Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 7273080 | Power tool support fixture A support fixture for a hand-held power tool includes a base plate and a guide plate assembly supported for movement relative to the base plate to bring the working end of the power tool into contact with a workpiece on which the base plate is supported. The guide p... | 09/25/2007 |
| 7210509 | Chipping head A chipping head, particularly a chipping head of a chipping canter, is disclosed comprising a head body having thereon mounted multiple chipping knives that are adapted on the head body in an annular fashion spaced at a distance from each other. Onto the chipping he... | 05/01/2007 |
| 7011122 | Edge-routing unit for a program-controlled feed-through machine An edge-routing unit has a routing tool (4) on a shaft (9) of a routing motor (6), which is arranged on a rest (10), and which is controlled approximately along a workpiece outline in a workpiece feed-through direction, an X-axis, and in ... | 03/14/2006 |
| 6491575 | Tool for the removal of paint-like materials from work surfaces A tool for the removal of paint and putty includes a semi-circular assembly housing including a semi-circular rigid collar. The tool also includes a disk-like abrading assembly rotatably and co-axially mounted within the semi-circular collar of the housin... | 12/10/2002 |
| 6148880 | Flat-surface milling machine A planer-type face milling machine for processing wood having a drive motor that is coupled to a work spindle, which supports, on a free end, a milling head, which on its front side supports cutting edges, the milling head being configured particularly as... | 11/21/2000 |
| 6021827 | Machine for surface working of wood workpieces The machine for surface working of wood workpieces solves the problem of the quality wood workpieces working when passing over the working area of the working head, and when leaving it. The longitudinal central axis of the oblong static rotor, with therei... | 02/08/2000 |
| 4964446 | Machine for surface and thickness working of short and thin workpieces The invention relates to a machine for surface and thickness working of wood workpieces of any dimensions, in particular short and thin workpieces without rigid clamping of the workpiece, consisting of a machine housing, a movable working table, a two-par... | 10/23/1990 |
| 4813464 | Rotary resurfacing blade A rotary blade for a resurfacing tool. The blade has two or more sets of teeth extending essentially perpendicular to the plane of the main disk of the blade. The teeth of varying rows are configured to perform either a rough first cut or a smooth finish ... | 03/21/1989 |
| 4776402 | Method and apparatus for removing excess hoof growth Excess hoof growth is removed from the hooves of dairy cows and other hooved animals by use of a power tool equipped with an apertured cutter disk whose upper face can be viewed by the operator so as to see an image of the field or area of cut through the... | 10/11/1988 |
| 4700758 | Device for trimming the edges of veneer A device for trimming two opposite edges of veneer to provide parallel edges uses optical apparatus to scan the edges and determine the maximum width to which the veneer can be trimmed. The veneer is scanned at an inlet table upstream in the feed directio... | 10/20/1987 |
| 4690186 | Log feed apparatus A chipper wherein the rotary head has its rotational axis inclined slightly from being normal relative to a log's transport axis and a stationary guide plate, disposed centrally within the knives in the head, parallels such axis to support the side of a l... | 09/01/1987 |
| 4498512 | Lumber saw-sizing tool The invention comprises an attachment for a portable hand-tool for the dressing of lumber to obtain roughened or saw-sized surfaces. The attachment comprises a circular disk having a hub to attach it to a portable rotary drive such as a rotary hand-grinde... | 02/12/1985 |
| 4133361 | Method for machining joints for miters, grooves and other joinery in a beveled or straight panel edge and apparatus for same Improved method and apparatus for machining the mitered edge surface of a composite material panel uses a multibladed cutting head rotatable about an axis of rotation that intersects the surface. The cutting blades are positioned transverse to the axis of... | 01/09/1979 |
| 4077448 | Improved edging system An edging system for machining the opposed rough edges of a workpiece into a parallelogram having the optimum angle of cut has an upstream sensing station to detect the maximum available width in order to remove the least amount of material. At the edging... | 03/07/1978 |
| 4015648 | Sawmill A sawmill for cutting finished boards from logs in a single operation. The log is mounted on a reciprocating carriage which is also laterally adjustable to control the thickness of each board. Two vertically adjustable circular chippers are mounted on a v... | 04/05/1977 |
| 3941173 | Apparatus for machining the edges of panels, especially panels of wood material having hard glue layers thereon A method and apparatus for edge machining panels, especially panels having a hard glue layer thereon. Rotary edge cutting tools are presented to the panel edge to be cut. The tools having axially overlapping cutters thereon. There is moving of the tools b... | 03/02/1976 |
