Abstract: An apparatus and method for joining webs has clamp assemblage which includes a pair of clamp members for securing and moving a trailing end of an expiring web into a spaced relations with the leading end of a fresh web. An actuator moves the clamp members securing the expiring web along guide rails to a predetermined position for setting the gap width between the ends of web.

Abstract: An original roll positioning device sets a position of an end face of a new roll at a predetermined reference position. An end pull-out device sucks and pulls out the leading end of the new web from the positioned new roll at a predetermined length. A pair of roll-up chucks of an end roll-up device holds both sides of the leading end of the pulled-out web, and the roll-up chucks are rotated to roll up the leading end of the web at a predetermined length. A suction box sucks the web at a part between the roll up chucks and the roll, and then a cutter cuts the web along the width of the web to form a splicing part. The splicing part is sucked by the suction box, and the spliced part is made to wait in this state until the start of the splicing operation.

Abstract: A hand held tool for facing and joining the ends of opposed lengths of plastic pipe in axial alignment has a generally horizontal body and a generally vertical fixed handle extending from the body. A cylindrical shaft is supported by the body perpendicular to the fixed handle. A fixed pipe clamp is supported by the body by which a first length of plastic pipe can be removably secured. A moveable pipe clamp is slidably supported by the shaft by which a second length of plastic pipe may be secured. A moveable handle is pivotally supported to the body, the handle having a first portion in engagement with the second pipe clamp and a second portion extending in a plane of the fixed handle so that the second clamp can be manually moved towards the fixed clamp. A facer is removably positionable on the hand held tool between the fixed and moveable clamps, the facer having a cutter body having a cylindrical opening therethrough. A cutter holder is rotatably supported in the cylindrical opening.

Abstract: An apparatus and method for setting a gap between webs has a clamp assemblage which includes a pair of clamp members for securing and moving a trailing end of an expiring web into a spaced relations with the leading end of a fresh web. An actuator moves the clamp members securing the expiring web along guide rails to a predetermined position for setting the gap width between the ends of web.

Abstract: A film joining apparatus includes a first transport path (31) along which an old film (12) is transported and onto which a new film (15) whose leading end has been taken out is set, a second transport path (32) which is connected to the first transport path (31) and along which the old film (12) is transported, and a branch path (34) which is branched from the first transport path (31) and the second transport path (32) at a connecting section (33) therebetween. The apparatus further includes a heat fusion unit (40) disposed at the branch path (34) to join the tail end of the old film (12) and the leading end of the new film (15) by heat fusion, and a blower (39) disposed facing the connecting section (33) and adapted to jet an operating gas. The leading end of the new film (15) is introduced into the deepest portion of the branch path (34) in advance.

Abstract: A machine for cutting and fusing plastic plates includes a feeding means for feeding the plastic plates toward a first compressing device having a first supporting plate being flush with the feeding means, a first compressing plate controlled by two first cylinders disposed beside the first supporting plate, a cutting device disposed above the first compressing means and having a disk blade driven by a motor, the disk blade is moved with a belt movably reeved around pulleys disposed to a frame so as to cut the plastic plate fed by the feeding means. A second compressing means is movably connected to the first supporting plate and has a second supporting plate being flush with the first supporting plate and a second compressing plate which is connected to two second cylinders disposed beside the second supporting plate.

Abstract: A machine for processing raw material plates includes a feeding assembly, a first transportation assembly for moving raw material plates to a front clamping assembly which is used to clamp a first raw material plate for subsequent cutting of an irregular front end of the first raw material plate by a front electric heating assembly. The machine further includes a movable table device for moving the first raw material plate to a rear clamping assembly for subsequent cutting of an irregular rear end of the first raw material plate by a rear electric heating assembly. The rear electric heating assembly has a further function for fusing the cut front end of the first raw material plate to a previously fused material web before the cutting of the rear end of the fused material web. A second transportation assembly is provided to feed the first raw material plate to the rear electric heating assembly.

Abstract: A method and a device for joining rubber sheets. A pressing disk having a shape that a cutting disk is cut at an edge thereof by about 0.7 mm to 1.0 mm joins with pressure edge parts of unvulcanized rubber sheets which are stackably aligned with one another and clamped. The cutting disk cuts the joined edge parts of the rubber sheets. Another pressing disk having a shape that the edge of the cutting disk is cut by about 0.7 mm to 1.0 mm is moved on the cut edge parts along the cutting line in the same manner as the cutting disk, thereby securely joining the joined parts by pressing them again.

Abstract: An apparatus for forming a butt seam between opposed edges of resiliently compressible fabric sheets, such as foamed neoprene for wet suits and dry suits. The apparatus includes fabric manipulating assembly which continuously compresses the sheets proximate and inwardly of the edges, preferably by a roller assembly, to form opposed shoulders or areas that will permit the application of a lateral force to firmly press the opposed edges of the flexible and compressible sheets tightly together during movement and bonding along the seam. The apparatus preferably includes adhesive activation means in the form of an ultrasonic transducer which contacts the neoprene pieces in advance of compression rollers to activate a dry neoprene cement carried on the edges of the fabric pieces. A method for forming the butt seam is described, as are alternatively adhesive activating assemblies and a seamed neoprene fabric sheet.

Abstract: A belt splicing tool for thermally joining first and second ends of thermoplastic belts. The tool includes a position control means and first and second clamping mechanisms cooperatively engaged and diametrically opposed along a longitudinal axis. The first clamping mechanism holds a first end section of a belt and the second clamping mechanism holds a second end section of a belt. The position control means repositions the clamping mechanisms relative to one another along the longitudinal axis between a first position where the longitudinal spacing between the clamping mechanisms is minimized, and a second position where the longitudinal spacing between the clamping mechanisms is maximized. The tool retains and aligns both belt ends in an opposed abutting relationship while permitting longitudinal movement of the belt ends relative to one another.

Abstract: A non-alternating lap splicing apparatus for successively splicing rolls of web material is enclosed in a bifurcated housing with a separate access door for each of two compartments therein. There is a driven spindle in each of the compartments, each for supporting a stock roll of web. There is a separate film inlet path for each of the stock rolls. An oscillator assembly having a cutting knife and an ultrasonic horn means is mounted in the housing. The web outlet path is through the oscillator assembly. When one of the rolls is nearly spent, that roll is automatically stopped and the web is cut by the knife to create a trailing end. The oscillator assembly then pivots to align with the film inlet path for the stock roll within the other compartment. The lead end of the new stock roll is automatically positioned under the trailing end of the spent stock roll and the ultrasonic horn bonds the webs together. The overlapping lap of the splice is always trailing and on the same side of the web.

Abstract: An input festoon is provided in a web supply apparatus for automatically splicing a relatively stiff web of material such a liner board for making corrugated board. The input festoon includes a dancer roll which is movable along a track to allow storage of a ready web as the ready web is pre-accelerated by an accelerator roll to a running speed prior to creation of a splice at a splice head. Tail grab sensors are mounted on the apparatus above the web between the input roll and the splice head adjacent the input roll. The tail grab sensor detects tears or breaks in the web and provides an electrical signal to initiate a splice. A vacuum box including a pivotable vacuum bar is provided for creating a high speed butt splice. A method of creating a high speed butt splice using the vacuum box is also presented.

Abstract: A film splicer is provided in which in connecting a first film (12) and a second film (15) to each other, a residual portion cannot be formed rearwardly of a connection point of the first film (12). The film splicer includes a pair of clamping means for clamping the first and second films (12 and 15), at least one heater (67) for heating both the films (12 and 15) for heat-sealing thereof in a state in which both the films (12 and 15) have been clamped by the clamping means, and at least one cutter (71, 72) for cutting at least one of the first and second films (12 and 15) in a state in which both the films (12 and 15) have been clamped by the clamping means. The film splicer further includes a pair of arms disposed advanceably and retreatably, and the clamping means, the heater (67) and the cutter (71, 72) are mounted to each of the arms. Thus, a residual portion left rearwardly of the connection point of the first film (12) is cut away by the cutter (71, 72).

Abstract: A method for making a two-tone vinyl skin cover for an automotive interior trim panel is provided including heating a first vinyl skin to a working temperature; heating a second vinyl skin to a working temperature; stretching the first vinyl skin over a first male vacuum mold, the first mold having a first welding blade along a translationally separable part line; applying a vacuum via the first mold to the first vinyl skin; stretching the second vinyl skin over a second male vacuum mold, the second male mold having a second welding blade along a translationally separable part line aligned with the translationally separable part line of the first mold; applying a vacuum via the second mold to the second vinyl skin; heating the first and second vinyl skins through the first and second welding blades; and abutting the first and second welding blades together under a pressure force to heat weld the first and second vinyl skins together until such time as the first and second vinyl skins are welded to one another

Abstract: An auto-splice device includes a cutting conveyer on which a sheet is cut to produce a fabric, a vacuum take-out unit for taking the fabric from the cutting conveyer onto a take-out conveyer, and a splice mechanism for splicing the fabric to another fabric on the take-out conveyer. A sheet end position measuring unit controls the location at which the fabric is held by the vacuum take-out unit.

Abstract: A sheet material butt-joining apparatus provides improved joining strength and accuracy between starting and finishing ends (S1, S2) of a sheet material S, by keeping the distance between these ends (S1, S2) of the sheet material (S) at a predetermined value by means of a control pin (63). A motor is continuously operated even after the starting and finishing ends (S3, S4) of the sheet material (S) are held by top and bottom joining pawls (48, 49, 36, 37). In this instance, a cam follower (95) moves in a slot (94) to temporarily stop transfer of a vertically moving force to a vertically movable base (26). On such occasion, the control pin (63) is lowered and retracted from an intermediate position between the starting and finishing ends (S1, S2) of the sheet material (S) to form a gap between these ends (S1, S2). The starting and finishing ends (S3, S4) held by the joining pawls are prevented from deformation or the like.

Abstract: An auto-splice device includes a cutting conveyer on which a sheet is cut to produce a fabric, a vacuum take-out unit for taking the fabric from the cutting conveyer onto a take-out conveyer, and a splice mechanism for splicing the fabric to another fabric on the take-out conveyer. A sheet end position measuring unit controls the location at which the fabric is held by the vacuum take-out unit.

Abstract: A tape joining apparatus comprises a transport device for transporting a preceding tape via a joining station, a fixed holder disposed on one side of a path of transport of the tape at the joining station for releasably holding the leading end of a subsequent tape with an adhesive applied to the leading end so as to oppose the leading end to the preceding tape, a movable body disposed on the other side of the path and positionable at the joining station as a lower limit of stroke thereof, a movable holder supported by the movable body and movable in a direction orthogonal to the path for holding the rear end of the preceding tape at an upper limit of stroke of the body and releasing the preceding tape at the lower limit, and an assembly for pressing the movable holder against the fixed holder at the joining station. The transport device has a movable guide roller attached to the movable body for the preceding tape to be passed therearound.

Abstract: A machine for processing raw material plates includes a feeding assembly, a first transportation assembly for moving raw material plates to a front clamping assembly which is used to clamp a first raw material plate for subsequent cutting of an irregular front end of the first raw material plate by a front electric heating assembly. The machine further includes a movable table device for moving the first raw material plate to a rear clamping assembly for subsequent cutting of an irregular rear end of the first raw material plate by a rear electric heating assembly. The rear electric heating assembly has a further function for fusing the cut front end of the first raw material plate to a previously fused material web before the cutting of the rear end of the fused material web. A second transportation assembly is provided to feed the first raw material plate to the rear electric heating assembly.

Abstract: An apparatus for joining the ends of belt-shaped members. The apparatus includes first and second transporting devices, a positioning device, and an end affixing device. The first and second transporting devices extend and retract in the longitudinal direction of the belt-shaped member, and transport the belt-shaped members in the longitudinal direction thereof. The positioning device stops the transport of the belt-shaped members and positions the belt-shaped members as opposing ends of the belt-shaped members on the first and second transporting devices being driven abut against the positioning device. The end affixing device joins the aligned ends of the belt-shaped members. Accordingly, the apparatus for joining the ends of belt-shaped members properly positions and joins the opposing ends of the belt-shaped members on the first and second transporting devices.

Abstract: A vacuum forming mold has a plurality of dies with at least one die being movable with respect to the other dies. The die can be movable in a linear direction or they can be movable in both a linear and angular direction. A plurality of plastic sheets are heated and placed on a respective die with a vacuum being supplied through the dies to attract the plastic sheet. Once formed, the dies are moved together to create a seam bond between adjacent pieces of plastic sheets. Additional heating can be supplied to insure an adequate seam bond if required. In another embodiment, a single sheet of material composed of a plurality of sheets of material is used. The single sheet of material has a plurality of preseamed areas connecting each of the individual plastic sheets. These preseamed areas are positioned inbetween adjacent dies of the plurality of dies and the process continues as described above for the multiple sheets of material.

Abstract: A sliding box for placing a film of insulating or draining material within a trench has a front section for receiving a roll of film and a rear section for delivery of the film into the trench. Between the front section (2) and the rear section (13), the box has a connecting chamber (4) provided at each end with a pair of rollers (5-6, 7-8) mounted within said chamber by means for varying the lateral spacing of the rollers of one and the same pair between an active position in which the two rollers grip the film (3) and a position of relative withdrawal in which the film passes freely between the rollers.

Abstract: Bevelled end edges (37, 38) of gasket lengths (21, 36) are fused into miter joints (39) at corners (18) by welding apparatus having jig and clamp sets (64) on plates (49, 50) that are mounted on rails (59, 60) and separated by cam followers (81, 82) which interact against the bias of a spring (87) with a cam (88) which is rotated by a handler (93) on a shaft (73) to set the spacing of the sets (64). End edges (37, 38) are aligned in the spacing gap (54) against surfaces (185, 186) of a sissy bar (180) which is lifted up when the cam (88) is turned to its position of longest spacing. The bar (180) is then lowered and a heater block (29) is moved and locked into an advanced position within the gap (54) pulling a handle (115 of a rod (116), by spring finger (122) which shifts onto a lockwheel (125). The cam (88) is turned to an intermediate spacing position to melt the edges (37, 38) against the block (79), and then moved to a shortest spacing position to fuse the melted edges together.

Abstract: To correctly splice two films to each other in the end-to-end relationship, a film splicer includes as essential components a base platform, a film guide mechanism arranged on the base platform, an arm member adapted to be turnably depressed against the upper surface of the film guide mechanism by actuating a handle for a cutter holder, an adhesive tape feeding mechanism, and a pair of tape cutters arranged on the lower surface of the arm member for cutting an adhesive tape in a film splicing operation region corresponding to the width of each film to be spliced. The adhesive tape feeding mechanism is composed of an adhesive tape unrolling member, a holding member for temporarily holding the foremost end part of the unrolled adhesive film, and an opposing pair of adhesive tape folding-back members for folding back the unrolled adhesive tape at a predetermined position in front of the film splicing operation region.

Abstract: For the continuous formation of bags for containing bulk materials--in the form of granules, powders and the like--the end of the web (EN), from a new bobbin (BA) in readiness, is laid, with the surface to be welded on the outside, around a welding bar (18) carried by a movable element (12), and the bar (18) is positioned opposite a counterbar (20), along which the web (N) being exhausted from the previous bobbin (B) runs; bar and counterbar are brought close to one another to carry out transverse welding and cutting, in such a manner that a superimposed and welded edge (BS) emerges transversely from the continuous web thus joined, from the surface opposite that of welding. (FIG.

Abstract: A device for selectively connecting and disconnecting plastic tubes includes a welder. A carriage is located in the welder for conveying a heated wafer through the welder. A pair of arms is mounted in the welder with each arm having a tube holding pocket which extends across its respective arm. The arms are movably mounted to generally align the pockets with a gap therebetween. Each of the arms has a clamp for selectively clamping a tube in its pocket. A wafer removal station is in the welder downstream from the arms. The carriage is driven to the wafer removal station so that the wafer first passes through the gap to contact the tubes and then the wafer passes into the removal station so that it may be removed from the carriage and the carriage may be returned to its starting location. The welder includes a computer for controlling the operation and synchronizing the timing of the carriage and the arms to automate the welder.

Abstract: A device is provided for connecting the trailing end of a web of material to the leading end of the following web of material. The web of material undergoes a processing operation downstream from the device. The device includes a frame having guide rollers for determining the travel path for the web of material. Pressure elements are provided in the device which are movable towards and away from each other at right angles to the travel path of the web of material. In addition, cutting elements for cutting through the web of material are also provided. The device can be made wide for interconnecting wide webs of material but it is also compact in structure.

Abstract: The invention relates to a device for cutting, according to a saw tooth pattern, the extremities of veneer tapes between two pairs of upper and under knives and for gluing those extremities under pressure by using i.a. a pression beam on which the necessary pressure is applied by a hammer of an oscillable press and which, for that purpose, is beared in a vertically displacable bridge, characterized in that the device comprises the following elements:(a) means for locking the hammer (13) of said press with respect to said bridge (2):(b) under and upper knives which cut the veneer tapes at different heights;(c) means for bringing said hammer (13) in its rest position when it is delocked with respect to said bridge (2);(d) a pneumatic cylinder (28) for pulling down said bridge (2);(e) means for neutralizing the pression exerted by springs on the under knives.

Abstract: Known methods and devices for overlap-welding of printing by means of ultrasonics have been developed further to enable problem-free use, particularly with wire printers also having thin wires, and to enable welding of multi-color ribbons. The invention also permits more durable components. In the method according to the invention, the printing ribbon to be joined is retained in a non-overlapping fashion on movable plates, preferably by means of a vacuum, and is severed by a cutter, preferably by means of an ultrasonic sonotrode and cutting anvil, and is then moved so that the ribbon ends are in overlapping position, and then welded, preferably with a structured part of a sonotrode on a wielding anvil which is likewise structured. A device according to the invention has two plates with ribbon-retaining means, a cutter, and a joiner, such as a welder, for joining the two ribbons ends. The plates are movable to at least two positions suitable respectively for the cutting and joining functions of the machine.

Abstract: Device for joining of tubular parts (10, 11) made from plastic, especially polyvinylidene fluoride, polypropylene or polyethylene, in which aligned parts (10, 11) exhibiting about the same diameter are pushed together and are welded on abutting surfaces (12, 13) by effect of heat. Abutting surfaces (12, 13) of tubular parts (10, 11) in the direction of the inside pipe space are undercut or recessed so that the edge formed by inside surface (15) of tubular part (10, 11) and the abutting surface springs back opposite the edge formed by outside surface (18) of tubular part (10, 11) and abutting surface (12, 13), and so that parts (10, 11) in the area of abutting surfaces (12, 13) in the axial direction essentially are softened equally deeply, then pushed together and, as a result, are welded together. Especially wherein the heating element (20) consists of a fixed disk (23') and a heating ring (23") of metal with a PTFE-ring (21') which may be additionally fixed.

Abstract: A device for splicing paper webs for the manufacture of corrugated board. At least one pressing and redirecting roller is provided to receive the terminating web to be spliced from a web roll. Two clamping rollers, which function in an alternating manner, grasp the terminating web from the web roll. The clasping rollers are moveable from their initial positions to operating positions. A clamping beam, which functions in an alternating manner with one or the other clasping rollers, includes pressing faces disposed oppositely facing each other, there being one beam for each of the clasping rollers. Each clamping beam has a pressing face for pressing the web which runs across it. Two breaking beams alternatingly cooperate with the upper side of the clamping beam for one or the other clasping roller to bring the terminating web to rest. Two alternatingly functioning knives act to cut off the web which is played out.

Abstract: A cassette tape loading device comprised of a cassette holding means for holding a cassette case, a tape supplying means for supplying a magnetic tape, a first splicing block means for releasably holding a leading end of the magnetic tape, a leader tape drawing means for drawing out leader tape from the cassette case, a second splicing block means for releaseably holding the leader tape, a third splicing block means for releaseably holding a cut end of said leader tape or a cut end of said magnetic tape, a first cutting means for cutting the leader tape held by the second and third splicing block means between the second and third splicing block means when the third splicing block means combines with the second splicing block means, a second cutting means for cutting a magnetic tape held by the first and third splicing block means between the first and third splicing block means when the third splicing block means combines with the first splicing block means, splice means for splicing both the cut end of said

Abstract: A method for producing a biased belt sheet includes the steps of cutting a longitudinally extending rubbered strip, having a number of cords embedded therein extending parallel to the longitudinal direction of the strip, at a desired angle with respect to the longitudinal direction into unit sheets of a desired length, each being in the form of a parallelogram, on a cutting conveyor by cutting means, transferring in turn each unit sheet from the cutting conveyor to a sheet joining conveyor by holding means and transfer means, positioning the unit sheet so that the cut edges of the unit sheet become parallel to the moving direction of the sheet joining conveyor, and adhering the forward end of the unit sheet to the rearward end of the preceding unit sheet to form a continuous belt sheet of biased cord material.

Abstract: A splicing device for label webs mechanically holds the leading end of the new web and is rapidly transferred to splicing position and accelerated into the running speed of the web while the rotational speed of the web supply spool that is associated with the leading end of the replacement web is initially gradually adjusted to the running speed of the label web. The leading end of the replacement web and the trailing end of the expiring web are glued in an overlapping manner. The splicing device has two identically constructed multi-functional drums which are arranged to function alternately and are equipped with a gripper, cutter, free running deflector roller and pressure application device.

Abstract: A method for controlling an automatic sheet connecting and feeding apparatus in which folded sheets, each of which is folded zigzag in the form of a stack of sheets, are conveyed successively by a plurality of conveying means to a processing means. In order to connect the bottom sheet of a first one of the folded sheets to the top sheet of a second folded sheet following the first folded sheet the top sheet is lifted with a suction device. The step of lifting the first folded sheet includes the steps of pushing the suction device against the top sheet to suction and retain the top sheet, moving the suction device in parallel with the surface of the top sheet and moving the suction device in a direction perpendicular to the surface of the top sheet.

Abstract: An apparatus for connecting strips, in which a rear end portion of a preceding strip and a front end portion of a succeeding strip are cut and brought into contact to each other so that a butt welding of the contacted portions may be carried out to connect both the strips. A carriage is provided for carrying a cutting device for cutting the end portions of both the strips. A finish-machining device is provided for finish-machining the cut end faces of both the strips and a welding device for butt welding both the strips along a contacting line of both the strips is installed so as to be movable in a line substantially parallel with the contacting line of both the strips. Die wears and burrs incidental to cut faces can be prevented from forming and the highly accurate contacted state of strips can be achieved, thereby improving the quality of the welded portion.

Abstract: An automatic paper feeder automatically couples a plurality of pieces of folded long paper to each other and then continuously feeds the pieces. A conveyor, a reference surface, a pusher and a drive unit are provided in the feeder. The conveyor has a larger width than the long paper and is made of a material of low friction so as to convey the long paper. The reference surface is located near the side edge of the conveyor. The pusher is disposed opposite said reference surface and can be reciprocated toward and away from the reference surface. The drive unit is for moving the pusher. The pusher is moved by the drive unit to push the long paper onto the reference surface.

Abstract: A welding machine for butt welding of plastic profiles is outfitted with profile clamping units (2, 3) capable of sliding in relation to each other, and a heat reflector (15) which can be introduced between the front surfaces of two profiles to be welded, whereby the clamping units (2, 3) comprise weld boundary blades (2b, 2f, 3b, 3f) aligned parallel to the profile front surfaces and mounted on the profiles.In order to enhance welding efficiency and produce precisely coordinated weld joints, the clamping units (2, 3) are designed to accommodate two superimposed profiles (U, O), and feature in addition to the external boundary blades (2b, 2f, 3b, 3f) an intermediate boundary blade (5, 6) insertable between the profiles (U, O), yielding elastically in the clamping direction of the profiles and moving along with the clamping units (2, 3) in the direction of displacement.

Abstract: The described device comprises two primary pliers systems (2, 2a) arranged to engage through respective gripping elements (25, 26) the opposite ends of an elastomeric filler (45) applied on the radial outer peripheral of a bead core (46). The pliers systems are pivoted around an axis spaced from the center of the bead core, with respect to the convergence point of the V-shaped opening formed by the ends of the filler and are angularly moveable upon carrying out their movement, the pliers systems rotate with respect to the other according to an angulation greater than the value of the angle from by the ends of the filler and that the gripping means (25, 26) are shaped in such a way that in a radial outer zone of the filler, the ends are overlapped during the action of the pliers systems. An ancillary pliers system (24) compresses laterally the overlapped ends to effect the final splicing.

Abstract: The invention relates to the butt-welding of pipes of plastics materials. Equipment is alreaady known where pipe ends are first urged against a trimmer plate, and then urged against a heater plate to create beads of a required size at the ends of the pipes, following which the pipe ends are urged into abutting relationship for welding to occur. Particularly with automatic machines employing hydraulic power, the force applied between the pipe ends and the heater plate and subsequently between the pipe ends needs to include an allowance for the drag factor inherent in the pipeline and compensate for any frictional effect in the mechanical and hydraulic moving components, and which is a difficult calculation.

Abstract: Two thermoplastic tubes are welded together by pre-cutting the tubes to create two ends which are axially aligned when placed in a holding device. A wafer is inserted in the space between the cut ends and the wafer is heated to melt the cut ends while the cut ends are in a non-flattened condition. After the wafer is removed the melted cut ends are pressed against each other to weld the cut ends together.

Abstract: A contact heating platen assembly includes an upright central standard, a plurality of inclined linking members pivotally mounted to the standard, and to a pair of opposed platen carriers on opposite sides of the standard, each traversing an arcuate path relative to the standard. Each of the carriers supports a heating platen and an electrical heating element for heating the platen. The carriers are spring biased into a collapsed position against the standard, but movable to an extended position relatively remote from the standard. To complete a fusion bond, a pair of workpieces are positioned on opposite sides of the platen assembly, each with a fusible surface portion positioned to be engaged by one of the platens when the assembly is extended. The assembly is extended whereby the heated platens engage the fusible surface portions. The platens are maintained against the surface portions until they are fused, then allowed to retract or collapse under the spring force.

Abstract: Two thermoplastic tubes are welded together in a process which includes severing the tubes by a severing wafer having a temperature of about 350.degree. F. to create two cut sections. The severing wafer is removed from the space between the tubes and a hot wafer having a temperature of 500.degree.-1200.degree. F. is inserted in the space to radiantly heat the tube ends so that they are welded when pressed-together while in an unflattened and open condition.

Abstract: An apparatus for simultaneously welding two or more pairs of thermoplastic frame elements is disclosed. The apparatus includes a clamp or jig assembly which maintains the frame elements in alignment with respect to each other and to a heating plate. A driving assembly is provided for moving the frame elements towards the heating plate and/or towards each other for heating and fusion.

Abstract: A plastic tube is sealed at its end by placing the tube in a pair of spaced apart tube holders having tube receiving pockets. The tube is cut by a cutting device movable into and out of the space between the pockets to form two distinct tube sections which are melted at their ends while in the clamped condition. The cut ends are then brought into contact with each other in a mis-aligned condition offset by one-half the thickness of a tube wall to seal the tube end.

Abstract: A waterstop splicing method and apparatus including a table having first and second coplanar aligned table top surfaces that simultaneously and equally, open and close by mechanical means driven by adjustable compression springs which provide equal forces to both tops. The table is equipped with two identical clamping arm assemblies in proximate relation to the facing edges of the two table surfaces, with one clamping arm assembly for each side, each of the clamping arm assemblies being provided with a bar having slidably and lockably assembled thereon a plurality of clamp devices, which are individually adjustable for pressure, width and cross-section of the waterstop strips for enabling securing of a waterstop to the table at any desired angle without puncturing. A removable recessed channel is provided in the middle of the table for supporting a thermoplastic welding iron having opposing heated parallel surfaces for simultaneously contacting the ends of a pair of aligned strips.

Abstract: In a rubber-covered cord units joining machine, parallelogram-shaped rubber-covered cord units are joined to one another by overlapping the edges which are in parallel with the cords thereof, thereby to form a belt-shaped rubber-covered cord product. A moving stand is movable in the lengthwise direction (Y-axis direction) and in the widthwise direction (X-axis direction). The stand is provided above a joining table on which the rear end portion of a joined rubber-covered cord unit and a not-joined rubber-covered cord unit are placed in such a manner that the not-joined rubber-covered cord unit is slightly spaced from the rear end portion of the joined rubber-covered cord unit. An end edge chuck for detachably holding the front end edge of said not-joined rubber-covered cord unit is coupled to the moving stand in such a manner that said end edge chuck is movable vertically and rotatable around the vertical axis thereof.

Abstract: Thermoplastic tubes are welded together in a dry condition with the tubes being open and maintained in their undistorted condition during the welding step. In an alternative technique a branch tube is welded to a main tube by placing the tubes in a non-parallel orientation in a holding device. A wafer cuts completely through one tube to form two tube sections. The wafer also cuts a notch from the other tube. One of the tube sections is shifted to become aligned with the notched other tube and welded thereto. A further technique includes placing at least one tube in a holding device which has a false floor for pressing against an area of the tube while the tube is being flattened at two spaced locations on opposite sides of the area. When the false floor is moved away from the tube a partial vacuum results. An air pocket is formed when the tube is severed by a wafer by air flowing into the cut tube.

Abstract: A system for processing fabrics or webs continuously, especially for applying and drying resins or other chemicals on glass fiber cloth. The system includes an upstream-located unwinding unit which comprises a semiautomatic splicing assembly for splicing the terminating or trailing end of a fabric or web coming from an unwound roll to the forward or leading end of a fabric or web on a roll to be unwound. The unwinding unit is followed by a first multiple turn-around and take-up roller set when the fabric or web is transferred to a station of application of a resin or other processing material. From the application station the fabric is fed to a hot air drying kiln, where the resin is dried. Downstream of the processing kiln, there are provided a hot finishing roll assembly followed by a second multiple turn-around and take-up roller set. Finally for the processed fabric or web is wound into a roll by a winding unit.

Abstract: A method and apparatus for splicing a fresh stack of continuous pin-feed forms in a high-speed printer having fed therethrough an expended stock of continuous pin-feed forms, where the printer includes an input station at a recessed area. A slidable tray for supporting the fresh stack is pulled out of the printer, and a splicing station which is hingedly coupled to an upright wall portion attached to the tray is deployed external to the printer for splicing ease. The splicing station includes a spool of splicing tape which is disposed within a locating groove of a controlled depth, the forms being registered on locating pins on either side of the groove for accurate splicing upon pressing them centered on the tape. When the splice is complete, the spliced stack is fan-folded upon the tray, the splicing station folded back against the upright wall portion, and the tray returned within the recessed area.