US1317074A - clausen - Google Patents

Description

H. P. CLAUSEN.

TELEPHONE SYSTEM.

APPLICATION FILED Auaso, I9I.

Patented Sept. 23, 1919.

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H. P. CLAUSEN.

TELEPHONE SYSTEM.

APPLICATION FILED AuG.3o, I9I6.

Patented Sept. 23, 1919.

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HENRY P. CLAUSEN, 0F MOUNT VERNON, NEW YORK, .ASSIGNOR TO WESTERN ELECTRIC COMPANY, INCORPORATED, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

TELEPHONE SYSTEM.

Specification of Letters Patent.

Patented Sept. 23, 1919.

Application filed August 30, 1916. Serial No. 117,623.

T0 all whom it 'may concern Be it known that I, HENRY P. CLAUSEN, a citizen ot' the United States, residing at Mount Vernon, in the county of Vestchester and State of New York, have invented certain new and useful Improvements in Telephone Systems, of which the following is a full. clear, concise, and exact description.

The present invent-ion relates to telephone lines of the type employing machine switches.

It is frequently desirable, when a subscriber leaves his substation, that calls intended t'or this substation be diverted to another telephone station where the call will receive attention.

The main feature of this invention, therefore. is a circuit arrangement whereby a call intended for one substation will actuate a call signal at another substation where certain information may be given to the calling party.

Referring to the drawings: Figure 1 rep- :resents diagrammatically a portion of a telephone system employing the present invention; the dotted rectangles shown in this figure represent diagrammatically connectors. the circuit arrangement of which is shown in Fig. 3. Fig. 2 illustrates diagrammat-ically a. portion of a telephone system employing a modified form ot the present invention. In this diagram also, the dotted rectangle represents a connector. Fig. 3 shows a suitable circuit arrangement for operating the connectors which are employed in this system.

The vform of invention disclosed in Fig. 1 is particularly adapted to the use of a subscriber who has two telephones, one of which is located at his office and the other at hisv residence. With the present invention, it will be possible for the subscriber on leaving his otce to set up a circuit by which the line signals of both of his telephones will bc operated when a call comes to the telephone at his office.

Referring to Fig. 1. 5 designates the usual substation apparatus which may be located at the ofice of the subscriber. When the subscriber is about to leave his substation, he will remove his receiver from the hook. This operation causes the brushes 6 and 7 of the linder to engage the contacts S and 9 ot his line. The subscriber will then transmit, by means of his sendingr device, impulses corresponding to the digits of a previously assigned number, which will set the connector represented in Fig. 1, by the brushes l0 and test brush 11, on the contacts 12 and test contact 13. This operation places ground on test contact 13 and thereby actuates relay 14 over the following circuit: grounded battery, left-hand winding of relay 14 and conductor 15 to grounded contact 13. Relay 14 thereupon attracts its armatures and at its righthand armature establishes a locking circuit extending from grounded battery, resistance 16, conductor 17, front contact and armature of relay 14, right-hand winding of this relay to ground. Relay 14 at its left-hand armatures establishes a circuit which connects substation 5 with substation 18. This circuit may be traced as follows: substation apparatus 5, conductor 19, front contact and innermost. left-hand armature of relay 14, conductor 20, substation apparatus 18, conduc-toi` 21, front contact and outermost lefthand armature of relay 14, conductor 22 to substation apparatus 5.

Substation 18 may similary be connected to sub-station 5 by removing the receiver at substation 5 which causes brushes 23 and 24 of the finder to engage contacts 25 and 26. The subscriber then transmits` impulses corresponding to the assigned number, and sets the brushes 27 and test brush 28 of the connector on the contacts 29 and test contact 30. This also places ground on contact 30 which causes relay 14 to be energized over a circuit which may be traced from grounded battery, left-hand winding of relay 14, conductor 15, conductor 31 to grounded Contact 30. Relay 1-1- thereupon attracts its armatures. as above described, and also completes a locking circuit through its right-hand winding. vWhen it is desired to sever the connection between substations 5 and 1S, the subscriber located at either of these stations will transmit impulses corresponding to the digits of another previously assigned number which will place the brushes of the connector, in the case of the connector associated with substation 18, on to contacts 32 and test contact 33, This will establish a shunt circuit about the relay 14. which shunt circuit may be traced from grounded battery, resistance 16, conductor 34, to grounded test contact 33. Similarly from substation 5.- the brushes of the connector may be directivel)v set upon the contacts 35 and test contact 36, which will I likewise establish a shunt circuit about the;

locking winding of relay 14.

With the left-hand armaturesof rela 14 in their attracted position, when a ca ing line L is extended by means of switches' represented by switch brushes 37, 38 and 39 t-o the contacts corresponding to the line connected with sub-station 5, the application of ringing current to this line will actuate the ringing devices at both of the substations 5 and 18.

Referring to Fig. 2, in this arrangement,

lwhen the subscriber whose substation is indicated at 50 is about to leave his office, he may dial a previously assigned number which will connect him to a special operator at the telephone exchange. After having dialed thls number by sending additional impulses, he will actuate an auxiliary switch which will complete circuits for operating various signals at the exchange. These signals will inform the operator of his whereabouts or when he will 'return to. his oiiice. y

When the subscriber at substation 50 removes his receiver from its switchhook, the brushes 51 and 52 of the finder will locate the contacts 53 and 54 of this calling line. The subscriber then operates his dial switch to send impulses corresponding to the digits of a previously assigned special number which set the brushes 55, 56 and 57 on to contacts 58 and 59 and dead contact 60. Relay 61 is thereupon actuated over` a circuit which may be traced from grounded battery, left-hand winding of relay 61, contacts 59, the link circuits previ-1 ously established through the substation 50, upper side of the line to contact 58, normally closed contact 62, right-hand winding of relay 6l to ground. Relay 61 attracts its armature and completes an energizing circuit for the slow-releasing relay 63 which extends from grounded battery, relay 63, front contact and armature of relay 61 to ground. When the subscriber operates Vhis dial to send additional impulses corresponding to the various signals at the exchange, the armaturepf relay 61 will be momentarily retracted. This completes an energizing circuit for the slow-releasing magnet 64, which circuit extends from grounded battery, relay 64, front contact and armature of relay 63, back contact and armature' of relay 61 to ground. Relay 64 attracts its left-hand armature and establishes a maintaining circuit about the normally closed contact 62 the purpose of which will be herein later described. At the same time that relay 63 attracted its armature, an energizing circuit for the motor magnet 65 of the auxiliary switch, vwas established which extends from grounded battery, magnet 65, conductor 66, armature and front contact 4of relay 63, armature and back contact of relay 61 to ground. In response to the additional impulses sent, motor magnet 65 operates the auxiliary switch brush 67 to engage the various contacts `90, which in turn closes a break-point in the energizing circuit of the lamp signals 68, 69, 70, 71V and 72. The maintaining circuit established about the offnormal contact 62 is provided to prevent any further actuation of the motor magnet when the switch has moved to an off-normal position.

In this arrangement, when a call is extended'fromq the line L by means of the connecting switch brushes 73, 74 and 75 to the substation 50, the application of ringing current to this line will momentarily energize relay 76. When relay 76 is` energized, it attracts its armature and completes a lockin circuit which extends groundedgbattery, through one of the lamp signals, forexample, lamp 68, conductor 7 7, contact 90, switch brush 67, armature and front contact of relay 76, contact 7'8, contact member 79 to ground. The operator located at .the exchange notes the actuation of signal 68 and inserts a plug (not shown) into a jack 80. This causes arm 81 to move contact member 79 out of engagement with jcontact 78, whereupon the energizing circuit for lamp 68 is interrupted. The operator ,then informs the calling party of the information indicated by the lamp signal 68 land when the subscriber returns to his oiiice, he may call up and learn if the operator has answered any calls directed to his oflice. y

The subscriber at substation 5() may wipe out these connections in the following manner; when he removes his receiver from the switchhook at substation 50, brushes 51 and 52 will engage the contacts 53 and 54. cor-- responding to hisb line;v he will then transmit impulses corresponding to a number previously assigned for the purpose of wiping out the connection. This will set brushes 82, 83 and 84 on the contacts 85, 86 and 87. This places ground on contact 87, and release magnet 8 8 receives an energizing impulse over acircuit extending from grounded battery, release magnet 88, contact v87. Release magnet 88 attracts its armature and completes a locking circuit which is mainfrom tained until the switches are restored to nor will be received over a circuit extending from grounded battery, release magnet 88, and key 99 to ground. Y

The circuits employed in establishing the various link connections of the present invention may be of any preferred form. The circuits for operating the nal or connector switch are disclosed in Fig. 3 and will 'be hereinafter described.

Vhen the the link circuits of the system disclosed in Figs. 1 and 2 have been extended to the connectors by means of the line and selector switches, the stepping relay 100 of the connector is energized over a circuit which may be traced from grounded battery, left-hand winding of relay 100, upper side of the line, through the link circuits, over the lower side of the line, righthand winding of relay 100 to ground. Stepping relay 100 attracts its armature and thereby comple-tes an energizing circuit for the slow-releasing relay 101. This circuit extends from grounded battery, relay 101, front contact and armature of relay 100 to ground. Relay 101 then attracts its armatures. In response t0 the operation of the sending device, relay 100 momentarily retracts its armature and completes an energizing circuit for the second slowsreleasing relay 102. This circuit extends from grounded battery, relay 102, front Contact and armature of relay 101, back contact and armature ofrelay 100 to ground. Relay 102 then attracts its armatures and completes an energizing circuit for the escape magnet 103, which circuit extends from grounded battery, escape magnet 103, right-hand armature and front contact of relay 102 to ground.

lVlien the armatures of relay 101 were attracted a break point in the operating circuit of the primary motor magnet 10-1 was closed. Each time that the armature of relay 100 is retracted, due to the interrupting of its energizing circuit at the sending device, the operating circuit for primary motor magnet 104 is completed. This circuit extends from grounded battery, primary motor magnet 104, side-switch wiper 105 in its first position, conductor 106, front contact and right-hand armature of relay 101, back contact and armature of relay 100 to ground. At the close of the irst series of impulses, relay 100 holds its armature attracted for a. relatively long interval, thereby interrupting the energizing circuit of second slow-release relay 102 at the back contact and armature of relay 100. Relay 102 denergizes and interrupts the operating circuit of escape magnet 103 at the front contact and right-hand armature of relay 102. The escape magnet in this instance operates on its denergization to move the side-switch wipers into the second position.

The impulse-sending device is then actu ated to send impulses corresponding to the units digit of the assigned number, whereupon slow-releasing relay 102 is again energized by reason of the momentary retractions of the armature of relay 100. The operating circuit for the secondary magnet, in parallel with this last named circuit, extends from grounded battery, secondary motor magnet 107, side-switch wiper 105 in its second position, conductor 106, front contact and right-hand armature of relay 101, back contact and armature 100 to ground. At the close ot' the units series of impulses, relay 100 is maintained energized, whereupon the energizing circuit of relay 102 is again interrupted as previously described, and by retracting its armature causes escape-magnet 103 to be denergized. The side-switch wipers thereupon move into their third position. y

It will be noted that when side-switch wiper 110 moves into its third position` the test contact of the desired set of contacts will be connected to ground.

If, for any reason, the desired contact cannot be seized due to the presence of ground on its test contact, a circuit for the releasing magnet 108 will be completed which may be traced from grounded battery, magnet 109, oil-normal contact 109, lefthand armature and bac-k contact of slowreleasing relay 102, side-switch wiper 110 in its second position, conductor 113, to ground.

wWhen this connecting circuit arrangement is employed in the system disclosed in Fig. 2, after the brushes of the connector have been set upon the desired set of terminals. line relay 100 remains energized. At its front contact and innermost armature an energizing circuit is completed for slowreleasing relay 101 from grounded battery. front contact and innermost armature to ground. Vhen the subscriber sends the ad ditional impulses, motor magnet 65 places brush 67 in a position to energize the desired signals G8, 69, 70, 71 or 72, as line relay 100 momentarily retracts its outermost right-hand armature, thereby interrupting the operating circuit of relay 61. This circuit may be traced from grounded battery, left-hand winding of relay 61, contact 59, brush 56, lower side of the line, side-switch wiper 111 in its third position, conductor 112, front contact and outermost right-hand armature of relay 101, front contact and outermost armature of relay 100, conductor 113` side-switch wiper 114 in its third position, brush 55, contact 5S. normally closed contact 62. right-hand winding of relay 61, to ground. ln this way the impulses of the callingr dial are repeated to control the operating circuits of motor magnet 65.

The release of the line and selecting switches is accomplished by the calling party replacing his receiver on the switchhook. This operation causes the line relay 100 of the connector to dencrgize and to retract its armature. The energizing circuit of relay 101 is interrupted vat the front contact 4and innermost right-hand armature of relay 100. By retracting its armatures the relay 101 completes Ia release circuit for the connector which may be traced from grounded battery, release magnet 108, olf-normal contact 109, back contact and left-hand armature of relay 101, back contact and innermost right-hand armature of relay 101, back contact and innermost right-hand armature of line relay 100, to ground. rIhe .extending said line to said stations, means including automatic switching` means for interrelating the call signals of said stations, and means for restoring said switching means to normal position.

2. In a telephone system, a primarytelephone station and a secondary telephone station each provided with a call signal, a telephone line, means for extending said line to said primary and said secondary stations,

`an automatic switching device, an operating circuit for the call signal at said secondary telephone station controlled in part by said automatic switching device, whereby said signalsy are simultaneously actuated, and

means for opening said circuit.

3. In a telephone system, a primary sub.- station, a secondary substation, telephone lines leading to said substations, automatic switching means, means controlled through said automatic switching means yfor connecting saidl substations in multiple to said lines prior to the initiation of a call to said substations.

t. In a telephone system, a central station,

a 'plurality of substations, connected therewith, and means at the central station controlled by a subscriber at one substation for immediately diverting a call intended for said .substation to another substation.

5. In a telephone system, a primary sub- I station, al secondary substation, telephone lines leading to said substations, a-telephone line individual to, and connecting said primary substation and said secondary substation, said last-mentioned line having a normally open contact therein, automatic switching means, land means controlled through said automatic switching means for closing said contact.

' 6.. In a telephone system, a primary substation, a secondary substation, telephone lines leading to saids'ubstations, va telephone line individual to, and connecting said pri- .said secondary telephone stations as called whereby said signals are simultaneously action, said last-mentioned line having a normally open contact therein, electromagnetic vmeans for closing said contact and selectively operated automatic switching means for operating said electromagnetic means.

7. In a telephone system, a primary telephone station provided with a call signal, a secondary telephone station provided with a call signal, a telephone line, means for ex-y t, tending said line to said telephone stations "i as called stations, means including automatic switching means for interrelating the call signals of said stations, and means for restoring said switching means to normal position. 4.

8. In a telephone system, a primary staftion and a secondary station, each provided with a call signal, a telephone line, means for extending said line to said primary and stations, an automaticswit-ching device, an. l operating circuit for the call signal at said secondary telephone substation controlled in part by said automatic switching device tuated, and means' for opening said circuit.

9. In a telephone system, a primary substation, a secondary substation, telephone lines leading to said stations, automatic switching means, means controlled b-y one of said stationsv through said automatic switching means for simultaneously'connecting said substations in multiple to said lines.

10. In a telephone system, a primary substation, a secondary substation, telephone lines leading to said substations, and means for connectingsaid substations in multiple to said lines priorto the initiation of a call to said substations.

11. In a telephone system, a telephone exchange, a plurality of telephone stations associated therewith, and means controlled -from one of said telephone stations for immediately diverting a' call from said. last 110 mentioned telephone station to another telephone station.l

`12. In a telephone system, a telephone exchange, a plurality of telephone stations associated therewith, and means controlled from oneA of said telephone stations for diverting a call from said last mentioned telephone station to another 'telephone station prior to the initiation of said call.

13. In a telephone system, an exchange, a plurality of telephone stations associated therewith, and automatic means controlled from, one of said telephone stations for immediately diverting a call from said vlast mentioned station to another telephone station. v

14. In a telephone system, an exchange, a plurality of telephone stations associated therewith, and directively operable lmeans controlled from one of said telephone sta- '130 tions for immediately diverting a call from station, a secondary substation, telephone said last mentioned station to another telelines leading to said substations, and means phone station. controllable from one of said substations for 15. In a telephone system, an exchange, a connecting said substations in multiple to 15 5 plurality of telephone stations associated said lines prior to the initiation of a call therewith, and direetivelyA operable means t0 said substatons. controlled 'from one 0f said telephone sta- In witness WlleleOf I hereunto Subscribe tions for diverting a call from said last menmy name this 28th day of August, A. I). tioned station to another telephone station .1916. 10 prior to the initiation of said call. Y

16. In a telephone system, a primary sub- HENRY P. CLAUSEN.

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