Did You Know...
...that in 1800 ether was first used by partyers as a fun diversion? Sniffing the gas led to hilarious and raucous laughter as people watched each other become more and more intoxicated and silly. Several doctors independently realized the value ether would have to anesthetize surgery patients. Of those who claimed rights to the "discovery," none had a happy ending. One had a seizure and died defending his rights. Another spent his life in an asylum because he had been denied acclaim. A third became addicted to chloroform and, in a New York City jail, he soaked a cloth in the drug, severed an artery and bled to death.
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| Number | Title | Issue Date |
| 7435159 | Rotary jig A jig intended in use to hold a series of blanks of rod-like or wire-like form during machining, the jig having a body adapted to be mounted to a drive shaft for rotation of the body about an axis of rotation, the body having a perimeter which on rotation of the jig... | 10/14/2008 |
| 7329172 | Rotary mower blade sharpener having movable griding wheels A device and method for sharpening a mower blade are provided, in which a mounting device for mounting a rotary blade having two opposite cutting edges to be sharpened, wherein the mounting device is capable of positioning the blade in a first fixed state and a seco... | 02/12/2008 |
| 7220169 | Sharpening apparatus A sharpening apparatus (16) for a blade-like cutting implement. The sharpening apparatus has an elongate body (18) and a cutting edge extending widthwise across one end of the body (11) at a predetermined angle relative to the longitudinal axis ... | 05/22/2007 |
| 7175512 | Cutting chain grinder and method of grinding A cutting chain bench grinder includes a self-centering vise that centers the cutting chain on an axis of rotation of the vise base. By centering the cutting chain to intersect the vise base axis of rotation, consistent top plate lengths and hook angles can be groun... | 02/13/2007 |
| 6942551 | Method for forming a cutting edge along an edge portion of a blade stock A method for forming a cutting edge along an edge portion of a blade stock, wherein the method includes moving the blade stock with respect to a first cutting element rotating about a first rotational axis, the first rotational axis forming one of an acute angle and... | 09/13/2005 |
| 6902469 | Work chamfering apparatus and work chamfering method A work chamfering apparatus includes a work holding portion. The work holding portion includes a work table and a clamper. The work table has an upper surface having two end portions each formed with holding grains projecting out of the upper surface. The two end po... | 06/07/2005 |
| 6589104 | Electric chain saw sharpening machine The present invention relates to an electric sharpening machine for chain saws capable of correctly sharpening the teeth at any number of desired cutting angles within a given range; this system according to the invention allows rotation of an upper porti... | 07/08/2003 |
| 6572459 | Machine for machining in particular superfinishing, cylindrical surfaces of circular cylindrical workpieces, using an abrasive belt moving tangentially Machine for machining using abrasive belts circular workpieces supported by at least one pair of parallel rollers. To pass the workpieces under the machining station(s) 6, the support rollers 16 driven in rotation are moved in translation parallel to their ... | 06/03/2003 |
| 6471569 | Rotary mower blade grinder A device for grinding a rotary mower blade (16), the device comprising an adjustable support for receiving a rotary mower blade, means for fixing the blade relative to the support, means for feeding the support and blade both axially and transversely rela... | 10/29/2002 |
| 6193591 | Loading system and collect assembly for grinding a workpiece An assembly for holding a cylindrical workpiece for grinding, including a support frame having at least one support arm extending to initially hold the workpiece and operable to disengage from the workpiece during grinding, a tailstock slidably mounted on... | 02/27/2001 |
| 5823856 | Apparatus for the resharpening of two-dimensionally acting knife sets for flaking machines, especially for wood flaking machines The invention relates to the resharpening of two-dimensionally acting knife sets in knife rims as they are used for the industrial production of wood flakes from long logs and wood cut to length. Each knife set consists of a knife plate provided with a cu... | 10/20/1998 |
| 5711701 | Universal polishing fixture for holding connectors A polishing fixture (20) having nests (48) for releasably holding optical fiber connectors during polishing, inclined beams (44a) being deflectable to narrow the nests (48) and hold optical fiber connectors received in the nests (48), and a force transmit... | 01/27/1998 |
| 5601473 | Skate sharpening apparatus and method An apparatus and method for sharpening skate blades operate by measuring the length of a skate blade, determining a predetermined profile corresponding to a desired radius of curvature for the blade, and coordinating the motion of a grinding wheel and the... | 02/11/1997 |
| 5218787 | Apparatus for sharpening implements A fixture form of apparatus is provided which performs in conjunction with a typical bench grinder to retain and maneuver implements having to be sharpend such as mower blades. The apparatus includes a base member upon which is mounted a forwardly dispose... | 06/15/1993 |
| 5127194 | Apparatus for sharpening the blade of a skate The present invention is directed to an apparatus for sharpening the blade of a skate which provides more precision that prior art sharpeners. The apparatus comprises a circular grindstone which can pivot from a work position to a rest or sharpening posit... | 07/07/1992 |
| 5018310 | Knife sharpener A grinding device (2) is inserted in the synthetic resin housing (1) of the knife sharpener, this grinding device consisting of a supporting unit (3) with two resiliently designed supporting arms (6, 7) for two grinding wheels (8, 9). In the installed con... | 05/28/1991 |
| 5009038 | Automatic chamfering machine An automatic chamfering machine for ceramic honeycomb structural bodies and the like workpieces is disclosed, and includes a clamping device by which a workpiece is clamped and caused to rotate in one direction. The movement of a grinder wheel with respec... | 04/23/1991 |
| 4984391 | Machine for forming woodworking tool A grinding machine for grinding a woodworking tool shown as knife to a predetermined shape includes two main tables. The upper table moves toward and away in a Y direction from the grinding wheel and a lower table that moves left and right in an perpendic... | 01/15/1991 |
| 4558541 | Ice skate sharpening method A machine for sharpening the blade of an ice skate has a vertically mounted, thin grinding wheel with a convex transverse cross-section corresponding to the concave transverse cross-section desired for the blade edge. Clamping plates on a cradle hold the ... | 12/17/1985 |
