US888509A

US888509A - Cable telegraphic system.

Info

Publication number: US888509A
Application number: US34836306A
Authority: US
Inventors: Isidor Kitsee
Original assignee: Individual
Current assignee: Individual
Priority date: 1906-12-17
Filing date: 1906-12-17
Publication date: 1908-05-26
Anticipated expiration: 1925-05-26

Description

PATENTED MAY 26, 19689 I. KITSEE.

CABLE TELE naw/0 UNIT erm ne CABLE TELE GRAPHIC SYSTEM.

Specificationof Iietters Patent.

Patented May 26, 1908.

Application filed December 17, 1806. Serial No. 3%,363.

To all whom it may concern:

'Be it known that 1, lemon Kirsna, a citizen of the United States, residing inthe city and county of Philadelphia, State of Pennsylvania, have inventeda new and useful Im- 'provement in Cable Telegraphic Systems, of which the following is a specification.

My invention relates to telegraphy and more especially to'submarine or subterra nean telegraphy, known as cable telegraphy.

It is the object of my invention to employ in a cable system an extremely sensitive relay which shall control a cicuit or circuits associated with or including a second relay of esssensitiveness, the second relay serving to produce or record messages at its station as received by the extremely sensitive relay, and to repeat such messages received by the extremely sensitive relay into another line or cable. I

It is a further object of my'invention that the circuit or circuits controlled by the ex tremely 'sensitive relay shall be prevented from producing any sparking or arcing with conseqluent welding efiects at the contacts of the 're ay and that such circuit or circuits shall, with relatively slight energy, be enabl'ed to sufiiciently and positively actuate at a relayor a terminal station.

the less sensitive relay.

For an illustration of one form my invention may take reference is to be had to the accompanying drawing, which illustrates diagrammatically the telegraphic apparatus The main line or cable 1 has impressed upon it at a distant station successive electrical impulses alternating in polarity as described in prior patents granted to me, and. the transmitting" apparatus at such station. may, if desired, take" the form illustrated in Letters Patent No. 831,355 granted mconSeptember 18, 1906.

An extremely sensitive polarized relay 2 has its magnet windings connected in series with the cable 1. The relay tongue 3 en gages alternately the contact 4 and the stop 5 as the ,signal impulses 'pass over the cable 1; The relay tongue 3 andcontact 4 are included in a circuit comprisingthe conductor 6, a source of energy 7, as a battery, the very great non-inductive resistance 10 and the conductor 11. The battery 7 and resistance 10 are also in a circuit including in series with them the conductors 12 and 13, battery 8, condenser 9, and the windings of the polarized relay 14 here shown, by way of example,

of the same type as the relay 2. The relay i l is of less scnsitiveness than the relay 2, which has, for example, a resistance of ap roXimatcly five thousand ohms, while the re 14 has a resistance, for example, of one thousand ohms. The battery 7 is shown opposed to the batteryS and to be of twice the power or voltage. The tongue 15 of the relay 14 engages either of the contacts '16, or 17 ac cording to the direction of'current through the relay. The contact 16 is connected by conductor 18 with a terminal of the second cable or line 26, there being connected in se ries between such cable 26 and the earth 25 thebattery 19, the inductive resistance 20, shunted by a condenser 26, the condenser 22, and the battery 21. A conductor 123 communicates from a point between induct ance ZOand condenser 22 with the tongue 15 of the relay. I

The relay contact 17 communicatesthrough conductors 27 and. 30 with the winding 33 of an ordinary non-polarized telegraph relay in whose circuit is included the battery 32 and the conductor 31, the latter communicating by conductor 28 with the relay tongue 29 is a resistance bridged across the con ductors 30 and 31. I

34 the armature of the relay and is normallyretracted by spring .85, but when attracted leaves dontact 3'7 and engages the stop 36. Included 'in the circuit controlled by armature 34 and the contact 37 are serially connected the conductor 38, battery 39, sounder or Morse recorder magnet 40 and conductor e1. v

42 represents the normally retracted armature of the sounder or recorder.

The operation of the apparatus is as follows: The operator at a distant. station sends over the cable 1 successive impulses of practically equal duration but of opposite polaritics. A positive i'npulse coming over the cable, we will assume, will cause the tongue 3 to make engagement with the contact l, thus closing the circuit through the cjonductors 6 i and, 11 which then short circuits ithe battery 7 and resistance 10, which may be, for example, of seventy iive thousand to one hundred thousand ohms. The condenser 9 then becomes. charged by the battery 8 permitting an impulse,v say a positive one, to pass through the, relay tongue 3, contact 4, conductor 6' through conductor 12 and the winding of the less sensitive relay 14 which will cause the tongue 15 to leave contact l? and to'engage-the contact 16, thus closing the circuit, through the conductor 18and thus permitting the battery 21 tov send'fa'single impulse to the second line or cable 26through .tongue 15 and contact lfi 'of'the relay 14 the condenser'22. Now suppose a ne'gative impulse. comesover the main cable' 1, .the'

tongue 3 will bemoved, against the 'sto 5 in the relay 2 and in breaking circuit wit the contact 4 there will'be no sticking or Welding because the.;volt'age of the battery .7- acting through the'high resistance 10 cannot pro-. duce enough-current'gfor such detrimen al eflrect in a sensitive relay. Furthermore, t e

battery 7 then seems toaidor causeithe in stant and better dischargeof condenser-9, so that the tongue '15 of the polarized relay 14 will be carried back against contact 17 andxbreaks contact With 16. In breaking contact with 16 an impulse of opposite polarity is sent .over the cable or line 26 due to the kick or impulse'producedby battery 19 and inductance .20. The result is that. the eX- tremely sensitive relay 2 responds to the very weak positive and negative impulses received from the cable 1 and thereby controls the circuit of-a second-relay to send over the second cable 26 corresponding impulses both as to operate in effect like the key 7, 8, shown in' the drawing in my prior patent No.- 831,355,. And by the-use of the battery-7 and '8, condenser 9, and high resistance 10, the 'extremely sensitive relay 2 is required to han-' efficiently control the, less sensitive relay 14 which controlsgreateramounts of electrical energy in its several cdntrolled' circuits. Considering how the production oftelegraphic messages at such relay station, with the relay tongue 15 engaging contact 17 the resistance 29 is short circuited and the relay magnet 33 fully energized to, break the cir--- cuit between its armature 34 and the contact 37. Such rupture of circuit allows the armature 42 of the sounder or recorder to be pulled upwardly by spring against its back stop. When the relay tongue 15 moves over to contact 16., it breaks circuit with contact 17 thus throwing into' circuit with the relay 33 the resistance 29 which sufficiently weakens the current through the relay 33- to' cause. the spring 35 to bring the armature 34' against contact 37, thus closing the circuit of the sounder or recorder 40' and causingthe attraction of the armature 42. This motion of cuit said resistance. .dlevery slight amounts of electrical energy and is nevertheless able to positively and the armature 42 between its two stops enablesthe reading of a message by sound or the record of a message on a tapein a well known manner.

What I claimis: 1. In a telegraph system, the combination with a cable, of a relay, a second relay con-' trolled thereby and included in circuit with a condenser and a battery, and a shunt across thebreak of said first-relay including a high resistance and a battery.

" 2. In a telegraph system, the combination with a cable, of a sensitiye'relay, a relay of less sensitiveness controlled thereby and included in a circuit including a battery, a condenser, a high resistance, and a second battery of greater power than and connected in opposition to said first mentioned battery,

.said second battery and high resistance being connected across the break. of said sensitive relay.

, 3. In a telegraph system, the'co'mbination with a cable, of ase'nsitive relay, a rela of less sensitiveness controlled thereby anc included in a circuit comprising abatt'eryfa condenser, a high resistance, and a battery 1 of greater power than and connected in opposition to said first mentioned battery, a

second line or cable including in its circuit a battery, a condenser, an inductive device,

and a second battery ofgreater ower than and connected in opposition to sa1d first battery, said indu tive device and second battery beingconnected across the break of said less sensitive relay. v

4. In a telegraph system, the combination with a'- cable, of a'relay,- a second relay controlled thereb ,the winding of said second relay include in a circuit with a source of energ a condenser and a resistance, said 'main e or cable relayadapted to short on- 5. Ina'telegraph system, the combination witha cable, of arelay, a second relay having its-winding included in a circuit withop- 6. In a telegraph system, the combination with a cable, ofa relay, a second relay hav-v mg 1ts winding included in a circuit with oppositely disposed sources of energy and a condenser, and a circuit including one of said sources of energy and contacts of the main relay.

7.- In a telegraph system, the combination.

with a cable, of a relay, a second relay hav mg its winding included in a circuit with a source of energy a condenser and a resist-' "ance, said main relay adapted to short circuit said resistance, means controlled by said second relay for retransmitting the message received by said main relay, and means controlled by said second relay. for translating the message received by said main relay;

8. In a telegraph system, the combination with a cable, of a relay, a second relay heying its winding included in a circuit with a source of energy econdenser and e resistance, said main relay adapted to short circuit said resistance, and means controlled by said second relay for retrensmitting the mes sage received by said main relay.

9. In s telegraph system, the combination With a cable, of e relay, a seccndreley hav ing its winding included in e circuit with e condenser and e resistance, ecircuit includling seid resistance and the contacts oft-he.

tion with a cable, of e sensitive polarized-re 5 for translating the message ergy a condenser and a high resistance, said high resistance included in a circuit controlled by the contacts of said main relay, and means controlled bys id second relay sensitive relay. 7

n Witness whereof I hereunto efhx my signetnre in the presence of the two subscribing Witnesses.

ISIDOR KITSEE.

YVi't'nesses ALVAH RITTENHOUSE, ANNA E. STEINBOOK.

received on said