DE527598C - Arrangement for machine telegraph apparatus, in which when a message is transmitted to the telegraph line, the battery or double-current battery is switched on - Google Patents

Description

It is known that prior to the transmission of a message from a telegraph station to another, the connection of the double-current battery to the sending telegraph station must be done. This can be done by providing mechanical devices on the machine telegraph apparatus which automatically switch on the battery when connected to the same the transmission of the message begins.

The present invention represents a further development of the known arrangement, and although the characteristic of the invention is that the connection of the battery to the line, which at the beginning of the transmission of a character by a upon actuation the mechanical device coming into effect is effected by the key lever,

_{ao is maintained} by a second mechanical device until the transmission of the character has ended.

Enclosed Fig. 1 shows the known arrangement, while in Fig. 2 an execution

_a g approximately example of the invention is shown. In Fig. 1, A and B mark two telegraph positions. Of these, the two receiving magnets A ₁ and E ₂ , the transmitting contacts SA ₁ and sk ₂ and the two switches S ₁ and S ₂ are shown. If telegraph station A transmits a message to telegraph station B _{, switch S 1 is} thrown before the start of the transmission of the current impulses, thereby disconnecting the earth from transmitting station A and applying the double-current battery. For known reasons, double-flow operation is used for the transmission of messages in telegraph systems. Via the contact SA ₁ , positive or negative potential is then alternately applied to the telegraph line, and in this way current surges are sent over the line. The message at telegraph station B is then received by the receiving magnet E ₂ in a known manner.

The connection of the battery for the operation of telegraph sets is now described with reference to Fig. 2 for machine telegraph sets. Fig. 2 shows a beispiels- g ₀ arrangement of the invention for a Lorenz-Telegraph. In Fig. 2 only the arrangement for a telegraph apparatus is shown, so z. B. for the telegraph station ./4 according to Fig. 1. The same arrangement is then also at telegraph station B (see Fig. 1). According to Fig. 2, double-flow operation is also possible for the over-

*) The patent seeker stated as the inventor:

Max Kagelmann in Berlin-Niederschönhausen.

Claims (1)

averaging of news is brought into use. There is a switchover from Earth to battery automatically by mechanical devices attached to the teleprinter are attached and cause the automatic changeover from earth to battery immediately, when the telegraph set is used to send a message, shortly before the ίο first power surge is sent. The rail D is jointly assigned to the selector rails of the teleprinter and is rotatably mounted. In addition to the selector rails, each key lever actuates rail D. In the case of teleprinters, it is used to effect the coupling of the transmitting device with the shaft driven by a motor. When the button is pressed, the rail D is moved downwards, whereby the contact is opened and the contact d is closed. As can be seen from Fig. 2, this disconnects the earth which is connected to the line via the contact and the contacts in the idle state, and the double current battery is applied to the line via the closed contact d. By actuating the contact Sk _{1 in a} pulsed manner, positive and negative potential is alternately connected to the line for the purpose of emitting the current impulses. So that the switchover from earth to the double-current battery is independent of the length of the button press, two further contacts α and b are connected in parallel to contacts c and d , which are turned over by bracket C of the transmitter. The bracket C serves to prevent a change in the setting of the transmitting device from occurring ^{during the transmission 1 of a character.} In addition, the bracket C acts on a disc F provided with a cam. The same sits on the transmission wave of the teleprinter. At the moment when the bracket C ^{slides down from the disc / 7} by actuating the clutch, the contact b is closed and the contact is opened. The latter process is only dependent on the rotation of the transmission axis, so that the length of time the rail D is actuated for switching from earth to the double-current battery is no longer considered. If the rail D is in its rest position, the contact c is closed, but no earth can be applied to the telegraph line, since the contact α is open. Only when the character has been sent does the bracket C again assume its rest position, and the arrangement according to the invention can be used for further actuation. 5o 1 ¹ A-TIi N TANSTK U CiI: Arrangement for machine telegraph apparatus, in which when a message is transmitted to the telegraph line, the battery or double-current battery is switched on, characterized in that the connection of the battery to the line, which at the beginning of the transmission of a character by a mechanical device which comes into effect when the button lever is actuated (e.g. by a switch lever D jointly controlled by the key levers) is effected by a second mechanical device (e.g. by a switch lever C controlled by the transmitter shaft, the contacts of which are parallel to the contacts of the switch lever D ) for so long is maintained until the transmission of the character is completed. For this purpose ι sheet of drawings PRINTED IN THE