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| Number | Title | Issue Date |
| 4682280 | Simulation arrangement for determining desired values for the transport of workpieces of a multistage press An arrangement that is independent of a press for physically simulating the actual movements of transfer rails of a multi-stage press and for reducing periods of stoppage of multi-stage presses during the tool change and the connected setting up of tools,... | 07/21/1987 |
| 4680954 | Gripping devices in idling stage areas of a transfer press For avoiding collisions between the grippers (5) adapted to be moved out of the idling stage area and the grippers (4) disposed fixedly at interchangeable gripper rail partial sections (1) and work tool parts, the grippers (5) which are adapted to be move... | 07/21/1987 |
| 4651273 | Pressure control installation for presses A pressure control installation for presses in which the individual pressure consuming stations are to be actuated with different pressures. During the setting up of the presses, it is necessary to fetch and display visible for the operator values adjuste... | 03/17/1987 |
| 4648003 | Electrical circuit arrangement for the protection of presses A protective circuit arrangement of a motor control for the starting and operation of a motor of a press with a power stage, a current-regulating element and a rotational speed regulating element. Comparator stages are connected to the inputs of the regul... | 03/03/1987 |
| 4615203 | Coining press A one-armed ejection lever of a coining press is adapted to be controlled in one end section directly by the coining ram by way of a connecting rod and in the other end section by an operating piston-cylinder unit. The center portion of the ejection lever... | 10/07/1986 |
| 4607557 | Punch A punch which includes a notching tool and a separating which are adapted to punch at least one notch and a separating gap in each effective working stroke of the punch. A separating tool is formed by at least two independently disposed separating punches... | 08/26/1986 |
| 4601190 | Drawing installation in a press With workpieces to be drawn, especially large-area body parts or sinks, the possibilities of tearing the walls, respectively, undulated surface structure exists within the area of the corner formation. The present invention is therefore predicated on the ... | 07/22/1986 |
| 4580674 | Control arrangement for the actuating pressure applied to a clutch and/or brake of a mechanical press A control arrangement for a clutch and/or brake of a press, with the control arrangement including at least one of a clutch cylinder piston unit and a brake cylinder piston unit which opposes braking forces until a desired rotational speed is reached. The... | 04/08/1986 |
| 4568812 | Device for electric longitudinal-seam mash resistance welding Device for the semiautomatic or fully automatic electric longitudinal-seam mash resistance welding of can bodies from overlapping, cut-to-size sheet-metal blanks rolled into sidewalls (20), with a guide arranged in front of the welding site for determinin... | 02/04/1986 |
| 4557133 | Press unit having gripper rails to be exchanged at the same time as the tools A press unit having gripper rails to be exchanged at the same time as the tools, wherein in hollow spaces of the ends of the gripper rails, means are inserted for the locking of the form-fitting or toothed connection of gripper rails on the side of the pr... | 12/10/1985 |
| 4554430 | Electrical power source for resistance welding apparatus An electrical energy source with a static inverter and a welding transformer (12) for a resistance welding machine comprises a first static frequency converter (10) made up of semiconductor elements, the alternating output voltage of which has a frequency... | 11/19/1985 |
| 4533029 | Clutch and brake device for presses, punches, and the like A clutch and brake device for presses, punches, or the like, wherein a drive shaft of the presses or punches may be connected selectively to a flywheel employing a friction clutch and may be braked with respect to a frame of the press or punch by a fricti... | 08/06/1985 |
| 4530148 | Tool changing mechanism A tool changing mechanism for an automatic changing of tools for a press ram and die of a forming press such as a multistage metal forming press. The tool changing mechanism includes a magazine having holders for accommodating individual tools. The indivi... | 07/23/1985 |
| 4516447 | Numerically controlled groove-stamping machine A numerically controlled groove-stamping machine which includes an indexing unit rotatable stepwise by means of a positioning drive about a rotational axis as a function of a stroke of a punch of the groove-stamping machine. The indexing unit is adapted t... | 05/14/1985 |
| 4499750 | Drawing device for presses with mechanically driven drawing ram In a drawing device for presses with a mechanically driven drawing ram (24) and with a sheet metal holder (5) exerting its holding force, acting on the metal sheet (27) and counteracting the drawing direction, by way of a pressure plate (7) by means of a ... | 02/19/1985 |
| 4461068 | Automatic slotting apparatus with tool changing device Automatic sliding apparatus is provided for automatically stamping stator and rotor laminations for electric motors from workpiece blanks. To accommodate utilization of a plurality of sets of tool dies on a single driveable press ram, a tool changing devi... | 07/24/1984 |
| 4440278 | Clutch and brake device for presses, punches and the like A clutch and brake device for presses, punches, or the like, wherein a drive shaft of the presses or punches may be connected selectively to a flywheel by way of a friction clutch and may be braked with respect to a frame of the press or punch by a fricti... | 04/03/1984 |
| 4419929 | Press drive A drive arrangement for a high speed mechanical press, especially a high speed cutting press, wherein the press drive includes two eccentric shafts connected by connecting rods with a slide. Mass balancing weights are provided for enabling a complete dyna... | 12/13/1983 |
| 4232575 | Arrangement for punching out circular blanks An arrangement for notching or slotting circular blanks so as to produce stacks of rotor and/or stator laminations for electric machines. At least one slotting machine is provided which in a first direction is adjustable radially with respect to a spatial... | 11/11/1980 |
| 4192169 | Apparatus for driving a pair of gripper bars in a longitudinal direction An apparatus for driving a pair of gripper bars of a multi-stage press in a longitudinal direction of the press which includes a pair of driven levers disposed symmetrically to a longitudinal center plane of the press, which levers are engageable with a s... | 03/11/1980 |
| 4189269 | Workpiece transport device A workpiece transport device which includes at least one gripper tong arrangement driven in comformity with a work rhythm of a machine tool which is required to be charged and/or discharged. The gripper tong arrangement grips a marginal area of the workpi... | 02/19/1980 |
| 4176536 | Device for producing a bead on the circumference of a hollow cylinder A device for producing a bead on a circumference of a hollow cylinder seeks to minimize the risk of unwanted deformations of the hollow cylinder such as wrinkles or bulges which can result when an area of the hollow cylinder to be beaded is forced inward ... | 12/04/1979 |
| 4162734 | Aligning and stacking arrangement An arrangement for aligning and stacking laminations and for transporting formed stacks of laminations with the laminations being provided with a circular inner and/or outer circumference and having stamped patterns defining a plurality of stampings distr... | 07/31/1979 |
| 4150616 | Method of controlling the speed of a mechanical press A speed controlling arrangement and method for a mechanical press. The press has a crankshaft revolution which can be subdivided in principle into a discharging and charging region and a working region with the speed of the mechanical press being controll... | 04/24/1979 |
| 4138005 | Mechanical press drive arrangement A drive arrangement for a mechanically driven press with the press including at least one drive shaft mounted in a press frame and at least one eccentric or crank arranged on the drive shaft with a clutch being operatively connected to the drive shaft for... | 02/06/1979 |
| 4135446 | Press arrangement A press arrangement which includes a press table, a punch and an adjusting arrangement for selectively adjusting the distance between the press table and punch. A pressure space is provided in the punch which selectively communicates with a pressure mediu... | 01/23/1979 |
| 4125072 | Workpiece turning device A workpiece turning device is provided for an automated press train of the type where workpieces are turned after being withdrawn from a working chamber of a press and are then subsequently fed to a further press. The turning device includes separately mo... | 11/14/1978 |
| 4120185 | Control system for operating steps of a press and/or transfer mechanism A control system for controlling operating steps of a press and/or transfer mechanism therefor in dependence upon the position of a drive shaft of a drive mechanism of the press. The system includes a coded pulse generator supplying coded pulses indicativ... | 10/17/1978 |
| 4114489 | Dividing means control device A control arrangement for a dividing apparatus for dividing or cutting continuously fed strip stock of variable thickness. The dividing apparatus includes a drive arrangement for driving a cutting unit in a horizontal and vertical direction with an arrang... | 09/19/1978 |
| 4114490 | Strip material dividing device A dividing apparatus for dividing, cutting, or severing a continuously running strip material with the apparatus including an articulated drive for effecting a stroke movement of a cutting unit. The articulated drive is constructed as a quadrangular linka... | 09/19/1978 |
| 4111086 | Aligning and stacking arrangement An alignment and stacking arrangement for stampings manufactured in a continuous stamping operation by a stamping machine having a punch and associated punch matrix. At least one stacking channel is arranged in the punch matrix for receiving the stampings... | 09/05/1978 |
| 4108320 | Aligning and stamping arrangement An arrangement for aligning and stacking laminations for electrical equipment and for transporting formed stacks of laminations with the laminations being fed individually in the same position to a stack former which maintains the relative positions of th... | 08/22/1978 |
| 4108031 | Aligning and stacking arrangement An alignment and stacking arrangement for stampings manufactured in a continuous stamping operation by a stamping machine having a punch and associated punch matrix. At least one stacking channel is arranged in the punch matrix for receiving the stampings... | 08/22/1978 |
| 4067458 | Apparatus for the unstacking and transportation of blanks Apparatus for the unstacking and transportation of blanks into a subsequently arranged operating chamber of a processing machine, wherein the blanks are transferred from a stack of blanks, by hoisting devices, especially suction bridges, includes a suspen... | 01/10/1978 |
| 4062213 | Control system for the initiation and/or termination of operating steps of perforating, punching, cutting and shaping presses A control system for controlling operating steps of a press including a coded pulse generator for providing a coded pulse output in dependence upon the position of a drive shaft of a press drive and a signal generator responsive to the stroke rate of the ... | 12/13/1977 |
| 4046264 | Apparatus for stacking articles in sheet form for electrical machines Apparatus for stacking and intermittently discharging stacks of sheet material for electrical machines and the like. A plurality of mandrels are provided which are successively movable into a position for forming stacks of sheets continually supplied by a... | 09/06/1977 |
| 4037730 | Press line with workpiece feeding device A press line having a transfer system for transferring workpieces from a processing station of one press to a processing station of a subsequent press. The transfer system includes a track extending over the entire interspace between the two successive pr... | 07/26/1977 |
| 4036087 | Apparatus for cutting strip material into lengths and for stacking the cut lengths of strip material Apparatus for processing flat strip material including cutting apparatus for cutting the material and to strip portions and stacking apparatus having air cushion means for stacking the strip portions one on top of the other. An accelerating anchoring roll... | 07/19/1977 |
| 4024747 | Apparatus for conveying punched-out components Apparatus for the conveyance of components punched out from a strip of material with the formation of a punched grid out of the working area of a press includes a feeding mechanism for conveying the strip of material into the working area of the press. At... | 05/24/1977 |
| 4013003 | Press with toggle joint drive mechanisms A plurality of toggle drive mechanisms are provided for transferring rotational shaft movement as linear movement of a press ram guidably supported in a press frame. Each of the toggle joint drive mechanisms includes a triangular shaped drive member eccen... | 03/22/1977 |
