DE124731C - - Google Patents

Description

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IMPERIAL

PATENT OFFICE.

Type printing telegraphs are already known in which the setting of the type wheel takes place by alternating currents, which for example with the help of Wheatstone Encoder are generated, and the pressure by interrupting this line alternating current. In these facilities, a reciprocating armature works with one under spring action together drive mechanisms. As soon as the position of the Ankers allows it, the work under spring action is used during the Interruption of the line alternating current to bring about the imprint of a type.

The subject of the invention differs from these known devices essentially in that, since no spring drive is used, the type imprint is caused directly by the alternating current sent over the line. For this purpose the pressure electromagnet is from a lying in the relay circuits electromagnet of _(in activity. This is followed closed after cessation of the latter, the local circuit as alternating current is sent through the line pipe, is being prepared through the mediation of a particular switching device firstly a local circuit so long and The imprint is made without the need for any special mechanical aids. The local circuit is automatically interrupted after the imprint has been made and the old state is restored, so that the imprint can be made in the same way after setting a new type.

The subject of the invention is shown on the accompanying drawing, which means:

Fig. Ι an exterior view of the apparatus,

Fig. 2 shows a basic outline of the same,

Fig. 3 is a cable view of the same.

Fig. 4 shows the drive of the type disk in a diagrammatic representation,

Fig. 5 is an individual representation of the 'local circuit contact, and

Fig. 6 shows the wiring diagram, which reveals the entire power connections.

The strip α to be printed (FIG. 1) is pulled off a roller α ³ and passed over a corrugated guide roller a ¹ , against which it is pressed ^{by a forked spring α 2.} The type disk b ³ sits on the shaft b and, when it rotates in only one direction due to the alternating current sent over the line, runs past a paint brush b ² , which is balanced in weight with the aid of an adjustable weight b ^l. There is also a star wheel c ³ on the shaft b . (Fig. 4), which can be driven in a known manner from a rod c by an armature c ^{1 rotatable about axis c 2.} The rod c is connected to a sensitive armature, polarized by the magnets d (Fig. 2), which can swing back and forth between the poles of the electromagnets d ^{1 in a horizontal plane.} According to the present invention, the alternating current which excites the electromagnets d ^{l also flows simultaneously through an electromagnet e 3} (FIG. 5) and causes the armature e to be attracted for as long as the

Alternating current for setting the type disc flows through the electromagnet d ^l. The armature e is not polarized and can be pulled against a stop e ^{'by an adjustable spring e 2.} The armature e is connected to a fork-like end f of a rotatable angle lever f ² , which is covered on the outer side with insulation material. If the armature e is tightened, which takes place during the setting of the type disk b ³ , the angle lever / ² assumes such a position that the power circuit piece f ^l is indeed above the lower end of the power circuit lever g ³ , but that there is contact between f ¹ and g ³ have not yet taken place. If the alternating current ceases to flow through the electromagnets d ¹ and e ³ , the spring e ^{2 takes} effect and pulls the armature e off, but this can only be moved as far as the lower, angled arm of the electric circuit lever g ³ allows. There will then be contact between f ¹ and g 3, and the local circuit 3, ^{3 shown in} FIG. 6, which is supplied with current from the battery χ, is closed. The Theiley ¹ and g ^s assume the position shown in FIG. The current from the battery fliefst χ via line 3, terminal g ^2, g arms ^3/1, to the windings of the electromagnet / 7 x ¹ and back to the battery. The armature h is tightened, and since a pin provided on it, as shown in FIGS. 1 and 2, engages through a two-armed lever k ³ rotatable about k , the latter is rotated when the armature h descends. The lever k ³ (Fig. 1) carries the paper roll α ¹ and, as it rotates, will press the paper strip α against the type in question and print the same. At the same time, a finger k ¹ at the free end of the lever k ^s lifts a pivot / rotatable lever / ¹⁰ , the opposite end of which presses against the projection g ^{1 of} the power supply lever g ³ and thereby counteracts the action of the spring g (FIG. 5) Electric circuit between f ¹ and g ^{3 is} interrupted. As soon as the electrical circuit is interrupted, the spring e ² pulls the armature e away from the electromagnet e ³ as far as the stop e ¹ allows. The angle lever f ' ^{2 then} assumes the position shown in FIG. 6, the isolated point of which remains in contact with the power circuit lever g ^3. As a result, the local circuit remains interrupted until the armature e is attracted again.

Since the armature h also returns to its initial position when the local circuit is interrupted , the lever k ³ is also taken along and the paper strip is pressed off the type disk b ³ , which movement is used to move k ² (Fig. 1 ) the paper strip to advance the distance between two types.

Claims (2)

Patent-to sayings: 1. Type printing telegraph, in which the setting of the type wheel is carried out by line alternating currents and the printing by interrupting these alternating currents, characterized in that the type disc (b ^z ) is set in a known manner by a rapid sequence of alternating current surges with the aid of an electrical switching mechanism , the alternating current flows through a special electromagnet (e ³ ) , the armature of which is kept attracted and therefore prepares a local circuit (3), which is closed after the setting of the type disk and removal of the armature from its electromagnet (e ³ ) and then by excitation a third electromagnet (h ¹ J and the armature (h) brings about the imprint of the set type, as well as the switching of the paper strip and interruption of the local circuit without the use of mechanical equipment such as a spring housing. 2. An embodiment of the type printing telegraph protected under 1., characterized in that during the; Adjustment of the type disc (b ³ ) and the tightening of the armature (e) an angle lever (f ² ) is adjusted in such a way that its end ff ¹ ) comes to rest with its metal surface over an electric circuit lever (g ³ ) without touching the same and after interruption of the alternating current by pulling back the armature (e) with the electric circuit lever (g ³ J ) closes the local circuit (3), which is interrupted by tightening the armature (h) and adjusting the electric circuit lever (g ³ ), as a result of which the armature ( e) is withdrawn even further from its electromagnet fe ³ ) and the angle lever ff ² ) is adjusted in such a way that its end ff ¹ J comes to rest with its insulated surface against the angle lever (g ³ ) , so that the next time the armature fe ) to prepare a new electrical connection. 1 sheet of drawings.