DE655203C - Transmitting and receiving system for the transmission of current surge combinations - Google Patents

Description

The present invention has a transmission system as an object, which preferably intended to serve in training as a pressure telegraph device for sending characters is, but also for the remote control of machines, z. B. line printing machines and tabulating machines are used can.

The new transmission system belongs to that class of transmission systems in which pulse series of varying predetermined strength, which are transmitted by the receiving device evaluated or translated according to a pulse combination key, so that uniform control effects, z. B. in printing telegraphs in the usual way character printing come about.

In the embodiment of the invention as a pressure telegraph, the transmission pulses generated by pressing the keys of a typewriter, taking each letter one or more impulses corresponding to different characters of different Strength and polarity can be. To evaluate or translate the pulse combination to bring about, a galvanometer relay and a stepping relay are in the transmission line at the receiving station provided, the galvanometer relay in different ways on the sent Impulse responds depending on their strength and polarity, while the stepping relay only the number of pulses is taken into account, regardless of their strength and polarity.

Due to the interaction of the two relays, the receiving station always the registration circuit which corresponds to the character sent is activated; and in connection with the character registration there is also an automatic one every time Repatriation of the organs that have become effective.

The invention is based on the accompanying drawings in an exemplary embodiment illustrated.

Fig. Ι shows in section and partial side view part of a power-driven Typewriter, which with an embodiment of the new impulse transmitter Is provided.

Fig. Ι a shows the associated with the surge transmitter Parts in operative position.

Fig. 2 shows a preferred transmission key for letters and other characters.

Fig. 3 is a circuit diagram of a portion of the transmission system with switching relays.

Fig. 4 shows the complete circuit diagram for sending characters according to the in Fig. 2 key shown.

655200

Figure 5 is a schematic diagram of the power connections for the transmitting device.

6 and 6 a are individual representations of the group selector relay used in the transmitter system.

To facilitate understanding of? individual devices belonging to the transmitter system the overall effect of the ίο transmission system should first be briefly explained.

The effect of the new transmitter is based on the use of a key for the characters to be sent, consequently the selection of characters from the use of different Current values depends, the fluctuations in the current values from the depend on the particular nature of the system and, for example, in the sense of in Fig. 2 key shown can be as follows: current intensity ι = 5 milliamperes, Amperage 2 = 10 milliamps, Amperage 3 = 15 milliamps, Amperage 4 = 20 milliamps.

The key for the various characters to be sent also contains certain information about the polarity of the current transmission, this being positive for individual characters and negative for others. In addition, the key shows a difference in the number of power surges for the various characters, which can be long or short, as will be explained in more detail below. It may be emphasized here is [that the key can be set up for that here in question 'mende transmission system for sending grain-any number of characters. For this reason, the application of the transmission system is not limited to the purposes of printing telegraphy, but also allows various machines to be controlled remotely, such as B. number printing machines, tabulating machines, etc.

Power surges according to the. provided herein key ^r w ground by actuation of a suitably arranged typewriter emitted when the corresponding characters to be sent button of the machine is pressed. The keystroke causes a lever linkage to release a cam associated with the key, which then, under the influence of a power-driven roller, causes the associated type lever to strike, as will be explained in more detail later.
The released by the lever linkage of the button for the drive cam 11 (Fig. 1) also causes the actuation of a lever 107 or 108, each of which swings out a lever 12 via a further lever connection with rod parts 10 and 110, which then has a projection 13 of a Releases pawl 18, which is seated on a transmission disk 14 which is rotatably arranged on a driven shaft 15. The disk 14 is provided with several contact pieces 16, ejfhe when the disk is coupled to the sensing brushes 17, one after the other, so that a number of current impulses characteristic of this disk is emitted with each revolution of a disk 14. It should be mentioned that each key has a cam 11 and a lever linkage for releasing the pawl 18 of a disk 14 by a lever 12 assigned to it, and that the brushes 17 are supplied with selected current values which are supplied by. these get into the line system, as can be seen from the circuit diagram of FIG. Of the contact pieces 16 provided on the disks 14, one has a greater length than the others, as can also be seen from FIG. 1. The purpose of the greater length of the one contact piece 16 will be specified in more detail later. When a lever 12 releases the extension 13 of the pawl 18 assigned to it, the pawl 18 is brought into engagement with the toothing of a clutch wheel 20 fixed on the driven shaft 15 by a spring 19 acting on it, so that the disc 14 is coupled to the shaft 15 for one revolution. The disk 14 accordingly sends three short and one long current pulses through the line system when the lever 12 assigned to it is actuated. If, for example, the key corresponding to the letter S is pressed, then this keystroke according to the key in FIG. 2 would result in the emission of four current pulses of current value 1 with positive polarity.

According to FIG. 3, a galvanometer relay 21 is in the transmission line at the receiving station of the type known as D'Arsonval switched on and a relay 22, the latter being responsive to power surges in any direction. The galvanometer relay 21 has eight contacts 23 which can be ground over by an armature 24, with the contact 23, against which the armature 24 rests in individual cases, depends on the current strength and the polarity of the impulse-excited coil 25 of the relay depends. The relay 21 is set so that it only applies to the strength and polarity of the current surges, but not to the Number of power surges responds. Short power surges that are sent through the line and get to the coil 25, are unable to bring about a movement of the armature 24, so that this is able to adjust to that contact 23, which the one which corresponds to four current values, with

to whom the surge is sent. If, on the other hand, the coil 25 is excited by a long-lasting current impulse, which is the last current impulse that is emitted during the rotation __ 5 of a transmission disk 14, then this can cause a rotation of the armature 24, through which it comes into contact with the latter Contact 23 arrives, which corresponds to the current value and the polarity of the current pulse emitted. The relay 21 is therefore sufficiently energized when and only when the long-lasting current surge is sent out to result in the armature 24 being set to a specific contact 23. The relay 22, on the other hand, closes its contact 26 with every current surge going through the relay winding, regardless of whether it is short or long, with the effect that the following circuit is closed: positive battery, wires 27, 28, 29, contact 26, wire 30, Solenoid coil 3i, contact 33 °, wire 34, negative pole of the battery. Each time the solenoid coil 31 is energized, the arm 33 of a relay, generally designated by the reference numeral 32, is stepped forward and is placed in sequence on the contacts 36 No. 1 _r to 4 according to the number of through the. Winding 31 current surges. Depending on the number of these current surges, whether short or long, the arm 33 comes into contact with one or the other of the contacts 36 No. 1 to 4, so that a current path is selected. The contact arm 33 remains in its setting position imparted to it by successive current surges until the winding 38 corresponding to its setting position comes into effect and the transmission process for a character is completed. When the transmission of a character is completed, the relays 39 and 40 are energized via the contact 47 ^C , which results in the contact arm 33 being returned to its basic position. The excitation of the relay 39 causes namely the attraction of the i \ nker 41, whereby the pawl end 42 of the armature comes out of engagement with the ratchet wheel 37 so that the ratchet wheel with the arm 33 can return to its basic position. Simultaneously with the relay 39, the relay 40 is energized, whereby the contact 33 ″ is opened so that no reverse currents can flow through the contacts 36 while the contact arm 33 is returned to the basic position.

It was mentioned earlier that the last rush of electricity for each signal transmission is a long one Current surge is or that, if the character is represented by a single current surge is, this surge is a long surge, so that the contact arm 33 with each transmission comes into contact with a contact piece 36 and accordingly the galvanometer relay able to bring the relay coil 38 corresponding to the sent character into effect.

When the coil 25 of the relay 21 is excited by a long current surge, the armature 24 adjusts itself to a specific contact 23 depending on the strength and polarity of the current surge, as has already been explained. When the armature 24 is in contact with a contact 23, current can flow from the positive battery terminal via the wires 27, 28 and the armature 24 and the contact 23 in contact with this to the relay 43, which is connected to the negative terminal . The relay 43 is thus excited, which then closes its contact 44, whereby the following circuit is created: positive pole, wires ij and 45, contact 44, relay 46, negative pole. The contacts 47 are arranged so that when the relay 46 is energized, the contacts 47 ", 47 *, 47 ^C and 47 ^ close immediately, while the contact 47" closes a certain time interval later, which interval corresponds to that time is required to excite the coils 38 for a registration process when the go contacts 47 ^a , 47 ^, 47 ^C and 47 ^{d are} closed. The contact 47 ^e thus closes when the energized coil 38 causes the registration of a character. This contact closure creates circuits through which the relays 39 and 40 are excited, the current taking the following path: wires 27, 48, contact 47 ^, wire 49 and then on the one hand wire 51, relay 39 and wire 34 to the negative pole and on the other hand, also subsequent to the wire 49, wire 50, relay 40, wire 34. the closure of the contact 47 ^e has thus the return of the contact arm 33 in its basic position result. .

The flow diagram of FIG. 4 is complete for the transmission of the one shown in FIG. 2 Characters corresponding to the key contained in this figure. Nobody needs the same Explanation in detail because it is factual with the explained current diagram of FIG matches.

When sending a special character, e.g. B. the character S, the play Operations in the following manner. As can be seen from the transmission key in FIG. 2, the sending of the letter S requires the sending of four electric pulses, one of which three is short and one is long and their current value = ι and their polarity is positive. That Hitting the letter key S causes the associated transmission disk 14 to be released

for the duration of one revolution, whereby the transmission of the required current surges takes place under the influence of the device shown in FIGS. The relay 22 is energized four times and accordingly closes its contact 26 just as often, so that the switching relay 32 also performs four switching steps and brings its contact arm 33 to contact 36 No. 4 for adjustment. The first three current surges are here of short duration and are accordingly unable to excite the galvanometer relay in such a way that the armature 24 is adjusted. The last current surge of longer duration, however, causes the armature 24 to be set to the contact piece 23 no. According to the setting of the armature 24 on the contact 23 No. 1, the relay 43 is energized and closes its contact 44, whereby the relay 46 is energized, which then first closes ^{the contacts 47 ″, 47 *, 47 C} and 47 ^d. The contact arm 33 of the relay 32 was, as mentioned, set to the contact 36 No. 4. When the contacts 47 ″ to 47 ^{d are closed} , a circuit is created which contains the coil 38, which corresponds to the letter S, so that this coil is excited and the letter S is registered. Immediately thereafter, the contact 47 ^e as explained earlier, closed, whereby the two relays 39 and 40 are activated, so that the readiness position for a new transmission of characters is established Current impulse corresponding time interval takes place.

In, Fig. 6 and 6 a, a preferred embodiment of the relay 46 is illustrated. Thereafter, the same has a solenoid 54 which is attached to a plate 52 which is seated on side plates 53, which carry ^{contacts 47 °, 47 *, 47 ° C} , 47 ^{° and 47 e isolated from the side plates.} The core 55 of the solenoid 54 is articulated to an arm 56. This arm is rotatably mounted on a holder 57 which is carried by the solenoid 54 and is able to rest against insulating pieces of the contact springs 58 and 59. When the arm 56 is rotated about its pivot pin 61 when the solenoid coil 54 is excited by the pulling in of its core 55, the contacts 47 ', 47 ^ft , 47 ^C and 47 ^{d are} closed and subsequently also the contact 47 ^e . " It can be seen that the time difference between the closure of the contact 47 ^ and that of the other contacts 47 can be influenced by spatial adjustment of the springs belonging to the contact 47 ".

The device of the relay 32, the contact arm 33 of which is successively placed on the contacts 36 No. 1 to 4 by emitted current pulses, can be seen from FIG. The contact arm 33 of this relay is attached to a ratchet wheel 37 which is rotatably seated on a shaft 62. The core 63 of the solenoid 31 is connected to a link 64, which is connected at one end in an articulated manner to a switching arm 35 for the switching wheel 37. This switch arm is provided with a protruding shoulder 65, the tip of which is usually out of engagement with the teeth of the gear 37, but is displaced to the right when the solenoid 31 is excited in the sense of FIG. 3, so that the switching arm 35 with the tooth attachment 65 is brought into tooth engagement with the gear wheel 37 by the spring 66 and, under the influence of the shift to the right, the gear wheel rotates the width of a tooth gap, the contact arm 33 first from its basic position to contact piece 36 No. 1 and then at iol ~ lowing excitations of 31 gradually reaches the following contact pieces 36. The 9.0 armature holds the ratchet wheel 37 and through this also the contact arm 33 in every position given to it. The excitation of the magnet 39 and the attraction of the armature 41 caused thereby causes the end 42 of the armature 41, which acts as a pawl for the wheel 37, to disengage from the toothing of 2) 7, so that the spring 67 acting on the contact arm 33 then moves the arm able to return to its basic position.

In the embodiment of the invention shown in the drawings, the surge transmitter consists of a power-driven typewriter which does not belong in the essence of the invention under consideration here, the type levers 73 of which are mounted on a beam 72 attached to the frame 71 , namely the type levers 73 on a wire 74 postponed. Each type lever 73 is connected by a linkage to a lever 76 carrying a button no 75, which in turn sits on a rod 77. Everyone. Key lever 76 is provided with a downwardly directed extension against a continuously rotating roller 79, namely one part of the lever 76 with an extension 78 and the other with an extension 80. The ends 78 and 80 are fork-shaped or slotted at their ends and take a pin 81 or 82 in their fork opening or in their slot, which is seated on an angle lever 83 or 84. the

Angle levers 83, 84 are rotatable at 85 and 86 on further angle levers 87 and 88, respectively stored. The angle levers 87 and 88, in turn, are rotatably supported at 89 and 90, respectively carry rotatable cams 91 and 92 at their lower ends.

Each angle lever 83 is provided at its lower end with an extension 93, which is usually in the position shown in FIG. 1, in which it is against one of two pins 94 seated on cam 91 so that rotation of the cam under the influence of the roller 79 cannot take place. When a lever 76 is rotated by pressing its button 75, z. B. a lever carrying an approach 78, then the angle lever 83 which is in engagement with the projection 78 is opposite to the direction of rotation rotated clockwise so that the projection 93 releases the pin 94 of the cam 91. The cam 91, which is in contact with the roller 79, which is continuously in the The clockwise direction of rotation rotates in the opposite direction, is then carried out by the roller 79 rotated by half a turn. During the time it takes for the cam to turn halfway make, the approach 93 of the bell crank has returned to its original position, if the button was released immediately, and then catches the other pin 94 of the cam, so that the cam is stopped. In the practical execution of the machine will in connection with the actuation of the key, a further stop in the path of movement each time the pin 94 of the cam 91 is indented so that the cam continues with button is stopped after half a turn. This facility is in the interests of simplifying the Drawing, especially since it does not belong to the essence of the invention, not shown. the Rotation of the cam 91 causes an oscillating movement of the angle lever 87 in the Direction of rotation of the clockwise, this angle lever pointing downwards Train on the handlebar 95 exerts, which a further lever 96 connected to it Rotary movement in the direction of rotation of the clockwise issued. When the lever 96 rotates in the Is rotated clockwise, then he exerts a pull on a handlebar 97, which is on a Arm of an angle lever 98 attacks, which in turn with the tail end of the type hoist 73 is connected and causes the drive of the type lever as it moves. The movement of the bell crank 98 becomes partial monitored by a handlebar 99, on the one hand with the angle lever 98 and on the other hand is articulated to the frame 71. A coil spring 100th which with one end engages the angle lever 98, searches for the parts in the one shown in FIG Attributed to location.

The key lever sets 80 operate in a manner similar to that described for the lugs 78 became. These approaches cause them to move downward as a result of keystrokes a release of a pin 102 on the cam 92 by moving a lug 101. That has a stop of a type lever 73 through an angle lever 88 and one with this connected link 103 result in the same way as it was already for the case the actuation of the handlebar 95 during the downward movement of a lug 78 is described became.

With the frame 71 is a frame part 104 connected, in which shafts 105, 106 mounted are carrying rotatable arms 107 and 108, respectively. At one end of each ·. Poor 107 there is a roller 109 and at the end of each arm 108 there is a roller in. The others Ends of the arms 107, 108 are connected to links no and 10, respectively. That from handlebar 107 distal end of the handlebar 110 is connected to the lever 12, which with his free end behind the projection 13 of the pawl 18 seated on the transmission disk 14 engages and thereby preventing the disk from rotating as discussed above. A pawl 112 is located at 114 on the lever 12 rotatably mounted, which is under the influence of a spring 113 which it in the direction of rotation of the Seeks to turn clockwise and thereby a rotation of the transmission disk 14 counter to the Prevents the direction of rotation of the clockwise and thus causes the disk 14 to be locked. The brushes 17 are mounted in a suitable manner on an insulating block 115, the is attached to the frame part 104. The power for driving the shaft 15 is on this Wave transmitted by a wheel 116, which with the continuously rotating roller 79 in Transmission connection is.

When a key lever 76 is depressed and the release of the cam 91 as well brings about the stop of the assigned type lever 73, then the cam 91 lies down against the roller 109 of the arm 107, so that this arm rotates against the direction of rotation executes and moves the handlebar 110 to the right, so that the lever 12 also is rotated counterclockwise about its axis 117 and the approach 13 of the pawl 18 releases. The latch 18 is then by the spring 19 with its tooth in engagement with the fixed on the shaft 15 seated clutch wheel 20 brought so that the transmission disc 14 for the duration of a Revolution takes part in the rotation of the clutch disc 20. After the lever 12

is brought out of engagement with the projection 13, the arm 107 returns to its in Fig. Ι shown basic position back, so that the lever 12 by the handlebar 110 is returned to its basic position and accordingly the approach 13 again catches when the transmission disc 14 has made one revolution. When that happens . if the pawl 18 is disengaged again from the toothing of the clutch disc 20, so that the disc 14 comes to a standstill.

The key operated printing devices can be used on both the transmitter and the Receiving station be equipped with the transmitting device, which has been described above, so that both stations are able to both send and receive. Since the same printing device both can be used for sending as well as receiving, the preferred way of actuating the button lever on the Receiving station in connection with the already described, with the transmitting device equipped printing device are explained. If the printing device has both is to be used for sending as well as receiving, a switch must be in the circuit the brush 17 should be provided so that the transmission line can be opened when reception should take place while it closes when it is about to send. Such a Switch is indicated in FIG. 5.

According to the illustration in FIG. 1, the frame 71 is another frame part 118 connected, on which an insulating strip 119 sits on which the solenoids 38 are attached. The core 121 of each solenoid is with connected to a handlebar 122 which is rotatably seated on a pin 123 which is on the solenoid 38 is arranged. A rod 124 is connected to the other end of the handlebar 122, which leads to one of the key levers 76 and is attached to it so that when the Solenoids 38 and thereby caused the core 121 to be drawn in by the handlebar 122 the key lever is pulled downwards. The downward movement of the key lever causes a stop of the type lever 73 connected to it, as explained earlier became. If only character transmission is required from a station, then is to equip the printing device with a transmitting device only at this station, while at the receiving station only solenoids to drive the button levers are to be provided are.

Claims (4)

Claims: ' 1. Transmitting and receiving system for transmission of current impulse combinations, which are based on number, current direction and Current strength of different individual pulses exist, characterized in that according to the start-stop principle working receiver evaluates the number of individual pulses by a stepping mechanism (with magnet 31) and according to the direction of current and Amperage through a second switching mechanism (21) takes place, this being different covers large switching paths in one direction or the other and thereby in a system of recording elements (with magnets 38) a group and within them a specific group ■ Selects element. 2. Installation according to claim 1, characterized in that the selection function the receiving device by the last pulse of a transmitted pulse combination is controlled. 3. Appendix after. Claim 1 and 2, characterized characterized in that the rear derailleur responsive to strength and polarity is formed by a polarized relay (21), which when energized a group of control circuits corresponding to the transmission pulse strength and polarity (with coils 38), of which only one is effective, which is determined by the number of pulses, which belong to the transmitted pulse series. 4. Plant according to one or more of claims 1 to 3, characterized by a device (with electromagnets 39, 40 and. ^{Exciter contact 47 e} ) for the automatic de-excitation of a selected current path corresponding to a sent pulse combination (with coil 38) after the latter takes effect . For this purpose 2 sheets of drawings