US1208566A - Telephony. - Google Patents

Description

M. L. TELEPHONY, m APMCAT'ON FILED nic. |912. nENEv/En mmv lo. 1915. awn I Patented Dac. 12.1916.

4 SHEETS SHEET l libwww@ MORTONL, JOHNS@ IW. L. JOHNSON.

TELEPHONY'.

APPLICATION FILED BECA. I9I2. IIEIIEWIED MAY I0. wie.

Panw Dec. '112,191.6i 4 SHEETS-SHEET 3V MORTONL-JOHNSON.

VIII FET.,

IV. L. IOHNSN.

TELEPHONY.

v'PPLICAI'IOI FILED DEC-4, 1912. RENEWED WHW 10p i926. 4 Patenw Da. E, 193.6.

A v 4 SHEETS-SHEET 4.

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sponsive device (such as an electric lamp) individual thereto so thatthe operator will immediately know which link connector has been selected.

The responsive device i). is in the form of an ordinary operators telephone equipment, the receiver ot which is capable o1 response to voice currents inipressed upon the line at a calling station. As the system is organized, the operator will immediately he in eluded in circuit with a calling line and will take tor use the. link connector it corresponding to the actuated signal 1, the system he ing so organized that hut one ot' the signals l will he selectively associated with theI calling line at a time, the other signals remaining inert until the signal taken for use has heen excluded trom circuit and the connection ot the operator`s telephone with the line that has caused the operation ot such signal has heen hroken, mcurrences which tollow the insertion ot the plug ot thc selected link connector into the jack ot' the called line. it such called line is idle. or in a husy hack jack (t it the desired line is husy. 'Vlhe number ot` signals l that are individual to the link connectors fl is suited to the, normal capacity ot the. operator and 'the operators telephone 2 is common to these signals and the link connectors t associated therewitlrylt the normal capacity of the operator is exceeded the switching mechanism A will extend h`eyond its normal range ot' operation 'For the purpose of associating a signal device 7 with the calling line and also a recording device S and link connector t), which latter element may constitute an autonmtically extended part ot the calling line hut which. as in the case ot' the link connectors l-. is not to he restricted to such characteristic. lf the switch A is to respond to another calling suhscriher het'ore the connection initiated hy the elements 7. S and tl at one position has heen completed. then such switch will continue turther in its niovement heyond its normal range to 'associate the additional calling line` with the elements T. S and 9 at another operators position. lach ot the last two waiting contacts (or sets ot waiting contacts) ol each switch is shown as heing common to the elements T. S and E) at the different operators positions. these positions generally indicated at li.' (l in Fig. l. The recording devices S. whether distrihuted among the regular operators positions or located at special overflow' positions. are pret'erahly in the t'orm ot phonograph devices upon which the calling suhscrihers may indicate the connections they desire whereatter the operators. when reaching these recorders in the course ot their duty. will cause the same to repeat the records ims pressed thereupon hy the calling suhscrih` ers. I do not wish to be limited, however,

to the einployment of talking devices to enahlc the equn'nnent ot calling lines` to impress records that are later to receive operators attention nor do I wish to he limited to the location ot the recorder operating apparatus at the suhstations ot calling lines.

l will explain my invention more in dctail hy reference to Figs. 2 to 4. inclusive, taken collectively and in numerical order. llach suhscrihe1"s station may he equipped with the usual `apparatus comprising a telcphone switch hook 1t), a call hell 1l, a condenser 12, a t'elephone receiver i3. and a telephone transmitter lll. the switch hav,ing a normal contact t'or including the serially related hell and condenser in hridge of the associate telephone line and an alternate vcontact t'or including the serially related telephone receiver and transmitter in hridge of the telephone line. lVhen the receiver at a calling station is removed trom its switch hook circuit is estahlished which may hc traced 'trom the grounded hattery 15 through the upper winding' ot a line relay 1G. the upper armature switch ot' a switching relay 1T andi its normal contact. the upper armature switch ot the cutott relay 1S and its normal contact. one side of the calling suhscriher`s line, the telephone hridge at the calling station. the other side ot they calling suhscriher`s line.the lower armature `switch ot relay 1S and its normal contact. the intermwliate armature switch o'lI relay 17 and its norlnal contact. the lower coil ot the relay lt, to ground. The lower airmature switch ot relay lt thereupon estah-y lishes a circuit traceahle trom ground through this armature switch and its then engaged contact. the rotary magnet ll. the armature switch ot' sluggishly operatin;r relay )tl and its contact. tht` winding oll the relay 2t). the side switch wiper 2l. to the grounded hattery 13. 'l`he rotary magnet l!) steps wipers l and 2l in a rotary step hy step movement until the wiper 2f', engages an ungrounded contact whereupon the private magnet 25. whose circuit was estahlished hy the armature switch otl the rotary magnet ll when such rotary magnet was initially energized. has its circuit opened to move the side switch wipers .21 and 2V to their second positions. the wiper 2l in its second position opening the circuit ol" the rotary magnctlfl wherehy the wipers 22. Zl and 2l remain at rest with the wiper "l upon the contact which was previously lmgrmiiulml hut which is now grounded hy the upperarmatureswitch ot the sluggishly operating relay 2T whose circuit was previously closed at the upper armature switch ol' relay lt. this ground com'iectionheing completed owing to the location ot thegside switch wiper 2V in its second position. The ground estahlished at the upper armature Lacasse the side switch wiper 21 and its second positioned waiting contact, the switching relay i7, to the grounded upper armature switch of the sluggishly operating relay 27 by way of the Contact then engaged by this switch. When the switching relay 1.7 is' thus included in circuit sides of the calling line are extended into connection with the wipers 22 and 24 and through these wipers into connection with the talking sides of the selected link connector 3. The .circuit is also established through the test circuit controlling relay 28 by way of'the upper armature switch of relay 27, the relay 28 connecting the battery 15 with the thumbs of themultiple jacks 5 to prevent the calling line from being connected with another calling line.

The talking sides of the selected link circuitv 3 terminate in the tip and sleeve contacts of the calling plug 4.

Any usual or preferred cord circuit equipnient is associated with the talking strands of the link connectors 3 and the heel strand of the plugs 4 ot such link connectors and as such llink connector equipment forms no part of my present invention no detailed description willbe Jfurnished thereof. There is, however, associated with such 4link connectors equipment in addition to the usual cord circuit equipment which will now be described.' The relay 29 of a selected link connector' is included in bridge ot' the calling line and is consequently energized, the circuit for the signal device 1 individual to the selected linkconnector being closed at the upper armature switch of' the relay 29. The intermediate armature switches oli the energized relay 29 pertaining to the selected link connector established a bridge between the sides of the selected link connector, which bridge includes a condenser 30, a secondary toil 31, and an operators receiver 2 at one position and common to the link connectors :it that position.

The operators local transmitter circuit is illustrated at 32 and has the usual primary 33 in inductive relation with the secondary 5&1. By this arrangementthe automatically selected operators telephone equipment is in telephonie relation with the calling line so that the calling subscriber and the automatically selected operator may converse. The operator having learned theconnection desired inserts the calling plug 4, which is i: dividual to the signal l, in the )ack 5 of different link connector.

the desired line, assuming that the line has tested idle, or in the busy back jack 6 if the wanted line has tested busy.

In order to prevent an additional calling subscriber from selecting an operators telei phone while in selected condition I provide a relay 34 at each operators position common to the group of link connectors thereat whose circuit is established at the lowermost armature switch of relay 29 and which relay 34 is provided with as many armature switches as there are link connectors in the group having the relay 34. Each of these armature switches is grounded and is provided with a contact each individual to a These contacts are connected with the waiting contacts pertaining to the wipers 23 in the different link selector switches A by way of the lowermost switch of the sluggishly operating relay 35, each link connector having such a relay 35. Vtlhen the calling plug 4 is inserted in the jack 5, or the jack 6,'a circuit, which is apparent, is established through the corresponding relay 35, whereupon the circuit for the relay 29 is opened at the two upper armature switches of the relay 35 causing the signal device 1 pertaining to the selected link connector to be excluded from circuit and to exclude the operators telephone from bridge connection with the calling line. At

thesame time circuit Jfor the common relay 34 1s opened where it was previously closed at the bottom armature switch of the relay 29. When the relay 34 is denergized its armature switches are released so that the various contacts thereof are ungrounded whereby the contacts for the wipers 23 corresponding to all such ungrounded contacts excepting the one individual to the selected link connector, are ungrounded, the Contact corresponding to the selected link connector having previously been grounded at the lower armature switch of the calling supervisory relay 36. Another link connector in the saine group with the link connector whose plug 4 has 'been inserted in a jack 5, is now subject to automatic selection by another calling line. lf'the plug 4 has been inserted in some jack 5 the operator will take down the connection when the usual supervisory signals are displayed at the calling subscribers supervisory signal 37 and the called subscriberls supervisory signal 38. If the plug 4 has been inserted in the jack 6 the circuit of the supervisory signal 38 is intermittently opened owing to the interrupter 39 and the operator will take down the connection when the signal is displayed at 37. When the plug was inserted in its jack circuit t`or the relay 40 was established, the lowest armature switch oli this relay establishing a circuit traceable trom. ground through this armature switch and its contact to the corresponding waiting contact izo pertaining to the Wiper 23 whereby the ground at the upper armature switch of relay 27 is further replaced, the ground at the bottom armature switch of the relay 40 being the only ground that remains upon the corresponding waiting contact ot' the wiper 23 when the subscribers have replaced their telephones upon their switch hooks. ihen the plug 4 is withdrawn from its engaging jack the ground at the bottoni armature switch of relay 40 is removed to open the circuit of the switching relay 1T. rThe bottoni armature switch of relay 17 thereupon establishes circuit through the associate rclease magnet 4l and the previously closed off normal switch 42 whereby the wipers 21, Q2, 23, 24 and 26 arei'estored to normal.

The relay 35 is inade sluggish in actionl to prevent ground troni being placed upon the contact buttons ot the different switches A individual to the selected link connector in the event ot' relay 34 having been operated by another relay .Q9 consequent upon the initiation of another call by way otl another lilik connector in the same group. The link connector previously selected and iiicluded in connection with the jack 5 or jack (3 is now subject to reselectioii upon the initiation otl another call whether by the same calling line or another calling line. It all otl the responsive devices 2 at the different positions are iiiselccted conditionand further calls are being initiated the switches A pertaining to the additional calling lines will continue beyond their normal ranges of movement to associate the calling lines with the signal devices 7 and S and, as the invention is illustrated. each additional calling line is extended into connection with a link connector having a calling plug t). a i'esult which is accomplishedwhen the wiper 2-l encounters an uiigrouiided contact liutton beyond the normal range ol: the wiper 'lhis button is guarded against selection-by other link selector switches as previously described and Jfurther description of this feature need not be lurnished. The. relay 2) having been energized upon the selection ol an extra link connector having a plug Sl, the associate magnet il is energized to attract its ariiiatui'e switch (or switches each,individual to an extra link connector it there bey a plurality otsuchl. The lower armature switch ot the relay 2E) now establishes a circuit for the associate relay il which operates to guard the selection of a selected recording device S while in selected condition.y as in a manner previously described in connection with the similar relay 34 in its guarding relation to the telephone 'l`he lower armature switch ot' relay 2t) also establisliesi'a circuit for the relay l.

The right hanil armature switch ot relay the contact of this switch, the right hand armature switch and contact of the relay 44, the motor 45, and the grounded battery 15. The motor 45 causes the steel tape 4G to travel in the direction indicated by the arrow, this steel tape being caused to travel throughout the distance of its entire length, the disk 47, also driven by the motor 45 serving, when the cycle of movement of the tape 4.6 has been concluded, to bring an insulating portion ot' its periphery into engagement with the brush 48 whereby a circuit for the battery 15 and motor 45 is opened, this circuit having previously included,

'when the disk had moved from its idle position, this motor in such'circuit by way of the brush 48 and the metallic portion ot the disk then engaged thereby.

Before the brush 48 engages the insulating portion ot the disk 47 the finger 15) closes the. switch 50 inoi'nentarily thereby to close the circuit of magnet` 44 for the purpose of opening the circuit previously established through the motor 45 so that this motor is brought to rest.. -The relay 14, when encrgized, establishes a locking circuit for itself traceable from the grounded battery 15 through the winding oli relay 44, the left hand armature switch ot this relay 44, to thelet't hand grounded armature switch ol relay 43 by way of the contact of this switch so that the circuit of the motor 45 is maintained open until the relay 43 is deenergized at a later period.

The steel tape '-16 passesbetween the poles presented by the sott cores ot the recording magnet 51.y the reproducing magnet 52, and the record erasing magnet 53. The recording magnet is included in a secondal or induced circuit that, is closed by the right hand armature switch of the relay '54 when this relay is energized upon the closure of its circuit at the lett hand armature switch ot' relay 43. The erasing magnet 53 is included in a closed local circuit with the battery 55 at the intermediate armature switch ot' relay 54 when energized. The primary circuit pertaining to the recording magnet 5l is closed at the lcl't hand armature switch oil relay 54 when energized. This primary circuit includes a bridge that is established across the sides of the selected link connector extending to the plug il and contains the calling subscribens telephone equipment. 'l`his bridge includes the primary coil .iti in inductive relation with the secondary coil 5T in the secondary circuit that includes the. recording magnet 51. The calling subscriber merely speaks the inmihcr oll the desired line` the voice currents which the calling subscrilwr then impressed upon his line being transmitted at 5l? and 5T so that they are impa'essed upon the recording magnetI 51, this magnet, in turn eil'ecting a record upon the tape 46. When the lll blt

penance i im linger 49 momentarily closes the switch 50 a circuit is established that includes this switch, the relay (S1 and the grounded battery 15.

A locking circuit is established :tor the ree lay G1 by way of the llt hand grounded armature switch of relay l-3, lett hand armature switch and its contact of relay il. The left hand armature switch o'li the relay (Sl thereupon closes the circuit ior the signal 7 individual to the link connector that per tains to the selected recorder S that may be common to a number of the extra link connectorshaving the connecting plugs i). W hen the operator is able to respond to the signal conveyed at 7 she depresses her key 62 to include her telephone set in a closed local s'econdary circuit that contains the secondary coil 63, the primary'for which resides in 'the coil Gil included in the circuit with the reproducing magnet 52. Vtlhen the key 62 is depressed the relay is included in circuit, the right hand armature switch of the relay 65 operating to start the motor Ll5 which continues throughout the cycle controlled7 as before, by the disk 47, whereby the tape i6 is caused to pass through its range of travel again so that the magnetic fields upon the tape at 51 operate to induce*corresponding fields upon the magnet 52 to cause voice currents in the local circuit that includes the primary 6i, this local circuit having been closed at the left hand armature switch of relay 65. The magnet 52, like magnets 5l and. 53, has sott'iron cores upon which acs count magnet 52 is included in circuit with the battery 66.

lWhen the recording fields upon the tape e6 are being passed into cooperation with the reproducing magnet 52 the circuit :tor the erasing magnet 53 is opened at the right hand armature switch of the energized relay (5l. lWhen the key (32 is depressed its lowermost contacts close circuit through the relay 34 associated with the link connectors 3 to prevent any such link connectors from being selected while the operator is listening to the record olf the recording device 8. The operator having heard the record, will coinplete the connection as noted upon the reeord by inserting the calling plug i) ot the selected link connector into the jack oit the desired line if idle, or if the line is busy by inserting such plug into the busy back jack G. ln either of which cases the relay 29 is deenergized, the lower-most armature switch ot this relay opening the circuits of relays 34,

' 43 (Fig. -t) which in turn opens the circuit ot' relays i4 and 54 whereby the equipment is restored to normal. Vihen a new call is initiated the. magnet 53y operates to erase the previous record and to prepare. the tape Llli for the reception ol a new record. lil/'hen the key h2 is operated a circuit is closed for operating il@ relay 67 to open the circuit of the recording magnet 5l. and to close the circuit ot a tone device (S8 which includesa winding @il in inductive relation to the winding 5o, whereby the tone transmitted to the calling subscriber indicates the operator has r spondcd. There is also provided a tone device T0 which 'transmits a tone to the calling subscriber vf'hile Vthe wipers 22, 2 and are traveling where by the calling` subscriber can ascertain when an idle responsive device has been selected. rl`he absence ot the tone indicates that the wants of' the subscriber can be expressed without waiting for a reply from the operator. The link connectors ill ustrated l, 4, 9 at the bottom of' Fig fl indicate ope lators position C.

ln other` applications l have shown means whereby calling subscribers may record in formation upon phonographic receivers to. enable operators to receive such information `for the purpose of' establishing connections, the claims in my present application relating specifically to an overllow system, claims of other scope being contained in other applications.

While larly described. the preferred embodiment ot' the invention I do not wish to be limited to the precise details of construction and circuit arrangement shown as changes may readily be made without departing from the spirit ot' the invention, but

Having thus described my invention li claim as new and desire to secure by Letters Patent the followingx l. il telephone exchange system including telephone lines extending vtrom substations to an exchange; link connectors controlled at anuoperatos position for edccting connection between telephone lines;'an additional link connector controlled at the aforesaid position for ellecting connection between telephone lines; and speech record ing and reproducing mechanism adapted to bc associated with calling lines by equipment ot said additional link connector and operable by telephonie current impressed at a calling station upon the calling telephone line to record the calling subscribers speech and. operable 'to convey the recorded speech to the operator at said position.-

2. n. telephone exchange system including telephone lines extending from substations to an exchange; link connectors controlled at an operatoi"s position for effecting connection between telephone lines; speech recording and reprmlucing mechanism; and a conuector having equipment for associating this mechanism. with a calling line, said mechanism being operable by telephonie current impressed at a calling station upon the calli ing telephone line to record the calling' sub- Y scribei"s speech and operable to convey the -\,corded speech to the operator at said. posi tion.

l have herein shown and particu-y lll-lll Cil 3. A telephone exchange system` including telephone lines extending from substations to an exchange; link connectors controlled at an operators position toirelt'ecting connection between telephone dinos; automatically operating switching mechanismi'for connecting these link connectors Awith calling line; and speech recordin aiid reproducing mechanism adapted to be associated with calling lilies b v said additional link coilnector and operable by telephonie current impressed at a callillg station upon the calling telepllolie line to record the calling subscribers speech and operable to convey the recorded speech to the operator at said position. N

4. A telephone exchailge system including` telephone lines extending from substations to an exchange; link connectors controlled at an operators position for etfectillg connection between telephone lines; speech recording and reproducing. mechanism; a com nector having equipment for associating, this mechanism, with a calling line, said mechanism being operable by telephonie current impressed at a callillg station upon the calling telephone line to record the calling subscribers speech alid operable to convey the recorded speech to the operator at said position; .and automatically operating switching mechanism for connecting said connectors with calling lines.

5. A telephone exchange systeln including telephone lines extending from substations to an exchange where operators responsive devices are located; link connectors controlled at an operator"s position tor etfecting connection betweeli telephone lilies; operator responsive device selector switches for associating operator responsive devices free for selection with calling lines throughout theA normal i'ange of operation of such selector switches: and recording devices uadapted to be associated with calling lilies b v selector switches when operated beyond their normal ranges lot opei'ation.

6. vA telepholle exchange system including telephone lilies extending trom substations to an exchange where operators responsive devices are lecated; link connectors coiltrolled at all operator`s position t'or efl'ecting connection between telephone lilies; operator responsive device selector switches for associating operator responsive devices free for selection with calling lines throughout the normal range ot' operation of sich selector switches; and speech recording and reprodlicing mechanism adapted to be associated with calling lines by the selector switches when operating beyond their normal rallges of operation and operable by telephonie current imi'iressed at a calling station upon the calling telepliolie-lilie to record the calling sul'iscribcrs speech and operable to convey the recorded speech to an attendant operator.

i calling lines by equipment ot said additional link connector and including a recording magnet operable by teleplloilic current illipressed at a calling station upon the calling lille; a reproducing magnet adapted for telephonie relation with the oilerators telephone; alld a recording element operated upon bythe recording magnet and operating upon the reproducing magnet.

S. teleplloile exchange sys'em including telephone lilies extending Erri i-substations to all exchange; link connectors controlled at an operators position for effecting connection between telephone lines; speech recordilig alid reproducing mechanism; a connector having equipment for associating this mechanism with a calling line, said mechailism includinga recording magnet operable by teleplloliic current impressed at a calling station upon the calling line; a reproducing magnet adapted for telephonie relation with the operators telephone; and a recording element operated upon by the recording magnet and operating upon the reproducing magnet. ll t). A telephone exchange system including telephone lines extending from substations to ali exchange; link connectors controlled at all operators position for effecting connection between teleplloile lines; automatically operating switching mechanism for connecting tllese link connectors with calling lilies; all additional link connector; speech recording alld reproducing mechanism adapted to be associated with calling lilies by said additional link connector and including a recording magnet operable by telephollic current illlpressed ata calling station upon the calling line; a` reproducing magnet adapted for telepliollic relation with the operator`s telephone; and a recording elelneilt operated upoll by the recording magnet arid operating upon the reproducing magnet.

10., A telepllone exchange syst-em includinfr telephone lines extending troni substations to all` exchange; link connectors controlled at all o,pcl'atoi"s position l'or etl'ecting conl'lcetion between telephone lilies; speech recording and reproducing ll/lechanislll; a connector having equipment for associating this` mechanism with a calling line, said lllecllaliisin including a recording magnet operable by telephonie current impressed at a calliilg station upon the calling lille; a reproducing magnet adapted i'or teleplioilic relation with the opcrators telephone; a recording element operated upon by the recording mag* net and operating upon the reproducing magnet; and auton'iatically operating switching mechanism for connecting said link connectors with calling lines.

l1. A telephone exchange system including telephone lines extending from substations to an exchange where operators7 responsive devices are located; link connectors controlled at an operators-position for eiiccting connection between telephone lines; operator responsive device selector switches for associating operator responsive devices free for selection with calling lines throughout the normal range of operation of such selector switches; speech recording and reproducing mechanism adapted to be associated with calling lines by the selector switches When operating beyond their normal ranges of operation and including a recording magnet operable by telephonie current impressed at a, calling station upon the calling line; a reproducing magnet provided with equipment for effecting telephonie relation with the operzitors telephone; and a recording element operated upon by the recording magnet and operating upon the reproducing magnet.

In witness whereof, I hereunto subscribe my naine this twenty-seventh day of N0- vember A. D., 1912.

lVitnesses E. L. WHITE, G. L. CRAGG.

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