Abstract: A conveyor is described which includes, for example, a bucket wheel arranged on a jib for reducing especially compressed stockpiles or, respectively, for piling up bulk goods, conveyor is constructed so as to pick up or pile up piled-up bulk goods. The conveyor includes a measuring device for measuring the surface profile of the stockpile device. The conveyor is associated with a control device which is constructed so as to move the conveyor automatically to the desired removal or, respectively, piling-up position in dependence on the measured stockpile surface.

Abstract: A flat commutator is described with carbon segments, metal segment-supporting parts supporting these and a hub body of an electrically insulating moldable plastic compound, which supports the segment-supporting parts, a solder layer is provided lying between the two segments for the connection between the carbon segments and the segment-supporting parts. The side surfaces of directly adjacent carbon segment-supporting parts which are facing one another are covered completely by the moldable plastic compound of the hub body. The method for producing this commutator is also described wherein the segment-supporting parts are soldered together with an annular plate later forming the carbon segments before the hub body is fitted onto the segment-supporting parts. The intermediate spaces between the segment-supporting parts are filled with moldable plastic material. Not until after the fitting is the annular plate subdivided into the individual carbon segments.

Abstract: In a small to medium-sized commutator having segments which are circumferentially spaced from each other and are insulated from a hub, with at least one concentric annular groove in the body formed by the segments, in which groove a biased reinforcing ring is arranged. The body formed by the segments is free of arch compression at least in its dynamically and thermally unloaded condition. The segments, under a compression loading of the insulated or insulating hub and/or shaft, are acted upon radially with a compression force corresponding to the total biasing of all present reinforcing rings.In the manufacture of the commutator, each reinforcing ring is in its expanded condition when it is brought into the position provided in the annular groove. Thereafter, spacing elements used to position the segments are removed from the intermediate spaces between the segments.

Abstract: A commutator of the arch-thrust type and process for its production, wherein at least one annular slot is provided in its segment set which is located concentrically to the longitudinal axis of the commutator and into which an armoring ring is placed which is under tension. In order to be able to produce the commutator in a cost-effective manner in spite of a high dynamic and thermal load capability, the segments are provided with punches forming the annular slots. The boundary surface of the annular slot which serves as a support of the armoring ring defines a polygon and is maintaining the insulation using molded plastic or air between the segments which are separated by insulation material radial outwardly of the annular slot.