US1020975A - Selective signaling system. - Google Patents

Description

UNITED STATES Pn- TENT OFFICE;

EDWIN R. GILL, OF YONKERS, NEW YORK, ASSIGNOR, BY MESNE-LSSIGNKENTS, TO HOWARD E. MERRELL, OF NEW YORK, N. Y., AND OR-LO J. HAMLIN, F SHETHPQRT,

PENNSYLVANIA.

v Specification of Letters 1mm. Application filed December 8, 1809. Serial No. 582,082 z To all whom it may concern:

Be it known that I, EDWIN R. GILL, a citizen of the United States, residing in the city of Yonkers, county [of Westchester, and State of New York, have invented a certain new and useful Improvement in Selective Signaling Systems, of which the following is a specification.

I This invention relates to signaling sys tems, and more particularly to suchsystems 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 tele phone train despatching 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, thereby enabling the tiine piece of each. despatche-r to be periodically standardized. I

Other objects will bein part-obvious-and in part pointed out hereinafter.

The invention accordingly consists in the features of construction,combinations of elements and arrangement'of parts, which willbe exemplified in the construction herelnafter described, and the scope of the application of which will be indicated in the following claims.

In the accompanying drawings wherein: are illustrated twoforms of embodiments of.

my invention, the figure is a diagrammatic view of a preferred form themof'.

- Similar reference characters refer to simi 0 local circuit 26 may include a 0011 34 lar parts in both figures of the'drawingl.

Referring nowfto the drawings, the view may be said to illustrate diagrammatically thesignaling apparatus, wiring and operating device in the principal train despatchers station as well. as receiving stations of a telephonic train despatehers circuit, said stagitps being designated, respectively, A, B an 1and2 respectively, denote opposite sides ofthe maintelephone line, and connected in bridge thereof is'imlicated at'3, 4. and 5 are telephones 6, 7, and 8. Calling devices for the various telephones along the line. are provided in-each of the stations, said calling devices in the present instance comp-rising ing connected with the terminal 20. Magnet- SELECTIVE SIGNALING SYSTEM.

magnetos 10, 11 and 1 2, each magneto being located in a normally open bridge of the telephone line, said bridges being indicated at 13, 14 and 15. 1

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 telephore 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 otherterminal 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 be- 22 is adapted td-operate r'neclnanism not shown) which causes a contact member 24 to. engage an opposed contactlmelnber 25 and .close localcirc'uit 26. Included in local circuit 26, in the present instance, is a bat tery 27 and a signal 28 which signal may take the form of an ordinary electric bell. Coil 2 3 is connected with the terminal '30 of the selector, and from this terminal leads a wire-31 to'the terminalof a coil 32 positioned upon the other leg of the magnet 18. From the'opposite terminal of this coil-leads a wire 33 to the opposite side 2' of the telephone line. It will thus be seen that the coils 17 and 32 of the magnet'l8 as well -.as

selector 21 are connected in bridge of thetelephone line. If desired, a portion of the I positioned upon magnet 22 so that when the local circuit 26 is closed by the selector 21 an line, the eficct of which will be a buzzing in the various telephone receivers along the telephone line. This buzzing, which constitiites an answer back signal, will inform the operator that the local signal operating circuit has been closed by the operation of the selector.

induced current willbe set up in themain 35 denotes a polarized armature which co operates with the poles 36, 37 of the magnet 18. Armature 85 is provided with a cla per 38 which is adapted to co-act withithe 40, 41 to sound a signal.-

lie 1,

42 indicates a relay comprising coils 43 l ated by impulses impressed upon the teleand' an armature 44. The COllS 43 of this relay are includedin a local circuit 45 which is provided with the battery 46, and ineluded in'this local circuit is a sender key 47 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 operating the relay 42.

50 and 51 indicate the opposite sides of the telegraph line, which lead into the train despatchers station. These wires include a coil 52 of a relay having an armature Armature 54 is normally urged to movement 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 The upper ends of said contact members are adapted to cooperate respectively with opposed 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 cooperate respectively with opposed contact members 65 and- 66 which 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 and a wire 71 leads from the contact member 60 to the negative side of the battery 7 0. Contact members 62 and 66 are connected as by the wires 72 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 4 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 83 and a wire 84 leads from the other terminal 85 of the switch to the point of jointure of wire 72 and 73. a condenser 85 being interposed between the point of ointure of wires and 81 and the side 1 of the telephone tline. A wire 86 leads from the opposed contact 87 of the armature 44 ot the relay 49 to a terminal 88 of therelay. and from this terminal a wire 90 leads to the wire 84. -i.'lhe armature 44 of the relay 42 is connected with wire 81- as by means of the wire 91.

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 may be operated by impulses impressed upon thetelephone line by the battery 70 in accordance with the operation of the relay.

53. This relay, as above described, is operupper side 45 and relay 42, cause battery graph line, the sides of which are indicated at 50 and 51. The impulses which are sent over the telegraph line are impressed thereon from the National Observatory at a predetermined time, the object of the invention asabove stated being to enable the time pieces of the various operators along the line to be periodically standardized.

It will be understood that during the impression of the impulses upon the telegraph line, the armature 54 of relay 53 will oscillate between the opposed sets of contacts. Assuming the armature 54 to be in the position 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 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. \Vhen the armature 54 is in engagement with the 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 passin 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 oscillatory movements ot'the relay will close such circuits as will enable battery 70 to impress impulsesalternately in opposite directions to the telephone line, whereby the polarized armatures of the various receiving instruments will be actuated in consonance with the impulses impressed upon the telegraph line from the National Observatory.

When it is-desired to set the system for selective signaling; the switch arm 83 is moved to the position shown in dot-ted linest and. assuming the armature 54 to be in the position shown, the manipulation of any of the sender keys 48 will. through local circuitto impress impulses upon the line according, to the tollowing circuit: from battery 70 through wire 68 to contact member 58.thence through contact member 65, wire 75, wire 76, coil 77 to the side 1 of the telephone line, then through wire 16 to the coils of the polarized signal apparatus and, the coil 23 of the coil 78, wire 81, wire 91.to the armature at of the relay 42, thence'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 understoodthat a similar circuit, but in anopposltedirection will be impressed upon the telephone when the armature 54 occupiesits normal position with contacb members 58' and 60 in engagement with cbntiictmembers 62 and 63. Upon the iiiipressio'ii of impnlses of'a predetermined character upon the last described circu'it, the local circuits. 26 in the particular station called' Willi be elosetl "by the engagement of-the opposed-contacts 24 1 line, and-a pole chang'ing relay actuated by and 25, through the action of the selector.

When. it is desired to call the various tele l' phones in the receiving stations or the one in thecalling station, such operationlmay bepeffccted as by means of the magnetos 10,11

and 12 which as above described are in a normally open bridge of the'telephone line. It, will accordingly be-seen that I have provided an improved signaling systemadapted to attain among others all theends and ob eots' pointed out in an exceedingly simple yet elticient manner.

As many changes could be made in the above construction and many apparently widely dilferent embodiments of this invention could be made 'withoutvtleparting from' the scope thereof. it is intended that all matter contained in the above description or shownin the accompanying drawing shall be interpreted as illustrative and not in a limiting sense. It is also to be understood that the language used in the. following claims is intended to cover all of the generic and sixeific features of the invention herein described and all statements of the scope of the invention. which as a matter of language, inightbe said to fall therebetwcen.

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

1. In a signaling svsteuu in combination, a telephone line. a polarized signaling device in bridge of said line. current suppl ing means in said line, a telegraph line. and

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

2. In a signaling system, in combination, a telephone line. a polarized signaling device in lu'idge of said line. a battery adapt: ed to be applied to said telephone line. a telegraph line. and' a current reversing relay actuated 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 the impulses, impressed upon the telezgraphline. y

' 3. In a signaling system, in combination, a telephone line, a polarized signaling derice in bridge of the same, current supplying means adapted to be-connected with.

impulses impressed-upon the telegraph line --for applying said battery to saidtelephone line.

ln'a signaling system, in combination, I

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 op- 4 crating said relay, a telegraph line, a relay,

actuated by impulses impressedupon the telegraph line for applying said battery to polarity-of said battery with respect to the line, and means for rendering said first mentioned relay ineffective. I

6. A signaling system comprising a calling station and a plurality of receiving staltions disposed along a telephone line, a polarized signaling device inbridge of the telephone line located in each of the receiv-' ing stations, a. battery adapted to be ap- 'plied to the telephone line, and a telegraphicall y operated pole changing relay located in the-calling station adapted to apply said battery to said telephone line. 7. A signaling system comprising a calling station and a plurality of receiving stations disposed along a telephone line, a selectirely operated signal in each of the receiving stations, means in the. calling sta tion for selectively calling said receiving stations, a polarized signal in each of the re relying stations, a battery adapted to be applied to. the telephone line, and a pole changing relay adapted to be actuated by impulses impressed upon the telegraph line "for applying said battery to said telephone line whereby said polarized signaling device will be operated simultaneously and in consonancewith the impulses impressed upon the telegraph line.

100 said line and for alternately reversing the v 'i S. A signaling system comprising a calling station and one or more receiving stations disposed along a telephone line, a selector in each of the receiving stations connected in bridge of the telephone line, a lceal circuit comprising a battery and a sig' nal adapted to be closed by each selector, a polarized signaling device in each of the receiving devices and connected in bridge of the telephone line, a telephone in .each of said stations, means in each of said stations in a normally open bridge of theline 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 alternately reversing the polarthe telegraph line.

10. In a signaling system, in combination, a telephone line, a polarized signaling device in bridge of the same, a local circuit connected 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 operated.

11. In a signaling system, in combination, 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 circuit forimpressing current in opposite directions -therein when said relay is operated, thereby operating said polarized signaling device.

12-. In a signaling system, n combination,

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 meansin' said local circult for impressing current in opposite directions therein whensaid-re lay 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 toits contacts.

13. In a signaling system, in combination, a telephoneline, 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 beopepated by electrical impulses impressed on the telegraph line, and means in said .local circuit adapted, when said relay is operated, to actuate said signaling devise in consonance with the impulses impressed on the telegraph line.

14. In a signaling system, in combination, a telephone line, a selective signalin device in bridge of said line, a second signa ling device in said bridge, a plurality of local circuits connected to opposite sides of said telephone line, a common source of current supply for said local circuits, a local circuit including a source of current supply and a sender key, a relay operated by impulses impressed upon said last named local circuit adapted to close one of saidfirst named local circuits whereby said selective signaling device will be actuated, a telegraph line, a relay in the other of said first named local circuits adapted to be operated by electrical impulses impressed upon the telegraph line, 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 signaling system, in combination, a telephone line, a selective signaling apparatus in bridge of the line, a polarized signaling apparatus in said bridge, a plurality of local circuits connected to opposite sides of the telephone line, each of said local circuits being provided with a source of current supply, means for closing one of said local circuits whereby said selective signaling apparatus will-be operated, means for' closing the other of said local circuitsgand means in said last named circuit for impressing currents alternately in-opposite directions therein whereby said polarized signaling device will be operated.

16. In a signaling system in combination, I

a telephone line. a selective signaling device in bridge said hne, a second signaling derice in sai, bridge, a plurality of local circuits having a common connection to oppo- 'site sides of said telephone line, a source of;

current supply common to said local circuits,

:1 local circuit including a source of eur-.

rent supply and a sender key, a relay erated by impulses impressed upon said'last named circuit adapted to close one of said first named local circuits whereby ,said selective signaling device will be actuated, a telegraph line, a relay in the other of said first named local'circuits adapted to be operated by electrical impulses impressed upon the telegraph line, and means in said last mentioned circuit for impressing current therein in opposite directions consonantly with the impression of impulse-soon the telegraph line, whereby said second signaling device will be operated.

17 In a signaling system, in combination, a telephone line, selective signaling apparatus in bridge of-the line, a polarized signaling apparatus in said bridge a plurality of local circuits having a common connection with opposite sides of the telephone line, a source of current supply common to pedance means in said last mentioned local circuit, a telegraph line, and means actuated by impulses impressedupon. the telegraph line for causing impulses to be impressed alternately in opposite directions uponitlie other of said local circuits Whereby said polarized signaling device Will be operated. j

In testimony whereof I have hereunto aflixed my signature in the presence of two Witnesses.

. EDWIN it. GILL. Witnesses:

FRANK J. KENT, B. W. CoULnocK.

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

Washington, D. C.

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