US820977A - Electric telegraphy. - Google Patents

Description

PATENTED MAY 22, 1906.

I. KITSEE. ELBGTRIG TELBGRAPHY.

APPLIUAT-ION FILED JUNE 10, 1005.

UNITED STATES PATENT OFFICE.

iSlDOR KITSEE, OF PilILA.DELPHiA, PENNSYLVANIA.

ELEGTFHC TELEGHAPHY- To will whom 112$ may concern.-

Be it known th at I, Isroon Krrsuu, ol the city and county of Philadelphia and State of Pennsylvania, have invented certain new and useful Iin rovcments in Electric Eulogy raphy, of whic 1 the following is a specific tion.

My invention relates to on improvement in telegraphy, and has more special reference to the receiving of telegraphic intelligence on submarine or long-(listen ce lines,

In Letters Patent No. 777,259, dated Do camber 13, 1904, I have described a method of telegraphing over submarine or long-distance lines with. the aid of true reversals.

This my invention has special reference to the receiving of such true reversals even over long-distance submarine; and it is the objecf; of my invention to receive such true revorsels over iong-distence cables in a manner so that the same may be recorded in accordance with the Morse method of recording or maybe re layed to a. second cable or to landlines.

In the accompanying drawing, which is a diagrammatic View showing the devices em played, I have shown a oiarized relay as the receiving device and a li 'orse embosser as the recording device; but: it is obvious that instead of the Morse enibosser other instruments may be substituted.

In this figure, A is a. polarized relay sensitive enough for tliepurposc required. I may use the well-known Siemcns polarized relay,

' which is preferabl wound so as to have a resistance of about our thousand ohms; and in I this drawing I have illustrated parts of this relay, so as to enable persons versed in the art to use the some in accordance with my in- V volition, and I have designated the polarized crmature as C, the lawo electromagnetic as B and B and the two contactointis as I) and D The binding-posts for te two coils are I deal ated as 4 and 6, and the binding-post for t e connection to the armature as 5. So far the arrangement of the relay is substantially the usual one, and as the Siemcns polax-iced reley is well known it is unnecessary for me to go more into the detail of the construction and arrangement of same.

As is usual, the binding-post 6 is connected with the line and the bindmg-post 4 with the ground Z I have not illustrated the different devices to be placed, specially in submarine tclegraphy, in the lizie or between the ground and the relay, as such devices do not orm part of my invention.

Specification of Letters Patent,

Applimiion iilmi Jme 10 190k Patented May 22, 1906.

Serial No 254,65 7.

insisted of the usual courses-Lionel the binding-posts D" and 13, each to aiseparate circuit, .l hove connected both of these bindingposts to on additional bindingpost, (desi noted as 3.) These binding-posts D and 5* care therefore always in electrical connection with each other and with the binding-post 3.

1 is a source of current forming a circuit embracing the electromagnet F, the resistonce F, and the switch The electrorne not F is )I'OVidQCl with t e armature G, he (1 upward y the spring 9. g and g are two adjustable contacts in proximity to this armature. The resistance F has to be of a.

value high enough to prevent the curreut of' the source 1 from energizing the magnet F. N ormally, tlierefore'lia,t is when the switch f is closedtl1e energizing efl'ect of 1 will not he sufiicient to draw the armature G toward the stop 9, and this armature will always remain in contact with g, and to actuate this armature it, is necessary to either decrease or shunt the resistance F placed in its circuit,

and for the purpose of makin active this ar-.

mature through the relay A, have'recourse -to the followin arrangement:

I. connect t e contact 3 'thr0ugh wire 7, with the leg '9 of the circult just, described, and I connect the bindin%-post or contact 5, through wire 8, with the cg 10 of the circuit just described. When, therefore, the armature C, in electrical contact with point 5,

touches one or the other of the contacts D and D in electrical connection with point 3, the e circuit is established shunting the resislance F, and as the resistance value of the shunt is far less than the resistance value of F and as the current from 1 is suficient to energize the electromagnet F, provided'no other resistance is present in the circuit, it; is obvious that as soon as the shunt is establlsliciifllfi current-flow from 1 will energize the eiectrornagnet F to a dc rec so as to pull the anneeuregG" downwar and in contact with the ad'ustaole point g. In the drawing I lnivei ustratc iii-second local circuit as to embrace the source of current 2', the annuncioting device H, the electromagnet I adapted to be used as e sounderor relay, an the recording device K. I have also illustrated this CHLUll us to contain the switches f and f 3 for the reason as will hereinafter be described. The arrangement of the relay A is such that the tongue or armature 0 always rests against one or the other of the contacts D or D. It is supposed that the polarity of the coils is such that the negative impulse will send the armature C toward and,in contact With D and that the positive impulse will send the armature C toward and. in rontact with D and it is supposed that the last impulse transmitted was a negative one and that therefore, as is illustrated in the drawing, the armature rests at D. If new the operator wishes to transmit true reversals, he actuates his transmitting means in a manner so that positive or ne ative impulsesgvill be sent over the line. lt ach impulse will actu-- ate the relay in a manner so that the armature will move from one contact to the other. Durin this period-tl1at is, during the time that t e armature moves from one contact to the second contact-the shunt around the resistance F will be open, and the armature G" will be drawn toward and in Contact with the polnt 9, thereby closing an'clectric cir euit, including the necessary translating de- .vices,,such as for distance, as are illustrated in the drawin In Letters atent above referred to I have described a system whereb one character of the Morse alphabet-say t 1e dot-is characterized by one impulse, the polarity not coming into consideration, and the second character,s aythe dash1s characterized by two im ulses in quick succession, these two inipu ses of opposite polarity to each other.

The translating device in the circuit containing the source 2 will therefore be actu ated in accordancenvith the difference of time lapsing between the different impulses. It is supposed that the operator wants to transmit a dot. I-Ie presses thetransmittingkey once, and the translating device in the circuitcontaining the source 2 will answer to this one impulse during the time that the armature C travels from one contact to the other. Should the operator now desire to transmit a dash, he presses the key twice in quick succession, which results in transmitting two impulses in quick succession, the armaturewil therefore travel from one con tactto the other and then from the second contactback to the first. This will release theshunt around F twice in quick succession and the translating device in the circuit will answer twice in quick succession, and the receiving operator being aware that two impulses in uick succession symbolize a dash will be a'b e to translate the message, provided the same consists of dots and dashes symbolized as aforesaid. It will therefore be" seen that in contradistinction to the relaying arrangement as employed to day I do not actuate the translatin device throu h the making of the contacmbut I actuate t e translating device through the breaking of the contact of the receiving device. I

- I have not placed the necessary translat ing device in the first local circuit for the reason that a sensitive device such as has to be employed on long lines or cables cannot well be made to change the resistance of the vi!- cuit sufficiently if such circuit contains high electrrmiotive force, which is necessary for the actuating of translating devices, and I therefore have substituted the intermediate circuit containing the source 1, and in prac tice use in this intermediate circuit one dry cell, a relay of twenty-five ohms, and a resistance of about fifty ohms, the relay answering satisfactorily when the resistance was shunted, but remaining unaffected as long as the shunt was broken. i

I have stated above that the Siemcns relay substantially as is made to-day-may be em loyed; but in the actual em )loyment I had recourse to some changes -w eh I have found to be advantageous 1' but as these changes will form the subject-matter of another application it is unnecessary to give the same in detail here.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is.

1. In tele raphy, a line of transmission, a polarized re ay connected to said line of transmission, contacts for said olarized relay, said contacts in electrical connection with each other and with one terminal of a local circuit, the other terminal connected to the armature of said relay, a local circuit con- 'taining translating devices,-,a source of current and a resistance, said resistance adapted to be shunted'through the contacting of said armature with one or the other of said contacts.

2. In telegraphy, in combination with a line of transmission, a receivin device consisting of a polarized relay provi ed with contacts, aclosed local circuit embracinga source of current, an electroma net and a resistance of a value great enoug to normally make said lectromagnet inoperative; a shunt around said resistance, one terminal of said shunt in electrical contact with .the movable part of said relay and the second of said terminals in electrical connection with the contact of said relay, and means at said relay to shunt through said movable part said resist ance, therebyniaking operative said 'electro magnet.

3. In telegraphy, a receiving device comprising a polarized relay connected to the inc and round respectively, a normally closed local circuit comprising an electromagnet, a source of current, and a resistance, 1n combination with a shunt around said resist- \ance and means at said relay to open and close said shunt.

4. In tele raphy, a closed local circuit, a translating evice connected in said circuit but nonoperative by the normal current strength therein, a non-inductive resistance also connected in said local circuit, a main line, and a receiving instrument connected to be operated by current in said main line to shunt said resistance for the operation of said translating device.

5. A telegraph line having a main-line relay connected therein, a closed local circuit, a non-inductive resistance included in said. lo-

- cal circuit, seid resistance being controlled by said reiey, and e translating device operated by current 1n Sflld closed CHCHlt.

6. A telegraph-line having a. menvhno relay connected therein to be operated by current, passing over said line, a non-inductive resistance cenneeted in series with the tongue and forward contact of said relay, a. closed i circuit, and a translating device connected to be operated by current in said closed circuit. In testimony whereof I hereby sign my name in the presence of two subscribing witnesses, this 8th day of June, A. D. 1905.

A ISIDOR KITSEE, Witnesses:

EDITH P. STILLEY, H. C. YETTER.

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