...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 |
| 7350313 | Device for cutting and marking a metal cable Device for cutting and marking a metal cable (16), comprising means (12, 18) for cutting the cable (16) and marking means (20) for marking the cable (16) with a mark at a predetermined distance (d) from the cutting plane (C), cutti... | 04/01/2008 |
| 7322111 | Brush cutting device A lever actuated cutting tool that allows ground level cutting of shrubs and small trees from a standing position. The design of the cutting tool takes advantage of the principles of leverage and resistive force, and also incorporates a pendulum swing, to provide a ... | 01/29/2008 |
| 7284330 | Cutting device for workpieces such as rods, bolts and the like, especially for threaded rods A cutting device for rod-shaped workpieces has two actuating levers each in the form of a two-arm pivot lever. The two-arm pivot levers each have a first arm as an actuator and a second arm having a shearing edge. The actuators move the shearing edges relative to on... | 10/23/2007 |
| 7152515 | Wire cutter for artificial flower stems Cutter suitable for artificial flower stems. Typically, plastic coated wire stems are cut with hand cutters to various lengths in preparing artificial floral arrangements. The invention requires far less physical effort by the operator than is required when using co... | 12/26/2006 |
| 7059021 | Lopper shear with an improved structure A lopper shear pull-rope grip includes a closed end provided with a bulge. The through hole of the bulge is connected to the hollow notch of the grip, where a rope can penetrate the through hole. And, a slanting board extends downwards from the through hole. The sla... | 06/13/2006 |
| 7051627 | Folding multipurpose tool including blade lock release mechanism A folding multipurpose tool incorporating a latch release mechanism including a lever, a cam, and a rocker-shaped grip body to easily effect release of a catch for holding knife or screwdriver blades extended. spring and cams are arranged to hold a pair of handles e... | 05/30/2006 |
| 6842983 | Locating structure of expandable oval handles of garden shears A pair of gardening shears includes two expandable handles, each handle being formed of an oval outer tube, an oval inner tube, and a grip rotatably fastened to the lower end of the outer tube. The inner tube is slidably fitted at the lower end into the upper end of... | 01/18/2005 |
| 6526857 | Surface mounted ergonomic cutter A manually operated modified bolt cutter is placed in a fixture supporting a bolt cutter in a reversed operating position allowing the operator to cut small dimension materials using a one hand or arm pushing motion instead of the two hand or arm compress... | 03/04/2003 |
| 6112414 | Rechargeable hair clipper assembly A hand-held beauty appliance assembly comprising a hand-held beauty appliance and a battery charger. The hand-held beauty appliance includes an appliance housing portion including a rechargeable battery socket having therein a keyway groove, a frame fixed... | 09/05/2000 |
| 5787590 | Extension and support for electric clippers An open top shoe having a slotted end cap, an opened end, a bottom wall and opposing side walls contoured to removably support a commercially available industrial electric foliage clipper, is integrally supported to an elongated pole that may be telescopi... | 08/04/1998 |
| 5778539 | Device for hand tools attached to a pole The invention relates to a pull grip which can be attached to any place on a pull rope in order to operate the cutting tools via the pull rope in a convenient position which is ergonometrically favorable. The pull grip is in this connection guided by a pa... | 07/14/1998 |
| 5743018 | Pruning shear device A pruning shear device includes a hook formed on the upper portion of a handle for engaging with a tree limb. A bar has one end pivotally coupled to the handle and bar an oblong bole. A cutter blade is pivotally coupled to the handle and has a free end sl... | 04/28/1998 |
| 5315762 | Grass trimming shears A grass shearing tool has an elongate extension arm connected to a base which in turn supports a grass shearing mechanism. A first lever is pivotally mounted on the base and connected to an upper pivotal blade of a shearing mechanism. A remote actuating l... | 05/31/1994 |
| 5168629 | Scissor assembly The present invention is a scissor assembly adapted to be in an open or closed position and to be manipulated by a user to cut a selected material. The scissors assembly includes a first scissors member and a second scissors member pivotally connect and b... | 12/08/1992 |
| 5070576 | Hedge trimmer extension handle apparatus A hedge trimmer extension handle for use with hand held hedge trimmers provides extended reach for the operator when used in connection with the hedge trimmer. The extension handle device is adapted for use with Black & Decker electric hedge trimmers and ... | 12/10/1991 |
| 4984368 | Life cut An emergency scissors for cutting through a jammed seat belt of a motor vehicle is provided in which the blades are blunt tipped to avoid injury to the eyes. The emergency scissors can be carried in a storage sheath that is attached to a dashboard of the ... | 01/15/1991 |
| 4970790 | Bas-relief carving plate assembly A tool holder for facilitating the carving of carpet fibers for producing a decorative, sculpted surface includes a rigid, polygonal-shaped base plate having a central opening formed therein through which the cutting head of a carpet carver may pass. The ... | 11/20/1990 |
| 4776096 | Scissors means particularly for cutting blind's slats The present disclosure is related to a scissors means which is particularly adopted to cut Venetian blind slats into standard sizes, and is characterized by its readiness and precision of operation.... | 10/11/1988 |
| 4747213 | Tool support A tool support inclues clamping members for holding the handle of a conventional tool and leg members for urging the clamping members together to secure the tool handle between the clamping members and for supporting the tool at the desired height. In one... | 05/31/1988 |
| 4733470 | Mounting apparatus Mounting apparatus 10 for use with commercial electric hedge trimming apparatus 12 comprises a hand-held support frame 14 to support the hedge trimmer at one end 18. The hedge trimmer is angularly adjustable in direction A about an axis 19 to vary the ang... | 03/29/1988 |
| 4707921 | Extension handle for a handheld electrically powered tool An extension handle facilitating use of a handheld electrically driven grass shear from an upright standing position that removably attaches to the hand grippable portion of the grass shear by depending pairs of opposed, resilient, inwardly biased clamps.... | 11/24/1987 |
| 4649646 | Cutting mechanism for pole pruners An improved cutting mechanism for a pole pruner; the cutting mechanism includes a head mounted on the upper end of an elongate vertical pole. The head has an upwardly, radially forwardly and downwardly turned, recurvant, work-engaging hook defining a down... | 03/17/1987 |
| 4619168 | Cutting mechanism A cutting mechanism adapted for paper can be formed from sheet metal and cooperate with an anvil having a straight edge wherein the blade has the cutting surface which tapers toward the opposite edge of the blade and the metal is bent from the plane of th... | 10/28/1986 |
| 4531291 | Animal grooming clipper The clipper is driven by a flexible shaft from a stationary motor supported by a stand clamped to an edge of a grooming table. Because the motor is not incorporated in the clipper casing as characterizes prior art clippers, the casing is lighter, operates... | 07/30/1985 |
| 4361959 | Brush cutter A brush cutter including a first normally horizontal blade having a transverse slot, support structure including an elongated handle generally orthogonal to the blade to enable positioning of the slot about the base of a stalk to be cut, a second blade gu... | 12/07/1982 |
| 4249308 | Bolt cutter A bolt cutter wherein there are removably replaceable cutter blades supported in cutting relation by pivotally connected jaws and wherein the jaws are structured to transmit the force couple for cutting to the blades at opposite ends and at opposite sides... | 02/10/1981 |
| 4247984 | Knife and chopper board combination A knife and chopper board combination is provided in which the knife is pivotally coupled to the board at its forward end to permit it to be turned about a vertical axis to various angular positions with respect to the top of the board and then turned abo... | 02/03/1981 |
| 4188721 | Attachment for a back hoe A back hoe attachment for cutting and moving cables or the like pivotally positions a cutting blade and hook on the end of a back hoe boom for actuation by a piston and cylinder of the back hoe. A fixed blade is secured to the boom forming a shear point b... | 02/19/1980 |
| 4152831 | Tool holder A tool holder for a scissor-like tool whose blades are biased to an open position by means of a spring has a portion co-acting with the blades or handles which are forced against that portion to secure the tool in the holder.... | 05/08/1979 |
| 4058894 | Lever-operated shears The shears comprises a frame, a first jaw integral with the frame, a second jaw pivotable relative to the first jaw, a lever for operating the shears, a first pivot pin pivotally connecting the lever to the frame, a first structure, a second pivot pin piv... | 11/22/1977 |
| 4054991 | Adjustable hair-clipping devices An adjustable hair clipping device comprising a base and a support member to which is affixed a cutting member such as a pair of ordinary scissors. The support member includes means for positioning the scissors a predetermined distance from the base.... | 10/25/1977 |