Abstract: The invention relates to a method and a tool for producing cylindrical workpieces having longitudinal grooves, wherein the actual rolling operation is preceded by a drawing stage integrated in the tool and wherein the forming rollers are realized with an improved mounting.

Abstract: The invention relates to a method for producing longitudinal grooves in cylindrical workpieces using a rolling deformation method preceded by a performing method.

Abstract: The invention relates to a method and a tool for producing cylindrical workpieces having longitudinal grooves, wherein the actual rolling operation is preceded by a drawing stage integrated in the tool and wherein the forming rollers are realized with an improved mounting.

Abstract: The invention relates to a method for producing longitudinal grooves in cylindrical workpieces using a rolling deformation method preceded by a preforming method.

Abstract: An emptying utility for containers, in particular for emptying garbage containers into the collecting tank of a garbage truck, is equipped with a weighing device which determines during the uninterrupted progress of the emptying operation, in one or two time clock windows, the weight of the filled container moving upwardly and, possibly, the weight of the emptied container moving downwardly. Towards this end there is provided a force transducer at that element of the pour-in utility which is connected to the fixed support of the utility, either directly or via an intermediate member. Display and/or registering instruments of the utility contain a control and computing unit which is capable of selecting predetermined measured values, for use in evaluation, from all those measured values which are constantly being supplied by the force transducer during the entire, uninterrupted course of the emptying operation.