US2268984A - Busy line recorder - Google Patents

Description

Jan. 6, 1942. R. E. HERSEY BUSY LINE RECORDER Filed oct. 24, 1959 8 Sheets-Sheet l Jan. 6, 1942. R. E. HERSE'Y BUSY LINE RECORDER Filed Oct. 24, 1939 8 Sheets-Sheet 2 NPN NUK

A 7' TOR/VE V `Ian. 6, 1942. l R, E, HERSEY 2,268,984

BUSY LINE RECORDER Fil'ed Oct. 24, 1959 8 ShetS-Sheet 4.

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,Busy LINE RECORDER I Filed oct. 24, 1959 s sheets-sheet e III| HEHE/955V' Jan, s, 1942.

ATTORNEY.

Jan. 6, 1942. yFe. E. HERsEY A2,268,984 l BUSY LINE RECORDER Filed oct. 24, '19:59l s sheets-sheet y'r Y 5vAv ATTORNEYA RE. HERsEY 2,268,984 BUSY LINE RECORDER Filed Oct. 24, 1959 8 @beets-Sheet 8f ATTORNEY E HERSEY By @e M' Jan. 6, 1942.

Patented Jan. 6, 1942 UNITED ,n STATES PATENT Q'IFFICEl 2,268,984 y v BUSY LINE REooitDER- Ralph E. Hersey, Madsongll. Jl, assignor to Bell',-

T'elephone Laboratories;- Ifncorporated, New York, N. Y., a corporation'. of *New York A Application October 24, 1939, Serial No. 300,928' 7 claims. lor 'irs- 5.6)

This invention relates to telephone systems and has for its object to facilitate the recording of certain traino conditions.

It is frequently desirable to determine whether an excessive number of calls fail because of a busy condition on a subscribers line. Arrangements for` this purpose have, in the past, required that one or more conductors, individual to the called linebe opened to permit the insertion of the recording equipment.

lIn accordance with the present invention, al

connected individually to jacks corresponding to the ten digits to 9. When a line is to be observed, plugs are inserted in the jacks corresponding to the line number, thereby preparing circuits for a set of relays, one for each digit register. A set of jacks, a set of relays and a meter are provided for each lineto beV observed. When the marker finds a line busy it connects with the recording mechanism and the registersA are set in accordance with-the Wantedline des'- ignation. If the registered designation corresponds vto one of the designations plugged. up on the sets of jacks, the set of relays is operated and a circuit closed for the corresponding meter.A If the `registered designation does not match any of the designations being observed, a timing. means releases themarker from the recordingL mechanism. When a plurality of oilicesis served by the same markers, means is also. provided for identifying the office. s

The invention will be more clearly understood from a consideration of the following description in connection with the drawings in which:

Fig. 1 discloses the timed release means andone register;

Fig. 2 shows the connecting relays and a setof jacks corresponding to the register of Fig. 1;

Fig. 3 shows two sets of checking relays and their meters as well as a second set of jacks;

Fig. 4 shows the remaining registers;

Figs. 5 and 6 show the sets of jacks corresponding to the registers of Fig. 4 for observing on twolines;

Figs.. '7 and 8 show portions of a decoder marker as wel-lv as the oice relays and jacks of the recorder; and j Fig. 9 shows the manner in which Figs. 1 to 8 should be arranged. l

terminating marker with which the present 'invention would function is disclosed in U. S. Patent-2,089,921,granted AugustlO, 1937, to W. W. Carpenter; y: y A

Asl seti forthA 'in the above-identified patent, whenla wanted line'number has been recorded in aterminating sender, the marker connector associates the sender registers with the registers of an idle marker. The sender transmits the designation to the marker by grounding conductors leading to fthe' marker .register relays. The marker connects with the Wanted line to test Whether it is ybusy or idle and if the line is busy operates .la busy-back relayY which controls the transmission of a busy signal to the calling subscriber.'

Assuming' that the wanted line number 0298 is to` be recorded in the marker, none of the conductors 8M to 804 leading to the thousands register 880 will be grounded, but conductor 8l2 leading to the hundreds register 8H), conductors 823v and 824 leading tothe'tens register 820 and co'nductors 831, 832 and 834 leading to the units register 830 will be grounded.

If this number represents a line on which it is desired to record the number of lost calls, the number will be set up on the' linel overow recorder. To do this, plugs will be inserted in one of the sets of jacks associated with the recorder.

For example, plug 2 I 0 will be inserted in jack' 200,'

plug 530 in jack 502', plug 53| in jack 5|9 and plug 532 in jack-528.

The present disclosure shows the overflow recorder as used in a building which houses'two ofces where the markers are common to both. This arrangement is shown et al. Such markers receive an indication of the o'ice'in which the called line terminates by the relay 104 operated, to denote a vcall for the B oce, relay 103 is operated. .These relays, 'in addition to other functions, prepare circuits :for relays 850 and 'v Since, underjthe above condition, lthe same:vr

number may appearinthe two oices, relays"850" and 8.5i each control a circuit for each meter,l these circuits eac-h extending` through a jack -such in Patent No.'y 2,261,370, granted Nov. 4, 1941, to R. E. Hersey' as jack 845, whereby the meter and its associated equipmentI is individualized to a particular o'ice. Assuming that the line 0298 being observed is in ofhce A, vplug 844 Will be inserted in jack 848. When this line is called relay 104 will be normal and relay 102 operated.

By way of further illustration, assume that plugs 350, 830,'53I and 632 are inserted in jacks 30|, 002, 8|9 and 628, respectively, and that plug 846 is inserted in jack 841 in order to observe on line 1298 of oice B.

Assume now that the marker imds line 0298 of oiiice A busy. This results as detailed in the above-mentioned Carpenter patent in the operation of busy-back relay 853. Relay 853 in turn operates relay 852 which closes a circuit to call in the overflow recorder. This circuit may be traced, if the recorder is idle, from ground on the sleeve of jack 848, plug 844, tip of jack 848, front contact of relay 852, conductor 855, normal contacts of relay 2|4, winding and normal contacts of relay 2|3, upper back contact of relay 2|4 to battery at the lowermost back contact of relay |04. Relay 2|3 operates locking over its lower alternate contacts and the outer lower back contacts` of similar relays corresponding to other markers, outer lower back contact of relay 2|| to battery. Relay 2|3 closes a circuit from ground at its uppermost contact to the winding of relay |04 and that relay operates, removing battery from the windings of relays 2| l, 2|3, etc., to prevent any other marker from seizing the recorder.

Relay |04 also closes a circuit from ground at its uppermost contact, upper normal contacts of relay 2| and the intermediate marker relays, upper front contact of relay 2|3, conductor 2|5 to the windings of relays 10D and 10| in the marker. Relays 180 and 18| connect the marker registers to the recorder registers. In the Ypresent case they extend grounded conductor 8|2 to the winding of relay 402 in the hundreds register 408, conductors 823 and 824 to the windings of relays 4I3 and 4|4 in the tens register 4|0 and conductors 83|, 832 and 834 to the windings of relays 42|, 422 and 424 in the units register 420, causing these relays to operate.

Relay 100 also transfers the oilice identification to the recorder by closing a circuit from ground at the right contact of relay 103, next to lowermost contact of relay 100, winding of relay 850 and battery.

With both relays 180 and 10| operated, a circuit is closed from ground over the uppermost contact of relay 10|, lowermost contact of relay 100, conductor 105, normal contacts of relay |I, winding of relay |03 and battery. Relay |03 connects ground to the winding of relay |04` to hold that relay operated. With relay |83 normal, when relay 2 I 3 operates a circuit is closed from battery, over the lower normal contacts of relay |03, upper winding of relay |02, back contact of relay |03 to ground at the uppermost contact of relay 2|3. Relay |02 which is a polarized relay is energized in this circuit to hold its armature against its right contact. When relay |03 operates, it opens, at its upper back contact, the shunt around condenser ||5 and resistance H6 whereby a charging circuitfor condenser ||5 is effective from battery over the lower alternate contacts of relay |03, through the upper winding of relay |02 through resistance IIB, lower back contact of relay |05, condenser I I5 to ground at the upper front contact of relay |03. At the same time it closes a circuit from batteryy over itslower alternate contacts, resistance |06, lower winding of relay |02 to ground at the inner upper front contact of relay |03. This circuit energizes relay |02 in a direction to close its left contact, but because of the closure of the charging circuit of condenser H5, the charging current for the condenser delays the closure of that Contact for a definite minimum interval. When this contact is closed, ground on conductor 105 is extended over the left contact of relay |02, upper back Vcontact of relay |05 and conductor |01 to the armatures of relays lll, 40|, 4H and 42|, thereby grounding the sleeves of certain jacks as determined by the registration set up.

Since none of the relays of thousands register |00 were operate-d, the circuit may be traced over the back contacts of relays II2, I|3 and H4 to conductor |20 and the sleeves of jacks 208, 380, etc. Since plug 2|0 is in jack 200, the circuit extends over the ring of jack 200 to the Winding of relay 38| and battery. No plug being in jack 300, no circuit is completed for relay 34|.

With relay 402 of` the hundreds register 400 operated ground is extended over the back contact of relay 40|, upper front contact of relay 402, middle upper back contact of relay 404 to conductor 432, through jack 582 and plug 530 to the winding of relay 332 and through jack 602 and plug 630 to relay 342, relays 332 and 342 operating.

Similarly, the tens register 4|0 extends ground to conductor 449 and through jacks 5|9 and 6|9 to rel-' lys 333 and 343, respectively, while the units register 420 extends ground to conductor 458 and through jacks 528 and 628 to relays 334 and 344, respectively.

Since relays 33|, 332, 333 and 334 are all operated, an additional holding circuit is closed for relay |04 over the outer left contacts of relays 33| to 334. In addition, a circuit is closed from ground on the sleeve of jack 848, plug 844, ring of jack 848, inner upper front contact of relay 850, conductor 858, inner left front contacts of relays 33| to 334, winding of relay 335 and battery. Relay 335 locks over its inner right contact to the normal contact of meter 338 and closes an obvious circuit for that meter, thereby insuring the complete operation of the meter. At its left contact, relay 335 closes a circuit from ground over the right contacts of relays 33| to 334, left contact of relay 335, outer lower front contact of relay 2|3 to the winding of relay 2|4 and. battery. Relay 2|4 operates and locks over its lower alternate contact to conductor 855, therefore remaining operated until released by the marker. When operated, relay 2|4 opens the circuit of relay 2|3, which restores the preference circuit permitting other markers to seize the recorder. Relay 2|3 in releasing opens the circuit of relays 100 and 10| which in turn remove ground from conductor 105, thereby restoring the register relays.

Since relay 34| was not operated, the operation of relays 342, 343 and 344 was ineffective and no record was made on meter 346.

If the call had been for line 0298 in oiiice B, relay `would have been operated. Conductor 85B alsoV extends to relay 85|, but the circuit is open at jack 849 and therefore no record would be made.

If the number of the busy line had differed from all of those plugged up, the operationwould have proceeded as above described until relay |02 operated. When relay |02 grounded conductor- |01 this ground extended through the winding ofrelay |01 to` battery and rel`ayf|0| operated.

At its .'inner; upper contact, relay |0`I' closes a supplementary holding `circuit for relay-|04. At

its lower alternate contact, it closes a locking circuit for itselfto Agrounded .conductor` 105 and vopens the circuit of relay |03. Relay |03 ropens ythe circuit through the lower winding of relay '|02 and recloses the circuit through the upper winding, causing relay*` |02 to close its right contact. The closure of this contact completes a circuit from grounded conductor 105, right contact of relay |02, upper front contact of relay 10|, winding of relay |05 and battery..

.f Relay locks to conductor 105 and reoperates relay |03. Relay |03 again closes the circuit toV cause relay |02 to close its left contact, but since relay A||5 has opened the charging cirplace without delay. A circuit is now closed from ground on conductor 105, left contact of relay |02, outer upper front contact of relay |05, outer lower front contact of relay 2I3 to the winding of relay 2|4 and battery. Relay 2I4 functions as previously described to release the recorder from the marker.

Where a record is made, the operation of relay 2M by relay 335 takes place before these operations are completed and, by causing the removal of ground from conductor 105, releases these relays before their operation is completed.

While the present disclosure shows the recorder registers connected to the same conductors as set the marker registers, it is within the contemplation of the invention to supply appropriate registers and connect them with the conductors duplicate registering means to mark said conduc. tors in accordance with said called line designation, a meter, and means effective if saidrduplicate .registering means marks the manually marked conductors to operate said meter.

3. In a telephone system in which connections between subscribers lines ina plurality of ofces Acuit through condenser H4, this closure takes outgoing from the marker registers to other I marker equipment.

If used where only a single oflice is served, relays 850 and 85| and the ofce jacks may be omitted, direct ground being supplied where required.

What is claimed is:

1. In a telephone system in which connections between subscribers lines are made by switching equipment under the control of a control device, said control device having means for registering the designation of a called line and means responsive to said registration for testing said line to determine its busy or idle condition, duplicate designation registering means, a set of conductors, manual means for marking said conductors in accordance with a particular line designation, means controlled by said testing means if said called line is busy to connect said control device to said duplicate registering means and to register the called line designation thereon, means under the control of said duplicate registering means to mark said conductors in accordance with said called line designation, indicating means, and means eiective if said duplicate registering means marks the manually marked conductors to operate said indicating means.

2. In a telephone system in which connections between subscribers lines are made by switching equipment under the control of a control device, said control device having means for registering the designation of a called line and means responsive to said registration for testing said n line designation, means under the control of said are made by switching equipment in each of said oflices under the control cfa control device com.

mon to said oices, said control device having means for registering the designationrof a called line and the oice in `which saidline terminates and means responsive to said registration for testing said line tov determine its busy or idle condition, means for recording the number of times thatsaid control device nds a particular line busy comprising duplicate designation reg-V istering means, a set of conductors, manual means for marking said conductors inaccordance with a particular line designation, means for individualizing said manual means to the office in which said line terminates, means underv the control 'of said duplicate registering means to mark said conductors in accordance with said called line designation, a meter, means effective if said registering means marks the manually marked conductors vand the proper oflice to operate said meter, and means independent of said meter operating means to release said recording means.

4. In a telephone system, means for recording the number of times a line is called while busy, comprising a set of jacks for each digit of a line designation, means `for individually grounding the sleeves of said jacks in accordance with the designation of a called busy line, relays connected in parallel to the ring contacts of each set of jacks, plugs fory connecting the lsleeve and ring contacts of a jack in each set corresponding with the designation of a particular line, and indicating means controlled by said relays when the designation of the called busy line coincides with that of said particular line.

5. In a telephone system in which connections between subscribers lines are made-by switching equipment under the control of a control device, said control device having means for registering the designation of a called line and means responsive to said registration for testing said line to determine its busy or idle condition, means for recording the number of times that said control device nds a particular line busy comprising duplicate designation registering means, a set of conductors, manual means for marking said conductors in accordance with a particular line designation, means controlled by said testing means if said called line is busy to connect said control device to said duplicate registering means and to register the called line designation thereon, means under the control of saidl duplicate registering means to mark said conductors in accordance with said called line designation, a meter, means effective if said duplicate registering means marks the manually marked conductors to operate said meter, and means under the control of said meter operating means to release said recording means.

6. In a telephone system in which connections` between subscribers lines are made by switching equipment under the control of a control device, said control device having means for registering the designation of a called line and means responsive to said registration for testing said line to determine its busy or idle condition, means for recording the number of times that said control device iinds a particular line busy comprising duplicate designation registering means, a set of conductors, manual means for marking said conductors in accordance with a particular line designation, means controlled by said testing means if said called line is busy to connect said control device to'said duplicate registering means and to register the called line designation thereon, means under the control of said duplicate registering means to mark said conductors in accordance with said called line designation, a meter, means elective if said duplicate registering means marks the manually marked conductors to operate said meter, means under the control of said meter operating means to release said recording means, and means independent of said meter operating means to release said recording means.

'7. In a telephone system, means for recording the number of times any one of a plurality of lines is called while busy, comprising a plurality of sets of jacks, each set including a roW of jacks for each digit of a telephone designation, each roW including a jack for each possible value of that digit, an indicating device and a set of relays `for each of said sets of jacks, one of said relays connected in multiple to the ring contacts of each jack in a row, plugs for connecting the ring and sleeverof one jack in each row of each set in accordance with the designations of said plurality of lines, means for grounding the sleeves of one jack in each row of each set in accordance With the designation of a called busy line to operate the relays connected thereto and means under the control of said sets of relays to operate the corresponding indicating device when the designation of the called busy line coincides with the designation of any one of said plurality of lines.

RALPH E. HERSEY.

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