Abstract: A welding torch includes a torch body and at least one device for feeding a consumable welding wire towards the tool center point that has an attachment device for attachment to the torch or an element connected thereto. A base support, which is connected to the attachment device, includes at least two deflection elements for guiding the wire towards the center point. The at least two deflection elements are arranged on the base support so that a first wire path length from the last deflection element located closest to the center point to the center point is shorter than a second wire path length between the last deflection element and a further deflection element as viewed counter to a main wire feed direction, and so that the arcuate wire has a greater segment height along the second path length than the segment height along the first path length.

Abstract: A welding torch includes a torch body and at least one device for feeding a consumable welding wire towards the tool center point that has an attachment device for attachment to the torch or an element connected thereto. A base support, which is connected to the attachment device, includes at least two deflection elements for guiding the wire towards the center point. The at least two deflection elements are arranged on the base support so that a first wire path length from the last deflection element located closest to the center point to the center point is shorter than a second wire path length between the last deflection element and a further deflection element as viewed counter to a main wire feed direction, and so that the arcuate wire has a greater segment height along the second path length than the segment height along the first path length.

Abstract: A piston machine (1) for converting heat into work or for heating and cooling by the application of work, having at least one chamber arrangement (8), which comprises at least two chambers (2, 3, 4) connected by at least one connecting duct (9, 10), wherein at least two of the chambers (2, 4) are substantially thermally insulated against one another, and having pistons (5, 6, 7) which are impermeable to a working medium and are movably arranged in the respective chambers (2, 3, 4) to vary a partial working volume bounded by the chamber (2, 3, 4) and the piston (5, 6, 7), wherein at least one of the chambers (2, 4) comprises thermal transfer surfaces (34, 45) to increase the surface area thereof, wherein the pistons (5, 6, 7) or elements connected therewith, are connected to actuating elements for defining motion profiles for each of the pistons (5, 6, 7), and wherein the actuating elements are designed to define at least two different motion profiles for the pistons (5, 6, 7) in the chamber arrangement (8).

Abstract: A welding wire conveyor roller for conveying a welding wire includes a receiving aperture for receiving a receiving pin, and a running surface for the welding wire, and a feeding device for conveying a welding wire includes a drive motor, at least two receiving pins arranged at a distance to each other, and at least two welding wire conveyor rollers with running surfaces for the welding wire which are placed upon the receiving pins by appropriate receiving apertures. For achieving improved conveying properties even with different welding wires, an area elastically deformable in the radial direction is arranged between the running surface and the receiving aperture of the welding wire conveyor rollers.

Abstract: The invention relates to a device for transporting a welding wire (13), comprising at least one pair of rollers (55) consisting of drive roller (32) and a pressure roller (31) and a device (28) which is used to clamp a welding wire (13), in addition to a roller, in particular a drive roller (32), an intermediate piece (49), a threading device (74), a automatically centering device (80) and a device (85) which is used to detect the transportation speed of the welding wire (13). The pressure roller (31) is mounted in a pivotable pressure lever (29) in order to produce the most smallest, compact and easy to handle wire transporting device (27) possible and the clamping device (28) comprises a clamping bar (37) which can be connected to the pressure lever (29) in order to fix and pressurize.

Abstract: The invention relates to a device for transporting a welding wire (13), comprising at least one pair of rollers (55) consisting of drive roller (32) and a pressure roller (31) and a device (28) which is used to clamp a welding wire (13), in addition to a roller, in particular a drive roller (32), an intermediate piece (49), a threading device (74), a automatically centering device (80) and a device (85) which is used to detect the transportation speed of the welding wire (13). The pressure roller (31) is mounted in a pivotable pressure lever (29) in order to produce the most smallest, compact and easy to handle wire transporting device (27) possible and the clamping device (28) comprises a clamping bar (37) which can be connected to the pressure lever (29) in order to fix and pressurise.