Rotary circle template

Details Rotary circle template Rotary circle template

1992-10-05

1995-01-31

Will, Thomas B.

Geometrical instruments

Scriber

Curved line

33565, B43L 904

Patent

active

053849647

ABSTRACT:
A rotative drawing template, used to draw various sizes of circles. The template is circular in configuration and is held at its periphery by equally spaced balls running in between two bearing races; one located in the periphery of the template and the other race, located in the surrounding template support. This enables the template to freely rotate without lateral movements.

REFERENCES:
patent: 1154673 (1915-09-01), VanNess
patent: 2624117 (1953-01-01), Paci
patent: 2958132 (1960-11-01), Hartbauer et al.
patent: 3465445 (1969-09-01), Fisher
patent: 4129948 (1978-12-01), Hatter et al.
patent: 4530156 (1985-07-01), Kettlestrings
patent: 4899449 (1990-02-01), Fouladian
patent: 5125161 (1992-06-01), Guthrie

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