Abstract: A vacuum furnace having a single chamber in which a workpiece is supported and heat treated. A unique cooling system is designed for adaption with the low pressure/high volume radial flow fan which is positioned interiorly of the furnace adjacent the vertically uppermost portion of the chamber. The system includes an exhaust opening in the top of the chamber and a plurality of small openings strategically located in the lower half of the chamber for improving the uniformity of the flow pattern of cooled gas circulated upwardly through the chamber for cooling a workpiece positioned in the chamber.

Abstract: An apparatus for the separation of components such as molten metals, compounds or metal containing slags centrifugally including a centrifugal body universally suspended including a hollow shaft with a concentric inlet opening at the bottom to be submerged beneath the surface of a liquid to be separated with the larger basket portion surrounding an upper portion of the shaft radially communicating openings and dual layered annular cooling sleeves surrounding the pipe and basket with means for conducting a cooling fluid therethrough and the fluid picking up heat in the submerged area and heating the tube at an upper portion thereof, and light component openings and heavy component openings leading radially outwardly from the basket being located at a radius larger than the radius of the inlet at the base of the tube and successively larger than each other with the tube in one form having a ceramic mouth at the base and a collar insert, and in one form, flaring radially outwardly in an upward direction.

Abstract: A connector including a rotation symmetric contact pin mountably received within a bore in a housing. The housing includes a stop chamber adapted to lockingly engage resilient stop springs tangentially attached to the contact pin when the pin is inserted into the bore such that the resilient stop springs extend from the contact pin into the stop chamber. Rotation of the contact pin retracts the stop springs into openings in the contact pin and permits withdrawal of the contact pin from the bore.

Abstract: In a box-making machine a flat blank is passed longitudinally by a conveyor through a plurality of treatment stations at each of which a treatment element displaceable transversely to the conveyor acts on the blank to fold it up into a three-dimensional box. Each of the treatment elements is carried on a respective threaded spindle that can be rotated to position it transversely of the conveyor, and each spindle is connected via a respective electromagnetic clutch to a common drive chain. Also driven by this drive chain is a control spindle carrying a scanning device which can move past a blank or the like and generate a succession of position signals. The scanning device and the treatment elements are all jointly and synchronously displaced in one direction across the conveyor and as each of the position signals is generated the respective treatment element is arrested so that all of the treatment elements can be exactly positioned in one operation.

Abstract: A contact element of an electric connector to be mated with a flat flexible film circuit board. The contact element affords a good electrical connection and also easy disengagement of the circuit board by providing a semi-conical projection on the end of its spring portion and by providing a slant surface from the conical projection to an end of the spring portion.

Abstract: An open-topped vessel for converting molten ferrous metal to steel is pivotal about a horizontal axis and has bottom tuyeres for blowing oxygen or other gases upwardly through molten metal. An enclosure at least partially surrounds the vessel and cooperates with a smoke hood to prevent the escape of pollutants when the vessel is in its vertical position. A pair of access doors are provided for closing an opening provided in the enclosure laterally of the vessel tilt axis and are mounted for movement in opposite directions. An auxiliary smoke hood is mounted in the enclosure above the opening for capturing pollutants when the vessel is tilted toward said opening for being charged. The inner surface of the doors are formed of a plurality of tubular members which extend generally vertically and are connected to inlet and outlet headers at their opposite ends. The doors may be provided with a removable section in the region most directly impacted by materials discharging from the vessel when the vessel is tilted.

Abstract: Coils of strip to be annealed are placed in a furnace with their eye vertical and are heated to the annealing temperature by heating elements on the furnace above and below the level of the coils. An improved convector coil support includes a single metal plate having a central opening and grooves in one side extending from the central opening to the outer periphery when used to support a bottom coil and two such plates fastened together with their grooves facing each other when the convector is used to support a coil on top of a coil.

Abstract: A crucible furnace for high-temperature melting of metals or other materials which includes a capped vessel for serving as a crucible to hold a charge of material to be melted, a solid baffle surrounding and closely spaced from the vessel to form a restricted passageway and a refractory wall surrounding and widely spaced from the baffle to form a combustion chamber. Fuel is supplied at the base of the combustion chamber and mixed with air preheated by a compact internal recuperator operative from exhaust gases exiting the restricted passageway. The fuel is burned in the combustion chamber, heating the baffle which in turn radiates heat to the vessel containing the charge. Several of the elements forming the combustion and heat transfer system also serve as structural elements providing rigid support to internal components when the furnace is upright and when it is tilted to pour off melt.

Abstract: An installation for nitriding-sulphiding of steel and cast-iron articles including an enclosed tank, and a retort containing sulphur and placed in the interior of the tank. The retort is surrounded with a heating device. The tank is provided at its top with two pipe connectors. One connector is connected with the container of ammonia and the other connector is connected with the furnace for chemical and heat treatment of the articles. The ammonia flows from its container to the tank with a retort containing sulphur, wherefrom after being mixed with the vapors of sulphur, it flows out to the furnace in which the articles to be treated are placed. In the furnace at a temperature of 400.degree.-700.degree. C., the nitrogen and sulphur diffuse to the surface layer of the treated articles, thus producing the required sulphides in the nitrided layer.

Abstract: A rotating collar lock connector for terminating the end of a coaxial cable in which all of the metal parts therein are either stamped and formed or drawn, as opposed to being machined. Further, since no solder is required and since assembly is accomplished entirely from one direction the connector can be assembled at a single rotary type assembly machine. The connector comprises a rear metal sleeve which receives the coaxial cable at a first end thereof. A rotatable metal collar has a flanged first end which is slipped over the first sleeve from the second end thereof until it abuts against protuberances formed on the surface of the first sleeve near said first end. A metal spring means, such as a spring washer, is then slipped over the first sleeve up to said collar flange.

Abstract: Apparatus for conveying paperboard carton blanks through stations including means operative sequentially to fold the blanks about suitably scored lines into set-up tubular carton shells, including end closure flaps, about a mandrel extending along the line of blank travel, and means for rotationally transferring the set-up carton shells to carton filling and closing apparatus. Means is provided at a suitable one of the stations for applying adhesive to side flap portions of the folded blanks to retain their set-up modes as tubular carton shells.

Abstract: A disposable stapler apparatus adapted to be disposed of after a set of staples contained therein have been individually dispensed. The apparatus includes a staple magazine having a set of staples predisposed therein, the magazine being adapted to be substantially closed so as to be non-refillable. The staple magazine is adapted to cooperate in a conventional manner with a base so as to perform a conventional stapling operation on sheet material placed between the base and the magazine.

Abstract: Our improved nozzle mounting comprises a support member for the nozzle secured to the projecting end of the innermost or granular material carrying conduit. The nozzle is mounted on a horizontally disposed pivot, carried by said support member. Granular material is conveyed from the lower end of the granular conveying pipe to the nozzle through a flexible member and water is supplied to the mixing nozzle by means of a flexible water pipe or hose. Our improved mixing nozzle mounting is simpler in construction than the one shown in our aforesaid patent and hence is cheaper to construct and maintain inasmuch as we have eliminated various rotary seals, gears and the like.

Abstract: An apparatus having a form removably receivable in a carton or the like to maintain the carton in rigidly erect condition, and a frame having side portions bounding an internal receptacle dimensioned to receive the carton in removably fitted relation therein and the side portions having corresponding edges delineating a course along which the carton is severed to convert the carton to a preselected configuration.

Abstract: Connector of the multi-channel type, comprising two ferrules, the angular orientation by which the conductive contacts are positioned opposite one another, provided by end surfaces, at which said contacts open, shaped in the form of a plane inclined at the same angle relative to a plane perpendicular to the longitudinal axis, by which the two ferrules are automatically oriented angularly into a single matching position, when said end surfaces are in contact.

Abstract: Cooling element for a metallurgical furnace having steel tubes for conveying a cooling medium and a refractory lining which is anchored to the front surface of the cast iron body on the furnace side thereof in recesses which run parallel to the wide side of the cooling element. The recesses have a cross-section which widens out starting from the front surface of the cast iron body towards the inside of the cooling element and the refractory lining is inserted into the recess.

Abstract: An apparatus for and method of comparing an inventory of a competitor's products with a supplier's suggested inventory are provided utilizing a competitor's part numbers sheet having a first arrangement of the competitor's part numbers thereon with a vacancy adjacent each part number for marking the quantity of each number to define the inventory of competitor's products and a supplier's part number sheet is provided having a second arrangement of the supplier's part numbers thereon which is identical to the first arrangement with the supplier's sheet having an opening therein adjacent its numbers whereupon the supplier's sheet is aligned over the competitor's sheet so that the supplier's sheet hides the first arrangement of part numbers and each quantity of competitor's part numbers is viewable through the opening opposite a corresponding supplier's part number, whereby each supplier's part number and its viewable quantity comprise the supplier's suggested inventory.

Abstract: Melting furnace constructions for the melting of ingots, the constructions including crucibles and insulating means for the crucibles. The insulating means serve to separate the charge from the heating means for the construction. The ingots employed are maintained out of contact with the crucible side walls and the crucibles define bottom surfaces which include means for maintaining substantial portions of the ingot bottoms out of contact with the crucible bottom. This arrangement minimizes heat exchange between the charge and the crucible to minimize thermal shock. The crucible is also preferably provided with a capsule of ceramic material cast around the crucible. The capsule and crucible combination is inserted within a liner with the adjacent capsule and liner surfaces substantially conforming whereby ideal support and strength for the combination is accomplished.

Abstract: Apparatus for heat treating the weld and heat affected zone between a steel pipe and a steel connector, the apparatus including an induction coil to heat the weld and weld heat affected zone to a selected temperature. A ring shaped manifold having nozzle means to direct flow outwardly is connected with pumping means to pump gas simultaneously against the interior and exterior of the weld and heat affected zone.

Abstract: The disclosure teaches an improvement in the degassing and filtration of molten metal, especially aluminum, using an apparatus which employs a pair of sequentially placed, removable filter-type plates and at least one fluxing gas inlet positioned therebetween. The first of said filter-type plates is characterized by a plurality of holes which provide a preferential path through which the fluxing gas flows upwardly through the first of said filter plates in countercurrent contact with the melt. Said plate serves to break up said fluxing gas into a fine dispersion to assure its intimate and extensive contact with the melt. Dissolved gases and non-metallic inclusions are thereby abstracted and removed from the melt.