SU21170A1 - A device for punching record cards with a summary statement - Google Patents

Description

In the proposed instrument for punching record cards, along with a summary sheet, punches are installed that are installed in the working position with the help of key levers and locking pins. Record cards to be perforated are placed on the table along with the sheet pulled under the table by moving the frame down. For pushing the paper strip after perforation, a thumbnail with a pawl, which engages with a ratchet on one of the rollers, is used to pull the paper. In order to print conditional ciphers on a tape, there is a special mechanism consisting of keys connected by levers with rods terminating in letters and signs, and coils with a crushband: passing tape under the list.

In FIG. 1 shows a longitudinal section of the middle part of the device; FIG. 2 is a side view of the device; FIG. 3 is a front view of it; FIG. 4 view it from above.

The upper part of the device comprises a punching mechanism (needles) with a number of piercers connected by pins with key levers; when, when pressing the lever d, the piercer moves down, then the locking pin b comes into its cutout; pressing, thus on the levers, set the required piercers in the working position.

those. they are connected by means of pins b to the frame g. The punching of holes in the card is carried out at once by all the installed piercers by pressing the frame key G. The cards are inserted into the moving frame W of fig. 4J ,. on which the scale with the numbers of the month is strengthened; the frame is set so that the line of this number coincides with the pointer on the piercer body, coming against the center line of the matrix. When moving down the piercers and punching holes are made simultaneously on the registration card w on a paper tape passing between the table m and the bar; the paper tape is unrolled: the drum, passes through the strip n, falls between the rubber rollers (Fig. 3), which pull the tape after punching holes in it, as well as after printing the cipher a certain distance to the left, and the tape is wrapped on another drum worn on the spindle on the left side of the device.

For printing on a paper ribbon, conventional symbols are used on a keyboard l, l, by means of which both the levers l and the printing rods 3 with the conventional signs on the upper ends, over which the printing ribbon passes (as in typewriters), are wound on coils y. Rotation

Aalic on the fourth part of the circle is made with each movement of the frame r down (i.e., with each card and tape punching) and each time you press any key l by means of a ratchet wheel, mounted on the axis of the lower roller, and two WJ dogs and,. with the dog m being connected to the frame r with the lever e, and the dog p receiving movement from the keyboard l, l with the lever n and the frame n (figure 2). Stop the rotation of the bottom roller axis. performed by four pins on a gear wheel abutting a hammer φ secured to a spring; This hammer moves away from the stop pins upward by means of a plate x fixed to either the lever n, and downward by means of the end of the dog t. The doggie is connected between itself with a light spiral spring that presses them against the ratchet. The left coil y, which is wrapped around a paper tape, is put on the spindle, receiving movement by means of a pair of gears from a gear wheel mounted on the axis of the lower roller, while the gear sitting on the spindle is connected to it by a friction spring clutch. Upper roller has axle boxes with springs, pressing it to the lower roller. One of the coils with a colorful belt receives movement by means of a ratchet wheel n from a paw connected to the pin h and the lever p.

The punches a, when installed by means of levers d in the working position, are connected to frame g by means of pins b; when frame g moves down to its limit position when it moves, lever e rests on stop screw and when the frame g is further lowered, it pushes b pins away to the left with the pin attached to it, thus releasing the punches a, previously associated with crawfish d. The liberated punches a are brought to their original position by means of levers g lifted upward by coil springs. Frame g is held in the upper position by the spring at the axis of rotation of the frame.

The axis and the arms (Fig. 1) of the printing apparatus rotate in bearings attached to the springs, which results in elasticity of printing.

The subject matter of the invention.

1. A device for punching record cards together with a summary list, characterized by the use of punches a, installed in the working position by means of keyboard levers and locking pins 6, lowered for punching cards, which are located on the table m together with the sheet o, pulled by ttod the table is moved down the frame i, and to advance the paper strip after perforation serves as a lever with a pawl that engages with a ratchet on one of the rollers to pull the paper.

2. At the device indicated in item 1, use of the mechanism for imprinting on the tape conditional ciphers consisting of keys l, l, connected by levers l with rods, ending in letters and signs, and coils y, y with colorful ribbon Drawn under the sheet, to move the sheet after printing, serves as a lever p carrying the paw, which engages with a ratchet on a roller to pull the sheet;

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