Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7331740 | Rail grooming machine and method of use An apparatus having a mounting body, a support having a first end and a second end. The first end of the support being pivotally secured to the mounting body for pivotal movement about a substantially horizontal primary pivot axis. A rail grooming head mounted to th... | 02/19/2008 |
| 7188431 | Method of and device for determination of penetration depth For determining a depth of drilling in objects a path over which a resistance is measured which is produced by an object to be processed counteracts a processing tool during its advance movement, and the measured path is used for determination of a depth of drilling... | 03/13/2007 |
| 7155826 | Motor spindle with improved machining precision and method for operating one such motor spindle A motor spindle includes a spindle shaft for receiving a tool. The spindle shaft is accommodated in the housing of the motor spindle in a fixed bearing and a loose bearing. The received tool enters into contact with the machined workpiece in a tool interface when th... | 01/02/2007 |
| 7121776 | Housing retrofit assembly for a milling machine or the like The present invention is a housing retrofit assembly for a milling machine or the like, including a quick adjusting stop nut for selective sliding coarse adjustment and rotational precision fine adjustment for rotatable engagement with a threaded rod or shaft in clo... | 10/17/2006 |
| 7114894 | Key cutting machine and method A key cutting machine for cutting a notch pattern on a key blank is disclosed. The key cutting machine comprises a pair of cutting heads and a clamp mechanism. Each cutting head includes a cutting wheel having an edge and an alignment structure mounted behind the cu... | 10/03/2006 |
| 6872036 | Hand tool apparatus for orbital drilling A hand tool apparatus uses a cutting tool with a first width and a tool axis to machine a hole in an object. The hole has a second width at least as large as the first width of the cutting tool. The tool axis passes through a predetermined point on a surface of the ... | 03/29/2005 |
| 6832878 | Automated quill drive assembly for a milling machine An automated quill drive assembly is adapted to be retrofit on a milling machine having a frame presenting a quill head and a quill supported on the head for rotation and for relative shiftable movement along a linear axis between retracted and extended positions. T... | 12/21/2004 |
| 6832879 | Machine tool for at least partial contour-dependent cutting or milling A machine tool (1) for the at least partial machining, contour-dependent cutting or milling of a component from a plate-shaped workpiece (2), for example a wood plate, is provided, and includes a suction device used as a clamping device for engaging on... | 12/21/2004 |
| 6733216 | Hand-held milling machine A hand-held milling machine (1) has a cutting tool (9, 10) which protrudes from a machine support (3) on the side facing the workpiece. A screw-type clamping mechanism allows the cutting tool (9, 10) and the machine support (3) to ... | 05/11/2004 |
| 6666242 | Wood planing machine with a height display unit A wood planing machine includes a base, screw rods mounted rotatably on and extending from the base, a cutter carriage mounted movably on the screw rods, and a detecting unit including a light transmitter and a light receiver that cooperates with the ligh... | 12/23/2003 |
| 6612790 | Housing retrofit for vertical milling machine The present invention is a retrofit apparatus for attachment to vertical milling machines. The invention generally comprises a main scale, a digital indicator, a mounting cover having a centrally located aperture for receiving the indicator and allowing v... | 09/02/2003 |
| 6558091 | Plunge base router A plunge base router for use in an upright and an inverted position is disclosed. The router includes a depth adjustment mechanism, a depth stop mechanism, a post lock mechanism, and a return spring defeat mechanism. The depth adjustment mechanism include... | 05/06/2003 |
| 6510879 | Device of depth index of a planing machine A device of depth index of a planing machine includes a bottom base, an upper base, an index device and a sensor device. The upper base is fitted with an index device at a preset position in the front. A push rod is pushed up to activate the index device ... | 01/28/2003 |
| 6488453 | Automated quill drive assembly for a milling machine An automated quill drive assembly is adapted to be retrofit on a milling machine having a frame presenting a quill head and a quill supported on the head for rotation and for relative shiftable movement along a linear axis between retracted and extended p... | 12/03/2002 |
| 6357975 | Automated quill drive assembly for a milling machine An automated quill drive assembly is adapted to be retrofit on a milling machine having a frame presenting a quill head and a quill supported on the head for rotation and for relative shiftable movement along a linear axis between retracted and extended p... | 03/19/2002 |
| 6308754 | Thickness-indicating device for a wood-planing machine A thickness-indicating device for a wood-planing machine includes a mounting member, a pointer, a vertical pushing rod, a resilient member, and a scale member. The mounting member is adapted to be disposed fixedly on the cutter seat. The pointer has a con... | 10/30/2001 |
| 6095728 | Translation apparatus Translation means is provided for translating positional movement of the cutting tool [56] of a cutting machine [10] to a digital readout assembly [60] provided for monitoring the relative positions of the workpiece support means [14] and the cutting tool... | 08/01/2000 |
| 6042311 | Chamfering apparatus A chamfering apparatus for chamfering a work has an adapter which surrounds a tool support, has one end fixed to a casing and the other end projecting from the casing, and is arranged coaxially with the axis of a rotating shaft. This chamfering apparatus ... | 03/28/2000 |
| 5947664 | Stop device for use with milling machines A stop device that can be readily interconnected with a variety of commercially available vertical milling machines to precisely control the vertical travel of the quill mechanism of the milling machine. The bolt-on stop device of the invention includes t... | 09/07/1999 |
| 5941663 | Automated quill drive assembly for a milling machine An automated quill drive assembly is adapted to be retrofit on a milling machine having a frame presenting a quill head and a quill supported on the head for rotation and for relative shiftable movement along a linear axis between retracted and extended p... | 08/24/1999 |
| 5855234 | Router table assembly with microset throat plate A router table assembly includes a removable throat plate having a frame with a generally-planar upper surface, and an opening formed in the frame's upper surface. A disc, supported within the opening for rotation about a first axis, includes a through-ho... | 01/05/1999 |
| 5795113 | Optical unit for image projection and tool incorporating same An optical unit for projecting an image including first and second locating lines for substantially eliminating the introduction of visual parallax error. In one preferred form, the optical unit is incorporated into a machine for performing a forming oper... | 08/18/1998 |
| 5779408 | Fluid control quill stop A quill stop for a milling machine, drill press, or other like machine. The quill stop includes means for automatic control of coolant flow. The quill stop includes a passage through which high pressure air flows. A valve in the passage controls the air f... | 07/14/1998 |
| 5662441 | Small scale milling machine A small scale milling machine including a machine base having an upright rotary wheel, a rotary column sleeve fixedly secured to the rotary wheel, a retractable support fixedly secured to the inside of the rotary column sleeve to hold a vertical mounting ... | 09/02/1997 |
| 5613813 | Router adjustment ring The height adjustment ring assembly is provided for adjusting height of a router motor housing relative to a router body, the router being movable between upright and inverted positions. The housing includes external threads formed thereon. The height adj... | 03/25/1997 |
| 5267818 | Arrangement for providing planar movement of a machine tool An arrangement for providing universal movement of a machine tool is provided in which there are parallelogram linkages, one of which has a link which maintains parallelism with a worktable and is movable in any direction in a plane. A machine tool is car... | 12/07/1993 |
| 4952159 | Chamfering machine A machine for chamfering the corner of an object comprising a rotating cutter arranged in a machine body and having cutting blades around the outer circumference of that portion of the rotating cutter which is projected from and tilted relative to an unde... | 08/28/1990 |
| 4881857 | Machine for chamfering the corner of an object to be processed A machine for chamfering the corner of an object comprising a rotating cutter arranged in a body, a slide guide pivoted slidably relative to the underside of the body and having guide planes perpendicular to each other and slidable along the corner of the... | 11/21/1989 |
| 4836725 | Adjustable tool-holder in machine-tools for slot milling Lathes usually have only two axes of movement for the tool, namely the directions of the displacement of the saddle and cross rest. Since power-driven tools are increasingly being used, especially in NC lathes, in which radial and axial slotting is perfor... | 06/06/1989 |
| 4770573 | Cutting depth adjusting mechanism of a router A cutting depth adjustment mechanism for a router having a nut engaged on a guide bolt for adjusting the depth of cut. Cutting depth can be coursely adjusted without rotation of the guide bolt relative to the adjusting nut. This can be accomplished by eit... | 09/13/1988 |
| 4676127 | Tool holding apparatus having cutting edge moving function The invention has as an object to provide a reliable, failure-free tool holding apparatus which allows digitization of a tool holding apparatus having a tool moving function, is free from various problems encountered upon digitization, and does not cause ... | 06/30/1987 |
| 4626151 | Tool alignment gauge A gauge is mountable upon the tailstock of a horizontal milling machine with one end of a pivotal angle arm engageable with a cutting tool and the other end thereof cooperating with calibrations on the base of the gauge to indicate alignment or misalignme... | 12/02/1986 |
| 4445811 | Setting mechanisms especially for tools for carrying out routing and like operations A tool or machine in which the relative position of two components is adjustable has setting means operable in a first mode to set the two components approximately to a desired setting and in a second mode to adjust the approximate setting accurately to a... | 05/01/1984 |
| 4425061 | Tool setting device for machining center A tool setting device for a machine tool (10) having a numerical control (22) includes a gage unit (24) with a frame (26) adapted to be secured upon a slide (20) of the machine tool. A photodetector, which includes a source (96) and a receiver (98), is mo... | 01/10/1984 |
| 4306472 | Machine tool A machine tool, particularly a lathe, milling machine or boring machine, having a machine bed on which a slide and/or tailstock is displaceably guided by means of at least one prism-shaped guideway. The guideway is formed by a guide bar which, as seen in ... | 12/22/1981 |
| 4272215 | Remote control countersink adjustment A surface of a wedge acts as a stop to limit travel of a spindle on an automatic riveting machine. A drive mechanism moves the wedge back and forth to vary the heighth of the wedge, and the same mechanism simultaneously moves a rod back and forth to act o... | 06/09/1981 |
| 4194543 | Grooving indexer for routing apparatus A grooving indexer is provided for use with routing apparatus to improve the capability of the apparatus for rapidly routing straight parallel grooves in cabinet doors and similar panels. The routing apparatus is of the type in which a router is mounted o... | 03/25/1980 |
