Compound sliding bevel square

Details Compound sliding bevel square Compound sliding bevel square

1993-10-05

1994-11-01

Cuchlinski, Jr., William A.

Geometrical instruments

Straightedge type

Multiplane angularly adjustable

33456, 33465, 33473, 33495, B43L 710

Patent

active

053597826

ABSTRACT:
An apparatus for measuring compound angles. This apparatus makes use of the standard T-bevel square, which is capable of measuring only a single angle. The invention is a compound angle blade with a split collet joint. The compound blade attaches by replacing the bolt of the T-bevel with fastening means attached to the split collet joint of the invention. This fastening means secures both the compound angle blade and the standard T-bevel square blade. The split collet joint which is attached perpendicularly to the main body of the T-bevel moves in a 360 degree radius parallel to the main body of the T-bevel. The compound angle blade is capable of rotation in approximately a 180 degree radius relative to the split collet joint. The combination of the rotation of the split collet joint and the compound angle blade allows for compound angle measurements both perpendicular and askew relative to the angle of the standard T-bevel. The angles of both blades are fixed by the same fastening action.

REFERENCES:
patent: 640194 (1900-01-01), Griswold
patent: 707461 (1902-08-01), Stedman
patent: 1222959 (1917-04-01), Longley
patent: 1691801 (1928-11-01), Fothergill

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