Abstract: A perpendicular connection of two profile rods abutting at an angle (&agr;) with undercut linear grooves has a connecting bolt with a head at one end. This is arranged parallel to the axis of symmetry of a longitudinal profile rod in an undercut linear groove therein, and engages with its other end in a tenon block arranged in an undercut linear groove of the transverse profile rod. A spread element inserted in the undercut linear groove can be spread by the effect of an axial force generated by the connecting bolt transverse to the linear groove and firmly clamped in this as an abutment. The spread element comprises a spread body with an axial holder bore and a wedge body which can be inserted therein with the through bore for the connecting bolt, where the head of the connecting bolt lies against a face of the wedge body.

Abstract: In a process for the winding of coils into axial slots disposed on the outer perimeter of rotationally symmetric bodies of electrical devices, at least one wire, guided by a winding arm movable about an axis of rotation perpendicular to the axis of rotation of the body, is laid into the slots via a winding form. The body is turned about its axis of rotation by the space of at least one slot after each laying of the wire into an initial slot, accomplished by an initial swinging motion of the winding arm about its axis of rotation, with the wire being laid into a second slot by a second swinging motion opposite to the first and guided back to the start of the first slot after the laying into the second slot for the formation of a coil winding by additional turning. A suitable winding form has a wire-guiding slit that ends in an undercut slot whose undercut surfaces fix the wire on the base of the slot until the completion of the following swinging motion of the winding arm.

Abstract: A method and apparatus for the production of armatures for small electric motors is provided wherein the armatures are clamped in specially designed workpiece holders and continuously processed in successive work stations. The stations may include an armature loading station, a collector pressure-fitting station, a winding station, a welding station, an electrical testing station and an armature discharge station. The transportation of the workpiece holders through the apparatus is effected by a revolving conveyor belt which moves the workpiece holders individually or in groups to the successive work stations. At each work station, the workpiece holder is raised from the conveyor belt, secured in the work station, and connected by clutch devices to corresponding actuating devices within the work station.