Abstract: A flexible jumper is made by arranging a series of stranded conductors around a hollow core, placing a sleeve over the ends of the arranged conductors and then crimping the sleeve and conductors to provide a more dense conductor annulus between the sleeve and core. The solidified and concentric circularized conductor ends are soldered into a socket of respective terminations without the solder wicking up the conductors. A hose is sealed to each termination and water is circulated through the jumper. The jumper is more efficient, easier to make, and has a longer service life.

Abstract: An alternate polarity water cooled kickless cable utilizes semi-circular half terminal end members which have diameters abutting an insulator separator. The inner end of each terminal is provided with blind slots offset from each other along the abutting diameters. The slots are arranged for individual conductor strand fittings which are closely fitted and soldered in the appropriate slot. The slot arrangement is such that the good electrical contact is obtained on at least three sides and when the end members are secured together, the individual conductor strand terminations are captured within the slots so they cannot move transversely of the axis of the cable. A soft yieldable star or spur separator is employed between the terminations which has an enlarged center hole and a significant radius between each leg avoiding a sharp V-notch which would tend to pinch each conductor strand when the cable twists.

Abstract: A flexible laminated jumper is formed from a stack of half hard tempered copper sheets. Contact plates are clamped to opposite sides of one end of the stack, such plates being provided with short stress relief sections away from the end of the stack. The clamped end is positioned properly in a press welder so that the fiat portion of the contact plates are gripped by graphite electrodes of a press welder. The gripped end of the stack is then press welded while the balance of the stack is cooled so that the heat from the press welding does not affect the temper of the sheets of the stack. This is preferably done by immersion in chilled water with the water level being in close proximity to the electrode. After the press welding, the entire stack is cooled and the still tempered stack is formed to the desired configuration.

Abstract: An alternate polarity water cooled kickless cable utilizes semi-circular half terminal end members which have diameters abutting an insulator separator. The inner end of each terminal is provided with blind slots offset from each other along the abutting diameters. The slots are arranged for individual conductor strand fittings which are closely fitted and soldered in the appropriate slot. The slot arrangement is such that the good electrical contact is obtained on at least three sides and when the end members are secured together, the individual conductor strand terminations arc captured within the slots so they cannot move transversely of the axis of the cable. A soft yieldable star or spur separator is employed between the terminations which has an enlarged center hole and a significant radius between each leg avoiding a sharp V-notch which would tend to pinch each conductor strand when the cable twists.

Abstract: A flexible laminated jumper is formed from a stack of half hard tempered copper sheets. Contact plates are clamped to opposite sides of one end of the stack, such plates being provided with short stress relief sections away from the end of the stack. The clamped end is positioned properly in a press welder so that the flat portion of the contact plates are gripped by graphite electrodes of a press welder. The gripped end of the stack is then press welded while the balance of the stack is cooled so that the heat from the press welding does not affect the temper of the sheets of the stack. This is preferably done by immersion in chilled water with the water level being in close proximity to the electrode. After the press welding, the entire stack is cooled and the still tempered stack is formed to the desired configuration.

Abstract: An air cooled kickless cable used in welding has each end of positive and negative stranded rope sets cold formed in a rectangular tube with such rope ends within the tube being formed into a continuous compacted strand with the ropes of the set arranged parallel to the long axis of the rectangle. The rectangle of the tube forms a major flat side which is press welded to one end of a contact plate. The press welding also welds the strands to each other, the strands to the tube, and, in addition the tube to the contact plate. The rope sets are assembled in a spider separator, and twisted with the contact plates fastened together with insulation therebetween. The cable is provided with a perforated cover, end tubes and heat shrink end fittings.

Abstract: A DC kickless water cooled cable used in welding is disclosed in which the cable strand ends are crimped into the cable terminations with the aid of a D-clip, and then the D-clip, crimped cable end, and termination are press resistance welded together to form a low cost substantially integral connection.

Abstract: A coaxial bus and bus system for electric furnaces which significantly reduces and minimizes heating and losses due to magnetic induction effects are characterized by a concentric tubular bus stem connected at one end to a transformer and branching at the other end to be connected to the furnace. The bus stem includes concentric tubular conductors which are connected at such one end to the transformer by respective diametrically opposed terminal lugs. At such other end, bus branches each including a conductive cross bar and a flexible feeder are respectively connected to the tubular conductors and form a yoke between which the furnace heating element or elements may be connected. The feeders are adjustably secured both pivotally to and longitudinally along their respective cross bars and each includes a plurality of stacked conductive leaves which are pressure welded together and to contact and reinforcing plates at their ends.

Abstract: The present invention provides for measuring and analyzing AC currents and preferably relatively large AC currents, such as those that are conventionally delivered to an electric arc furnace, as an indication of the current carrying capability or condition of one or, preferably, several cables, e.g. electric arc furnace conductors, carrying such AC currents. The invention monitors such AC currents for a period of time, stores the monitored information, and permits subsequent read-out of the stored information.

Abstract: A cable termination assembly for a kickless welding cable of the type comprised of a pair of opposite polarity mutually insulated lugs each having connected thereto a plurality of conductors which are helically and alternately wound is characterized by a terminal including a pair of mutually insulated terminal lug elements each having an offset extension with opposed recessed contact surfaces and cable conductor connectors secured to the terminal ends of the cable conductors, each connector having a contact surface for engagement with one of the recessed contact surfaces of the terminal lug elements, the relative configurations and orientations of the connectors and terminal elements when fastened together being such that the cable conductors at their terminal ends are substantially straight and parallel, and extend in alignment with their respective relative positions in which they are located in the cable adjacent the terminal ends.