US1681913A - Matic electric inc - Google Patents

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US1681913A
US1681913A US1681913DA US1681913A US 1681913 A US1681913 A US 1681913A US 1681913D A US1681913D A US 1681913DA US 1681913 A US1681913 A US 1681913A
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relay
armature
circuit
line
selector
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M19/00—Current supply arrangements for telephone systems
    • H04M19/001—Current supply source at the exchanger providing current to substations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04Q—SELECTING
    • H04Q3/00—Selecting arrangements
    • H04Q3/0016—Arrangements providing connection between exchanges

Definitions

  • J. wlcKs AUTMAT I C TELEPHONE SYSTEM original Filed may 19, 1924 1Q Smets-sheet '7 @lum ,l La
  • the present invention relates to automatic telephone systems in general, but is concerned more particularly with automatic telephone systems in which talking battery b is supplied from a trunking switch (selector) rather than from a final switch (connector).
  • the first selector repeater supplies battery during the impulsing period to the line relay of the switch to which it repeats impulses. so as to simplify the switch-over operation which takes place after the dialling is completed and before the conversation can start.
  • novel circuit arrangements have been provided to enable a first selector repeater to switch straight through on certain calls like an ordinary two-wire selector, the repeating apparat-us being cut out of I he circuit.
  • special arrangements have been made whereby a system embodying the features of the present invention is made to cooperate with a director system of the gcneral type disclosed in the co-pending application ot Richardson et al., Serial No. 517,- S66, filed March 29. 1922, but more particularly of the type disclosed in the co-penduig application of Nelson, Serial No. 573,175, filed July 8, 1922A
  • Figs. 1-7 when taken together, illustrate a certain amount ot' apparatus in a Inulti-ofiice system composed of two or more so-called inverted77 oflices and one or more offices 0f the ordinary or non-inverted type; Fig. 8, taken in connection with Figs. 2 5, inclusive, discioses certain amount of equipment in a multi-ofiice system in which all otices are of the inverted type; and Figs. 9 and 10, when taken in connection with Figs. 2J?, inclusive, disclose a.
  • Fig. 11 is a layout drawing which shows how Figs. 1J?, inclusive, should be placed together in order to be understood best.
  • Fig. 1 shows the party line ⁇ of substations A and A terminating at the exchange in the rotary line switch LS.
  • the rotary line switch LS has access in common with other line switches in the same group to a number of lirst selector repeaters, of which only one is shown.
  • the first selector repeater of Fig. 1 may be used to establish a connection through the incoming selector repeater, F ig. 2, in an inverted oiiice, the intermediate selector, Fig. 3, and the connector, Fig. .4t to the line of substation B.
  • This first selector repeater may be used also to extend the connection through the incoming'selector repeater of Fig. 6 in an office of the ordinary two-wire type, the two wire selector S, Fig. 7, and the connector C to the line of substation B and may also be used in connection with the intermediate selector of Fig.
  • the first selec lill tor repeater may be used to extend a connection to a subscriber in the local oliice through two intermediate selectors and a connector, in which case talking' battery is supplied to the calling line and called line both by the first selector repeater'.
  • the incoming selector repeater of Fig. 2 is reached over the two-way trunla'. line TL when the latter seized by a lirst selector repeater', such as the one shown in Fig. l.
  • a lirst selector repeater' such as the one shown in Fig. l.
  • line relay G energizes over conductors 2 and 8 and places ground on private normal conductor l at arn'iature 1l, thereby making the calling line busy to the connectors having access to it and closing a circuit through switching relay 5 and stepping mag net 7 in series.
  • Line relay 6 also connects test wiper 14 to the junction ot switching relay 5 and stepping magnet 7 at armature 12.
  • switching relay 5 energizes :immediately, seizing the trunk.
  • switching relay 5 is short circuited by the ground potential encountered on the busy test contart by test wiper 1l and does not energize. ln this case, stepping magnet- 7, which interiulits its own circuit, is operated through test wiper lll and advances the wipers 18-15, inclusive, step by step in search et' an idlel trunk. lhen an idle trunk is reached, which trunk, it will be assumed, is the one coniprising conductors 17-19, inclusive, switching relay 5, being no longershort circuited, energizes in series with steppingmagnet 7. Stepping magnet 7 however, does not energize at this time, on account of the high resistance of switching relay 5.
  • switching relay 5 opens the' test circuit and prepares the holding circuit at armature 9 and at armatures 8 and 1.0 disconnects line conductors 2 and 3 from the winding of line relay 6 and ground, respectively, and extends them by Way of wipers 13 and 15, the bank contacts upon which they are standing, conductors 17 and 19, and the normally closed contacts controlled by armatures 54.
  • Line relay 82 now energizes over the calling line and closes its repeating contacts at armature 58 whereupon relays 39 and 40 energize in series over the following circuit: from ground by way oi? relay 8., resting contact and armature 57, normally closed contacts controlled by armature 79, armature 5e and its resting contact, working contact and armature 58, and relay to battery. Relays' 89 and LlOthereupon energize and the Ylatter opens a point in the circuit of relay 35 so as to prevent the latter l'rom operating upon the energization of switching relay lll, which to taire place subsequently.
  • telease relay 88 'hereupon energizes; opens a point in the circuit of release magnet l2 and prepares a circuit for vertical magnet 48 at armature 62; and at armature 61 places ground.
  • armature 58, thereby establishing the usual holding circuit i'or switching relay 5 et the line switch LS beiore the slow acting line relay (i has had time to deenergize.
  • the first selector repeater as a fur-i ther result o1 the energization of release relay 83, it places ground upon conductor 5l armature through the low resistance lower winding of the marginal relay 81, thereby closing a circuit through the normally closed contacts controlled by armature :tor the slow acting relajfY Relay 84 thereupon euel'gizes, but relay 8l does not energize on account of the relatively high resistance oi' relay 34.
  • line relay 32 When the calling' subscriber i'nanipulates his calling device in accordance with the first digit in the desired number, the circuit of line relay 32 is opened' a corresponding number of times. Each time its circuit is opened, line relay 82 deenergizes momentarily and closesl at armature 59 a circuit through arn'lature G2 and its working contact and armature 8d and its restingcontact for vertical magnet 48. By the operation of vertical magnet 48, the wipers 86-88, inelusive, are raised step by step and come to rest opposite the desired level of bank contacts. llelay 87 is energized in multiple with vertical ⁇ magnet i8 through the resting lill) lll) ,throughout the vertical movement.
  • relay 37 closes at arn'iature 72 a circuit through armature 82 and its resting contact and off normal contacts tor stepping relay 38.
  • Stepping relay 3S thereupon energizes and completes at armature 74 a locking circuit tor itseltthrough the interruptor contacts 50 and the off normal contacts 45 and at armature 75 prepares a circuit for rotary magnet 49.
  • spring 44 disconnects the upper talking condenser from ground through the dial tone conductor and connects it to the lower winding of the line relay. This bridges the upper talking condenser right across the line. This is done so as to permit the line relay 32 to respond more readily to the interruptions produced in its circuit.
  • relay 37 deenergizes and completes the circuit of rotary magnet 49 at the normally closed. contact-s controlled by armature 72.
  • Rotary magnet 49 thereupon energizes and advances the wipers Sti-S8, inclusive7 into engagement l with the first set of bank contacts in the selected level and, near the end et its stroke, opens the locking circuit ot stepping relay 3S at the interruptor contacts 50.
  • Stepping relay 38 thereupon deenergizes and opens the circuit of rotary magnet 49 at armature 75, whereupon rotary magnet 49 deenergizes also and closes its interruptor contacts 50 again.
  • switching relay 41 In case the trunk terminating in the first sot of bank contacts is idle, switching relay 41 now energizes and seizes the trunk. Assuming the trunk to be busy, however, switching relay 41 is short circuited by the ground potential encountered upon the busy test contact by test wiper 87 and does not energize. Stepping relay 38 energizes through test wiper 87 and closes 'he circuit of rotary magnet 49 again at armature 75, whereupon rotary magnet 49 energizes again and advances the wipers into engagement with the second set ot' bank contacts.
  • switching relay 41 opens the test circuit and places ground upon test wiper S7 at armature 30, thereby making the seized trunk busy iinniediately to the other switches having access to it; disconnects armature 72 oi relay 37 at arinature 82 so as to prevent a further operation of stepping relay 38; prepares a circuit ttor relaY at armature 81; disconnects the operating conductor from vertical magnet 48 at armature 84 and extends it to relay 34 at the saine time disconnecting the latter from the grounded conductor 51; and at 'armatures 79 and 85 connects up the wipers 86 and SS, at the saine time opening the initial circuit of relays 39 and 40 at the normally closed contacts controlled by armature 79.
  • Relays 39 and 40 do not deenergize at this time, however, but are held up over the trunk line TL and through the two windings oi relay 107 oit the incoming selector repeater, 2, in series, relay 107 beiA g ln across unlline 'lli through armatures 121 and 122 otl the cutotl relay 101 and through the normally closed contacts controlled by armature 140 ol rel-.1 109 and the oft nornal contacts iv l energizes over the trunn line TL and in series with the relays 39 and and closes at armature 134 a circuit for the repeating relay 102 through the resistance 117.
  • Relay 102 thereupon energizes and closes at armature a circuit for release relay 103 and closes at armature 123 a circuit through relay 109 as follows: from ground by way or the upper winding of relay 109, normally closed contacts controlled by armature 143, armature 123, upper winding of relay 105, and the upper winding of relay to battery.
  • Relays 109, 105, and 10G energize over this circuit and relay 109 locks itselit' at ari'nature 139 to ground through armature 129 and its working contact of relay 105; shunts the upper talliing condenser across the tall-:ing circuit at armature 137 and consequently around the line relay 107 so as to improve the impulsing circuit; short circuits the resistaiice 117 at armature 133 so as to furnish more current to the repeating ⁇ relay 102; connects the upper winding o1' line relay 107 directly across the line at armature 140 at the saine time disconnecting the lower winding of the rclay; prepares a locking circuit itor stepping relay-108 at armature 141, thereby grounding 011e terminal ot the lower talking condenser; and at armature ,lisconnects the left hand terminal ot the now grounilid lower talking' condenser irom the lower talking conductor and connects it through the low resistance
  • line relay 201 now cnergizes and closes a circuit from the grounded release trunk conductor 162 tor the combined release and change-over relay 203 atr armature 221 in series with the resistance 202.
  • Relay 203 thereupon encrgizes; closes a locking circuit Vlor itself at armature 223, prepares a circuit lor stepping relay 204 at armature 224, at the same time opening a point in the circuit of rotary magnet 210; and at armature 225 prepares a circuit for vertical magnet 209 and opens a point in the circuit of release magnet 206.
  • tor stepping relay 204 which includes the Working contact and armature st aud contacts 207 of release magnet206.
  • Relay 204 upon energizing, prepares a circuit lior rotary magnet 210 at armature 226 and at armature 227 closes a lockingcircuit l'or itscll from ground by way of the resting eentact and armature 231 and through the interruptor' contacts 211 of the rotary magnet 210 and ott normal contacts 212.
  • line relay 201 comes to rest in an energized condition and relay 203, being short circuited, deenergizes and completes the circuit of the rotary magnet 210.
  • Rotary magnet 210 thereupon energizes and advances the Wipers 233-235, inclusive, into engagement with the first set of bank contacts, at the same time opening the circuit of stepping relay 204 at contacts 211.
  • the remaining part of the trunk selecting operation is the same as has been described hereinbefore and the intermediate selector selects an idle trunk, which trunk, it will be assumed, is the one comprising conductors 236-238, inclusive.
  • switching relay 205 energizes over the following circuit: from ground by way of the grounded release trunk conductor 162, switching relay 205, interrupter contacts 211, off normal contacts 212, and stepping relay 204 to battery.
  • switching relay 205 opens the test circuit and grounds test wiper 234 at armature 229; disconnects ground from armature 222 of line relay 201 at armature 231; at armature 230 disconnects the deenergized relay 203 from the release trunk conductor 162; and at armatures 228 and 232 connects up the line wipers 233 and 235, at the same time disconnecting line relay 201.
  • Relay 303 thereupon energizes and disconnects the operating conductor 315 from the rotary magnet 311 and connects it to vertical magnet 312 at armature 329 and atV armature 327 closes a point in the circuit of release relay 302.
  • line relay 301 which is bridged across conductors 236 and 238 through the resting contact and armature 338 and off normal contacts 309 and the normally closed contacts controlled by armature 325, energizes over conductors 236 and 238 and in series with the upper windings of relays 105 and 106 of the incoming selector repeater, Fig. 2.
  • relay 301 completes a circuit at armature 321 from the grounded release trunk rconductor 237 through armature 327 and its Working contact for release relay 302.
  • Release relay 302 thereupon energizes; connects the release trunk conductor 237 to the local holding conductor 316 at armature 323, at the same time removing ground locally from conductor 316; opens a point in the circuit of release n'iagnet 308V and locks itself to conductor 316 at armature 324 through the resting contact and armature 332 and the resting lou result of the energization of switching relay 306, it disconnects conductor 236 from line rela 301 and connects it instead to the small con enser 313 so as to permit a small amount ⁇ of the ringing current to pass back to inform the calling subscriber that the called subscribers bell is being rung.
  • Switching relay 30G also opens the locking circuit ot release relay 302 and prepares a locking circuit for ring cut olii' relay 303 at armature 341.
  • Release relay 302 now deenergizes and disconnects the lower terminal of line relay 301 from conductor 238, at the same time closing a point in the talking circuit.
  • Relay 105 upon deenergizing, opens the locking circuit ot' the lower winding of the change-over relay 109 at armature 129, whereupon changeover relay 109 deenergizes and places the talking condensers in their proper position in the talking circuit at armatures 137 and 142; opens a further point in its own locking circuit and prepares a holding circuit for release relay 103 at arn'iature 139; removes the shunt from around resistance 117 at armature 138 so as to reduce battery consumption and so as to keep the low wound relay 102 from heating up, and at armature 140 disconnects the junction of the two windings of line relay 107 from the lower talking conductor, at the same time connecting the lower terminal ot' the lower winding' out relay 107 to4 the lower talking conductor through the high resistance 115.
  • the two windings of relay 107 and resistance 115 The two windings of relay 107 and resistance 115
  • Relay 40 upon deenergizing, closes at armature 78 a circuit for relay 35 as follows: from ground by way of armature 64 and its resting contact, ar1nature 78 and its resting'contact, armature 81 and its working contact, normally closed contacts controlled by armature 66, and relay 35 to battery. Relay 35 thereupon energizes; closes a.
  • ring cut oit relay 303 of the connector When the subscriber at substation B res sponds to the ringing of his bell by removing his receiver, ring cut oit relay 303 of the connector energizes in the usual manner and closes a locking circuit for itself at armature 328, and at armatures 326 and 330 disconnects the line wipers from its own upper winding and ground and connects them to the talking conductors 236 and 238.
  • relays 105 and 10o now feed battery tothe called substation B and, consequently, relay 105 cnergizes over the called line., but relay 10G being differentially wound dees not energize at this time.
  • relay 105 Upon energizing relay 105 shunts high resistance 115 at arma ture 130 through armature 133 and its rest ⁇ v ing contact.
  • the marginally adjusted meter 1G is operated to register the call.
  • This meter may be used, as shown, as a totalizer of outgoingcalls on a party line, or it may be used on au individual line as an indicator of the amount oiE charge to be assessed the subscriber on that line.
  • the meter magnet 16 energizes and advances the associated number wheels in the usual manner to register the completed connection.
  • the slow acting relay 37 deenergizes after an interval ⁇ responsive to its circuit being opened at armature of relay 36, and removes the booster battery from the release trunk conductor 18 at armature 71, at the same time reapplying direct groundto the said conductor 1S,
  • the meter magnet 10 may be adjusted to maintain its ⁇ armature attracted after the booster battery is removed and until the calling line becomes idle, or if desired it may retract its armature when the booster battery is removed.
  • the calling and called subscribers may now converse witheach other as desired, and when they have iinished conversing they replace their respective rcceirers.
  • the slew acti release relay 32% deskyes, removes ground from the .blesse trunk conductor 18 at arma 'e 0l. and also opens the lockingv circuits or relav lz'iaiid 30, permitting ⁇ these relays lo (lee-licencie. Responsive 'to ⁇ the removal et the freund potential Vfrom releazsie trunk conductor l0 the switching lrelay of the line switch ,liti deenergi'fzes.
  • circuit oit release magnet 42 is opened at ofil normal contac 4S when the switch Wipers reach their normal position. in the incem selector repeater., llig. 2, result of the above mentioned openingf ,i "he circuit et repeating' relay llli by line relay i0?. relay 102 (leen-ei "ses and opens the rirenit ol release relay i0l at armature i. .al”y. the slow acting relay 104 any par,-
  • this doeg nos have l, .rzi'i 1 t ai 1 f .n nanny .n uns time.
  • Release magnet 206 also opens the contacts during the .releasing operation due 234 rotating back over grounded o test Wiper et contact in the connector, Trig. 4, responsive to the l/znergization ot relay 300, release magnet 0.7 energines through oli normal contacts 00, resting contact and armature 324, restn contact and armature 332, resting Contact and armature 341, and the normally closed contacts controlled by armature 3 3 to battery and restores the switch to normal in the usual manner. The entire connection is nonv released.
  • the subscriber at substation A removes his receiver and it will be assumed that the line sivitch LS selects the iirst selector repeater shown in the drawing, and that when the sul criber manipulates his callingV device in accordance with the .first digit in the desired number the iirst selector regeater selects the trunk comprising conductors )9l, inclusive, extending to the intermediate selector, Fi 5.
  • This intermediate selector is denoted by a dotted reci ngle, but may identical with the intermediate selector shown at Fig. 3.
  • the intermediate selector raises its wipers 400403, inclusive, opposite the desired level of bank contacts and selects an idle trunk, which trnnlr it u'ill be assumed is the one comprising conductors 404406, inclusive.
  • line relay 412 of the reverting call sviteh energizes over conductors 404 and 406 and closes at armature 436 a circuit for release relay 415.
  • Release relay 415 thereupon energizes and places ground on cogiductor 40T at arn'iature 403, and armature 442 opens a point in the circuit of release magnet 423 anc1 a clrcu stepping; magnet 424, switch for operation.
  • the circuit ot line relay 412 is op responding nuinher of tinies in he descrioed Manner at the .first seltor repeater.
  • Each tune line relay 4 2 deenergi'zes responsive to one of these interruptions, it closes at armature a circuit through (firinatnre 442 and its Working' contact, nornially closed contacts controlled by armature 445, and series relay 417 for stepping ⁇ .magnet 424.
  • Wipers 421 and 422 are advanced step by the herein step and come to rest on the harm coi ⁇ ets in which conductors 469 and 410 terin late.
  • Relay 41.7 is energized in series with stepping magnet and, heingj slow acting. maintains its armature attracted throughout the s; ping movement.
  • relay .i l closes a locking circuit for itself at armature 447, and opens a point in the circuit ot relay 411 at armature 446.
  • contacts 405 closee whereupon relay 416 e-.iergizes and a circuit tor release magnet at armature 444, at the san e tii'ne preparing a circuit tor relay 411.
  • relay 414 nu l sw.. n. all ot which are to the rlease trnnl conductor of :ish/ed ci'inneetion.
  • Upon energgr 413 locks itself to the grounded con actor N7 at armature 439; sepits arati' the tivo windings of line relay 412, and connects the upper Windingr ⁇ to battery and the lower winding to ground at armatures 43S and 437, respectivel g and at armature 440 placesl ground directly on release trunl: conductor 405 independent of its o'ivn upper winding, at 'the same time disconnecting ⁇ relay 414 which promptly deenergrizes anl clone-1 a circuit through the Working contact and armature 4I-i3 and the normally closed contacts controlled by armature lor the ⁇ wi per connecting relay 451.
  • Relay 451 therciu'ion energizes and closes a local locliingf; circuit tor itseli2 at armature 452, at the :ame time opening its initial circuit.
  • llela, 0 also connects up the line wipers and 421 at armatures 451 and 453, re- :aieclircly 'lhe wipers 421 and are non' cr ted to the common rinsino' leads 40!) ai 40, over which rii current is rejected alternately.
  • lfh A ng currentl ons bach over the established connection o the calling' line and operates the bells at mitin-'tations A and il alternately.
  • the ring cut oil' relay 419 inthe reverting, ⁇ call switch, Fig. 5 operates in the Vveli lrnoivn manner and closes ari'i'iature 450 a circuit :tor relay 41S which thereupon energizes and locks itsel't to ground through ott normal contacts 425 at armature 449 and opens the circuit ot relay 411 at armature 448.
  • Relay 411 now deenergrizes and opens the circuit ot release relay 415 at armature 482 and shifts the conductors 404 and 406 back to the line relay again, thereby removing, ⁇ the ringing current from the calling,y line.
  • Line relay 412 which is now supplied With battery and ground locally, now t'ceds talking battery to the calling,- line and accordingly, energized and closes a circuit tor release relay 415 at armature :30 heitere it has had time to deenergize.
  • relay 415 As a further result of the deenergization of relay 415, it removes ground from the local locking conductor 407v at armature 443, whereupon relays 413 and 420 deenergire.
  • Relay 413 upon deenergizing, removes lfreund Afrom release trunk conductor 405 at armature 440, whereupon the intermediate selector is released in the hereinbefore described manner.
  • switch through relay 31 ot the first selector repeater deenergizes and closes the release magnet circuit at armature 56, whereupon the irst selector repeater is restored to normal in the hereinbetere described manner.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Interface Circuits In Exchanges (AREA)
  • Monitoring And Testing Of Exchanges (AREA)
US1681913D 1924-05-19 Matic electric inc Expired - Lifetime US1681913A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US476279XA 1924-05-19 1924-05-19

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US1681913A true US1681913A (en) 1928-08-21

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US1681913D Expired - Lifetime US1681913A (en) 1924-05-19 Matic electric inc

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US (1) US1681913A (enrdf_load_stackoverflow)
DE (1) DE476279C (enrdf_load_stackoverflow)
FR (4) FR30806E (enrdf_load_stackoverflow)
GB (1) GB263210A (enrdf_load_stackoverflow)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3919238A1 (de) * 1989-06-13 1990-12-20 Voest Alpine Ind Anlagen Spueleinrichtung fuer ein metallurgisches gefaess

Also Published As

Publication number Publication date
FR32350E (fr) 1927-11-28
FR32351E (fr) 1927-11-28
GB263210A (enrdf_load_stackoverflow)
FR30806E (fr) 1926-10-02
FR600994A (enrdf_load_stackoverflow) 1926-02-19
DE476279C (de) 1929-05-21

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