Trisector

Details Trisector Trisector

1992-08-25

1993-05-18

Cuchlinski, Jr., William A.

Geometrical instruments

Miscellaneous

Light direction

B43L 908

Patent

active

052109518

ABSTRACT:
An instrument for trisecting an angle has two circular plates and four pointers. Two pointers are to define a given angle which can be an acute angle or obtuse angle. Two other pointers are to divide the given angle into three equal angles when they are perpendicular each other.

REFERENCES:
patent: 2222853 (1940-11-01), Neurohr
patent: 3906638 (1973-09-01), Romano
Yates, "The Trisection Problem", 1942, pp. 7-9, 29-30, 42-44.
Washington Post, Section II, p. 1, Jan. 6, 1948, "D.C. Man Invents Device to Trisect Angle Easily".

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