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...that "patent leather" got its name because the process of applying the polished black finish to leather was once patented?
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| Number | Title | Issue Date |
| 5749290 | Press transfer apparatus A multi-station press is provided with a press transfer device that engages articles at the press stations after processing and transfers the articles to the next station before the press performs its next press cycle. The press transfer device includes a... | 05/12/1998 |
| 5372062 | Method and a press for compressing material having two opposed transfer elements exacting a greater pressing force on the material during a forward motion than the pressing force exerted during a return motion A method and press for pressing material by way of feeding the material into a gap formed between two pressing surfaces, in which gap the cross section of the material flow is tapered in the forward transfer direction of the material. The material is pres... | 12/13/1994 |
| 5209341 | Transfer device in a press Workpieces are transported step-by-step by of transport bars which are provided with grippers and which are longitudinally, transversally and vertically displaceable. In addition to their transversal movement in the horizontal direction, the transport bar... | 05/11/1993 |
| 4693361 | Transfer press A transfer press having workpiece gripping finger units and workpiece rests both respectively mounted in workpiece carrying -in and -out portions and idle stations defined between adjacent moving bolsters. Each of the finger units is mounted turnably up a... | 09/15/1987 |
| 4577748 | Press mounted transfer apparatus A transfer apparatus has longitudinal, transverse and vertical movements. Transfer bars are mounted on a frame which moves longitudinally as a unit. The bars move transversely on the frame. A drive box mounted on a side of the frame has transverse and lon... | 03/25/1986 |
| 4359153 | Three axis transfer apparatus A transfer has gripper bars capable of grasping, lifting and transferring a work piece. The grasping and lifting motions are actuated by face cams. The face cams act through rocker arm linkages connected to rotatable rods having arms connected to the grip... | 11/16/1982 |
| 4256218 | Three axis transfer apparatus A transfer has gripper bars capable of grasping, lifting and transferring a work piece. The grasping and lifting motions are actuated by face cams. The face cams act through rocker arm linkages connected to rotatable rods having arms connected to the grip... | 03/17/1981 |
| 4198845 | Transfer device A transfer device for transferring workpieces progressively from station to station in a press by means of mechanical linkages actuated by the press ram. The linkages have a brake mechanism strategically located and uniquely operative to prevent destructi... | 04/22/1980 |
