Did You Know...
...that the Eveready Battery began as an invention called the "electric flowerpot," which was a tube with a battery and light bulb inside? The idea was to fasten this gizmo to the side of a flowerpot so it would illuminate the flowers from the bottom. The idea died on the vine and the businessman who licensed the flower pot, Conrad Huber, was left with a pile of useless tubes -- until he found a way to market them as batteries to light the world!
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| Number | Title | Issue Date |
| 7329173 | Tool grinding machine A grinding machine, which includes a grinding wheel rotatable by a motor, a first slide movable in X-axis direction, a second slide supported on the first slide and movable in Y-direction, a bracket supported on the second slide and turnable about Y-axis, a tool hol... | 02/12/2008 |
| 7300334 | Drilling-head-grinding positioning device A drilling-head-grinding positioning device comprises a clamper for clamping a drilling head having a rectangular sliding rod and a sleeve clamping seat installed at a front end of the sliding rod, a cylindrical clamping device received in the sleeve clamping seat a... | 11/27/2007 |
| 7172498 | Drill sharpener A drill sharpener is provided which has a point-splitting port which simplifies the procedure for producing a split point on a drill bit undergoing sharpening. The point-splitting port is positioned relative to a grinding wheel assembly such that, when the drill hel... | 02/06/2007 |
| 7147546 | Tool holder with moveable alignment finger Method and apparatus for facilitating sharpening of a tool. A tool holder is provided to present the tool for sharpening against an abrasive member, such as a grinding wheel. A moveable jaw member preferably engages a side of the tool to align the tool with a refere... | 12/12/2006 |
| 7143489 | Multiple station tooling machine for manufacturing drill bits and other spirally grooved workpieces The present invention provides a multiple station tooling machine for the production of spirally grooved products and includes a base plate, a plurality of work stations distributed around the base plate and operable to effect selected tooling operations on work pie... | 12/05/2006 |
| 7121932 | Portable drill sharpener A portable drill sharpener includes a casing, a sand-wheel, a positioning device, a first grinding unit and a second grinding unit, a holding member for positioning a drill to be ground, a first adjustment unit and a second adjustment unit respectively connected to ... | 10/17/2006 |
| 6935937 | Tool grinding jig A hand tool grinding jig is described for use in co-operation with a grinding wheel. The jig has a tool clamp for clamping a hand tool and a leg is pivotally connected to the clamp to allow the angle between the leg and the clamp to be adjusted. An end of the leg re... | 08/30/2005 |
| 6926593 | Vehicle wheel hole deburring device and method A combined tool for both drilling a hole through a vehicle wheel and deburring the edge of the hole and a method for using the combined tool. ... | 08/09/2005 |
| 6824449 | Clamping assembly An apparatus for clamping a workpiece in a machine. The apparatus comprises an inner nose portion being rotatable about an axis of rotation and comprising a plurality of mounting surfaces, and, an outer ring portion rotatable about the axis of rotation and comprisin... | 11/30/2004 |
| 6676494 | Drill bit grinder structure A drill bit grinder structure includes: a seat body having a housing, an arched sideboard with a predetermined curvature being disposed on one side of the housing, a slide slot with a predetermined length being formed on the arched sideboard; a fitting me... | 01/13/2004 |
| 6652367 | Drill bit grinding device A grinding device includes a rotary grinding wheel having an annular grinding surface, a first grinding seat located in front of the grinding wheel, a sleeve disposed rotatably within a through hole in the first grinding seat, an abrasion measuring device... | 11/25/2003 |
| 6626745 | Precision drill sharpener and grinding wheel assembly therefor A precision drill sharpener and grinding wheel assembly is provided, as is a corresponding drill chuck for use with the drill sharpener, in which the drill sharpener includes a lever and spring clip alignment subassembly for properly positioning a drill i... | 09/30/2003 |
| 6283830 | Grinding control unit of a tool bit grinder A grinding control unit installed in a tool bit grinder and adapted to control the feeding of a bit relative to a grinding wheel of a grinding unit of the tool bit grinder, the grinding control unit including a U-shaped support, a chuck adapted to hold th... | 09/04/2001 |
| 6244938 | Drill grinder A drill grinder includes a grinding wheel mounted on a platform for fixed rotation about an axis. A first fixture is provided for properly orienting a drill bit in a chuck or collet. A second fixture is provided for guiding movement of a chuck or collet p... | 06/12/2001 |
| 6186876 | Apparatus for grinding welding electrodes, in particular wolfram electrodes The invention is a grinding apparatus for grinding tips of welding electrodes. An apparatus for grinding welding electrodes in accordance with the invention includes a drive motor for rotating a grinding disc and an electrode holder for fixing a welding e... | 02/13/2001 |
| 6113477 | Drill abrasive apparatus A drill abrasive apparatus, capable of grinding a candle-shaped drill requiring Z-type thinning, has a whetstone (1), a drill holder (5), a drill adjustable pedestal (2), a drill abrasive pedestal (3) and a drill thinning pedestal (4). An abrasive surface... | 09/05/2000 |
| 6110018 | Apparatus and methods of sharpening cutting tools An adapter for use with a powered grinding tool having a driven grinding wheel has a pivotally mounting part on a body thereof, and a drill bit holder engageable with the mounting part in either of two orientations for sharpening a tip of a drill bit clam... | 08/29/2000 |
| 6001002 | Hand-held drill bit sharpening tool A hand-held drill bit sharpening tool includes a hand grip portion adapted to be held in a user's hand and a clamp on the grip portion adapted to hold a drill bit for sharpening the tip on a grinding wheel. The bit is held in the clamp by thumb pressure o... | 12/14/1999 |
| 5788559 | Web adjust drill bit sharpener and method of using A process and apparatus for sharpening twist drill bits, for use with a rotary abrasive wheel. The apparatus has a vertical support plate connectable to a standard adjustable base. A cylindrical ring rotatably mounted in the support plate has a radial dov... | 08/04/1998 |
| 5735732 | Precision drill sharpener and grinding wheel assembly therefor A precision drill sharpener and grinding wheel assembly is provided, as is a corresponding drill chuck for use with the drill sharpener, in which the drill sharpener includes a lever and spring clip alignment subassembly for properly positioning a drill i... | 04/07/1998 |
| 5676591 | Bit sharpener A bit sharpener includes a casing with a front plate having a first tube extending therefrom and a rear plate with a plurality of first holes defined therein, the rear plate having a first tubular member and a first rod centrally extending from an inner s... | 10/14/1997 |
| 5649853 | Drill bit grinding machine A drill bit grinding machine including a grinding control device controlled to move the drill bit, permitting it to be ground by the grinding wheel, the grinding control device including a mounting base, a coupling block pivoted to the mounting base to ho... | 07/22/1997 |
| 5637036 | Power tool adapter An adapter (11) is of channel shape, having longitudinal projections (25) at its respective sides for engagement with undercut grooves (24) in a face of a casing of a powered grinding tool (10) with which the adapter is intended to be fitted to sharpened ... | 06/10/1997 |
| 5618028 | Power tool adapter An adapter (12) is of channel shape having longitudinal projections (25) at its respective sides for engagement with undercut grooves (24) in a face of a casing of a powered grinding tool (10) with which the adapter is intended to be fitter to sharpen hig... | 04/08/1997 |
| 5367836 | Automatic drill loader An automatic drill loader is used with a drill grinding machine to automatically present drills to the drill grinding machine workhead for being ground thereat and to carry ground drills to a storage receptacle. The automatic drill loader comprises a maga... | 11/29/1994 |
| 5353552 | Root-strength drill bit and method of making An improved drill bit having a shank of larger diameter than the body of the drill has an intermediate section rearward of the point section of the drill of smaller diameter than the point, and a longitudinally elongated, enlarged diameter root section jo... | 10/11/1994 |
| 5327685 | Electric drill completed with a set of grinding equipments The present disclosure relates to an electric drill characterized by a set of grinding equipments accommodated in an extended rear compartment of a housing of the electric drill. The set of grinding equipments mainly consists of a grinding wheel, a side c... | 07/12/1994 |
| 5319890 | Bushingless workhead A bushingless workhead comprises a flexible drill collet inside a flexible chucking collet. The chucking collet has external frusto-conical surfaces on the ends thereof that mate with corresponding frusto-conical surfaces on a pair of pistons. The pistons... | 06/14/1994 |
| 5263286 | Drill and drill grinding method and apparatus A drill having a pair of cutting edges formed at one end of a shank and arranged symmetrically with respect to a point, each cutting edge comprising a central edge portion and an outer edge portion, the central and outer edge portions each extending subst... | 11/23/1993 |
| 5241791 | Edge tool sharpening apparatus Edge tool sharpening apparatus for the sharpening of an edge tool having a shank (e.g. a wood drill bit), the apparatus including an axially rotatable abrasive element having a peripheral abrasive surface; and a support device having support surfaces to s... | 09/07/1993 |
| 5210977 | Drill grinding device In a drill grinding device with a grinding surface (7) disposed around a center axis (1), providing a conical grinding surface (8), a drill guide piece (11, 12) opposite the grinding surface with guide channels (13) which are parallel to the center axis f... | 05/18/1993 |
| 5184430 | Machine for machining edges, particularly of glass plates The machine for machining edges, particularly of glass plates, includes, on a supporting structure, mutually opposite conveyors which extend continuously and are suitable for moving the plates to be machined at machining heads. At least one of the conveyo... | 02/09/1993 |
| 5184431 | Apparatus for the grinding of workpieces, especially tools Appliance for the machining of workpieces, especially tools, such as, for example, for the grinding of drills, with a machining device, for example a double grinding unit, and with a receiver assigned to this and intended for the workpiece. The machining ... | 02/09/1993 |
| 5125186 | Drill grinding machine A drill grinding machine employs independent servo motors for drill rotation, drill lift, and drill feed. The three motors are connected through respective suitable drive mechanisms to a tubular spindle that is rotatably mounted within a work head. The wo... | 06/30/1992 |
| 4995301 | Tri-motion grinding fixture A fixture for holding and positioning reamers and other objects for grinding has a support base connectable to a flat horizontal surface and its upper portion is positioned at an angle relative to the horizontal surface. A cylindrical sleeve rotatably mou... | 02/26/1991 |
| 4974372 | Universal device for sharpening drill bits A sharpening device for sharpening drill bits on the flat surface of an electric grinding wheel or on a flat surfaced sharpening stone. The device includes a vise type drill bit holder which can accommodate various sizes of drill bits, the vise type holde... | 12/04/1990 |
| 4916867 | Drill bit sharpener The present invention provides a drill bit sharpening device, for use with a support carrying a rotatable grindstone and having pivot arm retaining means. The device comprises a drill bit jig having clamp means for releasably retaining a drill bit therein... | 04/17/1990 |
| 4858389 | Apparatus for grinding twist drills Apparatus for grinding twist drills comprises a drive shaft and a grinding wheel, which is coupled to said shaft and is mounted thereon to be axially movable and tiltable relative to the shaft and is spring-loaded toward a drill-guiding structure facing t... | 08/22/1989 |
| 4848036 | Grinding machine for drill bits A grinding machine for grinding a tip of a drill bit including a grindstone rotatably provided on a base; a drill bit holder provided on one side of the grindstone, the drill bit holder being pivotable about an axis parallel to the rotating axis of the gr... | 07/18/1989 |
| 4821463 | Drill bit sharpening apparatus A walking beam conveyor (54) delivers drill bits (B), one at a time, into a feed position. A pushrod (52) moves a drill bit (B) from the feed position into the nosepiece (36) of a robot arm (28). The drill bit (B) enters the nosepiece (36) shank end first... | 04/18/1989 |
