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 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: 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: 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.