Abstract: .Iadd.A hand drill includes an induction motor energized by a multi-phase electrical power source with the angle between consecutive phase maintained substantially constant over a wide frequency range by energizing logical circuitry comprising a number of flip-flops intercoupled by AND GATES. .Iaddend.

Abstract: A dop stick with an oval cabachon adhesively mounted thereon for application to a grinding stone has two axes of rotation, one axis to determine the longitudinal curvature of the face of the cabachon, the other to determine the transverse curvature, and may be moved at random about the two axes of rotation simultaneously without departing from accurate positioning of the cabachon for correctly grinding the cabachon face.

Abstract: A hopper valve module is adapted to be removably mounted in the well of a hopper of a hopper dredge vessel for opening and closing the hopper outlet, the module being attached to the vessel only adjacent to the hopper outlet so that the module may be removed as a unit. An annular ring is secured around the top of the hopper well with support arms extending upwardly therefrom to support a vertically extending cylindrical housing having a hydraulic drive cylinder mounted therein with a piston rod connected to a valve member which closes against a valve seat to provide a watertight seal.In a first embodiment of the invention a conical valve member is coupled by a universal joint to the piston rod and has a replaceable resilient covering for sealing against the valve seat at the bottom of the hopper well. A watertight enclosure is provided for the drive means.

Abstract: A pile weatherstripping has a continuous length of a resin anchorage base with even lengths of filaments secured to opposite sides of the base along the length of the base and extending away from the base in the same general direction on each side of the base. The filaments are long enough and dense enough to form insulating pile rows extending out of a retainer slot in which the anchorage base has an interference fit. A sheet resin fin preferably extends continuously outward from the base between the filaments on the opposite sides of the base, and such a weatherstripping is preferably made by wrapping a multifilament yarn around a plurality of bases, securing the yarn to opposite sides of the bases, and then slitting to separate each individual weatherstrip.

Abstract: Particulate mixtures of non-magnetic or paramagnetic materials are separated by selectively coating the surfaces of a component or components of the mixture with a magnetic fluid. Thereafter, the particulate mixture is subjected to a magnetic separation yielding a magnetic fluid-coated fraction and a non-magnetic fraction. The process is especially useful in mineral beneficiation wherein a mineral concentrate is recovered from its ore.

Abstract: Compounds of the formula ##STR1## wherein X is a hydrogen atom, a halogen atom, a trihalomethyl group, an alkyl group, or a cyano group, andY is a hydrogen atom, a halogen atom, or a trihalomethyl group, and compositions containing these compounds exhibit herbicidal activity.

Abstract: Poly(vinylamine salts of mineral acids are produced by reacting acetaldehyde and acetamide at a mole ratio of 1:2-4 with acid catalyst, cracking the ethylidene-bisacetamide which results into vinylacetamide, polymerizing the vinylacetamide with a free radical polymerization catalyst, and hydrolyzing the poly(vinylacetamide) to the desired amine salts by contacting the polyvinylacetamide with an aqueous solution of the corresponding mineral acid. This product may be converted to the free amine, which in turn may function as a precursor in the manufacture of certain polymeric dyes and colorants.

Abstract: Processes for imparting a fresh fruit flavor, particularly strawberry flavor, to foods by adding a small amount of .Iadd.substantially pure .Iaddend.2-methyl-2-pentenoic acid, as well as flavoring concentrate compositions and food compositions prepared with such .Iadd.substantially pure .Iaddend.2-methyl-2-pentenoic acid.

Abstract: A gasoline dispensing system having vapor removal means associated therewith incorporating a pressure-actuated switch for detecting increased gas pressure in said vapor removal means when a liquid blockage occurs therein. When the gas pressure exceeds a predetermined amount, said pressure switch energizes an electrical circuit comprising an alarm.

Abstract: A cleanable and reusable magnetic fluid-filter assembly (1) includes a plurality of elongate magnetic elements (3) hermetically sealed between two fluid-impervious sheets (2,5) in substantially parallel relation. The sheets (2,5) define relatively thin spacer portions having fluid-flow openings (6) between the magnetic elements (3) and integrally formed connector elements (7) at one end of the sheets (2,5) for releasably interlockingly engaging the openings (6) and maintaining a tubular configuration of the assembly (1).

Abstract: A variable area venturi carburetor has a movable venturi wall with a fuel metering rod attached for cooperation with a fuel jet located near an opening in the fixed venturi wall portion, a bypass passage connected to the connecting chamber between the fuel jet and the wall opening siphoning off the fuel at closed positions of the throttle valve to prevent stumbling of the engine by fuel flowing into the main venturi and clogging the small clearance space between the throttle valve and induction passage wall.

Abstract: Novel 3,3-disubstituted acylhydrazinophenylthiourea nucleating agents are disclosed as well as silver halide photographic emulsions and elements containing silver halide grains capable of forming an internal latent image having the nucleating agents adsorbed to the surface of the silver halide grains. Imaging processes in which these materials participate are also disclosed.

Abstract: Roll of disposable aprons formed of flat, unfolded strip of plastic monofilm or film laminate having spaced, transverse perforations and predetermined cut-out areas and packaged in a roll from which discrete aprons can be removed by tearing at the longitudinal perforations, with the resultant aprons, without any further tearing or unfolding, having neck holes and tie straps and being directly ready for donning by users.

Abstract: An apron comprising large and small, generally truncated triangular, burgee flags bearing an insignia of a yacht club or the like. The large flag is worn with the base of the triangle uppermost to form the bib of an apron. Grommets are provided in both aprons along the sides thereof, at the top and bottom of the small flag and at the top and midway of the length of the large flag, and lengths of nautical line connect opposing grommets, front to back. The small flag may be arranged with the triangular base at the shoulders or inverted to form the back waistband, as best suited to the waist measurement of the wearer.

Abstract: A patient's hospital gown having two flaps formed thereon, one of which is adapted to overlap the other and to be wrapped around the body of the patient for attachment to the other of the flaps. The flaps of the hospital gown may be secured to one another by any suitable means, such as straps or release fasteners.

Abstract: Convertible trousers including a body portion configured to be placed on the lower half of a human torso in a conventional manner, a pair of leg portions for accommodating therein a pair of human legs, the leg portions each comprising a plurality of flexible interchangeable tubular elements, and means for selectively removeably securing the flexible interchangeable tubular elements coextensively together. The tubular elements may be joined to the body portion in various configurations to produce a garment of a variable length which may be altered to present several different visual appearances.

Abstract: The face and head protective hood assembly has a window plate for vision, a movable flexible transparent film over the window plate, payout means for the film, and take-up means for removing soiled film. The payout means consists essentially of an elongated housing with a narrow slot in it faced toward the hood assembly. A free-standing non-rotatable shaft is fixed centrally in the housing. A hollow payout roll of flexible transparent film is mounted for rotation about the non-rotatable shaft. Resilient means on the exterior of the non-rotatable shaft presses against the hollow interior of the payout roll to frictionally resist rotational movement of it.

Abstract: A face mask comprising a head covering, a sealing means for isolating the head covering from the atmosphere when the head covering is worn, an air outlet and inlet section connected to the head covering and wiper means provided at the head covering.

Abstract: A prosthesis for reconstruction of the auditory ossicles. The prosthesis comprises essentially a goblet-shaped member, preferably of stainless steel or like inert material, the cup portion of which is disposed to receive the capitulum of the stapes while the stem portion is inserted into a hole drilled into the body of the incus. The prosthesis thus bridges the space between the stapes head and incus, the incus being repositioned against the malleus and the tympanic membrane.

Abstract: A surface replacement knee joint prosthesis is provided which restrains axial and lateral rotation of the knee joint when the leg is fully extended, and superior-inferior dislocation at all times. The prosthesis has femoral and tibial members articulated by spaced spheroidal load-sharing condylar surfaces with substantially matching radii of curvature. The femoral member defines a tapering channel positioned between the spaced condylar surfaces. A stem having a truncated head projects superiorly from the tibial member and progressively engages the tapering channel during extension, for restraining the rotation and dislocation of the knee joint when the leg is fully extended. When the leg is in flexion, the clearance between the stem and the diverging arms which define the channel allows axial and lateral rotation as in a natural knee joint.

Abstract: An iris fixation intraocular lens comprising an optical portion and a side support portion comprising a pair of pincer-like extensions for holding a portion of iris tissue.

Abstract: A prosthesis for replacement of a hip joint is flexion biased so that the prosthetic limb members affixed thereto are urged anteriorly of the body with the prosthetic foot off the ground. Thus, when the prosthetic hip joint is used with the weight activated knee joint, the flexion biasing provides swing phase motion to the leg from energy stored in the biasing member during the stance phase of that leg.

Abstract: An artificial leg employs a knee mechanism having a multi-bar linkage (1, 3, 4, 7, 9, 12). The leg is intended for patients having a disarticulated knee amputation or an above-knee amputation with a long thigh stump, the mechanism being situated in the upper part of the calf. The geometry of the linkage is such that the mechanism has a fixed or virtually fixed axis of rotation (16) which is projected outside the confines of the mechanism into the space occupied by the end portion of the stump. Since the mechanism is uniaxial and internal, a relatively good external appearance can be obtained.

Abstract: A toilet anti-splash and silencer device for mounting on a toilet at the rear of the bowl. A baffle member for dispersing urine quietly into the water of the toilet bowl is pivotally suspended within the bowl on an arm member and is moved to an extended operative position when the toilet seat is raised and is moved to a retracted inoperative position when the seat is lowered. The seat contacts a portion of the silencer device so that movement of the seat moves the arm and baffle member to the desired position. The device may be attached to the center of the seat hinge pin or in toilets of the type where the center of the hinge pin is covered by the seat, a special spring attachment which fastens to the seat hinge brackets may be used. The device may be made of molded plastic, metal or other suitable materials suitably treated to prevent rust and corrosion.

Abstract: A doorless shower stall which confines water such that it cannot be sprayed nor splashed outside of the stall is disclosed. The stall includes a shower chamber area which is enclosed except for an entry passage to the shower chamber. Connected to the shower chamber area by the entry passage is an antechamber having a primary entry way which leads outside of the shower stall and which primary entry way is substantially perpendicular to the entry passage into the shower chamber. In a preferred embodiment, the shower stall is manufactured of molded fiberglass or other material which includes a floor which slopes such that water in the antechamber runs away from the primary entry way and through the entry passage into the shower chamber. The floor of the shower chamber is itself sloped toward a drain located at a desired location in the shower chamber. The shower stall may further include a molded fiberglass cap or ceiling to further prevent escaping moisture from causing damage outside of the shower stall.

Abstract: A portable toilet of the type having two vertically stacked sections, the lower section (12) being a holding tank, and the upper section (14) including a toilet bowl (22), a water tank (26) for storage of water for flush purposes, and a pump (30) for flushing the toilet bowl. To provide a source of chemicals for inserting into the holding tank, a storage chamber (66) is formed in the top wall (38) of the holding tank so as to be confined within the walls (18) of the upper section. To provide a source of toilet tissue paper, a storage chamber (76) is provided between the upper and lower sections (12) and (14) and a toilet tissue paper holder (78) is mounted therein.

Abstract: A padded cover for a hospital bed siderail. Two panels of padded material of a shape similar to the appropriate bed rail and of a size sufficient to completely cover and enclose the bed rail are hinged together for movement between an open, spaced apart relationship and a closed, coplanar relationship enclosing the bed rail. Detachable fastening means are located along the lower edge of the panels for detachably fastening the two panels on the bed rail.

Abstract: A process and apparatus for washing high consistency fibre stock in the de-inking of paper. Grey stock is passed along a passage from a grey stock inlet to an outlet for cleaned stock. The passage is defined by a filter screen preferably of wire gauze. Within the passage is disposed a stirring member. Washing liquid such as water is introduced into the passage preferably by means of apertures in a central portion of the stirring member. Effluent liquid passes through the screen for extraction through a suitable outlet, or for recirculation. The arrangement is such that relative rotation of the screen and member results in clusters of stock fibres, which move around the passage as they pass therealong. The stirring member preferably includes a plurality of longitudinally extending, axis parallel bars radially spaced from the central portion.

Abstract: A pad-type painting applicator of the type having a handle and a replaceable applicating pad includes a simplified design for use in either of two paint applying modes and an improved mechanism for removably mounting applicating pads. A relatively short handle gripping portion is secured to an enlarged base, which mounts the replaceable applicating pad, for use when painting areas close within reach of the painter and where the painter can easily move the tool in strokes generally parallel to the surface on which the paint is being applied. A threaded aperture or short cylindrical portion is provided in the base at an angle with respect to the handle gripping portion for use in conjunction with an elongated extension pole that may be secured to the tool to enable normally inaccessible areas or surfaces to be reached. A flexible tab on the base secures a slideably mounted applicating pad generally in the center thereof.

Abstract: A self-closing, non-rising hinge in cartridge form fits into a socket, generally, in the upper edge of a door. The hinge mechanism is completely enclosed within a housing and provides a strong returning force for closing a door. The hinge is reversible in that it can be mounted for opening the door either from the left or from the right. Where two doors are present, one above the other, as in refrigerators, the hinge may be inserted, in inverted position, into the lower edge of the door to minimize space requirements.

Abstract: In a skinning machine, intended primarily for deskinning poultry pieces, a cylindrical feed screw in a cylindrical passage forms an annular feed passage between them. The passage increases in flow capacity from a hopper at its entrance, where the pieces are received, to a skin removal station, and then decreases in flow capacity to its end. Skin removal means includes pairs of rollers mounted around the passage at the skin removal station to constitute part of the passage wall, each roller having a radially protruding rib that extends into the neighborhood of the surface of the other roller so as to grip the skin between them and strip it from the pieces. The rollers have a peripheral speed greater than the feed screw and part of the separated skin is passed between them out of a respective first exit.

Abstract: A dehider having a novel housing and blade gear assembly and a novel bearing and blade grease system. The novel housing and blade gear assembly permits the dehider's head to be easily disassembled and reassembled for blade changing or sharpening purposes while insuring alignment of the dehider's dual blades upon reassembly. The dehider's novel bearing and blade grease system allows the dehider's bearings to be greased from exterior of the dehider's head, and allows the cavity between the hollow ground dual blades to be provided with grease interiorly thereof also from exterior of the head, i.e., without disassembly of the dehider's head.

Abstract: A device for nobbing and gutting fish comprises an endless conveyor of fish troughs for receiving fish lying on their sides, cutting tools to cut into the fish closely behind their collar bones, and retention means for the fish bodies during the extraction of the intestines arranged downstream of the cutting tools. The retention means comprises a lower retention bar, rising above the bottoms of the fish troughs and an upper retention face, a gap being formed between the retention bar and the retention face. Of the retention means at least the retention face is biased to yield in a common plane of the retention face and the retention bar, so that the gap between these elements may be adapted according to varying sizes of the fish to be treated.

Abstract: A net jointing structure has a pair of warp-knitted net adapters for use in coupling or jointing confronting net ends together. Each of the adapters has a net region and a web region, the net region being subdivided into a plurality of net sections which are formed of a plurality of meshes made of warp chains and are progressively smaller in mesh size. The net section of the smallest mesh size is coupled to the web region and the net section of the largest mesh size is adapted for connection with one of the net ends. The web region carries a stringer of a sliding clasp fastener and includes a plurality of warp chains uniformly spaced along the length thereof, the warp chains in the web region being extensions of the warp chains in the net region. Inlaid threads are included in the net region where they run in and along the warp chains and in the web region where they extend coursewise across and over several warp chains to keep them in uniformly spaced relation to each other.

Abstract: A heat transfer or like surface has fins attached thereto in a disconnected, spaced apart, substantially parallel relation, the fins standing upright on edge on the surface. A method of producing and attaching the fins has particular utility in the presence of a curved mounting surface, the fins being formed to allow them to be bent in conformance with the curved surface. Apparatus including an adjustable roller mechanism and a braze fixture are useful in forming and attaching the fin material.

Abstract: A reed opener assembly for spreading the dents of a reed to permit entry of a needle therebetween during a warp drawing operation has a reed opener blade, a reed opener body and means to retain the reed opener blade and reed opener body in cooperative relationship such that the blade and body combine to form a cam surface for successively engaging and spreading adjacent dents of a reed.

Abstract: In manufacturing an electric lamp having at least one current supply wire connected to a lamp cap after having been passed through an aperture in the cap, the end of the wire is guided through the aperture after folding back the free end of the wire to provide a rounded surface which does not snag. Preferably the wire is folded back at a predetermined distance from its point of emergence from the lamp envelope, thereby eliminating the need for snipping off the excess length.

Abstract: By embedding the impregnated and sintered molding of a dispenser cathode in a holder of metal foil of 10 .mu.m to 100 .mu.m thick, such that any gap between the molding and the holder is less than 10 .mu.m a dispenser cathode can be obtained having a long life and/or quick heating properties.