US1680692A

US1680692A - Train-dispatching apparatus

Info

Publication number: US1680692A
Application number: US55099A
Authority: US
Inventors: Robert L Page
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-09-08
Filing date: 1925-09-08
Publication date: 1928-08-14
Anticipated expiration: 1945-08-14

Description

Aug. 14, 192s.

R. L. PAGE TRAIN DISPATCHING APPARATUS Jwovnlfoc:

W www,

R. L. PAGE TRAIN DISPATCHING APPARATUS Aug. 14, 192s. y A 1,680,692

Patented Aug. 14, 1928.

PATENT OFFICE..

nonnar I.. rasa, or GREENVILLE, MISSISSIPPI.

TRAIN-DISPATCHING APPARATUS.

Application med September 8, 1925. Serial No. 55,099.

The present inventionrelates to train dispatching and wayside signallin systems and apparatus, and aims to provide a novel and approved apparatus of that kind where- I by the train dispatcher may keep. fully informed as to the movements of trains in or otherwise, orally by tele hone or by telegraphic printed matter, suc as between em- 15 ployees and otlicials, or between ocials; and the apparatus may also be used for the conveyance of commercial telegraphic and telephonie communications such asA are transmitted b the public telephone, telegraph and ra io companies.

The present apparatus provides for the followin functions: First, the dispatcher is informe when a train approaches a signal location. Second, the dispatcher is also in- 5 formed as to the particular train that 4is aproaching the si al location. Third, the ispatcher may t en set the signal or sig nals at such signal location according to tratlc conditions or other circumstances. l0 Fourth, the trainmen may communicate by telephone with the dispatcher to receive instructions. Fifth, the dispatchermay operate a printing telegraph tickr. or other instrument for producing a written order or wn instructions for the train crew. 1 Sixth, the dispatcher has similar information about, control of and communication with all conv trol station vsets-*of the division or sect-ion within his jurisdiction. f l0 A more specific' object is the provision of an apparatus whereby the dispatcher' may conveniently control and set. one or more signals at-a control. location or station, for vestablishing or changing signals according to traic` conditionslfrom infomation obtained as to the movements of trains, so as to expedite traffic. l 0

VWith the foregoing and other objects 1n view, which will beapparent as the description proceeds, the invention resides in the construction and arrangement of parts, as hereinafter described and claimed, it being understood that changes can be made within the scope of what 1s claimed, without departing from the spirit of theinven- 55 tion.

The invention is illustrated in the accompanying drawings, wherein-1 Figure 1 is a diagrammatical view of the apparatus showing only one control llocation set,

Fig. 2 is a plan view of one of the switch actuators showing the switch open,

Fig. 3 is a plan View of saidl actuator showing the swltch closed, and

Fig. 4 is a fragmentary view of said p switch.

The line wires 7 and 8 are extended alon the right of way throughout the length o the division or section of road under the n supervision of the dispatcher, ,and constitute thetelephone circuit such as is used in the well-known train dispatching a paratus. Said wires lead from- .a selector ey 9 in the dispatchers oiice byA means of which the dispatcher has control of any number of" selectors (of well known Iconstruction and operation) connected in multiple' with the wires 7 and 8, the receiver 10 and transmitter 11 in the dispatchers'oice being conso nected in the. telephone circuit.

At the approach to each control station or" location there is a transmitter 12 connected in series with a pairof contacts 13 of a switch vdevice 14 and with the wires v7 and. a5 8, whereby when the contacts 13 are bridged the transmitter 12 is'connected in the telephoneV circuit in order Athat the dispatcher l may receive (bythe receiver 10) sounds impressed on the transmitter 12. The trans- 00' mitter 12 isused for impressing'in'the telephone `circuit characteristic .o'r identifying sounds or audible signals to convey informa-y tion to the dispatcher.. i

The switch-device 14; the details of which 05 'will be described more .ullyhereinaten is controlled by an electromagnet 15 which is connected by thewires or conductors 17 with a selector 16, a battery 18 being disposed in one of the conductors 17 to furnish current for the magnet l5. The selector 16 is connected by the conductors 19 with the wires 7 and 8.

.The dispatcher is informed of the approach of a train toward a control location. Thus, an electric repeating phonograph 20 or other suitable signal transmitting device is disposed adjacent to the transmitter 12 and the record, sound producing means or indication of the phonograph or device is such as to produce a characteristic sound, audible signal or indication, which may be heard or received in the receiver 10 when the sounds or indications given out by the phonograph 2() are transmitted by the transmitter 12 to the telephone circuit. The sound, audible signal or indication produced by the phonograph 20 is an identification of the particular control station or location, in order to inform the dispatcher that a train is approaching the particular control loca' tion. The phonographs 20 at different approaches to control locations have records, sound producing means or indications for producing different sounds, audible signals or indications, in order that `they may be differentiated by the dispatcher, even though several signals or indications may be received simultaneously due to several trains approaching different control locations simultaneously.

The phonograph 20 is disposed in a circuit 21 including the battery 22 and a pair of contacts 23 of a switch device 24 (similar to the switch device 14), and said switch device 24 is controlled by an electro-magnet 25 connected by the conductors 27 with a selector 26 which, like the selector 16, is connected by the wires or conductors 19 with the telephone wires 7 and 8. A battery 28 is disposed in one of the conductors 27 to furnish current for the magnet 25.

At the approach to the control location, at a suitable distance from the wayside signals, a third rail or ramp 29 is disposed on the track, between the rails as shown, and the train or vehicle carries a wheel 31 or other contact to roll or move over the ramp 29, said contact wheel 31 being connected electrically with car wheels 5 of the train, so as to be connected electrically with the rails 6. The ramp 29 is connected by the conductor 30 with one of the conductors 17 and one of the conductors 27, and a conductor 30 connects one of the rails 6 with the other conductors 17 and 27. Consequently, when the contact wheel 31 moves over the ramp, the

magnets

15 and 25 are energized so that the switch devices 14 and 24, which are normally open, are operated to bridge the

contacts

13 and 23. The circuit includes ramp 29, conductor 30, corresponding conductors 27 and 17,

magnets

25 and 15 and batteries 28 and 18 (the magnet 15 and battery 18 being in parallel relation with the magnet 25 and battery 28), the conductor 30', corresponding rail 6, wheels 5 and contact wheel 31.

Themagnets

15 and 25 are thus energized whenever a train, carrying a contact wheel or member 31, approaches the corresponding control location or wayside signals. The switch 14 bridging the contacts 13 will connect the transmitter 12 in the telephone circuit, and the contacts 23 being bridged will close the circuit of the electric phonograph or indicator 20, which will continue to operate as long as.its circuit remains closed, so that the distinctive sounds, signals or indications are received by the transmitter 12 and impressed in the telephone circuit so as to be heard in the receiver 10 by the dispatcher. This will indicate to the dispatcher that a train is approaching the articular control location.

The switch dldvices 14 and 24 are of similar construction as illustrated in detail in Figs. 2, 3 and 4. Each of said'devices includes a switch 32, pivoted, as at 33, on a base 34, and having an angularly extending arm 35. The switch is of the knife-blade type as shown to wedge between the pair of

contacts

13 or 23 for closing the corresponding circuit, although any suitable switch may be used. A catch 37 is pivoted, as at 38, on the base 34 to engage the switch 32 and hold it in open position, and a retractile coiled spring 39 is connected to the catch 37 and arm 35, and has a tendency to swing the switch 32 to closed position and to move the catch 37 into enga ement with the switch. Said catch has a look or lug 40 to engage the switch 32 and hold the switch in open position, as seen in Fig. 2, and when the catch is disengaged from the switch, the spring 39 swings the switch to closed position, as seen in Fig. 3, with the hook 40 bearing against the end of the switch.

Electromagnet

15 or 25 is mounted on the base 34 and controls an armature lever 42 fulcrumed on the base, as at 42', a spring 43 moving the levex` 42 away from the arm 35 of the switch. A spring leaf 44 is secured to the catch 37 and has a hook 45 and cam 46 at the free end thereof, with the leaf 44 projecting toward the lever 42 and arm 35. The lever 42 carries a finger 47 to engage the hook 45 when the lever 42 is swung by its attraction to. the electromagnct i The switch 32 is alternately closed and opened by the successive intermittent energizations of the magnet. Thus, with the parts arranged as shownin Fig. 2, with the catch 37 holding the switch 32 in open position, the attraction of the lever 42 to the magnet will result in the finger 47 catching in the hook 45 and pulling the leaf 44 so as to .swing the catch 37 to releasing position,

' catch 37 to releasing position, the lever contacting with the arm 35 will hold the switch disposed adjacent to the transmitter 121 53 is located in the conductor 51 to su 32 in open position until the magnet is deenergized and the lever 42 returned to normal position, as seen in Fig. 2, the switch 32 moving to closed position as the lever 42 returns to normal position. The next time the magnet is energized to swing the lever against the pressure of the spring 43, the finger 47 moves past the hook 45, and the lever contacts with the arm 35 and swings the switch 32 to open position. The catch 37 will immediately snap into engagement with the switch, to hold the switch in open position. The leaf 44 being moved to the position shown in Fig. 2 will bring the cam 46 in front of the finger 47 so tliatwhen the magnet is deenergized and the lever 42 returned, the'finger 47 moving under the cam 46 will spring the leaf 44 so that the hook 45 will. snap in rear of the linger 47, to the position shown in Fig. 2. Thus, with the successive intermittent energizations of the magnet the switch 32 is` alternately closed and opened, and will remain in either position until themagnet is again energized.

The dispatcher is also informed as to the identilication of the particular train which is approaching the control location announced by the phonograph 20. Any suitable device may be used for this purpose. As shown, a pair of

ramps

48 and 49 is mounted on the track at the approach to the control location, being disposed beyond the ramp 29. Said ramps 48 and 49 are connected by the

respective conductors

50 and 51 with a telegraph ticker l52v which is Thus, when said transmitter 12 is connected in the telephone circuit bythe switch device 14, the/telegraphic code of the ticker 52 may be transmitted to the telephone circuit so as.

to be heard by the dispatcher. A batterly PP Y current for energizing the ticker 52, and the train or vehicle carries the control shoes or members 54 and 55 to slide over the

respective ramps

49 and 48. The vehicle or train equipment includes .a conductor 56 connecting the shoe 54 with a contact or brush l57, which co-operates with the contact wheel or drum 58 that is connected by a conductor 59 with the shoe 55.' The wheel 58 has 'contact portions or segments thereon to engage the contact 57 in succession when the wheel is rotated, for producing dots and dashes in telegraphic code, in order to identify the particularl train, each train having a contact wheel or drum 58 for producing a specific identilicationvsignal, so that' thedispatcher may identify the train. The wheel 58 is connected to an electric motor 60 to be operated by the motor, and said motor is connected by the conductors 61 and `62 with the slice 55, which has the in sulation 63 between the conductors 6l and 62 so as to normally open the motor circuit. The battery 64v is located in the conductor 62 to furnish the current for operating the motor when the insulation 63 is bridged. Thus, when the shoe 55 moves over the ramp 48, the insulation 63 is bridged, thereby connesting the conductors (S1-and 62, so that the motor 60 is operated to rotate the contact wheel 58. The shoes 54 and 55 moving over the

ramps

49 and 48, respectively, will also complete the telegraphic signalling circuit ofthe train and track, part of the circuit being on the train and Apart on the track. Thus, the tick-er is on the track while the telegraphic transmitter, comprising 'the contact wheel '58, contact 57 and-motor 6() is located on the train. The circuit includes the battery 53, ramp 49, shoe 54,'conductor 56, contact 57, contact wheel 58, conductor 59, shoe 55,-ramp 48 conductor 50, ticker 52, and conductor 51. Thus, as the telegraphic transmitter on the train is 4operated by the motor 60, While the shoes 54 and 55 move over the ramps, the ticker 52 is operated to give a telegraphic signal, which may be repeated inasmuch as the ramps48 and 49 may be of any suitable length. The wheel 31 passes onto theramp 29 before the shoes 54 and 55 pass onto the

ramps

49 and 48, respectively, so that soon-after hearing the sound or signal given by the phonograph 20, indicating the particular station or location, the ticker 52 will be heard to identify the particular train. The dispatcher will therefore have information both as to the particularstation or signal location which' the train is approaching and the particular train that is approaching such location, in order that the dispatcher will be,informed as to the movement of trains, and so `that the Wayside signals may be set and controlled accordingly.

The wayside signals may be of any approved kind. As shown, ,at each control location there are 'electric signal lamps 65, 66 and others according to the character of signals desired and the number ofvtracks. Said lamps are disposed in signal circuits. Thus, the circuit of the lamp 65 includes a conductor 67, a pair of contacts 71 of a switch device 72, conductor 70, battery 69 or. other sourcev of electrical energy, and conductor 68. The circuit ofthe lamps 66 includes a conductor 67', a pair of contacts 71 of a switch device 72', and the conductor 70, battery 69 and conductor 68 which may be common to all of the signal circuits. The

switch devices

72 and 72 are of the same type as the switch devices 14 and 24 and are controlled by the

respective electromagnets

73 and 73.

There may be any number of signal lamp circuits. Thus, there may be one or more lamps or signals for each track of a number of tracks. Lamps of different colors may be used for giving clear, caution, danger' and similar signals, or different numbers of lamps or combinations of colors may be used in the different circuits according to prevailing wayside signal practice. As shown, there is a single lamp in the first circuit and two lamps 66 in the second circuit for purpose of illustration. One switch device is used for each signal circuit and there may be any number of such devices and signals controlled thereby according to the requirements or circumstances.

The signal devices of the control station sets are controlled by a single electrical cir-l cuit in addition to the telephone circuit, said single circuit including the wire 8 of the telephone circuit and a third line wire 74. At cach control station a conductor or wire 75 is connected to the wire 8 and to one terminal of each of the

magnets

73, 73 of the signal control devices, and a conductor or lead wire 76 is connected to the line wire 74 and to a commutator'78. A telegraph key 77 is connected in the telegraph or make and break circuit including the line wires 8 and 74, and means are provided whereby the key 77 may be connected in succession with the several magnets `73, 73 of any control stat-ion, said means of the control location set shown including the commutator 78 forr connecting the

magnets

73, 73 of the control station in succession in the telegraph or signal control circuit. The commutator 78 includes a disk or wheel 79 operated through any suitable gearing by an electric motor 80, said disk 79 having a contact lug or brush 81 to engage in'succession a series of contact segments 82 which are connected by the conductors 83 with the

magnets

73, 73. Thus, the first contact segment 82 is connected tothe rst magnet 73, the second segment 82 is connected to the second magnet 73 vand so on. The battery 84 is connected between the key 77 and the wire 8. When the contact brush 81 engages the rst segment 82, the telegraph key 77 may be connected in circuit with the first magnet 73, such circuit including the line wire 74, telegraph key 77, battery 84, line wire 8, conductor 75, magnet 73, first conductor 83, first segment 82, contact brush 81, disk y79 and vconductor 76. By operating the telegraph key 77 the magnet 73 in such circuit may be energized to either open or close the switch device 72.

The motor 80 is started under the control of the dispatcher. Thus, a selector 85 is connected to the telephone wires 7 and 8, and when properly controlled by the selector key 9 will connect

wires

86 and 88. The wire 88 and a wire 87 are connected to the line wires 8 and 74, respectively, of the telegraph circuit, and an electromagnet 89 is connected to the conductor 87 and to the wire 74. The

conductors

86 and 87 have contacts 91 normally bridged by a switch 92. Therefore, when the selector 85 is controlled to connect the conductors 86 and' 88 for several seconds, this connects the magnet 89 between the wires 8 and 74 of the telegraph circuit in order to give the dispatcher an opportunity to start the motor 80. This is done by closing the telegraph key 77, which completes an electric circuit including the battery 84, key 77, line wire 74, magnet 89, conductor 87, contacts 91 and switch 92, conductor 86, conductor 88 and line wire 8. The magnet 89 being energized will reverse the switch 92, moving said switch away from the contacts 91 so as to immediately deenergize the magnet 89, and the switch is brought against the contacts 93 in the circuit 94 of the motor 80 including the battery or source of electrical energy 95. yThe motor 8O therefore operates to rotate the disk 79, and when the disk has made one complete revolution, the contact brush 81 engages the switch-92 and swings said switch back to normal position away from the contacts 93 and against the contacts 91. The motor is therefore stopped when the disk 79 has completed its revolution.

It is apparent that the electromagnet 89 may be controlled directly from the selector 85 the same as magnets l5, 25, lll and 121 are controlled from the

respective selectors

16, 26, 112 and 122.

In order that the dispatcher may be informed when the

successive magnets

73, 73 of a control station are connected in the telegraph circuit, an electric bell 96 or other audible signal device is provided, being disposed adjacent to a transmitter 101 located at the control or signal location so that the bell or signal may be heard over the tele phone circuit. One terminal of the bell 96 is connected by a conductor 97 with the bat tery 98 and conductor 76, and thc other terminal of the bell is connected by a conductor 99 with contacts 100 disposed in advance of the contact segments 82. Just 'before the contact brush 81 engages a contact segment 82 the brush 81 will engage the corresponding contact 100. This completes thc circuit of the bell 96, including the battery 98, conductor 76, disk 79, brush 81, correspending contact 100, conductor 99, bell 96 and conductor- 97. The bell or signal being heard over the telephone circuit for the first time will inform the dispatcher that the telegraph key' 77 vis being connected in circuit. with the magnet 73. The bell 96 rings )ust priorA to the connection of each

magnet

73, 7 3 of a control station set in the telephone circuit.

against the contacts 103 to connect the transmitter 101 in the telephone circuit (by way of the conductor 102, contacts 103, switch 104 and conductor 75) whenevervthe motor 80 and the commutator are in operation.

A printing telegraph ticker 106 maybe provided at each controlstation for printf' ing on a tape or sheet a written message or order. The ticker 106 is adapted ,to be connected in the telegraph circuit. Thus, one terminal of the ticker 106 is connected by the conductor 106 with the wire 8, and a conductor 107 isconnected to the wire 74, with a pair of contacts 109 between the conductor 107 and the ticker 106. Battery 108 is disposed in the conductor 106. A switch device 110, similar to' the switch devices 14 and 24, is used to bridge the contacts 109 and connect the ticker in the circuit of the wires 8 and 74. The device 110 is controlled by.

an electromagnet 111 connected to a selector 112 which is connected to the wires 7 and 8.

The dispatcher may therefore connect the ticker 106 in the telegraph circuit for trans-v `mitting a message or order, by controlling the selector 112 by the key 9, to close the switch device 11'0 and bridge the contacts 109. Then, when the message has /been transmitted the selector 112 may be controlled to o en the switch device 110 and disconnect t e ticke'r 106 from 'the telegraph circuit. Should the conductor, engineer or any other person desire to communicatewith the dispatcher, a telephone transmitter 115 and receiver 114 are provided at the control station, and the connection thereof in the telephonecircuit is controlled bya 'switch device 120, similar to the devices 14 and'24, the device 120 being controlled by an electromagnet 121 connected to a selector 122 which is connected to the wires 7 and 8. The receiver 114 and the transmitter 115 are connected by a suitable telephone set 116 with the wire 8 and a conductor 117 having the battery 119 therein. The device 120 when in closed position connects the cony nected to the wires 8 and `1,26 so as to signal to the dispatcher the particular control station which is calling (similar to an ordinary call system).

If so desired, automatic train control means maybe used to prevent the train from passing signals set against it. Any suitable devices may be usedv for this purpose. As shown,

electromagnets

127 and 128 are disposed in the signal circuits in series with the respective lamps 65 and 66, and are mounted on the track, for 'operating armatures or switches 129 and 130 carried by the train.

The

switches

129 and 130 are disposed in stick .

circuits

131 and 132,y respectively, including the

electromagnets

133 and 134 and

switchesV

135 and 136, respectively.A The

electromagnets

127 and 128 have permanent magnet cores, the flux of-which is neutralized when the coils are energized by the closing 'of the signal circuits so that the armatures or switches will not be affected in passing the signal location. However, when either or both of the

electromagnets

127 and 128 are deenergized, the attempt ofthe train to pass will result in the corresponding switch or both

switches

129 and 130 being opened-by the permanent magnet flux of the cores, to open one or both of the circuits 131-132. When either of said circuits is openedto drop the

switch

135 or 136 the circuit will remain open, and the

switches

135 and 136 may control 4the air brakes, power or other means for retarding or stopping the train according to the signals set against it. The switches 135 and 136'may be under lock and key so that they cannot be restored except by an authorized person. However, various well known or suitable train control devices may be used in connection with the signal devices to obtain automatic retarding or stopping of the train if the engineer does not obey the signals set against him.

The operation is as follows: When a train approaches a signal location, the contact wheel 31 moving over the ramp.29 will `result in the

magnets

15 and 25 being energized so that the switch devices 14 and 24 are 0p-` erated to bridge the'contacts 13 and 23. Thephonograph 2O is therefore operated, and the transmitter is connected in thetelephone circuit, and the dispatcher hearing the distinctive sounds or audible signals in the telephone circuit will be informed that a train is a preaching the particular control station. 'Fhem the shoes 54 and 55 passing over the

ramps

49 and 48 will signal from the train to the train dispatcher, by. telegraphic code, the particular train that is approaching the signal location. The circuit of the ticker 52 is opened and closed by the wheel or device 58 on the train so that the ticker transmits the identification code of the train. The motor 60 and wheel 58 are only operated while the shoe 55 is moving over the ramp 48 so that the insulation 63 1s bridged. Being informed that a train is approaching a s ecified signal location, and being also in ormed as to the partlcular train; the dispatcher may then set the signals accordingly, depending on traffic conditions. When desired, the phonograph 20 may be stopped by energizing the magnet 25 agam through control of the selector 26 b y the selector key 9, to open the switch devlce 24. It is thus possible to cut out the phonograph when the dispatcher has heard same, in order to avoid confusing sounds or signals. The

transmitter 12 is likewise readily cut out of the telephone circuit by controlling the selector 16 from the key 9 to open the switch device 14. The switch ,devices 14 and 24 must be o ened by energizing the

magnets

15 and 25 by way of the selector key 9 after the train has passed, and, before the next train approaches, in order that control of the

magnets

15 and 25 from the ramp 29 will close said switch devices.

To set the signal of the control station which the train is approaching, the selector key 9 is operated b the dispatcher to control the selector 85 of the particular station, so as to connect the magnet 89, in the telegraph circuit including the battery 84, telegraph key 77, wire 74,\`magnet 89, conductor 87, contacts 91 and switch 92, conductor 86, conductor 88 and wire 8. By closing the key 77 the magnet 89 is energized to move the switch 92 against the contacts 93. kAt the same time, the switch 92 is moved away from the contacts 91 to open thevcircuit of the magnet 89. The switch 92 remains in either of its reversed positions until moved, either by a positive impulse due to the energization of the magnet 89 or to the engagement of the brush or lug 81 with the switch 92, and when the switch 92 bridges the contacts 93 it closes the -circuit 94 of the motor 80, so that the motor is started and will rotate the disk 79 of the commutator 78. The brush 81 engaging the first contact 100 will ring the bell 96 and the transmitter 101 being connected to the telephone circuit by the closing of the switch 104 by the energized magnet 105 will enable the dispatcher to hear the bell, thus giving him a signal that the commutator 78 is in operation. The brush 81` engages the first contact segment 82 and connects the first magnet 73 of the signal control lmagnet 73, conductor 85 and wire`8. If

after the first ringing of the bell 96 is heard, the dispatcher desires to "bange the first signal, he closes the key 77 as to energlze the magnet 73 of the first signal control device, to open or close the circuit of the lamp 65 and electromagnet 127 as the case may be. The lamp 65 may therefore be lighted or extinguished. Then, as the brush 81 leaves the first segment 82 it engages the second contact 100, again ringing the bell 96 and 1nforming the dspatcher that tlu.l next signal control connection is being made. When the brush 81 engages the second segment 82 the magnet 73 of the second signal control device is connected in the telegraph circuit, and the dispatcher may then set the second signal if he wishes. In this manner, as the disk 79 makes a complete revolution the

magnets

73, 73 of the several signal relays are connected in succession in the circuit of the telegraph key 77 so that the dispatcher may set the several signals according to traffic conditions and other circumstances. The signal lamps or other signal devices may be used for signals of all different sorts for train movements, not only to indicate clear, caution and danger conditions, but also the tracks or sidfngs which the train should take.

4The signals may also be used to notify the engineer or conductor to get into communication with the dispatcher, and a single control station may also 'control the signals of any number of tracks.

Should the dispatcher desire, as hereinbefore described, the ticker 106 may be used for producing a printed message or order, and 1f the engineer, conductor or other person desires to communicate with the dispatcher, the call key 124 is o erated whereby the annunciator 123 in the dlispatchers ofiice Will lnform the dispatcher of the particular control station which is calling. The dispatcher may then, b. the control of the selector 122,connect the transmitter 115 and the receiver 114 of the control station lset 1 in the telephone. circuit so that conversation may be had between the dis atcher and the person calling. The transmltter 115 and receiver l114 are cut out of the telephone circuit byopening the switch device 120 when l the magnet 121 is again energized by the operation of the selector 122.

In order that the dispatcher may know the position of the

switches

14, 24, 72, 72', et al. he may have a chart before him indicating the positions of the various switches. It is also possible to use suitable indicators in the dispatchers office, one for each switch, to indicate Whether the switch is on or off. It is also possible to have miniature sets in the dispatchers oflice corresponding to the various control location sets, with suitable indicators, so that the dispatcher may note at a glance the conditionof the various devices of the different control locations. It will therefore be apparent that provision may be made in order that the dispatcher will have .l intelligent control of the various devices. In

' and identifications of the trains and control locations, and the other devicesof the ap aratus may also be of any suitable kind.

or protection at isolated places against malicious persons or trespassers, casings may be used to house the devices and may also protect the devices from the elements during adverse weather conditions.

Having thus described the invention, what is claimed as new is a 1. A train dispatching system comprising a telephone circuit including a dispatchers receiver, and train-controlled means at the approach to each of a plurality of control i y va telephone c1rcu1t including a dispatchers locations of the track operable when a train passes to transmit distinctive telephonie sound waves tosaid circuit.

2. A train dispatching system comprising a telephone circuit including a dispatchers receiver, train-controlled meansat .the approach to each oiga plurality of control locations of the track operable when a train l passes to repeatedly transmit distinctive telephonic sound waves to said circuit, and means controlled by said circuit and selectively controlling the rstnamed means to stop such transmission of sound waves to the circuit.

3. A train dispatching system comprising a telephone circuit including a dispatchers receiver, distinctive' telephonie soundwave v producing means at the approach to each of a plurality of control locations of the track, and train-controlled means for each of said means operable when a train passes to bring the corresponding irstnamed means into operation and to connect it with said circuit for transmission of the sound Waves to said circuit.

operablewhen a train passes and controlling the 1 corresponding sound wave producer to bring said sound wave producer into operation, and also operable to connect said sound wave producer with said` circuit vfor the transmlssion of the sound waves-to said cir cuit, and means selectively controlled by said circuit for stopping said sound wave producers. t

5. A train dispatching system comprising a telephone circuit including a dispatchers receiver, a transmitter for each of a pluralityof control locations of the track, a

phonograph cooperable with each transmitter, and train controlledmeans for connectlng the corresponding transmitterto said c1rcu1t -and bringing the companion phonograph into operation when a train approaches a control location.

6. A train dispatching system comprising a telephone circuit including a dispatchers receiver, a transmitter for each of a'plurality of control locations of the track, a repeating phonograph cooperable witheach transmitter, train-controlled vmeans for connecting the transmitter of a control location to said circuit and bringing the corresponding phonograph into operation when a train approaches such control location, and means controlled by said circuit and selectively controlling said transmitters and phonographs to disconnect the transmitters from the circuit vand to stop the phonographs.

7. A train dispatching system comprising receiver and a dispatcher-s selector key, in combination with a 'set of devices for the approach to each of a plurality of control locations of the track, including an electrically operable phonograph, an electrically operable switch device controlling said phonograph,` means for transmit-ting. the sounds from said phonograph to said circuit, train-controlled means controlling sad switch device for. bringing the phono- Graph into operation when a train passes. and aselector controlled by said circuit and controllincr said switch device to control the phonograph from said circuit and selector ey. y

8. A train dispatchng system comprising a telephone circuit including a ldispatchers receiver and a dispatchers selector key, of a set of devices for the approach to each of a plurality of control locations of the track, including a transmitter, an electrically operable phonograph, an electrically operable switch device controlling said phonograph, an electrically operable switch device for connecting the transmitter in said circuit` train-controlled means .controlling both of said switch devices for connecting the transmitter in said circuit and bringing the phonograpli into operation when a trainpasses, .and selectors controlled by said circuit and individually controlling said switch devices.

9. A train dispatching system comprising an electrical circuit including a dispatchers indication receiver, aftrain-carried identifying indication transmitter operable at a substantially uniform speed independently of the speed of movement of the train, and means at the approach to a control location of the track cooperable with said transmitter when the train passes for transmitting the indications to said circuit.

10. A train dispatching systeln comprising a telephone circuit including a dispatchers receiver, a train-carried identifying code transmitter operable at a substantially uniform speedindependently of the speed @of movement of the train, a sound producer at theapproach to a control location of the track, and cooperable with said transmitter when the train passes for the control of said sound producer from said transmitter, and means for transmitting sounds of saidsound producer to said circuit. l

l1. A train dispatching system comprising an electrical circuit including a dispatchers receiver, a train-carried identifying telegraph code transmitter operable at a substantiall transmitter when the train passes, a transmitter cooperable with said sound producer, and means controlled by said circuit for connecting the lastnamed transmitter With and disconnecting it from saidcircuit/ 13. A train dispatching system comprisin an electrical circuit including a dispatcher s indication receiver, la train-carried identifying indication transmitter, means at the approach to a control location of the track in- .cluding cooperating elements on the train and track for transmitting the indications to saidcircuit, and operating means for said transmitter controlled by said elements to operate the transmitter when said elements are cooperating.

14. A train dispatching system comprising an electrical circuit including a dispatchers receiver, a train-carried identifying tele graph code transmitter, a ticker at the appreach to a control location of the track, cooperable means on the train and track including cooperable elements for the control 4from said circuit, train controlled means uniform speed independently of. the spec of movement of the train, a ticker.

of said ticker by said transmitter when a train passes, means for transmitting the indications of said ticker to said circuit, and means for operating said transmitter controlled by said elements to bring the transmitter into operation when said elements are cooperating. Y

l5. A train dispatching system comprising an electrical circuit including a dispatchers indication receiver, a train-carried identifying indication transmitter operable independently of the speed of movement of the train, means controlling said transmitter and operable to bring it into operation when The train approaches a control location of the track, and means on the track cooperable with said transmitter for transmitting the indications to said circuit.

16. A train dispatching system comprisin a telephone circuit including a dispatchers receiver, a telephone sound transmitter for each of a plurality of control locations of the track, switch devices for connecting said transmitters with and disconnecting them 90 controlling said devices for automatically connecting the corresponding transmitter with said circuit when a train approaches a control location, train controlled means for impressing distinctive train location and train-identifying sound Waves in said transmitters when trains approach the corresponding control locations, and selective means controlled by said circuit and controlling said switch devices.

17. A train dispatching system comprising a telephone circuit including a dispatchers indication receiver, a tele hone transmitter at each of a plurality o control locations of the track arranged for transmitting telephonic sound Waves to said circuit, and train-controlled means for producing distinctive sound Waves in said transmitters as trains approach the corresponding control locations.

18. A train dispatching s stem comprising a telephone circuit inclu in a dispatchers indication receiver, and train-controlled means operable at a substantially uniform speed independently of the speed of movement of the train for transmitting distinctive indications to said circuit when trains approach a plurality of control locations of the track so as to identify the particular control locations, and to transmit other distinctive indications to said circuit to identify the particular trains.

19. A train dispatching system comprising a telephone circuit including a dispatchers receiver, train-controlled means at the approach to each of a plurality of control locations of the track operable at'a substantially uniform speed independently of the speed of movement of the train when ,a train paasses to transmit distinctive indicallO , la'r control location, vand train controlled the speed means operable at a substantiall 'uniform speed in ependently of the spee of movement of the train when a train approaches one of said control locations to transmit distinctive `indications to said circuit to identi the particular train.

train dispatchingl system compris-` ing an electrical circuit inc u ing a dispatchers receiver, train-controlled means at the approach to each of a plurality of control locations of the track operable at a substantia-lly uniform speed independently of of movement of the train when a train passes a point of the track to transmit distinctive indications to said circuit to identify the 1particular control location, and train contro ed means including cooperable elements on the track and train operable at a substantially uniformv speed independently of the speed of movement VAof the train for transmitting other distinctive indications to said circuit at 'a point beyond the aforesaid point toidentify the particular train.Y A

21. A train dispatching system comprising a telephone circuit includirl a dispatchers receiver, transmitters a pted to transmit sound waves to said circuit,.train controlled distinctive sound producers for different control locations of the track cooperable with said transmitters and brought .into operation when a train approach the rticular control location, other sound proucers cooperable with said transmitters, and a train-carried identi code transmitter cooperable with the astnamed transmitters when the train approaches the corn responding control locations, for identifying tliJev train.

22. A trainv dispatching system compris- 4 ing an electrical circuitY including a dispendently of the a telephone circuit including receiver and a diiatche s transmitters 'for ,di

patchers indication receiver, train-controlled means at. the a roach to each of a plu-V rali ofcontro ocations of the track operab e at a substantiall speed-indespeed of movement of the trainwhenatraintotransmitdistinctive indications to said circuit to iden- .tify the particular control location, a traincarried identifying l operable at a substantiall uniform vspeed independently of the of movement of the train, and means at each of said aprable with said transmitter preaches coope h when the train aes for transmitting the indications to said circuit.

23. A train dispatching system comprisin a dispatcher s selector key,

of the track, electrically o Y e distinctive sound producers coo ra e with said trans- 'tters for identifying theb connecting indication transmitter erent control locations necting said transmitters in said circuit train-controlled means controlling both o4 said devices at each control location .for conthe corresponding transmitter in said circuit and bringing the corresponding r sound producer into o ration when a train passes, a ticker at eac of said approaches coopeivable with said transmitter, a traincarried identif ing telegraph code transmitter, cooperahle' means on the train and -track for the control of said tickers by said telegraph code transmitter when the train passes, and selectors controlled by .said cirr cuit and individually controlling said switch Y devices. 24. A train dispatching system including a plurality of signal devices at a control location of the track, a control circuit including a Vdispatchers key, and means operable for connecting all of said devices insuccession in said circuit for the individual control thereof by said key.

25. A train dispatchin system compris-- ing a pluralit of si evices at a control location of t e trac a control circuit includjng a dispatchers key, and means operable for connecting all of said devices in succession in said circuit for the control of said devices one at a time, by said key.

26. A train dispatching system including a plurality' of signals at a control location v of the track, switch devices controlling said ico signals, a control circuit including'a dis- A patchers key, and a commutator device opei-, able for connecting all of said switch devices insuccession in said circuit for the individual control of said switch devicesI by said key.

27. A train dispatchingn'systeminclldllg a plurality of signal-,devices at each of a.,V plurality of control locations of the track,

an electrical circuit `having a'fdispatchers selector key, a signal' control circuit including a di atchers signal control key, means at each o said control locations o rable for connecting all o'f the correspondiiig signal devices in succession in* the al control circuit for the individual contro of said de-v vices by the signal control key, and selectors iis in the firstnamed circuit controlling the 't lastnamed means. .e

28. A train 'dispatching sistem including a plurality of signals at eac of a plurality of control locations of the track, an electrical circuit including a dispatchers-selectorfkey, a si al Acontrol circuit inclu pate ers signal control key, switc devices at each of said control locations contro said signals, a commutator device at eac v of said control locations operablefor connecting the corresponding Switchdevices'in succession ingsaid signal contrelcrcuit for the control of the signals by said signal control key, and selectors in the irstnamed circuit controlling the commutator devices.

29. A train dispatching system including a plurality of signals at each of a plurality of control locations of the track, an electrical circuit including a dispatchers selector key and a dispatchers receiver, a signal control circuit including a dispatchers signal control key, switch devices at each of said con-` trol locations controlling said signals, a commutator device at each of said control locations operable for connecting the corresponding switch devices in succession in said signal control circuit for the control of the signals by said signal control key, selectors in the firstnamed circuit controlling the commutator devices, and m'eans controlled by each commutator device for producing indications in the iirstnamed circuit before each switch device is connected in said signal control circuit.

30. A train dispatching system including a plurality of signal devices at a control location of the track, a dispatchers signal control key, a dispatchers selector key, and means controlled by said selector key and operable by a single completed operation for electrically connecting the signal control key individually in succession with said signal devices.

31. A train dispatching system including a plurality of signal devices at a control location of the track, a dispatchers signal control key, a dispatchers selector key, and-a commutator device controlled by said selector key and operable by a single completed operation for electrically connecting the signal devices in succession with said signal control key.

32. A train dispatching system comprising a telephone circuit including a dispatchers receiver and a dispatchers selector key, train-controlled means for transmitting distinctive indications to said circuit when trains approach a plurality of control locations of the track so as to identify the particular control locations, and to transmit other distinctive indications to said circuit to identi the particular trains', a set of signal devlces at each control location, a control circuit including a dispatchers signal control key, a selector for each set of signal devices controlled by said telephone circuit, and means controlled by each selector for automatically connecting the signal devices of the corresponding set in succession with the control circuit for individual control -of said signal devices by the signal control key.

33. A train dispatching system comprisin a telephone circuit including a dispatcher s receiver and a dispatchers selector key, train-controlled means for transmitting distinctive indications to said circuit when trains approach a plurality of control locations of the track so as to identify the particular control locations, and to transmit other distinctive indications to said circuit to identify the particular trains, a set of signal devices at each control location, a control circuit including a dispatchcrs signal control key, a selector for each set of signal devices controlled by said telephone circuit, means controlled by each selector for automatically connecting the signal devices of the corresponding set in succession with the control circuit for the individual control of said signal devices by the signal control key, and other selectors controlled by said telephone circuit and controllin the rstnamed means to stop such transmision of indications to said telephone circuit. l

34. A train dispatching system comprising an electrical circuit including a dispatcher s printing transmitter, printing devices at different locations of the track, and means for selectively connecting said devices with said circuit.' y

35. A train dispatching system comprising two electrical circuits, one including a dispatchers selector key and the other including a dispatchers printing transmitter, printing devices at different locations oi the track, and selectors controlled by the firstnamed circuit for selectively connecting said devices with the secondnamed circuit.

36. A train dispatching s stem comprising an electrical circuit inclu ing a dispatchers selector key, another electrical circuit including a dispatchers printing transmitter, printing devices at different locations of the track, switchdevices for connecting said printing devices with the secondnamed circuit, and selectors controlled by the firstnamed circuit and controlling said switch devices.

37. A train dispatchin stem comprisin a telephone circuit incllu ing a dispatchers indication receiver, a tele hone transmitter at each of a plurality o locations of the track arranged for transmitting telephonie sound waves to said circuit, and

means controlled at distances from said transmitters for selectively connecting said transmitters with said circuit.

38. A train dispatchin system comprising a telephone circuit inc uding a dispatchers indication receiver, a' telephone transmitter at each o f a plurality of control locations of the track arranged for transmitting telephonie sound waves to said circuit, and train controlled means for connecting said transmitters with said circuit when trains approach and pass said locations.

39. A train dispatching system comprising` a telephone circuit including a dispatchers indication receiver, a, tele hone translll mitter at each of a plurality o locations of the track f arranged for transmitting telephonlc sound waves to said circuit, and

means controlled at the location of the dispatchers indication receiver vfor selectively connecting said transmitters with said circuit.

40. A train dispatching system comprising a telephone circuit including a dispatchers indication receiver, a telephone transmitter at each of a plurality of locations of the track arranged for transmitting tele- 10 phonic sound waves toA said circuit, means controlled from said circuit for selectively connecting said transmitters with-said circuit and means at the 'location of said dispatchers indication receiver and connected to said circuit to control the aforesaid means selectively.

In testimony whereof I hereunto aiiix my signature.

ROBERT L. PAGE.