US767952A

US767952A - Block-signal.

Info

Publication number: US767952A
Application number: US15823603A
Authority: US
Inventors: Charles H Morse
Original assignee: UNI SIGNAL Co
Current assignee: UNI SIGNAL Co
Priority date: 1903-05-22
Filing date: 1903-05-22
Publication date: 1904-08-16
Anticipated expiration: 1921-08-16

Description

PATBNTED AUG. 16, 1904.

o. H. MORSE.

BLDCK SIGNAL.

APPLIOATION FILED MAY 2n. 1903.

N0 MODEL.

l/izesses PATENTBD AUG.16`,1904.

'Y C. MORSE, BLOCK SIGNAL. APPLOATION FILED MAY 22. 1903.

N0 MODEL.

llfzzeused f/ L UNITED .STATES Patented August 16, 1904.

PATENT EEICE.

CHARLES H. MORSE, CE CAMBRIDGE MASSA lUNI SIGNAL COMPANY, or CAMBRIDGE, MASSACHUSETTS, A CoRPo- RATIoN CE MAINE.

BLOCK-SIGNAL.

SRECIFICATION forming part of 4Letters PatentNo. 767,952, datedAugust 16, 19.04; Application filed May 22, 1903.l Serial No. 158,236. (No model.)

To f-LZ'Z Ywhom it mrtg/concern:- D

Beit known that I, CHARLES I-I. MORSE. of

Cambridge, county of Sulolk, State of Massachusetts, have invented an Improvement in Block-Signals, of which the following dpe-I scr'iption, in connection with the accompanying drawings, is `Aa specication, like charac` ters on the drawings representing like parts.

This invention relates to block-signals of the type especially adapted for use-as trolley-signals for electric railways. Block signals usually have a danger-signal of this type and a safety signal at each end of the block adapted to be set by means operated by the car when entering the block and to be put out by means operated by the car whenleav ingl the block, the current for said signals (if incandescent lamps are employed as signal-lamps) and the current for operating the means provided for setting and putting out the signals being taken from the or other current-carrying wire.

This invention has for its object to simplify the construction o1c the operating mechanism in severaly part-iculars;r.toI provide asignalcontrolling switchv at each' end of the block adapted to occupy two positions, one to set and the other to put outthe signals, and to provide means for holding the arm of-said switch in either of the aforesaid positions; to provide mechanical connections lbetween thev arm of said switch and the 'armatures of the ligl'iting-magnet and pnt-out magnet, whereby said switch-arm is positively operated by 'said magnets; to provide meansfor reducing the attractive. forcel of the put-out magnets adapted to be operatedl andcontrolled by the lighting-magnets,*whereby the pull of said pnt-out-magnets is reduced to such an extent as not to overpower the pull oi' the lightingfmagnets, andthereby restore the set signals -in case said put-ont-magnets should become accidentally energizech--to -provide a second switch forV lthe signal-'circuit at each endof the bloclnwhich is operated by the put-out lII-Iagnet thereat to open said signal circuit,

and thereby denergize tbe lighting-magnet in order that the pull of the put-out magnet trolley-wire l maybe suiiicient to reset thesignal-controllall oi'- the operating parts of vthe box which is removably connected in the box, so that it may be removed easily with all the parts assembled thereon. l

Figure l shows in front elevation a trolley signal-box embodying this invention, the shell or case of the box being shown yin vertical section. Fig. Qis a vertical Section of the trolley signal-box shown in Fig. l,v taken on the dotted line 2 2, but on a smaller scale. Fig. 3 is a detail showing in front elevation the removable'bacl -plate which supports all the essential parts assembled. Fig. 4 is-a detail showing in vplan view the removable back plate and the lighting-magnet and putout magnet supported thereon. Fig. 5 is a vertical section of the put-out magnet, which is represented as a solenoid having a main and a secondary armature. Fig. 6 is'a diagram of the circuits and operating parts inthe positions they will occupy when the car is on the'block and going in a direction toward the right as represented by the arrow.

a represents the trolley-wire or other current-carrying wire.- The signal-wire is permanently connected to the trolley-wire atv eachv endg-o1c theblock andat each end'of the block passes through the box which contains the visual signals and operating parts therefor, and for the sake oi clearness said slgnal-wire lis represented in diagram, Fig. 6, by a wide line.

In each box the visual signal c is included directly in the signal-Wire, and saidsignal is v hereln shown as an Incandescent lamp, and

this signal is intended toserve as the dangersignal. In each box a switch is provided,herein called the signal-controlling. switch, which is adapted to normally hold the signal-wire b closed, but when operated or moved in one direction toopensaidsignal-wire and also to connect one partor end of SaidSignal-wire with a ground-.\vi1'"e'to thereby'complete or establish a circuit, herein called' the signalcircuit. This switch constitutes the signal-- CHUSETTS, ASSIGNCR To THE controlling switch for setting the signals, and the circuit established by it when operated leads from the trolley-wire a or other currentcarrying wire at the remote or distant end of the block to the ground at the opposite end of the block. i

The signal-controlling switch consists of an arm or blade CZ, depending from a pivot d and normally occupying approximately a vertical position, and a pair of spring-acting contact llingers or plates d2, which receive between them, and thereby engage, the lower end of said arm or blade CZl when the switch-arm is in the position to hold the signal-wire closed. The spring-acting contact-fingers d2 engage and hold the arm d frietionally, so that a little pull is required to disengage said arm.

Normally the switch-arms of both boxes will occupy the position shown in the righthand box, Fig. 6, and consequently the signalwire b is closed at each end of the block. When the switch-arm d is moved out of engagement with the contact-fingers d2, it will `bemoved into engagement with a pair of like and the ground-wire f connected to one of the.

disconnected ends of the signal-wire, and consequently the safety-signal g will be included in the circuit thus established at the box wherein said switch-arm is moved, and thereby set or caused to glow, and the circuit including the signal-wire b being thus established the danger-signal c at the opposite end of the block will be also set or caused to glow. 1n the diagram shown in Fig. 6 the signalcontrolling' switch of the left-hand box is thus moved, and the safety-signal g in said box is set, and the danger-signal c at the opposite end o f the block is also set. Y

At each'end of the block means are provided for operating the signalcontrolling switch thereat to set the signals at both ends of the block, and said means is adapted to be operated by the trolley-wheel as the car enters the block. The means herein shown for accomplishing this result consists, essentially. of a circuit-closing device L, arranged in such proximity to the trolley-wire as to be oper- 4ated by the trolley-wheel, one member of said device being connected by a wire Q permanently with .the trolley-wire and the other member being connected by a wire 3 with the ground-wire f, and whenever the trolleywheel passes beneath either circuit-closing device /1/ the said device is operated by said wheel and the ground-wire f momentzu'ily connected to the trolley-wire and the circuit thereby established, which includes the wire 2, circuit-closing device t, wire 3, and groundwiref.

' An electromagnet 1i is included directly in the ground-wire f, which, as herein shown, is made as a stopped-coil solenoid, and also in said ground-wiref a suitable resistancej is included. The solenoid 'a' is vertically disposed, and the projecting end of its armature i has a notch or recess which receives the outer end of an arm (Z5, which is rigidly connected to the arm (Z of the signal-controlling switch and which works on the pivot d. lt is obvious that the arm d may be otherwise connected v'ith said armature, so as to be operated positively by it.

Normally the gromid-wirej1 is open at each endv of the block, as is indicated by the diagram at the right hand of Fig. (i, and consequently the solenoid '2l is normally deenergized and its armature retracted; but whenever the circuit-closing device /1/ is momentarily closed by the trolley-wheel passing beneath it and the circuit including the groundwire f established then the solenoid 1' attracts its armature and moves the arm af and correspondingly moves the switch-arm K from the position shown at the right, Fig. 6, to the position shown at the left, Fig. 6, which opens the signal-wire I) at (Z2 and closes the groundwire f, with the signal-wire 7; at e. 'lhe solenoid ai therefore serves as the means for positively moving the signal-controlling switcharm to set the signals and constitutes the lighting or signal-setting magnet.

The current which passes from the trolleywire over the

wires

2 and 3 and grouml-wire f is only momentary, but is sulicient to energize the solenoid in order that the latter may perform its work of moving the switcharm d. The switch-arm al when in engagement with the contact-lingers f positively counects the ground-wire, including the safetysignal g, with the signal-wire in such manner as to take the current from the opposite or leaving end of the block, and as the danger-signal c is directly included in said signalwire bat said leaving end of the block and has not been cut out by the switch-arm d thereat it is set, whereas the danger-signal c at the entering end of the block is cutout by the moyement of the switch-arm (Z above described.

The operation of the parts caused by the car entering theblock from either end is the same and is as follows: The circuit-closing device /1 is operated bythe trolley-wheel, and the cul'- rent from the trolley-wire passes over the

wires

2 and 3 and ground-wire f and energizes the solenoid i', and as the armature of said solenoid vi attracts the switch-arm l is moved out of engagement with the contact-lingers d lOO and into engagement with the contact-lingers f with the signal-wire Z at -the entering end yIO of the block, including the safety-signal g, and the current is taken from the far or leaving end of the block over the signal-wire Z, which includes the danger-signal c and switch-arm cZ at the leaving end of the block and theswitcharm OZ, contact-ingers e, and ground-wire f at the entering end of the block. The safetysignal g is thus setfat the entering end of the block and the danger-signal c is set atthe `leaving end of the block. While the signalsare thus set, if a loss of current occurs the signal-lamps will cease to glow; but the armature c" of the solenoid z' will remain in its attracted position by gravity, and the'switch-arm 'CZ will remain in engagement-with the spring contact-ngers e by friction, so that when the current restores, the parts'being in the same position as when the current ceased, the signallamps willagain glow.

the block, -means are also provided adapted to be operated at either end of the `block for positively moving the signal-controllingswitch-l arm UZ at the enteringv end of the block back to its normal position.

The put-out mechanismcomprises a put-out wire 1, which extends from end to end of the block, which passes through the boxes, and is permanently grounded at each end of the block by any suitable ground connection-as, for instance, it may be connected to the aforesaid ground-wiref. In each box an electromagnet is included in the put-out wire 7c, herein shown as a solenoid m, having a tubular core open from end to end and containing two armatures m m2, disposed in alinement'and movableinto and out of the tubular core in opposite wa'ys. The armature m is herein referred to ast'he main armature and the armature m2 the arm Z will be disengaged from the contact-y lfingers e and moved into engagement with the contact-lingers Z2 and the armature c" moved into its retracted position. Between the solenoid m and ground-terminal -a resistance v 1s included.

To energize the solenoid m, current is taken secondary armature. The armature m has i the trolley-wire as to be engaged by the trolley-wheel, and one member-of said circuitclosing device is connected by the wire i with the'trolley-wire and the other member is connected by a wire 5 tothe put-out wire 7c, and

whenever said circuit-closing device is operated the current'passes from the trolley-wire over the wires i andv 5 to the put-out wire and thence to the ground through the solenoid m. The operation of the circuit-closing device is of course only momentary, yet suflicient tocause the solenoid m to become energized. The solenoids at both ends of the block will be energized by the operation of either circuit-closing device n; but as the armature m of the solenoid vat the leaving end of the block is already in its attracted position itf'will not be moved.

The .signal -circuit when established includes the permanent connection with the trol- 1 ley-wire at the leaving end of the block and To put out the signals Lwhen the car leaves the ground connection f at the `opposite or entering. end of the block, and in addition tothe signal-lamps c and g glowing thelsolenoidlz' at the entering end of the block is kept energized, and therefore continues to positively hold the signal-controlling switch-'arm Z in the position shown at the left of Fig. 6, and it is desired and intended that thepull of the solenoid m at such time shall not be suflicient to overcome the pull of the solenoid z' and will only operate when the -solenoid z' is denergized. In carrying out this part of my invention the attractive force "of the solenoid m for its armatures is reduced when the lightingmagnet operates and sets the'signals by means to be hereinafter described, and a second switch or circuit-breaker is provided at each end of the block, which is included in the signal-wire Z and which is herein shown as a plug ,0, normally engaging a pair of contact-plates o', which are connected with the signal-wire, and said switch `normally maintains said signalwire closed; but when the plug 0 is moved-out of engagement with said plates othe signalwire at this point will be opened.

For simplicity of construction the plug -0 is connected with the secondary armature m2 of the solenoid m, so as to be operated by it whenever said solenoid is energized. Therefore whenever one of the circuit-closing devices n is operated to connect the put-out wire with the trolley-wire or other current-carrying wire and both solenoids m m energized Vboth switches 0- 0 will be operated, and the operation of the one that is located at the leaving end ofv the -block opensV the signal-circuit Z, causing thesolenoid z' at the opposite or en-` tering end of the block to d'energize, and thereby permit the solenoid m at :said entering end of the-block toattract its -Inain` armature m and restore the switch-arm ZZ. The

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IZO

operation of the switch o o' at the entering end of the block will produce no result. Thus to restore the switch-arm (Z both solenoids m are required to operate, one to litt, and thereby open the second switch or eircuit-ln'eaker 0 0', which controls the signal-circuit, and the other to attract its main armature, and thereby positively return the switch-arm Z when permitted so to -act by the solenoid 'ai becoming deenergized.

In case the signal-circuit and put-out wire 7; should become crossed while the signals are set, it is necessary to prevent the put-out wire,

which under such circumstances would take current from the signal-wire, 'from operating to put out or restore the signals. Such a cross is indicated. by the dotted line p, Fig. 6, and the current will pass from the signal-circuit Z; to the put-out Wire 7c and then through the solenoid m at the right-hand end oi' the block tothe ground, and immediately the secondary armature m2 will be attracted and the plugsWiteh 0 0f opened, thereby opening the signal-circuit, and as soon as said signal-circuit is thus opened the armature m2 will immediately retract and the switch o o again close the signal-circuit. This operation will be repeated rapidly while the wires are thus crossed. Hence the plug-switch 0 o thus rapidly opening and closing the signal-circuit, or, in other Words, vibrating, will visually indicate that the put-out wire and signal-circuit are connected, the armature m of the solenoid m,` at the right-hand or leaving end ot the block being in its attracted position at such time will not be aiected. In case the wires are thus crossed the current will also pass through the put-out wire and through the solenoid ml at the opposite or entering end otl the block, and it is of the utmost importance that the solenoid 1n. thereat should not be energized sufficiently to attract its armature n/because in such case the signal-controlling switch-arm (Z Would be restored and the safety-signal g restored to normal or extinguished. Each solenoid m is therefore constructed to exert a variable attractive force on its armature, so that the solenoid m at the entering end of the block may be adjusted in such manner that .i `site or leaving end of the block.

. tion 1n the attractive force exerted is obtained `by providing an air-gap in the core of the its attractive Jforce is materially reduced, and as a result it will not overcome the pull of the solenoid t' and also will not attract its armatures as quickly as the solenoid m at the oppo- This variasolenoid of varying dimensions, and when the air-gap 1s largethe attractive force of the solenoid is correspondingly less than when' said air-gap is small. This air-gap is represented at q, Fig. 5, and in said ligure is reduced to its minimum size, as it will be in the solenoid at the leaving end of the block when the signals are set; but in the solenoid at the entering end ol: the block when the signals are set the armature f/i/ is \\f'ithdrawn from the core mechanically by the lighting-magnet into its retracted position and the air-gap is increased to such an extent that the attracti ve lorce oi the solenoid is materially diniinished, and as a result the solenoid becomes slower to act, Therefore in case olI a cross connection between the signal-wire andr put-ou t wire the solenoid in, at the leaving end of the block will act sooner than the solenoid m at the entering end of the block and will open the signal-circuit before the solenoid m,y at the entering end of the block can-act, and it will also be seen that in case the put-out wire receives current from the signal-wire or the trollev-wire or vother current-carrying wire the armature m of the solenoid at the entering` end ol the block will not be attracted and operate the signalcontrolling switch and restore the signals unless the lighting-magnet is lirst denergized.

The signal-laim'is and olwrating devices therefor are contained in a4 suitable box or case ZI, and lior simplicity of construction and ease oit inspection and repair the signallamps are attached to a shelf i, which is secured to a bacl 1r late (fi, removably connected tothe box, its lower edge resting in a groove formed in a ledge and its upper edge having a hole t through it of suitable size to receive the hand oll theinspector, through which projects a boss fr, having a turn-lmtton I pivoted to it, which is adapted to be turned into position to engage the back plate.

The solenoids i and m aremounted on said back plate I?, and so, also, are the resistancecoils and switch-arm and spring-acting contact-lingers (/"i and (I. On top oll the shell z5' several pairs of contact-lingers are provided which receive the lower ends ol the luses ff, which complete the electric amnection between the outside wiring and the boxwiring, said fuses being removable. ly removing the fuses or disengaging their lower ends Ylirom the contact-lingers and then turning the button t the back plate and all the parts mounted upon and supported by it may be removed in assembled position.

IfIaving thus described my invention, what I claim as new, and desire to secure by Letters Patent, is--- l. In a block-signal having a danger-signal and a safety-signal at each end o l the block, and circuits therefor, a signal -controlling switch at each end oil the block, means for holding the arm ot said switch in either ol vits positions, a lightilig-magnet, and a put-eut magnet at each end olt the block and circuits therefor, and a mechanical connection between the armatures oi said magnets and the switcharm, whereby said switch-arm is positively moved in opposite ways, b v said magnets, and the armature ol the dernergized magiiet positively retracted, means lor operating the IOO lighting-magnet for reducing the attractive,

force of the adjacent put-out magnet, substantially as described.

3. In a block-signal havinga danger-signal and a safety-signal ateach end of the block,

and circuits therefor, a signal-controllingA switch at-each end of the block, a lightingmagnet and a put-out magnet at each end of the block for operating the switch thereat, and a second switch at each end of the block, one for each signal-circuit, each operated by the adjacent described.

4. In ablock-signal having a danger-,signal and safety-signal at each end ofthe block, and circuits therefor` a signal-controlling switch at each end of the block, a lighting-magnet and a put-out magnet at each end of the block for operating the switch thereat and a second switch at each end of the block operated by the put-out magnet thereat, which control the signal-circuits, substantially as described.

5. In a block-signal having a danger-signal and safety-signal at each end ofthe block and circuits therefor, a signal-controlling switch at each endof a block, a lighting-magnet and a put-out magnet at each end of the block for operating the switch thereat and a second switch at each end of the block operated by the put-out magnet thereat which control the signal-circuits, and means operatedv by each lighting-magnet for reducing the attractive force of the adjacent put-out magnet, substantially as described.

6. In a block-signalhaving a danger-signal and a safety-signal at each end of the block,

and circuits therefor, a signalcontrolling switch at each end of the block, a lightingmagnet and a put-out magnet at each end of the block, arms connected with the arm of the switch which engage the armatures of said magnets, means for holding the switch-arm with either one of the armatures attracted and the other retracted, a circuit' for said lightingmagnet and means for operating it, and a circuitfor said put-outmagnet, and means for operating it and means for opening the said signal-circuit, substantially as described.

7 In a block-signal having a danger-signal and safety-signal at each end of the block, and circuits therefor, a signal-controlling switch at each end of the block, a lighting-magnet and a put-out solenoid at each end of the block, means formechanically connecting the armatures of said magnets and solenoids with the put-out magnet, substantially as arms of the signal-controlling switches, a second switch at each end of the block which control the signalcircuits and means for operating it consisting of a secondary armature arranged lto be operated bythe put-out solenoid, substantially as described.

8. In a block-signal having a danger-signal and a safety-signal at each end of the block, and circuits therefor, a signalcontrolling switch at each end of the block, a lightingmagnet and a put-out solenoid at each'end of the block, the attractive force of the latter being reduced by the retraction of its main armature, arms connected with the arm of said switch which engage the armatures of said magnets and solenoids, means for holding the switch-arm with either one of the said armatures attracted and the other retracted, va second switch at each end of the block which control the signalcircuits and means for operating it consisting of a secondary armature for the put-out solenoid, circuits for the lighting-magnets and a circuit for the put-out solenoids, and means for operating said circuits, substantially as described.

9. In a block-signal having a danger-signal and a safety-signal at each end of the block, and circuits therefor, a signalcontrolling switch at each end ofthe block; a lightingmagnet and a put-out solenoid at each end of the block` for operating the switch thereat, arms connecting the arm of the signal-controlling switch at each end of the block with the armatures of the adjacent lighting-magnets and put-out solenoids, whereby the attracted movement of the armature of either lighting-magnet moves the armature of the adjacent put-out solenoid into its retracted position, and thereby reduces the attractive force of said solenoid at the same time thatit moves the signal-controlling switch, substantially as described.

10. In a block-signalhavingadanger-signal and a safety-signal at each end of the block, and circuits therefor, a signal --controlling switch at each end of the block, a lightingmagnet and a put-out magnet at each end of the block for operating the switch thereat, the

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attractive force of said put-out magnet being v reducedv by the retraction of its armature, arms connected with the 'arm of said switch which engage the armatures of said magnets,

whereby the attracted movement of the lighting-magnet moves the armature of its adjacent put-out magnet into its retracted position, means for holding the switch-arm with either one of said armatures attracted and the other retracted, a second switch at each end.r of the block which control the signal-circuits, and means for operating it, substantially as described.

1l. In a block-signal having a danger-signal and a safety-signal at each end of the block, and circuits therefor, a signalcontrolling switch at each end of the block for setting the signals and for including the adjacent lighting-magnet in the signal-circuit, a lightingmagnet at each end of the block .having a gravitating armature connected with the signal-controlling switch thereat, and means for putting out the signals and for lifting said gravitating armature into its retracted position, substantially as described.

12. In a block-signal having a danger-signal and a safety-signal at each end of the block and circuits therefor, a signalcontrolling switch at each end of the block, a lightingmagnet and a put-out magnet at each end of the block, mechanical connections between the armatures of the lighting-magnet and put-out magnet and signal-controlling switch at each end of the block, whereby the signal-controlling switches are moved one way by the lighting-magnets to set the signals and lift the armatures of the adjacent put-out magnets, and are moved the opposite way by the putout magnets to extinguish the signals and lift I the armatures of the adjacent lighting-magnets, circuits for said lighting-magnets and put-out magnets and-means for operating said circuits, substantially as described..

'13. In a block-signal having a danger-signal and a safety-signal at each end of the block and circuits therefor, a signal-controlling switch at each end of the block, a lightingmagnet and a put-out magnet at each end of the block, each having a gravitating armature, circuits therefor, mechanical connections between the armatures of the lighting-magnet and put-out magnet and signal-controlling switch at each end of the block whereby said switch is moved positively in opposite ways and the armature of the denergized magnet lifted, and a second switch at each end of the block operated by the put-out magnet thereat which control the signal-circuits, substantially as described. i

14. In a block-signal having a danger-signal and a safety-signal at each end of the block and circuits therefor, a signal-controlling switch at each end of the block, a lightingmagnet and a put-out magnet at each end of the block, mechanical connections between the armatures of the lighting-magnet and put-out magnet and signal-controlling switch at each end of the block, whereby the signal-controlling switches are moved one way by the lighting-magnets to set the signals and lift the armatures of the adjacent put-out magnets, and are moved the opposite way by the put-out magnets to extinguish the signals and lift the armatures of the adjacent lighting-magnets, and means for holding the switches in either position that they may be set, substantially as described.

15. In a block-signal having a danger-signal and a safety-signal at each end of the block and circuits therefor, a signal-controlling switch at each end of the block, a lightingmagnet and a put-out magnet at each end of the block for operating the switch thereat, a. second switch at each end of the block, one lor each signal-circuit and means controlled by the put-out circuit for operating said second switches to thereby open the signal-circuits and permit the put-out magnets to restore the signal-controlling switch, substantially as described.

16. In a block-signal having a danger-signal and a safety-signal at cach end of the block and circuits therefor, a signal -controlling switch at each end of the block, a lightingmagnet at each end of the block for operating the signal-controlling switch thereat, which is included in the signal-circuit when the signal is set, means for operating said lighting-magnets, a put-out magnet at each end ol` the block for also operating thc sigmtl-controlling switch thereat, circuits for said put-out magnets and a second switch at each end of the block, one for each signal-circuit, and means controlled by the put-eut circuits for operating said second switches to thereby open the signal-circuits and permit the put-out magnets to operate, substantially as described.

17. In ablock-signal having a d a nger-signal and a safety-signal at each end of the block, and circuits therefor, a signal-controlling switch at each end of the block, a lightingmagnet at each end of the block-for operating said signal-controlling switches, and for holding them with the signals set, a put-out magnet at each end of the block for also operating said signal-controlling switches to extinguish the signals, circuits for said pnt-out magnets, means for operating' said circuits and a second switch at each end of the block for opening the signal-circuit to deenergize the lighting-magnet included therein, and permit the return ofthe signal-controlling` switch, substantially as described.

18. In a block-signal having adanger-sigmil and a safety-signal at each end of the block and circuits therefor, a signal-controlling switch at each end of the block having a. piroted switch-arm, a vertically-disposed lighting-solenoid at each end of the block, the armature of each lighting-solenoid being con nected with the adjacent pivoted switch-arm, and a vertically-disposed put-out solenoid at each end of the block, the armature of each put-out solenoid being connected with the adjacent pivoted switch-arm, circuits for said lighting-solenoids and put-out solenoids and means for operating'said circuits,substantially as described.

In testimony whereof I. have si gn ed my name to this specilication in the presence el two sul scribing witnesses.

CHARLES l I. MONS l1).

fitnessesz J. Norris, H. B. DAVIS.

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