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...that after Walter Hunt patented the safety pin in 1849, he sold the rights to it for $400?
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| Number | Title | Issue Date |
| 7220087 | Work processing method in machine tool, processing jig for performing the method, and support device for work processing A main shaft (6) movable in a direction of X-axis is provided at a position on one side of a foundation (1), and a lateral stand (12) is fixed on the top portion of the rotation support shaft (10). On the upper surface of the lateral stan... | 05/22/2007 |
| 7213315 | Machine tool provided with pallet changing module The invention relates to a machine tool, in particular to cutting machine tools. The inventive machine tool comprises at least two machining modules provided with at least one spindle with a horizontally oriented axis and at least one clamping module having a toolin... | 05/08/2007 |
| 7137940 | Machining center Machining is possible in such a manner that an optional position of a workpiece is positioned just under a tool by rotation of a turn table in a C-axis direction, movement of the turn table in a Y-axis direction, and movement of a spindle in a Z-axis direction, so t... | 11/21/2006 |
| 7134173 | Spindle head for a universal milling machine A spindle head for a universal milling machine having a housing rotatably mounted on a machine part and a work spindle mounted axially parallel in the housing. A second spindle unit adjustable about two axes is disposed on the rear side of the housing. ... | 11/14/2006 |
| 6938312 | Work pallet A work pallet that is arranged to be simple in construction capable of machining five faces of a work by rotating it around the axis of rotation. A work pallet (4) comprises a base body (5) detachably fixed to the table (3) of a machine-tool ( | 09/06/2005 |
| 6920679 | Machine tool A machine tool in which the workpiece is transported by a pair of longitudinal carriages with transverse and vertical carriages supporting the workpiece holders to a machining region from a workpiece replacement region. In the machining region the workpiece is displ... | 07/26/2005 |
| 6823572 | System for carrying out mechanical workings A machine for carrying out mechanical workings preferably by showing removal includes a frame arranged for receiving a semi-worked piece having a cross section exhibiting dimensions remarkably smaller than the length of the piece measured along its own longitudinal ... | 11/30/2004 |
| 6749377 | Process for edge-machining of optical lenses A process for edge-machining an optical (spectacle) lens including preliminary machining of an edge of the lens rotatable in controlled manner about a rotational axis of a workpiece by a first edge-machining tool adjustable radially relative to the rotational axis o... | 06/15/2004 |
| 6623222 | Machine tool with horizontal work spindle In a machine tool (2), in particular for cutting treatment of workpieces (9) comprising a machine frame, a workpiece table (15) borne on the machine frame and an approximately horizontally disposed processing unit (8) which is mounted to the machine frame... | 09/23/2003 |
| 6619895 | Machine spindle actuating indexing unit The invention relates to a workpiece support assembly including an indexing unit adapted for the automated adjustment of a workpiece being machined. The assembly includes a central support column having at least one indexing unit secured thereto. The inde... | 09/16/2003 |
| 6457919 | Multi-purpose machine tool for high volume secondary operations A multi-purpose machine tool is provides for high volume secondary operations. Multiple machining heads and eight degrees of freedom provide for maximum versatility and adaptability for convenient set-up.... | 10/01/2002 |
| 6442814 | Apparatus for manufacturing a bone dowel Apparatus for manufacturing a bone dowel includes a machine base with tracks on a surface thereof. Modules configured to slide in the tracks may include a module for a high speed rotary tool, a collet module, a vise module and a threading module.... | 09/03/2002 |
| 6257811 | Machine tool with a working area extending outside a workpiece table A machine tool has a vertical-axis tool spindle that receives a tool, and a workpiece table on whose upper side is arranged a fixture for clamping in a workpiece. The tool spindle and workpiece table are displaceable relative to one another in a working r... | 07/10/2001 |
| 6131259 | Drilling and milling mechanism for machining material rods A movable column is adjustable longitudinally and transversely in controlled fashion on a machine bed which defines a longitudinal direction and a transverse direction. A tool spindle is adjustable in controlled fashion on the movable column along a spind... | 10/17/2000 |
| 5957638 | Apparatus for machining of bar material, profiles and the like Apparatus for the machining of bar material, profiles and the like comprises a rotation mechanism with a rotational drive. The rotation mechanism has a workpiece holder which holds the workpiece, and the said workpiece holder rotates about an axis paralle... | 09/28/1999 |
| 5909988 | Universal combined milling and boring machine A universal combined milling and boring machine having a machine column, a compound slide that can traverse horizontally on the machine column, a spindle head mounted on the compound slide so that it can traverse vertically, with a work spindle, a rotary ... | 06/08/1999 |
| 5868606 | Method of manufacturing a copying cutter The present invention relates to a copying cutter provided with a cylindrical or conical body having a spherical end, constituting the active portion of the cutter, said end including a plurality of flutes inclined at a determined angle θ relative to the... | 02/09/1999 |
| 5802698 | Method of moving a rotary fixture An improved method of moving a rotary fixture (20) from a first angular position to a second angular position includes the steps of: providing a body (25); mounting the fixture on the body for rotational movement about an axis (x--x); mounting a pin (23) ... | 09/08/1998 |
| 5682805 | Ultrasonic motor having a vibratory body and method of producing the same An ultrasonic motor with a vibratory body which has plural groove groups formed in a surface of the vibratory body. Each groove group has at least two grooves which are formed parallel to one another. If the vibratory body has an annular shape, a groove f... | 11/04/1997 |
| 5507617 | Regenerative turbine pump having low horsepower requirements under variable flow continuous operation A regenerative turbine pump apparatus which includes a housing having an inlet and an outlet and a generally circular impeller having a circumference and a geometric axis. The impeller is mounted for rotation within the housing about the geometric axis an... | 04/16/1996 |
| 5481945 | Lock plate adjustment for geneva drive mechanism A machine tool has a rotatable table with a plurality of lock plates located on the underside thereof at circumferentially spaced locations, and a geneva drive mechanism arranged to coact with the lock plates in rotatably indexing the table. The lock plat... | 01/09/1996 |
| 5305506 | Formation of an element for an article of jewellery The invention relates to the formation of an element, called an "illusion", for an article of jewelry, including a method for forming an illusion, and a device for forming an illusion. First and second substantially parallel grooves are formed in an opera... | 04/26/1994 |
| 4987668 | Machine-tool The spindle of a machine-tool is mounted on a carriage movable along a horizontal transverse member which is carried by the columns of a part of the frame of the machine having the shape of a closed porch, and which is situated in front of these columns. ... | 01/29/1991 |
| 4921378 | Rotary-pallet system Rotary-pallet system, in particular for multi-directional machining of the pieces (8) to be machined. In the said system there is a body piece (2), one of whose ends (A) is attached to a holder, which said body piece is rotable around a longitudinal axis ... | 05/01/1990 |
| 4902175 | Method and apparatus for determining the angular position of a workpiece and positioning the same A method and apparatus for determining the angular position of a workpiece and for positioning the same relative to at least one tool. The workpiece has at least one set of teeth. Pulses are derived from a rotating reference workpiece and from a reference... | 02/20/1990 |
| 4860414 | Indexing and transporting mechanism An indexing and transporting mechanism having a plurality of work-holding spindles spaced around a carousel, the carousel being journaled on a machine frame provided with work-performing stations and being indexable to carry the spindles sequentially from... | 08/29/1989 |
| 4860413 | Method of and apparatus for use in forming diametrically opposed studs on tubular connectors Diametrically opposed studs are formed from a flange on the unfinished portion of a tubular threaded connector by first milling the flange to leave diametrically disposed portions of a cross sectional area such that a stud may be formed from each such por... | 08/29/1989 |
| 4850764 | Machine tool A machine tool comprises a spindle stock that can be moved along several axes. A work table can be rotated alternately in opposite directions by an angle of, preferably, 180° about an axis extending perpendicularly to the table surface in such a manner t... | 07/25/1989 |
| 4797990 | Vertical machining center with a rotary pallet changer A vertical machining center equipped with a rotary pallet changer, the center comprising a pallet clamp unit provided along the front face of the bed, with the clamp unit holding a pallet in a vertical position, and being capable of rotating around a hori... | 01/17/1989 |
| 4651404 | Machine tool A machine tool having an indexable workpiece support and a tool holder which is moveable to enable the machine tool to operate on different parts of a workpiece while the latter is held stationary by the workpiece support, indexing of the workpiece suppor... | 03/24/1987 |
| 4576213 | Method and apparatus for machining a door or the like A table, movably carried upon a stationary base, is provided with a fixed jaw and a movable jaw for gripping the lateral edges of a door or similar panel-like workpiece. The table is movable in reciprocal directions against adjustably positionable stops t... | 03/18/1986 |
| 4565475 | Drill point milling machine and method A method and apparatus for milling drill points in screw blanks. Form relieved milling cutters are rotated at unusually high speeds to produce high performance screws at improved rates of production. The cutters can be adjusted in a simple manner to achie... | 01/21/1986 |
| 4523360 | Piece-holder table revolving intermittently in machine tools A table (1) revolving intermittently and carrying on its periphery piece-holder grips, has central openings (11), which make possible the discharge of working shavings and wastes at the center of the table itself (arrow 12) and not at the periphery (arrow... | 06/18/1985 |
| 4512380 | Apparatus for the transverse and/or longitudinal machining of wooden workpieces The invention relates to apparatus for the transverse and/or longitudinal machining of wooden workpieces, comprising a workpiece carriage for mounting a workpiece or a plurality of workpieces thereon and adapted to be displaced in the direction of the X-a... | 04/23/1985 |
| 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 |
| 4422265 | Multistation grinding machine A multi-station grinding machine has a worktable mounted on a machine bed to rotate about a principal axis. The worktable has a plurality of workpiece holding devices at equal angular intervals around the axis and uniformly spaced therefrom, each holding ... | 12/27/1983 |
| 4292006 | Manufacture of ceramic ware A handle-cutting device comprises a conveyor in the form of a horizontal table arranged to be rotated step-by-step to bring handle holders in turn to a handle-cutting station where the handle is lightly clamped. While the holder is stationary at the handl... | 09/29/1981 |
| 4190390 | Apparatus for machining critical surfaces of railroad truck side frames Disclosed is an apparatus for permitting automatic and manual machining of critical wear surfaces of railroad truck side frames. A fixture is rotatably mounted on a base. The railroad truck side frame is mounted on the fixture with the fixture and side fr... | 02/26/1980 |
| 4099431 | Internal milling machine for milling crank pins The machine of the present invention is an internal milling machine designed to mill the crank pins and crank arm cheeks of heavy crankshafts to precise dimensions. By relatively simple substitutions of gage blocks, the machine is capable of milling crank... | 07/11/1978 |
