Abstract: A method for winding a traveling web into a wound web roll supported on a two-drum belt winder having a belt looped over two fixedly mounted support drums. The tension in the belt is adjustable from an initially relieved tension condition where a depression is formed in the belt over the notch between the support drums. A new core is inserted in the depression and is wrapped by the on-coming paper web to begin forming a wound roll of paper. As the wound roll of paper increases in diameter, the tension in the looped belt is increased to provide greater support in the span between the nips of the wound roll over the belt against the support drums. Initially, a rider roll is also brought into nipping engagement with the wound paper roll. The nip load of the rider roll is gradually relieved as the diameter of the wound paper roll increases.

Abstract: A method and apparatus for testing the hardness of wound rolls, such as paper rolls, which yields quantitative information which is reproducible from roll to roll and under various conditions of testing. The apparatus can be operated much like a backtender's stick, to simply strike the roll at a point where hardness is to be determined with a force variable between certain limits as determined by the operator using the stick. The apparatus includes an accelerometer mounted in a striker associated with circuitry for producing signals relating to (a) the energy of the impact between the striker and roll and (b) the peak deceleration of the striker. Those signals are processed to produce a roll hardness measure, which can be correlated to a commonly used Rho scale if desired, and which is repeatable irrespective of the force used by the operator to cause the impact.

Abstract: A urethane covered metal press roll is provided by spray coating the roll body with a quick jelling resin formulation creating isolated small pores giving the cover a stone-like texture. The coating is applied to a desired depth by successive passes of a spray jet over the rotating roll body. The resin quickly jells and after being cured, the cover is ground to a desired diameter and finish.

Abstract: An endless impervious, oil, abrasion and crush resisting belt for paper making machinery such as presses, especially of the extended nip type, calender rolls, and the like has a woven fiber base, such as scrim, and a urethane coating impregnating the base providing an integral layer of substantial thickness with pores forming a granite like finish providing excellent paper release properties. The surface finish of the belt can be modified with subsequent grinding and coating treatments and can be grooved if desired. The belt is formed by looping an endless scrim blanket around driving rollers providing a travelling run which is sprayed with a two component polyurethane coating which quickly gels to accommodate building up of a layer of the desired thickness by controlling the fluid flow and the speed of the travelling run.

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: An apparatus for compensating for deviations in the straightness of the bed of a machine tool including a wire means providing the reference of straightness. In one embodiment, a wire means is tautly mounted along the bed and submerged in oil to help prevent vibration of the wire means to increase the accuracy of the machine tool. A sensor is mounted to the carriage of the lathe and senses the position of the wire in the oil bath and signals a motor means to adjust the position of the machine tool according to deviations in the straightness of the bed.

Abstract: A roller having an improved covering layer and a process for making such. The covering layer has a generally continuous, seamless matrix phase and a generally circumferentially extending open-celled foam structure which is distributed throughout such matrix phase and preferably is coextensive therewith. The process involves the steps of mounting an open-celled, preformed foam layer over roll circumferential portions, depositing a liquid comprising a resin or resin precursor in the foam layer, and converting such liquid into a solid organic resin.