SU21539A1 - Counting device - Google Patents

Description

The proposed calculating device is a slide rule in conjunction with accounts, the engines of which are placed in special sockets made in the body of the main ruler.

In the schematic drawing of FIG. 1 is a top view of the counting device; FIG. 2 - plate with windows for reading numbers; FIG. 3 is a section along line AB in FIG. 1 on an enlarged scale.

The counting device consists of a fixed part 1, provided with two parallel grooves 2, on the bottom of which digital plates 3 are placed; the projections 4 serve as a support for the sliders 5, which thus do not touch the plates 3.

In the slots 2, eleven sliders 5 are placed, provided with sockets 6 for a pencil or stick, with which the sliders are moved. The grooves 2 are covered with a plate 7 (Fig. 2), which is equipped with eleven windows 8 for reading the numbers on the plates 3.

The subject matter of the invention.

Counting device, characterized in that it consists of a slide rule, equipped in the fixed part with two slots 2 (Fig. 1) with digital plates 3 (Fig. 3) on the bottom and placed above the last sliders 5 having slots 6, which slots are covered plate 7 (fig. 2) with windows 8 for reading the numbers on the plates 3.

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