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...During the Civil War, the Confederacy established its own Patent Office which issued 266 patents, a third of which concerned implements of war.
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| Number | Title | Issue Date |
| 7441994 | Machine tool having a C-shaped frame A machine tool includes a machine frame, a worktable, and a spindle unit. The worktable is movable on the machine frame along a first horizontal direction, a second horizontal direction perpendicular to the first horizontal direction, and a vertical direction. The s... | 10/28/2008 |
| 7273333 | Methods and apparatus for counterbalance-assisted manufacturing operations Methods and apparatus for counterbalanced manufacturing operations are disclosed. In one embodiment, an apparatus for supporting a tool relative to a surface of a workpiece includes a base adapted to be attached to the workpiece, a tool support coupled to the base, ... | 09/25/2007 |
| 7201548 | Weight-compensating device The present invention relates to a weight compensating device comprising a carrier and a component which is supported on the carrier and is displaceable particularly in vertical direction by means of a drive, characterized in that the carrier and the component have ... | 04/10/2007 |
| 7172105 | Apparatus for positioning pipe and tubing A counterweight assembly is especially adapted for mounting to a spinner tool allowing a workpiece to be balanced when rotated during welding or other operations. The counterweight assembly has an adjustable counterweight to provide a necessary amount of counterbala... | 02/06/2007 |
| 7156590 | Quill lock assembly A quill lock assembly for locking a quill of a device such as a drill press is described. The quill lock assembly includes a cam assembly and a handle connected to the cam assembly. The cam assembly is connected to the device, such as with a mounting bracket or the ... | 01/02/2007 |
| 7147595 | CNC machine tool A CNC machine tool includes a worktable supporting two workpieces and rotatable on a base so as to exchange the positions of the workpieces. A post member is fixed on the base. A first horizontal rail unit is movable vertically on the post member. A second horizonta... | 12/12/2006 |
| 7018147 | Arrangement structure of machine tool The present invention provides an arrangement structure of a machine tool which is capable of compactly arranging electrical wires and pipes for coolant and the like without impairing support stiffness for a column, and simplifying the arrangement structure, while a... | 03/28/2006 |
| 6932549 | Mandrel-holding slide or sleeve pod for numerical-control machine tools In a numerical-control machine tool use is made of a mandrel-holding structure that makes it possible for the machine tool to be used to smoothing/facing and polishing purposes under utilization of traditional pan-like tools, in which the force acting on the working... | 08/23/2005 |
| 6910400 | Machine tool In a machine tool comprising a spindle mounting slide which is driven by a linear electric motor and which runs in a vertical direction in a slideway, the slide is equipped with a counterweighting device comprising an elastic element and a roller chain, the rigidity... | 06/28/2005 |
| 6902362 | Machine tool In an automatic machine tool (1) comprising a spindle mounting slide (4) which is driven by a linear electric motor (9) in a vertical direction (V) in a slideway (8), the slide (4) is equipped with a counterweight device (13... | 06/07/2005 |
| 6540459 | Apparatus for counterbalancing weight The invention relates to an apparatus for counterbalancing the weight of movable machine parts of a machine tool. A simply and compactly designed apparatus of this kind enabling a weight compensation even without complex pressure supplies is, according to... | 04/01/2003 |
| 5988959 | Spindle supporting box structure, a damping structure, a gas supply related device, and a balance cylinder gas actuated device for machine tools A spindle supporting box structure, wherein longitudinal parts forming both ends of lateral parts at each of right and left longitudinal side faces facing, with a spindle therebetween, in a direction almost perpendicular to longitudinal side faces facing ... | 11/23/1999 |
| 5569004 | Machine tool positioning arrangement A machine tool is provided in which a carriage is supported on the upper flat surface of a work table by first bearings. The carriage extends beyond the bearings in one direction to support a tool, so that the weight of the carriage and tool creates a mom... | 10/29/1996 |
| 5423237 | Machine-tool with machining head mounted for moving on a horizontal rail A machine tool having torsional compensation for the machine tool support. Generally, a machine tool head is movably mounted on a cross member in such a way that it induces a torsional couple in the cross member. A mechanism is provided for inducing a tor... | 06/13/1995 |
| 5370481 | Drill press for stereotaxic manipulator A drill press is provided for use in conjunction with a three dimensional stereotaxic manipulator. The drill press includes a body carried by a movable member of the manipulator wherein the body has upper and lower segments and at least one guide shaft ex... | 12/06/1994 |
| 4923345 | Device for adjusting the position of a tool-hoder head along an axis and process employing it A device and process for adjusting the position of a tool-holder head along an axis with the tool-head moving along a guiding element and with a pulley mounted to rotate freely on a shaft secured to the tool-holder head and which is moveable along a taut ... | 05/08/1990 |
| 4869626 | High speed drilling spindle A high speed drilling system is disclosed for high speed drilling of very small holes in workpieces such as printed circuit boards. The X-Y positioning system includes air bearings to provide lift between the stationary guide beams, the crossbeam and the ... | 09/26/1989 |
| 4697484 | Rotating drilling head A rotating head or the like having a drilling spindle and a tool carrier with an arrangement to finely adjust the tool carrier in a direction transverse to the axis of rotation of the spindle characterized by a wedge carrier which is mounted on the spindl... | 10/06/1987 |
| 4696197 | System for counterbalancing tool mount loads in a machine tool The invention is a system to counterbalance the static torque produced by a weight mounted to a beam member which in turn is rotatably mounted to a frame member, the beam member rotatable about the axis of rotation which is substantially aligned with the ... | 09/29/1987 |
| 4621407 | Body for machining center A machining center having an upright boxlike housing which projects upwardly adjacent the rear side of the table through a substantial vertical extent. The housing defines an interior chamber therein in which is positioned a movable support for mounting a... | 11/11/1986 |
| 4487536 | Distributing device of the pressure exerted by a machine-tool carriage on its slides An apparatus for making the pressure exerted by a machine-tool carriage on its slide uniform. Cams which load springs are used to apply pressure to the carriage in those regions subject to less pressure depending upon the position of the carriage. Distort... | 12/11/1984 |
| 4447178 | Horizontal drilling and milling machine with a headstock moving up and down in guides A horizontal drilling and milling machine comprises a vertically movable headstock and a spindle sleeve mounted for horizontal run-out from the headstock. Typically, an outer end of the spindle sleeve undergoes a vertical deflection relative to the headst... | 05/08/1984 |
| 4444534 | Vertical and horizontal machine tools A machine tool apparatus having a bifurcated column structure comprising spaced apart columns which enclose and slidably secure the mounting end of an arm, the opposite end of which receives a rotating spindle adapted to engage and rotate a variety of mac... | 04/24/1984 |
| 4402636 | Convertible machining center A machining center convertible between micro and macro machining operations with elimination of reactive spring back infeed pressures in the macro machining mode.... | 09/06/1983 |
| 4318432 | Workbench tool assembly A workbench tool assembly which takes the form of a frame upon which is mounted a drill press assembly movable between a stored position within the frame and an extended position above the frame. The drill press assembly includes a counterbalance mechanis... | 03/09/1982 |
| 4220311 | Clamping block for electrical hand drill A special clamping block in combination with a screw clamp fitted with a pair of bores, one bore provided on the top face of the screw clamp and the other bore provided on the outer side face of the screw clamp, the special clamping block having a clampin... | 09/02/1980 |
| 4165948 | Drilling and boring machine The invention relates to a machine for drilling and boring tubular plates, the workpiece-carrying elevator being embedded, weight compensation being provided by appropriate means, the machining units moving substantially at ground level opposite thrust tu... | 08/28/1979 |
| 4149822 | Headstock balancing arrangement for machine tools This invention relates to a machine tool having an upright column movably supported on a bed with a saddle movable along the guide surface of the column, supported on the bed of the machine tool and a headstock with a balancing arrangement, comprising a b... | 04/17/1979 |
| 4145845 | Method and apparatus for honing A recess in a workpiece is honed by a honing tool that is reciprocated in a succession of strokes back and forth in the recess as it is rotated about an axis of the recess. The stones of the honing tool are pressed by at least one hydraulic cylinder again... | 03/27/1979 |
| 4117762 | Machine tools with sliding tool-holding ram Machine tools with a horizontally sliding tool-holding ram in which a force is applied to the anterior end of the ram by a bar which moves with the ram, running on a first roller located on the front of the ram support, and under a second roller located o... | 10/03/1978 |
| 4091712 | Spindlehead with spindle driving motor A spindlehead arrangement having a headstock and a driving spindle motor mounted separately of each other for vertical movement on separate tracks. The headstock is capable of being removed from its set of supporting tracks without necessitating a removal... | 05/30/1978 |
| 4048902 | Balancing and compensating arrangement This invention relates to an arrangement for balancing and compensating for the overhang effect caused by longitudinal movement of a movable part of a machine along a supporting table, in which the said movable part is suspended at a point situated substa... | 09/20/1977 |
| 4033532 | Power tool support A hand held power tool is connected to a stable reaction point by means of a support device for balancing the reaction torque arising when operating the power tool. The support device comprises two or more links which are articulated relative to each othe... | 07/05/1977 |
| 3947144 | Counterweighted mechanical boom An articulated swivelling boom combination adapted to carry on one of its extremities a device, such as a camera, which it is desired to be able to move about smoothly in any direction of 360° in a given plane within a predetermined area. The combinatio... | 03/30/1976 |
