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"Flight by machines heavier than air is unpractical and insignificant, if not utterly impossible."
Simon Newcomb, astronomer ; Said in 1902, less than two years before the first flight at Kitty Hawk
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| Number | Title | Issue Date |
| 7114261 | Apparatus for shaping a tile to conform to a contour A scribing device is provided that includes an alignment track, a scribe arm and a coupling unit for coupling the scribe arm to the alignment track at a predetermined angle. The coupling unit is configured to travel along the alignment track in an X direction while ... | 10/03/2006 |
| 5095625 | Adhesive applicator for contoured surfaces A method of causing an object to follow a fixed path comprises the steps of forming a rod into the shape of the fixed path, locating the object a fixed and precise distance from the rod by attaching the object to a rigid member which follows the rod and t... | 03/17/1992 |
| 5056229 | Sail plotter A device for marking lines on a piece of sail cloth for cutting out sections therefrom for making a sail, comprising an elongated and horizontally extending table for supporting a length of sail cloth thereon and being wider than the width of the sail clo... | 10/15/1991 |
| 5044085 | Table-top copying machine A table-top copying machine comprising a H-shaped sliding frame assembly mounted to slide forward and backward on the base frame thereof, a copying mechanism mounted to slide leftward and rightward on said H-shaped sliding frame assembly, a first position... | 09/03/1991 |
| 5009013 | Device in machines for the marking of workpieces The present invention provides a device to be used in machines which mark workpieces with characters or other symbols and have marking tools for applying the symbols to the workpiece, and elements for selecting the symbols and controlling the movements of... | 04/23/1991 |
| 5005296 | Plotter and ink pressurizing pump A pen plotter includes a means for applying pressurized air to the ink reservoir supplying the pen with ink. A pressure sensor associated with the pressurized air space provides an out-of-ink signal when the reservoir and pen become empty and the air pres... | 04/09/1991 |
| 4976036 | Assembly for detecting and recording surface contour data A surface examination assembly for examining surface contours by detecting nd recording surface contour data including profile data to determine the existence of variations of the surface from design specifications, and to determine the existence of struct... | 12/11/1990 |
| 4949466 | Drawing device having indexable stylus turret A drawing device adapted to produce line drawings or sketches on a transparent screen on top of a case partly filled with a powder that adheres slightly to the undersurface of the screen to render it opaque. Disposed within the case are transverse and lon... | 08/21/1990 |
| 4910872 | Hand-operated copying machine A hand-operated copying machine which can be efficiently operated to precisely perform copying process is including a frame assembly, a positioning adjusting mechanism and a vertical fixture assembly. The frame assembly includes a copying frame comprising... | 03/27/1990 |
| 4856197 | Drawing device having retractable stylus A drawing device adapted to produce line drawings or sketches on a transparent screen on top of a rectangular box-like case partly filled with a powder that adheres slightly to the undersurface of the screen to render it opaque. Disposed within the case i... | 08/15/1989 |
| 4833785 | Positioning systems A combination X-Y positioning mechanism includes a first guide means linearly reciprocable relative to a frame and a second guide means linearly reciprocable relative to the first guide means with the directions of relative reciprocation being substantial... | 05/30/1989 |
| 4779348 | Data plotter A data plotter includes a table for supporting a record sheet, a carriage movable thereon along one orthogonal axis, and a recording device carried by the carriage and movable with respect thereto along the other orthogonal axis. Relative movement is effe... | 10/25/1988 |
| 4697348 | Positioning systems An x-y positioning device in which a cable or chain is used to drive a carriage, powered by two motors. The same cable that moves the carriage also constrains the angular orientation of the moving mechanism. In so doing, the moving parts can be made light... | 10/06/1987 |
| 4635368 | Apparatus for making electronic circuit boards An apparatus for the automatic preparation of a prototype electronic circuit board from an electronic circuit layout comprising an X-Y-moveable worktable and a fixedly mounted engraving head which is controlled by electronic signals from a photoelectric m... | 01/13/1987 |
| 4550503 | Toy computer image processor assembly A toy computer image processor assembly wherein a toy assembly in the form of a simulated computer is provided with hand manipulated actuating members in a keyboard section connected to image producing means in a screen section to selectively move such im... | 11/05/1985 |
| 4493152 | Lettering machine A lettering machine is disclosed, which comprises a tracer support mechanism supporting a tracer at a corner such that the tracer can be freely moved to trace a letter or the like engraved on a tracing plate, a parallelogrammic horizontal component transm... | 01/15/1985 |
| 4295439 | Hand operated apparatus for applying a gasketing composition A hand-operated apparatus for applying a gasketing composition on a part comprising the improvement where there are template means, with a track means beneath the base on which the part is located in which in the track means there moves a roller means whi... | 10/20/1981 |
| 4104648 | Electric spark recording A graphic recording technique is disclosed for the enlargement of a relief configuration. A micro-stylus is used to scan the configuration laterally while measuring vertical irregularities in the surface; and a recorder stylus is synchronized therewith to... | 08/01/1978 |
| 4012027 | Metal cutting machine with scrap saving feature A machine for repetitive cutting of small identical parts from a relatively large metal plate. A scanning head is positioned on a carriage above a template which is mounted to a tracing table, and one or more metal cutting heads are also mounted on the ca... | 03/15/1977 |
