Receiver for printing telegraphs, in which a rotatable typewheel is adjusted by a mechanism comprising a number of selection parts.

Description

Avoidance of complicated mechanical movements by eliminating the receiver's required work processes in addition to printing. electrically controlled, such as The line spacing, the carriage return. The control of the circuits for the electrical mechanisms is done with the help of selectable parts. These are arranged and constructed in the same way as the selected parts. selectable parts, which determine the printing of the types regulate. . Another feature of the invention consists in the use of release magnets for establishing the rest state, the armature of which is attached to the attack one end of the selectable levers and usually keep them away from the circumference of the selector discs. To enable the use of heavy and powerful magnets for moving the selected parts, the Selective magnets are switched on in local circuits, which are completely independent of the circuits that receive the current pulses. In this case A corresponding relay is located in the line circuit, which is activated by the influence of the selection current pulse. and closes the local current circuit of the corresponding disc magnet and simultaneously a holding current circuit for itself. This results in The disc magnets are forcibly actuated, regardless of the duration or strength of the selecting current pulse. It has already been proposed. It has been suggested that polarized relays and intermediate relays should be used for this purpose. Polarized relays have the disadvantage that it is necessary to to use a special current pulse to move such polarized relays back to their normal position. This special current pulse but causes a corresponding time- loss. The drawing illustrates the invention in an exemplary embodiment, namely the electrical connections are shown schematically, and from the apparatus that aids in understanding the The invention's essential features are shown in a graphical view. The receiver is controlled using the known Baudot code by combinations of five positive or negative electrical pulses. activated. At the receiver, the incoming line current pulses travel via line L and via a polarized relay 5 to ground. Relay 5 is equipped with an armature 6, which is permanently connected to the free pole of a The relay is connected to a grounded power source 7, and when the relay is energized, it leaves its normally closed or return contact 9 and engages the normally open or front contact 8. The latter is electrically connected to the slip ring of a distributor 11, whose contact lever 12 is rotated by some suitable drive in the direction of the arrow shown. Two contact brushes are attached to the longer arm of the contact lever 12; these are insulated from the arm but conductively connected to each other. These brushes successively make contact with segments 15, 16, 17, 18 and 19, thus connecting them alternately to the slip ring 10. Similarly, the shorter arm of the lever 12 is provided with a pair of contact brushes, which successively connect a series of contact segments 22 for distributing the current pulse groups to the corresponding receivers with the inner slip ring 20, which is connected to the free pole of a single-ended grounded power source 21.During the rotation of the contact lever 12, the segments 22 are connected successively to battery 21 by the inner pair of contact brushes. In the case of relay 5 being energized / i.e., when the armature 6 touches its working contact 8, the segments 15, 16, 17, 18 and 19 are connected to battery 7 by the outer contact brushes in an analogous manner. To simplify the diagram and avoid repetition in the description, only one receiver is shown connected to the distributor. However, various other sets of devices can be connected to the distributor 11, so that a number of receivers can simultaneously receive different messages sent via the single line L. Segments 15, 16, 17, 18, and 19 are connected to transformer relays 25, 26, 27, 28, and 29 via conductors 30, 31, 32, 33, and 34. To achieve high-speed message transmission, highly sensitive transformer relays are used and, after excitation, connected to a holding circuit, thus ensuring more reliable operation of the heavy, and somewhat slower, selector solenoids. Each of the transformer relays has armatures connected to selector solenoids 35, 36, 37, 38, and 39 via lines 40, 41, 42, 43, and 44. A typewheel 45 with types arranged in two rows is mounted on a shaft 46 which is rotatable in the direction of the arrow by means of a spring. The spring 47 is held under appropriate tension by a suitable motor 48. Five superimposed selection disks 55, 56, 57, and 59 are arranged concentrically to the shaft 46, each of which is provided with a number of notches 60. Each pair of characters arranged vertically in a line corresponds to a specific notch in each of the disks. Likewise, for each operation to be performed in addition to printing the characters, such as forming word spacing, etc., a specific notch is provided. Turning the paper, etc., a further incision is provided. Each vertical row of incisions, which corresponds to a character to be printed, Corresponding to this is a rotatably mounted and spring-loaded type selection lever 65, which under certain conditions is connected to a shaft 46 attached contact arm 66 engages. Those rows of cuts which are intended for other activities of the receiver, These correspond to selector levers 200, 210, 235, 240 and 260, which control the electromagnets intended for these tasks. Selection electromagnets 35, 36» 37» 38 and 39 are each equipped with an armature 70 which carries a lever 71 which is mechanically connected with one of the selector dials 55, 56, 57, 58 or 59. If one or more of the electromagnets 35 to 39 are energized, they rotate by attraction. their The levers 71 rotate the selector discs corresponding to the magnets by means of the armature 70 by a small angle. This causes the selector discs to rotate at a At a specific point on the circumference of the discs, five incisions are made in a vertical line. brought, and the corresponding selector lever is then pushed into the formed cut line by spring force with its lower lever arm. and its upper horizontal lever arm raised into such a position, in which allows it to engage with the contact arm 66. The type wheel 45 can therefore be stopped in a position in which the desired Type can be printed on the sheet of paper, or certain electromagnetic actions can be initiated by engaging the corresponding lever. Devices were put into operation which were used to create word spacing, to move the paper sheet to the next page, to switch letters to Numbers, for returning the paper carriage or for performing other functions . are applied. The selector levers 200, 210, 235, 240 and 260 are normally used without interference with the selector discs 55 to 59. Hold. After completion of the relevant work process, the selector levers are held by means of two levers 75 and 76, which are mounted at 77 and 78 respectively. have been returned to their initial position. Leverages 75 and 76 are at their The ends are semicircular and, under the influence of springs 81 and 82, hold the horizontal arms of the selector levers in a depressed position. Position. When the two magnets 85 and 86 are excited, they attract their armatures. The levers 75 and 76, to which they are attached, oppose the force of the springs 81 and 82 respectively. As a result, the levers 75 and 76 are lifted. and thereby release selector levers 65, etc. The rotation of arm 12 of the transmission- The divider is brought into synchronicity with the transmitting apparatus by some known device, so that when the outer contact brush is with The moment the connection to segment 15 is established, the first current pulse of an incoming pulse group acts on relay 5. When the contact brush comes into contact with segment 16 during further rotation, the second current pulse will act on relay 5, and so on, until the entire Combination Transfer is. The receiver works as follows: The pulse combination to be transmitted from a remote station corresponds to the Letter D, and let it be assumed that the letter D is selected by means of a combination consisting of five electrical impulses of the following composition: Positive, Negative, Negative, Positive, Negative (-| -+—). These five current pulses travel via relay 5 to ground. Relay 5 is now polarized in such a way that its armature 6 only moves when positive currents pass through it. The current pulses are attracted and close contact 8. The first pulse is emitted the moment the outer contact brush 12 touches the Segment 15 slides. Since the first current pulse of combination D is positive, relay 5 energizes and, in conjunction with contact arm 12, closes the the following circuit: From the grounded battery 7 via armature 6, contact 8, slip ring 10, outer brushes of the arm 12, segment 15, conductor 30, Turn of the transformer relay 25, turn of the trip control relay 100, normally closed contact and armature of a reset relay 101, to earth and back to battery 7. As a result, relay 25 is energized, attracts its armature and thereby closes a circuit for the selector electromagnet. 35, namely from earth via the armature and normally closed contact of the reset relay 101, trip control relay 100, winding of the relay 25, working contact This relay, line 40, and via the selector solenoid 35 to battery 102 and ground. This circuit also forms a holding circuit for The transformer relay 25. Relay 100, because it is in series with relay 25, is energized at the same time as relay 25 and blocked in the same holding circuit. However, it does not yet exert any influence on the receiver. The excitation of the selection magnet 35 causes the attraction of the n0 associated with it. The armature 70 rotates the disc 55 by means of a lever. The state thus formed is maintained by the holding circuit described above. The second and third current pulse arrives via the line! n5 at the moment when the outer contact brush rubs against segment 16 or 17. Since these two pulses are negative, the armature 6 of relay 5 remains in its rest position. Relays 26, 27, and consequently the corresponding ones also remain in their rest positions. Electromagnets 36 and 37 remain unexcited. The associated disks 56 and 57 They therefore remain in their resting position. The fourth current pulse is again positive and excites relay 5, while the outer brush 12 binds ring io with segment i8 vei>. Relay 5 places its armature 6 at the working contact 8, thus completing a circuit from battery 7, armature 6, contact 8, slip ring 10, brush 12, segment 18, conductor 33, transformer relay 28, trip control relay 100, return contact and armature of reset relay 101 to ground and back to battery 7. Relay 28 attracts its armature and closes an excitation and holding circuit from ground, armature of relay 101, relay 100, front contact and armature of relay 28, line 43 to selector solenoid 38 to the grounded battery 103. The closure of this circuit keeps the armature 70 of the selector solenoid 38 continuously attracted, and this keeps disc 58 rotated at a small angle to its normal position. The fifth current pulse, being negative, has no effect on the receiver.The two transformer relays 25 and 28, the trip control relay 100, and the selector magnets 35 and 38 remain energized, keeping their armatures attracted, while the disks 55 and 58, in conjunction with the other three disks, in front of the selector lever 65, which is used to set the type wheel 45 to the letters, have formed a vertical cut line. After the outer brush of the contact arm 12 has slid over a segment, the inner brush will connect the distribution ring 20 with one of the segments 22. This closes a circuit from the partially grounded battery 21 via ring 20, segment 22, conductor 105, front contact and armature of the trip control relay 100, via the winding of the trip relay 106 and armature and return contact of the reset relay 101 to ground. This energizes relay 106 and attracts its armature, thereby closing a working and a holding circuit for the trip magnets 85 and 86, as follows: ground, armature of the reset relay 101, coil and working contact of the trip relay 106, conductor 107, windings of the trip magnets 85 and 86, battery 108, and ground. The excitation of the two magnets 85 and 86, acting against the springs 81 and 82, flips the release levers 79 and 80 and lifts their semicircular ends from the horizontal arms of the selection levers.The selector lever, in front of whose vertical arm the various notches have aligned exactly perpendicularly to one another, engages the line of the notch with its lower lever arm, whereby the horizontal lever arm is raised to the position ' in which it can engage with the shaft arm. The movement of the armature 76 also actuates a pair of contact springs 110, which complete a circuit for the starter control relay 113 via the following path: battery 114, relay 113, line 112, springs 110 and via 111 back to battery 114. By attracting its armature, the starter control relay forms a circuit for the starter solenoid 120 via ground, armature of the reset relay 101, armature and working contact of the starter control relay 113, winding of the starter solenoid 120, line 121 and the two springs 122, 123 to battery 124 and ground.The starting magnet, by attracting its armature, disengages a pawl 126 from the ratchet wheel 127, which is fixedly connected to the shaft 46. Under the action of the spring 47, the shaft 46 now rotates in the direction of the arrow until the arm 66 is stopped by the inner raised end of the switched selector lever 65, corresponding to the letter D, thereby holding the type wheel 45 in a position in which the letter D can be printed. The release control relay 100 prevents any actuation of the printing mechanism if only negative current pulses are sent via line L; for it is readily apparent that the current pulse via conductor 105 only occurs when the armature of the release control relay 100 is attracted, and this only happens if at least one positive current pulse is received.When arm 66 strikes lever 65, a circuit is closed from ground 130 via lever 65, arm 66, conductor 131, winding of pressure magnet 132, conductor 133, excitation winding of the spacer relay 135, conductor 136, winding of the reset relay 101, battery 137 to ground. Relays 101 and 135, as well as magnet 132, are thus energized, attract their armatures, and cause the printing, the formation of the gap between two letters, and the return of the apparatus to its normal position as follows: By pulling its armature 140, the pressure magnet 132 pushes a rod 141 against the paper, causing the letter D to be printed. The distance relay 135 energizes its two armatures 142 and 143 and closes in the following holding circuit: ground 144, holding coil, armature 142, conductor 145, springs 146, battery 147, and ground. The second armature 143 completes the excitation circuit for the distance magnet 150 via conductor 148 and battery 151. Magnet 150, by energizing its armature 152, actuates a pawl 153, which advances the gear 155 by one tooth. A drum 156 is attached to the gear 155, around which a cord 157 is wound. This cord is attached at one end to the drum and at the other end to the paper carriage 158. By means of the cord drum 156 and The carriage 158 is moved along a square guide rod 159 by means of the cord 157 wound on it, in order to print each time to bring a character back to a blank area of ​​the page in front of the printing bar 141. The one at the opposite end of the paper carriage The attached cord 160 is guided over the drum 166 and tensions the spring 165. The distance relay 135 ensures the safe operation of the The spacer magnets 150 remain attracted regardless of the length of the working pulses, by keeping their armatures 142 and 143 energized until the armature Magnet 152 separates the springs 146 by means of a pin 170. When the two springs 146 are separated, the circuit of the holding winding is interrupted. The relay 135 opens, causing the armatures 142 and 143 to drop and the mechanism for forming the type spacing to the Peace is restored, provided that the release magnets 85, 86 are de-energized again and the excitation circuit of the relay described above is complete. 135 was opened. Although printing and spacing are initiated simultaneously by excitation of the printing magnet or the Distance relay ensures the time required to complete the circuit for magnet 150, which is relatively slow action of the spacer magnet 150 printing the desired character before the formation of the space between the individual Types. By pulling in its armature, the reset relay 101 removes the earth connections from relays 100, 106, and the currently energized relay 25. up to 29, the release magnets 85 and 86, and the starter relay 120, thereby returning all these parts of the receiver to their normal position The return of levers 79 and 80 pushes down the actuated lever 65, thereby opening the contact between 65 and 66 and removing This disconnects the ground connection from the pressure magnet 132 and from the relays 135 and 101, thus de-energizing them. The reset armature 76 Furthermore, it opens contact 110 and thus the circuit of the starter control relay 113. The desired type is therefore selected and printed, a The blank space for the next character is pushed in front of the type wheel, and the receiver is prepared to receive another pulse group. prepared. To create the space between two words, a combination of impulses is sent via the line to select the specific lever 200. This lever is arranged in the same way as lever 65 and is only shown removed to illustrate the drawing. to simplify the current paths. Upon entering the cut line, it actuates a pair of springs 201 and 203 by means of a pin made of Insulating material, but otherwise works in the same way as lever 65. Assuming the desired pulse combination has been delivered, and The formation of a cut line in front of lever 200 would have occurred through a corresponding displacement of disks 55 to 59. It will now proceed according to Upon delivery of the pulse combination, a single current pulse is sent via line 105. This current flow energizes relay 106, which in turn... Excitation of magnets 85 and 86 causes all selector levers arranged around the WIIe4O to be released, as described above in the type selection. described. The lever 200 falls into the formed cut line under the action of a spring, and the contact springs 201 and 203 come into contact with each other. in contact. They thereby complete an electrical circuit from earth, via springs 201 and 203, conductor 133, excitation winding of the distance relay 135, Conductor 136, reset relay ipi and battery 137 to ground. Both relays 135 and 101 are energized. The reset relay opens the holding circuit of the Trigger relay 106, the actuated transformer relays and the release magnets, as in the type selection. Pressing down levers 79 and 80 after The re-excitation of magnets 85 and 86 returns lever 200 to its original position, thus completing the circuit through springs 201 and 203. The excitation winding 135 and the relay 101 reopen. The armatures 142 and 143 each have a holding circuit for the distance relay as well as An excitation circuit for the spacer magnet 150 is closed, and after the distance has been established, the effective parts return. their initial position, as described above. Lifting lever 80 at the moment of release closes the springs 110 and thus the previously described circuit for the starter control relay 113. This completes the excitation circuit of the starter solenoid 120. Considering that the relay receives current almost simultaneously with relay 113, and that the starter solenoid 120 operates relatively more slowly, the latter does not receive enough current to actuate the pawl, and the shaft therefore remains locked during the formation of the gap. On the typewheel 45, the various characters are arranged in two rows, the upper of which is normally located directly opposite the pushrod 141. If a character 115 from the lower row is to be printed, a combination of pulses suitable for selecting the selector lever 210 is sent via line L, similar to the process used for forming the gaps.In every respect, this lever is identical to the one whose mode of operation has already been described. Lever 200 serves to close and open the two contact springs 211. This is achieved by the lever 210 engaging the previously formed The cut line closes the springs 211, thus completing the following circuit: Earth battery 137, reset relay 101, conductor 212 Springs are connected to conductor 213, changeover solenoid 214, conductor 215, contact springs 216 and 217, and earth. Relay 101 and solenoid 214 are energized, thereby The former returns the selection and release components in an analogous manner as described above, the latter "attaches its anchor 220." This anchor is rotatably mounted at 221 and carries a roller 222 on its rear extension, which is normally held in place by a spring 223 in the lower Position is maintained. As soon as the armature 220 is pulled, the roller 222, counteracting the force of the spring 223, switches the type wheel 45. um,.so that the lower row of types is adjusted opposite the rod 141. Furthermore, an insulated pin 225 is attached to the anchor 222. which, when the armature is actuated, brings the two springs 226 together. As soon as they close contact, the following holding circuit is activated for the Switching magnets formed: Grounded battery 227, conductor 228, springs 226; switching magnet 214, conductor 215, springs 216 and 217 to ground. Once the type wheel has been switched to this raised position, it remains in that position until it is switched back by a mechanism that will be described later. is returned to the normal position. As in the case of #-' of gap formation, relay &Idigr;01 is activated first here as well, so that the The starting magnet is not working, therefore shaft 46 cannot rotate. The circuit of the reset relay is also activated here by the return of the; Release lever interrupted. -The type wheel is returned to its normal position by a special combination of 'electrical impulses' to select the reverse lever 235. The selection and arrangement of the aforementioned lever is the same as that of the levers 200 and 210 marked above. Spring 217 is in In its resting state, the spring 216 is connected to the ground and forms part of the circuit for the switching magnet 214. However, if the return lever 235 Once selected and flipped, spring # opens the contact with spring 216 and comes into contact with spring 237. By opening the Contact 216-217 interrupts the holding current circuit of the switching magnet 214 55 so that it releases its armature 220 and the type wheel allows it to return to its normal position. The closing of contact 2i7-237 completes a circuit from ground via battery 137. Reset relay ↑↑↑, conductors 212 and 60 238, springs 237 and 217 to earth. The reset relay thus energized now performs the selection and The release devices, as in the above case, return to their normal position, thereby preventing, as previously explained, the rotation of shaft 46. The return of the release lever then opens the excitation current circuit of the reset relay. To initiate the return of the paper carriage, a return lever 240 is actuated by a special combination of electrical impulses. selected and actuated. Lever 240 is connected to a spring 241 and, under certain conditions, brings this into contact with spring 242. As soon as lever 240 falls into the formed cut line, a circuit is closed, which runs as follows: Grounded battery 137, Reset relay 101, conductor 243, springs 241 and 242, conductor 244 and return magnet 245 to ground. Relay 101 and magnet 245 are energized. the former returns the selection and release mechanisms to their normal position, while the latter tightens its anchor 246. Anchor 246 carries a pawl 247, which is normally engaged with the teeth of the wheel 155. The release of this pawl releases the tension of the Spring 165 comes into effect, thereby returning the paper carriage 158 to its initial position. ■ The armature 246 is further equipped with a Pin 250 is provided for actuating the springs 251. The contact of the two springs 251 ensures the continuous excitation of the magnet. 245 and the continuous disengagement of the pawl 247 with the gear 155 until the paper carriage has fully returned by The following holding circuit: earth, battery 227, conductor 252, contact springs 253 and 254, conductor 255, springs 251, magnet 245 and to earth. If- When the paper carriage reaches the end of its path, an insulated pin 256 attached to the wheel 155 will open the springs 253 and 254, thus interrupt the holding circuit of the return magnet 245. Magnet 245 will then release its armature, and the springs 251 will open. whereupon all "relevant devices" are returned to their rest position. In this case too, the type wheel is... the paper carriage is prevented from rotating, and relay 101 is again activated by the return of the release lever 79 or 80. Power is cut off. To establish the line spacing, or in other words, to advance the paper, a line feed lever 260 must be used. The contact spring 123 is appropriately connected to the lever 260 and is actuated by the spring when the lever is pressed. lifted and brought into contact with 261. Opening contact 122-123 prevents the rotation of shaft 46, and closing of the springs 123 and 261 of the line-

Claims

The switching magnet 265 is energized via the following circuit: earth, battery 124, spring pair 123-261, conductor 266, magnet 265 and earth. The line-switching magnet then attracts its armature 267, which, via a pawl 268 attached to it, moves a gear 269. The gear 269 is on the The square rod 159 is mounted and serves to rotate the paper carrier. It is insulated by an anchor 267. When the anchor is attracted, the two springs 271 are closed by the attached pin 270, thus closing the following circuit: earth, battery 137, Reset relay 101, conductors 212, 272 and 273, springs 271 and back to ground. Relay 101 pulls in its armature and thus initiates the selection and The trigger mechanisms return to their rest position, while when the trigger levers are released, the reset relay is de-energized again. The receiver described above is influenced exclusively by positive current pulses. The occurring negative current pulses They do not affect the recipient; however, the negative impulses serve to... To control the operating processes of the system in which the receiver is used. For example, the distributors are controlled by changing the polarity. The signal streams are kept in synchronization by generating a spatial pulse for synchronization through the pole reversal, provided that The distributors are not in synchronization. However, this synchronization system is not the subject of the present invention and is therefore not intended to be used. This will not be explained further. Patent claims: i. Receiver for printing telegraphs, in which a rotatable typewheel is driven by a mechanism comprising a number of selection parts is set up, which are brought into different positions by electrical impulses and together control the operation of a specific one of several allow selectable parts, characterized in that the selectable parts are in the form of rotatable discs provided with edge incisions. are designed with a central opening through which the shaft carrying the type wheel passes, and that the selectable parts are rotatable levers are designed, one end of which falls into a specific groove formed by the incisions of the selection discs when selecting, while the other end becomes a stop for the typewheel shaft, and the typewheel, rotated, is in the correct position. continues.

2. Printing telegraph receiver according to claim i, characterized in that the selectable parts consist of angled levers arranged on a common axis of rotation bent in a circle with the typewheel shaft as its center, and one arm of these levers extends over the edges of all selection discs, while the other is directed towards the typewheel shaft.

3. Printing telegraph receiver according to claim 3 and 2, in which the selectable levers are pressed by springs towards the circumference of the selector discs, characterized by one or more magnets serving to trigger the setting after completion of the selected operation, the armatures of which usually press down the ends of the selectable levers that converge on the typewheel shaft, so that the other ends of these levers are out of contact with the selector discs.

4. Printing telegraph receiver according to claim i, in which each selector part is brought into position by an electromagnet associated with it and controlled by selector relays, characterized in that each of these electromagnets is connected to an independent local circuit which is only closed when the corresponding selector relay is energized, and that holding circuits for these relays are simultaneously closed by the selector relays in the operating position.

5. Printing telegraph receiver according to claim i, characterized in that, in addition to the levers used for selecting letters, further levers are arranged which can also be selected by the discs, and that these levers close electrical circuits in the working position which control the other operations of the receiver that are necessary besides printing a type, e.g. the line spacing, the return of the carriage, etc. This includes one sheet of drawings.