US1575326A

US1575326A - Registering mechanism

Info

Publication number: US1575326A
Application number: US669252A
Authority: US
Inventors: Owen C From
Original assignee: Western Electric Co Inc
Current assignee: AT&T Corp
Priority date: 1923-10-18
Filing date: 1923-10-18
Publication date: 1926-03-02
Anticipated expiration: 1943-03-02

Description

March 2 1926. 1,575,326

O. C. FROM REGISTERING MECHANISM Filed oct. 18, 1923 2 Sheets-Sheet 1 ,Y u. xk W `Q\\\ b* fm v 4W p v W WV S H -w .n M v W .GV i l W L# 0f@ ILL J h p M@ NS h h ,W m; A v v u v v L L bv n l L AN; Hill .l.l QS QS l? G E E B IINWNI n s wm- S :twg n l n r n r \M\ .Ml

March 2 1926.

O. C. FROM REGISTERING MECHANISM Fi'led O'Gt. 18-, 1923 2 Sheets-Sheet 2 Patented Mar. 2, 1926.

unire-n sirares PATENT Geelen.

Application filed` Octohen 18, 1923. Serial No. 669,252.,

Fb cZZ`wLom itmay concern:

Be it known that I, OWEN C. FROM., a citi zen of the United States oi' America,.residing at New York, in the county of New York, State of New York, have invented certain new and useful` Improvements in Registering Mechanisms, of which the tollowing is a full, clear, concise, and exact description.

This invention relates to telephone exchange systems, and" more particuiarly, to recording and registering mechanisms4 tor use therein.

In telephone systems ofthe automatic and semi-automatic types, it is found desirable tov register on! apparatus located at the centraloiiice the designations of wanted lines or circuits. A designati.on` thus registered may later be used for governing the selective operations of switches to extend the required connection or orcontrbiling welllinown indicating mechanism.4

The ohject of the invention is to provide a unitary registering mechanism ot' simple construction' and' eiiicient in operation for registering all" digits of called designations.

A feature of' the invention relates to the provision of a registeringmechanism oi the coordinate switch type, the verticali` bars of which are operated inw different combinations in response to each series oi' impulses and' the horizontal. bars of which: are operated'` in succession in response toA aprogressive series of impulses to ope ate registering elements. forV recording the digit values of' the several' digits of" call designations.y s

further feature of the invention relates to the provision ini a unita-ry registering mechanism ofA a group ofregisteringA elements for each series of impulses. to be reg-4 istered and of means; for operating said elements in various combinations to translate digit values of a decimal character into registrations'of a non--decimall or code cha-racter.

This andi other features oi'- the invention will be more clearly apparent from: a consideration of' the fr illowingl description taken in connectionA with theA accompanying drawings and` the appended claims.

lteierrii'1g` to thedrawings, Figs. i and 2, taken in conjunction with each other, with Fig; 2 at the right of Fig. l, illustrate so` much of a telephone exchange system incorn porating a receiving, recording and registering mechanism. oi' a type embodying. the present invention as is necessary tor a complete understanding thereof. Fig. l' discloses a sub'scriberjs line terminating in a switch at the central office, otlierswitches for extending the line, together with details of an impulsereceiving and recording mechanism responsive to designation impulses for establishing the record: thereof at the central oiice.

Fig.4 2' shows a unitary registering mechanism of the coordinate type comprising' eight groups of registering elements' corresponding'to eight digits oa called designation, the four vertical' bar magnets in: the

'lower portion oi the figure, the eigl'it horizontal bar magnets at the immediatev leit of the several groups otregistering elements and a chain of progression rela-ys on the left of the horizontall magnets;

While applicants invention has ior` convenience been applied to a particular type oi" automatic ktelephone system such asl disclosed, for example, in the patent to Si. B.

lli/williams, Jr. No. 1",t l"7,331',V issued Dec. Q,

19%,.it is to he understood. that it is equally applicable to other types of systems.

In the system disclosedk the subscribers iine 100 extends to the centra-l office `and there terminates in a line switch 10'12 diagrammatical'lyshown. The' line switch 102 is adapted to extend the subseribers iine 100. to any of a number of trunlisyoneoi which 104.', 105. is illustrated extendingto a irst selector switch 106. Such switch 106 may be of thesame character as thel line switch 102 and servestoxextend the incoming trunk 104,105 to other trunks such as 11e/i2, 143iA andfv 144. Obviously vtrunks 142, 14:3 and` vll'fi may leac to succeeding selective devices where they may be selectivelyv connected to other trunks andI so on unti-li the desired connection is completed".

Also located at the central oiiice is an impulseI receiving and record-ing` mechanism be any desired number of these-recording;

mechanisms arranged to serve a group of subscribers lines, the particular one to be taken for use at any particular time depending upon its busy or idle condition. A selecting switch 1 03 is provided for associating an idle one I of the recording` mechanisms comprising the remainder of Figs. 1 and 2, with the particular trunk 104, 105 to which the calling subscriber-s line has been extended by the switch 102.

The

switches

102, 103 and 106 may be of the general type shown and described in detail in the patent to C. L.-Goodrum, No. 1,551,024, issued August 25, 1925, or o any well-known type such as power driven selectors, or switches in which multi-contact relays are employed for building up the connections with means for selectingy and operating the necessary relays. vllhile the recording and registering mechanism embodying the invention is particularly adapted for use in systems employing switches of the character illustrated, it is to be understood that any other suitable form of switching device may be used instead.

The registering mechanism shown in Fig. 2 may also be of the same general type and operate ina similar manner to the switching device, described in the hereinbefore mentioned patent to C. L..Goodrum. Having described the apparatus to be employed and the generalmode of its operation, a detailed description will now be given. of the operation of the system. It y will ,be` assumed that the calling subscriber 100 desires to obtain connection with a line whose otfice'and numerical designation is BIN M35-1V, and to initiate a call, re-

moves his receiver from the switchhook. lNhen the receiver is thus removed, the line switch 102 operates to extend'the calling line fto an idle trunk 104, 105. Moreover, the selecting'switch 103 operates to associate f the idle recording mechanism shown in detail withthe selected trunk 104, 105. In response to these operations a circuit is closed from battery through resistance 112, .right winding ot impulse relay 111,

vthrough the switch 103, conductor '105,

through ythe Vswitch 102, over the Vloop of the calling line 100 and returning through the switch 102, conductor 104, through the switch 103, left winding of the balancing coil'113 to ground. Relay 111 operates and closes a circuit from ground through its armature and front contact, winding of slowto-release relay 115 to battery causing the operation of relay 115.

armatures a circuit is closed from battery,

left winding of relay 119, inner left contact of relay 119, o uter right back contact of relay 121 and outer left back contact of relay 122, in parallel, outer right back contact of relay 122outer right back contact of relay 123, outer right back contact of relay 124, outer left front Contact of relay 125, windings ot relay 121 in series to ground. This circuit is not eiifective toenergize relay 121 at this time due to the direct connection in shunt of the windings oit relay 121 to ground at the front contact of relay 111. Nothing further occurs until the calling subscriber manipulates his dial in response to the dialing tone which is inductively transmitted over theV dialing circuitJ above traced from the right winding of balancing coil 113.

Then the subscriber operates his dial 101 to send the impulses corresponding to the rst code letter B of the office designation of the wanted line, thefletter having a digit value of 2, the circuit of relay 111 is opened twice causing relay 111 to deenergize and energize twice in succession. When relay 111 deenergizes it opens the circuits of relays 119 and 115. Relay 115 being slow-torelease maintains its armatures attracted during the interruptions fof its circuit. Vhen, therefore, relay 111 closes its'bacl; contact, a circuit is closed from ground, back contact of relay 111, right contact of vrelay 115, winding olf relay 118 to battery.

Relay 11S operates and at its lett armature opens the initial energizing circuitv above traced for relay 125. At its right armature relay 118 closes a circuit from ground, right front contact of relay 118, inner lett contact of relay 114 to battery through the winding of relay^117. VRelay 117 energizes and .closes a locking circuit for itself from battery through its winding, inner left contact of relay 114 to ground, at the inner left front contact of relay 117. left armature relay 117 also opens the initial energizing circuit of relay 125 at another I point.

Meanwhile, relay 119 whose originalenergizing circuit was opened when relay 111 retracted its armature is maintained energized over the circuit previously traced for relay. 121.L The shunt around this lrelay having now been removed, relay 121 attracts its armatures closing a locking cir- At its outer cuit tor itself through its right winding and inner right front contact to battery on: conductor 133.r This circuit shunts theoriginal energizing circuit through relay 119 and relay 119 thereupon deenergizes. Ait its outer left contact relay 119 connects ground to the circuit of relay 118 supplementing the ground freni the back contact of relay 111, thus shortening the open circuit period* over which relay 118 must hold its armatures attracted.

Relay 121 also closes a circuit from ground, right winding ot relay 119, inner lett Contact oi relay 121,. left winding of relay 125, inner right iront contact of relay 125, conductor 133let`t back contact ot relay 11a, resistance 120 to battery. The current in this circuit flows in the opposite direction to the original energizing current ilowing through the lett winding. The windings of relays 125, as well as those oi the other counting relays, are so wound that these opposing currents neutralize one another and relay 125 retracts its armatures. The other counting relays operate in a similar manner, that is, they operate through their two windings in series, locl; through one winding and release due tov differential current through their two windings. The current inthe above traced releasing circuit has a diiii'erential el'lect upon the lett winding of relay 119 causing that relay to release more quickly than it otherwise would. The magnetic etl'ect o1 the right winding is not sufficient to reenergize the relay nor materially hinder its energization when the lett winding again becomes effec*- tiye. vWhen relay 111 attracts its armature at the end ot the first interruption of its circuit, the energizing circuit for relay 119 is again closed and this relay operates. A circuit is now closed from grounded battery, lett winding of relay 119, inner lettfront Contact of relay 1.19, outer right front contact otr-clay 121 and in parallel through the outer right and lett bacl; Contact of relay 122, thence through the outer' right back contact of relay 123, outer right back contact of relay 124, outer left back contact of relay 125, through the two windings of relay 122 to ground. Relay 122 is shunted by direct ground at the armature and front contact of relay 111 at this time and does not attract its armatures.

lVhen relay 111 retracts its armature in response to the second and last interruption et its circuit by the dial 101, the shunt around relay 122 is removed and that relay attracts its armatures. At its inner right front contact relay 122 establishes a locking circuit from ground through its right winding to batt-ery over conductor 133, this circuit shunting relay 119 and that relay retracting its arniatures.

Relay 122 also closes a circuit through the right winding ot relay 119, inner lett front Contact of relay 1122, left winding ot relay 121i, inner'right armature ot relay 121 to battery over conductor 138. This circuit places the Wind-ings of relay 121 in opposition so that relay 121 thereupon releases.

At the close of thevsecond opening ont'- they circuitof relay 111 that relay again operates causing, in turn, the operation of relay 1.1191 and the closure of a circuit tor relay 123 which circuit is ineffective due to the shunt closed at the front contact of relay 111. lt is to be not-ed inr` connection with the foregoing description of the operation ot' relays 117 and 125v that relay 125 releasesy prior to the operation ot relay 117` so that the circuit which would` otherwise exist for operating relay 126 is not at this time effective; The circuit ot relay 111 is maintained for a comparatively long time between the sendingV of the first and second digit series oi' impulses and; relay 119 being energized ground. is removed from the circuit ot relay 118 long enough to permit that relay te retract its armatures. Relay .118 on deenergizing. closes a circuit from ground at its right back contact,louter lett contact oft relay 111, inner right contact of relay 117, back Contact ot' relay 148, left back Contact of relay 126, outer lett back contact of relay 124", outer left back contact of relay 121, conductor 1337, Vertical bar magnet 202 to battery. Magnet 202 attracts its armature, rotates the vertical bar ot the registering mechanism associated therewith, and establishes a circuit fromV ground at its armature contact over conductor 205, inner right baci: contact of transiter relay 207 to battery through the winding of horizontal bar magnet 200. Magnet 206 energlzes in this circuit closing` a locking circuit for itself ex-` tending through its Winding and the winding of relay 207 in series, the outer liront Contact oit' magnet 206,. conductor 1415 to ground at the left contact ot relay 115. vlilclay 207 being shunted by direct ground at thearmature Contact ot magnet 202 does not energize at this time. li/agnet 206, upon energizing, alsorotates the horizontal bar associated' therewith, which in conjunction with the operated Vertical bar operates the card 222 located at the junction ot the two operated bars, in the well-known manner.

lli/ith counting relay 122 energized a circuit is also closed which may be traced trom ground at the front contact ot relay 111, inner'lett front contact of relay 119, lett front Contact of relay 122, conductor 14:7, inner normal contacts oiE the preliminary pulse relay 200, winding of relay 200, conductor 1415 to ground atthe lett contact of relay 115. Relay 200 energizes and locks over the alternate Contact of its inner lett armature, conduct-or 1341, resistance 120 to.

vroe y the sender is dismissed and at its outer left front contact joins conductor 138 to the conductor 223 leading to the Vertical magnet 201.

In this connection it is to be noted that the Vertical magnet 201 is not operable until after at least two impulses have been recorded on the counting relays. For eX- ample, if a single impulse is recorded in the first digit series, then at the end of the series only the counting relay 121 remains energized and since the counting relay 122 has not energized, the circuit previously traced for relay 200 has not been completed. Therefore, when relay 118 deenergizes upon the termination of the single impulse, the circuit previously traced from ground at the right back Contact of relay 118 to the outer left armature of relay 121 extends over the front contact of this armature, conductor 188, the outer back contact of relay 200, conductor 135 to battery through the winding of relay 114. Relay 114, thereupon, energizes opening the holding circuits of counting relay 121 and relay 117. These relays thereupon release. Thus, if only a single impulse is received in the first digit series, no magnets of the registering mechanism are operated. The circuits are designed to function in this manner in order that a false registration may not result from' an initial preliminary impulse resulting from conditions existing on the line when it is cut through to the recording circuits, or resulting from the acciecntal operation of the switohhook at the substation.

As soon as magnet 206 operates following the recording of the first `code letter, a circuit is also closed from battery, winding of relay 114, conductor 185, `left baclr contact of transfer relay 207, inner front contact of magnet 206, conductor 145 to ground at the left contact of relay 115. Relay 114 energizes opening the holding circuit of relay 117, and at its right back contact opens the locking circuit of counting relay 122. As soon as the relay 117 deenergizes the circuit previously traced for magnet 202 is opened permitting the restoration of the operated vertical bar. lith magnet 202 deenergized the shunt around the winding of transfer relay 207 is removed and relay 207 energizes in the holding circuit of magnet 206. Relay 207, upon energizing,opens the circuit of relay 114 which thereupon releases. The operated card 222 is now held operated by the horizontal bar which was operated by magnet 206. r1`he recording and registering circuits are new in condition for the receipt of the second series of impulses.

As it has been assumed that the second code letter is l having a numerical equiva-l lent of 4, the subscriber now manipulates his dial 101 to cause four circuit interruptions of his line circuit. lV ith relays 118, 117 and 114 deenergized and relays 111 and 119 energized, the above traced circuits for operating relay 125 and preparing relay 121 for operation are completed. In response to the iirst interruption caused by the dial 101, relay 111 releases its armatures and relays 118, 1.17 and 121 operate. Relay 121 locks and closes the differential circuit for releasing relay 125. In response to the second interruption, relay 122 operates and causes the differential release of relay 121 as before described. In response to the third interruption relay 123 is operated over a circuit extending from batter left winding and inner left contact of relay 119, outer right back contact of relay 121, outer right front .Contact of relay 122 to ground through both windings of relay 128. Relay 123 energizes and locks from ground through its right winding and inner right contact to battery on conductor 133, thereby causing the differential release of relay 122. In response to the fourth interruption, relay 124 is oper-l ated over a circuit extending from battery, left winding and inner left contact of relay 119, outer right back contact of relay 121, outer right back conta-ct of relay 122,l outer right front contact of relay 128 to ground through both windings of relay 124. Relay 124 thereupon energizes and locks through its right winding and inner right contactto battery on conductor 138, thereby causing the differential release of relay 128.

Relayv 117 having operated following the energization of relays 118 and 125, when, therefore, the second digit series of interruptions ceases and relay 118 deenergizes,v with counting relay 124 operated and the remaining counting relays deenergized, a circuit is closedrfrom ground at the right back contact of relay 118, the outer left back contact of relay 114, the inner right front contact of relay 117, the back contact of relay 148, the left back contact of relay 126, the outer left front contact of relay 124, conductor 189 to battery through the vertical magnet 203 of the registering mechanisin. Magnet 208 operates the vertical bar associated therewith and at its armature contact connects ground to conductor 205. A circuit is new established for the horizontal bar magnet 208 extending from ground on conductor 205, the inner right armature and front contact of relay 207, the inner right back contact of relay 209 to battery through the winding of horizontal magnetV 208. h'lagnet 208 thereupon energizes locking itself in series with transfer relay 209 over a circuit extending from battery, winding of magnet 208,winding of relay 209, outer front contact of magnet 208 to ground at the outer right contact of relay 207. vRelay 209 does not, however, operate in this locking circuit since it is shunted at the contact of magnet 208. Magnet 208, upon energiz- Cil 'leasing ,the operated Vertical bar.

ing, rotates the horizontal ybar associated therewith, which in conjunction with the vertical bar operated by magnet 203 operates the registering card 224 `located at the junction ot these two bars. 1n addition magnet 208 at its outer contact closes a circuit for :rela-y 114 vextending from battery, Winding of relay 114, conductor 135, left front contact of relay 207, lett back contact of relay 209, .armature and contact ot `inagnet 203 to ground `at the outer right front contact of relay `207. -elay 114 energises and functions .as betere 4to release relay 117 and the operated counting relay 124. As soon as relay 117 deenergizes the operating circuit `et magnet v203 is opened thereby re- The release o1i `magnet 203 .also removes the shunt from the Winding ot transfer relay 209 which `thereupon energizes .in the locking circuit ot magnet 208 opening at its left back contact Vthe circuit ot relay 11.4. The operated card 224 `is new held operated by the bar which was operated by .magnet 208. The recording and registering .circuits are new in condition to receive the third series et impulses.

The subscriber next operates .his dial 101 to interrupt `thecircu'it'otl relay 111 siX times in accordance with the 4third ycode vletter which was assumed to be M. At the end ot the fourth circuit interruption relays 118, 117 and the .counting relay 124 are all Iin an v energized condition as described .in connection with the preceding digit series and an energizing circuit is prepared through `the operation of relay 124 .for the counting relay 125. Upon the .ii'fth interruption relay 125 energizes kover a circuit from battery throughthe 'left Winding .and inner left armature contact of relay 119, the outer right back contact ot' `relays 121, 122 .and 123, the outer right front contact of relay 124 to ground through .both Vwindings of .relay 125. Relay 125 thereupon locks from ground through its inner right tront'contact to battery on conductor `133and closes a circuit through the left Winding ot relay 124 for causing it Yto be diierentially released. Relay 125 at its'outer 'right Contact also closes a circuit from ground at .the outer right colltact et relay 117, outer right contact ,et re- 'lay 125, right back contact `of relay 127 to battery through the Winding of relay 126. Relay 12G1energizes'and closes a locking Cir-- cuit for itself extending through itswinding and the winding oft' relay 127, the right :con-

ztact oi' relay 126 `toV ground at the outerright contact ot relay 1.17. ARelay 127 however, does not `energize in 4the .locking circuit or" relay 126 since it is `shunted by direct ground connected throughthe outer .right contact ot relay 125.

In response to .the lsixth rand last interruption ot thecircuit ot relay 111, a circuit iscstablished from battery left Winding and inner lett Contact of relay 119, outer right back contact et relays 121, 122, 123 and 124, outer lett `liront Contact of relay 125 to ground through the windings of relay 121 in series. Relay 121 thereupon energizes and yloclrs from lground over its right Winding and inner right contact to battery on conductor 133 and at its inner left front contact Vcloses the previously traced circuit through vthe lett Winding ot relay 125 causrelay 125 -to be differentially released. rssoon relay 125 deenergizes the shunt around relay 127 is opened whereupon relay 127 energizes `in the holding circuit ot relay 123. i l

At the termination oit the sixth and last impulse oit the third series, ,relay 113 reH leases and `With relay 121 energi-ied and the remaining counting relays deenergized,v

circuit is closed from ground at the right baclr contact oit relay 1.18, theouter leitt back contact ot relay 114, the inner right contact oit relay 117, the back Contact of relay 143, the lett trent contact of relay 126, the inner lett front contact oit relay 127, the .outer lett back contact ot relay 124, the outer lett trent contact of relay 121, conductor 133, the outer lett -iront `contact ot relay 200, conductor to batteryV through the Windingl Voi? Vertical magnet 201. ,11 second cir.- cuit is also .closed from ground at the baci; contact ot relay 118, over `the circuiL traced to the inner lett `front VContact ot relay 127, outer lett trent contact oft relay 127, conductor 140, magnet 204 to battery. These magnets 201 and 204, upon energizing', operate the Vertical bars associated therewith and at .theirv armature contacts connect ground to the conductor 205 for the purpose ot energizing the `horizontal magnet 210. The circuit ot magnet V210 extends troni conductor 205, through the inner right front contacts ot' relays 207 and 209 and the inner right back Contact ot relay 211 to battery through the` Winding` et magnet 210. Magnet 210, upon operating, rotates the associated .horizontal barand locks itselt through the Winding ot transler relay 211. Magnet 210 also causes the operation et relay 114 as previously described, `which in turn, releases `relays 117 121, 126 and 1.2l7 As soon as .relay 117 releases, fthe operating circuits otmagnets 201 and 204 are opened and these `magnets permit the restoration ot the operf 'ated Vertical bars. 1N ith these magnets deenergized the transi'er relay 211operates in the holding circuit ot magnet 2,10 opening the circuit et' relay 114.. rThrough the conjoint operation et the operated vertical and horizontal. kbars the registering

cards

225 and 225 are operated andare ymaintained operated solely through the operation oi magnet 210 after the release off magnets 201 and' 204. rlhe recording and registering circuits are now in condition to receive and register the fourth or thousands series of impulses.

The subscriber next operates his dial 101 to interrupt the circuit of relay 111 once, the thousands digit being assumed to be 1. At the end of the first circuit interruption, relays 117 118 and 121 arein an energized condition as described in connection with the preceding digit series. Since only a single circuit interruption results from dialing the thousands digit 1, the relay 111 remains energized following this interruption and relay 118 deenergizes, closing a circuit extending from ground at its right back contact, outer left back contact of relay 114, inner right contact of relay 117, back contact of relay 148, left back contact of relay 126, outer left back Contact of relay 124, outer left front contact of relay 121, conductor 188, outer front contact of relay 200, conductor 223 to battery through the winding of vertical magnet 201. Magnet 201 operatesk the vertical bar associated therewith and at its armature contact closes a circuit over conductor 205, the inner right front contacts of relays 207, 209 and 211, the inner right back contact of relay 213 to battery, through the horizont-al magnet 212. Magnet 212 thereupon rotates the horizontal bar associated therewith, locks itself through the winding of relay 213 and closes the circuit of relay 114. Relay 114, upon energizing, opens the circuits of relays 117 and 121, whereupon magnet 201 is released. Through the conjoint operation of the magnets 201 and 212, the registering card 227 is operated, this card being held operated through the continued operation of magnet 212 following the release of magnet 201. As soon as magnet 201 releases, the shunt around transfer relay 213 is opened and this relay energizes in the holding circuit of magnet 212, opening the circuit of relay 114. The recording and registering circuits are now in a condition to receive and register the fifth or hundreds series of impulses.

The subscriber now manipulates his dial 101 to interrupt the circuit or relay 111 ten times to record the hundreds digit 0. At the end of the sixth linterruption yrelays 117 118, 121, 126 and 127 are in an energized condition as described in connection with the third digit series. In a similar manner in response to the seventh, eight, ninth and tenth circuit interruptions, relays 122, 123, 124 and 125 energize -in succession each in turn causing the deenergization of the counting relay preceding it. Thus at the end of the tenth interruption relay 125 remains energized and locks, while the remaining counting relays are all deenergized. As soon as relay 125 energizes it establishes a circuit for relay 148 extending from battery through the winding of relay 148, right tact of relay 125 to ground at the outer right contact of relay 117. When relay 111 remains energized at the end of the digit series and relay 118 deenergizes, no circuits are established for vertical magnets of the registering mechanism, but a circuit is established from ground at the right back contact of relay 118, outer left back contact of relay 114, inner right contact of relay 117, front contact of relay 148, conductor 141, inner right front contact of transfer relays 207--213, inner rightback contact of relay 215 to battery through the winding of magnet 214. Magnet 214 operates locking itself in series with the transfer relay 215 and closing the circuit of rela-y 114. Since no vertical bars have been operated, the operation of the bar associated with magnet 214 is without effect on the register- Iing cards associated therewith. Following the energization of relay 114, relays 117, 126, 127, 148 and 125 deenergize. As soon as relay 148 deenergizes the shunt which has existed around the winding of transfer relay 215 is opened and relay 215 energizes in the holding circuit of magnet 214, in turn, opening the circuit of relay 114. The recording andrregistering circuits are now in a condition to receive and register the sixth or tens series of impulses.

The subscriber now operates his dial 101 to interrupt the circuit of relay 111, three times to record the tens digit 3. At the' end of the third interruption, relays 117, 118 and 123 are in anenergized condition as previously 'described and when relay 111 remains energized at the termination of the digit series and relay 118 deenergizes, circuits are established for

Vertical magnets

201 and 202. The circuit of magnet 201 may be traced from ground at the right back contact of relay 118, thence as previously traced through the outer left back contact of relay 124, the outer left front contact of relay 123, conductor 138, the outer left front contact of relay 200, conductor 223 to battery through the vertical magnet 201. The circuit of magnet 202 may be traced from the outer left back contact of relay 124, the outer left back contact of relay 121, conductor 137', to battery through the vertical magnet 202.

Magnets

201 and 202, upon energizing,=cause the operation of the vertical bars associated therewith and establish a circuit over conductor 205 for the horizont-al magnet 216 in a manner hereinbefore described in connection With the operation of other horizontal magnets.

Magnet 216, upon operating, locks itself l through the winding of transfer relay 217, rotates the horizontal bar associated therewith and establishes a circuit for the relay 114. Relay 114, upon'energizing, releases relays 117 and 123, whereupon the operated

vertical magnets

201 and 202 are released,`

releasing the operated vertical bars and permitting `the energization of transfer relay 217. '.lhrough the conioint operation oi the vertical and `horizontal bars, the cards 228 and 220 are operated, these cards eing maintained operated following the release oli the vertical bars, through the continued operation oit the horizontal `magnet lith relay 219 operated the circuit oi relay 111 is `opened and relay 111 deenergizes. The recording and registering lcircuits are now in vcondition to receive the seventh or units series ot impulses.

The subscriber new operates his dial 101 to interruptthe circuit of relay 111 live times to record the units digit At the end of the iifth interruption, relays 117, 113 and are in an energized condition hereinbetore described. Upon the termination et the ifth and last impulse, with relay 1253 energized, a circuit is vestablished from ground at the outer right contact of relay 117, 4the outer right contact ot relay 125, "the right back Contact or relay 127 to battery through the Winding oi relay 120. lle- `lay 126 energizes, locking itseli through the Windingfoi relay 127 and its own right con- 'tact kto ground at the louter right Contact ot relay 117. Relay 12E/'does not, however, energize in this locking circuit so long as relay 125 remains energized. lllllien .relay 111 remains energized at the termination oi' vthe series of impulses and relay 118 deenergizes, a circuit is established extending from `the right baclr contact of relay 113, thence as previously traced to the leit armature and front contact ot relay 126, the inner left baclr contact ot relay 127, conductor 110 to battery through the Winding ot vertical magnet 201. ltlagnet 201, upon energizing, operates the vertical bar associated therewith and establishes a circuit over conlductor 205 'for the horizontal magnet 213 in #the manner previously described in connection .with circuits of other horizontal magnets. Magnets 213, upon energizing` operates `the associated horizontal bar, which `in conjunction with the operated vertical bar, causes the operation ot the registering card 230. In addition magnet 213 loclrs itself through `the Winding of transier relay 219and closes a circuit for energizingreiay 111. Relay 111, upon energizing, opens the Vholdingcircuits ot relays 1,17, 125 and 120,

-Whereupon `these relays release, relay 117, in turn, openingthe energizing circuit ot ven tical magnet201. hrlagnet 201,1.upon doenergizing, lpermits the restoration oi the operated vertical bar and permits the ener- `gization ot the transfer relay 210, which u pon operating, yopens the circuit ci relay 111. The recordingl and registeringv circuits arenow in condition to receive and register i vthe last .or stations series of impulses.

The subscriber now manipulates his dial 101 to interrupt thecircuit ot relay :111 nine times to record the stations .letter 17V. At the end of the ninth interruption, relays 1117, 118, 121, 1261and 127 are in an energized condition as previously describechand when relay `111 remains energized at the termination ofthe digit series and relay 118 deenergi-zes, circuits are established for the vertical magnets 203 and 201. rllhe circuit tor magnet 203 may be traced from ground at the right armature and baclr contact of relay 113, thence as previously Itraced through the left front contact of relay 126, inner lett front Contact of relay 127, the outer left front contact oi relay 121, conductor 139, thence to battery through the winding of magnet 203. rlhe circuit tor magnet 201 may be traced irom the inner lett armature and 'iront Contact et relay 127, through the outer lett front contact out relay 127, conductor 110, and thence to battery through the winding of magnet 201. Magnets 203 and 201, .upon energizing cause the operation oi" the associated vertical bars and also the operation of horizontal magnet 220 in a manner hereinbetore described .in connection With the operation of other horizontal magnets. hlagnet`220, upon energizing, operates 4the associated horizontal bar, locks Aitf self in series With `transier 'relay 221 and establishes the previously traced circuit `for relay 111. Relay 111, upon energizing, opens the circuits of relays 117, 126, 127 and 121. Relay 117 upon deenero'izing, opens the previously traced circuits ot magnets 203 and 201. As soonas `magnets 203 and 201 deenergize, the operated vertical bars are released and the 4transfer relay 221 energizes opening the circuit of relay 111. The conjoint operation ot the operated vertical and horizontal bars causes the operation ot registering cards 231 and 232, which cards are vmaintained in their `operated condition by the magnet 220, following the deenergization of magnet-s 203 and 201. The entire orlice land numerical designations yo't the Wanted line number have now been registeredupon the registering mechanism.

'In the foregoing description, the regilstra- 1 tion et all digits except digits 7 and 8 have been described. l/Vhen the digit 7 is dialed, upon the termination of the circuit inter- 'uptions, relays 117., 126, 127 and 122 are in an energized `condition and, thereforev conductors 137I and 110 are grounded to

operate'the verticalA magnets

202 and 201, thus operating the second and tour h registering cards ot' the horizontal row oi cards corresponding to the digit series being dialed. lllflhen the digit 8 is dialed upon the ter nination ot the circuit interruptions relays 117, 120, 127 and 123 are in an energized condtion and therefore conductors 137, 138 and 110 are grounded to operate the

vertical magnets

201, 202 and 204, thus operatingthe first second and fourth cards of the horizon tal row corresponding to the digit series loeing dialed.

Upon the completion of the registration ot' the entire o'lice and numerical designa tions ot the wanted line, a district marker is associated with the upper three groups ot registering elements ot' the registering mechanism and a line marlrer with the live lower groups of registering elements over the groups oit conductors extending to the right margin of the ligure, if thecall is of a full mechanical class. It the call is of a class in which connection must be established to the wanted line through a call indicator position of a manual oiiice, all ot the groups of registering elements are connected with the relay call indicator impulser ot the sender over the groups of conductors extending from the lett of the several groups of registering` elements. rlhe district line markers and the call indicator impulser (not disclosed) may he associated with the registering mechanism in the manner set forth in the aforementioned patent to S. B. lVilliams, Jr. i

For example, when the district marker is in condition to be operated in accordance with the otlice code registered upon the registering mechanism, a connection is eX- tended 'to the conductor 233 which extends as stated in parallel to the grid wires 234, 236 and 238. Through the operation of the card 222, the grid wire 234, is connected to the marker wire`235; the grid wire 236 through the operation of card 224 is connected to the marker wire 237; and the grid wire 23S through the operation of cards 225 and 226 is connected to the marker wires 239 and 240. Similarly, when the line marker is in readiness to be operated in accordance with the numerical registrations of the registering mechanism, the wire 241 is connected in parallel to the

grid wires

242, 264, 245, 248 and 250. rlhe grid wire 242 through the operation ot card 22T is then connected to marker wire 243. Grid wire 264, in this instance, is without connection to any marker wire ot the group 244, since the hundreds digit was Zero. `The grid wire 245 is connected through the operation ot cards 228 and 229 to marker wires 246 and grid wire 248, through the operation of card 230 is connected to the marker wire A249 and grid wire 250 through the operation `the sender the second and third grid wires associated with each group of registering cards, which are respectively connected to battery through a high resistance element 255 and a low resistance element 254, are connected selectively with marker wires e);- tending to the call indicator impulser. For example, marker wire 256 of the group 253 is Vconnected through the lower contact of card 222 to grid wire 265; marker wire 258 is connected through the second contact ot .card 224 to grid wire 266; marker wire 260 is connected through the second contact of card 225 to grid wire 261 and marker wire 263 is connected through the lower Contact of card 226 to grid wire 262., and so on for the remaining 'groups oit registering elements.

Att-er the markers have been set circuits may he closed in the manner fully set forth in the aforesaid patent to- S. B. lVilliams, Jr. for determining the selective operation ot the switches such as switch 106. For example, the trunks 142, 148, 144, etc. which may represent different numerical groups may he controlled by magnets or

relays

108, 109, 110, etc. under the control of the markers. 1When the connection has' been completed up to sucha point that the recording and registering mechanism is no longer required, the circuit ot relay 111 is maintained opened permitting the release ot relay 115, which at its left contact removes ground from the conductor 145, releasing all operated horizontal magnets 206 220 and the operated transfer relays 207-# 221. Upon the release ot magnets 20G-220, the horizontal hars et the registering mechanism are released, permitting the operated registering cards to restore to normal condition'and open the circuits which have been established. All apparatus of the recording and registering mechanism is now in normal condition. F rom this point, the connection from the calling line is established and released in the well-known manner.

What is claimed is:

1. ln a. switching system, a plurality of switching devices coordinately arranged in rows, a plurality of selecting bars individual respectively to rows of devices in one coordinate direction, a plurality of operating hars individual respectively to rows of devices in the other coordinate direction, means :tor selectively operating said selecting hars, and means for operating one or more o't the devices in a row associated with an operating bar through the'conjoint operation of one or more orn said selecting hars undone of said operating bars.

2. In a switching system, a plurality of switching devices coordinately arranged in rows, a plurality of selecting bars individual respectively to rows of devices in one coordinate direction, a plurality of operating liars individual respectively to rows of devices in the other coordinate direction, means for selectively operating said selecting bars, and means vfor successively operating' one or more of the devices in each of the rows ot' the last named coordinate direction through the repeated and conjoint operation of one or more of said selecting bars with successive ones of said operating bars.

In a switching system, a plurality of switching devices coordinately arranged in rows, a plurality of selecting bars individual respectively to rows of devices in one co ordinate direction, a plurality of operating bars individual respectively to rows of devices in the other coordinate direction, and means for successively operating varyling combinations of the devices in each of the rows of the last named coordinate direction through the repeated simultaneous operation of varying combinations of said switching bars with successive ones of said operating bars.

a. In a telephone system in which connections are established in accordance with the designations of desired connections under the control of a central oiiice sender, a unitary registering mechanism individual to the sender for registering all digits of complete call designations, comprising a plurality of groups of registering elem-ents for registering respectively the several digits of call designations and means less in number than the numerical value of the largest digit to be registered for selecting elements of any group.

5. In a telephone system in which connections are established in accordance with the designations of desired connections under the control of a central oiice sender, a unitary registering mechanism individual to the sender for registering all digits of complete call designations, comprising a plurality of groups of registering elements for registering respectively the several digits of call designations, means less in number than the numerical value of the largest digit to be registered for selecting elements of any group, and means individual respec tively7 to the several groups of elements and successively operating in conjunction with said first means for operating the selected elements of said groups.

6. In a telephone system in which connections are established in accordance with the designations of desired connections under the control of a central oiiice sender, a unitary registering mechanism individual to the sender for registering alldigits of complete call designations, comprising a plurality of groups of registering elements for registering respectively the several digits of call designations, means repeatedly operated in response to successive digits to be registered for successively selecting elements of said several groups, and means individual respectively to the several groups of elements responsive to successive digit series and operating successively in conjunction with said iirst means for operating selected elements of said groups.

7. In a telephone system in which connections are established in accordance with singly or in combination for selecting one or more elements ot any group.

8. In a telephone system in which connections are established in accordance with the designations of desired connections un* der the control of a central othce sender, a unitary registering mechanism individual to the sender :tor registering all digits of complete call designations, comprising a plurality of groups of registeringv elements tor registering respectively the several digits oi call designations, means less in number than the numerical value of the largest digit to be registered operating singly or in combination for selecting one or more elements of any group, and means individual respectively to the several groups of elements and successively operating in `conjunction with said iirst means for operating the selected elements of said groups. l

9. In a telephone system in which connections are established in accordance with the designations of desired connections under the control of a central oiiice sender, a unitary registering mechanism for the sender for. registering all digits of complete call designations, comprising a plurality of groups of registering elements coordinately arranged in rows, a plurality of selecting bars individual respectively to rows o elements in one coordinate direction, a plurality of operating bars individual respectively to rows of elements in the other coordinate direction, means for operating said selecting bars singly or in combination in re- -sponse to each digital` series of impulses to be registered, means for successively operating said operating bars in response to successive series of impulses, and means jointly controlled by said selecting and operating bars for operating said registering elements.

In witness whereof, I hereunto subscribe my name this 16th day of October A. D.,

`OWEN C. FROM.