US1055989A - Telephony. - Google Patents

Description

E. R. GORWIN.

TELEPHONY. APPLIOTION FLLE) NOVA, 1909A RHNBWED JULY 27,1911y Patented Mar. 11, 1913.

y f @j/W '10 this specification; l i l y f My invention 'has ,for 'its yobject. the pro-4 NITED STATES PATENT OFFICE... N,

.E Livinn n. eoizwlnor CHICAGO, iniaNois. l

dirimirHONY.'

l.Specification of Letterslatent.

- Patented Mar. 11.1913.

criginai application' filed' Jneis., isoafsferiai Ne. 502.243. inviami and thigappiia'tin nien November "4.1909, seriai N o. 526,196.4R`neivea iuiyazuisii. sei-iai No, '640,933'.

To all, whom .2'15 may4 concern:

' citizen of thel United States,r`esiding at' o-fllllinois', have invented a 'certain new and' `useful'Improvement in Telephony,-`o v which the lfollowing -is,a full', clear, .conci e,4 and.'

elk'act description, reference beingfliad tothe.

accompanying drawings; 'forming a' part of .vision .of an iinproned, constructionfor a tele hone receiver" Where'byf it may be ren'- der'ed very compact andinay be -vei`iy readily assembled and disassembledfthis 'appli' -cat-ion being a divisio'iiof my application .Seriali No. 502,243,1iled rJ une 1.5, 1909.'

'It will., explainkmyinvention very .f'i'ill'y p by .reference to; the .accompanying drawing, inwhich:-'

Figure 14 is a .diagrammatic View i`i1'u's` trating a telephone eXchahge 'system as .e'qu'i ped with a 'receiverl constructed. iii ziccordancejitith the preferred embodiment of tlie invention,. Fig. 2 is a longitudinal sec.'

tional View. of a. receiver 4(a part otits 4cas-j ing being absent) -n'iade in accordance with f the preferred embodiment-'of the-intention. Fig. 3 is aplany-iei't7 of`a plate' adapted to be secured yivith respect to the receiver casing.l `Fig. 4 lis a-'viewshowing `the electro-magnetV structure, one lof the plates shown Fi'g. 3 being absent. "Fig 1s anelevation showing the assembly of the stru/cfrtures illustrated in `Ifigggsfand-4. .Fig- 6, is a pla-ii Viewl of the structureshown :11i

Fig. 5.

' Like-parts are indicated by 'similar char-1A Aacters otre-ference throughout thediii'erent.

40 figures. y c A Referring first to the diagialin the .sides 1 and Z ot'- each t. lephone lineillustrated? extend to the-exch.- ge, Where tliey are con-A` nected with the -tip and sleeve .contacts '3, Lof a jack sWitclrfAt ,each of the ,suhfy station' I have illustrated a transmitter 5',

-which is preferably included'seria-lly inthe line between the sides thereof, battery c-uiy L rent being supplied'to the transmitter when 50 the cord circuit illustratedat 'the exchange is connected with -the line extending to the station where .the transmitteris located.` S have illustrated atfthe exch-ange'l a plug (i, and a common battery, 7, which common battery is shown-connected in a vco'nifeiitional Viiiannerbetweeii the sides of the cord 'pihoii'ic apparatus-,- asftliesefai'c' s o 4Well kno-Wn'- as' not" to require 'illustration' I r have shoiif'n'illy. improred-.receiver Sateacli telephone .sub-station, and lwill ifstwlescribc vthe circuit relation 'thereof invcorinectioii `niagnetiz'able iron core Awhich isx'foinicd to lpresentits polarfe'nds toithe rece'ii'jer diaf' phrag'in, thc polarendi of the core-carry# ing thejvoice current" i'yindings 9 aiid,10, lwhich are' parallel "relation with cach ',other-nnd togcltlier'arein serial rela ti on wil-li the line -and the` transinittei, these voice function-of energizing the-core of tli'e re'- ceiver due to, the passage-.ofxlirect current -froni the. battery y7v through said Vwindings andfalso Vb'eing responsivei to. voice currents passed over the' lines;- the i\ ,iudiii'gs '9"ai iil 10 being' wound to present littlel impedance 'to the' voicecurrents but being' ot' siltlicintly low-resistance to permit of' the proper trans mission offcurrentfrom the co'ii-inioii bat-4 tery, theoli-m'ic resistance oeachTof-'tlie'- windings' being preferably fifty ohms. The

lWill so-ni'agrietize'th-ecore of lthe receiver' positive'sfign and the othei'pole of said core to have a .negative sign. 'Tlie "joint resistance afforded bythese vwindings is 'thus 'equal ,to' one-half of the resistance that is currentajvindiiigs, .p'ertoiiniiig .the double -V '90 `i`vindingsf9 andl 10 are .so-related to each if other and tol the common battery, Athat they' presented-by each `Winding alone. V- By this a-irarigenient1, therefore, .-I am :enabled to which at tliejsani time is wcll adapted to? the energizing vsource l'through the receiver.

through the transmitter 'ot supplying tliesaiiie 'with operating current.' I-have illustrated :it-each telephone statioma switchhook '11f` having an uppersecure a receiver-wliicli-is wellada-ptcd' to jespond to incoming telephonie currents and permit! ofthe transmission 'of current vtroniv "for thevv 'pui-pose.. of energizing it, and

,' for 'the purpose' Contact. fo in'cl'uding'the-receiver-a niitter 1n serialrelation with the 'l1 en hen the switchliook isrelievedoftlieiveight-of the receiver and for including the signal 5 bellA 12 and condenser 13 in bridge of 'the f invention, and Whiclr is netto-beliniited"A to\ the use'that has been illustrated. 'y The .core of t-he telephone 'receiveris'inade up of tivo core portions14`tliat'are' of stripV iron, the" polar ends 'of these core'portions coils '9 and 410, while the other ends of said, core portions'ltare closely'appr'oac'hed and firmly united to constitute the neutral/por` Thus theC core "portion ofthe receiver comprises tWo strip iron;

tion of i* the `core,

' pieces mechanically united at their rear adjacent lends to bring saidcore portions into" the saine magnetic circuit 'and-'spread apart at thei r pol a r ends inorder'to permit ofthe.

disposition ofthe ivindings A9 10' about said o'rtions are preferably formed but inasmuch as this feature on is of a. structural nature,

lsoft iron/for lthe core portions. The polar portions of ,the receiver core, are notched lfat141justback ofthe 'polar faces of thee-ore,

andin front of thefvoice coils 9.1` )v.`4 Af'shallow pan 15 hasits base? provided i 'tivo apertures 16l that are l-shaped at of the receiver to pass therethrough stof thecore that are reduced'by lthe notches 141, the height of the; notches at141 beinglsuclras' to correspond with tlie`tliickness ,of the pan 15,.,so. that 'the .bottoni of 145 whentlie.panbott-oinis brought into regis ter ivithsaid notches. In assembling the par,t st he portipnsof the core are engaged Withthe pa'n'bottoin in thenianner Which $01 has been described, Where'after the portions forming the core. are claniped togetlier,l ivlieresuchas that illustrated 11520:v By the ar- #rangenient which I have described, the voicei f coils arelupon one side `of the pan and the polarprojections of the vreceiver coreare upon the' other side of the pan. When the pan bottom-ia'nd the core are tobezinter-v l-njlocked, a., relative lateral movem'entisv beingA Surrounded by the voiceE .current '.vvhen the strips of insulation and the Iterouter sides 1f( to permit the pola-r porl are shaped at t-lieir inner sides 18 only" iai-.receive the portions ofv the polaiextreni'i-v zt' e said pan may be-.slipped into said notches brouglit about between. the Aco'fic-aiid the vpan bottoni, a reverse lateral movement. permit-V ting of-thedisengagenientofthe pan bottom and core.

The conductors which lead to the voice current Winding are provided each with a terminal 21fornied preferably out of thick` strip brass, theseterminals,- in turn, beingy connected `with -t l ie joint terminals of the receiver coils. These terminals are disposed between two strips of insulation Q2 which 'have interlocking connection with the terminals, to preventnioveinent ofthe terminals with respe'ctto theI strips of insulation minalsareassembled. The core ,of the receiver is` .fdisposed between the strips of in,

,sulationf and a single fastening 'screiv 23 i is passed through the core and ytlie'strips of insulation and-serves "to bind the coie,'tliej strips of insulation and the terminals yin fixed relation;

` hile I have herein shoivnand particle 5 larly describedl the 4preferred `eiribodiinent of inyiiiventioinl do not ivisli to be limited to theprecise construction and arrangen'ieiit set forth, as changes inayreadily be made witho-ut depaiting from the spirit of the invention., f i .f

Having thus "described my invention, I claim as neiv and desire to secure lby Let@ tei-s Patent the following 1. te'lephoiie receiver 'including a, pan, a

'diaphragm supported by the pan in opera! tive relation with the' receiver core, the '100 voice winding of thereceiver lying lu pon that side of the'pa'n which is opposite tothe side on Vwhich vthe/diaphragm is disposed, thel receiver core, projecting through the pan bottoni Ainto operative relation ivith the re'- ceiver dia'plii'agni, tlie pan bottom thus being interposed jbetiveen the extremity of the Core adjacent tothe diaphragnr and the voice ivinding, said core being` notched back of a polar face thereof and in frontof the voice curre'nt Winding, `the bottom of said4 panI having y an opening formed therethrough, Which, at one portion, is capable ofr receiving the notched portion; of the core and is not capable of receiving the portion of the core above the notched portion, and having aiiotlierpart Which permits of' the core portion above the notcliing to pass througlithe pan bottoni, ivhereby. the pan bottom and core poi't-ioii may be assembled 12`0 and interlockedQ 2., A telephone receiver igncluding a pan, a diaphragm supportedbv he pan in operative relation with the receiver core, the receivercore projectin through lthe pan bottominto/operativere aftion with the receiver the core and is not capable of receiving the unnotched portion of the core, and having another part which permits ofthe unnotched core portion to pass through the pan bottom, whereby the pan bottom and core-portion may be assembled and interlocked. i

3. A telephone receiver including a pan, aA diaphragm supported by the pan in operative relation with the receiver core, the receiver core projecting through-the pan bot tom into operative relation with the receiver diaphragm, said core and gthe bottom of said pan being yconstructed to have interlocking engagement.

j 4. A telephone receiver .having terminals for connection with the line and the Winding of the receiver, strips of insulation between Whichthe terminals-are disposedan'd having interlocking connection with the terminals and serving to positionl the same rela-y tively, and means for fixing said terminals, strips of insulation `and receiver qnre with respect to each other.

5. A telephone receiver havin terminals VJfor connection 4Withthe line an the winding of the receiver,strips of insulation between which the terminals'are disposed and having interlocking connection with the termnials and serving to positlon the same relatively, the core of the receiver passing between the strips of insulation, and means for fixing said terminals, strips of insulation and receiver core with respect to each other.

6. A telephone receiver having terminals for connection with the line and the winding ofthe receiver, strips of insulation between which the terminals are disposed and having interlockingconnection with the 'terminals and serving toposition the saine relatively,

, the core of the receiver 'passing between the strips of insulation, and a screw Whose stern passesthrough the strips ofinsulatlon and the ',receii-'er core to bind the receiver core, strips of lnsulation' and terminals 1n posi-- tionwith respect to each other.. vIn .Witness whereof, I hereunto subscribe my name this second day of Nov`elnber,-A. D.

ELMER R. CORVVIN. XVitnesses CARRY B. DAv1s, CLARENCE E. Coon.

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