Abstract: A method for agglomerating and dewatering elastomeric material having a relatively high water content wherein the elastomeric material is fed to a pair of counterrotating pressing rolls with a tight nip opening. The elastomeric material is drawn through the nip opening and compacted and dewatered therein. The method of the present invention produces at least a doubling of the particle size of the feed material and a reduction in the water content of the feed material in the range of 30 to 80%.

Abstract: The invention relates to a method for the continuous stretching of a plastics material film, of the type where the film is run off in engagement with two successive rollers which are driven at different tangential speeds, the second roller having a tangential speed which is greater than that of the first roller. The film is run off in engagement with at least a third roller, arranged downstream of the second roller and driven at a tangential speed which is greater than that of the second roller, and it is possible to select as required those of the three rollers in engagement with the film.

Abstract: An adjustable mounting mechanism for a distribution roller in a printing, duplicating or like machine which includes a moisture or ink system having a plurality of distribution rollers for distributing moisture or ink to a printing couple of the machine. A pair of fixed rollers and a removable roller are located on the machine in a triangular configuration with parallel axes of rotation. The adjustable mounting mechanism includes a triangulated array of pivot arms movable generally perpendicular to the axes of the rollers. Two of the pivot arms define a V-shaped yoke to cradle the removable roller, and the other pivot arm defines a clamp for holding the removable roller in the cradle. Each of the other two pivot arms and, therefore, the removable roller is adjustable generally radially toward and away from the respective fixed roller to adjust the pressure or gap between the removable roller and the respective fixed roller.

Abstract: A hydraulic adjustment motor containing a piston-and-cylinder unit is provided at the roll surface of a roll to be moved to position the roll surface relative to another roll surface of a further roll. Each adjustment motor is arranged between the related roll surface to be moved and its related roll stand. A regulation device is arranged between a pressure source, the pressure chamber of the adjustment motor and a hydraulic medium vessel. This regulation device regulates impingement of the pressure chamber with different pressures up to the maximum pressure of the pressure source and regulates the outflow of a selected volume of the hydraulic medium out of the pressure chamber, correlated to the desired lowering of each roll surface, during lowering of the roll surface and for maintaining a residual volume of the hydraulic medium. Consequently, there is provided a defined relative position between the roll surfaces.

Abstract: Mechanism for effecting pressure engagement between two roll fuser members used for fusing toner images to copy substrates. The mechanism is characterized by simplicity of design and serviceability. To this end, one of two roll fuser members is supported on bearing surfaces such that it is lifted or raised upwardly through engagement with the other fuser member as it is moved upwardly. Upward movement of the last mentioned roll is effected by pair of lever arms which serve as the support for that roll. Each lever arm is operatively attached to an overcenter toggle structure which is actuatable either by rotary or linear motion of an actuator mechanism.An adjustment device is provided for varying the load applied to the rolls.

Abstract: An apparatus for the clearance-free mounting of at least one of the rollers in the support column of a calender. The mounting is for producing plastics material films achieved by means of a roller bearing which is divided into three, a central section or ring and two laterally outer sections or rings in a direction transverse to the major axis of the roller journalled to rotate therein. Each bearing ring or section comprises an inner ring portion, at least one row of cylinder rollers, an outer ring portion and a bearing body portion. Pressure applicator means are provided for displacing the central section relative to the two laterally outer sections or rings in a direction towards and away from the roller journalled therein so as to eliminate play within the bearing. To eliminate the play between the bearing body and the calender support column, an additional pressure applicator means is provided which is incorporated in the calender support column.

Abstract: A calender wherein a permanently installed main roll cooperates with at least one exchangeable roll to provide a nip for the passage of a web of paper or the like. The end portions of the exchangeable roll are mounted in bearings which are insertable into and extractible from sockets provided in levers which are pivotably mounted in the frame of the calender. The calender has a transporting unit which is provided with grippers for the bearings and with motors which reciprocate the grippers to extract the bearings from their sockets after the levers are pivoted to positions in which the exchangeable roll is spaced apart from the main roll. The transporting unit thereupon transfers the exchangeable roll onto a mobile rack which can be transported to a station where the exchangeable roll is repaired.

Abstract: A laminating station includes fixed parts and movably mounted parts, the latter forming, together with a torsion tube and a laminating roller, a parallel rocker. A second laminating roller and a spacer tube are mounted in the fixed parts of the laminating station. The two laminating rollers and under them the torsion tube and the spacer tube are mounted in side walls of the laminating station. The nip between the two laminating rollers is adjustable, and the movable parts are pivotable about the torsion tube, which functions as an axle. The laminating pressure between the two laminating rollers is fixed by means of one or two set screws and associated preset screws. The tips of the set screws press on the preset screws which, surrounded by compression springs, are enclosed in housings which are arranged underneath collars of the movable parts of the laminating station.

Abstract: A tandem calender is provided at the output end of a paper machine which includes two single stack nips in-line. The first nip is formed by a pair of steel rolls which are lightly loaded and the second nip is formed by a steel roll and a plastic covered roll which is loaded 2-10 times greater than the first nip.

Abstract: The present invention is directed toward a controller for controlling the local diameters of a temperature sensitive calender roll by selectively heating sections of a sheet of calenderable material with infrared lamps while the sheet is in contact with the calender roll or before the sheet contacts the roll. The calender roll is made of a material having at least one dimension which responds to changes in temperature. Therefore, thermal expansion of the roll, resulting from contact of the heated sheet with the roll surface, corrects local non-uniformities in the calender roll diameters. If the calender rolls unexpectedly stop or slow down so that the sheet of calenderable material becomes overexposed to infrared radiation, a fire detecting device detects and extinguishes the fire by turning off the infrared heating lamps and flooding the area around the lamps with a fire-extinguishing fluid.

Abstract: The present invention is directed toward a controller for controlling local calender roll diameters by directing temperature controlled fluid against selected slices of a rotating calender roll. The calender roll has a diameter which responds to changes in temperature. Therefore, thermal expansion or contraction, resulting from localized heating or cooling of the calender roll by the temperature controlled fluid, corrects local non-uniformities in the spacing between cooperating calender rolls. The invention conserves energy by recirculating the temperature controlled air.

Abstract: An embossing calender for thermoplastics films in which the film is embossed by passage between an embossing roller and a counter-roller and in which the rollers can be rapidly changed or replaced. This is achieved by providing separate support arrangements for the two rollers, which arrangements permit the respective rollers to be displaced into and out of their working positions. The support arrangement for the embossing roller comprises a support member along which at least one holder for the roller is displaceable between a working position and at least one further inoperative position. This permits the selective positioning of each holder and its associated roller.The arrangement for the counter-roller comprises a support which has a pivotally mounted displacement device associated therewith. The displacement device includes holders.

Abstract: A device 1 for engaging and disengaging rollers rollers 14, 15, which are arranged horizontally in pairs, with the shaft ends 18 of the upper rollers being provided with ball bearings 6 which can be lifted and lowered and are guided in bracket-type guides 7. The webs 3, 4 of U-shaped slide members 17 are guided in friction bearings 2, and said slide members can be shifted to and fro by a shifting path X. The webs 3, 4 are provided with recesses 9, 10, each of which possesses a bevelled edge 5a, 5b. The ball bearings 6 roll along the bevelled edges such that in the engaged position the ball bearings are pressed down in the guides 7 by the upper edges 5b, and in the disengaged position they are raised by the lower edges 5a. The recesses 9 provided in the lower web are staggered with respect to the recesses 10 provided in the upper web 4 by the shifting path X.

Abstract: A lateral end upright for the feeding roll pair in chocolate refining machines is formed by two half-uprights in mutual abutment relationship and individually mounted to one of the feeding rolls. The abutment sides of the half-uprights have a thickness dimension which is selected to ensure continuity thereof even with the feeding roll axles tilted to their full oscillated positions. A flexible insert may be interposed to the upright halves.Offsetting play due to wear can be taken up, as can differences in the working lengths of the feeding rolls.

Abstract: A fabric fusing device is described having a heat box and a conveyor assembly with a continuous belt. The conveyor assembly is floating above the belt at a preselected distance therefrom and may be pivoted from a horizontal, essentially operating position and a vertical position for maintenance. The belt is supported by rollers, one of which is adjustable for rightening the belt and to compensate for variations in the belt's longitudinal dimensions.

Abstract: A system for controlling the pressure applied on the roll bearings of chocolate refining machines comprises, in addition to a linked multi-pressure control circuit, an additional circuit for applying linked single-pressure control, a selector valve enabling switching of one or the other of the operating modes.The dual-function system imparts refining machines with universal operation capabilities.

Abstract: Steaks are grilled, one after the other, while advancing through a passage which is defined by three heated parallel rolls. A first roll is disposed at one side and the other two rolls are installed at the opposite side of the passage. The rolls are driven to advance the steaks downwardly into and through the passage. One of the other two rolls is adjustable at right angles to its axis so that the width of the entire passage can be adjusted.

Abstract: System and method for controlling the caliper of a web of material acted upon by one or more pressure rolls. The caliper is controlled by adjustment of the diameter of the roll, and the roll is locally heated and cooled by a combination of impingement, radiant and convective heat transfer.

Abstract: A device for controlling and monitoring the thickness of a chocolate film delivered by chocolate refiners. The chocolate film thickness is controlled by operation of a roller bearing pressure adjustment system of the refiner by way of cut-in signals from an indirect measurement of the instantaneous chocolate film thickness effected by processing representative colorimetric signals for a given mass of chocolate stock of corresponding thickness values emitted by a readout head. The readout head is arranged to reciprocate to measure the film across its entire width. The readout head also enables the integrity of the chocolate film being delivered to be monitored, that is to detect the appearance on the output roller of dry band areas.In the presence of potential causes of refiner roller seizure, the device, after a presettable time delay, will automatically stop the machine.

Abstract: A calender and method of operating the same, where the calender has a vertical stack of a plurality of rotary rolls, each of the rolls having bearing structure at each opposite end provided with a thrust shoulder cooperative with a stop shoulder on a respective suspension spindle at each end of the rolls. There are guideways for the bearing structures, and there is an arrangement for vertically shifting the rolls between a lowered mode for spaced apart independent suspension by stop shoulders and a raised nipping mode relation with one another. The weight of the bearing structures of the rolls in the raised nipping mode relation is relieved as by cooperating pawl and rack structure.

Abstract: A plastic foam-forming mixture (31), e.g. a polyurethane or polyisocyanurate foam mix, deposited from one or more static dispensers (19) is metered through two spaced opposed members 14 and 18 forming between them a metering gap. At least one of the members is deformable in a controlled manner such that the profile of the metering gap can be variously defined. Reduces "crowning" of foam boards while permitting foam boards of different thicknesses to be made without having to replace metering bars.

Abstract: A positioning mechanism for four column calender machines is disclosed. The mechanism employs an interconnected piston and cylinder arrangement to permit the rolls to be quickly separated and subsequently automatically repositioned. The rolls are supported on a plate assembly movable on a vertically disposed way mounted on the columns. A lost motion arrangement is provided in the plate assembly so that when a paper break occurs or when it is otherwise desired to separate the rolls quickly, the cylinders are released permitting rapid relative movement between the rolls to prevent damage.

Abstract: A drive device for relatively moving a fixing roller and a pressing roller of a copier employs a one-way clutch to brake the rotation of a cam shaft in moving the pressing roller from the fixing roller so as to avoid abrupt rotation of the cam shaft and the attendant noise and possible damage.

Abstract: A calender wherein the bearings for the end portions of the uppermost roll carry pressure transducers in the form of inflatable plenum chambers or hydraulic cylinder and piston units operable to bear against the lower end faces of vertical feed screws which are axially movably mounted in the support to move the bearings through distances of up to 800 mm. The pressure transducers can shift the bearings for the uppermost roll through distances of up to 25 mm, and they are movable transversely of the respective feed screws or vice versa to compensate for manufacturing tolerances, wear and/or unequal stresses. The lowermost roll is normally held at a predetermined level by a pair of fluid-operated motors which urge the respective bearings against the undersides of stops provided therefor on the support.

Abstract: The invention relates to a two roll press having press rolls positioned side-by-side, the axes of which are mounted in bearing housings guided between parallel horizontal guiding surfaces in lateral frame members of the press frame, said guiding surfaces extending each to the ends of said frame members, and connecting frame heads provided in the area of the ends of said frame members, said connecting frame heads forming the abutments for the bearing housings and being detachably connected to said frame members, and being provided with means which enable them to be brought into a horizontal position in such way that one of the surfaces being in vertical position serves as guiding surface in vertical and lateral alignment with the guiding surface of the lower frame member.

Abstract: A calender roll has a hollow cylinder which surrounds or is surrounded by a stationary support. That surface of the support which faces the cylinder has circumferential and axially parallel grooves for the coils of electromagnets which are energizable independently of each other or simultaneously and serve to prevent flexing and/or other deformation of the cylinder when the latter rotates and contacts a running web of paper, textile material or metallic or plastic foil. Those sections of the aforementioned surface of the stationary support which are surrounded by the coils constitute portions of circumferentially extending arcuate or annular pole faces and the polarity of each circumferentially extending pole face is constant. However, the polarities of neighboring pole faces the different, i.e., pole faces which constitute south and north poles alternate with each other, as considered in the axial direction of the calender roll.

Abstract: On-machine supercalender apparatus adapted to be located at the discharge end of a paper making machine of the type which includes hard and soft calender rolls forming soft calendering nips with each other. The calender rolls are arranged in at least three roll groups, each of the calender roll groups consisting of three calender rolls, namely a central hard calender roll and two outer soft calender rolls. The calender roll groups are separate from each other in that the calender rolls of one group are neither directly or indirectly in nip contact with the calender rolls of another group. At least a majority of the soft calender rolls are replaceable during operation of the apparatus without any significant interruption in operation.

Abstract: Calender apparatus for paper or the like adapted to be directly associated with a paper machine and to operate as an on-machine supercalender includes a plurality of hard calendering rolls arranged over one another so as to form a stack of hard rolls and a plurality of soft calendering rolls adapted to define a series of soft supercalender nips with the hard rolls. The hard and soft rolls are mounted on drivable support apparatus whereby the hard nips defined by the hard rolls can be opened and the soft supercalender nips closed in order to accomplish supercalendering operation on a web passing through the apparatus.

Abstract: A mill, particularly a mill for extracting juice from cane sugar, has a fixed top roller (24), and feed discharge rollers (25) and (26) which are independently pivotable by respective power operated means (47, 51) to vary the feed opening between the feed roller and top roller and the discharge opening between discharge roller and top roller. A trash plate (55) for transferring material between the feed opening and the discharge opening is connected to the feed roller for pivotable movement therewith.

Abstract: A calender wherein the end portions of the lowermost roll of the roll train was mounted for movement along vertical guide rails on the stand. The lowermost roll is movable upwardly by two upright hydrostatic cylinder and piston units with plungers whose axes are coplanar with the axis of the lowermost roll. When the cylinder and piston units lift the lowermost roll to operative position, shoulders on the bearings abut against stationary stops on the stand and the stops are disposed only at one side of the common plane of the aforementioned axes so that the bearings tend to jam against the adjacent portions of the guide rails as soon as the shoulders engage the respective stops. The jamming action is enhanced if the stops are remote from the aforementioned plane and if the guide rails have T-shaped heads which are slidable in complementary T-shaped grooves of the bearings. The stops are installed at the level of the axis of the lowermost roll.

Abstract: A paper web treatment device is disclosed, which includes a nip forming roll pair. One of the rolls of the pair comprises a mantle portion rotatable on a central shaft portion. This roll is arranged to be moved in a radial direction for disengagement from the other roll. There are means for producing a mechanically guided rotary motion at both ends of the shaft portion simultaneously with the radial motion of the roll. The shaft portion is used as a rigid member mechanically interconnecting the rotary motions at both ends of the roll, thereby synchronizing the radial motions of both ends for obtaining exact parallel disengagement of the movable roll from the other roll.

Abstract: A plastics foam-forming mixture (31), e.g. a polyurethane or polyisocyanurate foam mix, deposited from one or more static dispensers (19) is metered through two spaced opposed members (14 and 18) forming between them a metering gap. At least one of the members having a plurality of faces of different profile and being rotatable to present to the other member a selected face appropriate to the thickness of foam board to be produced. Reduces "crowning" of foam boards while permitting foam boards of different thicknesses to be made without having to replace metering bars.

Abstract: A sugar cane mill facility for the extraction with imbibition of sugar from sugar cane.This mill is characterized by the fact that it includes a fourth roller placed in front of the upper roller, against which it presses and, above the inlet roller and mounted on a mobile support, means acting upon the said support in order to flexibly push the fourth roller towards the upper roller, adjustable stops hindering these two rollers from coming together, and a trash plate placed between the fourth roller and the inlet roller integral with the said mobile support. The juices extracted by pressure between the upper roller and the fourth roller can be recycled to the bagasse layer feeding the mill, either with the juices which have passed through this layer, or with the juices extracted by pressure between the upper roller and the inlet and outlet rollers.

Abstract: A roll which can be used in a calender to bear upon a web of textile material, paper or the like while the web travels between the peripheral surface of a floating shell of the roll and a counterroll. The shell surrounds a non-rotatable shaft which carries several rows of discrete electromagnets extending in parallelism with the axis of the shaft and along an arc of at least 200 degrees, as considered in the circumferential direction of the shaft. The electromagnets can be energized to a different extent so as to subject the magnetizable material of the shell to forces of different magnitude and to thus counteract the tendency of the shell to undergo deformation in response to the action of forces which act radially of the shell or which tend to impart to the shell vibratory movements. Additional electromagnets can be provided to cooperate with a radially inwardly extending flange at one end of the shell to hold the latter against excessive movements from an optimum axial position.

Abstract: An extended press nip for a paper making machine including a large main roll with end bearings, a pressure shoe having a concave face defining an extending press nip with the roll, an overhead looped felt passing through the nip, a lower looped belt passing through the nip, means lubricating the belt surface facing the shoe, and pivotal supports for the end bearings for the roll with one support being a single pivot and the other support being a double pivoted link and the bearings additionally supported on dowels which accommodate alignment of the bearings.

Abstract: A positioning mechanism for calender machines is disclosed. The mechanism employs an interconnected piston and cylinder arrangement whereby the rolls may be separated quickly and subsequently automatically repositioned. When a paper break occurs or when it is otherwise desired to separate the rolls quickly, the cylinders, by means of a lost motion connection, quickly separate the rolls by a specified amount to prevent damage to the apparatus. A hydraulic circuit maintains the spacing required for the lost motion connection and allows for interchanging of rolls of different diameters.

Abstract: This disclosure relates to a rib-rolling mechanism for processing tobacco ribs and includes a pair of relatively rotatable rollers having peripheral surfaces defining therebetween a throat through which it is adapted to pass tobacco, the rollers having shafts, the shafts of the first of the rollers being journaled for rotation in fixed bearings and the shafts of the second of the rollers being journaled for rotation in movable bearings, a device for resiliently urging the second roller toward the first roller, the latter device including a rod connected to each of the movable bearings, a sleeve in external telescopic relationship to each of the rods, springs coupled between each of the sleeves and the second roller for urging the latter toward the first roller, and elements for axially shifting the rods to vary the force exerted by the springs in a direction to urge the second roller toward the first roller.

Abstract: Apparatus for the compressive handling of a strip of material, especially for handling paper strip in a paper machine, includes a plurality of cooperating horizontal and vertical roller pairs arranged in ascending and/or descending step-like succession and forming compressive zones through which the strip of material passes. Certain rollers are movably mounted so that they may be pivoted away from the compressive zone for replacement during operation of the paper machine. Cable guides are provided for leading the strip through the compressive zones and, owing to the movable mounting arrangement of the rollers, the course of the cable guides through the compressive zones need not be altered when a roller is exchanged.

Abstract: This invention relates to an improvement in an apparatus for developing printing plates comprising pairs of upper and lower rolls adapted to convey said printing plates, bearing means at each end of each upper roll, and toggle lever means adapted to raise and lower said upper rolls with respect to said lower rolls, the improvement comprising a plurality of pivotal forked head means each having an upper and lower arm adapted to engage each of said bearing means, swivel shaft means supporting said forked head means and being parallel to the conveying direction of said printing plates, said upper arms of said forked head means being adapted to exert pressure on the top of said bearing means when said bearing means is in a lowered position, and said lower arms of said forked head means being adapted to support said bearing means in a raised position, means connecting one end of a toggle lever means to each forked head means, and means connecting the other end of said toggle lever means to a rotatable control shaf

Abstract: A grain husker has two decorticating rollers which are accommodated in a housing, one of the rollers being rotatable about a stationary axis, while the other roller is mounted on a carrier which, in turn, is mounted on the housing for pivoting relative thereto in such a manner that the movable roller moves with the carrier closer and farther away from the stationary axis of the first-mentioned roller. A drive for the rollers includes a motor, a driving pulley mounted on the output shaft of the motor, and idler pulley and a driven pulley of the movable roller, all of these components being also mounted on the carrier for displacement therewith, the drive further including a driven pulley of the stationarily mounted roller and an endless element which is trained about all of the above-mentioned pulleys.

Abstract: A sugar mill utilizing an arrangement of rolls journalled between a pair of frame members, having a driven anvil roll as the lowermost roll. An adjustment cane roll is disposed between the frame members above the anvil roll. Intermediate and to one side of the cane and anvil rolls is a crusher/feed roll, and to the other side of the cane and anvil rolls there is a bagasse roll. The three uppermost rolls are adjustable with respect to one another, the side rolls may each be mounted in an eccentric or screw adjustable bearing support arrangement. A generally vertically disposed chute drops chopped sugar cane between the feed and cane rolls to permit gravity to aid in feeding of the chopped cane to the sugar mill. This arrangement of the rolls permits a higher sugar mill output per revolution of the rolls, than that of the prior art.

Abstract: A driving roll stand, in particular to be used in a continuous casting plant, has a pair of rolls, at least one of the rolls being mounted in a rocker; the rocker is pivotably hinged to a stationary stand with one bearing on each roller-end side, and a displacement means for each bearing for displacing the bearing in the pivot plane of the rocker is provided.

Abstract: A die-cutter assembly including a die-cutting roll and an anvil roll between which a web of material is passed for die-cutting of labels. Spacing between the rolls is controlled by a pair of bearings at each end of one of the rolls, each pair including an inner bearing in which the roll is journaled and an outer bearing which is in rolling contact with the die-cutting roll. A rotatable eccentric spacer between the inner and outer bearings provides an adjustment of the spacing between the axis of the cutting roll and the axis of the anvil roll.

Abstract: A pressure-roller apparatus comprising two compression rollers providing a pressure nip therebetween for the introduction of sheets or other thin members to be compressed and fed. The degree of pressure in the nip is variable by means of one or more adjustment roller assemblies comprising adjustment rollers which are substantially shorter in length than said compression rollers and which engage one of said compression rollers at one or more points intermediate its ends to provide an intermediate and balanced pressure adjustment which avoids bowing of said compression roller.

Abstract: Apparatus in a copier fusing assembly for distributing the wear on a hot roll occasioned by the use of variable length copy sheets. This wear is distributed over the horizontal length of the hot roll by reversing the hot roll, end-for-end. Easy reversal of the hot roll is made possible by utilization of a hot roll subframe which is removably mounted in the copier fuser mainframe. A handle on the subframe allows for manual removal of the subframe and hot roll from the mainframe and out of the copier where they are reversed and inserted back into the mainframe.

Abstract: The method maintains a set nip clearance at a uniform value across the widths of the calendar, at different calendar loads, in at least the last nip, in the working direction, of a calender stack or the like including at least three rolls subjected to a common work-press load, with at least one roll being crowned to correspond to the maximum load of the calendar and at least one roll being adjustable. The thickness of the material being treated is sensed at one or several points in a direction transverse to the material web, or the deflection, or the load, is sensed at one or several of the rolls. The position of one or more adjustable rolls is displaced, relative to the common plane through the roll axes, in accordance with the sensing in a manner such that the axis of the adjustable roll or rolls remains parallel to the adjacent roll axis. The adjustable rolls may be displaced horizontally either linearly or arcuately to follow the contour of the adjacent rolls.

Abstract: A handle or knob is connected to laterally position parallel sheet edge guides so that the distance between the guides is equal to the width of a sheet to which a toner image is to be fixed by pressure rollers. The handle or knob is also connected to an adjustable spring assembly which presses the rollers together in such a manner that the spring force acting on the rollers is a function of the sheet width.

Abstract: An industrial-sized briquetting press having two independent bearing housings for supporting the drive shafts of the briquette-forming rolls. One of the bearing housings is rigidly mounted and the other is pivotally mounted to the first by a pivot located midway between the longitudinal axes of the drive shafts. The axes are substantially parallel and the pivotally mounted housing moves in the plane of the axes. The rolls are biased together by hydraulic cylinders. Connecting rods attached to the rigidly mounted bearing housing, slidably passing through the pivotally mounted bearing housing and hollow piston rods of the hydraulic cylinders, and supporting the hydraulic cylinders prevent movement of the briquette-forming rolls in relative longitudinal and lateral directions. The press has no overall frame permitting easy access for repair and maintenance and the pivot is demountable permitting removal of the pivotally mounted bearing housing.

Abstract: A multi-roll calender for rubber or synthetic plastics material comprising a pair of rolls mounted at their ends in a calender stand, in which at each of the ends of the pair of rolls, the pair of rolls are rotatably mounted in a bearing block which can be moved to move the pair of rolls together with respect to the calender stand with the gap between the two rolls of the pair rolls maintained constant, one of the rolls of the pair rolls is displaceable relative to the bearing block and to the other roll by having its end engaged in a mounting member which is displaceable in the bearing block, a fixed screw spindle is secured to the mounting member, a rotatable internally threaded sleeve is secured against axial movement in the calender stand and has the fixed screw spindle engagement therein, a drivable worm wheel is rotationally rigidly connected to the internally threaded sleeve, the internally threaded sleeve carries an electromagnetic coupling which can be energised to entrain a spur gear for rotation wi

Abstract: A conveyor belt drive assembly embodying a supporting frame extending transversely of the belt. A pair of transverse drive axles mounted in the supporting frame are spaced from each other in the direction of belt travel. Drive wheels on the drive axles engage the under surfaces of the edges of the upper strand of the belt and the upper surfaces of the edges of the lower strand. A resiliently mounted rotatable support engages the under surfaces of the edges of the lower strand opposite the drive wheels with the lower strand pinched therebetween. A floating frame operatively connected to the supporting frame is movable relative thereto. Upper wheels carried by transverse axles on the floating frame engage the upper surfaces of the edges of the upper strand opposite the drive wheels with the upper strand pinched therebetween.