Abstract: Apparatus for forming an extended nip between a mating roll and a shoe roll for treating a product web, the shoe roll having a stationary carrier and a flexible roll shell which can rotate around the carrier and which, in the region of the extended nip, is supported on a hydrodynamically lubricated running surface of a press shoe guided on the carrier, for which purpose a device for applying lubricant to the inner side of the roll shell is provided, where, in an inlet region, the press shoe has a plurality of holes which are arranged transversely with respect to the machine running direction, are connected to a lubricant supply in order to be fed with lubricant and, for this purpose, end at the running surface, and the holes comprise restrictors whose resistance is designed for a pressure drop of 5 to 15 bar.

Abstract: A gas burner includes a burner tube which has on one side a row of burner nozzles aimed against a surface to be heated. In the interior of the burner tube, at least one slider is arranged which can be moved from outside the burner tube along the tube and by means of which the end burners of the row of burner nozzles can be shut off from the gas supply which is supplied the center of the burner tube, so that the row of the burner nozzles can be adapted to the width of the surface to be heated, e.g., to the width of a web when the burner tube is used to heat a hollow roll used to treat a web.

Abstract: A roll (20) comprises a rotating hollow roll (1) and a stationary crosspiece (5) which extends through the hollow roll (1) lengthwise and the ends of which protrude from the hollow roll (1) and are supported there. The crosspiece (5) comprises a support shoe (10) which is closed against a supporting part (6) of the crosspiece (5) except for feedlines, which is held at the crosspiece (5) in the circumferential direction but is movably guided in the action plane (9) of the roll (20) against the inside circumference (4) of the hollow roll (1) and can be pressed against the inside circumference (4) of the hollow roll (1) under the pressure of the pressure liquid. On the side facing the inside circumference (4) of the hollow roll (1), the support shoe (10) carries longitudinal seals (7) and guiding surfaces (12) which divide off a longitudinal chamber (8) for receiving pressure liquid generating the line pressure, and leakage chambers (15) for receiving leakage liquid.

Abstract: In a floating roll the abutment faces of the transverse seals at the crosshead are not radial or axial but have an orientation corresponding to a spherical surface, the center of which is situated in the center of the adjacent bearing on which the cylinder is supported on the crosshead. When the crosshead flexes, the position of the transverse seal relative to the inner circumference of the cylinder and hence the abutment of the transverse seal at the inner circumference are not changed.

Abstract: A floating roll with longitudinal chambers formed in a space between a hollow shell and a cross piece, of which one chamber is the pressure-effective longitudinal chamber, on which the hollow roll is braced via a pressure liquid, has strip-shaped longitudinal seals provided in duplicate and disposed symmetrically relative to the meridian plane separating the longitudinal chambers so that each of the longitudinal chambers can be sealed against the higher liquid pressure and the cross piece need not be turned around for a change in the direction of action.

Abstract: A roll for a foil-drawing calender or the like which is substantially solid, has a central longitudinal bore hole and has journals supported in outer bearings in a roll stand. In the longitudinal bore hole is a stationary core which is supported, at axial locations corresponding to the ends of the working width, via inner bearings in the longitudinal bore hole and is braced via a hydraulic force-exerting arrangement acting in the working plane of the roll in a direction toward the roll gap and against the inside circumference of the longitudinal bore hole. In the vicinity of the inner bearings and in the region of the outer bearings, load-relieving hydraulic force-exerting arrangements are provided which brace the core against the inside circumference of the longitudinal bore hole and act in the action plane of the roll in the direction opposed to that of the other hydraulic force-exerting arrangement.

Abstract: A device for the reciprocating linear drive of a part, especially of a scraper at a calender cylinder, comprises a driver connected to the scraper and having two mutually parallel oppositely disposed abutments and an eccentric disposed between the abutments. The eccentric has an outside diameter which is smaller than the distance between the abutments. The eccentric is designed as a double eccentric with a driven inner eccentric fixed to a rotary drive shaft and with a freely movable outer eccentric floatingly mounted to the inner eccentric via an antifriction bearing.

Abstract: A roll has a rotating roll shell and a stationary beam extending longitudinally through the shell and leaving an annular space between it and the inner periphery of the shell. A longitudinal chamber having a supply pipe for pressure fluid is formed in the space between the shell and beam and is divided by a sealing system comprising transverse end seals and strip-like longitudinal seals extending on both sides of the plane of action of the roll. Each longitudinal seal is formed by a number of sealing strips staggered in the peripheral direction. A line opens between each pair of sealing strips and contains a one-way valve and leads into an outlet. The one-way valves are set to open at pressures which progressively decrease towards the longitudinal chamber. The transverse longitudinal seals can also be made up of a number of sealing strips staggered in the radial direction.

Abstract: A device for applying a treatment medium, especially in foam form, to a running web of material, especially a rug web, with an application beam extending transversely to the web of material, the application beam having a longitudinal slot, through which the treatment medium emerges onto the web of material. On the side opposite the slot an elastic cushion which presses the web of material against the sliding surface of the application beam is arranged on the back of the web of material. The cushion may be an inflatable elastic hollow body or a foam material cushion.

Abstract: A supercalender at the output of a paper machine includes two pairs of zone-wise deflection-controlled rollers. Each pair has a hard surface roller and a soft roller with an elastic outer layer or covering having a minimum hardness of 85.degree. Shore D. The hard rollers are disposed on one side and the soft rollers on the other side of the travel path of the paper.

Abstract: In a controlled deflection roll comprising a rotating shell forming the working roll periphery and a stationary beam extending lengthwise through the shell and spaced all around from the inner periphery of the shell, the space between the beam and the inner periphery of the shell, in the neighborhood of the operative plane, is divided into chambers by longitudinal seals and a number of transverse seals, the chambers have separate feed lines and each pair of adjacent chambers has a common transverse seal between them. Neighboring chambers are connected by a duct and non-return valves so that the transverse seal is always acted upon by the pressure of the higher-pressure chamber and pressed against the inner periphery of the shell. The chambers can be formed on the side of the beam facing the nip and also on the side remote from the nip and can also be individually filled with pressure fluid at different temperatures.

Abstract: Apparatus for treating webs of material with several buoyant rolls which engage the web of material, consist of a closed buoyant body and are arranged in a trough which contains liquid, is open at the top and is at atmospheric pressure, parallel and adjacent to each other horizontally restrained but freely floating in the vertical direction without touching each other. The rolls may be arranged horizontally side by side without forming roll gaps or vertically on top of each other, forming roll gaps with two guide rolls provided above each buoyant roll.

Abstract: A belt grinder has a pressure roll which is designed as a deflection controlled roll with a hollow cylinder which is supported on a rotation-proof crosshead, and is braced from the inside against the crosshead, particularly hydraulically, with a space between its inside circumference and the crosshead.

Abstract: In a three-roller device for uniformly coating a moving web with small quantities of fluid, the middle roller is provided with a contoured or grooved elastic covering, one of the two other rollers with a smooth elastic covering and the third with an incised elastic covering or sheath. Fluid is transferred to the middle roller from the roller which is not in contact with the moving web, the fluid being introduced either via a pool on a trough or via a spraying apparatus.

Abstract: In order to manufacture molded bodies by pressing finely divided material with a binder while the binder sets, such as to avoid problems caused because of contact of the binder or vapors therefrom with oxygen, the pressing and setting is carried out in a gas atmosphere different from air.

Abstract: A method and apparatus for applying a pattern to a continuously advancing web with a foam containing treatment medium. The pattern may be generated in the foam prior to or after the foam is transferred to the web. In one embodiment, the pattern is generated using two foam feeding devices arranged to form a patterned layer on a revolving element positioned over the web. The forward velocity of the web and the speed of rotation of the revolving element are controlled to obtain the desired pattern effect on the web.

Abstract: Apparatus for applying foam onto continuously advancing webs of material in which several nozzles are provided which are connected to a foam distributor which comprises a chamber with foam outlets as well as a distribution rotor which rotates in the chamber and is in communication with a foam feed line directing the foam from the inside toward the foam outlets.

Abstract: A roll with a revolving hollow roll and a stationary cross head which extends therethrough lengthwise, spaced a distance from the inside circumference of the hollow roll on all sides, has, in the space between the hollow roll and the cross head, a longitudinal chamber provided with a feed line for pressure liquid, divided by a sealing arrangement which comprises strip shaped longitudinal seals extending on both sides of the action plane of the roll, as well as transverse end seals. The transverse end seals are designed as gap seals, the gap surfaces of which are kept spaced from each other by separate precision antifriction bearings.

Abstract: A support rod steamer rod lock has a slot for receiving a support rod end and provided at the slot's ends with normally closed spring-biased latches which at one end of the slot are opened by engagement with the rod end and at the other end of the slot are opened by engagement with a cam.

Abstract: Cooperating hard and soft paper calendering rolls have probes for measuring the soft roll's temperature at different zones along its length and units for controlling the nip line pressure in each zone in dependence of the zone's measured temperature.