USRE9764E - Signments - Google Patents

Description

2 SIieets-Sheet 1. I

v. G. w. OOY, Aaslgnor, by mesne assignments, to THE Unmm Bums TELEPHONE MANUFACTURING COMPANY.

Switch forz-Telephone Exchanges. No. 9,764.

Reissued' .l'une 14,1

I h I Q ZSheets-Bheet 2. -G. W. GOY,

Assignor, by means assignments, to THEUNITED Sums TELEPHONE Mmumcwumm 0011mm.

7 Switch for- Telephone Exchanges. No. 9,764- Rei'ssue dlune 14, 188i.

7H5 NORRIS PETERS can, uusnmcrou, u. c

1 UN TED- ATE v PA NT SIGNMENTS, TO THE UXITED STAflES TELEPHGNE COMPANY, ounnw roams. Y.

MANUFACTURING I sw' rci-r FOR Tau-zsnows-Extremes;

SPECIFICATION forming part Of Beissued Patent N0. 9,764, dated June 14,1881.

Original No. 224,653, dated February 11', Application for reissue tiled March I, 1981. I

- same, and which said drawings constitute-part of this specification, and represent, in- V Figure 1, a front view; Fig. 2, a sectional end view; Figs. 3, 4, 5, and 6, detached'views; Fig. 7, the telephone as fitted for use; Fig. 8,

13a rear view.

This invention relates to an improvemeutin 1 electric switches designed with special refer ence to communication by telephone where several instruments are arranged upon the same circuit or several circuits centering at a single point, the object being to receive a call from one instrument at the central office for communication with a second instrument, andso as to call that instrument, and then put the z 5 two in communication; and the invention consists in the construction, as hereinafter de' scribed, and particularly recited in the claims.

' A represents the switch board, on which are keys 1, 2, 3, and so on, more or less, ac-

0 cording to the number of circuits or lines,

Uorrespondin g to each line are the switchspindles a. b 0, each. terminating in a convenientlyshaped knob in front. The two spindles b and c are each ,rovided with an insulator, d, over 5 a part of t ieir length, for the purpose hereinafter described; At the inner or rear end of the spindles there are arranged three levers,

e, f, and B. The one" e is hung iutermediately betweenjhe two spindles'a b, and so that each 40 of the said spindles will be in line with the respective arms of the said lever e.

lever, f, is hung at apoint'intermediate between the two spindles b c, and so that the said spindles will be in line with the corresponding end of the said lever f. The lever B is hung centrally between the two spindles a. c,

. so that one of its arms-will ride upon the lower arm. of the lever e and its other arm upon the The other .upper armofthe lever f, as seen in Fig. 4. In

this condition the spindle cstands at its ex-" go treme inward position and the spindles b a at their outward position, and which is the normal condition-of the spindles. New, ifspindle b be pushed in, it will force the spindle 0 out; or if the spindle a be pushed in, it will,

through the lever B, force the spindle 0 outward. Either one of the three spindles being in, pushing in either of the other twowill force that one out-that is to say, only one of the spindles can be-inits inward position at the samcitimer. Above thesespindles are one or morebars, O D E," each provided with aspindle,"h, for each circuit, or corresponding to the respective series of spindles a b 0. 'Below and on theboard, in line with each'series of'spirn dies ab 0, is a metallic plate, F, with a coupling, projecting from it toward each spindle h, as seen in Fig. '5, and the inner ends of the spindle h areconstructed so th at when forced inward they will make aconnection with the 7o couplingflts seen in Fig. 5, but when drawn out are free and away from the coupling. This coupling lis made of elastic metal, and the end of the spindle conical-shaped, as shown,

so as to be forced between t-hecud of the coupling, but may be otherwise formed.

A coiled spring, 2,'serve s to force and hold the spindle or connecting-piece in a) disconnected posit-ion and prevents accidental contact. When the spiudleor connecting-piece 8o is forced inward toward the spring its end, by reason of its beveled or conical shape, maybe made to bear with considerable force against the spring, and will at the same time make frictional contact, thus insuring good connection.

Th'eline-wire n comes to the board and comes directly into connection with the key of that line shown as 1, Fig. '2. From the button under the key a wire, 12, runs to the battery, and go from the bridge at runs a second wire, *1, ton metallic plate,s, and on this rests an elastic metallic plate or jaw, t, which extends through the board, and on the hack a wire, it, runs from the jaw t to a point, in, where branches 5 b and cdead respectively, to make connection telephone, and is enabled with this single tele phone to communicate through circuits to which he may apply it.

The upper spindles, o, are all infthe battery with either of the spindles b 0. These connec- Zions b c are made fromstripsof metalturnedjj nward against the respective spindles, asseemm Fig; 6'. In the opposite side of the spindles b 0 similar strips, 1) 0*, lead outward. From the one 1) runs the grouuthwi-re g, and from the other, 0', the battery-wire 13.. From the. point "It" awire, f,"mns into connection with the metallic plate F, on which are tlie coup-' lin s l, to make connection with the spindle h an their respective bars.

It will be obscrved.that from the bridge through the plate a: and jaw t to-the point to the circuitis substantially thesan e as if the. wire ran direct without the interposition of the plate sandjaw t. v I

The position of the-strips bund Ii relative to the spindles h and c is vsuch that when the spindle is out the 'ends of those strips restupon theinsulator d, but when the spindle I) is in then they come in contact with the metal or when the spindle c is init applies the-bat; tery', and the line is ready for a call. I The. use of the elastic jaw tand plate .9 is to enable the person in attendance to apply a telephone, introducing it to either circuit with which he wishes to communicate; but instead" of the jaw and plat telephone may be a'p-f plied to each circuit? In-Fig, 7 the telephone is shown astitted for introduction between the jaw t and plates. The "two wires of the telephone terminate in wedge-shaped metal tips 't and f, with an in- Sulator between. The operator forces .this wedge shaped tip between the jaw and plate, and thereby makes connection through the either of tho The operation of the switch is as follow-s5 branches thereby being applied to every circuit, each circuit having abell or-other signalat the oflice, which indicates a call to the otfice on that circuit. Now, suppose a-oull to come from the vfirst circuit, c, the operator pushes in the spindle b on thatcircuig-which throws 011" the battery and puts on the ground. He then places his telephone into connection with that circuit, and receives communication from the person calling, saying, for instance, that he wishes to communicate with a'certain person, whom the operator ascertains to be on the circuit of. He-then pushes in the spindle a of the circuit 12, "as in Fig. 3, throwing oii' both battery and ground; then pushes in the spindle b of the circuit 0", and with the key of circuit o 'gives the signal required to call that. particularperson, and introduces his telephone to the same circuit. The person answering, the operator gives the intormat-ion that communication is open forhim with the person who called; He then presses in the spindle a, tale ing off both battery and. ground, and at. the same time presses in the spindle ll of the re- E is, tliatdifferent circuits may be in use at the same time-as, for instance, suppose the first and third are in'nsc, as before described,

a call comes from the second circuit-totem municato with the four'thgn second bar would be used-for connecting-those circuits, and two other circuits would take a third ban-and so on. The circuitspindles h are each provided,

- with aspring, asnoted in; Fig. 2-,:t-he tendency outward and 5 'ltwill .be observed that communication, is l V made from the nniinwire through the key to of that spindle and make grouml-connection;

of which is-tohold the spindles prevent'accidental connection of the circuits.

theswitch board. Hence when the key isde pressed to take it away from the bridge m and make connectioirwith the button below, the

uswitch-board is cutoff from the main wire a. The adyantage of this arrangement is as fol- "The'object for employing several C lowsr- Supposing the switch-board to bclongcr thun' iwil-l allow the operator to reach over its extent, and that a call has cometo' him from one of the extreme circuits. Having received hth'c call, he presses-in thev lowerspindle to disconneutboth battery and ground; Then, hav-- ing madetheconnectiou with the bar above, he proceeds to call on the desired-circuit, whichmay be at the other extreme. Having made the call and the connection above with the.

san e bar, hofinds that the called party is not respohdiiw. He then applies the key tomake I a recall on that party. Now, if the connection were through the switch-board to the keys is usual in such switches, the callm de' on second circuit would also passthrough thebm on the first cirouit'and make the call upon that circuit also, which would at once create confusion, unless the two parties should have the same signal; but becauseof'the connection in each circuit being made through the key and bridge it follows that depressing the key from the bridge cuts off the switch-board, and the signal is made by the contact of the key with the button, the current; passing out through I the key directly to the main wire. Heuc e-the call may be made onany 'onecircuit, notwithstanding that circuit may be in connection with one or more other circuits, and that call not extend beyond the circuit on which it is made. I

The lower spindle, a, and the lcvrswhieh connect the several spindles a b a may be dispensedwith, and yet the switch-(board be fully operative. In that case,.however, the operator must work the spindles b c indepcn'ddntly of each other-'that is, pushing in ,or pulling out,-as the occasion may require.

1. Theswitch-spindlcs a b 0,.combined with as thisv dependent circuits, and a bar, U, with couphugs arranged to place either one of vsaid'circults through said bar, substantiallyas detrical connection common to two or more con- 5 either of ,t-lrcothers which may happen to be of which are provided with insulators. with of the subscribers wires,

without communicating such signal to the a systemofl evers', substantially as described, whereby thepressing in of one throws out in, substantially as andt'or the purposede scrib ed. v H 2. The combination of the spindles abc, two

metallic connections, respectively, with the battery and ground, whereby eith'er the battery or ground may bea pplied or both cut off, substantially as described I 3. The combination of the two spindles b 0, arranged to out on or apply, respectively'the ground or'battery on one-circuit, combined with. other series of likespindles on other incuits in connection with another of said cirscribed.

4. The combination of the two spindles b 6, arranged to cut off or apply, respectively, the ground or battery on one circuit, combined with other series of like spindles on other independentcircuits, and two or 'more bars, 0 I) E, each provided with couplings arranged to place two or more of said circuits in connection with two or more other circuits through said bars, substantially as described.

5. In a switchboard, substantially such. as described, the combination of several keys, each on an independent circuit, and each key in direct commui'iication with its particular wire and corresponding brid'geor contact con-- nected to the other wire through the switchconnecti'ons, whereby communication from one subscribers wire to another with which it may be placed in connection must be made through the keys and bridges to the connecting-wire and each of said keys being free to signalthrough its own wire other wire with which it is in connection, substantially as described. I

- 6. In a telephone-exchange switch, the combination of several subscribers lines, each provided with a spring-connection, and a beveled or otherwise formed connecting-piece, an elecnecting-p'ieces, arranged to connect their respective lines through such common electrical connection by frictional contact upon said springs, each' connecting-piece being provided with a spring to hold it from accidental con tact when placed in,a disconnected position.

7. In a teleplione-exchange switch, a call-' ing-key, a bridge or contact therefor normally in the line-circuit between said line and the connecting devices of the switch, a second contact normally out of circuit, but connected to a generator, whereby the depression of the key cuts oii the switch-board, and at the same time connects the line with the generator,substantiall y as and for the purpose described.

8. In a telephone-exchange switch, thecombination of two or 'more independent lines,,

each connected to said switch-through a key and. connecting-pointnormallyin contact Wil b said key, provided with electrical connection to a generator, substantially as" and for the purpose described. I

9. In a telephoneexchange switch apparatus, the combination, with a series of main-. line connections and devices whereby any two of the main lines-may be joined for oral com. munication, of signaling devices for signaling to any oneof the lines separately, and a branch or loop independent of the signaling devices,

which includes a telephone, and whose terminals are connected to divided insulated metal tips adapted to interpose said telephone in the several lines, thereby adaptingthe telephone to be placed to the ear for listening and enabling the central-office operator to insert. said telephone in any two connected lines without interruption to passing conversation.

10. In atelephoneexchange switch, normally-closed signaling-keys or circuit-breakers, one in each line at a point between the line and-the connecting switch devices,wl1ereby the switch-board is cut off from the main line when the key corresponding to thatline is depressed.

1. In a telephone-exchange switch, devices for connectingany two lines and a main-line battery normally connected to line through keys and circuits independent of said connectng devices, substantially as described.

12. In atelephone-exchange system, two or more independent lines normally connected at a central ofiice to a battery, switch devices for disconnecting said battery and connecting a line to an independent ground having no bat tery, and a branch wire from each of said lines to the connecting devices of a switch, substantially as described, so that the niainline circuits to earth at the central office are independent of the switch devices for connecting any two lines.

13. In a telephone-exchange switch, aserics IIO of lines, switch devices by which any two of the several lines may be connected, and independent connections through which the several lines may be. placed to earth at the centraloiiice.

14 In a telephone-exchange switch, connec tions for each line to a, battery, said connections passing through a calling-key, (one for each line,) means for connecting each line to ground independent of said battery, and de vices whereby a telephone maybe placed in eitherline when .it is grounded, whereby signals may be given upon each line, and when oral communication is desired the telephone may be put to earth, the battery being with drawn from the line.

15. In atelephone-exchange switch, a series of main lines, devices .for maintaining oral communication through either line independentof the condition of the earth communication for the other lines, and iudependent connecon each line separately and independently of the devices used for oral com innnicntion.

It. In a telephone-exchange switch, a series of main lines with devices for connecting any Y two of said lines for orai coni mnnicntion, and separate devices for connecting said lines to a battery and to anintlepemlent branch ieruling to a batter-g for outgoing signals. 17. In a telephone-exchange switch apparatus, two or more inclcpeinlentline's lending to subscribers stations, devices for connecting any two lines for oral coimnnnicntion,'independent branch circuits (one for each line at the central oilice lending to a generator for si nnlingpurposes,and(lisconnectingtlerices(one for each line) interposed between the, line and 4 the switch devices by which any two lines are connected ,wherebye signal may be gi ren upon eitherof two coi'aneeted lines to the exclusion 'ol'the other without manipulating any of the.

devices upon such other line.

18. In a central telephoneexchange system, a. series of main lines, devices for connecting any two of said lines for oral comuii'mication, and connections for each line too. battery, whereby signals may be sent to subscribers stations on either of said lines independent of incoming calls on any other line.

19. In a telephone-exchange switch, a series of main lines, devices for connecting each line to a branch leading to a battery m'n'ina-lly ep- V plied to each line, to an independent branch lending: to a battery for the purposes of sig: nnling from the central ofiicemr to a third independent branch without a battery for-oral com'nmnication.

' 'enonc-n nann Witnesses H. (J. Townsiann,

Joan J. ]-)IFFLEY.

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