US1047833A - Apparatus for automatically connecting up the subscribers of telephone-exchanges. - Google Patents

Description

J'. PET CKi. APPARATUS FOR AUTOMATIGALLY CONNECTING UP THE SUBSGRIBERS 0F TELEPHONE EXCHANGES.

APPLIOATION TILED MAR. 7, 1905.

Patentd Dec.17,191 2.

WWW

. Jar? /Ycj.

' liar/ vy J. PBTIGK APPARATUS FOR AUTOMATICALLY CONNECTING UP THE $UBSORIBERS 0P TELEPHONE EXCHANGES.

APPLICATION TILED MAR. 7', 1905.

Patented Dec. 17,1912.

1o sums-sum. 2.

v I J, PETI-GKY, APPARATUS I'OR AUTOMATIGALLYUONNEGTING UP THE SUBSCRIBERS 0F TELEPHONE EXCHANGES.

1 APPLICATION IILED HA3. '7, 1905.

- Pat ned'Dec.17,1912.

10 SHEETS-SHEET 3.

v I J PETICKY. APPARATUS FOR AUTOMATICALLY CONNEGTING UP THE SUBSGRIBERS 0P TELEPHONE EXCHANGES.

.APPLIOATION FILED MAR. 7, 1 905.

Patented Dec.17,1912.

10 SKBETS-SHBET 4.

Iiifiiiillllllllllllllllt liar/ 6V J. PETIUKY. APPARATUS FOR AUTOMATICALLY CONNECTING UP THE SUBSGRIBERS OF TELEPHONE EXCHANGES. v

APPLICATION FILED MAR. 7. 1905. 1,047,833, Patented D60. 17, 1912.

10 SHEETS-SHEBT 5.

A JM/ E172 v J PETIGKY. APPARATUS FOR AUTOMATICALLY CONNECTING UP THE SUBSORIBERS OF TELEPHONE EXGHA NG-ES.

. APPLICATION TILED MAR. 7, 1905 1,047,833. Patented Dec. 17,1912.

10 SHEETS-SHEET 6 iZ/ary: 7 m\m J. PETIGKY. APPARATUS FOR AUTOMATICALLY GONNEGTING UP THE SUBSGRIBEES 0E TELEPHONE EXCHANGES.

APPLICATION rum) MAR. 7, 1905.

Patnted Dec. 17,1912.

10 SHEETFSHEET 1.

, WWI/mm J. Pinei. APPARATUS FOR AUTOMATIGA LLY CONNECTING UP THE SUBSGRIBERS 0P TELEPHONE EXCHANGES.

APPLICATION FILED MAR. '7, 1905.

Patented Dec. 17, 1912.

10 SHEETS-SHEET B.

v Q I J. PETICKY. APPARATUS FOR AUTOMATICALLY OONNECTING UP THE SUBSGRIBERS OF TELEPHONE EXCHANGES.

APPLICATION FILED MAR. 7, 1905.

A Patented Dec. 17,1912.

10 SHEETS-SHEET 9.

NM MM 3N J. PETIGKY. v I APPARATUS FOR AUTOMATIC-ALLY CONNECTING UP THE SUBSGRIBERS 0F TELEPHONE EXCHANGES.

APPLICATION FILED MAE. '7, 1905.

Patented D60. 17, 1912.

10 SHEETS-SHEET l0.

/0Jf7 R QM mg llr fimmar WWW UNITED STATES PATENT OFFICE.

JOSEF PETICKX OF PRAGUE, AUSTRIA-HUNGARY.

APPARATUS FOR AUTOMATICALLY CONNECTING UP TH E SUBSCRIBERS OFTELEPHONE- EXCHANGES.

Specification of Letters Patent.

Application filed March 7, 1905. Serial No. 248,834,.

Patented Dec. 17,1912

To all whom it may concern: Be itknown that I, Josnr PiirroKi'r, a subject of the Emperor of Austria-Hungary, and resident of Prague, Austria-Hungary, have invented certain new and useful Apparatus for Automatically Connecting up the Subscribers of Telephone-Exchanges, of which the following is a specification.

This invention automatically connecting up the subscribers in telephone exchanges.

Said means consist of apparatus for each subscriber, or each call oflice, and connect ing-up apparatus in theexchange. For each subscriber there are two call apparatuses, one fitted alongside his telephone and one fitted in the exchange, so there are altogether as many sets of call apparatus as there are subscribers or call stations, while p and breaking of which sixth connecting-up the number of connecting-up apparatuses in the exchange is determined by the largest number of conversations estimated to be likely to be carriedon simultaneously.

The subscribers call apparatus serves for determining and making particular contacts for the electric current, through the making in the exchange certam movements of the relative apparatus in the exchange- -and of the connecting-up apparatus-are brought about. With the help of any one of the call apparatus in the exchange,' connection can be made with any one of the connecting-up/apparatus, and thus any two subscribers can be connected up. As, however, different connections have continually to be made, and the connectingup apparatuses are engaged therefore intermittently, the call apparatus in the exchange is designed to automatically discover a disengaged connecting-up apparachange call apparatus makes connection;

with the eleventh connecting-up apparatus; but if in the meantime, for example, the apparatus is set-free, then the next or twelfth connection would be made through thisdisengaged sixth appara tus. The connecting-up apparatus discovers automatically the required subscrib'e'rs line by his number and makes the'desired con has reference to means for accompanying drawings,

ments of the installation in a different nection'. Each one of the three apparatuses s designed to automatically return to its normal or disengaged position on the conclusion of a conversation, so that new connections can be made. The construction of the apparatus employed may vary. I have illustrated in detail and'dlagrammatically one form in the in which? Figures 1"to 6 show one form of subscribers call apparatus:

view, Fig. 3 a front view, with the front of the case in which the apparatus is housed removed, Fig. 4 a vertical section, and Figs. 5, 6 and 7 show the means for putting. this apparatus into and out of operation, 'Fig. 5 being a side view, Fig. 6 a front view, and

Fig. 1 being a backview of the contact plate, Fig. 2 a front Fig. 7 being a diagrammatic view partially in section of a portion of the mechanism shown in Figs. 5 and 6. Fig. 8 is a side view of a portion of the selecting mechanism; Fig. 9 is atop plan view of the mechanism shown in Fig. 8. Figs. 10 and 11 are end views in detail of portions of the mechanism shown in Figs. 8 and 9; Figs.

12, 13, 14, 15, 16, 17, 1s, 19, 20, 21, 22 and 24,

are views in detail of the rotating selecting wheels, contacts, and connecting mechanisms, shown in variops positions in diagram, and Figs. 23, 25 and 26 showthe entire station installation as the same appears when viewed from various points, while Fig. 27 is a fragmentary view showing eleoperative position. Figs. 28 and 29 show diagrammatically the various circuitwires and connections. a

This subscribers call apparatus consists of operating mechanism 1, on the spindle 2 of which an arm 3 is secured which carries on its end three spring cont- acts 4, 5 and 6 which slide over a fixed plate 7, made of insulating material and this arm 3 is actuated at theproper momentby a spring or other suitable motor of any desired form, which it has not been deemed necessary to show herein. contacts are let in, which contact-s are arranged in particular groups.

Commencing from the normal or" disengaged. position of the arm 3, shown 1n Fig. 1, and following the direction of movement of the latter, the first contact group, of, for example fifteen to twenty contacts, is indi- In this plate, a number of cated by the numeral 8, which group serves to actuate the relative call apparatus in the exchange so as to discover a disengaged connecting-up apparatus. Then follow four contact groups, 9, 10, 11, 12 each comprising eleven contacts, of which always the first 9, 10, 11, 12, serves .to actuate the contactdevice A, herelnafter described, of the connecting-up apparatus (Fig. 23), while the other ten contacts 9, 10, 11, 12 serve toactuate the contact devices B, G, D and E of said connecting-up apparatus, that is to say, for making the connections with the number called. Then there are two contacts 13 by means of which the contact device A is displaced two teeth. In the other half-circle of this plate, a contact 14 is disposed which serves to make the connection for speaking; then there follow four contact groups 15, 16, 17 18, each comprising twelve contacts, of which those marked 15 16, 17, 18, serveto bring about the movement of the contact device A, while the others 15, 16, 17, 18, serve to actuate the contact devices B, G, D, E. Then follow two contacts 19 for displacing the contact device A; behind these two contacts 19 a special contact may be provided whereby direct connection with the exchange may be established. The last contact in the circle, 20, serves to permanently connectthe subscriber with the exchange for the purpose of receiving calls from other subscribers.

The contacts 4 and 5, which are connected together, 10, 11, 12,

12, 13, 15, 15, 16*, 16, 17, 17, 18, 18, and

19, and the contact 6 slides over i the contacts 14 and 20, and the electric current is conducted to these contacts by known means from rings and lamellae fixed on the spindle 2. The contacts referred to, 9, 10, 11, 12, through which the contact devices B, C, D and E are actuated in discovering the number of the subscriber called, may be covered as required by means of insulated shields 21, 22, 23, 24, whereby a displacement of the contact devices B. C. D. E. by as many teeth as there are free, i. e. uncovered, contacts remaining may be accomplished. In a similar manner, the contacts -15, 16, 17. 18, through which the contact devices B. C. D. E. are operated to bring them back to their normal or disengaged positions, may be covered by insulated shields 25, 26, 27, 28, which latter are so coupled in pairs by means of the rotatable arms 29 mounted on the axis of the apparatus that by uncovering a predetermined number of contacts in the groups 9, 10, 11, 12, a like number of contacts in the groups 15,16,17,18 will be covered, the result of which is that the contact devices B. C. D. E. which have been displaced or moved to correspond with a particular number, will be turned relatively to the number of teeth remaining between that position slide over the contacts 8, 9, 9, 10,

and'the normal or disengaged position, z'. e. to the end.

From' the arms 29, hand levers 30 provided with springs project the subscribers apparatus and on this front cover a numbered index (Fig. 2) with groups of figures from 0 to 9 is applied, of which the first on the left is for thousands, the second for hundreds, thethird for tens, and the fourth for units, so that any number from 0 to 9999 can be made up.

If the apparatus is to be designed for a larger number of subscribers than 10,000, an extra contact is provided in the group 9, whereby the total will be increased by 1000; in the connecting-up apparatus corresponding alterations will bemade.

By placing the hand levers 30 on various figures of the index, the shields 21, 22, 23, 24, take up such a position that they always uncover one more contact than the hand lever indicates on the index, because there-is also a contact for the 0. If for example the subscribers number 2458 is to be called, the hand levers will be moved to the corresponding figures on the index, whereby three contacts in group 9, five contacts in group 10, six contacts in group 11,- and nine contacts in group 12 will be uncovered, the result of which will be that the contact device B will be moved three teeth, the contact device C five teeth, the contact device D six teeth and the contact device E nine teeth. Simultaneously, a like number of contacts in the groups 15, 16, 17, 18 will be covered, so that in the order named 8, 6, 5, and 2 free contacts remain, by means of which the contact devices B. C. D. and E. will be moved back into their normal or zero position.

In the drawings 0 has a particularcontact position, so that when a number having a 0 in it is called up the relative apparatus moves forward one tooth on setting the hand lever 30 on the relative 0. This arrangement may however be dispensed with and instead of it the contact devices may normally stand on 0, so that when a number.

with a 0 in it is called, no movement of the contact device is necessary.

The arm 3 is held in the zero position by through the front cfmeans of the adjustable stop 31; if this stop be moved by pressing in its spindle 32 said arm 3 will be set free and will rotate in the direction of the arrow 33, through an angle of 180, whereby the connection with the subscriber called up will be made and the arm will be brought to a stand by means of a special stop device. This stop device consists of the lever 34 (Figs. 5, 6 and 7) which is rotatable on the bolt 35 and carries a double stop which comprises an upper tooth 36 and a lower tooth 37 the latter of which is disposed sidewise. When the arm 3 reaches this tooth 36 (position 3) it is held thereby and the apparatus thereby stopped.

If, however, the lever 34 be moved in the dil rection of the r a little farther, and will the tooth 37. 1f the lever34 be moved in 5 the direction of the arrow 39, the arm 3 will be set free and will continue to move inthat direction. These two movements of the lever 34 are attained by the aid of the lever 41, which is provided with an arm 40 and is mounted loosely on the same spindle, which lever 41 carries the three usual contacts and on which the receiver is hung. If the receiver is'removed for the purpose of speaking, the lever 34 is moved (Figs. '5 and 7') so that the arm 3 can move a little farther, While, when the conversation is finished, the receiver is again hung up, the said lever34, turns in the reverse direction, so that the .arm 3 is again set free and in its further progress makes the necessary contacts for bringing back the whole of the apparatus to its zero position, until, finally, it is brought to a standstill by the stop 31.

The exchange apparatus, which is shown in Fig. 8 in front view and in Fig. 9 in plan view, comprises a contact device and a lever mechanism. The contact device comprises the ratchet wheel 42, in which a pawl 43 engages, which latter is moved by an electro-magnet 44 and thus turns the ratchet wheel. On the spindle of the wheel 42, a disk 45 this disk there is a row of five contacts 46 which slide over a fixed contact disk 47. In this there are fifteen to twenty contact rows 48, 49, 50, 51, etc., their number beingaccording to the number of the connecting-up apparatuses, that is there are as many contact rows as there are connecting-up apparatuses in the exchange. The number of these contact rows corresponds to the number of contacts 8 in the subscribers call apparatus.

The electric current is conducted to the movable contacts 46 by means otlamellae and; rings as in the case of the subscribers call-apparatus. On the lower end of the double'armed lever which. rotates the ratchet wheel 42 thereis a cont-act 52 which makes contact with the fixed contact. when this lever is attracted by the electro magnet.

he lever mechanism of the exchange apparatus, of which Figs. 8, 9 and 10 show a front, plan, and side view respectively, and Fig. 11 shows a front view'at the moment of its operation, comprises a lever 54, which is actuated by an electro-magnet 53 and on the upper end of Which there are five contacts 55, 56, 57,58 and 59, while its lower end is. provided with a contact 60. Opposite the two highest contacts 55, 56, there is a second movpble lever 61 with two contacts 62, 63. opposite the three middle contacts 57, 58 and 59.; is a fixed bracket 64 with three contacts 65, 1

then be stopped by arrow 39, the arm 3 moves (F 68, while the 'of the whole loose on the levers 54 and 7 whereby any backward movement whatever provided with contacts is fixed. On p 7 6. When the lever When the lever 54 is at rest 1g. a connection is made between the contacts 56, 63, and the'lower contacts 60, contacts 55, 57, 58 and 59- are out of contact with the contacts 62, 65, 66, 67, and thus until after setting. in operation apparatus, a disengaged connecting-up apparatus has been connected. When the lever 54 is attracted by the electro-magnet 53, the four remaining upper contacts 55, 517, 58 and 59, make contact with the contacts 62, 65, tacts 56 and 60 leave the contacts 63 and 68. At this moment both levers 54 and 61 fixed contact 68.

are retained by means of a lever 69 which isprovided with two stops which lever 69 lies '61 when at rest,

of the lever 61 is prevented, while'a slight movement of the lever 54 is permitted after shutting ofi' the current in the electro-magnet 53 so that then both levers --54 and 61 remain in the position shown in Fig. 11. In this position the upper contacts 55, 62, and 56, 63, and the lower contacts 60 and 68 are out of contact while tacts 57, 58 and 59 are in contact with 65, 66, and 67. When thereafter the electrolnagnet -70 attracts the lever 69, both levers 54 and 61 are returned to their original or zero position.

The exchange apparatus described serves as already stated, for discovering disengaged connecting-up apparatus which is accomcomprises a lever 71 which is actuated by an electro-magnet '74, and is provided with two contacts 75 and 76 at its upper and one contact 77 at its lower end Opposite the middle contact 76 there'is a second niovable' lever'72, which isprovidedlwith a countercontact78; opposite the upper contact 75 on the lever 73 is a counter-contact- 7 9 and opposite the contact 77 a fixed counter-contact 80. The contact 7 5' is coupled with the contact 71 is attracted by the electro-magnet 74, the lever 72-moves, the under contactlis broken, the lever 73 springs in and holds the lever 72 by means of its stops, while the lever 71 moves back a little after the current is shut ofl in the electro-magnet 74 until coiitactis again made between the contacts 7 5 and 7 9. When the lever 7 3 is drawn to the elect-ro-rnagnet'81- both levers 71 and 72 move back and contact is again made between the contacts 77 and 80.

The contact 79 connecting-up apparatus is, as shown diae1, 64., and ea on the lever 73 of the first 66, 67, while the -congrammatically in Fig. 29, connected with the-contact 75 of the second apparatus, the

-. contact 7 9 of the second apparatus with the 13 23 in plan view,

The connecting-up apparatus, which is shown in Figs. 14-27 consists of five con-' tact devices A. B. C. and E. and a predetermined number of contact rods 82. The

contact device A. (shown in detail in Figs. 20 to 22) serves for bringing about the movements of the contact devices B. C. D. and E. and of the contact rods 82, and that in such a. manner that it connects up the current to the relative electro-magnets. This contact device A. comprises a fixed disk 83, shown in Fig. 21 in a view from below and in Fig.

and a movable disk or sector 84, shown in plan in Fig. 22, which is disposed below said fixed disk and is pro .'ded with ten contacts 85, of which always two neighboring contacts are coupled in pairs and alternately make the connection e tween the contacts in the upper disk. These consist of the contact groups 86, 87, 88 and 89 for the actuation of the electromagnets contact devices B. C. D. and E. 'n selecting the number of the. subscriber called up, of contact groups 94, 95, 96 and 97 for the actuation of the same electro-magnets for moving the contact devices into their zero position, further, of two contacts 98 and 99 be longing to the contacts 8689 already referred to, of the contact 100 for making the connection for speaking, of the contact 101 for connecting up the current to the electromagnet 81 or 70 for the purpose of return-- ing the lever mechanism of the exchange call apparatus and of the connecting-up ap paratus to its zero position, 102 and 103 for moving-the rod 82 for making the connection for speaking and for returning the same when the conversation is finished, and finally of two contacts 106 and 107 which come into operation when a subscriber is already engaged when someone else wishes to speak with him, these last mentioned contacts serving also to prevent any other subscriber overhearing the conversation being carried on. For the purpose of making directconnection with the exchange, an extra contact maybe provided on the disk 83. The various contacts referred to in the disk 83 are arranged in several quadrants or sectors and the like operating contacts in the several-quadrants are connected up with each other. To each of the contact groups described belong contact rings 108, 109, 110, 111 and 112. The disk 84 is moved by the electro-magnet 113 by means of a ratchet wheel 114 and a lever, on

which latter a contact 115 is fixed which on the actuation of the electro-magnet makes the connection between the contacts 116.

The other contact devices B. C. D. and E.

90, 91, 92 and=93 for rotating thevice C is provided with contacts of the contacts serve for selecting the number of the subscriber called up, the contact device B. serving for thousands (or higher), C. for hundreds, D for tens, and E for units. Eachof these contact devices consists of a disk 117,

or 118, 1,19, 120 in which a-certain-number of contacts are let in, and of a movable disk or sector 121, or 122, 123, 124mounted below said disk and provided with contact groups of four contacts each, of which each two neighborin contacts are'connected up in pairs and make alternately the connection with the contacts in the fixed disk. Each movable disk is moved or rotated by means of a lever actuated by the electro-magnets- 30 the contact device B. from the electro-magnet 90, C from 91, D from 92 and E from 93.

The fixed disk 120 of the contact device E, which is shown in Fig. 15in a view from below and in Fig. 23 in plan view, carries one hundred contacts 125, which are arranged in groups of ten, and ten contacts 126, of which each one belongs to one of the groups 125 and is connected up with the former by means of movable contacts 127 (Fig. 25).

In addition, a like number of similarly arranged contacts 128 and 129 are carried by the disk 120 and contacts 130,by the movable disk. similarl to E, the contact deand 132 and contacts 133, 134 and 135. In addition, this device has two contacts 136 and 137 which are connected up with thezero contacts 130 and 133 of the first group.

The contact device D carries two groups 138 of eleven cont-acts each and the contact ring 139, which are connected up by movable contacts of any suitable sort, (not shown), and a like number of similarly arranged contacts 141, 142 and 143. The contact device B is furnished with contacts arranged n a simi lar manner to thoseon D and carries the contacts 144, 145 and 146, and the contacts 147, 148 and 149. The contacts 128'on the contact device E,and the contacts ohQ-O of the first connecting-up apparatus are progressively connected up with the like contacts of the second, third, fourth, etc., connecting-up apparatus.

The contact rods (Figs. 23, 26 and 27) serve for the actual connecting up of the subscribers for conversing. Each of these rods is slidably arranged in a fixed frame 150 and carries one hundred contacts 151 to which the wires of the individual subscribers are connected and which by means of the relative contacts make the connections with all the connecting-up apparatuses, so that, accordingly, the number of hundreds of subscribers to the exchange represents the number of contact rods of the connectingup apparatus. Forexample, for3000 subscribers 30 rods are necessary. To each of these contact rods. belong electro-magnets 104 and 105. Under each contact rod there are one hundred fixed contacts 152, which a'contactrod is in its zero "there is no contact'between I and 152, but when the current is connected are connected u with'each other in such a manner that, ibr example,'the first fixed contact 152 of the first rod 1s connected up with the hundred-and-first contact of the second rod, then with'the two-hundred-and up to the electro-magnet 104, the rod is displaced so that it makes simultaneously one 'hundred'contacts between 151 and 152,'in

which position the rod is retained by means of the hook 153 until said hook'is raised by' means of the 'electro-magnet 105.

the electro-magnets 104 connect 1 v Onleach contact rod a connection-contact 1-54 is arranged o posit/ea counter-contact 155 fixed on the. rame. The contacts 152 (Figs. 23 and 28) are connected up in order with the contacts 125 on the contact device E, and the contacts 126, which belongto the whole group of ten last contacts, are connected up in order'with the single contacts 138 of the contact device D. In like manner, with the contacts 130 on the contact device C and the contacts 131, which belong'to the whole contact group 130, make the connections-in order-with the single contact 144 on the contact device B. This connection is'shown in Fig. 23. The contact 138 corresponding to 0 on the contact device D is connectedup with the contact 126 which pertains to the first of thecontact groups 125, 2 e. from 0 to 9 on the contact device E and controlled thereby, the contact-138 in the second row corresponding tounits on the contact device D is connected ;up with'the contact '126 of the second-contact group 2'. e. fromlO to 19, and

so on. Accordingly the sixth in the row, the

corresponding contact 138 to the number 5, is connected up with that contact 126 which belongs to the sixth contact group, i. e. from 50 to 59. Thereby the contact 125 corresponding to the number 8on' the contact device E, isconnected up afterthe disk l24 is rotated which contact is in group, from the sixth 50 to 59. This corresponds to the fifty-eighth contact on the contact device Band on allthe contact rods (Fig. 23).-

A like arrangement is made in the case of the contact devices B and G. Take for example the third contact 144 'on the contact device B which corresponds to the number p two which'is connected up with that contact which belongs to the third contact group 130 i. e. from 20 to'29. 'By this the contact on the contact device C corresponding to the number 4 comes into operation on the.

fot'ation of the disk 122, which'contact he 55 ongs to this third group and which corre- (Fig."23) 1 When vfrom the battery 15 earth to ground-(3r "that the word circuit will be closed by e contactdevice 0, the electro-magnet 104, and the twenty fourth contact rod. When the circuit energizing the magnet ,104 is closed the twenty-fourth contact rod on which are'the contacts 2400 to 2499 as shown in Fig.- 26 'is slid so as to enable its fiftyeighth contactto make the connectioncorrespending to the subscribers number 2458.

The whole of the apparatuses described are connected up with each other in the manner shown diagrammatically in Figs. 28 and 29 with the result that they operate; as will now be described.

en a subscriber, for example wishes to places the pointer carlever 30 on the relative call'up. No. 2458 he ried by the hand numbers on his index. As has been already described there will remain in the contact group 9 three, in group '10 five, in group 11 six and in 'grou 12 nine .free contacts; simultaneously a ike number of contacts in the groups 15, 16,17 and 18,, are covered up so that, in order, eight, six,'five and two free contacts. remain. Thereupon the spindle 32 is pressed in, whereby the'sto 31 is displaced; this sets the arm 3 free whic consequently moves in the direction of the arrow 33. By this movement the contact 4 makes connection With the'first contact of the group 8 whereby a circuit is established contact 56, contact 63, magnet'44, subscribers call ap aratus including contact 4, ground 0', t rough the and thence back to the battery 157. This circuit is shown by the connecting wires being marked 156- and will be hereinafter referred to as the circuit 156,

slponds with the twenty-fourth contact, on t it being understood that certain parts of this circuit also -form vparts of other circuits so as hereinafter used referstbfthe complete route traversed by a current in performing a specific operation.

Thereby the armature ofthe electric-magnet 44 is attracted and the ratchet wheel 42 and the disk wheel 45 are rotated one tooth so 7 I that the contacts 46 on the next following contact row on the disk 47, for exam 7 make contact with the contacts 48. en these contacts are in connection With'a disengaged connecting-up apparatus, the circuit through the connecting up apparatus, here inafter referred to generally as the circuit 158 and indicated by that reference numeral on the drawing is closed. The circuit 156 will simultaneously be broken as described below. finding] a disengaged connecting-u apps. ratus will be understood from the diagrams matic representation of-the various connec This automatic searching for and tions shown in Fig. 29, andhereinafter explained. Presuming the first connecting-up apparatus to be disengaged the circuit: 158

through circuit 156 andthe bringing tothe action of the currentgether of the contacts 52, which circuit 158origin'ates'in the current in necting-up a circuit 158 will which circuit had tromagnet 53, contacts 46 and 48, electromagnet 74, and contacts 78 7 6 and 7 5. The electro-magnets 53'. and 74 attract and draw back their armatures whereby contact isbroken between the contacts 56 and .63, so that on further movement of the arm 3 over the'contacts 8 the circuit 156 will be broken,

I the wheel 45 thus remaining stationary and all further currents (from the contacts) act directly upon this disengaged connecting-up apparatus. apparatus is not free, 'L e. when t e contact 76 of this apparatus is not in circuit, the not be closed, the current in actuated the armature of the electro-magnet 53 and prevented the new circuit 156 being closed, but on the movement of the arm 3 over the second contact of oup 8, the circuit 156 ,will again be closed. wheel 42 will bev and thereby the ratchet rotated a further tooth. Now the contacts 49 which correspond with the second connecting-up apparatus come into play.. If this apparatus be freethe circuit 158 is closed (the path of the current being shown in dot and dash lines in Fig. 29), the current in which circulates from the battery 157 through the contacts 52,-electro-magnet 53, contacts 46 and 49- of the exchange apparatus, elect-ro-magnet- 74.and contacts 78 .7 6 and 75-of this second connecting-"up apparatus and contacts 79 and 75 of the first conapparatus. Thereby the arthe electro-magnet 53 of the exand that of the electro-' magnet 74 of the second connecting-up apparatus' will be actuated, whereby connection between the contacts belonging thereto 56 and 63 will be broken so that the further passage of current in the circuit 156 and mature 0 change apparatus rotation of the wheel 45 will be stopped. In

this manner it can be seen that those of the subsequent connecting-up apparatuses are free or disengaged the lever mechanism of which is in its zero posltion or the contacts 76 and 78 of which are in touch. p

- When "a disengaged connecting-up apparatiis has thus'been found and the arma turesof., the electro- magnets 53 and 74 have been actuated, thelever 5.4'takes up the position shown in. Fig. 11 so that continuous touchbetween the contacts 57, 58 and 59, and 65, 66 and 67 is maintained When therefore the cont-act 4 in the subscribers apparatus is brought over the contact 9, a circuithereafter called 159 is closed, the current in which circuit circulates from the battery 157 through the electro-magnet 113, in connection wi h the contact device A, contacts 49 and 46, contacts 58 and 66, contacts 9, contact 4 on the arm 3 ground G, ground G and back to the battery. Therethe battery 157 If however the con ecting-uptooth, this recurring .as often as there are thereupon the contact oy the armature of the electro-magnet 113 will be actuated, the disk of the contact device A will be rotated one tooth, and the cont-acts 86 will make the connections for the actuation of the contactdevice B (161 Fig. 23). Thereuponthe contact 4 comes in contact with the first, e. the'O contact of group 9, whereby a circuit hereafter known as the circuit 173is closed, thecurrent in which circulates from the battery 157 over the contacts 108, 85, and 86, in the contact deviceA, the electro-magnet 90, the

' contacts 98, and 109 in the contact. device A, the contacts 49. and '46 in the exchange appa. atus, the contacts 57 and 65, the relative contact 9 onthe subscribers call apparatus,.the contact 4 ground G, ground G, and back to the battery. By the action of the current the armature of the electro-magnet90 will be actuated, whereby the contact device B or its disk 121 will be rotated one tooth on to 0. Through the next contact in group 9, the disk will be rotated another tooth on to 1. Through the further contacts the disk will be actuated each time by one free contacts. in this group 9., accordingl when the disk has been actuated three teeth it will indicate two thousand.- Thereupon the circuit 159 is closed by the instrumentality of the contacts 10, the current actuating anew the contact device A so that it is moved a second tooth (162 Fig. 23), whereby the connection. of the contact device C with the electro-rnagnet 91 is made. When 5 reaches the first of the contacts 10. the'circuit hereinafter called the circuit 174 and indicated by the numerals 174 is closed the current in which circulates as in circuit 173 with the difier ence however thatit passes through the contact 87 and electro-magnet 91, whereby the contact device 0 is moved one tooth on to 0.

Through, the next contacts 410 the contact device C is further. rotated being moved as many teeth as there are uncovered contacts in the group 10, accordingly, asv in the example already given, by five teeth, which represents-four hundred. Then the contact 11 comes into operation and through it .the

circuit 159 is again closed so that the'contact device A is rota-ted'a third tooth (163 23), whereby the connection for the actuationf of the contact device D is made. Whenthe contact 4 engages the first of the contact group 11, the circuit hereinafter called the circuit .175 and indicated by the numera1's 175 fis closed, the current in which flows along the path taken by the current in the circuits 17 3 and 174, except that it passes through the contact 88 and the electro-magnet 92; the contact device D is rotated by as many teeth as there are uncovered contacts remaining in the'group 11, accordingly in the present instance by six teeth. (Five 7' units. Thereupon described, contact after explained.

the subscriber called, is made.

3 comes against the tooth 36'and'is scribers call apparatus,

tens) .a pairof normally 4 are arranged to tro-magnet 105' I contact device A through the circuit 180 (or 181) Then the contact 12 comes into. play for'the circuit 159, the contact device A is rotated a fourth toot-b164, the circuit. hereinafter called the circuit 176, and indicated by numerals 176,-the current of which flows along the path. common to the circuits 173, 174, and 1 5, and through 89 and 93,

the contacts 12 so that the moved by as many teeth as there are uncovered contacts remaining in the group 12, accordingly in this example, by nine teeth, which corresponds to eight the contact 4 makes con-' tact with the first of the contact grou 13, the circuit 159 is closed, the contact device 'A' is rotated a fifth tooth, 165, and closes the circuit hereinafter called the circuit 177 and indicated by the numerals 177,'the current inwhich circulates from thebattery through closed contacts 178, which be opened by an 'elect rocircuit hereinafter 'to be magnet 179 in a v 147, contact 144, contact 131, contact 130,- already found (or in the I 25 case of a smaller; number the-none hundred, through the contacts 136) to the contact de vices B and C, the electro-magnet 104 which 1 corresponds with said contacts 130 (or 136), and the contact 102 and ring 111 in the contact device A and thence back to .the battery 157. The magnet 104 corresponding to the twenty-fourth contact rod is energized and" the rod moved, the rod bearing'the cont-acts 2400 to 2499, whereby communication with the desired subscribers number is obtained. Simultaneously the hook' 153 .falls into the tooth ofthe displaced contact-rod, so that the latter'isiretamed thereby until the elecraises the hook out of en-' gagement, This takes; place only on the conclusion of the conversation" as herein After 7 this the contact- .4 engages. the second contact 13,-whereby the is rotated a sixth tooth, 166, and the connection 'for'speakingwith.

Thereuponthe arm held. The subscriber calling up signals The cur rentin this circuit, commencing with earth,

flows through the telephone apparatus ofthe calling subscriber, by the switch S, and passing successively. through the bell 6, con act 0, contact 0, fork f, and out to contacts 6, and 14, on said sub contacts 57 and on the lever mechanism of the exchange apparatus,'contacts 46 and '49, contacts 109, and in the*contact device A, thecontacts 138 and 125 corresponding to the par? ticular number on the contact devices-.1) and E and the connection in the contact rod 82.' Here the current flows over into the 'app'aratusof the subscriber called (circuit 181,

the current entering 66 shown in Fig. 28 in dotted lines) through tooth 37. Then conversation can, take place. j

-must be mad the contacts 60 of the lever mechanism of the exchange apparatus, the contacts 20and 6 of the subscribers call apparatus (as the arm 3 there stands in its zero position), the telephone and to earth. On the caller re,-

ceiving the reply signal from the subscriber called, both subscribers remove their receivers, whereby the arm 3 of the callers' call apparatus is set free and moves a little farther until it comes in contact with the The circuit being that exterior to the subscribers tele hones over. which signaling took place, tlie instruments being brought into circuit by the removal of'the receiver 1', from its hook whereby the circuit is closed through the contacts a? and c. v The current from thesubscribers call apparatus-thus passes from contact 4, throughreceiver' r, secondary of, the transformer T, switch S, to ground G. At the same time alocalcircuit is established from" the local battery', LB, through transmitter d, primary-of the transformer T, contact a, fork 1, contacts,

switch S, and arm ,199, thence to the bat- -tery LB.

Should another subscriber desire tocall, up the subscriberwho is already engaged, the relative'contactrod in that 'connectmgthrough which the connection e, cannot be actuated. This second caller'sets-his call apparatus onthe desired number; The relative exchange ap'-, paratusseeks out another connecting-up apparat us in which the contact devices B, C, D, and-E, rotate'similarly to the contact first connecting-up apparatus.

up apparatus,

devices in the =But thereby "another circuit '182 (or 183) i is closed the, current in which originating in circuit'183 (shown in dot and dash lines in Fig. 28) from-the battery 1.57 flows from the second connecting-up apparatus through the electro-magnet 179,; contacts 106, 85 and 112 in the contact device A, contacts 142, 143a-nd 141 in the contact device D, contacts 129,130 and 128 in the contact device E, and afterward flows. over through. ;the,

of vthe innerf rings in the contact devices E and C of all te ioo ioa

instrumentality. of-the connection described between all the contacts connecting-up apparatuses from the contact device 0- of this second paratus into the relative and 128 ofthe contact'deviceE' of the first (engaged) connecting up apparatus, where the current (now as circuit in full line) flows through the contacts 141, 143 and 142 in the contactdevice D,,con- .tacts 112, 85and 106 in the contactdevice A, contacts 148, 149 and 147 in the contact de- 1 .vice B, contacts 134, 135. and 133 (o-r137) of the contactldevice C, to make thecon nectionbetween the contact devices 0 of connecting-up apall the connecting-up apparatuses back into" A the second connecting-up apparatus,-where contact 129, .130

v 126 183 indicated it again flows in circuit 181 (indicated by contacts that the relative contact rod bearing the contact 94, '85 and 99.

contacts 240042499 does not move and the connection with the subscriber called up is not made, whereby also it is rendered impossible for anothersubscriber to overhear the conversation between the two subscribers who are connected up.v When, after the conversation is finished, the calling-up subscriber hangs up his receiver, the lever 34 takes up its original position whereby the arm 3 is set free and moves through its second half-circle. I

On the contact 5 engaging the contact 15"., the connection with the circuit159 is reestablished and thecont-act device A is thereupon rotated one tooth more, the seventh .(167 Fig. 23). Hereby the connection with the elect-ro-magnet 90 is made through the On the contact 4 passing ver contact 15, circuit '17 3 is closed, and .the ntact device B is thereupon rotated as many teeth as there are uncovered contacts remaining in the group 15 (in this case eight teeth), whereby this contact device is brought back to its zero position. After each further actuation of the contact device A by one tooth, that is the ei hth (168, contact 95) the ninth (.169, 96) an the tenth I 170, 97 the other contact devices are rotate one after theother, C six teeth, D five teeth, and E two teeth, and thus are brought into their zero positions. In Fig. 23 these zero positions are indicated by dot and dash lines. When the arm comes to a stand over the first of the contacts 19, the contact device'A is rotatedby the eleventh tooth (171), whereby connection is made with circuit 184, thecurrent in which circulates ,from' the battery 157 through the electro-magnet 105, contacts 155 a and 154, and contact 103 in the-contact device A. Therebythe hook 153 is raised out of the tooth of the contact rod andthe latter ,is returned to its normal position by the spring 185. On the .further movement of the arm 3 over the second of the contacts 19,

the contact device A. is rotated anothertooth, the twelfth. (I72). "Hereby the circuit 185 is closed, the current in which circulates from the battery through the electromagnet 81, contacts 101, 85, and 110, and contacts 116 by the electro-magnet 113, whereby: the, electro-magnet 81 attracts the lever "73. and the levers 71 and 72. return to app 3 in its further movement.

- pressed agalnst their original position. At the same time the circuit-186 is closed by the contacts -77, 80, coming together, the circuit circulates from the battery through the contacts 59, 67 by the-lever mechanism of the exchange call-apparatus,the electromagnet 70,00ntacts 49 and 46 on said apparatus, and contacts 77, 80 by the lever mechanism of the connecting-up apparatus, Hereby the lever 69 is displaced, setting free the levers 61 and 54, which return to their original positions. On the contact 20, the subscribers callappae ratus isbrought to a standstill by the stop 31. In this way all the apparatuses are brought back into their original positions.

All the contacts 48, 49, 50, etc., of the first exchange apparatus are-connected up current in which the arm 3 arriving at. I

with the like contacts '48, 49, etc., von thesecondand on all the others in order, so that the currents sent from the call-apparatuses of all the other subscribers flow through the said .connection to the (first) exchangecall apparatus, which has the described connection with all the connectingup apparatuses, and from here to the disengaged connecting-up apparatuses, which in like manner are sought out by means of the relative exchange apparatus.

Adjacent tothe lever 54 by each apparatus, is actuated by the currentin the-electromagnet 188. This is provided in case the contacts 46. of, two or more exchange call apparatuses should simultaneously or almost contacts 48 which, asalready explained cor-. respond to one and the same connecting-up aratus. In thiscase the circuit 189 or 190, (Fig. 28) will be closed, the current in which flows through the electro-magnet 188 by the exchange apparatus referred to, so that only that lever 54, the electro-magn'et 53 of which is first. energized is actuated The lever 187 of this apparatus is thereupon the lever 54, while the other. levers 54, the electro-magnet of which may have been energized-an instantlater 81'6' prevented from moving owing to this actuation of the lever 187.

Having now. fully described my said invention' what I claim and desire to secure by Letters Patent is a v 1. An automatic telephone systemjicomprising subscribers call mechanism,

of line connecting-up apparatus'atthe exchange,

under control ofthecall mechanism, the latter acting automatically when set forthe called number and released to thus control uninterruptedly the said selection .and also the operation of the line connecting-upapexchange is aknee-shaped lever 187 which indi vidual selective apparatus and a plurality simultaneously come to a standstlllover the v v the individual selective apparatus being-adapted to select automatically an idle or disengaged line connecting-up apparatus of said device, with adjustable shields for (topics of paratus, contact and lever mechanism one each for the individual and connecting-up apparatus, and a test and control circuit governed. thereby so that it is normally 2. In an automatic telephone system, ex-

change apparatus comprising individual selective apparatus and a plurality of line connectingup apparatus, the latter having numeral selecting devices and acontrol device therefor, in combination with a subscribers call-mechanism having a rotatable arm carrying contacts, and fixed contacts cooperating therewith and arranged in groups, one group controlling actuation of-the individual apparatus to cause selection of an idle coiinecting-up apparatus, 0 rtain other groups being in pairs the first o a pair controlling the actuation of a numeraljselecting device, and the second the return fwnormal covering a portion of the first and exposing a like portion of the second of such paired groups, and an auxiliary contact for eachgroup controlling the said control device;

3 'Inan automatic telephone system, subscribers call-mechanism and exchange mechanism, comprising individual selective apparatus and a plurality of line connectingup apparatus, the individual apparatusunder subscribers control being adapted to select an idle connecting-up apparatus, the latter comprising slidable contact rods whereon appear the terminals of subscribers lines grouped numerically by the respective. rods, terminals for cooperating therewith and likewise arranged, like fixed terminals of the respective-groups being joined, contact devices for selecting the desired tenninal comprising fixed contacts androtatable disks under subscribers control, one such' device controlling the others, certain of said others having their fixed contacts connected to said joined terminals, and certain'others controlling the selection and actuation of a rod, and electro-magnetic actuating means 02 tlie contact device and rods.

anism, comprising individual selective apparatus and a plurality of line connectingn an automatic telephone system, sub scribers call-mechanism and exchange mech "to said joined terminals,

up apparatus,

lect-an idle connecting-up apparatus, the latter comprising slidable contact rods Whereon appear the terminals of subscribers lines grouped numerically by the respective rods,

fixed terminals for cooperating therewith" 60 and likewise arranged, like fixed terminals of the respective groups being joined, contact devices forselecting the desired terminal comprising fixed contacts and rotatable disks under subscribers control, one such device controlling the others, certain of "said othershaving their fixed contacts connected and certain others controlling the selection and actuation of a rod, and electro-magnetic actuating means for the contact device and rods, together withrneans for preventing the actuation of a selected rod if the subscribers line selected be busy in another connection.

In an automatic telephone system, sub-:

scribers call-mechanism and exchange mechanism, comprising individual selective-ap paratus and a plurality of line connectingup apparatus, the individual apparatus under subscribers control being adapted to sci-fee lect an idle connecting-up apparatus, the latter comprising slidable contact rods whereon appear the terminals of subscribers lines grouped numerically-by the respective rods,

fixed terminals for coiiperating therewith and likewise arranged, like fixed terminals of-the respective groups being joined, contact devices for selecting the desired terminal comprising fixed contacts and rotatable disks under subscribers control, one such device controlling the others, certain of said others having their fixed contacts connected to said joined terminals, and certain others controlling the selection and actuation of a rod, and 'electro-magnetic aetuat-ing' mcans,

for the contact device and rods, together with means whereby when the subscriber restores his receiver, the call-mechanism is enabled to cause the exchange devices brought into use to be returnedto normal condition.

In testimony whereof I have hereunto set my hand in presence of two witnesses.

. JOSEF PETICKY. Witnesses:

FRANCIS K. SUoHncNnKE. J osnr POKORY.

this patent may be obtained for five cents each, by addressing' the "Commissioner oi Iatento,

the individual apparatus un- I der subscribers control being adapted to se '55

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