Abstract: A symmetrical elastomeric seal for providing a fluid-tight joint in the annular space between the spigot of one pipe and the bell of an adjoining pipe. The gasket includes tapered ribs projecting from an annular web with their peripheries forming a continuous raised rim. The ribs are symmetrically tapered about axially-spaced parallel planes. A clamp may be installed between adjacent ribs to positively secure the gasket on the spigot. The hardness of the elastomer in the web relative to the ribs may vary according to the fluid pressure of the joint.

Abstract: A device, apparatus and method for distribution at a utilization area of fluid maintained adjacent thereto under pressure to thereby effect movement of articles at the utilization area are disclosed. The device includes a thin plate having a plurality of spaced passageways extending therethrough, which passageways extend substantially normal and open to the opposite surfaces of the plate, with at least a portion of the passageways opening into one of the surfaces at different ones of a plurality of spaced displacement therein, whereby the configuration of the displacements and the size and position of the openings therein determine the volume and direction of fluid distributed in the utilization area. The device is particularly useful in an apparatus wherein the device forms the upper surface of an air containment chamber for containment of air under pressure, and wherein articles are moved thereby adjacent to the upper surface, for example in an air table, air conveyor, article single filer, or the like.

Abstract: A generator air-gap flux probe for determining rate of change of flux density includes a resilient support spanning the air gap between the stator and the rotor of a dynamoelectric machine to support radial and/or tangential flux coils stably within a short distance of the rotor. The resilient support permits the portion of the flux probe spanning the air gap to deflect substantially during assembly or disassembly of the machine thereby to permit permanent installation of the air-gap flux probe. In one embodiment adapted to longer air gaps, the flux probe is mounted on a pedestal block installed on a dovetail slot wedge in the stator. This reduces the cantilevered distance which the flux probe must span. A tangential flux coil axis stripe marking the axis of the tangential flux coil aids in alignment.

Abstract: A gasket particularly suited for providing a leak resistant, deflection tolerant seal for a bell and spigot type of pipe coupling is provided. The gasket comprises a rubber web having a plurality of identical sealing ribs projecting radially inward in axially spaced relation. Each rib has an enlarged tapered base portion and a narrow finger portion which inclines inwardly and axially therefrom in cantilever fashion and which terminates in a tip spaced radially from the base of an axially adjacent rib. The finger portions are deflected into engagement with their adjacent sealing ribs when the spigot portion of one pipe is inserted axially into the bell portion of the other in which the gasket is mounted. The sealing ring prevent leakage even when the coupled pipes are misaligned slightly.

Abstract: Organic solvents miscible with water and containing from 2 to 50% of water can be dried by passage over a molecular sieve capable of retaining water after it has been dehydrated, at a superficial velocity of less than 15 cm/min and using columns having specified lengths relative to the mass transfer zone.

Abstract: This invention relates to froth flotation of coal.According to the invention a predominantly paraffinic residual oil having a cut point of at least 190.degree. C. at atmospheric pressure is used as a "collector" for the froth flotation of minerals. A preferred oil is a coal spray oil used in coke oven technology. The "collector" is for use with a "frother" such as a polyglycol ether.

Abstract: A gasket which is particularly suited for sealing the annular space between a pipe and a port in an underground structure is disclosed. The gasket comprises a hollow annular ring which surrounds the pipe and is connected by a narrow neck to a base at least partially embedded in the underground structure. The base has means extending around its outer periphery to mount the seal securely in the manhole and to provide a block against water seepage across the periphery of the gasket.

Abstract: A steam sterilizable copolymer is prepared from 60 to 50% by weight of alpha methyl styrene and 40 to 50% by weight of methyl methacrylate. The copolymer is useful to make the barrel of syringe which is clear, water-white and shows no distortion upon steam sterilization for at least 20 minutes at 250.degree. F.