In 1608, Dutch eyeglass maker Hans Lipperhey filed the first patent for a working telescope. The patent was denied.
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| Number | Title | Issue Date |
| 8047110 | Positioning system and carriage assembly for converting machines A system for slitting a web includes a carriage assembly having an elongate housing including a first wall, where the first wall defining a longitudinal axis. A first plurality of rails can be mounted on the first wall, wherein the plurality of rails extends paralle... | 11/01/2011 |
| 7832319 | Blade clamp assembly A blade clamp assembly for retaining a rotary blade on the arbor of a rotary tool includes a blade washer for engaging the blade to hold the blade on the arbor and a clamp assembly threaded into the arbor to clamp the blade washer against the blade. The clamp assemb... | 11/16/2010 |
| 7509901 | Coupling of the cartridge of a cutter holder for industrial cutting A system for engaging and locking the cartridge on the body of a cutter holder adapted to equip machines for the industrial cutting of flexible laminates, comprising a slider with a dovetail profile on the lower portion of the cutter holder body, the head portion of... | 03/31/2009 |
| 7415915 | Cutting system having an interchangeable rotary blade cartridge A cutting system that includes a rotary blade cartridge that can be interchangeably used with a variety of cutting tools is disclosed. The cartridge houses a rotary blade assembly that is maintained in a secure and safe retracted state and that can be activated when... | 08/26/2008 |
| 7343841 | Blade clamp assembly A blade clamp assembly for retaining a rotary blade on the arbor of a rotary tool includes a blade washer for engaging the blade to hold the blade on the arbor and a clamp assembly threaded into the arbor to clamp the blade washer against the blade. The clamp assemb... | 03/18/2008 |
| 7299726 | Method and unit for transversely cutting cigarette portions or similar on a filter assembly machine A method and unit for transversely cutting cigarette portions or similar on a filter assembly machine, whereby a cigarette portion is fed transversely through a cutting station to intercept a rotary circular blade, which is maintained in a work position by an arm mo... | 11/27/2007 |
| 7168502 | Electric power tool with locking mechanism An electric power tool has a motor-driven circular tool that can be clamped by means of a clamping device. A mechanical braking device (2) serves to brake the tool. A safety element (4) prevents improper handling of the electric power tool. In a safety... | 01/30/2007 |
| 7117705 | Adjustable cutoff A cutting assembly (20) is removably supported on a sheet bending brake (24) for cutting a work piece (22). The cutting assembly (20) includes a cutter body (32), and a first (42) and a second cutting disk (48), each ... | 10/10/2006 |
| 7000517 | Machine for cross cutting a material web A machine for cross cutting a material web has a main frame part unitarily formed with a pair of transversely spaced main sides and with at least one main traverse extending transversely between the main sides and a secondary frame part unitarily formed with a pair ... | 02/21/2006 |
| 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 |
| 6868766 | Knife holder A knife holder is provided which can be readily disassembled and maintained while remaining in a knife bank. Fasteners keep the cylinder housing and blade housing securely connected and are aligned parallel to the longitudinal axis of the knife holder for easy acces... | 03/22/2005 |
| 6857939 | Dicing machine with interlock A dicing machine including a flange cover which covers the blade and is divided into two such that a first cover is openable. An interlock device is provided so that a blade attaching and detaching device cannot be attached when the first cover is at the closing pos... | 02/22/2005 |
| 6843627 | Wrenchless blade clamp assembly A wrenchless clamp assembly is provided to secure a tool disc, such as a circular saw blade, to a shaft of a power tool. The blade clamp assembly includes an outer flange positionable against an outer side of the blade and a manually tightenable click bolt that incl... | 01/18/2005 |
| 6842988 | Device in a portable power tool A locking assembly for a portable, engine-powered, hand tool, such as a clearing saw. To facilitate removal and installation of a rotatable cutting tool (13), a rotatable shaft (11) driving the cutting tool is locked against rotation by a movable locki... | 01/18/2005 |
| 6813984 | Attaching device A device for attaching two units (17,18) provided for rotation in unison about an axis, having axial and radial attachment of the units relative to each other. The attaching involves first engagement members (28,29) engageable with each other and provi... | 11/09/2004 |
| 6732612 | Blade exchanging device and blade exchanging method therefor With a blade exchanging device, a cylindrical body is engaged with a nut that is fastened to a spindle, and at the same time the nut is held by fitting nails of a chuck member with grooves that are formed on the nut. Next, a torque wrench is inserted through the cyl... | 05/11/2004 |
| 6622602 | Device for slicing loaves and other bakery products A device (1) is provided for slicing loaves and similar bakery products. The device includes a stationary frame (2) including a support (4, 5) for supporting the loaves or bakery products. A blade carrier (10) holds a plurality of thin elongate cutting bl... | 09/23/2003 |
| 6595096 | Blade and motor carrier with height/angle adjustment mechanism A machine tool has a work table which defines a working surface and has a cutting tool which is attached to and movable with respect to the work table. The position of the cutting tool with respect to the working surface is controlled by a mechanism which... | 07/22/2003 |
| 6591725 | Circular sawing machine A circular saw and in particular a circular saw bench, including a supporting surface for a workpiece and a saw blade which is able to project from a groove in the supporting surface. The saw blade is pivoted to both sides at a longitudinal edge of this g... | 07/15/2003 |
| 6474208 | Cutting device with detachable cutter head for cutting sheet material length-wise The device for cutting sheet material length-wise includes a knife holder assembly which can be linked to a cutter bar. The knife holder assembly has a support body and a cutter head which carried a circular cutting knife and which can be adjusted vertica... | 11/05/2002 |
| 6463838 | Bank cutter positioning device A bank cutter positioning device installed in a cutter seat at a side having a dovetail groove comprises a locking block, an elastic element, a roller and a handle. The locking block having an end pivotally installed above the dovetail groove. The elastic... | 10/15/2002 |
| 6460443 | Device for cutting sheet materials A sheet material cutting device includes a base having two brackets, two arms pivotally secured to the brackets, a track secured between the arms and rotated in concert with the arms relative to the brackets, a seat slidably engaged on the track and movab... | 10/08/2002 |
| 6453786 | Blade and motor carrier with height/angle adjustment mechanism A machine tool has a work table which defines a working surface and has a cutting tool which is attached to and movable with respect to the work table. The position of the cutting tool with respect to the working surface is controlled by a mechanism which... | 09/24/2002 |
| 6327950 | Longitudinal cutting machine having blade holders that are individually removable from the traverse A longitudinal cutting machine having a plurality of blade holders disposed on at least one traverse that extends over the length of the longitudinal cutting machine is provided. So that the blade holders can each be removed independently of one another f... | 12/11/2001 |
| 6325127 | Ultrasonic sewing machine and bonding wheel assembly An ultrasonic seam welding apparatus for seam welding at least two sheetlike work pieces piled one above the other by imparting ultrasonic osculation is expressed through the ultrasonic binding and cutting quill assembly. The ultrasound seaming and cuttin... | 12/04/2001 |
| 6253652 | Slitter blade locking device In a web slitter of the type used for cutting continuous webs of material, such as paper, a top slitter assembly features a hub cylinder attached to its frame. The hub cylinder supports a freely rotating hub to which the top blade of the web slitter is mo... | 07/03/2001 |
| 6244149 | Blade and motor carrier with height/angle adjustment mechanism A machine tool has a work table which defines a working surface and has a cutting tool which is attached to and movable with respect to the work table. The cutting tool extends through a removable throat plate. An integral arbor wrench is provided which i... | 06/12/2001 |
| 6227092 | Quick disconnect for a motor driven slitting knife A motor driven slitting knife assembly is provided with a quick disconnect arrangement for permitting rapid replacement of a slitting knife. The motor is provided with a rotatable hub having a radially extending flange. A slitting knife is mounted on one ... | 05/08/2001 |
| 6138546 | Hand-operated cutter for a sheet-like workpiece and a method of cutting A hand operated cutting apparatus and method of cutting mat board, glass, and other related sheet-like framing material. The apparatus has a cutting head assembly which includes a plurality of interchangeable and adjustable blade holding units. Each blade... | 10/31/2000 |
| 6109157 | Arbor locking mechanism An arbor lock mechanism for use with an arbor of a table saw. The mechanism includes a bearing plate connected to the frame of the table saw and through which the arbor rotates. The mechanism also includes an arbor lock plate connected to the bearing plat... | 08/29/2000 |
| 6012365 | Reduced maintenance cutting machine An apparatus for cutting, including an anvil cylinder which may have a plurality of cut rubbers strips affixed around the anvil cylinder and a cut cylinder which is mounted for rotation about an eccentric axis. Two knife boxes may be mounted on the cut cy... | 01/11/2000 |
| 6010441 | Device for handling and storing of cutters and spacers for a slitter which slits coils of material such as steel, aluminum or plastics A device to assemble cutter assemblies of cutters and spacers for a slitter for slitting coils of steel, aluminum, plastic or other material. The storage region of cutters and spacers uses the head room above the floor-area and is served by a robot that i... | 01/04/2000 |
| 5970836 | Machine for punching a printed circuit plate The invention relates to a machine for punching a printed circuit plate. The machine comprises a plurality of punch blocks that are movable relative to the structure. Each block comprises a frame that is movable relative to the structure, displacement mea... | 10/26/1999 |
| 5937723 | Mechanism for cutting a sheet A mechanism for cutting a sheet of paper includes a rotary blade and a counter blade. The periphery of the counter blade is substantially flush with a paper-setting surface on one side of a stand portion of a cutter frame. The axis of the counter blade is... | 08/17/1999 |
| 5924347 | Splitting apparatus for splitting coils of metal such as steel and aluminum and coils of other materials into strips The invention relates to a cutter assembly for slitting of coils of relatively large width into one coil of desired width or into several coils. The material for slitting is preferably metal, for example steel or aluminum, but coils of other material can ... | 07/20/1999 |
| 5875698 | Blade and motor carrier with height/angle adjustment mechanism A cutting machine has a work table which defines a working surface and has a cutting tool which is attached to and movable with respect to the work table. The position of the cutting tool with respect to the working surface is controlled by a mechanism wh... | 03/02/1999 |
| 5823085 | Miter saw A miter saw includes a miter saw for placing a work thereon, a miter saw unit having a saw blade mounted thereon, and a support mechanism for supporting the miter saw unit for rightward and leftward pivotal movement relative to the base. The support mecha... | 10/20/1998 |
| 5735782 | Robot installation An installation in a slitter mill for mounting a tool set (5), composed of annular tool parts (3), on a set-up device (1) provided with bars (2). The tool parts (3) are stored in a plurality of magazines (4) in a tool storage. A gantry robot (9) is adapte... | 04/07/1998 |
| 5644940 | Portable sheet metal work-roll apparatus A portable slitter for selectively roll slitting rib forming or perforating sheet metal workpieces and having a beam-type frame, a pair of spaced thin walled and light weight rotary torque tube roll shafts mounted in the frame and supporting the work roll... | 07/08/1997 |
| 5596918 | Sports card slitting device and method A slitting assembly for producing a plurality of "interrupted cut" slits in a large sheet of sport card photos includes a horizontal support track carrying a plurality of individual upper slitting assemblies each including a freely rotatable upper hub, an... | 01/28/1997 |