Abstract: The vibration device according to the invention includes a compensating device influenced by compensating masses for exciting forces caused by the vibrationary movement, the compensating masses respectively being arranged as partial masses on a hollow shaft, being coaxial with respect to one another, and including a displacing rod in their center by means of which the partial masses of the compensating weights can be displaced in the same manner as the eccentric determining the vibrational movement.

Abstract: In a controlled deflection roll comprising a roll shell rotatable about a stationary support and braced or supported by support elements at the stationary support, a rotational moment is intentionally exerted at the opposite ends of the roll shell by force-exerting elements. These force-exerting elements extend in axial direction of the controlled deflection roll but are offset in spaced relation with respect to the lengthwise axis of the controlled deflection roll. These force-exerting elements operate in pairs in opposite directions with respect to one another. A lever arm is formed by the distance or spacing between the force-exerting elements and such lever arm exerts a greater rotational moment in the presence of modest space requirements and without deformation of the roll shell.

Abstract: The apparatus for neutralizing overhanging loads is supported at the roll stand of a calender which opens in downward direction. This apparatus is arranged at both sides of a roll and, during operation, presses from below against the roll suspensions in a predetermined or required position of the roll. This is accomplished by a force which compensates for the overhanging loads. This force is generated or set by movable force transmitters, dimensionally deformable force transmitters or displaceable force transmitters. Upon opening the calender, a force greater than the set force acts upon the load neutralizing apparatus and the force transmitters are moved, dimensionally deformed or displaced, as the case may be, such that a displacement path of the roll into a lower lowered position is provided. The force transmitters for generating the force which compensates for the overhanging loads can be a spring assembly, an air spring or a column or head of liquid supported by a gas cushion.

Abstract: In a press roll having a stationary support member and a roll shell rotatable about the stationary support member and movable in a predeterminate support or pressing direction throughout the entire width of the press roll, the provision of guide devices for the rotatable roll shell enable accomplishing an axial and radial guiding of the rotatable roll shell with minimum friction and without using roller bearings. These guide devices comprise hydrostatic support or pressure elements which can be adjusted in the predeterminate support or pressing direction. Bearing surfaces of the hydrostatic support elements and running or travel surfaces at the roll shell are spherically designed, for instance provided in mirror-image relationship to one another at both ends of the press roll, or at only one end thereof, or at the central or intermediate region of the press roll.

Abstract: The controlled deflection roll comprises a rotatable roll shell supported at a stationary support member by means of a plurality of hydrostatic pressure elements. The hydrostatic pressure elements are sealingly movably guided by guide structure, for example, bores, which define cylinder chambers. Each cylinder chamber is connected by a feed system comprising a feed channel to a source of a hydraulic pressure medium. Between each feed channel and the related hydrostatic pressure element, there is arranged a damping body provided with at least one throttle location, for example throttle bores, through which the hydraulic pressure medium can flow. The damping body defines essentially the only connection between the feed channel and the cylinder chamber.

Abstract: A method of, and washing machine or washer for, washing stock suspensions, wherein a rotatable cylinder having a solid smooth surface is encircled along a portion of its circumference by a movable endless wire or filter band. The stock suspension to be dewatered and washed is infed by a flat jet nozzle between the rotatable solid cylinder and the movable endless wire. The fiber web formed between the rotatable solid cylinder and the movable endless wire has a weight of less than 100 grams per square meter, preferably 30 to 70 grams per square meter. The wire speed and the circumferential speed of the rotatable solid cylinder is in the order of about 400 to 1,200 meters per minute. After through-flow of the stock suspension between the rotatable solid cylinder and the movable endless wire, the dewatered and washed fiber material is removed from the movable endless wire and the rotatable solid cylinder, respectively, collected in a collecting container and delivered for further processing.

Abstract: A method of, and wire machine for, washing stock suspensions is disclosed wherein a cylinder having a solid smooth surface is encircled along a portion of its circumference by an endless wire or filter band. The stock suspension which is to be dewatered is infed between the solid cylinder and the wire by means of a flat jet nozzle. After throughflow of the stock suspension between the cylinder and the wire the dewatered fiber material is removed from the wire and the cylinder, respectively, collected in a collecting container and delivered for further processing.

Abstract: A wire machine, especially for washing stock suspensions, contains one or a number of dewatering cylinders about which there is trained an endless wire or filter band. There is provided at least one stock infeed device which infeeds a substantially flat jet of the suspension which is to be dewatered into a substantially wedge-shaped space or throat located between the wire band and the dewatering cylinder. The dewatering cylinder has a longitudinal axis which is essentially vertically arranged. There are possible different arrangements of the dewatering cylinder or cylinders, the stock infeed devices and material removal devices for removing from the rotatable dewatering cylinder solid constituents or the like contained in the stock suspension. Also there are possible different arrangements and uses of guide rolls for guiding the wire or wire band.

Abstract: A rolling mill or apparatus comprises position detectors or sensors which are disposed upon movable roll shells or movable solid rolls possessing, for instance, hydraulic support or pressure elements. The position detectors act upon regulators for regulating a force differential between a larger pressing force exerted by bottom or lower support elements in relation to a lesser pressing force exerted by top or upper support elements. The excess or resultant of the pressing force produced by the bottom support or pressure elements decreases with increasing height of the position of the rolls until there is established an equilibrium position. During operation there exists an equilibrium condition between the upwardly directed force of the bottom support elements and the sum of the downwardly directed pressing force of the upper or top support elements and the weight of all of the parts therebetween.

Abstract: A controlled deflection roll contains a stationary roll support and a roll shell which is rotatable about the stationary roll support. The roll shell consists of two parts or elements which are coaxially interconnected by friction, and specifically, an inner base body and an outer sleeve. The outer surface of the base body and the inner surface of the sleeve can contain substantially cylindrical stepped surfaces facilitating the mounting or insertion of the sleeve upon the base body and the withdrawal of the sleeve from the base body with the aid of a pressurized fluid medium.

Abstract: A controlled deflection roll containing a stationary roll support and a roll shell rotatable about the roll support. The roll shell is provided with a substantially ring-shaped closure element having an opening which surrounds the roll support in spaced relationship and enables movements of the roll shell in all radial directions in relation to the roll support. The closure element is connected by a torque coupling with the roll support and is provided with a drive gear meshing with a toothed rim provided at the roll shell. Gears can be arranged at both ends of the roll shell and interconnected by a connection shaft.

Abstract: A controlled deflection roll comprising at least one piston-like or punch-like pressure or support element which is provided with a bearing or contact surface upon which there can slide or bear the roll shell of the controlled deflection roll. The bearing or support arrangement at the respective ends of the roll shell, is equipped with throttle disk means for limiting the infeed of a hydraulic fluid medium, typically oil, to the bearings of the bearing arrangements, from an intermediate compartment or chamber located between the roll shell and its roll support or beam. Additionally, between the bearing and an outer seal means there is arranged an outflow element, such as an outflow conduit, for the withdrawal of the oil or other hydraulic medium.

Abstract: An hydroelectric machine is disclosed wherein the rotor of an electric machine is arranged around the rotor of a hydraulic machine, the internal rotor comprising the turbine blades which engage the external rotor to transmit torque therebetween. Each of the internal and external rotors is mounted in a separate radial bearing and the turbine blades of the internal rotor are connected to the external rotor by means of an articulated coupling which permits relative radial movement therebetween. It is preferred to include force compensating means for transmitting circumferential forces between the rotors. Suitable such means comprise an hydraulic servo-motor associated with each blade of which the pressure chambers are interconnected by means of a ring conduit.

Abstract: A deflection compensating press roll is disclosed in which a stationary axial support beam has a roll shell mounted for rotation thereabout and a plurality of hydrostatic support elements provide support along the length of the roll. The support elements include a support shoe having a bearing surface which cooperates with the inside of the roll shell and a piston joined to the support shoe which includes a cylindrical tube having generally constant inside and outside diameters.

Abstract: A hydraulic support element for mounting a movable part at a stationary support or carrier, comprising an elongate support ledge having a bearing surface for slidingly supporting the movable part. The support ledge together with the support or a part arranged at the support delimits a hydraulic pressure chamber containing hydraulic medium which is under pressure and by means of which the hydraulic support element is supported at the support. The support ledge is supported at the support by means of at least two hydrostatic support arrangements having substantially cylindrical guide surfaces. These hydrostatic support arrangements being arranged adjacent one another in the lengthwise direction of the support ledge and containing piston-like parts.

Abstract: An apparatus for determining the pressure forces effective in a rolling mill having at least one controlled deflection roll and at least one counter roll, there being provided beams for simulating the stiffness or rigidity of the counter roll and the shell of the controlled deflection roll. These are further provided pressure elements which simulate the effect of the hydrostatic pressure or support elements of the controlled deflection roll, and measuring elements serve to measure the pressure between the beams. External pressure elements can serve to simulate the effect of external contact or pressure cylinders. With a rolling mill having a number of controlled deflection rolls and a number of solid counter rolls, the beams, the pressure elements and the measuring elements can be appropriately grouped or assembled together. The measuring elements deliver signals which can be employed for controlling or regulating a corresponding rolling mill which is simulated.

Abstract: A controlled deflection roll comprising a stationary roll support and a roll shell rotatable about such roll support. The roll shell is guided, with the aid of guide elements, relative to the roll support in the pressure plane of the controlled deflection roll in order to generate lift-off movements. Lift-off pistons are guided in the roll support and bear against inner surfaces of the guide elements. Each of the lift-off pistons can be arranged within guide means of the related guide element, such guide means being bounded by essentially parallel guide surfaces.

Abstract: A support or pressure element for a controlled deflection roll, comprising a cylindrical piston section intended to be guided in a cylinder bore of a stationary support, a contact or shoe section intended to bear against the inner surface of a roll shell rotatable about the support, and a contact or bearing surface in the form of a section of a cylinder surface where there are formed at least three hydrostatic bearing pockets. The bearing pockets flow communicate by channels with a surface of the piston section located in a cylinder chamber of the related cylinder bore. At least one of the channels possesses at least one portion which extends from a peripheral surface or region of the piston section at an inclination with respect to the lengthwise axis of such piston section closer to such axis.

Abstract: A rolling device or roller mill having a controlled-deflection roll possessing a stationary roll support or carrier mounted in a frame of the rolling mill. A tubular roll shell is rotatable about the roll support and bears thereon by means of at least one bearing or support element. The roll shell is provided at its ends with guide members which are rotatably mounted in the roll shell and which are guided on the roll support in the direction of the pressing or disengaging movement of the roll shell. The controlled-deflection roll is equipped with a scraper device having a scraper blade which, during operation, is in contact with the outer surface of the roll shell, the scraper device being rotatably mounted on the frame. At least one of the guide members has a disengaging or lift-off element which, when the roll shell performs a disengaging or lift-off movement from the operative position, abuts a part of the blade support or carrier and raises the blade off the surface of the roll shell.

Abstract: A controlled deflection roll comprising a fixed support and a hollow shell rotatable about the support and displaceable relative to the support in the direction of a pressure plane. Between the support and the shell there is located at least one hydrostatic pressure or contact element which is effective in the pressure plane and serves for oppressing the roll shell against a counter roll and thus for forming the pressure force of the roll. Additionally, there is provided at least one hydrostatic lift-off element which is effective in the opposite direction with respect to the contact or pressure element and serves for lifting-off the roll shell from the counter roll. The contact element and the lift-off element can be connected by hydraulic lines or conduits to a source of hydraulic pressurized fluid medium.