SU138066A1 - Universal Square - Google Patents

Description

The known universal angles are equipped on one of the slats with a retractable scale bar, using the same hook as the depth gauge, a protractor and plumb M. These angles are not universal enough, since they cannot be used to mark straight lines and circles and measure diameters.

In the present invention, this drawback is eliminated by the fact that the retractable large-scale ruler of the universal angle is equipped with a recirculated pointed plate serving as a leg of compasses, caliper or gauge, the second leg of which is a pointed plate extending from the second bar of the square.

The drawing shows the described universal angle.

The universal zgolnik contains two articulated 90 ° bars / and .2 with carefully machined surfaces A, B, C and G. A retractable scale bar 3 is inserted into the T-shaped groove of the bar /, the outer end of which attaches a pointed plate 4, intended for markup. A sharpened swivel plate 5 is attached to the inner end of the retractable scale bar 3, serving as one leg with compasses, calipers or gauges. The second leg is a pointed retractable plate 6, which moves along the bar 2. The plates 5 and 5 are fixed with screws 7 with bushings 8. The bars J 2 on the inner side of the universal angle are fitted with slots in which axles 9 are fitted with folding brackets 10 with plumbing holes. To prevent the retractable scale bar 5 from falling out in the T-slot of the bar / there is a flat spring //. Large-scale divisions are plotted on the nlank / from the outside of the universal angle and on the retractable scale bar 3. In plank 2, the protractor is divided.

When using the universal angle as the depth gauge, the base planes are the plane D of the plate 4 and the plane E of the bar /.

When using a universal square as a compass, a caliper or a surface gauge, the plate 5 is rotated and the plate 6 is advanced so that their sharp ends protrude beyond the limits of the bar L

Subject invention

A universal angle bracket, equipped with a retractable scale bar, which is also used as a depth gauge, with a protractor and plumb line, is different because, in order to increase its versatility and use for marking straight lines and circles, the scale bar applies a swivel pointed plate, which serves as a working leg of compasses, a caliper or a gauge, the second working leg of which is a pointed plate, which is extended from the second strip of a square.