SU21727A1 - Racer for dotted lines - Google Patents

Description

The proposed rewedger for dashed lines consists of two with fillets around the periphery of the concave segments rotating on the bolt fastened in the handle, and provided with a spring that keeps them from shifting.

In FIG. 1 is a front view of the risfeder; FIG. 2 - the same, side view; FIG. 3 - view of the concave-convex segment from the front; FIG. 4 is the same side view; FIG. 5 is a view of the assembled sidefeder.

The cylindrical rod 1 (Figs. 1 and 2) ends with two flat plates 2, having holes 3 at the ends, into which a bolt 4 with a nut b is inserted (Fig. 5); Between the plates 2 two concave convex with an opening 8 segments 5 with fillets 7 along the periphery are put on the bolt 4 (Figs. 3 and 4); Between the segments 5 a spring 9 is worn on the bolt 4 (Fig. 5), the ends of which fit into the corresponding apertures of the segments.

The upper part of the G1, the cylindrical rod 1 is bifurcated for insertion into a compass when dashed draws circles or curves (Figs. 1 and 2). Spring 9 serves to prevent the ends of the segments 5 from coming together.

The action of the proposed reisfedera is that when drawing it, they get, thanks to the fillets, equal intervals between dashes on the segments; the thickness of the dotted line depends on the degree of tightening of the nut 6 on the bolt 4.

The subject matter of the invention.

A rasfeder for drawing dashed lines, characterized in that its sponges are made in the form of two circumferentially provided with fillets of disks rotatably fixed in the twist of the handle / and equipped with a spring, which serves to keep them from shifting.

FIG. I.

/ .A-J-S 3;

FIG. five.

FIG. 2

2 7