Abstract:
A controlled deflection roll including a rotary tubular roll shell carried on a stationary shaft extending through the roll shell, the roll shell supported on the shaft for pressure engagement along a working face with an opposing member to form a pressing operation, the chamber between the shaft and roll shell being pressurized by fluid induced past a seal between the shaft and roll shell on the oncoming side of the pressure chamber such as by a specially shaped seal having a trailing lip and releasing pressure from the pressure chamber to maintain a predetermined pressure.
Abstract:
A double felted dryer arrangement wherein a web to be dried is held between the felts and guided onto the surface of a foraminous dryer roll whereupon the outermost felt is guided away from the dryer and directed over a hot air blower mounted over the now exposed web carried on the innermost felt on the dryer shell surface. The hot air blowing on the web is complimented by an opposed vacuum chamber within the roll shell to promote improved through air drying web and web stabilization.
Abstract:
A method of and means for controlling internal tension in web rolls during winding thereof onto cores with the aid of winding drums, comprises partially winding the web rolls between the winding drums and a rider roll, backing off the rider roll from the web rolls after they have attained partial diameter, and during continuance of the winding of the web rolls to full diameter applying load-relieving lift to the web rolls through their cores. A lifting device is correlated with the operation of a winder.
Abstract:
An extended nip press for removing water from a traveling web in a paper machine including a press roll with an elongate shoe having a concave surface facing the roll and forming an extended nip therebetween with an endless belt trained over the shoe for passing through the nip and first and second belts passing through the nip with the belt supported by a plurality of guide rolls or by an annular shell having continuous smooth outer surface extending from the outgoing side of the nip back to the oncoming side of the nip with a beam within the shell and a uniform fluid support for the shoe supported on the beam.
Abstract:
A plurality of electrical driving motors for the rolls in cooperative upper and lower tiers of a paper machine dryer section are coupled with respective dryer rolls in what may be a one-motor-to-one-roll relation, the rolls of each tier being wrapped and synchronized by a dryer felt for that tier. One of the motors of each tier is synchronized with one of the motors of the other tier for synchronizing the running speed of each roll tier with respect to the other roll tier.
Abstract:
A paper making machine dryer section and a method of operating and controlling the same, wherein the dryer rolls are freely rotatable and are rotatably actuated entirely by a dryer felt drive. In a preferred arrangement, there are two tiers of cooperatively related dryer rolls over which a paper web to be dried is run in a sinuous path successively around the dryer rolls of the tiers. Each of the tiers has a respective dryer felt running over and guiding and holding the web onto the dryer roll peripheral surfaces in the associated tier. The dryer felts run under tension over guide rollers. In each tier at least one of the guide rollers is motor driven for thereby driving the associated dryer felt. While the felt of each tier effects synchronized running of all of the dryer rolls in that tier, synchronization of the motors of the tiers one with the other is effected by speed regulators connected with a frequency reference and speed control.
Abstract:
An extended nip press for removing water from a traveling web in a paper machine including a press roll wth an elongate shoe having a concave surface facing the roll and forming an extended nip therebetween with an endless belt trained over the shoe for passing through the nip and first and second belts passing through the nip with the belt supported by a plurality of guide rolls or by an annular shell having continuous smooth outer surface extending from the outgoing side of the nip back to the oncoming side of the nip with a beam within the shell and a uniform fluid support for the shoe supported on the beam.
Abstract:
An apparatus and method for making a paper web with a traveling fourdrinier wire and a looped mating wire pressed into the fourdrinier wire along a forming run and a headbox with a slice for delivering stock at the head end of the forming run, the mating wire being supported on rotatable rolls fixedly carried on a frame with the frame supported for pivotal shifting movement about an axis at right angles to the plane of the fourdrinier wire so that the entire carrying unit for the mating wire is shifted to cause it to track properly.
Abstract:
At least one channel in a multi-channel paper machine distributor is maintained in flow velocity slave relation to another of the channels by monitoring the velocity with a pressure transducer of stock flow through the latter channel and by such monitoring controlling the stock velocity in the slave channel.
Abstract:
A steam heated cylindrical dryer drum for continuously drying a traveling paper web in a papermaking machine wherein steam is supplied to the inner cavity of the drum and the shell of the drum has a plurality of circumferential grooves with axially extending rectangular collectors and tubes projecting tangentially from the collectors of resiliently deflectable material biased outwardly toward the shell of the drum with positioning lugs on the free ends of the tubes resting on the ribs to fix their position in the base of the grooves.