Beam compass

Details Beam compass Beam compass

1984-10-09

1985-09-24

Little, Willis

Geometrical instruments

Scriber

Curved line

33158, 33160, B43L 904

Patent

active

045425884

ABSTRACT:
A beam compass including a base having a center pivot pin and a bore, and including a portion extending from the base to a center pivot reference point. An elongated beam member is mounted within the bore such that the base is slidably and revolvably adjustable along the length of the beam member. A pencil or pen guide is carried by an outer end of the beam member for guiding a marking instrument. The guide includes a first portion extending from the beam member to a first reference point. The first portion defines at least one aperture. A marking instrument positioned to project through the aperture will engage a drawing surface. An arc or circle traced by rotating the marking instrument relative to the center pivot on the base will have a radius equal to the distance between the first reference point and the center pivot reference point.

REFERENCES:
patent: 692147 (1902-01-01), Kimbrell
patent: 1500623 (1924-07-01), Hurd
patent: 2104515 (1938-01-01), Golden
patent: 2752683 (1956-07-01), Crane
patent: 2943392 (1960-07-01), Attridge
patent: 3002280 (1961-10-01), Bennett, Jr.
patent: 3430347 (1969-03-01), Minniear
patent: 3513548 (1970-05-01), Itano
patent: 3797118 (1974-03-01), Yamamoto
patent: 4267638 (1981-05-01), Heinz

Affiliated with

Also associated with

Rating

Beam compass does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Beam compass, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Beam compass will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1608248