Abstract: An improvement in ball-type check valve arrangements including a valve body in which is formed a fluid passageway and a valve chamber communicating through a valve seat in the chamber, a ball in the chamber seated in the valve seat, and a reciprocal retaining member having a head engaging the ball in opposition to the valve seat and a stem extending from the head through the chamber wall opposite the valve seat, the ball and retaining member being reciprocably movable toward and away from the seat.

Abstract: A sanding block structure having storage means for an elongated strip of abrasive material and including a pusher for driving a portion of the abrasive strip over a work piece is shown wherein the storage means for the abrasive strip and the working surface for engaging the abrasive against the work are carried on a cassette structure that is readily separable as a unit from the pusher.

Abstract: Aluminum titanate is disclosed as an additive in coatings for magnetic recording media.

Abstract: A porous refractory object, more particularly a porous silicon carbide igniter is shown, the interconnecting pores and passageways of its body being filled with sub-micron sized silicon carbide particles deposited therein from a slurry coated on the surface of the object, which particles are subsequently oxidized at least on the surface and within the passages or pores in the subjacent surface portion of the body, to provide a protective coating of silica within the pores and on the surfaces of the object to preclude oxidation of the internal phases of the body of the object in oxidizing atmospheres.

Abstract: A saddle type pipe support means attachable to a base. The support is comprised of an inverted V-shaped member, a sling support located at the vertex of said inverted V-shaped member for engagement of a pipe to the support, and a clamping means for securing the pipe to the sling. The leg elements of the inverted V-shaped member include a foot on each element for engagement with and fastening to a floor or base.

Abstract: The performance of a silver on alumina catalyst for the oxidation of ethylene to ethylene oxide is improved by the inclusion, in the raw mix for the carrier of an oxide, or oxide precursor, of zinc, lanthanum, or magnesium in the amount of 7 to 40%, calculated as the oxide.

Abstract: An industrial washing machine has a pair of rows of vertically spaced rotatable rollers for causing fabric to be washed to follow a horizontally sinuous path. Wash water is supplied from above the rollers down onto the fabric. Perforated trays are disposed under certain rollers so that a roller and the perforated tray immediately therebeneath is separated during a washing operation by a run of fabric. The perforated trays are compartmentalized at at least one end with each compartment being bottom perforated and with the bottom perforation of each compartment being staggared inwardly of the tray end relative to the bottom perforation of the corresponding compartment of the tray immediately thereabove so that water passing through each compartment is, where there is no intervening fabric, directed inwardly from the tray ends during its fall until it contacts fabric.

Abstract: A vertical rotary screen printing machine has a rotary printing cylinder in which is housed a combination dye dispensing bar and squeegee arrangement with which is associated a weir which controls dye flow.The arrangement is adjustable, preferably bodily, (a) radially to effect variation in contact pressure between the squeegee and printing cylinder; and (b) rotatably to effect variation in the position of the line of contact of the squeegee relative to the printing cylinder.