Geometrical instruments – Scriber – Curved line
Patent
1979-02-09
1980-04-29
Haroian, Harry N.
Geometrical instruments
Scriber
Curved line
B43L 1100
Patent
active
041998677
ABSTRACT:
The invention provides a collapsible and compactable harmonograph adapted to generate compound harmonic oscillations and thereby record different, complex, consistent, geometrical patterns of diminishing scope, comprising a drawing surface suspended from a gimbal-mounted member by means of at least three flexible, collapsible suspension cords and at least two flexible, collapsible, cross-bracing diagonal cords, which drawing surface and its suspension constitute a first pendulum adapted to undergo pendulum-like oscillations in an infinite number of vertical planes, but to be substantially restrained from performing rotational or torsional oscillations about its central vertical axis by virtue of said diagonal cross-bracing cords; a second pendulum comprising a bob-like arrangement and a flexible, collapsible suspension cord attached to the bottom side of said drawing surface, and a stylus mountable independently of the drawing surface and adapted to contact the drawing surface at an adjustable contact pressure and to be held in positive contact therewith during the compound harmonic oscillation effected by the interaction of the two linked gravity pendulums.
REFERENCES:
patent: 3384966 (1968-05-01), Lias
patent: 3496641 (1970-02-01), Mills
patent: 3521360 (1970-07-01), Wulf
patent: 3590488 (1971-07-01), Padowicz
LandOfFree
Harmonograph does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Harmonograph, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Harmonograph will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1678508