Abstract: A dryer section of a paper making machine is divided into several dryer groups, each comprising a plurality of dryer cylinders, a plurality of reversing rolls between neighboring cylinders and a respective web supporting belt wrapping around the cylinders of a dryer group. Within each dryer group, the web travels, in continuous contact with the supporting belt, alternately over the dryer cylinders and the reversing rolls so that the web comes into direct contact with the cylinders and the supporting belt comes into direct contact with the reversing rolls. The cylinders are arranged in several rows which are inclined to the vertical, alternately rearwardly and forwardly defining V-shaped double rows. The end of each row and the starting point of the following row are formed by two cylinders arranged horizontally alongside of each other. The rows of dryer cylinders succeed each other in the manner of a zig-zag line. Each inclined row comprises about three cylinders.

Abstract: A coating process for coating traveling webs comprises applying a first coating layer of a pigment substance on a portion of the shell surface of a rotatable roll not covered by the material web, and pressing the pigment substance onto the web in a press gap, thereby impregnating the web. This makes it possible to apply with maximum uniformity and without web breaks and wrinkles a second coating layer of a pigment substance immediately successive to the application of the first layer, while the first layer is still moist.

Abstract: A winding machine with receiving stations for winding rolls arranged on both sides of a roller, to which web-form material runs alternately (as viewed in machine transverse direction). On a machine frame there are arranged axially unslidable load rollers following one upon another over the usable machine width. The load rollers are movable with operating arrangement against the winding rolls. For the use of the load rollers it is merely required that there be selected those rollers which lie within the width of the corresponding web strip.

Abstract: A doctor bar consists of two different circular disks that are clamped or fixed in some other way on a cylindrical carrier bar. Circular disks having a smaller diameter and made from elastic material alternate with circular disks that have a larger diameter and are made of a very wear-resistant material, specifically ceramic. The difference in the outside diameter makes for one-half the groove of peripheral grooves of the doctor bar that are formed between the various circular disks.

Abstract: The invention relates to a frictional resistance coupling for transmitting torque between two coaxial components, for example a shaft with an articulated shaft, the coupling comprises an outer part and an inner part, which enclose an inner chamber with a conical wall. Inserted to move axially in the inner chamber is an annular piston of the same conicity, so that when the annular piston moves axially by means of a pressure medium, a radial clamping force and thus frictional resistance for transmitting torque is produced. The pressure chambers located on both sides of the annular piston in each case comprise a further connection to a low pressure source. The pressure chamber respectively not supplied with high pressure is supplied with pressure medium from a low pressure source during the displacement process and when the piston reaches the end position within the inner chamber, the opening of the low pressure passage is closed by the end face of the piston.

Abstract: A winder for winding a running web on a winding drum having a journal at each end. Each one of a pair of primary levers has a fork at one end for receiving one of the journals. As the roll is progressively wound, the winding drum is swivelable from a first position situated generally above the backing roll to a second position offset from the first position by an angle of about 90 degrees. The winding drum is received from the primary levers at a pair of secondary levers at the second position. A generally horizontal guideway for the drum extends from the second position to a third position. The roll and the winding drum are forced onto the backing roll by a contact pressure device.

Abstract: A headbox for a papermaking machine has an outlet channel having the width of the machine which is limited by a rigid channel wall and by a movable channel wall. The movable channel wall is part of a channel-wall support. Between the latter and a supporting member, there is a pressure cushion which counteracts the pressure prevailing in the outlet channel. A lift device is swingably mounted, at one end, on the rigid headbox housing and, on the other end, on the channel-wall support. In each of the two end walls of the channel-wall support, there is provided a spherical joint, the center point of which lies in a plane extending through the end point of the channel width. The lift device is coupled to the spherical joint by means of a C-shaped spindle head.

Abstract: The suction roll of a dryer group is in the path of the web and of the web support belt from an upstream dryer cylinder to a downstream dryer cylinder. The suction roll has an annular roll shell having a plurality of radial holes and being free of stationary inserts at least over the predominant part of the length of the roll shell. A hollow roll journal at at least one end of the suction roll connects vacuum into the suction roll and to the radial holes. In at least some of the holes there are respective deflector pieces. Each extends a short radial distance into the inside of the roll shell over a short radial portion. The deflector piece has a continuous channel which extends radially inward through the hole toward the inside of the roll in a direction substantially parallel to the direction of extension of the hole and the radially inward portion of the channel is curved in the direction contrary to the direction of rotation of the roll shell.

Abstract: The drying section of a paper-making machine has a first drying group of a horizontal row of first drying cylinders which alternate with reversing rollers. A first upper web support belt wraps over the top of a first drying cylinder and then wraps the associated first reversing roller. An adjacent second drying group of a horizontal row of second drying cylinders which alternate with reversing rollers. A second lower web support belt wraps over the bottom side of a second drying cylinder and then wraps the associated second reversing roller. The drying cylinders and their reversing rollers are supported on two longitudinal beams which extend beneath the rows of drying cylinders. The drying cylinders of the second group lie at least at the same height above or higher above the longitudinal beams of the drying cylinders than the drying cylinders of the first group. The seocnd drying group is of a height to provide a clearance space over the floor and beneath lower support belt return path guiding rollers.

Abstract: A twin-wire former for making a web of paper (9) having two endless loop travelling screens (11, 12) which travel over respective breast rolls (13, 14) and form a wedge-shaped feed gap of a twin-wire region. In the twin wire region the two travelling screens pass first over a curved stationary supporting device (15), then over a forming roll (16) which lies in the same screen loop (11) as the curved supporting device (15), and finally over a screen suction roll (18) which lies in the other screen loop (18). In order to form a large storage volume for water, an additional lattice-like outer shell (27) surrounded by a coarse-mesh textile filter envelope (28) is arranged on the body (16a) of the forming roll. Approximately half the periphery of the screen suction roll (18) is wrapped by the two screens (11, 12). At the end of the said wrapping zone, the one screen (11) runs off from the screen suction roll (18) followed by the other screen (12) together with the web of paper (9).

Abstract: In order to clean the support region at the bottom end of a doctor element which is clamped to a support and is thereby held to the surface of spreadable material to be doctored, the leaf spring doctor element is removable from a stop on the support against which the leaf spring is clamped in operation by a plate pusher. The support is shaped to have a groove extending along the width of the stop and the support for the doctor element. A sidewall of the groove is defined in a ledge that is movable along the support and along the groove. The sidewall supports oscillation pulse transmitters. A liquid pulse transmitting medium in the groove transmits the oscillations across the grove to the area of the leaf spring support to be cleaned. The oscillation pulse transmitters may be a series of transmitters extending along the sidewall along the groove or may comprise a long bar shaped oscillator which is oscillated at its ends.

Abstract: An endless flexible press jacket for a press roll, a process for its fabrication and an apparatus upon which it is fabricated. The press jacket comprises a radially inner layer of elastomeric material which is provided with embedded layers of reinforcing yarns, an inner longitudinal layer of yarns extending under tension between the lateral ends of the endless tubular press jacket and a helical winding of peripheral yarns pretensioned and wrapped around the longitudinal yarns. The longitudinal yarns are held pretensioned radially above a casting mandrel and the casting nozzle moves along the axis of the casting mandrel delivering a helix of castable jacket material around the casting mandrel. At the same time, the later peripheral yarns are applied into the longitudinal yarns in the applied jacket material.

Abstract: A stationary support device for the drainage wire screen of a fiber web forming section. The cover ledge over which the drainage screen passes has a front edge which the screen passes and then the drainage surface beneath the wire screen diverges from the wire screen in the wire screen advancing direction. The cover ledge is of hard material. The front part of the cover ledge is supported by a support at a rigid pivot joint. The rearward part of the cover ledge is supported by wedge surface connections for permitting adjustment of the tilt orientation of the cover ledge with respect to the drainage wire. Leaf type clamping springs disposed between the cover ledge and the support, disposed rearwardly of the front joint and disposed forwardly of the wedge surface connections. The clamping leaf springs being connected to the cover ledge by tie rods at the center of the spring and to the support by tie rods at the ends of the springs.

Abstract: A headbox for a paper machine with a stock channel featuring an outlet gap. The stock channel is preceded by a turbulence generator in the form of a machinewide bundle of many turbulence pipes. The turbulence generator is composed of two or three machinewide layers of turbulence pipes. The turbulence pipes of adjacent layers differ primarily by different flow cross sections, preferably also by different axial spacings a, A.

Abstract: A doctor is provided on a coating device and is fashioned as an oblong doctor bar which from the cross section, transverse to its longitudinal expanse, features an irregular cross section and a coating surface of bow-shaped design which is provided with grooves, as dosing grooves, which extend crosswise or perpendicular to the longitudinal expanse of the bar. The grooves flatten out from their bottom toward the leaving edge of the doctor bar by 10 to 25%, preferably in bow-shaped fashion. Furthermore, they widen in this area making the ribs provided between the grooves disappear. The doctor bar consists preferably of oxide ceramic material, or features on its coating surface a layer from such material.

Abstract: A press blanket for a press device in a paper making machine, or the like, is formed of an elastomeric blanket material and fully embedded layers of reinforcement threads. The radially inner layer is formed of longitudinal threads which extend parallel to the axis of the press blanket. The radially outer layer is formed of circumferential threads which are wound in the direction of blanket motion and are wound generally helically. The threads are fully surrounded by the layer of elastomeric material which is of homogeneous, that is formed from a single pouring. The circumferential threads have a diameter of at most 1/500 of the outside diameter of the fully rounded press blanket. In a unit area of the press blanket, the tensile strength of the circumferential threads is at least 40% greater than the tensile strength of the longitudinal threads.

Abstract: The dry end or dryer section of a paper making machine has a plurality of dryer groups. Each dryer group comprises a plurality of heatable dryer cylinders, reversing rolls between each pair of the dryer cylinders in the group and an endless web support belt which passes over a dryer cylinder and then a reversing roll and then the next dryer cylinder in turn in the group. Between the last two dryer cylinders with which the lower side of the web comes into contact, there is an auxiliary guide roll over which the support belt travels free of the web, while the web travels directly from the selected dryer cylinder to the next reversing roll. Alternately, the auxiliary guide roll is disposed between the reversing roll and the next dryer cylinder in the web path of travel. Between the dryer cylinder and the auxiliary guide roll can be provided a second auxiliary guide roll which presses the web against the belt before the web separates from the web to pass to the auxiliary guide roll.

Abstract: A two-mass flywheel for installation between an internal combustion engine and gearing is able to cope with peak torques, especially in the region of the resonance rotation rate, with a friction device unlimitedly twistable in the circumferential direction, which is connected in series with a spring unit. With the friction device a displacement chamber and stop are combined so that slipping of the friction device occurs only on hydraulically damped abutting of the two masses, the arrangement being made such that only small masses have to be accelerated for the case of slipping.

Abstract: The coating device features a first applicator which, to begin with, forces coating substance applied on the shell of a web roll (1), in a press gap formed between said roll and a press roll (2), into the web (W), thereby impregnating it. This makes it possible to apply with maximum uniformity and without web breaks and wrinkles, immediately successively, a second coating layer during the still wet condition of the first layer where, naturally, again a web guide roll (3) is provided.

Abstract: A double-mass flywheel for installation between an internal combustion engine and a transmission. A first flywheel mass associated with the crankshaft of the engine has the shape of a first U which opens radially inward and each of the arms of the U forms a side disk. A second flywheel mass associated with the transmission has the shape of a second U which opens radially outward toward the circumference. The second U engages as a center disk between the two side disks. The two masses are turnable to a limited extent with respect to each other, with the interposition of elastic members which rest at least indirectly on the one side against the first mass and on the other side against the center disk. Damping elements are interposed between the two masses and extend parallel to the elastic members. The center disk is formed of three concentric, partial disks, comprising an inner partial disks and two outer partial disks.