SU69132A1 - Counting logarithmic device - Google Patents

Description

Countable logarithmetic instruments, made in the form of a clock, with a head for turning by means of a pair of crown gears of a disk with concentric right and inverse logarithmic scales and a frame without a starting line and a reversing turning arrow, have the disadvantage that the installation of the target arrow on the starting line The disk is only possible by manually turning the arrow head.

The present invention eliminates this disadvantage and automates the installation of a pivoting target arrow on the initial disc line, since the latter is connected with a spring arrow, which seeks to turn the arrow all the way into the pin mounted on the disc at the initial scale line, after releasing the torus of the disc, reinforced on the axis of the arrow.

FIG. i shows the diagram of the device; FIG. 2 is a front view of this device; FIG. 3 is a longitudinal section of the device and in FIG. 4 is a cross-section along the line AB of FIG. 3.

In the center of the housing / (Fig. 1) of the device, a tubular axis 3 is fixedly fixed (Fig. 1), on which a disk 2 is rotatably mounted with circular circular concentric logarithmic scales: external C, with the direction of increasing numbers clockwise and internal D - c reverse arrangement of numbers.

The disk is rotated by means of a pair of crown gears 6 and the go-out trunk 7.

Inside the tubular axis 3, the roller / O rotates freely, to which the cd of the side of the dial of the 2 rigidx is attached with the target arrow - /, and on the opposite side is the brake disc 5. The braking is carried out by constant pressure on the top. mozhnaya disk 5 spring // mounted on the body /. The brake is released by pressing the button 72 of the rod 13, which retracts the spring // from the brake disc 5.

On disk 2, a pin 8 is installed against the initial scale mark, to which only when the brake disk 5 is released, arrow 4 is pressed under the influence of a helix 30Ci

sing spring j7, one end of which is bonded to the disk, and the second - with an arrow. When the brake is not released, the drive is single, 9 does not loosen the shooter} - 4.

For fixing the initial / position of the disk 2, a fixed bench line 74 is applied to the Kopii.ce 7 priSyur or its glass, which also serves to read the results of actions on the scales of the disk.

The logarithmic scales C and D plotted on disk 2 (Fig. 2) have a common beginning and end. The outer scale C with the clockwise increment direction serves to postpone the multipliers when multiplying. and the inner r D, with the direction of increasing numbers back in the direction of the clockwise rotation, serves for postponing. dividers when dividing.

When the nerve is multiplied, the device is reset to its original position, the head 7 is set. From the initial line of the disc scales against the reference line 74 (Fig. 1) and pressing KZfonKy 72, release the brake arrow, which under the influence of iris reaches the pin S and accordingly automatically set; - / against the initial scale line and body.

Rotate the heads of 7 submits the first multiplier, counted on the knock C against the arrow, nazhilil on

Knossos} 72 combine the arrow with the beginning of the scale. Then, the second multiplier, taken along the scale C, is turned against the arrow, pressing the button combines the arrow with the beginning of the scale, and in the same way it is multiplied by the following factors. The product count is made on a scale C against the reference line 74.

When dividing, the action is done as if multiplied, with the only difference that the dividers are counted on the scale D. The result of the division is counted on the scale C against the reference {ratio 74.

Subject and purpose of

A counting logarithmic device, made in the shape of a clock, with a head for rotation through a pair of crown gears of a disk with concentric rules and reverse plates with logarithmic scales and a scaleless building-salt with an initial feature, characterized in that with the aim of automating the installation of a rotating vizarna arrow 4 to the initial line} of the disk 2. The latter is connected with the arrow of the dinner .9, which seeks to turn the arrow all the way to the pin S, mounted on the disk at the initial line of the click, after the release of the brake disk 5, strengthened on the axis direction.

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