Abstract: The present disclosure refers to a sequential logical electronic circuit for operating the discharge gates of a plurality of controllable semiconductors with the object of regulating outputs of said semiconductors which operate as simple contactors that open and close electric circuits of a plurality of phases. The circuit is used to control the power of resistive and inductive circuits, etc., its application being as wide as there are circuits in which it is required to control the discharge of semiconductor elements such as tiristores, triacs, cuadracs, power transistors, etc.

Abstract: A snap fastener component strip is disclosed as including a series of like square plastic components interconnected by molded plastic portions which are reinforced by continuous polymer monofilaments embedded in the components to provide a strong, flexible strip of components particularly suited to handling by automatic machinery. A method of molding such strips is also disclosed.

Abstract: Sliders are installed on separated ends of slide fastener stringers by positioning the slide fastener stringers on an upper surface of a stringer guiding means which has converging flanges for guiding and directing slider engaging means of the stringers into the converging openings of the slider.

Abstract: In a woven slide fastener employing spaced coupling elements molded on connecting threads wherein the weft thread loops around the connecting threads between each element to secure the coupling elements to the edge of the tape, the connecting threads are reinforced between the elements by molded projections, sheaths, webs, or the like integral with the coupling elements. Additionally there are disclosed offset heel portions of coupling element legs to increase slider flange engaging surfaces.

Abstract: A surgical instrument has a slender rod with a sharp point which is pushed inside out through skin tissue at a location remote from an incision so that the rod can be manipulated to perform a surgical procedure at the remote location by means of a surgical tool mounted on the other end of the rod.An electro-meniscectome has a handle supporting an insulative blade holder which insulates a portion of a cutting blade and which has a pair of guides extending forward from opposite sides of the blade. The cutting blade is connected to an energizing wire.

Abstract: A retractable cabinet-mounted bathroom-scale including a cabinet or housing mounted to or recessed into a wall and a conventional spring-type bathroom-scale having its rear end pivotally mounted to the housing, with its pivots extending into elongated vertical pivot-guiding recesses in the side-walls of the housing, in which the pivots can move up and down, and the bathroom scale being so arranged in relation to the housing that when it is retracted it is vertically disposed and its operative top-side faces outwardly and its front end is in the bottom of the housing and its rear end in the top of the housing, and when the bathroom-scale is swung outwardly into its horizontal operative position its front end is spaced outwardly from the housing and is supported on the floor on a pair of gliders mounted to or rollers on pivots mounted to the front end thereof and its rear end is pivotally mounted in the housing with its rear pivots in the bottoms of the pivot-guiding recesses.

Abstract: This rotor-carburetor arrangement with idling mixture formation has a traditional throttle flap (2), a rotor-carburetor (3) and at least one idling duct (20). The rotor-carburetor (3) contains an impeller (9) which drives a rotor (8). The rotor (8) has a fuel outlet bore (17). This nozzle bore (17) in the case of a rotating impeller (9) delivers a fuel quantity which stands in a linear relationship to the impeller rpm. The load-fuel air mixture is so lean that a portion of harmful substances in the exhaust gases is minimum and the CO portion is less than about 0.3%. The idling duct (20) has a pipeshaped inlet (23) which is directed toward the impeller (9) and an inlet opening (24) which lies in the marginal area of the intake duct (1) and close below the impeller. In the case of a closed throttle flap (2), the aspirated air flows through the idling duct (20) and this calls for a higher impeller rpm for the idling air throughput.

Abstract: A program controlled multiple stream liquid application process in which longitudinal asynchronism between the application of the portions of liquid is reduced by intermittently or continuously detecting the emission of a test stream at each liquid application station, generating, in response to said detection, an electrical signal indicating the time of emission of each test stream with one or more reference times and thereby to generate a correction signal indicative of the extent of longitudinal asynchronism, and modifying the program control in response to the correction signal. A complementary apparatus is also disclosed. In a separate aspect, multiple stream liquid application apparatus includes means coupling the conveyor and the liquid applicator means so that lateral displacement of the conveyor induces a corresponding displacement of the liquid applicator means.

Abstract: A low cost slide fastener stringer is disclosed as including a tape formed from layers of diverse non-fabric synthetic polymer materials, with a row of coupling elements attached along a folded edge of the tape.

Abstract: A slide fastener is disclosed in which a plurality of thermoplastic coupling elements are each individually secured to ribs on a pair of mounting tapes. A raised attachment boss is formed on the interior of the leg portions of each coupling element with the attachment bosses each being ultrasonically fused to the ribs on the mounting tapes.

Abstract: A card conveyor is disclosed as including a frame with a horizontal top surface supporting two spaced rows of conveyor rollers adapted to engage opposed edges of a card. An endless belt passes along a line tangent to the periphery of each conveyor roller in a row, the belt being pressed against each conveyor roller at its respective point of tangency therewith by a pressure roller which is biased toward the respective conveyor roller, enabling the belt frictionally to drive the conveyor rollers.

Abstract: An apparatus for sewing a slide fastener chain to a pair of article panels separates the chain into separate stringers which are sewn to the article panels with the fastening elements facing outward. The slide fastener stringers are twisted and the inner edges of the attached article panels are folded and the stringers are reinterlocked by a turning and pull-up device through which the slide fastener stringers with attached article panels are pulled by a pulling mechanism.

Abstract: Slide fastener elements, mounted on a longitudinal support member woven in the edge of a tape, are removed by cutting the longitudinal support member on each side of each fastener element and pulling the tape longitudinally between opposed biased blades engaging the elements to strip the fastening elements from the tape.

Abstract: An image intensifier tube has a light-absorbing electron-permeable layer covering an aluminum film overlying a layer of luminescent material in the anode structure of the tube. The light absorbing layer is silicon or boron, or a compound of silicon or boron, and has a thickness of about one-fourth the average wave length of light which impinges upon the photocathode during operation of the image intensifier tube.

Abstract: Modular conveyor units are described as including a movable, continuous, spiral conveyor surface mounted on a frame. Spiral conveyors are constructed by stacking one or more of the modular units one atop the other depending upon the height of the spiral conveyor to be constructed, the conveyor surface of each modular unit forming a segment of the thus assembled spiral conveyor. The conveyor surfaces of all modular conveyor units are driven in the same direction to pass articles carried thereon from one unit to the next in the direction in which driven.

Abstract: A solid fuel furnace is disclosed as including a firebox disposed inside of a heating chamber through which air to be heated is passed. A pair of baffles guides the air through the heating chamber to progressively heat the air. In addition, an auxiliary air system is provided to inject air into the fire when there is a heating demand to increase combustion and provide more heat when it is most needed.A modified solid fuel furnace is also disclosed which includes a combustion chamber having a door designed to prevent flash-back when the door is opened, a valve for preventing a flow of combustion air to the combustion chamber when the temperature in the combustion chamber rises above a present level, and a manual override for the valve.

Abstract: A continuous flexible metal band surrounding a molding wheel and rotating therewith engages the wheel through an arc less than 180.degree., e.g. 110.degree., and is maintained with a substantial inward radius of curvature throughout its entire length. This permits the employment of bands with cavities therein and having thicknesses several times greater than 0.001 times the diameter of the molding wheel without fatigue and failure of the band.

Abstract: An apparatus for fabricating a plastic insulator having helical-shaped shields or screens, these shields radially protruding from an insulator rod. Two oppositely rotating rolls coact to form an infeed gap for the material forming the shields which is infed in a kneadable condition in transverse direction to the rolls. According to a first embodiment drive means serve to rotate the rolls about their axes and the insulator rod about its lengthwise axis. Means provide relative mutual movement of the pair of rolls and the insulator rod in the direction of the lengthwise axis of the insulator rod or parallel thereto, in order to simultaneously form the shield and apply the same to the insulator rod. According to a further embodiment both of the rolls have peripheral grooves and these rolls, with the exception of such peripheral grooves, bear against one another at their outer surfaces, and drive means serve for rotating the rolls for forming a shield or screen rod.