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| Number | Title | Issue Date |
| 4144785 | Parting tool A punch and die assembly specifically adapted for use as a parting tool is disclosed. The punch has a working tip of rectangular cross section formed with a radius curved convex shear bottom. The punch mates with the die such that the punch side wall to d... | 03/20/1979 |
| 4142848 | Apparatus for manufacturing a lockable carton A hinged carton integrally molded of polystyrene foam and adapted to be locked shut by a flap extending upwardly from the bottom part of the carton inside a side wall of the carton cover and carrying one or more prongs so that the latter will be biased ou... | 03/06/1979 |
| 4136592 | Apparatus for one-pass punching of beams During passage of an I-beam through a punching press for punching holes vertically through its web, holes are also punched through its flanges by horizontally acting punches of the present invention. Four C-shaped punching heads are provided for the flang... | 01/30/1979 |
| 4130040 | Cutter assembly A cutter assembly is disclosed for accurately profiling the free end of multi-conductor flat flexible cable for termination by known electrical connectors. The assembly includes a pair of fixed, parallel, spaced side shears and a transverse end shear. A c... | 12/19/1978 |
| 4123956 | Self-adjusting punch device The present invention relates to a self-centering device for blanking out or punching holes through relatively thin gauge materials and particularly elastomeric materials such as rubber or plastic.... | 11/07/1978 |
| 4103574 | Tool assembly, method of manufacture and components thereof A tool assembly in which the tool retainers are provided with spring loaded plungers which snap into place in detents provided in the tools and are then locked in the detents by set screws engaging the shanks of the plungers. This prevents inadvertent dis... | 08/01/1978 |
| 4086837 | Stamping and cutting die-set with interchangeable die-plates A stamping and cutting die-set having exchangeable die plates consisting of an upper and a lower part connected by means of guides and serving to secure at least one cutting die locked by means of at least one clamping system. Two centering pins (3) with ... | 05/02/1978 |
| 4085639 | Blanking die and holder construction for punch presses A blanking die comprises a relatively thin die plate having a cutout into which the punch of the press, upon blanking operation, forces the material to be cut to form the required part blank. A holder of sturdy construction is provided onto which the thin... | 04/25/1978 |
| 4048890 | Punching tool die The die of a punching tool has a body of relatively soft and elastically deformable material with a through hole in extension of a through hole of the die but of smaller section, corresponding to that of a punch which passes through the die with a clearan... | 09/20/1977 |
| 4040320 | Punching machines A punching machine for use in punching holes in the sides of articles incorporating two C-shaped assemblies forming punching tool supports and guided within the machine in such a way that they can be displaced and moved away from each other. Means are pro... | 08/09/1977 |
| 4022089 | Container trimming apparatus Apparatus is disclosed for trimming the flange of a drawn metal container such as a food or beverage container so as to place it in condition for having the lid applied thereto. The apparatus includes a fixed trim punch secured to the base of a press, wit... | 05/10/1977 |
| 3985056 | Multiple tool holding punching unit This disclosure relates to a punching apparatus for perforating sheet materials, and comprises a multiple tool holding unit mounted on a press table beneath a vertically movable press ram. The tool holding unit includes a horizontally extending upper arm ... | 10/12/1976 |
| 3982458 | Die set A die set includes a first die holder having a first die detachably fixed thereto, and a second die holder having a second die detachably fixed thereto. The first die holder is slidable towards and away from the second die holder. The second die is suppor... | 09/28/1976 |
| 3946632 | Register control punch Hole punching apparatus for punching registration holes for graphic arts sheets, steps, etc. including table support means (e.g., a graphic artist's light table) having a grooved guide channel for registration pins along one side and a second similar groo... | 03/30/1976 |
| 3939747 | Profile press and precision cutting apparatus with a pressure multiplier Profile press and precision cutting apparatus having a pressure multiplier comprising a cutting die loosely supported by a base plate, the cutting die being held in parallelism with the cutting tool by a guide means fixed to the piston rod, which means as... | 02/24/1976 |
