US1913431A - Control arrangement for printing telegraph motors - Google Patents

Description

June 13, 1933. w, DAUM 1,913,431

CONTROL ARRANGEMENT FOR PRINTING TELEGRAPH MOTORS Filed July 1, 1951 QH Luv; CIRCUIT CIRCUIT 7'0 RECEIVER AND LOCAL SOURCE INVEN TOR W. 0/1 UM QAMM , A TTORNEY Patented Juana, 1933 UNITEDSTATES *mwT E w wInnnLn nAuM, or VIENNA, AUSTRIA, Assmnon. To wnsrnnn .nnnc'rnic coiurnny,

mcoarom'rnn, or new YORK, N. Y.,A}. conronnrrion or nnwvonx CONTROL ARRANGEMENT non rsmemamaaaealirammns Application flea July 1, 1931, Serial No. 548,119; andfin Austria July 1;, 19301 i For remote controlling, starting or ,1 stopping of the motors or dIlVlIlg mechaterruptions graduated as regards duration,

nlsmsof printing telegraph apparatus current impulses of another duration, intensity,

or polarity than those serving for the proper transmission of printer code impulses are. commonly used. In case ofteleprinters for closed circuit working their remote control is effected by current interruption. y

The present 1nvent1on uses two current 1nshort and long, to cause the start and stop,

relay set which comprises two relays, one of a which isa sluggish relayVR with two make contacts a, b and the other of which isa lowresistance-winding quick acting relay ER with two' break contacts .0 (Z.

respectively, of the motors by means of two relays accordingly graduated in their attracting and dropping speed.

the invention is shown in the drawing.

A single station is "shown in the drawing.

This station may be connected over the line circuit? to one or aplurality of other stations.

Theprinter motor may be started and stopped either from the local station .ora distant stationunder the control of the live current.

The system of the drawing consists of a Therelease time of relay iVR is made so I long that the longestinterruptions occurring in the teleprinter operation (a number of 1 blank signals successively) are received without the relay being released.

. The windings of both relays ER and VR areconnectedin series'with each otherand with thecontacts of the receiving magnet LR of the teleprinter or its receiving relayrespectively.

In the resting condition (after cutting in the line current) the current flows through the receiving magnet LR (or receiving relay) and relay VR 0f the additional equipment: All the relays are shown in the positions as sumed under these circumstances.

A momentary interruption of the sending circuit by means of the interrupting key UK or its corresponding key at the remote end of the hne causes the quick release relay ER to armature in attracted condition. u Thereby the circuit ifor the motor controlled relay MGR is closed overthe leftqhand contacts of relays ER and tVR. When, the. relay ER releases, 1. it shortcircuits itself through its right hand contact.

j Th6 PQ j 1ayin operating connectsthe teleprinter motor M. 1

To stop the printer motor either from the local or the remote station longer interruption of the line circuit by means of the inter- A circuit diagram of one arrangement embodying rupting key UK or a corresponding element at the distant station causes the relay VR to release. 1

The circuit of the motor or power controlling relay MCR is interrupted at the contact a. The motor controllingrelay remains interrupted at the open left hand contact of relay ER when the line circuit is again closed because contact 0 will be opened at least as 1 1 soon ascontact a is closed. The short-circuit of relay ER is prevented by the open right. hand contact (5 of ER. Consequently, after one short line interruption the motor M is started. Under these circumstances, the

occurrence of one long line interruption causes the relays VR and ER bothto remain in attracted position as shown in the drawing a and the motor M is stopped. Between the short and the long interruptions signaling may take place for any desired time.

What is claimed is: 1

1. A system comprising the drivemotor of a printing telegraph apparatus and means for starting and stopping said motorunder the control of line current comprising two relay devices, one of which is fast-acting and the other. of which is slow-acting, in combination with circuit arrangements whereby the fast-acting relay is operated to a different position by a short line impulse to start the motor and circuit arrangements whereby the slow-acting relay .is operated to a diflerent position by along line impulse to stopthe motor characterized in this, that the circuit arrangements include conductive paths whereby the slow-acting relay when operated closes a short circuit around the fast-acting relay.

2. A system according to claim 1 in which with the line open both the fast and slow-acting relay devices are unenergized, and upon closing the line, current is supplied to energize both the fast and slow-acting relay devices.

o 3. A system in accordance with claim 1 in which with the line open the fast and slowacting relays are deenergized and upon closure of the line, current is supplied to energize both the fast and the slow-acting relay devices and in which also the fast-acting relay when released by ashort line impuls short-circuits itself.

1. A system according to claim 1 wherein a circuit is provided whereby if the fast-acto ing relay is short-circuited following a shortline impulse, the slow-acting relay, when released, removes the short circuit. 7

In Witness whereof, Ihereunto subscribe my namethis thirteenth day of April, 1931;

WILHELM DAUM;

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