...that on Dec. 15, 1836, the Patent Office was completely destroyed by fire? Lost were some 7,000 models, 9,000 drawings, and 230 books plus all records of patent applications and grants.
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| Number | Title | Issue Date |
| 7331281 | Press with vertically reciprocated frame A press has an upper traverse, a lower traverse below the upper traverse, and vertical frame elements extending between the traverse, fixing same together against relative movement, and forming a rigid frame with the upper traverse and lower traverse. A central trav... | 02/19/2008 |
| 6345526 | Punching and stamping machine and method of making parts using same A punching and stamping machine has a movably guided die plate frame, in which an eccentric shaft for the drive of the die is simultaneously disposed. The die plate frame is moved by means of a plate cam which is directly coupled with the eccentric shaft ... | 02/12/2002 |
| 6094962 | Method for profile-kneading workplaces For the profile kneading of workpiece in strand from (semiproducts) which are transported along a central axis into a working station (profile kneading machine) at least two dies situated opposite one another in pairs for working on the surface of the wor... | 08/01/2000 |
| 5943900 | Die set for a stamping and forming machine A die set (24) for use with a stamping and forming machine (10) includes two opposed tooling plates (50, 52) arranged to undergo reciprocating motion with respect to a base plate (40) toward and away from a strip of material (30) that is fed along a feed ... | 08/31/1999 |
| 5894753 | Method of producing splines on a shaft In a method of producing splines on a shaft, cold deformation without removal of chips is effected on the outside face of a small-thickness tube in a single operation. The cold deformation includes hammering the small-thickness tube by a conjugate and sim... | 04/20/1999 |
| 5852970 | Underdrive opposing action press The invention includes a press having two slides disposed in opposed relationship to each other with a single crankshaft connected to each slide whereby rotation of the crankshaft causes each slide to move toward and away from the other slide. A drive mec... | 12/29/1998 |
| 5428982 | Machine tool with cam gear, in particular for punching and shaping the lead-outs of integrated circuits The machine tool has a frame (10) and in it, a cam gear with two pairs of cam tracks with complementary curve shapes. The tool actuation takes place by means of two levers (3a, 3b) which are hinged to the side on a clamping plate (8). Each of these levers... | 07/04/1995 |
| 5373765 | Apparatus for driving two tool parts for punching, cutting and stamping An apparatus for driving upper and lower tool parts for punching, cutting and stamping, and more particular to such an apparatus using a rotary screw rod and a nut member threadedly engaging with the screw rod so as to move up or down therealong. The appa... | 12/20/1994 |
| 5127252 | Apparatus for the working of wire pieces and the use of such apparatus Apparatus for clamping and working wire pieces has two separate rotary shafts (16) of the clamping levers (18 and 20), arranged symmetrically and with the axis of intake of the wire (82) and the direction of upsetting or hammering at right angles to the a... | 07/07/1992 |
| 5060500 | Apparatus for automatically forming a pointed end of raw pipe to be drawn Apparatus for automatically forming pointed ends for raw metal pipes such as aluminum pipes subject to a drawing process, the pointed end of the pipes being of a reduced diameter convenient for the drawing process. A transporting device moves each raw pip... | 10/29/1991 |