DE597675C - Multi-color printing device for punch card tabulating machines - Google Patents

Description

Multi-color printing device for punch card tabulating machines The invention refers to the installation of punch card tables: elliers and calculators; for printing in different colors.

The facilities previously used for multi-color printing were either only of number plate perforations on the cards or only of facilities for monitors the total pressure. In the first case they were due to the different 'colors the items depending on their importance, whether it is z. B. to credit or debit items acted, distinguished; in the second case, the sums were compared to the items highlighted by their different color.

Now, apart from both options of printing on the same machine even more options for color printing; to be able to take advantage of a multi-color printing device on punched card tabulating machines, in which the device is monitored for the color change of license plate perforations of the cards, according to the invention the switching device for the color change, optionally also from the tabulation and the reset shaft can be monitored.

In this way, items and totals can be sorted according to their importance as required can be printed in different colors, or the items can be in one color and the sums can be printed in the other color and vice versa, or it can Items and totals can be optionally printed in only one of two colors. on in this way, the application possibilities of the multicolor printing device becomes considerable : extended.

The drawings illustrate an embodiment of the invention Contraption.

Fig. I shows a schematic circuit diagram, Fig. 2 the switching device for the ribbon and Fig. 3 is the side view of Fig. 2.

It denotes a, the ribbon, b the switching lever, which can be mounted on the pivot points e, and d the ribbon guide on the levers. For multi-color printing, the ink ribbon a is brought into different positions by automatically switching a direct or alternating current flowing through the electromagnets on or off. A trigger spring f expediently pulls the lever b and thus the ribbon a out of the switching position when the magnetic circuit or is opened. Cessation of any other impulse effect to return to the starting position. In order to avoid the so-called sticking of the armature g of the lever b to the magnet coil due to the effect of the remanent magnetism, the magnet cores of the coils are each provided with a non-magnetic metal pin e '. The stroke of the armature and thus of the ribbon can be adjusted through slots h in the: Brackets i for the magnet.

The overall circuit diagram (Fig. I) is for an electrical tabulator set up and can of course for the color change process adapted to the changed switching circuits of the machine.

Arbeitssw-eis.e i. Multi-color printing depending on number plate holes on the cards.

i denotes that of the sensing brushes which - the card column in which the license plate perforation is made. A punch hole selector with adjustable contact 4 is connected to the brush i by a switching cord 3. When a punched position corresponding to the setting of the punched position selector the gap under the brush i passes through, so when the contact closes through the card hole the current via a relay 5 and the resistor 6 routed to contact 7. The relay 5 closes directly or indirectly the contact S, whereby the relay circuit is maintained. when the switch 2 is closed. At the same time, a circuit via resistor 9, the solenoid coils e and contact 7 closed and thereby switched the ribbon. The ribbon is held in the new position until contact 7 is not caused by the movement of the drawn tabulation is separated. If the identification hole is missing in the card, so the change of the ribbon does not take place.

2. Multi-color printing independent of the punched holes in the cards.

a) Hand switch OK closed for making contact as a function of the tabulating wave.

The circuit is closed via contact i i, switch io, resistor 9, solenoids, for switching the ribbon a and contact 7. This is each tabulated item is written in a different color than the total to be printed at the end, at. the pressure of which the switching device is not actuated.

b) Hand switch i2 closed for making contact as a function of the \ Tullstellwelle.

The circuit will. closed via contact 13, manual switch 12, Resistor 9, solenoid e for switching the ribbon a and via contact 7th

This means that the total is printed in a different color than the tabulated ones Post; When these are printed, the ribbon does not switch.

c) Hand switches io and 12 closed. The circuit is at the control and total pressure closed. All items and sums in the switched, but written in the same color.

In order to prevent sparks when the circuits are opened on the To avoid contact points, capacitors 14 are connected in parallel to the contacts. At 15, an overcurrent protection of the circuits is provided.

Claims (5)

PATENT CLAIMS: i. Multi-color printing device on punched card tabulating machines, in the case of the device for changing the color of the number plate holes in the cards is monitored, characterized in that the device for changing colors can optionally also be monitored from the tabulating and zeroing shaft. 2. Apparatus according to claim i, characterized in that the tabulating shaft or the zeroing shaft a contact (i i or 13) in a circuit with each revolution closes, which is connected to the control device for the color change can be connected. 3. Apparatus according to claim i and 2, characterized in that from the sensing and selector contact for the license plate holes the card monitored circuit by closing a switch (2) optionally with the control device for the color change can be connected. 4 .. device according to claims i to 3, characterized in that the ink carrier has a lever device is placed under the action of electromagnets. 5. Apparatus according to claim i to 4, characterized in that the color manual switch magnet on in slots attached brackets is arranged, which seuies by moving a setting Allow distance from the switching lever and thus the stroke of the ribbon.