US1298441A

US1298441A - Telephone system.

Info

Publication number: US1298441A
Application number: US3575715A
Authority: US
Inventors: Sidney A Beyland
Original assignee: STROMBERG CARLSON TELEPHONE
Current assignee: STROMBERG-CARLSON TELEPHONE Manufacturing Co; STROMBERG CARLSON TELEPHONE
Priority date: 1915-06-23
Filing date: 1915-06-23
Publication date: 1919-03-25
Anticipated expiration: 1936-03-25

Description

S A. BEYLAND.

TELEPHONE SYSTEM.

APPLICATION HLED IU NE 23.1915.

Patented Mar. 25. 1919.

3 SHEETS-SHEET I.

. 26' (H PW v s. A. B'EYLAND; TELEPHONE SYSTEM.

APPLICATION FILED IUNE 23. I915.

Patented Mar. 25, 1919.

3 SHEETS-SHEET 2.

Juan/Z71" S. A. BEYLAND.

TELEPHONQ SYSIEM. APPLICATION FILED JUNE 23. mm.

1,298,441. Patented Mar. 25,1919.

3 SHEETS-4H! 3.

,of the invention,

UNITED STATES PATENT OFFICE.

SIDNEY A. BEYLAND, or NORTH BIDGEVILLE, 01110, nssmNoR, BY MESNE ASSIGN- MENTS, TO STRQMBER-G-GARLSON'TELEPHQN E G0,. OF ROCHESTER, NEW YORK,

A conrona'rron or NEW YORK.

Specification of letters lfate nt.

TELEPHONE SYSTEM.

Patented Mar. 25, 1919.

Application filed June 28, 1915. Serial No. 35,757.

To all (C/2.0171 it may concern:

Be it known that I, SIDNEY A. BEYLAXD, a citizen of the United States,

tion with apparatus for automatically sigand also for placing naling a subscriber, v

control of the calling such means under the switch.

Other objects or my invention will be, clear from a description. of an embodiment of the invention.

Figure 1, shows diagrammatically an embodiment of my invention.

Fig. 2 is a modification of the embodiment shown in Fig. 1.

Fig. 3 is a second modification of the embodiment shown in Fig. 1.

Fig. 4 is a third modification of the embodiment shown in Fig. 1.

Referring now to the drawings a'ndto the embodiments of my invention illustrated therein, and first to the embodiment shown in Figl 1 at A is shown a telephone line which will be spoken of in this specification asthe called line. leading from a plurality of stationsB, C, D and E. Any suitable number of stations may be connected to this line, four having been shown 'for convenience. Each substation is equipped with talking apparatus and,signaling apparatus. The talking apparatus is connected in a bridge 1 and the signal, here shown as a bell, is connected in the bridge 3. The line terminates at a main station F.

residing at. North Ridgcville. in the county of Lorain trated in shown at H, are

for releasing Means are provided at the main station for connecting telephone. lines together, such asconnectmg links, here illustrated as a cord circuit G, a portion only of which is illusthe drawing. Switching means, provided for connectin the cord tojthe telephone line. In the emfiodiments illustrated, this switching means consists of plugs and jacks, illustrated at 7) and J, respectively, in Fig. 1. A plurality of sources of signaling current, her'e shown as L and M, are employed for generators I, Ix v operating the signals at the substations.

The signals at the substations may be so constructed that they respond to one particular character of current only, and the generators may be so constructed that they will select and operate the signals at the substations. Conductors are provided for connecting the sources of current to the line. Commutators 4, 5, 6 and 7 may be connected in these con ductors for the purpose of intermittently associating the sources with the signal so as to cause the operation of the signal at intervals of time. Signal controllin means are shown t N, O, P d Q, here i lustrated as ring-v ing keys, controlling the connection of the sources I, K, L and M in the signaling circuit,

A master key or switch is shown at R, which is operated whenever any of the keys N, O, P or Q, is operated. Relays are shown at Z, S, T, U, V IV, X .andY. When it 15 desired to connect the source M with the called line, the switch H is operated by inserting the plug 7) into the jack J. The key Q is then operated, operating at the same timetlle key R and closing a circuit fo the relay Y through the contactsof the relay IV. the contacts of the key R and the contacts of the relay S,which was energized when. the switch H was operated. The relay Y will be energized,interrupting the cord circuit and connecting the source of current M to the called line. At the same time, the relay Y completes v a. locking circuit for itself, through the switch 8.

l/Vhen the master key R is operated, a circuit will be completed for the relay V,

- sat-ion has been completed generator L,

' tel-y 17-to ground 18.

for the relay Y, as follows:

'mature, opening the ringin which will disconnect the battery of keys N, O, P, Q and R from the cord G and complete'a'lockin circuit, for itself through the switch 9. lhe relay W is so adjusted, that it does not operate until after the relay -Y has operated. It will thus be seen that the bank of keys will now be relieved of further service with the cord circuit G during this connection and may be used in connection with the cord circuit G for making connections with another telephone line A, if such connection is desired, thus enabling me to useone bank of keys for a whole position. The ringin takes place automatically until the subscriher responds, when the flow of current through the relay X will be such as to cause it to close a switch 10 and shunt the relay Y, which will release its arcircuit and rel hen the converand the operator has withdrawn the plug from the jack J the relay S will be deiinergized and the system restored to normal.

If the subscriber wanted is provided with a, signal which responds to current from the the operator, after closing the switch H, operates the key X. which will complete a circuit for the relay T. which bein energized, will connect the source L in the ringing circuit. excluding the source M. The relay T will also lock itself up throug'lra switch ll. Otherwise. the operation will be the same as previously described. \Vhen the key is operated. the relay l' will be energized, connectin" the source K in the signaling circuit. hen the key P is operated, the relay V will be energized. connecting the source I in the circuit.

Perhaps the invention will be better understood from a detailed description of the operation of the embodiment shown in Fig. 1. The operator having received a call over a calling line, not shown, and elected to use the cord circuit (it. connects the end of that particular cord circuit, not shown, with the calling line and learns the subscriber desired. Assuming that it is the subscriber at B that is wanted, and that the signal 2. responds to the character of current proforming the cord circuit.

(blood by the generator M, the operator after testing the line A and finding it, as we shall assume, idle, inserts the pine p into the jack J, completing a circuit for tlie relay S as follows: ground at 12, cut-off relay 13-contact 1 icontact 15-conductor l6Shat- The relay'S will be energized. closing the

switches

19, 20, 21, 22, 23 and 24. The operator then actuates the key Q, which through some such memher as a swinging plate, a portion of which is illustrated at '25, closes the

switches

26 and 27 of the key R. A circuit is thus completed ground at 28- key R.

wanted, the keyO is actuated, which that the source K ing strands of the cord circuit and a switch ill in the circuit of the relay 38. The relay Y closes switches 39 and T0 in the signaling circuit and the switch 8, completing a looking circuit for itself independently of the This circuit is traced from ground l1 through the switch 8. the relay Y to and through thebattcry 17, as previously described.

At the time the key It was operated, a circuit was completed for the relay W. which is adjusted to respond after the operation of the relay Y. The circuit for the relay thus completed is as follows: ground 18, llswitch .H. -S\\'lt('ll l2-coudlu-tor l conductor ll-ke v ii to ground in. The relay \V will be energized, closing the s itch 5.) and thereafter opening the switch 42 and interrupting its connection with the condom tor 43. Closing the switch 9 completes a locking circuit for the relay \V from ground 4l--through tl-thc relay \V and over the circuit as previously traced. The relay W also opens switches 45. l6, l7 and 31, completely disconnecting the bank of keys O, P, Q and R from the cord circuit (l. thereby relcaflig the keys for use in connection with another cord circuit. for example. cord circuit G. However, if after the'operation of the switch H the key Q were operated. a circuit would be completed for the relr Y and the source of current .\I would lJO connected to the line in the same manner as described in connection with the cord G and the line A. it it is desired to operate thev signal at C. the key P is uperated, thereby completing a circuit for the relay V as follows: lH-1T,-switch 25 Y-switch lT-conductor fi(l-conductor 5l-key I to ground 2h. The relay V is energized, opening the switch 52 and disconnecting the source M from the conductor 53 and closing a switch 54, thereby connecting the generator I to the conductor .33. The relay V also closes a locking circuit for itself, by closing the switch 55, such locking circuit being from ground 56, through switch 55 and the circuit for V, as preriousl y traced. The closing of the switch R will in the same manner cause the energization of the relays W and Y and the operations with respect to these relays will be the same as before.

In case it is the subscriber at D that is will complete a circuit for the relay U. The operation will be the same as before, except will be connected in the gnalinncireult' Shou it he dmired to as operate such as illustrated connected in the lay 101-conductor 45,

time of the source M operate the signal at E, the key N is actuated, 'which would complete a circuiflf r t e relay T in the same manner as was de-, scribed for the relays .U and V, the source B being this time connected in the signaling circuit... No matter which of the sources is signaling circuit, its controlling commutator will intermittently associate and disassociate it with thelcalling line, 'so that current will be intermittently applied to .such line to selectively "operate the desired signal. Current flowing through the relay X will, however, not be enabled such relay'until the-subscriber res 'onds,-placing the loy'resistance bridge, at 1,- across the line and admitting such a How, of current that there- X will be operated, closing a shunt 10 about the relay Y, which will release its con ,tacts, interrupting the signaling circuit and restoring the'talking circuit. At the end of the conversation, the operator at F with-. draws the plug 12 from the jack J when the system will be restored tonormal, the relay Wbeing deenergized when its circuit is interrupted by the opening oi the switch 2-1, which occurs when 'the relay S is dee'nergized, owing to the interruption of its ('il'r' e opening of the switch H. The deenergization of the relay W again associates the bank of keys with the cord circuit G. a

' "In theembodiment shown in Fi .L' the key N, is operated when it is desired to employ the source M for signaling." hen X, is operated, .the relays 100, '101and Y, will be ener 'ze d over the following circuits: for the rel y 100, ground 10:2.-s\vit ch103cond'uctor- 10-1-c0nductor 105switclr 106- relay 100-conductor10Tswitch 108-battery 109 to ground 110; for the relay 101, as follows-ground 102 -switch 111-c0nductor"112c0nductor ,113switch ll iere- 115switch 116-bat, tcry 109-[0 ground 110; for the relay Y as follows-ground 102switch 117conductor, ]18-conductor 119-switch 120*- conductor 12l Y -conductor 122-switch 123-switch 12-i-switch 125-battery109- to ground 110. All three of these relays will be actuated, the relay 100 closing a switch and completing a locking circuit for itself and closing a switch 131 in the connec- The relay 101 closes a switch 132. completing a locking circuit for itself and a switch 133, completing the connection of the source M, to the conductor 13%. The relay Y closes a switch 135, complcting a locking circuit for itself to. ground 136. interrupts one of the talking, s trands at 137 and completes the ringing circuit at 1'38 and 197. This-relay alsocloses a switch 139 in the circuit of the relay W which'is -energized from ground ..136-switch 139..

-u'al keys keys are illustrated at N P and V \Vhen the rela;: W -switch i41-to round 110.. The relay W comnletes a 100 ing circuit for Itself through t re conductor 142 ,and disconnects the bank of keys from the cordcircuit by opening the switches 106;;11-1 and120. When it is desired to connect the ,s ourc e K to the called line, the key (),'is operated, thereby causingthe e'nergi'zation of thei'elay' 100 overthe same c'ircuit. as previously described, except thatjt will nowinclude 'tl1e switch instead of the switch|103. A aircuit wouldal'so becompleted for the relay Y- through the switch 151 instead of 117.

he relay 100 will be energized, closing the switch 152 and "connecting the generator.K in the circuit. iilien it is desired to connect the generator L in the circuit, the key P actuated completing'circuits for the re-' lays 101 and .Y through the switches and ltilyrespectively, and when it is desired to connect .the source Ling the key Q, is operated, completing a circuit, for Y through the switch 162. ,lVith either source connected. the automatic ringing will be substantially the same "as .previously 'de scribed, and the system will berestored to normal when the plug p, is withdrawn from the jackJ thereby reconnecting thebank. of keys to-the cord circuit G,.

Inthe embodiment shown in Fig. it will he noted that no master key is employech and, that the circuit connections. are controlled through the actuation ofthe individalone. It,wil1 also be noted that the circuit of the key disconnecting relay is completed by the relay 3;, instead ofeing controlled by thenlaster key.

In Fig. 3 instead of employing a mechani rally actua ted'master key; a relay 90 is employed which controls the switches QG'Iand 27'. Each of the keys 3 O'L'P and Q'ron; trol 'a circuit for the relay 90 throu h' the conductors 91-'51'--52 and 53, the c nduc:

tors

51,52 and 53 being connected to, th

source LT when the relay 90 is employed),

as illustrated in Fig. 1. v V

In the embodiment shown in Fig. :i, the

When it is desired toconne-ct the source $1 in the ringing circuit, the key Q is' operated, closing a circuit for the-relayY- from ground 200, through conductor 201

switches

202 and 203, relay Y conductor 204conductor 205-now closed switch 206--'ba ttery 207-t0 ground 208. The relay Y completes, the ringing circuit as previously described and alsoa circuit for the relay I ,through the switch 209, the switch. 203 an the switch 210, which includes the source .207 and ground 208. The rela W will disconndct thekeys from the COI( circuit-,vreleasing them for use with other cords. con 'ersation is terminated, the

circuit of the relay W willbe broken when the relay S is deenergized which will happen when its circuit is interrupted by the opening of the switch H thereby re-connecting the keys to the cord circuit G The generators I K and L may be selected and connected in the ringing circuit instead of the generator M through the operation of the

keys N

0 and 1 and their control over the relays T I and V In each case, the circuit of the relay Y will be closed through the operation of any one of these relays by the grounding of the conductor 220. t In each case. as soon as the relay Y, is operated, it completes the signaling circuit and the circuit for the relay as preriously described. In each case, the keys will be disconnected from the cord (i and reconnected thereto in the mann r previously described.

In the bottom of Fly. 1 a second cord circuit G, is shown, to illustrate how a cord circuit may be employed with the keys during the use of the cord circuit (it, for signaling or talking. The cord circuit G, a duplicate of the cord circuit (l and its operation will be clear.

I have illustrated these embodiments of my invention and the details shown therein for the purpose of clearly describing my invention, and not that I wish to be limited thereto. as it will be apparent to those skilled in the art that numerous and extensive departures may be made from both the forms and details illustrated, without departing from the spirit of the invention.

1 claim:

'1. In a telephone system, the combination of a plurality of signaling circuit sections, each including a signal and another signaling circuit section. including a source of sig naling current adapted to operate said signals, said last named section adapted to be connected to each of the plurality of first named sections and complete a signaling circuit, a signaliin relay controlling each circuit, a circuit or each relay including contacts of a switch common to the relays and means controlled by said switch for removing said switch from the circuit of a signaling relay which has been operated.

2. In a telephone system, the combination of a signaling circuit, a source of signaling current, a relay ctmtrollingthe connection of said source in said circuit, a circuit for said relay, a switch in said last named circuit and means controlled by said switch for disconnecting said switch from said relay while the source of signaling current, is connect-ed in the signaling circuit.

3. In a telephone system, the combination of a telephone line, a source of signaling current, means including a relay for connecting said source to said line, a switch normally connected to said relay controlling "the same and a second relay controlled in said switch for disconnecting said switci from said first-named relay after the relay has been operated.

4.. In a telephone system, the combination of a telephone line, a source of signaling current, means including a signaling relay controlling the connection of said source to said line, a signaling key normally connected to said signaling relay and controllin the same, a locking circuit for said relay 0 osed when the same is operated, said locking circuit being independent of said key and a second relay controlled by said key and operated when the key is actuated to disconnect; the key from the signaling relay.

5. In a telephone system, the combination of a telephone line, a source of signaling current. apparatus including a signaling relay for connecting said source to said line, a signaling key normally connected to said signaling relay, a second relay controlling the connection of said key to said signaling relay and a circuit for said signaling relay controlled by said signaling relay, sa'd circuit being independent of the connect n between the key and the signaling relay. In a telephone system. the combination of a telephone line, a source of signaling current, conductors including a switch for connecting said source to said line, a signaling relay controlling said conductors, a signaling key, apparatus controlled by said switch and operated when said switch is closed for placing said relay under the control of said key and electromagnetic mechanism controlled by said key for removing said relay from the control of said key.

7. In a telephone system, the combination of a telephone line, a source of signaling current, means including a sw'tch for connecting said source to said line. a signaling relay controlling said connecting means, a signaling key, apparatus controlled by said switch after said switch is operated for placing said signaling relay under the control of said key and a second relay controlled by said key for removing said signaling relay from the control of said key.

8. In a telephone system, the combination of a plurality of telephone lines, a plurality of cord circuits, a signaling relay associated with each cord circuit, a signaling key normally conditioned to exercise controi over each signaling relay and means controlled by said key for removing from the control of said key each signaling relay which has been operated.

9. In a telephone system, the combination of a plurality of telephone lines, a plurality of cord circuits, a signaling relay associated with each cord circuit, a signaling key nor-' mally conditioned to exercise control over each signaling relay, means controlled by said key for removing from the control of said key each si ling relay which has been operated, an hleans'forautomatically restor ng the, normal 'association of said key with sa1drelay when said relay' is deene'r- 'ralityof cord circuits, asignaling' relay in each c'ord circuit, a circuit for each nela'y, a.

switch common-to all of said circuits, the circuit of each relay being closed up to the contacts of s'aidswitch when its associate cord circuit is connected ,to telephone liti'es, a second relay controlled by said. switch for disconnecting said switchfrom a signaling relay'which hasb'een' operated, and a locking circuit'-for saidsignaling relay in ependent ofsaid switch and-completed when said si aling relayis operated.

I 12. n a telephone system, the combination of a plurality of s'ighaling circuits, at pluralityiof sources of-signaling current, each adapted to be connected incach of said circuits, a signaling relay. controllin each circuit,'a switch common to' said re ays, a circuit for each relay including contacts of said switch, a second relay for removing the contacts of the switch from the circuit of a signaling relay which has been operated and controlled by said signaling relay.

1-3: In a telephone system, the. combination of a plurality of telephone lines, a signal on each line. a source of signaling current and means to connect said-source to each line, a signalingirelay controlling the connection of said source to each line, a circuit for each of said relays including contacts of a switch common to said relays, a

a locking circuit for said signaling relay second relay ,for removing the contacts of said switch from the circuit of asignaling relay which has been operated and a locking circuit for said signaling relay controlled by said signaling relay.

14. In 'a telephone system, the combination of a plurality of cord circuits, :1 signaling relay in each 'cord circuit, a signaling key common to said relays and normally capable of exercising control over said re lays and mechanism controlled by said key for automatically renu'ving a signaling re- .lay from the control of sald key.

15. In-a ,telephone system, the combinetionof a plurality of line connecting means, a signaling relay associated with each line connecting means, a signaling key common to a plurality of'signalingrelays normally connected tosaid rclays and mechanism controlled by said key for disconnecting said key from each of said relays. I

16. In a telephone system, the coinbinm tionv ot' a plurality of cord circuits, a plurality of telephone lines, switchesv for connectln'g the cord circuits to the telephone. lines, a signaling relay' associated with each cord circuit, a key common to a number of cords connected to each of said relays and mechanism controlled by said switches .and said key for disconnectins.

.tlle k y from the signaling relays 17'. n a, telephone system, the combine-- tion of a plurality of telephone lines. a plurality of signaling circuits, each includmg a portion of a telephone line, a switch in ,each signaling circuit, elcctromagnctie .means -associatedwith each switch con-- trolling each signaling circuit. a key norinally connected to each of said clectromag netic means and apparatus controlled by said key and said switch for disconnecting said key from ,the electromagnetic means associated with the switch.

18.,In a telephone system, the comhinm tion of a ringin circuit incluifing a switch, a relay control ing the ring: g circuit, a ringing key, a circuit for ,the relay con trolled by the ringing key, a second relay adapted to remove the control of the ring ing'relay winding from the key and means including said key and saidvswitch con trolling said second named relay winding.

19. In a telephone system. the combine controlling the same, a ringing key normally connected to the ringing relay. a second relay normally connected-to the ring-- in key. said second relay controlling the connection of the ringing relay to the ring .ing key and a locking-circuit for each of said.

relays.

20. In a telephone system, the combina tion of a'ringing circuit. a ringing relay controlling the same. a ringing key. a can ductor normally connecting the ringing key to the ringing relay. :1 second relayron tibn of a ringing circuit,a ringing relay 22. In a telephone system, the combination of a signaling circuit, a signaling relay controlling the circuit, a signaling key normally connected to said relay, a second relay controlled by said. key adapted to disconnect the key from the signaling relay, a locking circuit for the second relay In witness whereof I have hereunto signed my name this 14th day of June, 1915.

SIDNEY A. BEYLAND.