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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 7673563 | Sheet-transporting apparatus In the case of a sheet-transporting gripper configuration in a sheet-processing machine, e.g. printing machine, it is provided that a low-mass gripper housing contains thin side walls enclosing a gripper shaft such that imaginary extensions of leaf springs provided ... | 03/09/2010 |
| 7574958 | Printing material sheet gripper and method for producing the sheet gripper In a sheet gripper, a dimensionally stable base material and an elastic clamping surface material are connected to each other in a form-fitting manner. The elastic clamping surface material functions as a clamping surface of the sheet gripper. This forms a sheet gri... | 08/18/2009 |
| 7370580 | Control roller having speed-dependent pressing force In an apparatus for adapting the pressing force of a control roller on a control can in a sheet-processing machine by a torsion spring, the apparatus either changes the effective spring length or the spring stiffness as a function of the rotational speed of the shee... | 05/13/2008 |
| 7347143 | Air blowing device for printing press An air blowing device for a printing press includes a plate cylinder, blanket cylinder, impression cylinder, air blowing equipment, air suction equipment, and cover. The plate cylinder is rotatably supported. Ink from an inking device and dampening water from a damp... | 03/25/2008 |
| 7334790 | Apparatus for conveying sheets through a rotary press Sheets are conveyed through a rotary press with linear travel grippers. The novel conveying apparatus prevents collisions between the grippers and printing unit cylinders. The grippers are fixed to circulating links to convey a sheet through a nip between two cylind... | 02/26/2008 |
| 7325493 | Sheet-fed rotary printing press having a three-drum reversing device and method of transporting a sheet through a three-drum reversing device A sheet-fed rotary printing press for selective recto printing and recto and verso printing includes a three-drum reversing device having three cylinders cooperatively disposed behind one another between respective impression cylinders of two adjacent printing units... | 02/05/2008 |
| 7267053 | Delivery device for a sheet-processing machine The invention relates to a delivery device for a sheet-processing machine. The object of the invention is providing a delivery device on a sheet-fed rotary printing machine, that can be universally used and permits quality control of the printed and/or laminated she... | 09/11/2007 |
| 7247344 | Method and apparatus for applying surface treatments to photosensitive printing elements during thermal development The present invention is directed to a method and an apparatus for applying a surface treatment composition to a photosensitive printing element during thermal processing. A photosensitive printing element is contacted with a web of absorbent material that is capabl... | 07/24/2007 |
| 7156021 | Machine for processing sheets of printing material A machine for processing sheets of printing material has a cylinder for transporting the sheets and sheet supports which are mounted such that they can be rotated about a sheet support axis of rotation and in each case contain supporting segments for pressing the sh... | 01/02/2007 |
| 7152528 | Digital printing machine The invention concerns a digital printing machine for sheet printing with a digital printing mechanism with free format in the peripheral direction, an intermediate cylinder which is connected downstream of the digital printing mechanism and is at least partially co... | 12/26/2006 |
| 7118104 | Gripper system for a machine which processes printing material sheets A gripper system for a machine that processes printing material sheets has a gripper with a first clamping surface and a gripper pad, for cooperating with the gripper, with a second clamping surface. One of the two clamping surfaces is formed with a surface relief. ... | 10/10/2006 |
| 7055430 | Machine for sheet-fed rotary printing or sheet coating A machine for sheet-fed rotary printing or sheet coating has a sheet gripper system, an upstream feed system, and an upstream feeder. A surface refinement station for the sheet is disposed downstream of the feeder and upstream of a transfer of the sheet to the sheet... | 06/06/2006 |
| 7044055 | System for thermal development of flexographic printing plates The present invention is directed to a method and a system for forming a relief image on a photosensitive printing element. The system comprises an enclosure housing a conveyor and a heatable roller. The photosensitive printing element is positioned on a continuous ... | 05/16/2006 |
| 7000541 | System and method for interleaf sheet and/or plate sheet removal and/or transport for use with a printing apparatus The present invention relates generally to systems and methods that remove an interleaf sheet interposed between plate sheets from a material stack used, for example, in a computer-to-plate imaging system and/or environment. Embodiments of the system and method can ... | 02/21/2006 |
| 7000917 | Sheet-guiding device in a sheet-processing machine A sheet-guiding device in a sheet-processing machine, in particular a sheet-fed rotary printing press, includes gripper devices disposed on revolving components of the sheet-processing machine for guiding the sheets to be printed on an air cushion formed by blast ai... | 02/21/2006 |
| 6976427 | Gripper system In a gripper system having grippers disposed in a row and interspaces between the grippers and hold-downs for holding down in each case a free edge of a printing material sheet gripped by the grippers, the hold-downs being disposed to project into the interspaces an... | 12/20/2005 |
| 6877427 | Quality control device A quality control device includes a suction box, at least one gripper which can be displaced along a suction surface of the suction box, and a CCD camera. A belt, which can be displaced in a sheet transport direction, is disposed on the suction surface of the suctio... | 04/12/2005 |
| 6746014 | Sheet-like material guiding device of a sheet-fed printing press A sheet-fed printing press comprises a running transport chain, gripper devices supported by the transport chain and each having a gripper and a gripper pad for gripping a sheet, an inspection device for inspecting the sheet gripped and transported by the gripper de... | 06/08/2004 |
| 6736391 | Method and apparatus for further conveyance of flat objects arriving in a lamellar flow In each case at least two objects arriving in a lamellar flow (14) are grasped from the side by a conveyor clamp (22) and conveyed further while maintaining their mutual position. The at least two objects forming a section are held by a single conveyor... | 05/18/2004 |
| 6722276 | Devices for turning sheets in a sheet-fed rotary printing machine Devices for turning sheets in a rotary printing machine are described. The devices have a storage drum for handling sheets, which are each held by a holding device, and a turning drum is disposed downstream of the storage drum and has a holding device for engaging a... | 04/20/2004 |
| 6722274 | Pneumatic gripper designed for performing a variable lowering movement depending on the tensioning stroke thereof A gripper for screen printing applications comprises a gripper body supporting a tensioning assembly comprising a gripping element designed for gripping the edge of a fabric to be tensioned on a frame, and a bottom abutment cam providing a variable lowering stroke b... | 04/20/2004 |
| 6487966 | Gripper for conveying sheets in silk-screen printing machines A gripping device for conveying sheets in silk-screen printing machines. The gripping device comprises a box-like gripping bar having an outwardly and upwardly slanted rear wall provided with a longitudinally extending stepped edge at the upper side for r... | 12/03/2002 |
| 6386816 | Printed matter transport device A printed matter transport device. Printed matter is gripped by a gripping mechanism of a chain and made to travel along a guide rail, to improve the durability of the guide rail and chain, to prevent misalignment, falling out and damage when an external ... | 05/14/2002 |
| 6349935 | Device for feeding sheets to a sheet-processing machine A device for driving a pregripper having a swivellably mounted main lever and a swivellably mounted guide lever, and a gripper bar mutually coupling the main lever and the guide lever, includes a cyclical swivel drive for the main lever, and an eccentrica... | 02/26/2002 |
| 6339990 | Gripping device, particularly for automatic printing and/or inserting machines The invention concerns on the one hand a gripping device (10), particularly for automatic printing and/or inserting machines, with a first and second gripping element (22, 24) of which at least one gripping element (22) can be moved relative to the other ... | 01/22/2002 |
| 6257139 | Sheet processing machine Printed sheets are fed into a sheet processing machine where they are separated into partial sheets by being cut longitudinally. The partial sheets are separated laterally from each other by gripper components. Each of the partial sheets can have its lead... | 07/10/2001 |
| 6089158 | Printing press with delivery including independently mounted sprockets A chain delivery assembly for withdrawing sheets from a rotating cylinder of a sheet-fed offset printing press includes first and second spaced apart sprockets independently mounted for rotation about a common axis which is parallel to the axis of the rot... | 07/18/2000 |
| 6036187 | Sheet processing machine A sheet processing machine utilizes chain conveyors, each of which are provided with a plurality of chain gripper devices, to convoy sheets. As the sheet are conveyed, they are cut to proper size and are inspected. Each sheet is separated into several par... | 03/14/2000 |
| 6000336 | Applicator cylinder with sleeve having recesses therein to receive grippers in a sheet-fed press A device for applying a liquid to a print carrier sheet in a sheet-fed rotary printing machine. The device has an applicator cylinder, an impression cylinder assigned to the latter and at least one gripper. The applicator cylinder carries a cylinder sleev... | 12/14/1999 |
| 5901955 | Gripper seat A rotatable gripper drum includes a seat mounted on the drum and a gripper supported on the drum for pivotal movement relative to the seat between an open position and a closed position. The seat is made from a resilient material and includes a body porti... | 05/11/1999 |
| 5824388 | Clamping apparatus for imprinting disk-shaped information medium Clamping apparatus for disk-shaped information medium having a central hole, the disk-shaped information medium having a surface upon which information is to be printed, including a baseplate having holes; a slider guidably mounted on the baseplate for ce... | 10/20/1998 |
| 5775224 | Sheet delivery in printing presses Sheet delivery in a printing press, wherein, at acceptance of a sheet, a gripper bar of the delivery has a speed which is increased in comparison with a sheet-surrendering or transferring gripper bar includes delivery chains, and a drive for driving the c... | 07/07/1998 |
| 5758576 | Gripper bar for deliveries of printing presses Gripper bar for a delivery of a printing press, the gripper bar being carried at respective ends thereof by transport chains and having a multiplicity of grippers with gripper fingers for transporting sheets includes a hollow profiled member having a boxl... | 06/02/1998 |
| 5732628 | Sheet-conveying drum for printing machines A sheet-conveying drum for use between units in a printing machine is provided with a plurality of gripper bridges arranged substantially circumferentially symmetrically on the drum surface. The gripper bridges hold the paper on the drum and include gripp... | 03/31/1998 |
| 5701819 | Sheet transfer drum Sheet transfer drum mounted between printing units within side walls of a rotary printing press includes two gripper bars arranged symmetrically on a circumference of the sheet transfer drum so as to be located diametrically opposite one another on a y-ax... | 12/30/1997 |
| 5688058 | Process and apparatus for the typographical labeling of two sides of printed products The printed products, overlapping one another in an imbricated manner, are moved, by means of the conveying device, past the first printing station in a conveying direction, where the first outer side of the printed products is provided with typographical... | 11/18/1997 |
| 5596932 | Process and apparatus for the typographical labeling of folded printed products on an inner side A process and an apparatus for the typographical labeling of folded printed products, such as folded individual sheets or folded publications, on an inner side, in particular in the border region of the inner side, is designed for carrying out this typogr... | 01/28/1997 |
| 5575213 | Feeding unit A stencil discharging unit of a rotary stencil printing machine has a feeding unit and a stencil discharging container. The feeding unit has a first feeding means and a second feeding means. The first feeding means that is on the upper side includes group... | 11/19/1996 |
| 5575209 | Pregripper for a printing machine A pregripper for transferring sheets from a sheet feeder to a feed drum or impression cylinder of a printing machine is provided. The pregripper is disposed below the sheet feeder and includes a hollow tube which has a substantially pear-shaped cross-sect... | 11/19/1996 |
| 5566614 | Adjusting device for a gripper opening cam in a chain delivery of a sheet-fed printing press Adjusting device for a gripper opening cam in a chain delivery for delivering sheets in a sheet-fed printing press, wherein grippers disposed on gripper carriages of endlessly revolving chains have a cam roller running onto the gripper opening cam for ope... | 10/22/1996 |
