Abstract: A method and apparatus for separating, ordering, and feeding metallic workpieces, particularly hard-to-handle workpieces which become easily entangled with one another, from a disorganized pile of workpieces. A traveling electromagnetic field is produced by a three-phase motor stator. The stator may be of the linear type, or either internal or external rotor type, cylindrical three-phase motor stators. Metallic workpieces are disposed within the traveling field, and experience stochastic motions therein. When organized, the metallic workpieces are oriented substantially perpendicular to the direction of travel of the traveling magnetic field. Discharge channels may be provided to transport the oriented workpieces to a pick-up point.

Abstract: An arrangement for gripping metallic workpieces formed of ferromagnetic materials or electrically highly conductive materials, by means of electromagnetic forcs. In one embodimet, two linear-motor stators perform as gripping elements by producing travelling fields which exert gripping forces on the workpieces. The linear-motor stators may be configured to conform to the geometry of the workpieces, and are supported by at least one gripper arm.

Abstract: An improved arrangement for measuring temperatures in which a bridge containing two temperature dependent resistances is used. A first branch of the bridge consists of a parallel connection of two series circuits each consisting of a constant resistance and a temperature-dependent resistance and a second branch of the bridge consists of a series circuit of two constant resistances. Means are provided to impress a constant current on the first bridge branch so that the current divides between the two constant resistances at the input and flows out between the two temperature dependent resistances. At the second bridge branch, a voltage corresponding to the voltage generated in the first bridge branch is impressed. A junction of the second bridge branch is at the same potential as the current sink of the first bridge branch.

Abstract: An apparatus is described for wrapping a compound-curved conductor bar. It includes a winding head which is provided with a motor-driven winding ring equipped with rolls carrying insulating tape. According to the invention, the revolving winding ring is held in five degrees of freedom. For purposes of positioning it relative to the compound-curved conductor bar to be wrapped, the winding ring is adjustable in three orthogonal coordinate directions and can be tilted about two mutually orthogonal axes. The winding head carries a sensing device for measuring its change of position relative to the conductor bar to be wrapped and furnishing correction signals.