Geometrical instruments – Scriber – Curved line
Patent
1994-09-23
1996-02-27
Fulton, Christopher W.
Geometrical instruments
Scriber
Curved line
33 2703, 33 301, B43L 1104
Patent
active
054937809
ABSTRACT:
A device for making a frame having at least two adjacent portions of distinct curvatures with a rounded joint between these two portions comprises a conventional carpentry caliper for outlining at least one of two portions on the frame, an accessory unit (for outlining the rounded joint) movably secured to the carpentry caliper and a cutting device secured to the accessory unit for cutting out the two portions and the joint therebetween. The accessory unit comprises a rod holding unit secured to the front end of the first rods on the carpentry caliper and extended a desired distance from the support of the carpentry caliper. A pair of parallel second rods is slidably secured to the rod holding unit, and a sliding block is slidably secured to the pair of the second rods. The second rods are revolvable in respect to the first rods. The sliding block, being in engagement with the rod holding unit, sets a desired radius of the joint.
REFERENCES:
patent: 1948952 (1934-02-01), Wallerius
patent: 3002280 (1961-10-01), Bennett, Jr.
patent: 5038841 (1991-08-01), Larmon
patent: 5189800 (1993-03-01), Morita et al.
Bloom Leonard
D.G.T. - S.R.L.
Fulton Christopher W.
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