...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7731070 | Method and device for applying a pressure roller to a goods guiding roller A method and an apparatus are for applying a rotationally driven pressure roller (4) onto a rotationally driven goods guiding roller (3) in stretching equipment for thermoplastic films. The pressure roller (4) is advanced in the direction of the... | 06/08/2010 |
| 7390989 | Wire feeder A drive roll adapted and configured to feed weld wire includes first and second opposing sides and an outer body surface. The outer body surface includes a base body surface, and at least one elevated wire interface extending outwardly from and along at least a majo... | 06/24/2008 |
| 7383973 | Drive rollers for wire feeding mechanism A wire feeding mechanism for advancing a continuous length of wire along a pathway includes a housing having two roller supports each rotatable about a corresponding axis transverse to a wire pathway. The roller supports are on opposite sides of the pathway and are ... | 06/10/2008 |
| 7234369 | Continuously adjustable self-lubricating mill roll drive Described is an adjustable roll drive including a fixed drive cylinder having a fixed drive gear, a fixed intermediate gear rotated by the fixed drive gear, a movable intermediate gear rotated by the fixed intermediate gear, and a movable driven cylinder having a mo... | 06/26/2007 |
| 7220197 | Tracked drive device The tracked drive device particularly protected by its frame or hood as well as by protective plates, so as to prevent any accidental insertion of a finger or any other part of the human body between the track elements. The arrangement makes access to the track, for... | 05/22/2007 |
| 7134458 | Method of producing reinforcing fiber woven fabric and production device therefor and reinforcing fiber woven fabric A method of producing a reinforcing fiber woven fabric, for producing on a weaving machine a reinforcing fiber woven fabric from wefts of reinforcing fiber yarns and warps of reinforcing fiber yarns, the method comprising providing, on a weft supply passage for supp... | 11/14/2006 |
| 7124815 | Tubing injector for variable diameter tubing A tubing injector apparatus for use with variable diameter tubing. The apparatus comprises a pair of carriages which may be moved transversely and pivotally with respect to one another by actuating hydraulic actuator cylinders. A hydraulic control system uses relief... | 10/24/2006 |
| 7026574 | Wire gripper for a drive unit of a wire feeder A gripping device for a set of pinch rollers used in a wire feeder that supplies a welding operation with a consumable welding wire. The welding wire passes between the pinch rollers whereby the pinch rollers engage the wire with a gripping force and incrementally r... | 04/11/2006 |
| 7000816 | Loading system for elongated strand of food product A loading system is provided for loading an elongated strand of food product of given diameter on a moving transport conveyor. First and second loading conveyors are separated by a gap of dimension less than or equal to the diameter of the food product strand and co... | 02/21/2006 |
| 6991145 | Synchronous fine tunable material feeding mechanism A synchronous fine tunable material feeding mechanism includes a platform, a control member and a link device. A side panel is installed separately on both sides of the platform, and a top panel is installed on the side panels. A fixed roller and a movable roller ar... | 01/31/2006 |
| 6920772 | Pinch roll unit A pinch roll unit for either propelling or retarding a product moving along the pass line of a rolling mill comprises a pair of levers mounted for rotation about parallel first axes. Roll shafts are carried by the levers with each roll shaft being journalled for rot... | 07/26/2005 |
| 6796522 | Reel-less line retriever A reel-less line retriever suitable for rescue work provides open housing and guides such as may receive a flexible line along its length without threading through the guides and housing to be positioned between a pair of engaging wheels. The wheels are compressed a... | 09/28/2004 |
| 6604663 | Control method of hydraulic pinch roll and control unit thereof A control unit of hydraulic pinch rolls 1 comprises: position detectors 10c, 10d that detect position of right and left cylinder pistons 6c; an arithmetical unit 13 that calculates a difference of output 16c, 16d from the position detectors; a controller ... | 08/12/2003 |
| 6557742 | Drive roller for wire feeding mechanism A wire feeding mechanism suitable for advancing ferrous and nonferrous wire along a pathway without causing damage to the wire, including a plurality of drive rollers stationed in opposing pairs along the pathway, each comprising a cylindrical hub and a f... | 05/06/2003 |
| 6533154 | Nipping roller gap adjusting device The gap adjusting device for nipping rollers is provided with one roller rotatably provided at a prescribed position and the other movable roller. The nipping rollers are adapted so that the other roller is capable of forcing a paper web passing between t... | 03/18/2003 |
| 6427894 | Electrode wire feeder for an arc welding system An electrode wire feeder, including a housing defining a sealed compartment for containing a suitable lubricant, respective pairs of feed rolls rotatably mounted exteriorly of said housing, on rotatable shafts, one of the shafts of each pair of feed rolls... | 08/06/2002 |
| 6378749 | Bearing unit for material-web nip pulleys A bearing unit for throwing a movable nip pulley on and off a stationary mounted nip pulley has an actuating device for throwing the movable nip pulley laterally onto a material web, and adjustable stops for adjusting an actuating travel of the movable ni... | 04/30/2002 |
| 6286741 | Method of feeding a photosensitive material in a photosensitive material processing device A method of feeding a photosensitive material processing device, includes providing a pair of feed rollers, each in a form of a coaxially-shaped two-layer structure formed by two-layers extrusion molding using thermoplastic resin, wherein the two-layer st... | 09/11/2001 |
| 6189758 | Driving device using a flexible element to adjust the nip gap A driving device for an elongated element such as a cable includes a device for simultaneously and symmetrically moving two driving track belts apart or closer together in relation to the elongated element. With this driving device, the two track belts ca... | 02/20/2001 |
| 6138886 | Device in a wire rolling mill A device in a wire rolling mill includes a pair of grooved rolls. Each grooved roll is fixedly attached to the free end of a rotatably supported spindle. Each grooved roll is positionable relative to the other so that they between themselves define a roll... | 10/31/2000 |
| 6119910 | Pump puller A well pump puller having a well casing collar including a coupling adapted to be tightly secured to a well casing and a frame support of legs upstanding from the coupling. A frame which is removably mounted on the support includes first and second u-shap... | 09/19/2000 |
| 6041991 | Cable conveying unit This cable conveying unit serves for the precise feeding of a given length of a cable into a cable processing station between at least two conveying rollers or bands driven in counterrotation and capable of being placed against the outside of such a cable... | 03/28/2000 |
| 5967512 | Assembly for adjusting nip roll spacing A nip roller assembly for adjusting the vertical movement of a top nip roller with respect to a bottom nip roller mounted on a machine base, the assembly including a frame attached to the base, the frame including opposing upwardly extending guide legs an... | 10/19/1999 |
| 5937689 | Triple roller entry guide An entry guide device comprising a funnel shaped inlet member in close proximity to three adjustable rollers mounted at 120° around the axis of work moving through the entry guide device. The adjustable rollers are actuated to move in concert so as to be... | 08/17/1999 |
| 5934536 | Adjustable turndown apparatus A turndown apparatus has first and second guide rollers arranged respectively along the inside and outside of a curved path along which bendable products such as bars, rods and the like move at high speeds. The guide rollers coact in pairs to define gaps ... | 08/10/1999 |
| 5918787 | Apparatus for feeding a web of material Apparatus for feeding a web of material, in particular a web of cardboard, having at least one driven element which engages one surface of the web of material to be fed, and which cooperates with at least one bearing element acting upon the other surface ... | 07/06/1999 |
| 5915644 | Retrofittable operating module for web processing machines and the like A module for a web-processing machine includes a sub-frame to which are mounted an operating roll (such as a die roll), and means urging the operating roll in one direction. The sub-frame can assume a position in which the operating roll is juxtaposed aga... | 06/29/1999 |
| 5833108 | Paper delivery device A paper delivery device in which paper is delivered, being put between pinch rollers and a delivery roller. Such paper delivery device is comprised of a lever that is operated to pivot to at least a first position, a second position and a third position; ... | 11/10/1998 |
| 5772095 | Roll type stock feed apparatus A roll type stock feed apparatus having a lower feed roll rotatably supported on a frame and cross-shaft rotatably mounted on the frame parallel to the lower feed roll, and a motor for driving the lower feed roll and the cross-shaft in timed relation. Fir... | 06/30/1998 |
| 5738264 | Automated folder nipping roller adjustment Web feed apparatus, for example in web printing and folding apparatus, has a pair of opposing rollers, one (28) on a fixed axis and one (22) laterally movable to define an adjustable nip gap between their peripheries. The gap is automatically set and adju... | 04/14/1998 |
| 5692662 | Device for inserting and drawing a leader spring in conduits for electrical wiring systems A device for inserting or threading and drawing a leader spring in conduits for electric wiring systems includes a housing closable by a lid and accommodating at least one driven roller for cooperation with a counterpressure roller accommodated in the lid... | 12/02/1997 |
| 5669540 | Mechanism for drawing superimposed webs for rotary press A mechanism for drawing superimposed webs in a rotary press comprises: a drag roller provided between a printing press and a folding machine so as to be rotated and driven at a peripheral velocity suitably higher than that of a plate cylinder; a plurality... | 09/23/1997 |
| 5601223 | Cable transporting and turning device At least two transporting and take-off rollers (2, 2') interact for the gripping of a cable (1) to be transported. The axes of rotation (3, 3') of the transporting and take-off rollers are each rotatably arranged on a cantilever arm (7, 7') capable of swi... | 02/11/1997 |
| 5586709 | Device to compensate the elongation of at least two wire rods or round bars, which is associated with a drawing assembly Device to compensate the elongation of two or more wire rods or round bars on machines fed with two metallic wire rods or round bars of iron or alloys thereof of a type for building work, the machines being, for instance, bending/shaping machines, the dev... | 12/24/1996 |
| 5370290 | Wire feeder allowing for wire slippage without damaging wire A pusher system (12) extracts a wire (11) from a reservoir (10) and feeds the wire through a wire guide (13) to a puller system (14). The puller system then feeds the wire (11) through a tip (15) to the welding operation represented by an arc (16) and a w... | 12/06/1994 |
| 5343934 | Multiple pinch roll apparatus and method for advancing a continuous rod Multiple pairs of pinch rolls are used to advance a rod product along a pathway following a continuously casting and rolling system. Each pinch roll pair exerts a force normal to the rod of less than the amount necessary to substantially degrade the yield... | 09/06/1994 |
| 5071504 | Double sided laminating machine A laminating system includes a pair of heated laminating rollers (14) for drawing laminating film (12) from supply rolls and preheat members (30) between the supply rolls and the laminating rollers. The preheat rollers are heated internally by a bonded el... | 12/10/1991 |
| 5061337 | Pressure roller assembly Pressure rollers are carried on respective shafts which are slidable in slotted plates towards and away from a machine centreline to define a gap. Measuring means are provided for determining the position of each roller, in the form of a contact probe mou... | 10/29/1991 |
| 5019203 | Double sided laminating machine A laminating system includes a pair of heated laminating rollers (14, 110) for drawing laminating film (12, 114) from supply rolls and preheat members (30, 118) between the supply rolls and the laminating rollers. The preheat rollers are heated internally... | 05/28/1991 |
| 5007291 | Ultrasonic inspection apparatus with centering means for tubular members Pipe inspection apparatus comprising transducers for transmitting pulsed beams of ultrasonic energy longitudinally, transversely and obliquely into the wall of the pipe for detection of flaws. The apparatus includes a motor driven chuck 18 for rotating th... | 04/16/1991 |