Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7171139 | Sleeve on a drum and changing said sleeve In replacing a sleeve on a printing machine drum, the diameter of the drum is reduced by moving the drum parts toward one another to facilitate removing the sleeve, and/or mounting another sleeve onto the drum, and increasing the drum diameter by moving the drum par... | 01/30/2007 |
| 7128290 | Spool having a dual purpose cam A spool suitable for winding material thereon includes an axially extending body having a proximal end and a distal end joined by an outer surface. A cam is rotatably mounted adjacent to the body for rotatable movement between a closed position and an open position.... | 10/31/2006 |
| 7077356 | Core chuck A core chuck includes “lock and key” or “key and keyhole” interfaces between the central cam and the mounting plate and the central cam and the end cap. The central cam includes central region having a multi-faceted camming surface adapted to expand and retr... | 07/18/2006 |
| 7077184 | System, apparatus, and method for dispensing strips of tape The invention provides a tape dispenser system, apparatus, and method for dispensing strips of tape used for masking or tacking. The tape dispenser includes a frame, attachment/securement means, a quick release locking expandable tape hub expansion member mechanism ... | 07/18/2006 |
| 7044418 | Strip winding and unwinding device with automatic centering The invention concerns a device for winding/unwinding metal strips, in particular for steel bands, comprising a mandrel (4) mounted mobile in rotation in a bearing (4a), and serves to provide means for pivoting, seizing, centering and suppoting ... | 05/16/2006 |
| 6533205 | Fiber optic cable winding tool A fiber optic cable winding tool having concentric upper and lower disk-shaped bases that are rotatable relative to each other. Four quarter-circle spools are slidably mounted on the upper base, and are radially adjustable towards and from the central axi... | 03/18/2003 |
| 6367733 | Core chuck A core chuck has a generally spool-shaped mandrel with an outer surface configured to define three longitudinally extending lobes. A set of three or more arcuate friction plates surround the lobular outer surface of the mandrel and are movably held in pla... | 04/09/2002 |
| 6021972 | Sheet material winding core A winding core member of a winding core is divided along an axial direction into a first main body, a second main body and a third main body. Projections which are formed at the respective main bodies can fit into cam grooves of cams provided in the windi... | 02/08/2000 |
| 5758841 | Spindle capable of being inserted into the core of a roll of material in strip form and machine for winding and/or unwinding comprising such spindles The present invention relates to a spindle capable of being inserted into a core (1) on which a material in strip form, in particular paper, is wound into a roll. This spindle comprises a shaft (8) connected to a braking device (7), a tubular jaw holder (... | 06/02/1998 |
| 5490640 | Torque-actuated expansible shaft assembly for roll core An expansible shaft assembly has core-engagement shoes pivotally mounted to a shaft for pivoting outwardly into tight engagement with the interior of a roll core automatically in response to the application of torque to the shaft. The core-engagement shoe... | 02/13/1996 |
| 5094346 | Reusable container for tape pancakes A container for pancakes of recording tape has an L-shaped base, mandrels extending horizontally from the base on which pancakes are placed, and a cover which encloses the pancakes. The circumference of each mandrel is expandable to secure the pancakes in... | 03/10/1992 |
| 4991785 | Reel clamping device A reel clamping device which is capable of positioning a reel rapidly and precisely. The reel clamping device is composed of a cylindrical shell having a plurality of through slots extended parallelly with the axis thereof; a screw bolt rotatably disposed... | 02/12/1991 |
| 4964586 | Releasable holding device for cores A device for releasably holding a core or the like relative to a drive shaft passing therethrough includes at least two clamping elements located within the core. Guide pieces are fixed to a ring disc which surrounds a ring connected to the drive shaft. T... | 10/23/1990 |
| 4848692 | Apparatus for fitting rotary A device for fixing a roller to a rotary shaft, particularly useful with supply and take-up rollers in a laminator device for printed circuit boards, in which only a single tightening operation is required to fix the roller to the shaft. A support member ... | 07/18/1989 |
| 4593864 | Differential mandrel for sheet-slitting machine recoiler When strips are cut from a coil of sheet material, they may differ in length because of differences in thickness across the sheet. These differences in length are accommodated by the slit strips being wound by separate rotational forces. Recoiler mandrels... | 06/10/1986 |
| 4522352 | Drive and mounting for coaxial tape reels Coaxially disposed tape reels are driven independently of each other by motors located inside coaxial hubs on which the reels are held. The mechanisms for loading and unloading the reels include arc-segment-shaped levers pivoted at one end on rings and ac... | 06/11/1985 |
| 4334652 | Expandible devices for internally gripping cores or the like An expandible device for internally gripping a core carrying a web of material has jaw segments forming an outer cylinder surrounding a body member which may be solid or hollow. Balls are arranged in recesses around the exterior of the body member and the... | 06/15/1982 |
| 4333616 | Collapsible core plate construction Recoiler mechanism including a core plate having a main body and complementary peripheral portions integral with the body and forming with the body, a surface about which material may be coiled, the portions terminating in adjacent free ends, and provisio... | 06/08/1982 |
| 4239066 | Yarn feeder A weft yarn feeder for use in a shuttleless loom has a spool and a spindle extending rotatably through the shaft of the spool and supporting a pair of drive gears. A plurality of yarn rods jointly defining a generally cylindrical configuration around whic... | 12/16/1980 |
| 4160530 | Core chuck A core chuck is disclosed which employs a set of expandable jaw sections. The jaw sections are expandable by operation of an adjusting pinion to which the jaw sections are connected by means of a keyway element. The chuck may be attached to a shaft or bea... | 07/10/1979 |
| 4015086 | Hinged welding machine A traveling carriage is adapted to support and guide a welding head, a propelling apparatus, a wire feed mechanism and a reel for winding a continuous length of welding wire thereon. The welding unit is adapted to travel about an upstanding circumferentia... | 03/29/1977 |
| 3993317 | Core chuck A core chuck comprising radially movable exterior jaw members, means operative in response to a relative rotation between the jaw members and those means to apply a radially outward force to the jaw members, and biasing means for urging the jaw members to... | 11/23/1976 |
| 3973742 | Self-centering coil holder Self-centering holder for hollow textile coils of varied lengths and diameters includes at least two rod-shaped substantially parallel-extending centering and clamping members, and means includes support and adjusting members for the centering and clampin... | 08/10/1976 |
