Instrument for subdividing angles into halves, thirds or fifths

Details Instrument for subdividing angles into halves, thirds or fifths Instrument for subdividing angles into halves, thirds or fifths

1988-10-24

1989-09-19

Cuchlinski, Jr., William A.

Geometrical instruments

Miscellaneous

Light direction

3355802, G01B 524

Patent

active

048668486

ABSTRACT:
A simple drawing instrument for the subdivision of angles into halves, thirds and fifths comprises two planar pieces connected at a pivot point. Each piece has three curved edges, being the external edge of the part and the two edges of a curved slot within the part. The pieces can be rotated within their planes relative to each other. The instrument is operated by placing the axis of the pivot at the apex of the given angle, and positioning the reference markings on the two parts so they lie along the sides of the angle. The intersections of various curved edges of the two parts define the points that subdivide the angle into halves, thirds and fifths.

REFERENCES:
patent: 381049 (1888-04-01), Yanez
patent: 546336 (1895-09-01), Koppen
patent: 1010612 (1911-12-01), Garinger
patent: 1109479 (1914-09-01), Steed
patent: 2222853 (1940-11-01), Neurohr
patent: 2450167 (1948-09-01), Robinson
patent: 2892586 (1959-06-01), Graham
patent: 3224097 (1965-12-01), Izumi
patent: 3693261 (1972-09-01), Moore
patent: 3919777 (1975-11-01), Moore

Affiliated with

Also associated with

Rating

Instrument for subdividing angles into halves, thirds or fifths does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Instrument for subdividing angles into halves, thirds or fifths, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Instrument for subdividing angles into halves, thirds or fifths will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-359699