Abstract: An apparatus is disclosed for transferring a threading tail of a web from a press section to a dryer section of a papermaking machine. The apparatus includes a press roll for releasably supporting the web and a doctor blade which cooperates with the press roll. A tail cutting device is disposed upstream relative to the blade for cutting the tail from the web. A lead-in roll is disposed adjacent to the press roll. The lead-in roll includes a suction tail box which cooperates with the tail. A device moves the lead-in roll from a first to a second location with the first location being in close proximity to the press roll such that when the tail box is connected to a source of vacuum, the tail is drawn away from the press roll onto a dryer felt extending around the lead-in roll. The second location is spaced from the press roll such that an open draw is established between the press roll and the lead-in roll.

Abstract: A paper tailing device accommodates automatic transfer of an initial portion of a paper web across a gap in a paper making machine during guiding of the initial portion through the machine. The paper tailing device comprises a pair of brackets, one on each side of the gap and each carrying a pair of sheaves over which carrier ropes extend. During guiding of the initial portion of the web through the machine, a side edge of the web is gripped between the carrier ropes, and at the sheaves, the ropes define an outgoing nip on one side of the gap and an incoming nip on the opposite side. To transfer the leading end of the web across the gap, the brackets are moved close together in the gap to place the nips in close facing relationship, so that as the leading end of the web exits the outgoing nip it is automatically introduced into the incoming nip.

Abstract: A method and apparatus for automatically threading a traveling web strip, such as a so-called paper tail in a papermaking machine, utilizes a doctor for doctoring the web strip from the surface of a roll. A stream of compressed air is projected against the oncoming web strip in the vicinity of the point where the doctor blade contacts the web on the roll and urges the oncoming web off the roll surface upstream of the doctor. A foil is brought into proximity with the outer surface of the web spaced over the roll to urge the strip outwardly and against a serrated knife to sever the web strip against the force of its momentum. The severed end of the web strip is then guided onto a plate for conveyance into a downstream section of the machine for further processing.

Abstract: A system for sensing a web break using web break detection instruments. Upon sensing a break a strategically located, full web width deflection cam bears against the machine web upstream of the detected break. Under the bias of the deflector, the web running route is pushed into a saw-toothed cutter blade. Saw-tooth points simultaneously penetrate the web along a line traversing the full web width. Such line of web penetration becomes an immediate line of full width web breakage but at a location along the machine length designed to accommodate the waste production (broke) until web continuity along the remainder of the machine length is restored.

Abstract: Apparatus for conveying a web lead-in strip in a paper machine in a controlled manner includes a conveyor belt arranged in a loop around one or more reversing rolls, the conveyor belt being formed of an air-pervious fabric. Devices are arranged within the loop of the conveyor belt for creating a dynamic vacuum on the belt run on which the lead-in strip is conveyed to cause the lead-in strip to adhere to that belt run. The devices comprise guide plates associated with respective air distributing headers which direct air jets over the guide plates. The guide plates are arranged substantially parallel to the plane of the conveying run of the belt in a manner such that a dynamic vacuum is created which acts on the conveying run to cause the lead-in strip of the web to adhere to the conveying run of the conveyor belt. The apparatus is lightweight and compact in construction and permits the lead-in procedure to be automated to such an extent that no manual operations are required.

Abstract: An improvement in apparatus for guiding a web leader from a press section to a drying section of a paper machine, the apparatus including flexible guide ropes forming a gap into which the leader is shifted, an initial air blow device for guiding the leader towards the drying wire of the drying section, a first blow member for detaching the leader from the drying wire and a second blow member for applying transversely directed air jets onto the leader to shift it into the gap formed by the guide ropes. According to the improvement, the second air blow device includes a blow member which is mounted for pivotal movement between a non-operating lateral position outside of the edge of the drying wire and an operative position in opposed relationship thereto.

Abstract: A paper machine where the press section features exclusively double felt roll presses (13-16; 23-26) through which proceeds the paper web (10) to be dehydrated between two felt belts (15,16; 25, 26). The paper web (10) is constantly supported by a backing belt (34) at least in the first drying group of the drying section. The transition of the paper web (10) from one roll press to the next and from the press section to the drying occurs without an open draw. The first drying cylinder (31) is located outside the backing belt loop (34), with the paper web (10) proceeding across the upper cyliner area of this drying cylinder (31). The entrance point of a rope carrier (45,46) (serving to thread the paper web into the drying section) is located behind the leaving point of the paper web (10) from the first drying cylinder (31).

Abstract: In a method for guiding the leader of the web in the drying section of a paper machine, a narrow leader is cut out of the full-width web by water jets, or the equivalent, such as, for example, against a roller of the press section. The leader is guided by a plurality of air jets into a gap between threading ropes and is carried between the threading ropes over drying cylinders. The leader is detached from a rock roller of the press section by a first plurality of air jets and is guided by a second plurality of air jets into connection with a drying wire in the drying section of the paper machine. A third plurality of air jets are directed through the drying wire to the leader supported on the drying wire and detach the leader from the drying wire. Substantially immediately upon detachment of the leader from the drying wire, transverse air jets are directed at the leader and shift the leader into the gap between the threading ropes and move the leader between the threading ropes over the drying cylinders.

Abstract: A threading system for threading a lead end of a web along a processing path in a papermaking machine includes an endless looped belt having a fabric base and a soft elastomeric outer surface with a transversely extending gripping slot in the surface. The slot has a round at the base and the sides of the slot are pinched together when the carrier belt extends along a straightline and with the sides separating when the carrier belt is wrapped over a roll so that the lead end of a web can be gripped in the slot for threading a web and automatically released when the sides of the slot are separated as the belt is wrapped over a roll.

Abstract: Apparatus and method for insulating wires with pulp are disclosed wherein wires embedded in pulp ribbons supported upon an endless transfer belt are passed through radio-frequency electromagnetic fields generated by oscillators tuned to resonate at a high voltage level whenever a wire is not present and thereby energize a wire break alarm.

Abstract: A continuously advancing tissue paper web is separated from a Yankee dryer roll and creper, and then received and transported on an endless fabric conveyor and embossing belt travelling toward and over a reel drum. At the reeling station the web is threaded onto a reel spool and wound into a parent roll pressing against the conveyor and embossing belt running over the reel drum and thereby embossing the web in the roll/drum nip. Means are provided for automatically air threading the web onto the reel spool. For higher bulk tissue creped sheet, additional dry embossing may be effected while the sheet is being transported by the conveyor belt.

Abstract: Disclosed herein a web-treating system equipped with web-threading apparatus having as principal structure, pulleys in endwise coaxial relation with web-conveying rolls, an endless drive cable extending over the pulleys, and a web-tail gripping device with transversely elongate elements thereof supported in the web path by the drive cable. Such elements and the pulleys are especially constructed to engage in an interlock condition as the elements traverse portions of the web path around the rolls so as to prevent the elements from centrifugally swinging away from the web path.

Abstract: A filter cigarette making machine wherein the web which is to yield adhesive-coated uniting bands is flexed by a curling device before it reaches the paster. The curling device is rigid with or is movable relative to a supporting device which is mounted in the frame of the filter cigarette making machine. A safety device can be activated to disengage the web from the curling device during starting of the web and/or to temporarily disengage the web from the curling device when a splice in the web approaches the curling station. The safety device has a rod which can bodily disengage the web from the edge of the curling device or a shaft which can rotate the supporting device to thereby move the curling device out of the way.