US1011210A - Cable-relay apparatus. - Google Patents

Description

I. KITSEE. CABLE RELAY APPARATUS. APPLIOATION FILED'DEQQ, 1908. RENEWED APR. 22, 1911.

1,01 1,210, Patented Bea 12,1911

Q wmms sss :INVEINTOR.

am BY MQKZ/ a ATTORNEY orinon .ISIDGR KIISEE, OF PHILAIDEILFHIA, PENNSYLVANIA.

CABLE-RELAY srrsns'rusj Specification of Letters Patent.

Patented Dec. 12, 1911.

1 Application filed December 4-, 1908 Serial No. 468,814. Renewed April 22, 1911. Serial No. 622,745.

To all whomi'it may concern.-

Be it known that I, IsinoR Krrssn, a citizen of the United States, residing in the cityof Philadelphia, county ofPhiladelphia, and State of Pennsylvania, have invented anew and useful Cable-Relay Apparatus, of which the following is a specification.

My invention relates to telegraphy, and

- particularly to tclegraphy over cables or long lines or circuits in which the disturbeffects to capacity are great.

in Tn the'ordinary practice of cable telegraphy dots are represented in transmission by, for example, positive impulses of current, while'the dashes are represented by negative impulses, both the positive and negative iin aulses being of relatively short and substantially equal duration. And in such practice the siphon recorder or other receiving instrument responds in one direction to the positive impulses and in another direction to the negative impulses, such deflections be ing then translated into signals or messages.

It is the object of my invention in such a common system of 'telegraphy, tov provide means at the receiving station whereby the received dots and dashes may be read from an ordinary telegraph sounder or may be recorded as ordinary dots and dashes on a Morse inlrer or recorder. To this end I employ a sounder or recorder having two windings each in a different circuit, one winding being for the purpose of reproducing or recording dots, while the other is for the purpose of reproducing or recording dashes. And in conjunction with these separated sounder or recorder windings, I employ relays controlled by the rccei ring positive and negative cable impulses, in a man.- ner hereinafter described.

For an illustration of one of the forms my invention may take, reference is to be had to the accompanying drawing, which is a diagrammatic view of receiving appagzntus.

The apparatus here shown may be at a station intermediate the ends of a cable or line or maybe a terminal receiving station.

-The cable or line is represented by L in 1 by the thread or wire 5 put in tension by the thread or wire 1... The plate or member a carries the contact 01 adapted to coiiperate with the adjustable stationary contact (-2. Threads or fibers f and g connect'from the coil Glwith diagonally opposed corners of so the plate or member a, (so that rotation of the coil C within its field in response to received current will move the contact d. In normal condition the contact d is in engagement with contact 6. And similar parts are 5 member a, the wire or fiber a, through its screw head 0.

Having one pole connected to the contact 6 is a gravity or bluestone or other batteryh having its other pole connected to c','and therefore to (Z.

(Z and e are normally in engagement with each other. In shunt with the battery it is connected the winding 2 of the relay or electromagnet It whose tongue or armature so is normally held in engagement with contact is by the spring Z. The magnet It may be a long pull magnet. -A front stop at is also provided. hen the armature or tongue is in engagement with contact is the battery n is short circuited through re-- sistance 0, such resistance being suitably suliicient to prevent the rapid deterioration of the battery 11, when contacts j and 7c are in engagement with each other. the battery at and resistance 0 is connected one winding p of the sounder or recorder D, whose armature lever g is normally retracted by the spring r.

Short circuited the contacts d and e, 9

at the left, is a gravity or bluestone or other battery 8 in shunt with which is the wind ing .t of a second relay or elcctromagnet R whose tongue or armature u is normally retracted by spring 1* against insulated step w. When the tongue it engages the contact a: the circuit of the second winding g of the sounder or recorder D i s closed through the battery positive and negative impulses traverse the windings of the coils C and U causing each to deflect, or tend to deflect, in the magnetic field as well understood in the art of siphon, recorders. tive impulse, representing, for exam;

, dot, causes a movement in such direction In the case of the cbil C a post 1 Therefore, the battery 7t 75 .is normally short circuited since the contacts In shunt to co The operation is as follows: The received 3.05

as to momentarily separate the contact d from the contact 6, these contacts being normally in engagement with each other, and this momeliary separation of d and 6' causes the electromagnet or relay R to be inoniei'itarily energized, thus causing the armature or tongue u to momentarily engage the contact an and then return to the back stop c0. This means the momentary energization. of the sounder or recorder magnet whose winding is y causes the sounder or recorder to reproduce a short click or dot. Any negative impulse traversing the coil C hasrno eil'ect upon the contacts (5 and e except to bring them slightly more firmly into engagement with each other. A positive impulse traversing the coil C has no eilect upon the contacts (I and'e except to bring them more firmly into engagement with each other. Upon the passage of a negative impulse, however,

representing a dash, the coil C deflects slightly and momentarily separates contact (Z from contact a. As a result of tliis momentary separation the relay or electroiuagnet R is momentarily energized resulting in the attraction of the armature or tongue j away from the contact against the stop m, the armature immediately returning, however, into engagement with contact la. The t me of travel of armature y' from is to m and return is considerable however, the stop mand contact I: being relatively widely separated. During this outward and return travel of the armature j the sounder or recorder magnet whose winding is y) is energized causing the armature (1 to be held attracted a length of time corresponding with the time consumed in the travel of y from is to m and return, thus producing a dash either by sound or record. By my arrangement, therefore, though the cable impulses are of opposite polarities and of relatively short duration, I am enabled to reproduce dots and dashes either by sound or record just as in the case of an ordinary Morse telegraph line.

And irrespective of whether the coils C and vC are in the same or different instruments,

they may be connected'in parallel with each other instead of in series as shown, it being only necessary that one coil shall separate its controlled contacts in response to an impulse of one polarity while the other impulse shall separate its controlled contacts in response to an impulse of'another polarity. And while I have shown the contacts normally in engagement with each other to be separated in response to an impulse, it is to be understood that they may be so arranged that in response to an impulse they are momentarily closed.

What I claim is:

1..,;,lhe combination with a line or'cable carryin g impulses of dillerent polarities and of substantially equal duration, of two windings associated with said line or cable, means responsive to a line or cable impulse of one polarity for momentarily energizing one of said windings to'produce a dot, and means responsive to a line or cable impulse of the other polarity for energizing the second winding a relatively greater period to produce a dash.

2. The combination with a line or cable carrying short impulses of different polari ties, of a relay associated with said line or cable, a local circuit controlled by said relay, and a signal translating instrument in-' cluded in said local circuit, said local circuit having its condition altered by said relay for a greater period'of time than the momentary energization of said relay, whereby a dash is produced by said signal translating instrument in response to a line or cable impulse.

, 3. The combination with a line or cable carrying impulses of different polarities and of substantially e ual duration, of a relay associated with said line or cable, a local circuit controlled by said rela nal translating instrument incliided in said local circuit, said signal translating instrument being energized for a greater period than the period of operation of said relay, whereby said signal translating instrument produces a dash in response to a line or cable impulse. l

4. The combination with a line or cable carrying impulses of diflerent polarities and of substantially equal duration, two relays associated with said line or cable, a winding controlled by each relay, one of saidwindings momentarily energized in response to a line or cable impulse to produce a dot, the other winding energized a relatively greater period in response to a line or cable impulse for producing a dash.

5. The combination with a line or cable carrying short impulses of different polarities, of contacts momentarily separated in response to an impulse of one polarity, a relay momentarily energized in response to such separation, and a winding of a signal reproducing instrumentmomentarily energized .by said relay, contacts momentarily separated in response to an impulse of the other polarity, a second relay momentarily energized in response to such separation, and 'a second winding of a signal reproducand a siging instrument energized by said relay for a relatively greater period for producing a dash.

6. The combination with a line or cable carrying short impulses of different polarities, means for momentarily energizing a a second winding of a signal reproducing instrument normally short circuited jby the relay contacts, the timefof separation of the relay contacts being relatively great.- I

7. In combination wlth a line or cable carrying short impulsesof difierent p'olarities, of a relay momentarily energized in response to an impulse of one polarity, a winding of a signal reproducing instrument:

momentarily energized by saidre-lay, means 'res onsive to an impulse of the other p0 ,larlty for momentarily energizing a second relay, the contacts of said second relay normally short circuiting a second winding of a signal reproducing instrument, the time of separation of the contacts of said second relay being relatively great.

8. The combination with a line or cable carrying short im ulses, of a relay momentarily energize in response to an impulse, an instrument winding normally short "circuited by the relay contacts, the

travel of the movableirelay contact being relatively great, whereby said instrument winding is energized during the forward and return movement of the'movable'contact of said relay. p

9. The combination with a line or cable carrying short impulses of different polarities, of a coil traversed by the line current,

contacts normally in engagement'with each'. other and momentarily separated by said 'energization of said relay.

during the forward and return movement of the movable contact of's'aid relay.

, :10. The combination with' a line or. cable carrying short impulses of diiierent polarities, of a signal'reproducing instrument hav' ing two windings, means for energizing one of said windings momentarily in response to an impulse of one polarity, and means responsive to an impulse of the other po larity for energizing the second winding a relatively greater period.

11. Means for translating relatively short positive and negative'line or cable impulses into dots and dashes comprising a signal reproducing instrument having two windings, means responsive-to an impulse of one polarity for momentarily energizing one windingto produce a dot, and means responsive to an impulse of the other polarity for energizing the second winding a relatively greater period to produce a dash.

12. The combination with a line or cable carrying short impulses of different polarities, of a signal reproducing instrument having two wlndings, the circuit of one wind ing being normally open, and means for momentarily closing said circuitin response to an impulse of one polarity, a relay mo- I .mentarilyenergized in. response to an impulse of the other polarity, a second wind ing of a signal reproducing instrument and a source of energy being normally short circuited by the relay contacts, the separation of the relay cont-acts being for a relatively great period in responseto the momentary In testimony whereof I have hereunto afiixed my signature in the'presenceof the two subscribing witnesses.-

ISIDOR KITSEE.

Witnesses A. E. STEINBOOK, ELEANOR T. MCCALL.

Images