Did You Know...
...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.
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| Number | Title | Issue Date |
| 6979153 | Deep-grooving insert having stepped cutting edge A deep-grooving chip-forming cutting insert includes a rear mounting portion, a front cutting portion, and a pair of side walls, each side wall extending along the front and rear portions. The front cutting portion includes a front end surface, a top surface, and a ... | 12/27/2005 |
| 6786125 | Cutter device for a printer A cutter device has a movable blade, a stationary blade, and a clutch mechanism having a driven gear mounted for undergoing rotation in clockwise and counterclockwise directions and a driving gear for rotationally driving the driven gear about a rotational axis. A c... | 09/07/2004 |
| 6120015 | Dual sheet hole punching system for the output of reproduction apparatus An on-line sheet hole punching system for punching holes in sheets outputted by a printing system, to eliminate pre-punched sheets, with a common sheet entrance path, two separate but closely vertically superposed sheet paths, a gating system alternately ... | 09/19/2000 |
| 5749277 | Cutting mechanism for receipt printer The present invention features a cutting mechanism for a receipt-printing machine, which has paper dispensed from a paper-supply roll. The cutting mechanism has a "v"-shaped, guillotine blade that is held in a blade holder. The blade is driven via the bla... | 05/12/1998 |
| 5737989 | Hydraulic paper cutting machine An improved hydraulic paper cutting machine for preventing paper contamination and ensuring operation safety. A hydraulic cylinder is disposed below a machine body and located below the sheet of paper to be cut. The paper will not be contaminated even if ... | 04/14/1998 |
| 5570678 | Cement siding shearing tool A shearing tool for cutting cement siding which includes upper and lower blade holders. Each blade holder has first and second ends and an elongated slot extending substantially therebetween. The blade holders are positioned so that the slots face each ot... | 11/05/1996 |
| 5163350 | Paper sheets punching apparatus A paper punch and binding apparatus has two punch mechanisms, one for punching round holes in a paper sheets stack and one for punching rectangular holes in another paper sheets stack. A single lever or crank simultaneously operates and drives a series of... | 11/17/1992 |
| 5042345 | Shearing machine The vertically reciprocal upper blade assembly of a sheet metal squaring shear is activated in a substantially vertical path past a fixed lower blade by means of one or more reciprocal rotary hydraulic actuators. The output drive shaft of the hydraulic ac... | 08/27/1991 |
| 4944221 | Articulated lever cutting and forming press The invention relates to an articulated lever press consisting of a press stand (1.1) and a frame-shaped press slide (2.1), the slide (2.1) possessing a hydraulic cylinder drive (2.12) which is arranged on it and is connected to the multi-articulated supp... | 07/31/1990 |
| 4903560 | Punching devices A punching device for automatic punching machines for the punching of paper, cardboard and the like, comprising: a driving mechanism for a top shoe; such as a rocking lever drive, elliptical cam drive, or wedge-form transmission; a stationary bottom shoe ... | 02/27/1990 |
| 4850272 | Articulated-lever cutting and forming press The invention relates to an articulated lever press consisting of a press stand (1.1) and a frame-shaped press slide (2.1), the slide (2.1) possessing a hydraulic cylinder drive (2.12) which is arranged on it and is connected to the multi-articulated supp... | 07/25/1989 |
| 4763551 | Punching devices A punching device for automatic punching machines for the punching of paper, cardboard and the like, comprising: a driving mechanism for a top shoe; such as a rocking lever drive, elliptical cam drive, or wedge-form transmission; a stationary bottom shoe ... | 08/16/1988 |
| 4679473 | Shearing machine A shearing machine is so arranged that the ram, when vertically moved, is resiliently guided by spring guides and is driven in such a manner as to be kept urged into contact with the guides. The shearing machine is provided with hold-down clamps which can... | 07/14/1987 |
| 4660452 | Elbow lever sheet metal cutting press consisting of a press frame and a press ram An elbow lever sheet metal cutting press equipped with a pressure medium cylinder drive located between elbow lever systems, which suspend the press ram from the press frame. Adjustable lateral guides are attached along the columns of the press frame. A p... | 04/28/1987 |
| 4541405 | Hydraulic stone shaping machine A machine for cutting a block of stone so as to form a precision straight edge about its perimeter. The machine comprises a stationary base which supports a back-up member which serves as an anvil. Reciprocally mounted on the base is an inside upright ass... | 09/17/1985 |
| 4485708 | Punching devices A punching device for automatic punching machines for the punching of paper, cardboard and the like, comprising: impulsion means for a top shoe; such as an eccentric cam drive; a stationary bottom shoe supporting a counterpunch; a movable top shoe support... | 12/04/1984 |
| 4252041 | Guillotine shearing machine The shearing machine comprises a stationary apron and a moving apron carried by lateral upright members and provided with cutting blades, the moving apron being guided at both ends by means of roller devices adapted to cooperate with guide ramps mounted o... | 02/24/1981 |
| 4136593 | Front operated rake adjustment assembly A rake angle adjustment assembly operated from the front of a shear machine to adjust a fluid control valve which effects a rake angle adjustment; such assembly being intimate with the movable ram being adjusted in such a manner that the achieving of the ... | 01/30/1979 |
| 4027567 | Rake angle control for shears and the like The invention relates to hydraulically powered shears for metal sheets and plates and particularly to an improvement in the means for adjusting and controlling the rake angle or slope of the movable shear knife in such machines. In the present disclosure ... | 06/07/1977 |
| 4014232 | Die-set assembly A partition slotting machine having a punch and die assembly built as a unit to be separable from the machine for repair, replacement and adjustment of punch, die and operating parts away from the machine, so that the machine may continue operating by ins... | 03/29/1977 |
| 3945287 | Sheet shear A metal plate shears for cutting large sheets of metal includes a fixed blade, and a movable blade cooperable therewith. The movable blade is mounted on a plate having a plurality of circular apertures therein. Discs are mounted in these apertures, the di... | 03/23/1976 |
| 3937260 | Log splitter A log splitter and method for splitting logs, rails or the like, comprising a pair of double acting fluid cylinder operators in a parallel spaced side-by-side arrangement, which operators are interconnected by a butt plate extending therebetween against w... | 02/10/1976 |
