Celebrity Inventors
Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 7396195 | Safety protective device for working machine A working machine includes a blade seat movable relative to a sheet plate, and a safety protective device mounted on the blade seat to cover the blades of the blade seat and including at least one swing member pivotally mounted on the blade seat, and a protective bo... | 07/08/2008 |
| 7326008 | Servo tapping unit with built in shock protection A servo motor in die tapping unit provides built in shock protection for the motor by fixing a shock plate to the servo motor and floatingly mounting the shock plate to a base structure attachable to a stripper plate in a press. Sets of opposing springs allow moveme... | 02/05/2008 |
| 7056072 | Method and apparatus for controlling movement of cutting blade and workpiece A method of controlling a relative movement of a cutting blade and a workpiece which are moved relative to each other by a movement device in an operation with a machine tool. The method includes a step of bringing the cutting blade and an object into contact with e... | 06/06/2006 |
| 7013776 | Device for cutting optical fiber and a method for cutting optical fiber An optical fiber cutting device provided with a speed reducing part which transmits drive force by reducing the drive speed of the external drive force, a drive force transmission part which transmits the drive force from the speed reduction part to the cutting blad... | 03/21/2006 |
| 6920814 | Cutting tool safety system A woodworking machine is disclosed. The machine includes a cutting tool and a motor adapted to drive the cutting tool. The machine further includes a detection system to detect a dangerous condition between the cutting tool and a person, such as a person coming into... | 07/26/2005 |
| 6758640 | Method and apparatus for controlling movement of cutting blade and workpiece A method of controlling a relative movement of a cutting blade and a workpiece which are moved relative to each other by a movement device in an operation with a machine tool. The method includes a step of bringing the cutting blade and an object into contact with e... | 07/06/2004 |
| 6517295 | Power drill housing and chuck rotation A power drill housing and chuck rotation indicator arrangement in which the power drill housing is formed of two symmetrical shells abutted against each other, the shells each having a front end terminating in a chuck guard defining a respective semi-circ... | 02/11/2003 |
| 6488451 | Drive shaft lock A drive shaft locking mechanism including a locking structure in the form of a gear which is secured to an input shaft of a rotary tool, a retractable interlocking mechanism which selectively couples to the locking structure, and a directional control mec... | 12/03/2002 |
| 6328505 | Drill guiding device A device for aligning a hand-held electric drill to a vertical position with respect to a flat workpiece includes a disc-shaped circular housing having a centered axis, upper and lower faces, and a channel centered on the axis in communication with both f... | 12/11/2001 |
| 6247880 | Milling machine chip deflector An apparatus for guarding an operator from hazards produced at the point of operation of a machine tool. The apparatus comprises a mounting bracket for attaching the fixture to the dovetail of the ram of a milling machine (e.g., a Bridgeport vertical mill... | 06/19/2001 |
| 6176656 | Machine tool with a splash guard arrangement A machine tool comprises a spindle stock and a worktable provided in front of the spindle stock to support workpieces thereon and capable of up-down movement and swivelling movement about a vertically extending center axis. Also employed in the machine to... | 01/23/2001 |
| 6139228 | Keyless chuck assembly for a rotary driven tool A chuck assembly (22) for releasably attaching a cutting accessory (23) to a rotary driven tool such as a surgical drill (20). The chuck assembly includes a chuck head (30) from which a drive spindle (36) extends rearwardly. Clamping jaws (34) extend from... | 10/31/2000 |
| 6065912 | Router switching system Improvements made to a router include a switching system which is part of a router handle and which operates the router motor by connecting it to an external electrical power source. In a preferred embodiment, the present switching system comprises the us... | 05/23/2000 |
| 6012878 | Pressure balanced subsea tapping machine A machine for use underwater and therefor subject to ambient hydrostatic pressure for tapping a pressurized pipeline has an elongated tubular tapping machine body with a boring bar therein that receives a cutter at its lower end. A passageway in a lower e... | 01/11/2000 |
| 5961257 | Drill for drilling crossties, particularly for use in the railroad sector A drill for drilling crossties, particularly for use in the railroad sector, comprising a protective enclosure which is formed by a movable portion and by a fixed portion and is suitable to completely cover a chuck of the drill and a drilling bit coupled ... | 10/05/1999 |
| 5908272 | Rotational cutting tool guard apparatus A guard apparatus for a rotational tool prevents direct contact of the cutting regions by an operator of the tool. The rotational cutting tool to which this invention is particularly applicable is the type having at least a shank portion and a toothed reg... | 06/01/1999 |
| 5846036 | Protective cover A protective cover comprising a tool covering portion and a pressure contact tube portion. The pressure contact tube portion is formed on its periphery with a multiplicity of resilient pieces. When the pressure contact tube portion is fitted over a front ... | 12/08/1998 |
| 5816585 | Chuck element for machine tools with rotating jaw chuck A chuck system for machine tools with a rotating jaw chuck has clamping jaws of the jaw chuck which can be radially adjusted relative to an axis of rotation. The clamping jaws are displaceably mounted in a bearer connected with a drive shaft, and in which... | 10/06/1998 |
| 5782591 | Universal tool holding device for use with a power-driven, rotatable spindle machine An apparatus and method for securely, mechanically retaining an elongated tool holding arbor in the tapered bore formed in the spindle of a conventional, rotatable, power driven spindle machine. The arbor is mechanically secured to the spindle by bridging... | 07/21/1998 |
| 5704884 | Machine tool with slide cover apparatus In a machine tool of the present invention, a spindle head rotatably supports a vertical tool spindle. On the spindle head base, a guide mechanism is provided so as to guide the spindle head in mutually orthogonal first and second horizontal directions an... | 01/06/1998 |
| 5581165 | Device for controlling rotational direction of a direct current motor and applying brake thereto This invention relates to a mechanism for controlling rotational direction of a direct current motor and a applying brake thereto and in particular to one including a cathode connected to a negative pole of a battery, an anode connected to a positive pole... | 12/03/1996 |
| 5551813 | Machining centre and router guard A processing machine comprises at least three powered guides (13,15,27) for movement along Cartesian axes for a support (12) to hold a tool (21) on a horizontal table (11). Motors (14,16,19) for movement along the three guides are connected to an integrat... | 09/03/1996 |
| 5501555 | Blocking device for tool holder of hand power tool and hand power tool provided therewith A hand power tool has a tool holder, and a blocking device for the tool holder, the blocking device being connectable with the tool holder and provided with a key unlockable blocking body which secured the blocking device from undesired withdrawal. When t... | 03/26/1996 |
| 5496139 | Collet lock arrangement for power tool An improved collet lock arrangement for a hand-held power tool having a housing is provided. The collet lock arrangement includes a powered rotatable shaft including a base portion and distal end portion defining a collet for adaptably connecting a driver... | 03/05/1996 |
| 5470181 | Safety device for machine tools The present invention relates to a safety tool having particular, although not exclusive, use in conjunction with machine tools in which a locking device is employed to lock and unlock a movable machine element and wherein a counterweight is employed in c... | 11/28/1995 |
| 5449256 | Mill suitable for use in an office environment A mill suitable for use in an office environment because is constructed to collect particulates produced by the milling process without producing an undue amount of noise by this collection process. An isolation wall substantially eliminates particulate f... | 09/12/1995 |
| 5435675 | Machine tool A machine tool (10) comprises a spindle head (11) and a workpiece table (12), in which a first region is provided as a machining side (14) for first workpieces (17) for machining by means of a tool, and in which a second region as a loading side (15) can ... | 07/25/1995 |
| 5415503 | Portable drilling machine with internal motor control cord A portable electromagnetic drilling machine which is provided with an enclosed motor power control cord that connects the machine electrical control panel to a machine electric drive motor for a cutting tool spindle. The provision of an enclosed electric ... | 05/16/1995 |
| 5360072 | Drill rig having automatic spindle stop A drill rig which is equipped with one or more safety mechanisms designed to prevent injuries to rig operators. In a first embodiment, the safety mechanism includes a barrier which is shiftably mounted to the rig and surrounds the drilling tool when the b... | 11/01/1994 |
| 5342156 | Machine tool having partition plates for preventing splash of cutting fluid A first partition plate is fixed to an upper surface of a rotatable table to separate a work position from a standby position. A second partition plate is mounted to a lower end of a door, and a forked member is mounted to a lower end of the second partit... | 08/30/1994 |
| 5295770 | Air feed peck drill with pneumatic safety system A pneumatic air feed peck drill adapted to drill in repetitive cycles including a rapid advance phase, a slower drilling phase, and a rapid retract phase. The rapid advance phase ends and the drilling phase begins at a set back position, an adjustable dis... | 03/22/1994 |
| 5275514 | Drill support A portable workpiece-mounted machine tool such as a drill is provided with a permanent-electromagnet attaching unit which has its reversible permanent magnets alternating with nonreversible permanent magnets so that, when electric current is applied to th... | 01/04/1994 |
| 5191968 | Shaft lock arrangement for a power tool A router including an arrangement for locking the shaft against rotation and preventing power from being supplied to the motor when the shaft is locked. The shaft is locked by movement of a lock bar which traps a flatted portion of the shaft in an appropr... | 03/09/1993 |
| 5123149 | Turret tool post for machine tool and apparatus for controlling indexing of the same A turret tool post for a machine tool has a turret having a plurality of turret faces each equipped with a tool for machining, a turret shaft for rotating the turret, a cam follower provided on the turret shaft, a cam having a cam surface engaged with the... | 06/23/1992 |
| 5012846 | Cutting tool guard for a cutting machine In combination with an automatic shaping device having a feed device for feeding material to a cutting tool, a cutting tool guard movable between a lowered position beneath the cutting tool and a raised position surrounding the cutting tool.... | 05/07/1991 |
| 4975004 | Hot line attachment An apparatus for drilling into energized utility components without having to first de-energize them so as to allow continuous service to consumers is provided. The apparatus includes a drive shaft constructed of an insulating material terminating in a dr... | 12/04/1990 |
| 4893532 | Break away tool element and method of mounting A break away machine tool assembly includes a support to which a bearing plate is pivotally mounted in overlying and contiguous relation. A tool element overlies and is contiguous the plate and is movable therewith. Securement elements releasably secure t... | 01/16/1990 |
| 4818155 | Power tool system including adapter and coupling member therefor A power tool combination including a hammer drill, an adapter secured to the drill for attaching it to an elongated rod which bears on the floor, a pneumatic cylinder and piston unit mounted between the elongated rod and the drill for applying an uniform ... | 04/04/1989 |
| 4784544 | Link-band cover A link-band cover for guideways and moving parts of machine tools, as well as for other structural elements of machine tools that could lead to accidents. The cover includes individual rigid strips that can be sequentially arranged in a plane. Each strip ... | 11/15/1988 |
| 4738571 | Routing apparatus with dust extraction system In a preferred form, the dust extraction system is intended to be used in combination with a conventional router. The system includes a plate, one side of which confronts the router's ring base. The plate has a relatively small hole through which the cutt... | 04/19/1988 |
