, especially for hemodialysis, formed as a hollow fiber, tubular foil or flat sheet by regeneration of cellulose from a cuprammonium solution, the membrane comprising at least two firmly adhered cellulosic layers including at least one dialyzing layer consisting essentially of a semipermeable regenerated cellulose and at least one adsorbent layer consisting of said regenerated cellulose containing embedded therein fine particles of an adsorbent material in an amount of up to 95% by weight with reference to the dry weight of the adsorbent layer, preferably 1 to 90% and especially 20 to 70% by weight, when the adsorbent layer is part of a hollow fiber structure.

Abstract: The arrangement comprises a spool core secured at one end to a driving shaft and having at the other end an annular groove for catching the continuously fed wire to be wound. A hydraulically or electrically controlled pressing ring is arranged for axial movement into the groove to clamp the wire after its introduction into the groove. The flange of the spool adjacent to the groove has an outwardly sloping surface to assist in guiding the wire into the groove and is provided with radial slits in which tiltable arms are supported to be removed into a position perpendicular to the surface of the core.

Abstract: A dialyzing membrane, especially for hemodialysis, formed as a hollow fiber, tubular foil or flat sheet by regeneration of cellulose from a cuprammonium solution, the membrane comprising at least two firmly adhered cellulosic layers including at least one dialyzing layer consisting essentially of a semipermeable regenerated cellulose and at least one adsorbent layer consisting of said regenerated cellulose containing embedded therein fine particles of an adsorbent material in an amount of up to 95% by weight with reference to the dry weight of the adsorbent layer, preferably 1 to 90% and especially 20 to 70% by weight, when the adsorbent layer is part of a hollow fiber structure.