Abstract: A longitudinally movable chuck for winding cores onto which web-like material, such as paper etc., is wound is longitudinally movable by means of a motorized drive. The chuck includes a clamping core which grips into the winding core. The end face of the winding core is supported against a stop of the clamping core. The clamping core is longitudinally movable on a central part of the chuck. Between the central part and the clamping core a compression spring is located for exerting an axially acting clamping force on the winding core. The central part is provided with a switch which is actuable by the longitudinally shifted clamping core. The switch acts on the motorized drive to achieve a relatively precisely adjustable clamping force.

Abstract: Expanding body which is essentially designed as a hollow beam and, viewed in the cross-section, composed of several flexible walls. At least one of these walls has a higher expandability than the other walls. The internal chamber of the expanding body can be pressurized by a variable fluid pressure. On the use of such an expanding body in a paper machine headbox a wall with a relatively low expandability forms the downstream end piece of a flow guide wall. Its position, which determines the clear width of the discharge opening, is alterable by varying the internal pressure.

Abstract: A rough dosing point with applicator roll 2 is provided which relative to the opposed roll 1 forms a rough dosing gap 6. Located some distance from the rough dosing device is a finish dosing device which comprises a blade element 5 and an opposed roll 4. The web runs through a reversing roll 9 between the rough dosing gap 6 and the point of finish dosing, the distances of the web departure point from the opposed roll 1, of the rough dosing gap 6, and the run-on point of the web on the opposed roll 4 of the finish dosing point given through the blade element 5 being relatively short. The reversing roll having a maximum diameter of 300 mm, and the arcuate course of the web curving at said reversing roll at an angle of reversal between 25.degree. and 60.degree..

Abstract: Air guide box 20 for a paper machine where the paper web 16 to be dried runs together with the backing belt 18 across drying cylinders 10 through 14. The air guide box 20 extends from a point A where the backing belt 18 departs from a cylinder 10, 12 toward a point Z where the backing belt runs on the following cylinder 11, 13. A diverging gap 23 remains between the air guide box 20 and the backing belt 18. The air guide box 20 has in the area of the departure point A a mechanical air boundary layer stripper 25. Facing toward the backing belt 18 and diverging in its running direction from the contact screen, the wall 21 of the air guide box 20 is shaped in accordance with the operationally occurring curved trajectory of the contact screen 18, is composed, preferably in polygon fashion, from flat wall elements 21.1, 21.2 and 21.3.

Abstract: A coating deckle of a coating device including a holder for a soft rubber sealing element wherein the holder includes a sealing tongue aligned parallel to the restrictor plate which extends parallel to the opposite roll supporting the web in the area of the coating device. The sealing tongue bears flat on the restrictor plate and seals in the area of the restrictor plate and the application space which is formed between the restrictor plate of the web or opposite roll and the blade element. The restrictor plate includes a groove in which the sealing tongue is movably held.

Abstract: The apparatus has a main line having stages of cleaning batteries (S1-S5). The respective battery of each individual stage consists of cleaners such as hydroclones which produce three fractions. The medium fraction is conveyed from stage to stage. The heavy fraction of the first stage is cleaned in a first secondary circuit (N1) and the light fraction of all main line stages S1 to S5 is cleaned further in a second secondary circuit N2. The heavy fraction of the main line stages (S2 to S5) following the first stage (S1) is conveyed as accept to a paper machine reservoir, as is the light fraction of the first secondary circuit (N1). The heavy fraction of the second secondary circuit (N2) is conveyed to the inlet of the main line first stage (S1), whereas the light fraction of this second secondary circuit (N2) is cleaned further. The hydroclones of the two secondary circuits may be of the type which is capable of preparing three fractions.

Abstract: A coating deckle of a coating device including a holder for a soft rubber sealing element wherein the holder includes a sealing tongue aligned parallel to the restrictor plate which extends parallel to the opposite roll supporting the web in the area of the coating device. The sealing tongue bears flat on the restrictor plate and seals in the area of the restrictor plate and the application space which is formed between the restrictor plate of the web or opposite roll and the blade element.

Abstract: A headbox for dispensing a machine-width suspension flow from a machine-width nozzle type discharge channel which is defined by two machine-width flow control walls converging on each other. Located on the downstream end is a machine-width discharge gap for the flow of suspension. One of the two flow control walls is for fine adjustment of the discharge gap width and is equipped with an elastically flexible wall section which extends across the machine width. This wall section is equipped with a number of areal heating elements in a succession across the machine width, with which material layers having different coefficients of heat expansion may be coordinated. By appropriate heating of individual heating elements it is possible to achieve a local deformation of the flexible wall section and thus a local change of the discharge gap width and a correction of the basis weight cross profile of the paper web produced.

Abstract: A coating device where the pressurized coating space formed between the doctor element and the material web and/or the counter roll carrying it is defined by a regulating plate on the inlet side relative to the material web. A guide device is so arranged in the coating space that coating mixture will circulate around it on all sides in one direction of rotation. The guide device generally leaves only relatively narrow flow channels open in the coating chamber so that harmful turbulent flows are extensively avoided which through pulsating air inclusions might lead to defects in the applied coating.

Abstract: Taught is an air guide box for stabilizing the run of a web, for instance a paper web, specifically for the drying section of a paper machine. The air guide box is connected to a blowing air supply and extends transverse to the running direction of the paper web. The paper web proceeds, preferably together with a backing belt, from one drying cylinder to another drying cylinder. A first wall of the air guide box, viewed in cross section, extends along the paper web or the backing belt forming a first gap therewith. A second wall extends along the cylinder surface of the first drying cylinder. Provided in the first wall is an opening which extends across the length of the air guide box and serves to remove the air from the first gap into the interior of the air guide box. Said opening is connected with an intake line of the blowing air supply.

Abstract: A defrothing apparatus whose inlet opening of the foamed liquid contained in a foam duct of a primary flotation apparatus is provided in the bottom of the foam duct. Starting from the lower area of the defrothing apparatus, a rotary flow (potential vortex) is generated in the apparatus by a recirculated lqiuid quantity from a secondary flotation apparatus. In the core of the rotary flow the gas quantity (air) is collected and removed through a removal pipe. Consequently, the foamed liquid from the foam duct of the primary flotation stage which is pumped to the secondary flotation stage contains small shares of gas relative to the total quantity of liquid, thereby allowing the pump to be optimally sized of efficiency and better control of the system.

Abstract: A method and apparatus for decomposing waste paper in a storage tank (tower) under the effect of chemicals with a high stock concentration (high-consistency stock method), including the rotation of the paper pulp together with dilution and a vigorous extensive disintegration of the waste paper or rags by a slushing rotor in the lowest part of the storage tank (tower).

Abstract: An automatic release buckle assembly including a mating buckle and latch tongue. A resiliently biased tongue latch engages the latch tongue to prevent withdrawal of the latch tongue from the buckle. A manually operable release mechanism is provided for causing the tongue latch to disengage the latch tongue to permit withdrawal of the latch tongue from the buckle. An automatic release device causes the tongue latch to disengage the latch tongue and includes an element movable between first and second positions where in the second position the tongue latch is disengaged from the latch tongue. A support is provided for supporting the movable element in the first position and a resilient element is provided for urging the movable element from the first position to the second position when the movable element becomes unsupported in the first position.

Abstract: A headbox, preferably for a paper machine, has a nozzle chamber with a slice gap, which is confined by a top and a bottom lip wall and by two side walls. The nozzle chamber is divided for the production of multi-layer fibrous stock webs into two or more machine-wide flow channels. For this purpose at least one wedge-shaped partition wall extends through the nozzle chamber from one side wall to the other, with this partition wall projecting through the slice gap in the direction of flow. Each of the two side walls is subdivided along the partition wall into two side wall sections. The partition wall is clamped between the side wall sections in the area of each side wall.

Abstract: The screen wire has depressions (5), on the base of which there are fine slits (4) or wire holes. The depressions are generally oblong, their longitudinal extension being parallel or slightly inclined to the axis of rotation of a rotor and the screening blades (2) skirting close to the screen surface. The front edge of the depressions (5)--viewed in the direction of rotation of the screening blades (2)--is inclined towards the enveloping surface of the screen, and has an angle of between 15.degree. and 60.degree. from the surface perpendicular and is preferably inclined at 30.degree.. The slits or rows-of-holes run parallel to the front edge of the depressions (5). These screen cages for the screening of screening fiber suspensions provide better screening efficiency and they have less blockage.

Abstract: The clamping head features a cylindrical section engaging the winding core with a threading which digs in inside the core and a subsequent collar forming a stop for the end face of the core. To obtain a form fit which spares the core, the threading is fashioned as a round threading.

Abstract: In a device for stabilizing the run of a material web, which successively runs over two rolls, namely a delivering and a receiving roll, there is a box provided that extends between the delivering and the receiving roll across the width of the paper web. This box has a so-called guide wall that extends along the course of the material web, with an air gap remaining between the guide wall and the material web. Additionally provided on the box are means which create a vacuum in the air gap. In a device of this type, the guide wall is shaped in a way such that its spacing from the theoretical trajectory plane tangent to the two rolls is in the center area of the material web greater than it is in the araa of the material web edges. A device of this type serves to better stabilize the smooth running of the material web on its way between the rolls.

Abstract: An armlet device with an electrode for picking up physiological electrical potentials is described.The electrode comprises, on one side, a pad which can come into contact, via a conductive paste, with the body of a patient, and on the opposite side, a contact stud connectable with a terminal connector of an electrical connection cable leading to apparatus for processing the said physiological potentials. The pad and the contact stud are supported by a body which is provided with tongues for connection to the armlet in such a way that the outer contact surfaces of the pad and the stud face towards opposite faces of the armlet.

Abstract: A roll assembly having a roll cylinder, a roll core and pressure transfer elements, which assembly is tightened for a grinding operation by applying hydraulic pressure through the pressure transfer elements and aligning the plane of the hydraulic overall pressure force to reduce to about zero the bearing play in the area of the contact line of the grinding wheel. The roll cylinder is mounted on the roll core through antifriction bearings, and in the finished apparatus, such as a calender, reduction of bearing play will compensate for wall thickness errors in the races of the antifriction bearings.

Abstract: A valve device for a gas cylinder or the like, characterized in that it comprises an axially mobile piston (3) within a valve-body (1) coming to bear by one end against a seat (2), the piston moving axially by means of a handwheel (4) to which it is connected by an assembly (9, 10) allowing the rotation of the handwheel in relation to the piston.