US800158A - Telegraphy. - Google Patents

Description

PATENTED SEPT. 26, 1905.

IE". W. JONES. TELEGRAPHY'.

APPLIOAUIION FILED APR.27, 1905" X 7% /NVEA/TOR IBYQATTOH. Q

PATENT OFFICE.

FRANCIS W. JONES, on NEW YORK, N. Y.

TELEGRAPHY.

Specification of Letters Patent.

Patented Sept. 26, 1905.

Application filed April 27, 1905. Serial No. 257,674.

The object of my invention is to provide means for repeating from a Morse circuit into the alternating-current-clrcult side, and vice versa, of a telegraph-line equipped with means for signaling by varying a continuous current and simultaneously signaling by varying groups of short and rapidly-recurring alternating-current impulses.

I'provide an automatlc electromagnetictransmitting device and a polarized receivingrelay for the alternating-current circuit and an automatic transmitter with a suitable relay for the Morse circuit, and I cause the relay of one circuit to control the transmitter in the other circuit by means of a separate local circuit in each case. The transmitter in the simple Morse circuit is provided with an extra contact which operates in advance of the contact in the main circuit. This contact is in a local circuit controlling an electromagnet, which in turn controls the break-points of the relay, the coils of which are in the simple Morse circuit.

The accompanying drawing illustrates my invention.

' m is a main telegraph-line having three stations (1, b, and 0. At each station there is a Morse key 22 and a neutral relay 21. At each station the Morse instruments are bridged by a branch circuit containing a condenser is, and suitable generators 19 and 20 are located at opposite terminals of the line m with cooper-e ating polarities to line. Each generator is bridged by a branch circuit containing a condenser la. Station a is also located on a second circuit m, which extends to a distant station (1. The line m is equipped with means for Morse signaling, as described, and for simultaneously signaling by dividing rapidlyalternating impulses into groups. The appa ratus for this purpose at stations at and 0 are substantial duplicates.

' g is an alternating-current generator developing four hundred alternations per second.

, It is in a local circuit with one coil 51 of a transformer, the other coil 52 of which is in I the main line m.

r is the receiving-relay, preferably of the polarized form, having a retracting-spring 54:. The coils of relay 1" are in the separate branch circuit 55 in series with the condenser 53 and the break-point 56 of an electromagnetic transmitter t, the other break-point 57 of which is in circuit with the generator 9. When transmitter t is operated, the circuit of the relay 1' is opened when the circuit of the generator 9 is closed, and vice versa. The closing of the contact at 57 renders the alternating impulses of 9 effective in the line on through the transformer 51 52.

At station a and station 0? on the line 00 are sets of Morse apparatus consisting of the relay 21 and key 22. In the circuitw at station a is a relay R in series with the break-points 60 of an electromagnetic transmitter. This transmitter has a magnet 62 in a local circuit 63, with a repeating-point 64 of the relay 0". The break-points of relay R are in a local circuit 72, which includes the magnet 71 of the transmitter t. I provide a magnet 80, which operates on the armature-lever of the relay R to control the break-points 70. This magnet is in a local circuit 90, having two branches 91 and 92. The branch 91 is permanently closed. The branch 92 includes the break-points 61, controlled by the transmitter-magnet 62, which in turn is controlled by the relay 1".

The operation of the apparatus may be described as follows: Stations 64, b, and 0 may exchange signals by the simple Morse code varying continuous-current impulses, each impulse being coterminous with an elemental signal. Stations a and 0 may exchange signals by varying the lengths of groups of alternating impulses, all in a manner Well understood. Stations 0 and cl may exchange signals, the first-named employing the alternating-current circuit including part of the line we and station d employing the line or circuit as, the operation being accomplished through the repeating apparatus at the station a. When station coperates the relay r at station a, the circuit 63 is made and broken at the points 64:. The magnet 62 responds, making and break ing circuit 00 at the point 60. Preceding the break, however, there is a break at the point 61, and the balance due to the two diflerential coil-windings inthecircuits 91' and 92 is broken, the circuit 91 being effective to magnetize the difierential magnet and control the circuit of the generator 0 at point 51, so

that the action of the key at 22 breaking the normally closed circuit in closes the normally open circuitthat is, the alternating-current circuit of the line at. The relay 1' at station 0 responds, and signals are interchangeably transmitted. By means of the apparatus described I am enabled to relay or repeat from the normally open alternating-current circuit of the line on into the normally closed circuit of the line in, and vice versa.

What I claim, and desire to secure by Letters Patent, is

1. The combination of a telegraph-circuit, means for exchanging signals between separated points by varying a continuous current and means for simultaneously exchanging signals between separated points by varying groups of alternating-current impulses, said means including a.source of alternating-current impulses with an electromagnetic transmitting device and a receiving instrument or relay inductively connected with said main line; a second telegraph-circuit connecting separated points or stations having means for signaling by varying a continuous current, including a relay and an electromagnetic circuit-breaker in said circuit, a local circuit including the break-points of the relay of the first circuit and the magnet of the transmitter in the second circuit and a local circuit including the break-points of the relay in the second circuit and the magnet of the transmitter in the a1ternating-current circuit, and a holding-magnet acting on the armature of the receiving instrument in the second circuit, a local circuit therefor, and break-points in said circuit controlled by the relay in the first circuit.

2. The combination of two telegraph-circuits, means for exchanging signals by varying a continuous current and means for simultaneously exchanging signals by varying groups of alternating-current impulses in the first circuit and means for exchanging signals by varying a continuous current in said second circuit, said means in each case, including an electromagnetic transmitting device and a relay, a local circuitincluding the break-points of the relay of the alternating-current circuit and the transmitter-magnet of the second circuit, and a local circuit including the breakpoints of the relay of the second circuit and the transmitter-magnetof the alternating-current circuit, a holding-magnet for the armature-lever of the relay in the second circuit, a local circuit therefor, and break-points in said circuit controlled by the alternating-current relay.

3. The combination of two tclegra ih-circuits, means for exchanging signals by varying a continuous current and means for simultaneously exchanging signals by varying groups of alternating-currcnt impulses in (he first circuit and means for exchangingsignals by varying a continuous current in said second circuit, said means, in each case, including an electromagnetic transmitting device and a. relay, alocal circuit including the breakmints of the relay of the altermlting-current circuit and the transmittcr-magnet of the second circuit and a local circuit including the breakpoints of the relay of the second circuit and the transmitter-magnet of thealternating-current circuit, and a magnet controlling the break-points ot' the relay in the second circuit, a local circuit therefor, and break-points in said circuit controlled by thealternating-current relay.

4. The combination of two telegraph-circuits, means for exchanging signals by varying a continuous current and means for simultaneously exchanging signals by varying groups of alternating-eurrent impulses in the first circuit and means for exchangingsignals by varying a continuous current in said second circuit, said means, in each case, including an electromagnetic transmitting device and a relay, a local circuit including the break-points of the relay of the alternatiilgcurrent circuit and the transmitter-magnetof the second circuit and a local circuit inchiding the breakpoints of the relay of the second circuit and the transmitter-magnet of the alternating-cur rent circuit, and a magnet controlling the break-points of the relay in the second circuit, a local circuit therefor and break-points in said circuit controlled by the transmitier-magnet of the second circuit.

5. The combination of two telegraph-circuits, means for exchanging signals by varying a continuous current and means for simultaneously exchanging signals by varying groups of alternating-current impulses in the first circuit and means for exchanging signals by varying a continuous current in said second circuit, said means in each case, including an electromagnetic transmitting device and a relay, a local circuit including the break-points of the relay of the alternating-current circuit and the transmitter-magnet of the second circuit and a local circuit including the breakpoints of the relay of the second circuit and the transmitter-magnet of the alternating-current circuit, and a magnet controlling the break-points of the relay in the second circuit, a local circuit having two ln'anches, one of which is normally closed and the second of which includes break-points of the transmitter controlled by the relay in the alternating-current circuit.

6. The combination of two telegraph-circuits, one of which is equipped with means for signaling by continuous-current impulses and simultaneously with alternating-current 1mpulses,the circuit of the latter being normally open, a second telegraph-line equipped with means for signaling by continuous-current impulses and means whereby signals in the normally open alternating-current circuit are relayed or repeated into the normally closed continuous-current circuit, and means whereby signals received on the'normally closed continuous-current circuit are relayed or repeated into the normally open alternating-current circuit.

7. The combination at one station of two telegraph-lines, a normally open alternatingcurrent circuit on one line, a normally closed continuous-current circuit on the other line and means. for repeating from one circuit to the other consisting of a relay and an electromagnetic transmitter for each circuit, a local circuit including the back contact-stops of the closed-circuit relay and the magnet of the open-circuit transmitter, a second local circuit including the front contact-stops of the opencircuit relay and the magnet of the closedcircuit transmitter with a magnet controlling the break-points of the closed-circuit relay, a local circuit including the coils of said magnet and break-points operated by the relay of the open circuit.

FRANCIS W. JONES.

Witnesses:

THEODORE L. OUYLER, Jr., HARRY R. MONAHAN.

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