Abstract: A double filter for detachably coupling a first filter and a second filter together in a layer like fashion wherein the first filter includes a first filter media with a rigid member about its perimeter and the second filter includes a resilient sleeve about the perimeter of a second filter media whereby the sleeve and accordingly the second filter is capable of being stretched over the rigid member so as to detachably couple the second filter to the first.

Abstract: A sanitary fan spray nozzle is disclosed together with its method of manufacture. The nozzle includes a passage extending from the interior surface of the tube to an exterior surface thereof. The passage has a relatively large diameter for a portion thereof between the interior surface of the tube and a point within the tube walls. The passage then narrows and is intersected by an arcuate groove having a lengthwise dimension which is substantially parallel to the longitudinal axis of the tube. The width of the arcuate groove is smaller than the diameter of the larger portion of the passage. The nozzle is formed by a method which includes drilling a pair of diametrically opposed small pilot holes through the tube, drilling completely through one of the pilot holes and a portion of the opposing hole with the bit having a larger diameter than the pilot holes. An arcuate groove is then cut within the exterior surface of the tube. The opposite hole is later plugged.

Abstract: An adjustable orifice fluid knife utilizing a fluid such as air and including a supporting structure adapted to be connected to a source of fluid. A passage network is on the supporting structure terminating in an opening for transmittal of fluid from the fluid source and out of the opening. A nozzle assembly is on the supporting structure in alignment with the opening for directing the flow of fluid therefrom in a controlled high velocity stream capable of acting as a knife. The nozzle assembly includes a fixed plate on one side of the opening at a predetermined angle with respect to the opening. A bar assembly is on the opposite side of the opening and includes an adjustable blade on the bar assembly responsive to adjustment structure to be angularly shifted with respect to the opening and the fixed plate to a variety of different positions along its length thereby providing for a range of orifice sizes along the length of the blade in alignment with the opening for passage of fluid therethrough.

Abstract: A shower for use in conditioning of felt or wire fabric in papermaking utilizing a two position nozzle. One position is a spray position and the other position is a purge position with the two positions being determined by the relative location of an interior piston with respect to a surrounding tubular body having a valving member at the upper end thereof. The size of the opening created by shifting the position of the piston relative to the valving member determines whether or not a spray or a purging flow passes from the nozzle.

Abstract: A suction box cover for a Fourdrinier papermaking machine includes a leading portion having a top surface which supports a travelling Fourdinier fabric. The leading portion has a channel across its length which includes a lower manifold region and an upwardly projecting throat region that opens upon the fabric supporting surface. A lubricating fluid is fed to the manifold region and flows upwardly through a series of orifices in a metering member retained within the channel to the fabric supporting surface to lubricate the fabric.

Abstract: A shower for use in fabric conditioning in paper making utilizing a two position nozzle. One position being a spray position and in which the nozzle is maintained in this position by normal liquid pressure in the spray pipe and a second position which is a purging position and in which the nozzle is maintained in this position by application of air pressure.

Abstract: A bearing lubrication system for a bowed roll of the type having a series of spools disposed for rotation about a shaft is provided. Each of the spools is supported on the outer race of a bearing, the inner race of which is secured to the shaft. The system includes a lubricant reservoir and a plurality of lines extending from the reservoir along the shaft to fittings mounted on the side walls of the bearings.

Abstract: A filter device particularly directed to the straining of materials for coating paper products which device is provided with a tapered baffle element to particularly aid in the back flushing of the filter to provide cleaning thereof and said baffle having a plurality of arcuately spaced fin members thereon for supporting of a filter element thereabout. This filter element is formed of a replaceable material having a plurality of apertures therethrough which material is normally non self supporting and which material gains its filtering support and positioning by the finned structure which will support the filtering element in both the normal filter operation and the back wash operation.