Plastic and nonmetallic article shaping or treating: processes – With step of making mold or mold shaping – per se
Patent
1982-03-25
1983-06-28
Lowe, James B.
Plastic and nonmetallic article shaping or treating: processes
With step of making mold or mold shaping, per se
33 23H, 264225, 273176H, 425175, 425DIG30, B29C 102
Patent
active
043904912
ABSTRACT:
A method and means for contructing a three dimensional contour relief map, or the like, which comprises a housing having the opposite ends thereof open and having a plurality of upright side-by-side tubes disposed therein, the lower open end of the housing being in communication with a liquid reservoir, the lower end of each tube being open to the liquid through a check valve for controlling the admission of the liquid into the interior thereof, and the upper end of each tube being open, a pantograph type tracing or scribing instrument having a tracer for movement along the contours of the map being transformed into the three dimensional scale model and having an arm member movable over the open upper ends of the tubes simultaneously with the scribing of the map contour lines, a vacuum source in communication with the open upper ends of the tubes through the arm passing thereover for creating a selected pressure differential between the interior of the respective tube and the ambient pressure acting on the surface of the liquid reservoir for controlling the elevation of the liquid rising within the tube, and pin members slidably engagable with each tube for support on the surface of any liquid contained within the tube whereby the pins project upwardly from the open upper ends of the tube to provide a trace corresponding to the contour lines of the map, the projecting ends of the pins being adapted to receive a covering material thereover which may be hardened to provide a form for receiving clay or other workable material therein to provide the three dimensional scale model.
REFERENCES:
patent: 2410888 (1946-11-01), Lucy
patent: 3690673 (1972-09-01), Occhipinti
patent: 4148645 (1979-04-01), Gates
Becker Mary A.
Lowe James B.
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