Abstract: An electrical resistance grid welding machine for welding a family of wires as it passes through the machine along a feedpath into a strip of welded mesh which has a row of electrodes and a row of counterelectrodes arranged above and below the family of wires. The electrodes and counterelectrodes are supported at intervals by separate electrode beams which are driven back and forth, thus coupling the electrodes and counterelectrodes in a common motion. Pressure beams, which are connected to the electrode beams by rigid connectors, can be driven only perpendicular to the feed path. These pressure beams transmit the welding pressure to the electrodes but permit the electrode beams to carry out their reciprocating motion. The electrodes are guided in their associated electrode beam so as to be able to shift in the beam and are loaded by springs.

Abstract: The transmission comprises two pairs of aligned coaxial shafts (3,5,12,13) capable of being moved by way of a control relative to each other in an axial direction and having associated therewith at their respective facing ends or sides in each case a clutch disk (37,38,39,40). The shafts can be coupled in various combinations by way of a clutch body (2) disposed so as to be freely shiftable and rotatable between the two pairs of clutch disks.In order to dispose the motor and the elements driven by it on the same side of the transmission, the first pair of coaxial shafts is formed from an extension (3) of the drive shaft (1) extending beyond the clutch element or body (2) and from a hollow shaft (5) concentrically surrounding this extension (3) and connected to it under a fixed transmission ratio.

Abstract: This multispotwelding machine serving for the production of grids or gratings has a welding electrode system (50, 51, 52) suitable for double spotwelding in the direction of the longitudinal members (L) and having two lines of weld (S1, S2), two crosswire feed lines (E1, E2) arranged in a fixed position at a distance apart (A), two crosswire transfer tools (4, 5) which are arranged on a common bearer (1), which can be shifted in the direction of the grid feed by a length of stroke (H) corresponding with the distance of the plane of symmetry (ME) of the feed lines from the plane of symmetry (MS) of the lines of weld (S1, S2) of the welding electrode system, as well as a grid feed mechanism (67).

Abstract: The power transmission has two pairs of coaxial shafts (1,15 and 2,30 respectively) which are aligned with one another and are displaceable relative to one another and carry at their adjacent ends a coupling disc (3,16 and 4,31 respectively) upon each, which can be coupled at option by a central freely rotatable coupling body (12). In order also to enable direct connection of the driving shaft (1) to the driven shaft (2), one shaft each of the two aligned pairs of shafts (1,15 and 2,30 respectively) is formed by the driving shaft and the driven shaft respectively (1 and 2 respectively) and the other shaft is made as a coaxial hollow shaft (15 and 30 respectively) and is coupled via a gear wheel (23 and 38 respectively) and a back gear (26 and 51 respectively) to a gear wheel (22) on the driving shaft (1), or respectively coupled or able to be coupled via a gear wheel (50) to the driven shaft (2).

Abstract: A mechanism for bending a coplanar family of straight wires into zig-zags comprises deflector rollers for feeding the family of wires longitudinally in parallel with one another, bars adapted to be displaced transversely to the wires and carrying wire deflector pins, and a control device for moving the bars alternately in opposite directions transversely of the wires. In order to avoid sliding of the wires against the deflector pins during the bending operation, each bar is hinged to the one ends of at least two parallel bearer arms of equal length and pivotally supported about axes running perpendicular to the plane of bend. During each bending operation only one bar at a time can be displaced transversely by means of the control device to carry out a working stroke.

Abstract: The disclosure relates to the production by means of an electrical resistance welding method, of grids formed from metal wires crossing over another. The grid wires are carried through between rows of cooperating electrodes and, under pressure, are welded together at the cross points of the wires by an electric current. Each cross point of the wires and the surfaces of the associated electrodes of the grid welding machine, which lie in the welding region, are subjected to the action of a liquid coolant to increase the life of the electrodes and reduce distortion of the grid due to the localized heating of the wires.

Abstract: A grating of metal longitudinal strips (1) standing on edge in parallel with one another and narrower metal cross-strips (3) parallel with one another, is (for the achievement of higher load capacity) produced in such a way that in the longitudinal strips (1) slots (2) of changing width are incorporated, in which the inside width of the slot at the open end of the slot is chosen to the greater than, but on the contrary remote from this end of the slot is chosen to be less than the thickness of the cross-strips (3), cross-strips (3) are inserted into these slots (2) with the application to the strips (1, 3) of a welding voltage serving for the resistance welding, and with the application of pressure in the direction of insertion, so that material driven out from the edges of the slots forms weld beads (9) at the points of intersection of the strips.

Abstract: A double point welding machine has active electrodes (3,4) and passive counter-electrodes (8,9) for simultaneously welding rods (5,6) together. In order to ensure that the welding pressure is uniform at both welding points, the counter-electrodes (8,9) are mounted on a current bridge (7) carried by a pressure beam (15). The pressure beam forms part of a four bar pivotal linkage the other arms of which are formed by rams (26,27) and a second beam (24) which is pivoted at a pivot (25).

Abstract: The invention concerns a mechanism for transferring cut-to-length wires out of a loose bundle of wires into a single layer of parallel wires. The mechanism comprises a wire channel, for receiving the single layer of parallel wires, which is inclined to the horizontal. The upper end of the lower side of the inclined channel extends beyond the upper end of the upper side to form a rest for the loose bundle of wires. At least one wiper-cam is positioned above the extended end of the lower side of the channel and is pivotable to and fro in the longitudinal direction of the channel, the end face of the cam facing the lower side of the channel being spaced from the lower side by a distance such as to allow a single wire to pass therebeneath into the channel. The lower side of the channel can be moved relative to the upper side of the channel.

Abstract: The invention relates to a change-under-load transmission having an input shaft (1) and an output shaft (6), each carrying a pair of gearwheels (2, 3; 4, 5). A composite layshaft comprises two pairs of coaxial shafts (7, 8; 9, 10) which are aligned axially with one another. At their adjacent ends the shafts carry friction coupling elements (25, 31 and 25, 30) which have effective coupling faces (25', 31'; 26' 30'). At their remote ends each of the coaxial shafts carries a gearwheel (23, 27; 24, 28) which is in permanent mesh with an associated one of the gear wheels on the respective input or output shaft. Between the adjacent ends of the two pairs of coaxial shafts a central friction coupling element (32) is positioned so as to be freely slidable axially with respect to the coaxial shafts. Correspondingly positioned ones (7, 9 in FIG. 1; 8, 10 in FIG.

Abstract: A machine for stacking mesh reinforcement grids alternatingly in initial and reversed orientations includes a frame on which the grids to be reoriented are held during the reversing operation. The frame is mounted on swivelling arms for swivelling therewith and for turning relative thereto between two positions, and the frame is turned through 180.degree. relative to the arms during their swivelling to one of such positions and held stationary relative thereto during the swivelling toward the other position. Guide rails are retractably positioned along the feed path of the grids to support those grids which are not to be reoriented, prior to the retraction of such rails which takes place before the release of the reoriented grid from the frame.

Abstract: Wires are picked from a loose bundle of wires which have been cut to length, prior to feeding to a processing machine such as a grid welding machine. The bundle is laid on a supporting table (23) so that end parts of the wires project freely beyond the table. A lifting beam (18) having a vertical slot (19) is then raised beneath the projecting end parts of the wires so that most of the wires are raised but the others are received one above the other in the slot. A gripper having clamping cheeks (20) is applied from below and grips the lowermost wire in the slot. The gripper is mounted on a carrier (2) which is movable parallel to the wire axes to pull the gripped wire longitudinally out of the slot.

Abstract: A multispot mesh welding machine has a row of welding electrode holders (2) on one side of the working plane of the mesh (Q, L), each holder (2) being electrically connectable to a selected one of at least two busbars (11, 12, 13, 14) which extend across the machine transversely of the direction of advance of the mesh (Q, L), by a respective switching member (9) movable with respect to the electrode holder (2). Each of the elctrode holders (2) has a contact tongue (6) overlying the contact faces of the busbars (11, 12, 13, 14,) and the respective switching member (9) is positioned between the contact tongue (6) and the contact faces of the busbars (11, 12, 13, 14).

Abstract: A shearing machine for severing parallel longitudinal members of grids or gratings has a horizontal guide-beam (9) which is stationary during the cut and upon which are provided counterbutts (17) in the manner of comb teeth; and a cutter-beam (10) which is movable parallel to and alongside the guide-beam during the cut and upon which blades (18) are provided in the manner of comb teeth, the blades cooperating with the counterbutts on the guide-beam to shear longitudinal members extending through notches (19,20) formed between adjacent counterbutts of the guide-beam and between adjacent blades of the cutter-beam. The guide-beam and the cutter-beam are guided in a machine frame for vertical movement into and out of a working position in engagement with a grid or grating and are associated for common motion in the vertical direction.

Abstract: The invention relates to a method of cutting off sections of a grating web of any desired length by means of shears. In the event there occurs a gap between the cross-bars of a welding machine, wherein the occurrence of the gap is established by a computer, so as to enable the introduction of the cutting blades of the shears into the mesh of the grating web, the grating web is cut in response to a signal from the computer.

Abstract: The invention relates to a grid welding machine operating on the electrical resistance welding principle and having continuous forward feed of the longitudinal wires. Groups of rotary electrodes and counter-electrodes cooperate in pairs and are arranged above and below the feed path of the longitudinal wires respectively. The electrodes and counter-electrodes are formed as rollers, opposite each electrode roller on the far side of the feed path of the longitudinal wires a counter-electrode being disposed in the same plane. The electrode rollers are spring-loaded individually in the direction towards the associated counterelectrode roller. Between the counter-electrode rollers and coaxially therewith there are arranged substantially circular cross-wire feed discs each having a number of grooves provided at angular intervals along the periphery of said disc for receiving said cross-wires.

Abstract: The invention relates to electrical multi-spot resistance welding machine for the production of welded bar gratings produced by welding cross-bars into the narrow side of parallel, upright flat bars. Such a machine has a pressure-beam which is guided vertically on a frame for lowering onto and raising away from the bars to be welded. Two rows of electrodes are disposed on the pressure beam, the rows being transverse to the feed path of the flat bars and the electrodes in the two rows being aligned in the feed direction of the flat bars and the electrodes of each aligned pair thus formed are connected to the secondary terminals of opposite polarity of a respective welding transformer.

Abstract: The invention relates to a binding tool for twisting the free ends of a binding wire, particularly for holding together metal reinforcing rods at their crossover points. The tool has a feed device for the binding wire, at least one pair of wire guides which can be opened and closed like pincers and which form, in the closed state, a U-shaped wire guide path, in use, around an assembly to be bound, shears for cutting the advanced wire to length and a twisting head which can be driven and which has wire passages to receive the ends of the wire to be twisted, the wire feed path extending, when the twisting head is in the position of rest, through one wire passage therein and, via the U-shaped wire guide path into the other wire passage in the twisting head. The twisting head is disposed in the space between the wire guides of the or each pair and the wire passages in the twisting head are formed in components which can be swung inwards about bearing pins.

Abstract: The invention concerns an apparatus for detaching wires previously cut to length from a disordered bundle. The apparatus includes a container for the bundle of wire in which there is mounted, adjacent one end, a device for grasping the wires in turn adjacent their ends and moving them transversely to their longitudinal axis against a stop situated to the side of the draw-in region of two conveyor rollers which have a variable spacing between their axes. The rollers are arranged, on reducing their axial spacing, to grasp the end of each wire bearing against the stop and to pull that wire out of the bundle substantially in its axial direction to convey it to a receiving device.

Abstract: The invention is concerned with a multipoint mesh welding machine having a row of electrode holders on one side of the working plane of the mesh. The electrode holders are selectively electrically connectable to one of a number of busbars extending across the machine by individual adjustable switching members.