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 |
| 7367096 | Equipment for mechanical machining, in particular for the turning and drilling of light alloy wheels Equipment for mechanical machining, especially the turning and drilling of mechanical workpieces, such as light alloy wheels and the like, includes at least one turning unit with a double chuck to support the workpieces being machined and a turning head designed to ... | 05/06/2008 |
| 7343685 | Thread verification and chasing apparatus and method A thread checking apparatus and method for threaded bores in small plastic parts, in which a threaded tap is mounted to rotate on a fixed axis at a workstation, the workstation having guide structure associated with the rotating tap to slidingly engage and guide a p... | 03/18/2008 |
| 7267512 | Power assisted drill press A power assisted drill press having a feed cylinder fed by a variable pressure regulator which allows a user to controllably feed a bit and work material together while activating a drill motor to rotate the bit. An embodiment of the power assisted drill press utili... | 09/11/2007 |
| 7244083 | Cutting head assembly A cutting head assembly for use in cutting plate glass has a simplified drive train, all positioned about the vertical rotational centerline. The drive train includes a hollow bore drive motor having a drive adaptor directly engaged with a spline shaft that extends ... | 07/17/2007 |
| 7175374 | Machine tool A method and a device for detecting the incorrect chucking of a machine tool capable of easily and surely detecting a chucking error; the method, comprising the steps of measuring, by a sensor (12), the change of a distance (d) between the sensor (12) ... | 02/13/2007 |
| 7108459 | Power assisted drill press A power assisted drill press having a feed cylinder fed by a variable pressure regulator which allows a user to controllably feed a bit and work material together while activating a drill motor to rotate the bit. An embodiment of the power assisted drill press utili... | 09/19/2006 |
| 7037248 | Machine tool A method and a device for detecting the incorrect chucking of a machine tool capable of easily and surely detecting a chucking error; the method, comprising the steps of measuring, by a sensor (12), the change of a distance (d) between the sensor (12) ... | 05/02/2006 |
| 6955508 | Apparatus and method for separately boring precisely aligned opposing screw holes in individual frame members to be joined at a miter joint An apparatus and method for separately boring precisely aligned opposing screw holes in individual frame members to be matingly joined at a miter joint. The apparatus comprises a first boring means for boring a first screw hole in the first frame member, a second bo... | 10/18/2005 |
| 6786683 | Hand tool with electronic depth stop A hand tool device (1), for a partially rotationally driven drill tool (2), including an electronic depth stop (3) with a sensor (4) for non-contacting gauging of a distance and a calculator component (5) for calculating the depth ... | 09/07/2004 |
| 6490783 | Method of and apparatus for processing photographic photosensitive film When any of facilities of a film producing and packaging system suffers a failure, a film processing controller shuts off the film producing and packaging system. The operator repairs a failing facility and manually discharges a length of an elongate film... | 12/10/2002 |
| 5161925 | Apparatus for bringing a tool to a workpiece and applying axial force thereto, in particular as a tapping machine A tool head for moving a tool to a workpiece and applying an axial force thereto includes a grooved tubular spindle mounted on a fixed shaft for relative axial and rotational movement. The spindle is rotated by a timing belt transmitting power from a driv... | 11/10/1992 |
| 4807587 | Process of forming openings In a process using a hand-held drilling device for forming openings in a construction material containing steel reinforcing members, during the drilling step the electrical resistance between the drill bit and the reinforcing members is continuously measu... | 02/28/1989 |
| 4782567 | Workpiece transferring, positioning and machining system A system for transferring, positioning and machining a workpiece includes a transfer device for transferring the workpiece to a prescribed position, a positioning device disposed in the prescribed position for positioning the workpiece, a machine tool for... | 11/08/1988 |
| 4650375 | Drill braking system An electric drill safety device is provided for dynamically braking a drill when there is contact between the drill bit and an electrically conductive material. A first direction voltage is applied to the motor winding to turn the motor forward. When cont... | 03/17/1987 |
| 4288180 | Apparatus for truing bolting surfaces of wheels and the like A machine for truing both the tire bead seats, and the side surfaces of a web of a wheel. The machine has a work supporting station with radially inwardly movable bead seat deforming jaws, and top and bottom machining heads on slides which move toward and... | 09/08/1981 |
| 4280775 | Hole drilling machine and work positioning system A system for controllably positioning printed circuit boards or the like for the automatic drilling of holes therein. A plurality of individual work positions is provided, together with corresponding work carrier plates having individual or groups of circ... | 07/28/1981 |
| 4255955 | Automatic safety mechanism for forming machines The present invention relates to a safety mechanism for a multiphase forming machine, in which trigger signalling is used to automatically stop the machine by means of the insulation state formed between one leg of a clamp and a stock conveyor to which th... | 03/17/1981 |
| 4254676 | Workholding The invention relates to work holding and is concerned with the provision of a work holding device which is more efficient than known devices. According to the invention a work holding device comprises a device for gripping a workpiece, the device being p... | 03/10/1981 |
| 4180356 | Broken tool detector A detecting apparatus for machine tools with rotating spindles having adapter for holding tools such that when any of the tools engage an obstacle such as another broken tool or a workpiece, a signal is generated and is transmitted to a timer activated fo... | 12/25/1979 |
| 4064585 | Thread cutting machine An automatic thread cutting machine for nuts and similar mass-produced parts where the nuts or the like are taken from a magazine and moved through a feed trough into a guide where they are held secured against rotation and are then pushed by means of a p... | 12/27/1977 |
| 4056329 | Detection system for machine tools A detecting device and control system for use with machine tools to detect the breakage of a tool bit, the presence or absence of a portion of a workpiece, and other improper conditions that might result in the production of imperfect work, and to prevent... | 11/01/1977 |
| 4048879 | Stock sensing device An apparatus utilizes fluid pressure measurements to sense sufficient chucking stock for a chuck with work gripping surfaces. A flexible seal cooperates with a workpiece at a location proximal to the chuck jaws to restrict flow of a pressurized fluid. Flo... | 09/20/1977 |
| 4006655 | Device for protecting tools and workpieces from damage on a hydraulically or pneumatically operated stamping press A device for precluding improper operation of a stamping press including a control cylinder the piston of which is impinged on one side by a pressure medium and on the other side by a pressure medium having a variable constant pressure. Electrical switch ... | 02/08/1977 |
