SU3354A1 - Countable logarithmic disk - Google Patents

Description

FIG. 1, the proposed logarithmic disk is shown on the upper side; in fig. 2 is a section along the diameter and in FIG. 3 shows a coupling device for the co-movement of the arrows.

By type, the proposed countable logarithmic disk belongs to devices with a fixed dial and moving arrows and is intended to perform arithmetic and algebraic operations on numbers and, instead of arithmometers and slide rules, on which these actions may not be fully implemented.

The counting disk is a flat cylindrical box 26, the end surfaces of which serve as the upper and lower dials b and 6 (and the inner part of the box contains a mechanism for controlling the movement of the arrows. Three circles are drawn on the dial (solid lines in Fig. 1), on which sediment mc dividing logarithmic

rulers, so that one third of the slide rule is plotted on the outer circumference on a ruled scale; on the middle circle, a second third of the slide rule is plotted on a smaller scale, proportionally so that this third ruler is laid down on the length of the middle circle; and with divisions of the last third of the slide rule, putting them on the length of the inner circle. The divisions 1 are located on either side of the circles and serve: the divisions located on the inside of the circle, for multiplying and dividing numbers, and on the outer part of the circle - for raising to a power and for extracting the roots.

The scale for finding the decimal logarithms is located on three concentric dotted circles, on which the divisions are deposited by the above method, i.e. in proportion to the decrease

ftfltffl lines of circles, counting the initial length of the outer dotted circle.

The divisions to find the trigonometric values can be printed on the instrument box or on the

watch face.

For each cys), the arrows move: one 4 on the upper dial: and one, arrow:;; 4 -: - on the bottom. Arrow 4, fastened with gear 18, is driven in by gear 77, seated on an axis 2V, rotated by head 7 protruding beyond the walls of box 26, and arrow 4 coupled to gear 5, is driven in rotation by gear 77, seated on axis 27, rotated by a head 2 protruding beyond the steicus box 26. The head 3 of the device serves to connect the upper arrow with the lower arrow for joint rotation.

In the parallels of the arrow 4, a convex glass is moving and in the middle of the protruding line of sight 2S, which serves to count the divisions marked on the dials. On wheel 5 and 7S there are protruding flanges 5 (Fig. 1) with pins interlocking with teeth located along sectors of gear wheels 7 and 79, which are rotatably fixed on dials, and having a number of teeth that complete rotation of gears 5 or 18 with corresponds to Vs rotation of gear 7 or 79; At that, the numbers of full revolutions of gears 5 and 75 are counted on the numbers applied to gears 7 and 79 and appearing in windows 8. Between gears 5 and 7S, an axis 7 2 is located in the center of the dial, a little less income to the axis of rotation of gear 5 and rigidly bonded to the gear 78, carrying on itself connected to the swivel device (Fig. 3), an interlock; the arrows of the upper and lower dials for their joint rotation; for this, the axis 72 in the upper part is a square section, which is dressed: a movable disk 77, covered for increasing friction with a cloth 70 and equipped with needles interlocking with a similar su; a horse plate 70 of gear 5,

Equipped with also protruding needles. The disk 77 is pulled away from the Gear 5 by the coil spring 76. On the same axis 72, the disk 73 is mounted, moving along the axis and pressed from the gear 78 of the spiral spring ... 27 ,, .. a drive in its axial movement is limited by a fixed ring 74. Between the disks 11 and 13, there are pivoted rectangular parallelepipeds 75, 75 (Figs. 2 and 5), which on the refo, the disk 77 rises to coupling the rubbing surfaces 70, 70 on the gear 5 and on the disc 7 7, whereby the gear 5 engages with the axis 72 and, at the same time, with the gear 78 of the lower arrow.

rioBiopoT parallelepipeds - proizvodI dits with the help of the head 3, rotating the jaws 23, coupled with the gears 22, 22, turning ook 24 parallelepipeds 75 (Fig. 3). To use the device, when multiplying, put the upper arrow to the first factor, the upper and lower arrows are connected with the help of head 3, the second arrow is transferred to the second factor, and the result is read by the reticle 28 of the first arrow.

When dividing, the upper arrow is placed on the dividend, the lower is on the divisor, the arrows are joined, and the second harness is reached to one, after which the first arrow indicates the quotient.

Elevation to degree: The viewer is put on the number on the scale for multiplication. The square reads the reticle against that number.

Root extraction: back to exponentiation.

Logarithmization: the viewer is placed on the number of the first scale for clearing, and now the logarithm of the viewfinder reads the logarithm on the scale for logarithms. Addition: in the top, the arrow on the scale of logarithms is placed on the first addend, the arrows are joined, the second hand is put. on the second term, the first one reads the result.

Subtraction: the upper arrow stays on the scale of logarithms for decreasing, the second for subtracting.

the arrows are connected and the second is kept to 0. On the first arrow is the difference.

SUBJECT OF THE PATENT.

A countable logarithmic disk with a fixed dial and two movable hands, each with its own drive, and a device that interlocks the hands together for simultaneous transmission, characterized in that each of the two hands 4 and 4 discs moving one along the upper arm, each other - on the bottom 6 dial faces, forming together the end surfaces of the flat cylindrical disc box 26, driven by a mechanism consisting of protruding short-circuit boxes of the heads 26 and 7 and 2, connected respectively by vom rods 27 and 27, connecting heads with teeth 77 and 77 meshed with gears 5 and 18, which teeth are rigidly connected with arrows 4 and 4 / and pins 5 coupled with teeth 7 and 19 on one of the end surfaces, fixed pivotally on the dial 6 and 6, having such a number of teeth that the full turn of the ester 5 and 18 corresponds to

/ 3 turns of the wheel 7 c 19, in order to track the share of the turn, on wheels 7 and 79 there are numbers 1, 2, 3 falling, when turning the wheels, under the windows S cut in the dials for coupling the arrows 4 and 4 together and simultaneously turning them, a device consisting of disks 77 and 73, movably mounted on axis 12 rigidly connected with gear 18, in the upper part having a square cross-section, fitted with a ring 74 in the middle, of which disk 11 abuts against the end surface of gear 5 , the bond is forced by rubbing it with the axis 72, and is engaged with the spring 76 from the gear 5, and the disk 73 is pressed from the gear 18 by the spring 27 and is suspended in movement by the ring 74, between which disks the rotary rectangular pair-body box 75, 75 is clamped, pressing the disk 11 to the gear 5 in one position, and in a different position, allowing the disc 77 and gear 5 to disengage, for controlling the rotation of the parallelepipeds, the head 3. protruding from the box 26 is rigidly connected to the gear 23 engaged with the gear teeth 22. mounted on the rods 24, carrying a parallelepiped 75 at the ends.

The cnpopograph “Krasnbgy Petiik, Leningrad. International, 75. Fig.b Fig.V.