US2434959A

US2434959A - Call transmitter for interstate telephone communication

Info

Publication number: US2434959A
Application number: US616621A
Authority: US
Inventors: Charles D Richard
Original assignee: Bell Telephone Laboratories Inc
Current assignee: AT&T Corp
Priority date: 1945-09-15
Filing date: 1945-09-15
Publication date: 1948-01-27
Anticipated expiration: 1965-01-27

Description

C. D. RICHARD Jan. 27, 1948.

CALL TRANSMITTER FOR" INTERSTATE TELEPHONE COMMUNICATION Filed Sept 15,- 1945 5 Sheets-Sheet 1 WVENTOR C D R/CHARD A 7 TOR/VEV Jan. 27, 1948. c. D. RICHARD 2,434,959

7 CALL TRANSMITTER FOR INTERSTATE TELEPHONE COMMUNICATION 7 Filed Sept. 15, 1945 5 ShetS-Sheet 2 FIG. .3

44. P9 PM 2 INVENTOR C. DJiICI-I'AIPDv AT ORNEY Jan. 27, 1948. c. D. RICHARD 1 2,434,959

CALL TRANSMITTER FOR INTERSTATE TELEPHONE COMMUNICATION I Filed Sept. 15, 1945 5 sheet -sheet";

FIG. 5

lNl/ENTOR, C. D. RICHARD v T EWQ Arrows"? Jan, 27, 1948;

c. D. RICHARD 2,434,959

CALL TRANSMITTER FOR INTERSTATE TELEPHONE COMMUNICATION Filed Sept. 15,- 1945 5 Sheets-Sheet 4 MC 97 Y INVEN TOR 3 C. D. R/CHARD 29 6,2 I 34 0 I :9 82

a3

1, 1 36 we Z A V a 1 A z/ I A T TORNEV Jan. 27, 1948. c. D. RICHARD CALL TRANSMITTER FOR INTERSTATE TELEPHONE COMMUNICATION sheets-sheets Filed Sept. 15, 1945 FIG 12 Mill) CHE 5 PENN 2 IND. l2

OKLA. MISS.

. VA. IOWA 19 20 KAN. WASH.

5.6. EVA

CONN- NEBR.

ND. MONT. UTAH 35 5.

I k5 I K5 I DEF GHI 4L S V R7 U P T 7 K L O K5 6 J M INDICATOR STATE AND CITY CALLING KEY ABC INV'NTO/P CUR/CHAR!) ATTORNEY Patented Jan. 27, 1948 TRANSMITTER FOR INTERSTATE TELEPHONE COMMUNICATION Charles'D. Richard, West New Brighton, N. Y assignor to Bell Telephone Laboratories, In- 'corporated,'NewYork, N. Y., a corporation of New York Application September 15, 1945, SeriaI No. 616,621

13 Claims. (01. 179-90) This .invention'relates totelephone call transmitter devices.

The object of the present" invention is the provision of a call transmitter device of the type referred to which isparticularly well adapted for use in interstate telephone. communications as by coaxial cables for controlling the operation of so-called automatic switches .for establishing talking connections between a telephone subscriber in a city in one state with a telephone subscriber in a. local communityin another state, such call transmitter device'being simple'in construction, convenient in use, positive in operation andby whichtelephone call designations consisting of a numberof'trainsof pulses are transmitted with a minimum number: of manual operations with means for indicating each. of such manual operations.

In the telephone call transmitter of'thepresen invention, a manually operable "knob is provided for moving a hair line or index in registry with the name of. the state desired appearing on a printed card fitted in a window in the. casing housing the transmitter mechanism.. The movement of the index is effective to condition a pulsing mechanism for transmitting a number of. pulses or a continuous series of trains of pulses which may be greaterthan ten pulses representing the call designation, necessary for establishing connection with the selected state followed by the operation of a key member, controlling the energization oitmotor means and that of a clutch operatively connecting the motor means to a pulsing: mechanism. Asecond selective operation of the index relative to numbers printed .on the card is efiective to condition the pulsing mechanism for transmitting a call designation to a telephone exchange located in the called state nearest to-the cits of the d'esired'telephone subscriber which is efiectedfollowing a second operation of the key member serving to control. the operation of the motor means and that of' the clutch. Means is provided for returning such a key'to normal position for stopping the operation. ofthe motor and. the release of the clutch mechanism following each state and city call transmitting operation by the selectiveimec'hani'sm, while a set of digit key members is provided for controlling the operation of a second pulsing mecha nism actuated by the motor means through the operation of a respectively associated clutch mechanism for extending the talking connection from the city located in the called state'to the desired subscriber, means being-provided for'indicating the number orsymbolof the key de- 2 pressed at each stage in the writing of the call designation.

In the drawing Fig.1 is an elevationview of the call transmitter of this invention shown in perspective;

Fig. 2 is a diagrammatical view showing the driving" mechanismforoperating the state and city pulsing mechanism and the city to subscriber pulsing mechanism;

Fig. 3 is a partial top view showing the digit keys controlling pulsing mechanism with the key indicator in normal position, the keys being shown with portions broken away;

Fig. 4 is a partial'left side elevation view with the base and the casing shown in longitudinal verticalsection taken on line 4 i of Fig. 6, the operating parts being shown in normal position;

Fig. 5 is-a right side elevation view shown with the casing partly shown in vertical longitudinal section taken on line 5-5 of Fig. 3, the operating parts being shown in normal position;

Fig. 6 is a rear elevation view of Fig. 5 shown in vertical cross section-taken on line 6-6 of Fig. 5, a number of operating parts being shown with portions broken away;

Figs. 7, 8, 9 and were partial views showing the keys'controlled pulsing mechanism in difier entoperated positions;

Fig. 11 is an elevation view of the casing partly in section to show the mechanism operated by the placing of the telephone handset in a cradle formed with the casing, such mechanism controlling'the release of the key-indicating mechanism atthe conclusion ofa telephone conversation; and

Fig. 12 is an enlargedviewof the card showing the geometrical arrangement of the state names and cities number designation and that of the digit keys used for establishing talking connectionsbetween cities and the telephone subscribers in such cities also showing the digit indicator for such keys and the starting key for the motor actuating the pulsing mechanisms.

According to the construction of the call transmitter of thisinventi'on as best seen in Figs. 3, 4', 5' and 6;, a base ZU-is' provided for securing a plate ZIhaving upright supports 22 and 23 formed integrally therewith serving to support the ends of a shaft 24 and'on this shaft is pivotally mounted a setof key members Kl, K2, K3, K4, K5, K6, K1, K8, K9 and Kill which are held in normal position as shown in Figs. 1, 4, 7 and 11' by similar retractile springs 28'. Each key member Kl, K2, K3, etc., is associated with a pawl1ike member 21 provided for locking its respectivekey in the operatedposition as shown by key Kill in Fig. 9

3 and to perform a function which will be hereinafter described in detail.

Pawls 21 as best seen in Figs. 5, '7, 8, 9 and 10 are pivotally mounted on a shaft 29 and are normally held in engageable relation with studs as carried by keys Kl, K2, K3, etc., by the tension of respectively associated retractile springs 30 secured to the base H as by rivets 3i, the operation of the key members KI, K2, K3, etc., and the stud 25 carried thereby being effective to impart a pivotal movement to these pawls which is transmitted to a U-shaped bar 32 pivcted'on shaft 29 and to an arm 33 formed therewith foroperating a yoke-shaped member 34 pf a switching device which will be hereinafter described in detail.

The operation of any one of the pawls 21 and the U-shaped bar 32 is effective to impart apivotal movement to a plate 35 mounted on shoulder screws 36 .for positioning the bent portions P at the top edg of this plate in the path of lugs 31 formed at the free end of the unoperated key members KI, K2, K3, etc., as the case may be for locking the latter into that position. Each pawl 21 as best seen in Figs. 4, 5, 6, 7, 8, 9 and 10 is formed with 3. lug 38 for engagement with the free end of an arm 39 serving to hold such a pawl in its operated position for permitting the return of the operated key to normal under condition which will be hereinafter described in detail. On each pawl member 21 is pivotally mounted a four armed lever member 44 which is moved by the operation of its supporting pawl member 21 in position wherein the free end of arm al of lever member 40 is positioned in the rotating path of a projection as PIP2, P3--P4, P5P6, Pl-PS, and P9--Pi6 as the case may be formed with discs 4|, '42, 43, 44 and 45, respectively, which are mounted on a shaft 46 of square cross-section as shown in Figs. '7, 8; 9 and 10 for assisting in readily locating the proper staggered or spaced angular relation of discs 4|, 42, etc., relative to'each other andrelative to the teeth of a pulsing cam 63;

Shaft 46 as best seen in Figs. 3, 5 and 6 is rotatably mounted on upright extending support 41-41Y formed with the mounting plate 2| and to one end of shaft 46 issecured the inner convolution of a spiral retractile spring48, the outer convolution of which is secured to a pin 49 lateraliy extending from upright support 47Y as shown in Figs. 5 and 6 while an arm 56 keyed on this end of shaft 46 is provided for engaging a pin 51 carried by a wheel 5i having marks representing the symbol printed on the keys Kl, K2, K3, etc., for indicating the operation of the keys and the operation of a pulsing mechanism which will be hereinafter described in detail, the wheel 5| being mounted for free rotation on a spindle 52 secured to an upright support 53in juxtaposition and in coaxial relation; to the longitudinal axis of shaft 46 while a retractile spring 54 is provided for returning the wheel St to normal position upon the operation of a retaining pawl 54Y best seen in Figs. 6 and 11 mounted on a pivot 55 laterally extending from upright support 23 of plate 2| and engaging with a ratchet wheel 56 formed or carried by the indicating wheel 5! to hold the latter in each indicating position.

The pawl 54Y is formed at its fre end portion with a projection 58 disposed in operable relation with a cam 59, the rotation of which is effective to disengage the pawl 54Y from the ratchet wheel 55 for permitting the return of the indicating wheel 5! to normal position following each operation of a switching device MC of which the yoke member 34 forms a part from the position shown in Fig. 7 to the position in Fig. 8 as effected by the engagement of a pawl 66 with the arm 34 of the switching device MC upon the pivotal movement of U-shaped bar 32 as above described, the switching device being held in normal and operated position as the case may be by the tension of a toggle spring 6|.

The switching device M0 is returned to normal position as shown in Figs. '7 and 10 by the engagement of arm a2 of any one of the lever members 46 with a bar 62 formed with the arm 34 of the switching device and common to all the lever members 46 to perform a switching operation which will behereinafter described in detail.

On the end of shaft 46 as shown in Fig. 2 opposite to the arm 56 is keyed the pulsing cam 63 while a magnetic clutch MG is mounted for free rotation on shaft 46 in attractable relation with the pulsing cam 63 and a worm gear 64 for rotating the pulsing cam and the discs 4|, 42, 43, 44 and 45 keyed on shaft 46 upon the energization of the magnetic clutch MG and the simultaneous operation of a motor 66 in a circuit which will be hereinafter described in detail. The operation of cam 63 is effected by a worm 61 keyed on the armature shaft of motor 66 meshing with a worm gear68 keyed on shaft 16 to the opposite end of which is formed a worm 69 meshing with worm gear 64, the shaft 16 as shown in Figs. 4, 5, 6, and 7 being supported in bearings II and 12 formed with upright support 41.

The worm gear 64 is provided with a sleeve l3 best seen in Fig. 2 having a collar portion 14 of magnetic material and on the end of shaft 46 is mounted for free rotation thereon a magnetic clutch MG2 provided for actuating a shaft 15 independently of the operation of pulsing cam 63 by clutch MG following the closing of a contact 76 by the manual operation of a key. member 11 for energizing themotor 66 and the magnetic clutch MG2 through a circuit comprising th negative side of battery 18; the conductor 79, the closed contact 16, conductor 60, the brush 6! of magnetic clutch MG2, the slip ring 82, the winding of the clutch (not shown) the slip ring 63, the brush 84, the conductors and 86, the armature winding of motor 66, the conductor 86 to the positive side of battery 18, while the rotation of pulsing cam 63 by motor 66 is effected independently of the-operation of shaft 15 upon the energization of motor 66 and magnetic clutch MG through a circuit comprising the negative side of battery 18, the conductors l9 and 89 secured to one of the springs 16, the brush 96, the contact MC of the switching device 34 when operated by the bar 32 under control of any one of the keys Ki, K2, K3, etc., the brush 6|, the conductors 92 and 86, the armature winding of the motor, th con-- ductor 88 to the positive side of battery 58 thus starting the operation of the motor but the clutch MG is not operated. A circuit for this magnetic clutch is effected following the operation of switching device MC for starting th motor 66 through its conductor 93 connecting with conductor 89, the brush 94, the winding and slip ring of the clutch MG, the brush 95, the conductor 96 and the brush 6? now in engagement with the contact MC of the switching device.

The operation of shaft 15 is effective to rotate a pulsing cam Hill for opening the pulsing contact i0! and to actuate a worm I02, the latter meshing with a worm wheel I63 keyed on one end of the shaft I64 on which is mounted a series of code RAE/$969 discs numbered'l 110x48, inclusive; andxmarked with the names representing, for example, the-40 states. of'the UnitediStates A bar I05v secured at bothends to arms I and I0! keyed tothe shaft I04 to. serve for? locating the discs .I to--40 in alignment relative to eachother on shaft [04, such a-bar defining the starting positionotsuch discsrrelativeto an: arm I08, the function ofwhich wlil be hereinafter described in. detail.

The operation of shaft I'5- through. a pinion L09: keyed thereon is effective to rotate a :gear 1| I0. keycd'at'one end of a shaft Hi and thereby-asaw-toothed. clutch member M2,, provided for actuating .its complement clutch portion M3. when engaged forrotatingra cam IM'mounted on a-sleeve Hi for movement as a unit with the clutch'portion H3, but normally'held againstla stud ST carried by an arm -I I-1 by a iorlc-type lightrihbon spring SP which is flexed by the tension of aspring IEO for engaging the clutch. I13 with its. driving complement clutch I I2 under conditionswhich. will be hereinafter describedi-n detail.

The arm I08 is' normallyheld against themriphery-ofza selected disc as for example Tenn..-15= by the tension of thespring tIfi hooked to the arm .I: i! on which gear racks H8, and II!) are securedrthe arm III being-provided with abearing:portion I IS in which the shaft I is supported "for rotation as the. manualoperation. of; a knob i2t for actuating a; worm I221 engaging the gear racktI8 and H9 tormoving thezarm I08 selectively in operative re1-atiomwith-any one Of the code discs on shaft I00, suchseleetive movementbeingeitective to: positionathe" hair. line or'index l23 carried lay-arm t08inregistry with the-name of the state selectedor the number'oi the telephone exchange.- particularlyz'ofthccity-in. the selected state as the. caseimaybe.

The arm I is! is provided with. a-studi I' Ms-ofinsulating material disposed in .engageable relation. with the operable elements I25 of a shuntin contact I26 for closing such contacts under the tension of spring IIB when the selecting arm I08 drops intoany one of .the inter-digit spaces or recesses re whichare of equal length formed; by the teeth TI, T2,.T3, T4, T5, T6, T1 and T8 which may be of anydesired number and. which may equal any numberoi turns of pulsing cam I00 greater than ten pulses. if so-diesireddepending. upon the number of trains ofpul-sesnecessary: to!" establishing a telephone call designation with a particular exhange. in-v astate andthe extending of such call designation to-a desired subscriber. The-teeth TI; T2, T3, et.c.,, areiformed withangular distances corresponding to oneora. number of turns. of impulse .cam tilii whille therthread of driving worm I02 is formed so as to impart an intermittent movement to shaft I100 and the code discs carried thereby so as tornaintainthese discsstationary during the opening period-of pulsing contact IIH by the continuous rotation o'fcam I00,'the number'of teeth of worm gear I03,beingequal to the number of stoppositionsrepresented' by'the teeth TI, T2, T3, etc., ofjthe code discsand therefore. that of the number of turns. of pulsing caml'00.

On shaft I04 is. keyed adisc I26provided with. a recess at its periphery .for engagementwith a lug I21 formed with a key 1.1 under the tension of the. operable spring of contact. [6 to cause the opening ofsuch a contact and the. stopping of motor 66 following each complete. turn of. shaft i104: and to hold this shaft and. the code discs 6 carried thereby in the normal starting. .Lposition asshowni-n Fig.2;

The: key controlled pulsing'mechanism and the code: disc -.controlied. mechanism. are: enclosed as shownzin. Etc. -1. a housing formedbya casing CA securcdto the base.- 20;, the casing having-awindowopen-ing, W0 through which the symbol of each successive key" appears in the transmitting operation of a call designation inaddition to a window opening, W02 through: which. the card. CD bearingthe state-exchange name,:.the-.nunrberz of the cities. exchanges and: the. index may-bevisually observed.

:A typical; example of operation of the telephone call transmitter'of this; invention; is :as; follows:

Supposing that. a. telephone subscriber in :New York city" desires toestabli-sha telephone. connec-- tion-with. a. telephone: subscriber residing in. the State-of Tennessee :and. that the telephone" call designation ofthe subscriber is TENN-48-ZR23'74 the-manualrotationof knob I '2I and therotation of'worm Ihzis effective to move the indexlifi: in registrywiththe-vertical line associated with the. name-of the desired state, that is TENN 15 asappearing on the card CD bestseeninFig. 12. This selective movement is effective to position the arnrl I187: in registry or operative. relation with the code .disomarked

TENN

15, 2. Under this condition :theoperationofkey TI is efiective to close thetcontact 156. while disengaging the .recess of disc tZIionshaft'IZA, The. closingcof contact 16 causes the energization of motor 66 and mag.- netic clutch MG2 in the circuit above described. The rotation of worm-gear-{Si t and disc I4 movable as a unit therewith causes the rotation of the magnetiaclutch. MGZ' and thereby that of miter gears Mi and M2, the latter rotating the shaft i5 and consequently the pinion I09, thepulsing. cam; Hi0 and worm I02 in-the direction indicated by-the; arrow shown in Fig. 2. The. rotation of pinion I509,- iseffective to rotate the gear I I0; keyed on-sha'ft HI andtherebythe clutch H2.

The-shunting contact L20 is closed by the engagement of stud I24 carried by arm It! under the; tension of spring H6 while'the arm I00 abuts againstlthe: bar'ida-andthat portion Q: at the peripheryrot' codezdisc TENN 15 preventing the engagementof clutch element II'3- with its complementclutchel-ement H2 with the result that the cam. tI' Iiisnot operated. Under this condition the mechanism above described. permits the motor at .toreach maximum speed prior to the operation ofthe; pulsing mechanism; which begins uponithe engagement of arm I08 with the peripheral surface. of recess re; forming. the first interdi'git. space. The movement .of this arm causes a furt-herflexing of the'shunting contact spring tziiandztheengagementof. clutch H3 with clutch element l-Izztor'rctatingthe cam II4 a complete turn whicncorresponds. to five turns of shaft 1:5 dueztothesspeedratio of pinion. I09 and. gear I1 I10 on five teeth-.01 worm gear- [103.

The rotation of cam. l M is effective toimparta pivotal-movementtosarm I-IFIwa-ndthereby to arm m8 tor'positioningthei latter on. the peripheryrof tooth. TI; simultaneously with the disengagement ofthetclutch Inf-H53 by-spring SP- causing the opening. ofz shunting contact I26 which remains. opened during-a number 'ofturns of pulsing cam. W0 corresponding to the angular distance of tooth TI when. the arm I 08 again falls in the interdig-it spacev formedby the digits TI and T2 for closing the shunting contact I26 and this cycle of operation is repeated to the completion of thecall designation TENN. 15., 'i..e.;the. exchange called which while including 8 digits as shown in Fig. 2 may be formed of any number of digits desired within the capacity of the code disc especially when'a plurality of switches at difierent exchanges along a trunk line leading to the called exchange require to be operated. A call designation may be repeated in case the trunk line is found to be busy by the simple operation of key II as above mentioned.

The establishment of the telephone connection with the Tennessee central exchange ofiice is followed by the selection of the number 48 included in the call designation Tennessee 48- 2112374 above mentioned. The call designation 48 which is assigned to the telephone exchange in the city nearest to the subscriber having the telephone call designation ZR2374 is effected by the rotation of knob [21 for moving the index I23 in registry with No. 48 on the card CD which positions the arm I08 with the code disc marked Nevada 48 followed by the operation of key TI to start the operation of motor 66 for actuating the pulsing mechanism in the manner above described'in connection with the calling of the Tennessee exchange ofilce.

Upon the completion of the telephone extension from Tennessee 15-48 the connection from the'exchange number'48 is established by the operation of keys bearing the symbols ZP-2374 for operating the pulsing cam 63 as follows:

The operation of the key marked with the symbol Z operator the first letter or the call designation ZR2374 above mentioned is efiective to impart a pivotal movement to pawl 21, which looks this key in the operated position by the tension of its retractile spring 30. The movement of pawl 21 from normal shown in Figs. 5 and 7 to the position shown in Fig. 8 is imparted to the bar 32 and its arm 33 to cause the pawl 69 carried at the free end thereof topivot the switching device MC from the position shown in Fig. 7 to the position shown in Figs. 8 and 9 to cause the brushes 99 and SI to close the energizing circuit of motor 66 but prior to the energization of magnetic clutch MG for permitting the motor to reach maximum speed prior to the operation of the pulsing cam 63. The energizing circuit of motor 66 extends from the positive side of battery 18, the conductor 88, the armature winding of the motor, the conductors 89 and 92, brushes 9! and 90 on contact M0, the

conductors

89 and 19 to the negative side of battery 18 while the magnetic clutch is energized through conductor 93, the brush 94, thewinding of the magnetic clutch, the brush 94, the winding of the magnetic clutch, the brush 95', conductor 96, the brush 9'! on contact MC. the

brushes

90 and 9|, conductor 92, the armature winding of the motor 66, conductor 88, to the positive side of battery 18.

The starting operation of motor 66 is timed to occur when the pawl 21, Figs. 5 to is at its greatest pivotal movement and ready under the tension of its retractile spring 30 to engage the roller 25 carried by key Kill for holding the latter into the operated position as shown in Fig. 9. In that position the arm al of the lever member 49 as shown in Fig. 9 is positioned in the path of lug Pl0 carried by disc 45 associated with the key Klll rotating in the direction indicated in Figsfl, 8, 9 and 10.

The operation of shaft 46 as effected by the magnetic clutch MG and that of pulsing cam 63 keyed on this shaft is effective to actuate the pulsingpawl PW and thereby the pulsing contact PL, Figs. 5, 6, 7, 8, 9 and 10 once for each tooth O1, 02, 03, 04. 05, 06, 07, 08, 09 and 010 of this cam when the projection P18 of disc 45 as shown in Fig. 10 engages the arm al of lever member 40 to impart a pivotal movement to this lever member to cause its arm a3 to actuate the bar B2 for closing the shunting contact SH, Fig. 5, for negativing the operation of the pulsing contact PL upon the continued operation of pulsing cam 63 and the disc 45 for pivoting the lever member 48 to a point where its arm :14 engages the stop bar sbt to cause the movement of pawl 2'! from the position shown in Fig. 9 to the position shown in Fig. 10 for releasing the operated key Kill and for permitting the arm 39 to engage the lug 38 carried by pawl 21 to hold the latter in the operated position until disengaged by the return of key Kit! to normal position s that the holding ofthis key to the operated position by the operator will not permit the reengagement of pawl 21 with that key prior to the return of the previously operated key to normal and that of the operation of the switching device MC in the proper sequence. The pivotal movement of lever member 58 under the action of its associated disc i5causes the arm a2 of this lever member to engage the bar 62 of the switching device M0 to return the latter to normal nonoperated position as shown in Fig. 10 to open the motor circuit and thereby deenergi'zing magnetic clutch MG.

The rotation of shaft 46 from normal, as shown in Figs. '7 and 8, for transmitting the ten pulses corresponding to the digit key KID, the arm 50 keyed on this shaft engages the pin 51 best seen in Figs. 5 and 6 for rotating the wheel 5| for indicating the symbol of the key depressed, that is, key D, K10 marked operator 0 the indication wheel being held in its operated position by the pawl 54Y engaging the ratchet wheel 5| as shown in Fig. 11. Upon the return movement of key K10 to normalposition shown in Fig. 7 this key is effective to operate its associated arm 39 for releasing the pawl 21 which is returned to normal position by the tension of its retractile spring 30 which is followed by the return movement to normal of bar 32 and the pawl 60 on arm 33 in position for operating the switching device M0 by the operation of a succeeding key for actuating the pulsing mechanism as above described in connection withkey Kill.

The placing of the handset HS shown in Fig. 1 in its supporting cradle, the operation of plunger member PM best seen in Fig. 11 is effective to impart a pivotal movement to lever LV and thereby to the pawl 54Y for disengaging thi pawl from ratchet wheel 56 to permit the return of the indicating wheel 5| to normal and the transmitter is now ready for a successive call operation in cooperation with the selective mechanism or for transmitting of any local call designation or for transmitting telephone call designations to any connected country outside of the United States if so desired by added code discs.

What is claimed is:

1. A call transmitter device having means for establishing a, talking connection from an automatic exchange in a state to another automatic exchange in another state and from the called easiest state to an automatic exchange in a city in "that state, other means for connecting the telephone exchange in that city to a, telephone subscriber in another locality,"and a plurality ofmean's for indicating the call symbol of the called state, the call symbol of thec'alled city inthat state" and the call symbol of the subscriber" that city digit after digit upon the transmitting of such a call.

2. In a-calltransmitter device, means for establishing a talking connection from an auto matic telephone exchange in one statetoano'ther automatic telephone exchange .in' another state, said means comprising a set of code elements; means for selecting: one "or said code elements in saidset, a pulsing mechanism controlled by the operation of the selected code element, motor means, a switching device manually "operable following the selection'or the code 'ele'merit in said set to'cause the operation ofsaid motor, and means for controlling the operation of said switching device and stopping'th'e operation'of said elements and said p'ulsing mechanism.

3. In a call transmitter device a set of code discs, each of said discs having a group of Jsymbols marked thereon, one ofsaidsymbolsi-n said group representing automatic exchange names in difierent'states and the other symbolin said group representing automatic exchange numbers in cities in such states, a card for indicating said' group of symbols, a mechanism havingan index movable in position on thesyjmbols on said card representing the exchange names for selecting one of said code discs, a'pulsing mechanism con trolled by the operation of the selected code'disc, said selecting'mechanism being movable in position for selecting one of said numbered discs for controlling the operation of said pulsing mecha-- nism in a-successive operation, an--electri'c motor for successively actuating said selected code discs and said pulsing mechanism, a normally open contact in the energizing circuit of said motor, a

key member operable for closing said contact to cause the operation of saidmotor, and means operated by the movement of's'ai-d code disc cooperatingwith said-key member for controlling the operation of said motor.

4. In a, call transmitter, a set of rotatable code discs, a mechanism for selecting one of said discs, a pulsing mechanism controlled by the code disc selected, an electric motor, means for rotating said disc and said pulsing mechanism for transmitting a number of trains of pulses according to the selected disc, a set of numbered key members, a, pulsing mechanism, means actuated by the operation of any one of said key members to cause the operation of said pulsing mechanism according to the individual operation of said key members and switching means actuated by the movement of the operated key member for starting the operation of said motor for actuating the last-mentioned pulsing mechanism independently of the operation of the first-mentioned mechanism.

5. In a call transmitter device, a plurality of pulsing mechanisms, a plurality of clutches, a plurality of switching devices, and motor means controlled by the operation of said switches for independently actuating said clutches to cause the operation of said pulsing mechanisms for transmitting a telephone call designation in a combination of selecting and key controlled transmitting operations.

6. In a call transmitter device, a, set of code discs, a pulsing mechanism operatively associated position, a; lever l'r'iemb'er'pivbted Oil each of said 40' withsaid code discs; .a 'mecnamsm for successively selecting a number or said cue-e: discs in said-set for controlling the operation of said pulsing '7; In a call 'transmittin'g device', a plurality of pulsing mechanisms operable for establishing a telephone connection in ase'ries of call transmittingoperation's, a set of code disc's, means for selecting one of saidcodes for controllingtne operation of one of said mechanisms, a set of digit key members for, controlling the operation of the other of said pulsing mechanisms; means actuated by the operation of the last mentioned pulsing mechanism for indicating the number or the operated KEY members S11E06SSH/"61y;

e. In}, call transmitter device, a pluralit'y or" pulsingimechanisins operable for establishing a telephone connection, a set'of digit key members for controlling the operation of one ofsaid pu1siI'Ig mechanisms, apawl element for lockingithe' operated key to'nori'nal position, a bar actuated" b'ysaid pawl e1ernen t,.meahsactuatd'bysaid bar for locking the noh-op'eratedkeys intnat' pawl elements, said pulsing. mechanism having a rotat'ablej shaft, a plurality of toothed discsmounted onsaidshaft', one for each of said' locking pawl elernents for actuating the p'ivotedlev'e'r 7 member associated with the operated key for releasing the latter upon" the operation or said shaft, a shuntingcontact, means-common to all of said, pivoted lever members actuated by the movementof" the operated pawl'for controlling the operation of said pulsing mechanism, a wheel actuated by said rotatable shaft for indicating the operation of said pulsing mechanism prior to the operation of said shunting contact, the other of said pulsing mechanisms comprising a set of code elements, a pulsing cam, a mechanism for selecting one of said code elements, said selective mechanism being operable by the movement of the selected code disc for controlling the operation of said pulsing cam and a card having written thereon numbered symbols for indicating each of said selected positions, and a motor common to said pulsing mechanisms.

9. In a call transmitter device, a set of key members, a pulsing mechanism, an electric motor, a magnetic clutch operatively connecting said motor to said pulsing mechanism, an energizing circuit for said motor having a branch circuit for energizing said magnetic clutch, switching means having a plurality of brushes, a common contact for said brushes, said contact being operable by the movement of any one of said key members for energizing a number of said brushes in a predetermined extent of movement to close the circuit of said motor to start the operation thereof and in a, continued movement to engage the other of said brushes to close saidbranch circuit for-energizing said magnetic clutch for actuatingsaid pulsing mechanism.

10; In a call transmitter device 'a set of 'key members, a pulsing mechanism, an electric motor, a magnetic clutch foroperatively connecting said pulsing mechanism to said motor, an energizing circuit connecting said motor and said clutch, normally opened switching device in said circuit having a plurality of stationary brushes and a common movable contact element, means operable under control of any one of said key members for operating said switching device for causing the energization of said motor for rotating one element of said magnetic clutch, the continued movement of said switching device causing the energization of said magnetic clutch for actuating said pulsing mechanism, an indicating wheel actuated by said pulsing mechanism, a, ratchet mechanism for holding said wheel in the indicating position, and means actuated by the operation of said switching device for actuating an element of said ratchet mechanism for permitting said indicating wheel to return to normal position upon the operation of a suc-' ceeding key in said set.

11. In a call transmitter device, a set of key members, pawl like members, one for each of said key members, a lever member pivoted on each of said pawl like members, a rotatable shaft dis-- posed across said lever members, a pulsing cam and a plurality of toothed discs carried by said shaft one of said discs for each of said lever members, a pulsing contact actuated by said cam, a shunting contact for negativing the'operation of said pulsing cam following the operation of said pulsing mechanism as controlled by the engagement of one of said toothed discs with the pivoted lever member associated with the operated key member, a motor for actuating said pulsing mechanism, an energizing circuit for said motor having a, switching device controlled by the movement of the depressed key for starting the operation of said motor, means disposed in engageable relation with said lever member for returning said switching device to normal posi tion for stopping the operation of said motor following the operation of said pulsing mechanism and the operation of the pawl-like member associated with the operated key for releasing the latter,"means for locking said pawl-like member to operated positionduring the return of the operated key to normal and means carried by said key for actuating said locking means upon the return of said key to normal for releasing said pawl-like member.

12. The combination of two independently operating mechanisms forming the components of a single telephone call transmitter for controlling the operation of automatic switches by a series of call transmitting operations for establishing a talking connection from a telephone substation to an exchange in one state represented by a, name to another exchange in another state represented by a, number and from the last-mentioned exchange to an exchange in a city in that state located nearest to the desired subscriber and from the telephone exchange in that city to the desired subscriber having a, call designation represented by a group of letters and numbers,

a motor for actuating said mechanisms, and means set by the operation of one of said mechanisms for indicating said letters and numbers at each state in the transmitting of the last-mentioned call designation.

13. The combination of two independently operable pulsing mechanisms forming the components of a single telephone call transmitter for controlling the operation of automatic switches by a series of continuous trains of pulses, a motor for actuating said mechanisms, and a plurality of electrically actuated means for controlling the operation of said motor following the transmit ting of each of said trains of pulses.

CHARLES D. RICHARD.

REFERENCES CITED The following references are of record in the