Geometrical instruments – Scriber – Curved line
Patent
1976-03-03
1978-01-10
Phillips, Charles E.
Geometrical instruments
Scriber
Curved line
B43L 1100
Patent
active
040671119
ABSTRACT:
In a kinetic sculpture apparatus, the lower end of a pendulum provides a scribe having a tapered tip that penetrates the surface of a bed of fine, particulate material to make an intricate pattern in the bed whose configuration is determined by the location of the pendulum's primary horizontal axis, the position from which the pendulum is released, and the depth of penetration of the tip of the scribe. A selectable pair of low friction, point bearings define the primary axis, and the intricacy of the patterns is enhanced by a resilient, upright standard that sways with the directional pull of the pendulum. The elevation of the pendulum is controllable in order to set the depth of penetration of the scribe and thereby control the depth and width of the lines of the patterns. In one modified embodiment, the weight of the pendulum may also be varied in accordance with the pattern configuration desired. A setup device is provided to suitably prepare the bed of particulate material for sculpturing.
REFERENCES:
patent: 898599 (1908-09-01), Pearce
patent: 1869951 (1932-08-01), Worington
patent: 3143807 (1964-08-01), Christie
patent: 3324556 (1967-06-01), Everett
patent: 3384966 (1968-05-01), Lias
patent: 3494037 (1970-02-01), Arber
patent: 3496641 (1970-02-01), Mills
Welch Scientific Apparatus & Supplies Cat., Oct. 1965, Sand Pendulum 0833, p. 89.
Cundy & Rollett, Mathematical Models, 1957, pp. 228-231.
Truitt, Device Entered in Application as Prior Art, 1972, "Retrospect."
Chase D. A. N.
Phillips Charles E.
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