US1110669A - Coin-collector for telephones. - Google Patents

Description

A. E. CASE.

COIN GOLLEGTOR FOR TELEPHONES.

APPLICATION FILED was, 1912.

Patented Sept. 15,1914.

3 SHEETS-SHEET 11 A. 13. CASE. com 0011301303 FOB. TELEPHONES.

APPLICATION FILED AUG. 8, 1912.

Patented Sept. 15,1914

3 SBBETS-SHBET 2.

Jill/e1 THE NORRIS PETERS 60.. PHOTD-LITHO.. WSHINGTON. D C.

A. E. CASE.

COIN GOLLEGTOR FOR TELEPHONES.

nrmou'mn FILED AUG. 8, 1912.

1,1 10,669. Patented ept. 15 191 i 3 SEEETSSHEET 8.

THE NORRIS PETERS C0. PHOTO-LITHO-. WASHINGTON D. C.

time srarns PATENT curt-c125.

ARTHUR E. CASE, CHICAGO, ILLINOIS, ASSIGNOR T0 DELTA ELECTRIC COMPANY,

OF MARION, INDIANA, A CORPORATION OF INDIANA..

oom-connncron non TE-LEPHONESF To all whom it may concern:

Be it known that I, ARTHUR E. CASE, a resident of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Coin-Collectors for Telephones, of which the following is a full, clear, and exact description.

The present invention relates to toll-telephone systems and designs to provide an improved system in which no eXtra labor is imposed upon the exchange operator in handling the toll or token deposited in payment for telephone service.

The invention provides'a system in which the coin is automatically disposed of, as a result of the usual manipulation of the sys tem by providing coin-controlling devices which are operated by the act of removing the plug for making the disconnection at the exchange, which is utilized to control the disposition of the coin, so that it will be deposited into the coin boX, if the. desired service is given. In attaining this object, the shift of the switch-hook at the sub-station is utilized to determine the disposition of the coin. By removing the plug or making disconnection at the exchange, while the receiver is 01? the sub-station switch hook, which is connected to the usual supervisory signal at the central exchange, the operator, in making disconnection will automatically cause the coin to be refunded, and by waiting until the receiver at the sub-station has been placed on the switch-hook and then making disconnection, the exchange operator will cause the coin to be deposited into the coin-box. I

' An important characteristic of this system is, that if no service is given, for example, if the calling line-is out of operative condition the coin will be automatically refunded without any act upon the part of the exchangeoperator.

The invention consists in the several novel features hereinafter set forth and more particularly defined by claims at the conclusion hereof.

In the drawings: Figure 1 is a diagrammatic View of a telephone system'embodying the invention. Fig. 2 is a front eleva- Specification of Letters Patent.

Application filed August 8,

Patented Sept. 15, 1914 1912. Serial NO. 714,019.

tion, parts being shown in section or removed of the coin box at the sub-station and the parts therein. Fig. 3 is a section taken on line 3-3 of Fig. 2. Fig. 4c is a detail plan section of some of the parts. Fig. 5 is a side-elevation the cover being shown in section. Fig. 6 shows coin-deflector out ofconductor 17 which is connected to loop-- conductor 14:, and a switch 18 operated by a line-magnet 19which is included in a conductor 20 leading from conductor 17 to a contact 23 normally engaging the tip-contact of the spring-jack 9. Switch 18 is connected to a conductor 21 which is connected to a loop -conductor 15 and to a conductor 22 'which leads to a contact 2-1 normally engaging the sleeve-contact of jack 9. The other side of the cord-loop is similarly connected to spring-jack 10 and a line-signal 16" is included in a conductor 17 which is connected to loop-conductor 14c and terminates at ac'ontact adapted to be engaged bya line-signal switch 18 which is operated by an electro-magnet 19 which is included in a conductor 20which connects conductor 17 to a contact 23, which nor mally engages the tip-contact of jack 10. Switch 18 is connected to a conductor 21 which is connected to a loop-conductor 15 and tea conductor 22 which extends to a contact 2% t which normally engages the sleeve-contact of jack 10. Line-conductors 26 and 27 extend from the spring-contacts of jack 9 to sub station B and conductors 26 and 27 extend from the contacts of jack 10 to the sub-station C.

The equipment at each sub-station comt 5000 ohms.

prises a switch-hook 30, a transmitter'31, a receiver 32 connected to the line in usual manner, and a toll-box90 containing a polarized magnet 36 and a magnet 37. Lineconductors 27 and 26 lead to' terminal posts 38 and 39 respectively. Transmitter 31 is included in a conductor 40 leading from a switch-hook contact 41, to a terminal 42. A terminal-post 43 is connected to another contact 44 at the switch-hook, by a conductor 45. Switch-hook 30 is connected to terminal-post 39, by a conductor 46. e

The helix of an electro-magnet 81 for operating a supervisory signal 82, is included in each side of the loop-conductor 14. Suitable connections, which may be the same as usual are provided for causing the supervisory signal to be actuated to indicate when the receiver at the sub-station is off the hook, or the line is interrupted at the switch-hook contacts, as well understood in the art. A supervisory-signal is provided for each side of the cord-loop, that is, one for the answering, and another for the calling side.

The helices of polarized magnet 36 are included-in a conductor 47 which leads from terminal-post 43 to terminal-post 38. The aggregate resistance of these helices is about A conductor 48 leads from a switch-contact 49 to one helix ofmagnet 36 to provide a path including a portion of the helix; to interpose a low; resistance, say 150 or200 ohms. Contact 49 is adapted to engage a contact 50 which is connected by a conductor 51 to terminal-post 39. This switch comprisingcontacts 49, 50, is adapted to be operated and held in operative po-? sition or closejd'by a coindeposited into a coin-channel 52 (Fig. 2) to cause a circuit to be established for the operation of the line-signal 16 at the exchange.

\{Vhen the subscriber removes the receiver 32 from hook 30, a circuit will be established which will be closed atcontacts 49, 50 when a coin is deposited. Deposit of a coin into channel 52 will cause, itto engage 'aflroller 53 on switch-contact 49to move said contact into engagement with its associated contact 50, and thereupon a circuit will be established which Willcause the operation of the linesignal 16 at the exchange, Said circuit will he as follows: battery 13, conductors 15, 21, 22 contact 24, the sleeve-contact of jack 9,

., line-conductor 26, post 39, conductor 51,

contacts 50, 49, which are held in contact by thesuspended coin, a conductor 48, a portion 01' one of thehelices of'polarizedmagnet 36, (so, the resistance will amount to about 150 ohms) a portion of conductor 47 post 38, line-conductor 27, the tip-spring of jack- 9, contact 23, conductor 20, including the heliar of magnet. 19, conductors 17 and 14 to battery 13. This circuit will causemag net .19 to operate armature-switch. 18 to close a.

be reversed.

which is as followsibattery 13, conductors 15, 21, switch 18, signal 16, conductors 17 and 14 to said battery. Thus, removal of the I switch-hook. at thev calling-station is necessary, and deposit oi a suitable coin into the toll-box must be made to cause the coin to close switch 49,50 before the line-signal will become operative to indicate that service is desired. Since deposit of a coin is required in order to operate'the line-signal at the exchange, the system is of the prepayment type.

The low resistanceof that portion of one helix of magnet 36, which is included in the line-signal circuit, is, insufiicient to prevent the operation of magnet 19. i

:When the operator inserts plug 11 11150.

spring-jack 9 in response to line-signallG, the supply of potential of the line-magnet 19 will be cut off and the polarity of battery 13 with respect to the line-conductors will tween the exchange and sub-station B. The depositedv coin is held in position to close switch 49, 50 by a stop 54 which is operated by magnet 36 and withdrawal of this stop 54 causes the coin to be dropped onto' a second stop 55, where it will remain suspended until the coin is to be refunded or cashed. The-circuit for causing magnet 36 to operate stops 54 and- 55 to cause the coin to fall from stop 54 and be held upon by stop 55, will be as followsi battery 13, con ductor 15, tip of plug 11, the tip-contact of jack 9, conductor'27, post 38, conductor. 47, (including both helices of magnet 36), post 43, conductorL4-5, contact 44, switch-,hook'30, conductorv 46, post 39, line-conductor 26, sleeve-contact of jack 9, sleeve of plug 11, conductor 14 (including the helix of magnet Insertion of the plug establishes a circuit for speech transmission be 81), to battery 13. When the plug is insertedin spring-jack 9, the line-signal circuit is;

interrupted at the jaclocontacts 23 and 24 and current; of reversed, polarity causes magnet 36 to repel its armature 56 so,

that coin-stop" 54 will be moved to vrelease the'deposited coin, andthe second coin-stop will be rendered operative to receive and second stop causes the spring- contacts 49 and 50 to separate.

speech-transmission. between the exchange The circuit for speech-transmlssion will be as follows: hate and the calling-station.

tery 13,1 conductor 14, sleeve of plug 11, sleeve-contact of, jack- 9, line-conductor 26,

post 39, conductor 46 switch-hook 30, con

This energization "of magnet-.36 operates its armature 56 to shift hold the coin. '.The falling of the coin to the ductor 40 (in which transmitter 31' is "in: cluded), post 42, a conductor 60, switch- contacts 61 and 62, a conductor 63, post 38, lineconductor 27, tip-contact of jack 9, tip of plug 11, conductor 15, battery 13.

At the same time that a talking circuit is being established, magnet 37 is short-circuited. until contact 66 is separated from a contact 67. An armature 68 of magnet 37 carries a lever 69 (Fig. 2) for operating the coin-deflector which is adapted, in one of its alternative positions, to deflect a coin falling from stop 55, into a refunding channel 71, (Fig. 3) and in its other position to direct the coin into the cash-box 72. The

purpose of short-circuiting this coin-conpost 43 and switch-contact 66, and contact 67 is connected to a conductor 76 which leads to post 43. A conductor 7 8 connects post 39 to a switch-contact 79 adapted to be engaged by contact 66 when the latter is shifted from its normal position by magnet 36. Switch-contact 62 is connected to post i 38 by a conductor'63.

Switches 61, 66-and circuits are operated by armature 56 of polarized magnet 36 When said armature is shifted into position asso that when the receiver is placed on the hook, while the plug is in. the jack,'the coin will be deposited in the cash-box, and when the receiver at the sub-station is placed on the hook after the plug has been withdrawn from the jack, magnet 37 will cause refund of the. coin. Another purpose of placing the helix of magnet 37 in series withthe helices of magnet 36, which occurs when the plug is in the spring-jack and the receiver is on the hook, is to interpose a suflicient'resistance, say 10,000 ohms in the circuit to cause the armature of magnet 81 for the supervisory-signal, (which is included in loop-conductor 14) to be operated so that said magnet will be deenergized 'when'the receiver is on the hook, the armature of magnet 81 being connected to the supervisory-signal circuit in the usual manner, so that it will fall back to its normal position, (away from the magnet) when the latter is denergized, as occurs by interpositionv of such high resistance in the circuit..

If the desired service or connection is given to the calling subscriber, no special act upon the part of the exchange-operator is necessary in connection with the disposition of the coin, and the line is permitted to remain in condition for speech-transmission, as hereinbefore set forth, at which time the polarized magnet 36 is bridged aroundthe talking set of the sub-station and the coin-controlling magnet 37 is short circuited from the line.

When service is rendered, the exchangeoperator leaves the plug 11 in jack 9 until the supervisory-signal indicates that the receiver at the calling sub-station has been placed on the hook. This replacement of the receiver on the switch-hook is utilized in the present invention, to place the line in such condition that the removal of the plug from the jack at the exchange, will automatically cause the coin-controlling magnet 37 to deposit the suspended coin into the.

cash-box. On the other hand, if the exchange-operator should fail to get the desired connection for the calling-subscriber, it will only be necessary to withdraw the plug from the springack while the receiver at the calling-station is oi the hook,

and thereupon circuit conditions will be established which will cause the coin-controlling magnet 37 to control deflector 70, so that the coin falling from the second coin-stop 55'will be guided into the refunding-channel 71 and'be returned. These circuits and conditions cause the coin to'be deposited in the cash-box when the receiver is placed on the switch-hook at the callingstation before the plug is withdrawn from the jack at the exchange. Assuming that talking conditions have been established as hereinbefore set forth and the receiver is placed on the switch-hook at the substation, a circuit will be established as follows: battery 13, conductor 15, tip of plug 11, tipcontact of jack 9, line conductor 27, post 38, conductor 47 7 (including magnet 36), post 43, conductor75 and magnet 37, switchcontact 66, 79; conductor 78, post 39, line conductor 26, sleeve contact of jack 9, sleevecontact of plug 11, conductor 14, magnet 81, to battery 13. Under these conditions the aggregate resistance of magnets'36and 37 will be included in the line and will be sufficient to prevent passage of sufficient current to cause magnet 81 to become actuated for operating the supervisory-signal, and thus 'this condition will-indicate to' the exchangeoperator that the conversation isj at: an end and that disconnection should beinade.

Suiiicient current passes through this circuit, however, to. energize magnet 37 sufficiently to operate its armature 68 to shift lever 69 to. tilt deflector 70 againstv theforoe of a light spring 7 0, so. that when the armae ture 56 of the polarized magnet 36 is deene r-w gized and passes into its normal position, the coin-stop 55 will release'the coin and the latter will drop down behind deflector 70, and into the cash-box 72.

Polarized magnet36 is deenergizeditoree lease the coin-stop 55 When the exchange,-

operator'withdraws plug 11 from jack 9, at.

which time, current from battery 13 through the plug is interrupted. When the exchange-operator pulls out the plug, current. of opposite polarity passes over the line and through the polarized magnet 36, to shift its armature to restore the switches 66, 6'1

controlled thereby, and in so doing, breaks.

the: circuit at said switches, said circuit of opposite polarity being as follows: battery- 13, loop co'nductor 15., conductor 21, 22 contact 24, sleeve-contact. of jack 9, line-conductor 26,. post 39, conductor 78:, contacts 79, 6,6, conductor 75, and'the helix ofmagnet 3.7, post 43, and the helices ofmagnet 36, post 38, line conductor 27, tip-contact of jack 9, contact 23 conductors 20-, (including magnet- 19) l7 and lite battery 13. Thereupon the armature 56 of magnet 361, will tend to pass to. itsv reversed position and will pass into its. centralized normal position and will separate switch members 66 and 79.

Magnet 37 is: a slow-acting magnet, being formed with a suitable. copper head, so that it'wilzlhold deflector 7 O a sufficient periodto cause the released coin from stop L55Xto pass, into the cash box before deflector 7 0 is restored to its normal position (Fig. 3): as

a result of the deenergizatiion of magnet 37;

If the service desired cannot be given, theoperator will merely withdrawthe plug-11,

from jack '9,-while the receiver at the sub,-.

station is'ofl the switch-hook, which will cause the coin to be refunded, because magnet 37 will not be energized if the receiveris off the hook. The current for the operati-onof polarized magnet 36. to operate the coin-stop 55 and restore armature 56'of said mag-net to cause the separation of switch 66,.-

7 9; will be as follows: battery 13,-loop-con ductor 15, conductors 21, 22, contact 24,

sleeve-spring of jack 9, line-conductor 26,

post 39, conductor 46, hook 30, contact 4A, conductori5, post 43, conductor Hand the helices of magnet 36, post 38, line conductor 27",j tip-spring of, jack 9, contact 23, con-- ductors 20 (including magnet19 17. and 145 to battery 13. In this circuit, the coin-comtrolliing magnet 37 will be short-circuited, 'sothat deflector 7;O willcremain in its-normal? 'cuit will remain broken "position, shown in Fig. to direct the coin" from the stop 55into the refunding channel.

WVhen the receiver is placed onthe hook at.

the calling station, this circuit is interrupted at contact 44 of the switch-hook and thecirv until a coin is again deposited. 3'

When the sub-station is used for an in into "the spring=jac and ringsth'e station comingcall, the o eratorinserts the plug in the usual manner. When the called sub scriber removes the receiver from the switchhoolr, current. from battery13, will flow as follows: battery 13, conductor 15', tip of plug 11', tip, contact oi? jack 9, conductor 27,

post 38', conductor 47 gincluding =magnetl contact (i4, hook 36.). post 43,- conductors 30:, conductor 46, post, 39, line-conductor26, sleeve-contact of plug 9, sleeve of plugll, conductor 14, to battery 13. The potential will be of such polaritythat magnet 36" will operate its armature. 56 to operate iswitch springs. 62, 61 toinclude th talking set in the circuit forspeech-transmission, which will beas follows: from battery 13 to post 38. as; last set forth, conductor 63, contacts 62,61, conductorl60, post 42, conductor 40 in which the talking set'is included, contact i1, switch-hook 30,. conductor 46, to post 39" and thence back over line-conductor 26, as

heretofore .set forth.

- If it should be desired to signal 'to the;

exchange-operator from the sub-station by working the switch-hook 30 up and down done without affecting the coin control-ling to flash the supervisory signal, this may be device, because: the operationfof the coinstop 55 is only effected by withdrawal .of

ofthe hook.

to; be, engaged by lever 69., Coin-stops 54 and 55 are both formed on a lever v95which is. pivoted at .96, and are disposed so that when-said lever is in itsnormal position, the coin runway 52 is clear of said. stops, and. When armature 5,6of polarizedmagnet 36 is shiftedto one of its alternative positions by the circuit established upon deposit of the coin, stop 54: will be moved into-the runway, and when the armature is; shifted to the other of its alternativev positions, as occursv when the circuit is established for speech-- I 54:. outv of the runway and willshift stop 55 transmission, lever 95 will withdraw stop into the runway 52. Lejver 95' is operated by armature 56 by means of arm 95 'formed in such. manner as toengage in a-slot in abutment: 97 for engaging: switch-contacts 66,. 61, to 'cQnjointliy-shitt; spring 66 out of contact with spring 67 and into contact with spring 79, and to shift spring 61 into contact with spring 62. The walls of coinchannel 52 have openings 98 therein for coin-stops 54 and 55.

If theline is inoperative to cause the operation of the line-signal at the exchange by closing the circuit at contact 49, 50,-when a coin is deposited, so that lever 95 will be operated by magnet 36 to shift coin-stop 54 into position to hold the coin, and keep the circuit closed at said contacts, the coin will fall through the coin runway and be deflected into the refunding channel 71, de

fiector 70 being normally in the position shown in Fig. 3. Therefore, if theline is out of operative condition to signal the exchange, the coin will be automatically refunded.

The invention thus. exemplifies, a prepayment toll-telephone system in which disposition of a coin is automatically made, so that no special act upon the part of the exchange operator is necessary to dispose of the coin, because means and connections are provided whereby the disposition of the coin depends. upon the two acts; that is,

withdrawingv the plug and placing the receiver on the hook, and when the plug is withdrawn with the: receiver off the hook, the coin will be automatically refunded and when the subscriber hangs up the receiver before disconnection is made at the exchange, the system will automatically collect the suspended coin. In-fact, the operation required by the exchange operator is the same as in a telephone system in which no provision is made fortoll and the operation upon the part of the subscriber is the same, except that the prepayment of a coin is required to operate the line signal at the exchange. It thus becomes possible for an exchange operator to handle as many calls in this toll-telephone system,ias is possible in a system in which no provision is made for toll.

The invention is not to be understood as restricted to the details set forth since these may be modified by the skilled mechanic within the scope of the appended claims without departing from the spirit and scope of the invention.

Having thus described the invention, what I claim as new and desire to secure by Letters Patent, is:

1 A toll-telephone system comprising an exchange, a sub-station, a connecting line, a coin collecting device, and means and connections for controlling the coin-device to cause it to refund the deposited coin when the calling-line is disconnected at the'-ex,-' change before the subscriber disconnects the sub-station at the sub-station.

- 2. A toll-telephone system comprising an exchange,a sub-station, a connecting line, a

coin collecting device, a coin-controlled switch at the sub-station, and means and connections for controlling the coin-device to cause it to refund the coin when the calling-line is disconnected at the exchcnge before the subscriber disconnects the substation at the substation. a

3. A toll-telephone system comprising an exchange, a substation, a connecting line, a coin collecting device at the sub-station,a coin-controlled line-signal at the exchange, and means and connections for controlling the coin-device to refund the deposited coin, when the line is disconnected at the exchange, before the subscriber disconnects the sub-station at the sub-station.

4. A toll-telephone system comprising an exchange, a sub-station, a connecting line, a coincollecting device at the sub-station, a coin-controlled line-signal at the exchange, and means and connections for operating the coin-device to automatically refund the deposited coin when the line is disconnected at the exchange, before the subscriber disconnects the sub-station at the sub-station.

5. A toll-telephone system comprising an exchange, a sub-station including a telephone-set and a switch-hook, a connecting line, a coin-collecting device at the sub-station, and means and connections for controlling the coin-device to refund a coin when the calling-line is disconnected at the exchange before the subscriber places the receiver of the telephone-set on the switchhook. 6. A toll-telephone system comprising an exchange, a sub-station including a telephone-set and a switch-hook, a connecting line, a coin-collecting device at the sub-station a coin-controlled line signal at the exchange, and means and connections for controlling the coln-device to refund the com deposited to cause the operation of the line- I signal, when the calling line is disconnected at the exchange before the subscriber places the receiver of the telephone-set on the switch-hook.

7. A toll-telephone system comprising an exchange, a sub-station including a telephone-set and a switch-hook, a connecting line, a coin-collecting device at thesub-station, andv means and connections for controlling the coin-device to "refund a deposited coin, when the calling line is disconnected at the exchange, before the subscriber hangs the receiver on the switchhook, said means comprising a polarized magnet con nected to the line.

8.,A toll-telephone system comprising an exchange, a substation including a telephone-set and a switch-hook, a connecting line, a coin-collecting device at'the sub-staltion, a coin-controlled line-signal atthe exchange,and means and connections for controlling the coin-device to refund a coin' deposited in payment of toll, When the calling line is disconnected at the exchange, before the subscriber hangs the receiver on the switch-hook, said means comprising a polarized magnet connected to the line.

9, A toll-telephone system comprising an exchange, including a cord-loop, a sub-station including a telephone-set and a switchhook, a connectingdine, a coin-collecting device at thesub-station, and means and connections for causing the coin-device to refund the coin deposited in payment of toll,

when'the calling line is disconnected from the cord-loop at the exchange, before the subscriber hangs the receiver on the switch hook, said means comprising a polarized magnet'and a slow-acting magnet.

10. A toll-telephone system, comprising an'exchange including a cord-loop,- a substation including a', telephone"=set and a switch-hook, a connecting line, a toll-collecting device at the sub-station, acoin controlled .line-signal at the exchange, and means and connections for causing the coin= device to refund the coin deposited in payment of toll, when the calling line 'is disconnected from the cord-loop at the exchange, before the subscriber hangs the re ceiver on the switch-hook, said means coln prising a polarized magnet and a slow acting. magnet.

11. A toll-telephone system comprising an exchange including a cord-loop, a sub station including a telephone-set and a switch-hook, a connecting line, a coin-col lecting device at the substation, a coin-controlled line signal at thev exchange, and

' line, if the receiver is placed on the switchhook at the substation before the line is disconnected at the exchange.v

13. vA toll-telephone system comprising an exchange, a sub-stationincluding a telephone-set and a sWitch-hook-, aconnecting line, a coin-collecting device, -an'd suitable means and connections whereby the 'coin device .Will be operated to cash the coin, if,

the receiver is on "the svvit ch' hcok amlie sub-station'whenuthe" line is connected at the; exchange, and thereby "the toll' device will be operated to refund the etlawhefi theline is disconnected at the exchange, when the receiver is off the hook at the substation.

14. A toll-telephone system comprising an exchange, a sub-station including a telephone-set-and a switch-hook, a connecting line, a coin-collecting device, a coin-controlledline-signal, and suitable means and connections whereby the coin-device will be operated to cash the coin, if the; receiver is placed on the switch-hook at the sub-station when the line is disconnected at the ex} change, and whereby the coin-device will be operated to refund'the coin when the line is disconnected at the exchange before the receiver is onthe switch-hook at the sub-station. V

15; A toll-telephone system comprising an exchange, a sub-station including telephone-set and a switch-hook, a connecting l1-ne,a' co1n colle'ct1ng' device, suitable means and connections whereby the coln-devlce will be operated to cash'the coin When the receiver is placed on thes'vvitch-hookf at the sub-station before the line is disconnected at the exchange, and whereby" the coin-device Will be operated to refund the coin when the substation is disconnected atthe exchange, before the receiver is placed on the hook at the'subjstation, and means at the exchange for indicating whether the receiver is on or off thesvvitch-hook;

an exchange, a sub-station including a'telephone-setand a sW1tch ho'ok, a connecting means and connections whereby the disposi tionof' a deposited coin by said device'will be dependent upon the time when the re ceiver of the telephone-set at the sub-stat tion-is placed on the switch-hook, relatively to the time When the line is disconnected at the exchange.

17. A toll-telephone system comprising an exchange, a sub-station including a tele= phone-set and a switch-hook, a connecting line, a 1 coin receiving device, a coin-controlled line-signal at the exchange,- and suitable means" and connect-ions whereby a w deposited coin Will be a'ntoniatically dis- 16. A toll-telephone system comprising ice posed of by said device according mi the I time When the receiver of the telephone-set at the'sub-station ispla'ced on the switch-v hook relatively to the time when disconnection of the line is made at the exchange.

18. A toll-telephone systein comprising an exchange, a sub-stationincluding atelephone-set and a svv'itch heck, connecting line, a toll=collecting deviceat the e'xchang'e for indicating when the receiveris on t hook at the substation, and and: connectlcns' for" controlling and tp erati'ngth toll-device to vautor'natic'ally dispose of a coin into either as ave, pat s, includ ing'a polarized ma net, means for c using line, a coin-receiving device, and suitable 1 i controlled by said polarized magnet and the current of one polarity to energize said switch-hook.

ARTHUR E. CASE.

magnet when a coinis deposited, means for causlng current of opposite polarlty to energlze said magnet when connectlon 1s made Wltnessesz 5 with the line, at the exchange, in response to FRANK S. BLANQHARD,

the line-signal, and a magnet in acircuit M. 'GERTRUDE ADY.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0"

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