Geometrical instruments – Scriber – Curved line
Patent
1975-11-24
1977-03-29
Haroian, Harry N.
Geometrical instruments
Scriber
Curved line
33 31, B43L 1104
Patent
active
040141012
ABSTRACT:
An ellipse drawing instrument which makes it possible to draw an ellipse easily and precisely without requiring special skill. The size and angle of the ellipse can be changed steplessly by a simple adjustment. It includes a base plate, a movable plate, a swivel arm, a swaying lever coupled to the movable plate and the swivel arm, and a writing implement carriage coupled to the movable plate and the swaying lever. When the swivel arm is turned, the writing implement carriage is given movements in two directions which are synthesized into an elliptical motion with respect to the material on which the ellipse is to be drawn.
REFERENCES:
patent: 2415283 (1947-02-01), Hobson
patent: 3500544 (1970-03-01), Hill
patent: 3724080 (1973-04-01), Kane
Haroian Harry N.
Shepperd John W.
Shinichi Yamaoka
LandOfFree
Ellipse drawing instrument does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ellipse drawing instrument, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ellipse drawing instrument will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-542697