USRE14010E - Selective signaling system - Google Patents

Description

E. R. GILL.

SELE CTIVE SIGNALING SYSTEM. APPLICATION FILED AUG.26.1912.

Reissued Nov. 16,1915, I 14,010.

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I SELECTIVE SIGNALING SYSTEM.

Specification of Reissued Letters Patent. fleissued Nov, 16, 1915, Original No. 1,020,975, 1ateg1 March 26, 1912, Serial No. 532,052. Application for reissue filed August 26,

1912. Serial No. 717,225.

To all ivhom it may concern:

,Be it known that I, EDWIN R. GILL, a citizen of the United States, residing in the is a specification.

This invention relates to signaling systerns, and more particularly to such systems as are adaptable to telephonic-train despatching circuits.

One of the objects of the present invention is to provide a convenient method of communicating the correct time simultaneously to various despatchers along a telephone train despatchin'g circuit.

Another object is to provide means whereby signals arranged in a telephonic despatching circuit may be operated in consonance with electrical impulses impressed upon a telegraph circuit from the National Observatory or other sending station, by enabling the time piece of each despatcher to be periodically standardized.

Other objects will be in part obvious and in part pointed outhereinafter.

The invention accordingly consists in the features of construction, combinations of elements and arrangement of parts, which will be exemplified in the construction here inafter described, and the scope'of the application of which will be indicated in the fol- "lowing claims.

A. system embodying my invention is disclosed and represented diagrammatically in the drawing attached hereto and forming a part of this specification.

Referring now may be said to illustrate diagrammatically the signaling apparatus, wiring and operating device in the principal train depatchers station as well as receiving stations of a tele phonic train despato ers circuit,said stations being designated, respectively A, B and O.

1 and 2 respectively, denote opposite sides of the main telephone" line, and connected in bridge thereof as'indicated at 3,} and 5 are telephones the various provided in each of the stations, said calling devices in the present instance compr sing magnetos 10, 11 and 12, each magneto being to the drawings, the view 6,7, Calling devices for" telephonesalong the line are;

- located in a normally open bridge of the telephone line, said bridges being indicated at 13, 14 and 15.

The signaling devices and other operating mechanism in each of the receiving stations being similar, but one set-thereof need be described in order, to impart a clear understanding of the present invention.

Leading from wire 1 of the telephone line is a wire 16 which connects with one terminal of the coil 17 positioned upon one leg of the magnet, the yoke of which is shown at 18 and leading from the other terminal of said coil is a wire 19. This wire leads to a terminal 20 of the selector, illustrated diagrammatically at 21. This selector which is preferably a structure such as is described in Letters Patent, No. 906,523, issued to me December 15, 1908, includes a magnet 22 and a coil 23 on said magnet, the latter being connectedwith the terminal 20. Magnet 22 is adapted to operate mechanism (not shown) which'causes a contact member 24 to engage an opposed contact member 25 and close local, circuit 26. Included in local circuit 26, in the present instance, is a battery 27 and a signal 28 which signal may take the form of an ordinary electric bell. Ooil 23 is connected .with the terminal 30 of the selector, and from this terminal leads a wire 31 to the terminal of a coil 32 positioned upon'thej other leg of the magnet 18. Fromduced current will be set up in the main line,

the effect of which will be a buzzing in the various telephone receivers along the telephone line. This buzzing, which constitutes an answer back signal, will inform the operator that the local signal operating circuit has been closed by the operation of the selector.

35 denotes a polarized armature which co-. operates with the poles 36, 37015 the magnet 18. Armature 35 is provided with a clapper 38 which'isadapted to co-act with the 4:0, 41 to sound a. signal.

ells

42 indicates arelay comprising coils 43 rand anarmature 44. The coils 43 of this relay are included in a local circuit 45 which is provided with the battery 46, and included in this local circuit is a sender key 4:7 having operating keys 48. These keys, when operated, actuate mechanism (not shown) to impress impulses of a predetermined character upon the local circuit 45, thereby operat in an upward direction as by means of the retractile spring 55 connected thereto at 56 with the fixed support 57. Contact members 58 and 60 extend through an insulating block 61 carried by the armature 54. The upper ends -of said contact members are adapted to cotiperate respectively with pposed contact members 62 and 63 which are insulated from each other as by means of the block 64. The lower ends of contact members 58 and '60 are adapted to coiiperate respectively with opposed contact members 65 and 66which are also insulated from each other as by means of the block 67 A wire 68 leads from the positive side of the battery 70 to the contact member 58 a'nd a wire 71 leads from the contact member 60 to the negative side of the battery 7 Contact members 62 and 66 are connected as by the wires 7 2 and 73, and contact members 63 and 65 are connected as by means of the wires 74 and 75. A wire 76 leads from the point of jointure of wires 74 and 75 to the side A of the telephone line and included in this wire is a retardation or choke coil 77.

78 indicates a choke coil included in a wire 80 which leads from the side 2 of the telephone line to a wire 81, the latter being connected with a terminal '82 of a switch 4 83 and a wire 84 leads fromtthe other terminal 85 of the switch to thepoint of jointure of wires 72 and 73, a condenser 85 be mg interposed between the point of jointure of wires 80 and 81 and the side 1 of. the- 56 telephone line. A wire 86 leads from the opposed contact 87 of the armature 4A of the relay 42 to a terminal 88 of the relay,

and from this terminal a wire 90 leads to the wire 84. The armature 44 of the" relay 4-2 i's connected with wire 81 as'by means of the wire 91. I v

, Having thus described this embodiment of my invention, the operation thereof may now be understood. -When the switch arm 83 is in the position shown in the drawing,

the system is put into such condition that the various polarized signals along the line 'vmay be operated. by impulses impremed upon the telephone line by the battery 55 in accordance with the operation of the relay 53. This relay, as above described, is operated by impulses impressed upon the telegraph line, the sides of which are indicated at 50 and 51. The impulses which I are sent over the telegraph line are im- 7C pressed thereon from the National Observatory at a predetermined time, the object of the invention as above stated being to enable the time pieces of the various operators along the line to be periodically standardized. i

It will be understood that during the impression of the impulses upon the telegrapl line, the armature 5% of relay 53 will oscillate between the opposed sets of contacts. Assuming the armature 5% to be in the po sition shown in the drawings, impulses will be impressed upon the telephone line from the battery 70 to actuate the polarized signals according to the following circuit: wire 5 68, contact member 58, contact member 65, wire 75," wire 76, impedance coil 77 to the side 1 of the telephone line, thence through wire 16, then through coil 17, wire 19, coil 23, wire 31, coil 32, wire 33 to the opposite side 2 of the telephone line, thence through wire 80, impedance coil 78, wire 81, switch arm 83, wire 84, wire 73, contact member 66, contact member 60 and wire 71 to the opposite side of. the battery 70. When the armature 5% is in engagement with the upper side of contact members 62 and 63, impulses are impressed upon the telephone line to actuate the polarized signals through the following circuit: wire 68, contact member 58', contact member 62,, wire 72, wire 84, switch arm 83, wire 81, impedance coil 78, wire 80 to the side 2 of the telephone line, whence they" pass in an opposite direction through the various apparatus in bridge thereof, thence they return through'side 1 and through impedance coil 77, wire 76, wire 74, contact member 63, contact member 60 and wire 71 to the negative side of the battery, Thus it will-be seen that the oscil-' latory movements of the relay 53 will close such circuits as will enable battery 70 to impress impulses alternately in opposite directions to'the telephone line, whereby the polarised armatures of the various" receiving instruments wilhbe actuated in consonancc with the impulses impressed upon the wire 76, c011 77 to' the side 11 of the telephone line, then through wire 16 to the coils of thepolarized signal apparatus'and the coil 23 of the selector as h asbeen heretofore set forth, the current returnmg by means of the wire to the opposite side 2 of the telephone line, whence it passes through wire 80, impedance coil 78, wire 81, wire 91 to the armature d4 of the relay 42, through wire 86, wire 90, wire 73, contact member 66, contact member 60 and wire 71 to the opposite side of the battery 70. It

will be understood that a similar circuit,

but in an opposite direction vvi-ll;,; be impressed upon the telephone when thirrmm' ture 51 occupies its' normal position with contact members .58 and 60 in'engagement with contact members 62 and 63. Upon the impression of impulses of a predetermined character upon the last described circuit, the local circuits- 26 in the particular station called will be closed by the engagemenaof the opposed contacts '24 a'nd1i25, through I the action of they selector, When it is desired to call the various telephones in the receiving stations or the one in the calling station, such operation may be effected 'as by means of the magnetos 10, .11 and 12 which as above described are in a normally open bridge. of i It will accordingly be seenjthat .I'have the-telephone line.

inguzlaims is intended to cover all of the generic and specific features of the invenbetween.

tion herein described and all statements of the scope of the invention, which as a matter of language, might be said to fall there- Having described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a signaling system, in combination, a telephone. line, a polarized signaling device in bridge of said line, current supplying means in said line, a telegraph line, and.

means actuated by impulses impressed upon said telegraph line for "applying saidcurrent supplying means to said telephone line so that the current will flow therethrough alternately in opposite directions.

2. In a signaling 'systennin combination, a telephone line, a polarized signaling dethence I telephone line,

'by impulses tions disposed alon vice in bridge of said line, a battery adapted to be applied to said telephone line, a telegraph line, and a current reversing relay actuatedv by impulses impressed upon the telegraph line for applying said battery to said telephone line whereby said signaling device will be actuated in consonance with ilsh'e impuls es impressed upon the telegraph 3. In a signaling system, in combination, a telephone line, a polarized. signaling device in bridge of the same, current supplying means adapted to be connected with said a telegraph line, and means actuated by impulses impressed upon the telegraph 'line for applying said current supplying means to the telephone line and for changing the polarity thereof with re spect to said line whereby said polarized signalingdevices will be operated.

4. In a signaling system, in combination,

a telephone line, a (polarized signaling desai vice in'bridge of line, a battery adapted to be applied to said line, a. telegraph line, and, a polechanging' relay actuated by impulses impressed upon the telegraph line for applying said battery to said telephone line.

5. In a signaling system,- in combination, a telephone line, a polarized signaling device in bridge of said line, a selector in said bridge, a local circuit including a battery and a signaling device adapted to be closed by said selector a battery adapted to be applied to said telephone line, a relay adapted to apply the battery to said line, a local circuit including a sender key for operating sai'd relay, a telegraphline, a relay actuated impressed upon the telegraph line for applying said battery to said line and for alternately reversing the polarity of said battery with respect to the line, and means for rendering said first mentioned relay ineffective.

6. A signaling system comprising a calling station and a plurality of receiving stations disposed along a. telephone line, a polarized signaling device in bridge of the telephone line located in each of the receiving stations, a battery adapted to be applied to the telephone line, and a telegraphically operated pole changing relay located in the calling station adapted to apply said battery to said telephone line.

7. A si'gnalingsystemcomprising a calling station and a plurality of receiving staa telephone line, a selectively operated signal in each of the receiving stations, tion for selectively calling said receiving stations, a polarized signal ineach of the a battery adapted to be receiving stations,

and a pole applied to the telephone line,

means in the calling staline whereby said polarized signaling device will be operated simultaneously and in consonance with the impulses impressed upon the telegraph line.

8. A signaling system comprising a calling station and one or more receiving sta-' tions disposed along a telephone line, a selector in each of the receiving stations connected in bridge of the telephone line, a local circuit comprising a battery and a signal adapted to be closed by each-selector, a

polarized signaling device in each of the re ceivlng devices and connected in bridge of the telephone line, a telephone in each of said stations, means in each of said stations in ano-rmally open bridge of the line for operating the calling means of the telephones in each of the other stations, means in the calling stations for operating the selector in each of the receiving stations, a battery adapted to be applied to the telephone line, a telegraph line, and a relay actuated by impulses impressed upon the telegraph line for applying said battery to said telephone line and for alternatively revers'ing the polarity thereof with respect to said line whereby the polarized signaling device in the receiving stations will'be operated simultaneously.

9. In a signaling system, in combination, a telephone line, a polarized signaling device in bridge of said line, a main telegraph line, and means including-a relay for connecting said telephone and telegraph lines,

whereby said signaling device will be operated by electrical impulses impressed upon the telegraph line.

10. In a signaling system, in combination, a telephone line, a polarized signaling device in bridge of the same, a local circuitconnected across said telephone line, current supplying means in said ,local circuit, a main telegraph line, and a relay interposed between said local circuit and said telegraph line adapted to be operated by electrical impulses impressed upon the telegraph line whereby said polarized signal will be oper-;

ated. -11. In a signaling system, in .combina tion, a telephone line, a polarized signaling device in bridge of the same, a local circuit connected across said line, current supplying means in said local circuit, a main -telegraph line, a relay interposed between said local circuit and-said telegraph line and adapted to be operated by electrical impulses impressed upon the latter, and means in said local circu it for impressing current in opposite directions therein when said re- 50 1 ay is operated,.- thereby operating said polarized signaling device.

12. In a signaling'sys'tem, in combina-g' tion, a telephone line, a polarized signaling device in bridge of the same, a local circuit, connected across said line, current supplying means in said local circuit, a main telegraph line, a relay interposed between said in opposite directions therein when said relay is operated, thereby operating said polarized signaling device, the direction in which the current is impressed on said local circuit being determined by the position of the armature of said relay relative to its contacts.

13. In a signaling system, in combination, a telephone line, a signaling device in bridge of said line, a telegraph line, a local circuit connected to opposite sides of the telephone line, a relay in said local circuit adapted to be operated by electrical impulses impressed on the'telegraph line, and means in said local circuit adapted, when said relay is operated, to actuate said signaling device in consonance with the impulses impressed on the telegraph line.

14. In a signaling system, in combination, a telephone line, a selective signaling device in bridge of said line, a secondsignaling device in said bridge, a plurality of local circuits connected to opposite sides of said teleadapted to close one of said first named local circuits whereby said selective signaling device will oe actuated, a telegraph line, a .relay in the other of said first named local circuits adapted to be operatedby' electrical impulses impressed upon the telegraphline, and means in said last mentioned circuit for impressing current thereon consonantly with the impression of impulses on the telegraph line whereby said second signaling device will be operated.

15. In a'signaliIl-g system, in combination, a' telephone line, a selective signaling apparatus in bridge of the line, a polarized signaling apparatus in saidbridge, a plurality of local circuits connected to opposite sides of the telephone line, each of said local cirpuits being provided with. a source of current supply, means for closing one of said -local circuits whereby said selective signal- :a telephone line, a selective signaling device in bridge of said line, a second signaling device insaidv bridge, a plurality of 'local circuits having a common connection pulses impressed upon the telegraph line,

56 step signal controlling device at each receivto opposite sides of said telephone line, a under the [control of each device, a second source of current supply common to said signal adapted for single stroke operation local circuits, a local circuit including a at each receivingstation associated with said source of current supply and a sender key, line circuit, means associated with said siga relay operated by impulses impressed nals wherebyleither may be operated to the upon said last named circuit adapted so close exclusion of the other and means at the cenone of said first named local circuits wheretral station for selectively impressing cutby said selective signaling device will be rent onsaid line circuit to operate either sigactuated, a telegraph line, a relay. in the nail to the exclusion of-the other. other of said first named local circuits adapted to be operated by electrical imhaving a signal sending and signal receiving stations united by a common line circuit, and means in said last mentioned circuit for a signal for each I station adapted for proimpressing current therein in opposite ditracted signaling controlled over said cirrections consonantly with the impression of cuit, a signal adapted for single stroke acimpulses on the telegraph line whereby said tion at'each station controlled over said line second signaling device will be operated. circuit, means associated with said signals 17. In a signaling system, in combination, whereby either may be operated to the exclua telephone line, selective signaling appa- Sion of the other and means at the central ratus in bridgeof the line, a polarized sigstation to control the operation of either naling apparatus in said bridge, a plurality signal. of local circuits having a common connec- 22. Inaselectivesignal system,thecombination with opposite sides of the telephone tion of a main and a plurality of substations, line, a source of current supply common to a maln line uniting said stations, a selector said local circuits, means for closingone of at each substation associated with said line, said local circuits whereby said selective siga signal adapted for protracted operation naling apparatus will be operated, impedunder the control of each selector, a second ance means in said last mentioned local signal -associated with said line at each subcircuit, a telegraph line, and means actuated sta ion adapted for Single stroke operation by impulses impressed upon the telegraph and responsive for a complete signal to imline for causing impulses to be impressed pulses of characteristic different from that alternately in opposite directions upon the for operating said selectors and means at the other of said local.circuits, whereby said Inam station for impressing on said main polarized signaling device will be operated. llne impulses for operating both signals.

Ina signaling system, the combina-' 23. A signal system comprising a signaltion of a main and a plurality of substasending station and signal receiving-stations, a main line uniting said stations, sigtions, a line circuit uniting said stations, naling means at the substations for giving telephones on said line for communication a protracted signal and a single stroke. sigbetween any one of said stations and any nal, a selector at each substation, said signalother station on said line, a step-by-step ing means being adapted to respond selecslgnaling apparatus inbridge of said line tively to any polarity to give a protracted at each receiving station having means to signal, and adapted to respond simultagive both a protracted vibratory signal and neously at all the substations to reversals of a single stroke time signal, a time circuit polarity onlyto give a single stroke signal. at the sending station and means at the 19. A system of the character described having a signal-sending and signal-receiving stations united by a line'circuit, a step-bycircu'itsaid apparatus to give a selective protracted vibratory signaling indication atone of said receiving stations, or to give single stroke time signals simultaneously at all the receiving stations corresponding to impulses in said time circuit.

ing station associated with said line circuit, a signal under the control of each device, a single stroke signal at each receiving station associated with said line circuit, means associated with said signals whereby sending station and signal-receiving staeither may be operated to the exclusion of tions, a line circuit uniting said stations, the other and means at the central station telephones on said line for communication for selectively impressing current on (said between any one of said stations and any line circuit to operate either signal to the ex- -other station, signaling apparatus includclusion of the other. A ing a step-by-step device in bridge of said 20. A system .of the character discribed line circuit at each receiving station having having a signal sending and signal receiving means to give both a protracted I vibratory stations united by a line circuit, a step bysignal and a; single stroke'time signal, a

the sending station and step signal controlling device at each receivtime circuit at station to control over ing station associated with said line circuit, a. signal adapted for protracted operation means at the sending said line circuit said 21. A system, of the character described 24. A signal system comprising a"signalapparatus to 'give a sesending station to control over said line lective protracted vibratory signaling indication or to give single stroke time signals corresponding to impulses transmitted from cuit at the sending station, means at the sending station for selectively calling over said line circuit a given station to give a protracted signal thereat and means at the sending station for controlling the'substation signaling means whereby a single stroke signal is given over said line circuit at all the substations simultaneously in synchronism with impulses in said time circuit.

26. In a signal system, the combination of a main station and a plurality of substations, a main line uniting said stations, telephones at all the stations for communication by the central station with any one of the substations, signaling apparatus on said line at each substation having means to give a selective protracted signaling indication and a single stroke time signal in response to impulses on said -ma1n line, a time circuit at the mam stat on, means at the main station for controlling over said line circuit the signaling apparatus to givea selective signal at any station and for giving a slngle stroke time signal snnul .taneously at all 'the substations and means whereby the signals may be controlled and telephone conversation had over the entire length of said main line simultaneously without interference.

In witness whereof, I hereunto subscribe my name this 8 day of August, 1912.

' EDWIN n. GILL.

\Vitnesses CIIARLEs S. Rnoans, Jr., J OHN 'W. BARNEY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents. Washington, D. C.

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