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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 |
| 7381018 | Tool chuck The invention relates to a tool holder 1 for a rotating tool, especially a drilling head and/or milling head, comprising a drive shaft 4 that can be connected to a drive motor and a collet chuck 2 that is non-rotatably connected to the drive sha... | 06/03/2008 |
| 7305747 | Tap process for hard workpieces A process and apparatus for producing screw threads in hard material workpieces with a series of taps. The present invention employs a threaded bore formed in a bracket assembly to align and position multiple taps on a rotary machine. The taps are used in sequence t... | 12/11/2007 |
| 7290964 | Drilling/tapping/unscrewing apparatus A drilling/tapping/unscrewing apparatus including a transmission shaft of a power source on which a drilling ratio gear, a tapping ratio gear and an unscrewing ratio gear are mounted for transmitting the power of the power source to a bit. The apparatus further incl... | 11/06/2007 |
| 7287449 | Screwdriver with removable rod Screwing tool (1) having a grip (2) and a shank (3), which is received removably in a cavity (4) open toward an end of the grip (2) and which at its free end has an actuating portion (5). The shank (3) is retained in ... | 10/30/2007 |
| 7219753 | Tool holder for annular core bit A tool holder (1) for an annular core bit has a bit-side axial stop surface (4) and an end-side axial splined profile (3) extending in a bit direction. The tool holder has an outer thread (5) forming radial spline projections of the splin... | 05/22/2007 |
| 7220089 | Tool mounting device for turning center To provide a tool mounting device for a turning center that allows a rotating tool to be clamped/fixed using a shared clamp mechanism (8), and a turning tool (1B) to be clamped/fixed in an engaged/locked state in a turning center. In the turning center... | 05/22/2007 |
| 7195247 | Tool joint A joint is disclosed for connecting a handle with various bits. The joint includes an insert fit in the handle, a socket connected with the insert for receiving the bits, a first locking device installed on the socket for locking long bits to the socket and a second... | 03/27/2007 |
| 7192223 | Servo motor die tapping unit A servo motor driven tapping unit for in die installation has a tap holder pitch adapter assembly mounted for removal while the unit is in the die to facilitate tap and pitch adapter replacement. In one embodiment, the tap holder pitch adapter assembly extends trans... | 03/20/2007 |
| 7097399 | Cutting machine for gear shaping or the like A cutting machine includes linear electrical actuation for controlling linear reciprocating movement of a spindle and cutting tool. The cutting machine is suited for gear shaping cutting operations and the like. Linear electrical actuation may be used to control pos... | 08/29/2006 |
| 7066690 | Apparatus for repairing vehicle axles A boring apparatus and method for in-situ repair of motor vehicle axles includes a universal mounting plate assembly for attachment to a vehicle axle, both longitudinal (on-axis) and transverse (radial) adjustment assemblies, a bearing assembly and a boring bar and ... | 06/27/2006 |
| 7048479 | Machine tool apparatus A machining tool has a tool holder aligned on an axis of rotation β of its shaft, which axis β is oblique to the axis of rotation of a spindle at a predetermined angle θ. Accordingly, the machining tool may perform oblique machining of a workpiece. A power transm... | 05/23/2006 |
| 7001117 | Rotary cutting apparatus A rotary cutting apparatus comprises a rotary shaft assembly having an axis and adapted to hold a cutting tool coaxial with the axis and, a feed mechanism for moving the cutting tool held by the rotary shaft assembly along the axis of the rotary shaft assembly. The ... | 02/21/2006 |
| 6974284 | Cutter driving apparatus in boring machine A cutter driving apparatus has a spindle, a base, and a transmission shaft. The spindle has a cutter attached thereto. The base moves along the axis of the spindle. The spindle moves integrally with the base along the axis of the spindle. The base has a pair of supp... | 12/13/2005 |
| 6966730 | Shank installation structure and cutters A shank attaching structure with as less axial free movement as possible and of a simplified construction, a cutter for use with the shank attaching structure, and a cutter for use with the shank attaching structure which is free from an incident that the cutter bec... | 11/22/2005 |
| 6935637 | Workpiece connector for a power tool A connector (20) having an assembly (28) adapted to releasably receive an end (33) of a workpiece (22). ... | 08/30/2005 |
| 6902361 | Fixation device for a portable orbital drilling unit A fixation device for positioning a rotating machine tool onto a template, the template having at least one hole and at least one locating pin. The fixation device includes a housing with a housing tool end and a housing template end, a seat located on the housing t... | 06/07/2005 |
| 6634651 | Compensated tool holder for tapping spindles A tool holder for tapping spindles includes a coaxial body (5) composed of an upper hollow half-pin (6) and a lower hollow half-pin (9) which engage mutually and coaxially through a conic semielastic coupling (190) associated with a sequential threaded co... | 10/21/2003 |
| 6348003 | Self-synchronizing tap driver for rigid tapping Disclosed is a tap driver for rigid tapping, which includes predetermined tension and compression factors to self-synchronize the tap driver. In the preferred embodiment, the tap driver includes helical coils imparted in the tap driver body which allow th... | 02/19/2002 |
| 6280123 | Self-adhering drill and cutter The present invention is a low profile self-adhering drill having a feed mechanism having an axis of rotation, which is generally perpendicular to the axis of rotation of the drill motor. The feed mechanism includes a quill housing which houses a quill. A... | 08/28/2001 |
| 6231278 | Differential positive feed mechanism A differential positive feed mechanism that is coupled in-line or axially with a drill, reamer or cutter for use in limited access areas and feeds the tool into a workpiece when driven by an external rotary power source.... | 05/15/2001 |
| 6102633 | Feed system for a drill press A feed system for a drill press. The drill press comprises a base for supporting the drill press on a surface, a housing supported on the base and defining an opening, a telescoping spindle assembly positioned for movement relative to the housing along an... | 08/15/2000 |
| 5934846 | Chuck A chuck capable of rapidly sensing trouble occurring during work is provided. The chuck comprises a base body for rotating with a spindle of a machine tool; a concave hole disposed in a stem of the base body and open at the end surface thereof; a holder i... | 08/10/1999 |
| 5915892 | Thread-cutting chuck for CNC machine technology of rigid tapping A thread-cutting chuck for CNC machine technology of rigid tapping, with a clamping means held in a chuck shaft, particularly a collet chuck, for the tap, an accommodating part, which is held in the chuck shaft without clearance in the direction of rotati... | 06/29/1999 |
| 5902076 | Quill feed for a portable drill adapted to be mounted to a work surface A magnetic based drill assembly comprising a support platform mounted to the magnetic base for attachment to a work piece includes a feed mechanism operatively connected to the platform for rectilinear movement between a fully retracted position and a ful... | 05/11/1999 |
| 5642969 | Portable machine tool A machine tool comprises a mounting member for attachment to a workpiece. The mounting member includes a bearing portion that has an external surface of circular cross section and is formed with an aperture in its external surface. A utility device has an... | 07/01/1997 |
| 5458445 | Tool holder, in particular a fast exchange chuck A tool holder, particularly a fast exchange chuck preferably for thread cutting, thread shaping and the like has a receptacle having one end receivable in a machine spindle, a machine tool receptacle and the like, and another opposite end provided with a ... | 10/17/1995 |
| 5310292 | Linear roller tap driver assembly A rotary tool connecting assembly is provided for use as a tap driver for transmitting torque to a tap. The assembly comprises an adapter receiver for receiving and securing a tap, a chuck body having one end which is detachably connectable to the spindle... | 05/10/1994 |
| 5277526 | Apparatus with floating tool for drilling, boring, flaring and the like at a set depth using jigs An apparatus for controlling depth machining in a space and with the use of jigs, includes a body having two sliding parts biased by a spring and suitable for a drilling tool, with some clearance. One part is provided with couplings for assembling on a ma... | 01/11/1994 |
| 5263799 | Threading apparatus A threading apparatus has a rotatable and axially movable driving part, a driven part which is axially displaceable relative to the driving part and adapted for driving a threading tool, a switchable form-locking coupling device including a switching memb... | 11/23/1993 |
| 5238338 | Machining device operating inside a canalization A machining device is described which, after an old mains conduit has been decontaminated, that is, after it has been covered with a fluid-tight sheath, permits the obstructed secondary branches to be restored from inside the conduit. This device is made ... | 08/24/1993 |
| 5076740 | Toolholders for machine tools A toolholder for holding a cutting tool such as a tap in the spindle of a machine tool includes a torque-limiting clutch to prevent excessive load being applied to the cutting tool. The clutch comprises at least one ball located in sockets in the driving ... | 12/31/1991 |
| 5054974 | Tool holding device The tool holder, which serves principally for receiving a thread cutting tool, has a length compensation under tension and compression. This purpose is served by two compression springs which comprise massive elements of foamed, open and closed cell polyu... | 10/08/1991 |
| 5039260 | Driver element for use with rivet shavers The rivet shaver driver element of the present invention includes an internally threaded hollow cylindrical body. At one end of the hollow cylindrical body is located a drive slot. Along the length of the driver element are spindle locking slots. Wrench f... | 08/13/1991 |
| 4879929 | Tapper/threader assembly A tapper/threader assembly for use in a lathe is disclosed. The assembly has a piston member mounted for reciprocal movement with a sleeve housing, a shank member is connected to the piston member and an end extending from the housing. A mounting shaft fo... | 11/14/1989 |
| 4815899 | Tool holder and gun drill or reamer A tool holder for a gun drill or reamer has internal and external cylindrical rear end pilot portions and a radial pilot flange for precisely connecting coaxially with a rotatable and axially moveable power source. A sleeve confined coaxially within the i... | 03/28/1989 |
| 4669930 | Tap holder A tap holder e.g. for threading taps, has a drive body (1) intended for connecting to the chuck of a drive motor. The driving power is transferred by a torque-limiting device (2, 9, 11) to a clamping body (8) intended to clamp the shank (12) of the thread... | 06/02/1987 |
| 4668133 | Boring bar assembly A boring bar assembly for boring large diameter turbine bores in the field, the assembly utilizing a small hydraulic motor which drives a boring bar through an in line double reduction gear drive with a reduction ratio in excess of 100:1 and an output sha... | 05/26/1987 |
| 4551947 | Device for honing workpieces A device for honing workpieces. The device includes a rotatable and axially reciprocating honing tool which is guided by an upper and a lower end section in corresponding bearings of a workholding fixture, and also includes a drive rod between the honing ... | 11/12/1985 |
| 4547105 | Quick-change chuck A quick-change chuck for holding a tap of a tap drill comprises a member connectable to the spindle of the drill and a chuck head for holding the tool. The chuck is further provided with the device for an axial compensation for a difference between the sp... | 10/15/1985 |
| 4540319 | Drilling device for removing a spot-welded portion A drilling device for removing a spot-welded portion includes a main body casing having a chuck receiving holder, a U-shaped arm one an end of which is connected to a side portion of the chuck receiving holder, a grip handle pivotally connected to a base ... | 09/10/1985 |
