US752127A - Railway switching and signaling apparatus - Google Patents

Description

PATENTED FEB. 16, 1904.

' J. I); TAYLOR. RAILWAY SWITCHING AND SIGNALING APPARATUS.

APPLICATION FILED JAN. 12, 1901.

3 SHEETS-SHEET 1.

N0 MODEL.

PATBNTED FEB 16, 1904.

APPLICATION FILED JAN. 12, 1901.

3 SHEETS-SHEET 2.

H0 MODEL.

5 6 8 4 I m 0 1 I 0 w 4 y -1 I 2 o x/ H I 9 I. MMPII 4H,... 1 lllll Q/IYIIII In 7 o o w Z. I; alilwr Z. P L; 4 1 I, OJ 7 .0 Z 5 2 5 F 7 6 v :12 6 Z a. I g 6 f 1 z In 1 4r Z 5 1 l 4/ I 2 PATENTED'FEB. 16, 1904.

J. D. TAYLUR. RAILWAY SWITCHING Am) SIGNALING APPARATUS.

APPLIOATION FILED JAN 12, 1901.

3 SHEETS-SHEET 3.

K0 MODEL.

Z'affnessepr Tow ll whom; it mag concern:

Be it known that I, Jomv D. TAYLOR, a citi- UNITED ST TE JOHN i); TAYI0R0F BUFFALO, NEW ronm-assienoa TO THE TAYLOR Patented February 16, 1904 PAT T, "OFFIcE.

sIeNAL.ooMPANY,.-oF BUFFALO, NEW YORK, A CORPORATION OF new YQ'RK.

RAILWAY SWITCHNG AND SIGNALING APPARATUS.

SfEOIFIGATION-forrndng part of Letters Patent No. 752,127, dated Fehruary 16, 1904. I

i i Application filed January 12, 1901, Serial No. 42,994- fiNo mndel.) I

zen of the United States, residing at Bufialo, New York, have invented certain new and useful Improvements in Railway Switching and Signaling Apparatus, of which the followingv is a full, clear,'and exact description.

.My invention relates to electrically operj ated and controlled: railway switching and s 'aling apparatus, and more particularly re ates to the employment of mechanical, electrodynamic, and electromagnetic appliances.

vfor. controlling, operating, and safe-guarding such apparatus in its use.

,The object of my invention is to overcome the defects heretofore existing in such apparatusnamely, the lack of absolute positiveness in action of the mechanical apparatus and the danger of a false indication or release of the mechanical apparatus by a crossing or short-circuiting of the wires of the'system,

which might otherwise produce such result.

In more specific terms the object of the improvement is to guard against the failure of the looking to hold 'until properly. released (including the event of any accident to the circuit controlling such release) and against failure to release at the propertime.

This invention is furthermore an improvement upon the device s of my former patents No. 516,903, 'March 20, 1894:; No. 554,097, February 4, 1896; No. 605,359, reissued as No. 11,983, 'May 6, 1902, and No. 707,181,

August 19, 1902.

This'invention conslsts of improved mech- V erated mechanism for releasing said locking ofother levers, the said magnetically-oper ated mechanism being actuatedby a current produced when the switch or signalcontrolledby said one lever has made its complete movement, and anew arrangement of circuits and magnets for securing a more cert-am release ofthe locking and to prevent such release or characters of reference indicate like parts,

show in Figurel a side elevation of my invention' sufiiciently in section to show the working parts; Fig. 2, an enlarged view in perspective of a portion of the same; Fig. 3, a section on the line w m of Fig. 1; Fig. i, a

' section on the line 3/ y of Fig. 1; Fig. 5, a detail plan view of the detent, pawl, wiper, and

adjacent mechanism. Fig. 6 IS a diagram of the circuits.

has a slot 2 formed therein. middle portion parallel to the direction of movement of the bar, and the two end parts are inclined thereto in the same direction and at equal angles. A roller 3 is pivoted to the jaw 4, formed on the end of the tappet-bar 5. The locking between levers -is effected by means of these tappet-bars and bars transverse thereto in'the usual manner employed in mechanical and other interlocking mechanisms which are well known. The bar 1 is guided by guide-plate castings, one of which is shown at 6, and by straps 7 across the top This slot has its of these guide-plates and is supported at the bottom by a slab 8, which lies in a vertical position and occupies a part of the space between the guide-plates 6. The slab'8 at the stantially fill the space between the guideleft in the drawings is of a thickness to sub-- v plates 6, while at the right its thickness is reduced, so as to form a rectangular space or slot between said slab and an adjacent plate 6 to form a recess within which the detent 9,

pawl 10, and the wiper 11 are free to move upon their respective pivots. In this recess and pivoted to the slab 8 are the latch or detent 9, the pawl 10, and the wiper 11. The detent 9 has an upwardly-projecting lug 12 at one end, which enters a notch in the lower edge of the bar 1, the said notch forming the shoulders 13 and 14. The detent 9 is supported in a position to hold this lug 12 in the notch in the bar 1 by the pawl 10, engaging in a notch 15 extent as to carry the roller 3, attached to the tappet-bar.5, along the horizontal portion of" so as to push it out of engagement in the.

in the detent 9' The detent 9 in this position, the bar 1 is capable of moving'only to such an the slot 2, but not to cause the roller to enter the inclined portions of the slot 2.

Directly under the pawl 10 a magnet 16 is supported, having an armature 17, guided by pins 18, attached to the cores of the magnets.

A rod 19 is attached to the armature 17 in such manner that when. the armature is attracted by the magnets 16 this rod 19 bears against a horizontal arm 20 of the pawl 10,

notch 15 of the detent 9.

The detent 9 is then free to fall by gravity,

which carries the lug 12 out of the path of the shoulders 13 and 14.

in the bar 1,thus permitting the bar 1 to make a further movement, which carries the roller 3, attached indirectly to the tappet-bar 5, through one of the inclined portions of the slot 2;

The pins 18 extend downwardly through the armature 17 and support the magnets 21, which are axially in line with the magnets 16. Non-magnetic washers 22 are interposed between the cores of the magnets 21 and the armature 17. The armature 17 normally rests ,down upon the washers 22 in proximity to the cores of the magnets 21 and is drawn from that position only when the magnets 16 are energized, and should the magnets 16 be energized by a crossing or short-circuiting,

as hereinafter described, the current passing in series, in such event both 16 and 21 would be energized and the armature 17 by reason of its position would be prevented from rising to give a false indication'or release, as hereinafter more fully described in connection with the circuits.

An upwardly-projecting lug 23, havingbeveled shoulders,i s formed on the opposite edge of the detent 9. The notches 24 and 25 are formed on the lower edge of the barl in such position that when the shoulders 13 or 14 are bearing against the lug 12 these notches 25 or 24 .are directly over the'lug 23, which permits the detent 9 to drop. The detent 9 is replaced in the notch between 13and 14 by the uncut portion of the bar 1 between the notches 24 and 25 passing over the lug 23, thus depressing this end of the detent 9 and elevating the opposite end. During the time that this por-' tion of the bar 1 lying between the notches 24 and 25 is passing over the lug 23 the lug or shoulder 13 on the bar 1 engages a fork of the wiper 11, causing it to partially rotate on its pivot and causing an arm of the wiper 11 to replace the pawl 10in engagement with the .detent" 9. The purpose of the wiper is to in sure the pawl 10 in engaging with the detent '9 and to lnsure that the armature 17 is pushed away'from the magnets 16 by the downward action, of the ar 20 of the pawl, 10 on the end 19.

- A vertical slot is cutthrough the slab '8 7 directly over the rod 19, and a rectangular tongue 26 slides loosely in'this slot and is of such length that when the rod 19 is at its low est point the said tongue 26 drops by gravity below the under side of the bar 1, and when forced upwardly by the thrust of the rod 19, due tothe raising of the armature 17,.said tongue projects into the path of travel of the bar 1. To permit of this,a longitudinal slot is cut in the lower rear edge of the bar 1, asshown in broken outline in Fig. 2. A lug 27is rigidly secured on the bar 1, projecting downwardly and occupying part of the space be,- tween the shoulders 13 and l4 in the notch of the'bar 1, the lug 27 being in the same vertical plane as the tongue 26, but not with the detent 9, and projecting into said longitudinal raised by the rod 19. When the 'magnets 16 are ,ener'gized, the tongue 26 is pushed upwardly, so as to lie within the path of travel of the lug 27, the object being to prevent the movement of the bar 1 during the time that the magnets 16 are energized in the direction opposite to the initialmovement as otherwise a false indication might be obtained.

In Figs. 1 to 5, inclusive, the parts are shown in fullline in the position they would occupy at the close of the middle movement or just before the final movement to reverse position. The full reversed position of the bar 1, roller 3, contacts a and 6, detent 9, and-pawl 10 is shown in Fig.- 1 in broken outline, and the contacts a and I) would stand insulated'at the extreme left. In the'reversed postion the bar would be at the extreme right, the roller 3 at its lowest point, the contacts a and b at the'extreme right, while the wiper 11, the detent 9, and the pawl 10 would be in the position indicatedin broken outline and the lug 27 would be at the right of the tongue 26; but since in moving from the normal the plates at and d g and f it, respectively, cannotmake a circuit theyproduce no effect until they close with the contacts 0 (Z and e f, respectively, at the close of the middle movement of the bar 1. In like manner the platesa and b produce no'eflect in passing from reverse to normal until they close with'the' contacted g and f it, as will appear hereinafter.

To explain further. Suppose the operator should pull the bar 1 toward its reversed position until stopped by the detent 9. p This would establish a circuit including the battery and a switch-operating motor, as hereinafter fully described, and would cause, the reversal.of the track-switch. As soon as the track-switch is completely reversed a-current generated by the motor, as hereinafter described, would circulate in the coils of magnet 16. This is for the purpose ofreleasing thevbar 1 to make its final movement to the reversed position; but as this current is of 'slot in the bar 1, so as to come in contact .with the tongue 26 when the said tongue is b in closing with .scnsible'duration, if the operator should push the. bar-1fhack toward its normal position an; continuance, even though the wiper f1, acting through the pawl ,10, does force the armature-away from the magnet, it would i. 'be drawn'zhack again as soon as the wiper assed the pawl, and the detent 9 would be re eased, thus ermitting a-full movement of the bar 1 to the normal position, while the trackswitch controlled by it would be in the reversed position. The tongue 26 effectually prevents this, because it prevents the bar 1 being moved back again during the contmuance of the current. a I The bar 1 is connected by means of a rod 28' with contact-springs a and h, which are electrically insulated from each other, which springs make electrical connection between the contact-blocks c d, d 19, and e f, f .k,

hereinafter fully described.

"The diagram of Fig. 6 shows the application of the apparatus and system to a switch leading from the main'track 29 to a side track and the signals governing the two routes which'may be set up. All parts of the mechanism, including the circuits and circuit-com.

trollers, are shown in this figure in what is technically known as the if normal position, which the bar 1 to the. left of the shoulder 14 willment'with the bar 1.

in this case would mean that the switch is set for the main track and the signals indicate danger. Inthis normal position the lug 12 of the detentQ will be down and out of engagenient with the harl. The full'part of be over the lug 12. The notch 24. will be over the log 23 of the detent 9,.and the wiper 11' will be in the position shown in broken lines in Fig; 1, and theflatch 10 will be in the positionshown in broken lines in that figure. In the extreme reverse position the lug 12 of the detent' 9 will be down and out of engage- The full part of the bar 1 to the right of the shoulder 13 will "be over the lug 12. The notch 25 will be over the lug 23. The latch 10 will be'in the position shown in broken lines, and the wiper 1 1 in the position shown in 'full lines inFig. 1.

To reverse the switchthat is, set it for the side track.the bar 1is placed in the position shown in Fig. 1 in full lines. This places the contact-springs a and b so. that (a makes else.-

trical connection between the contact-blocks c and (Z a nd 7; makes electrical connection between the contact-blocks and f. This closes a circuit of the battery 31, so that the current flows through the wire 32, magnets 21, wires 33 34, contact 1:, spring I), eonta'ctf, wire 35, contact-arm 1', wire 36, armature of switch-operatingniotor37, wire 38, contact-arm j, coils of motor licld-magnet 39, wires 40 41, back to the battery 31. This causes the rotation of the armature 37, which acting through inter-- mediate mechanism connecting it with the switch-rail moves the switch-rail. When the switch-rail is complctclylhomc and locked,

the pole-changing switch, consisting of the arms c and ,7 and suitable contacts, 1s reversed by means ofthe mechanism, as described in myPatentNo. 681,589, August 27,1901. The reversal of thispole-ehanging switch establishesa circuit including the switch-operating motor 37 and the indication-magnets 16, so that the current produced by the continued rotation of the motor-armature, due tome-A mentum, flows from the armature 37, wire 36, contact-arm 2 wire 42, motor-field mag-- net-coils 39, wires40 41 43, indication-ma net 16, wires 44 45,- contact 0, spring (1 contact d, wire 46, contact-army, wire 38, back to the armature 37. This current energizes the magnets 16, causing them to, lift the armature 17 and the rod 19, which acting on the pawl-10 disengages it from the detent 9, al-

lowing the detent to drop out of engagement with the bar 1.. This permits the bar 1 to be moved into its complete reversed position,

(shown in dotted lines in Fig. 1,) thus release ing the lever controlling the signal, giving trains the right to'enter the side track 30.

To reverse or clear thesignal, a bar similar in its essential features to the bar 1 and connected with the contact-spring is, Fig. 6. is

moved so that the spring In makes electrical connection between the contact-blocks Z and m. This closes the circuit of the battery 31,

so that the current flows through wires 47 i 48, contact 1, spring; k, contact. m, wire 49, contacts 12 and 0, connected by the arm 50, wire 51,.magnet 52,'wires 53 54, field-coils 55, armature 56 of thesignal-operating motor, wires 5758, contact 1), contact-springs q, contact 1r, wires'59, 60, and 41, back to battery 31. r

This causes the rotation of. the signal-motor armature, which acting through the intermediate gearing comprising the clutch operated by the magnet 52 puts one of the signal arms say the lower one (indicated at 61)into the clear or safety position, and when the sign-alarm has fully reached the safety position the springs q are thrown out of contact with the contact 11, thus breaking the circuit just described loctween 3; and q, as fully described in my former patent," No. 707,182, August 19, 1902. The

magnets 52 and 69 are the selector-magnets .fully described in my Patent No. 707,180, Au-

gust 19, 1902. The construction is such that when the switch is in one position the magnet 69 will be energized and cause the clutch to engage the mechanism setting the signalsay signal 70-and when the switch 50 is in the other position the magnet 52 will/be energized and in like manner cause the otlreflsignal-say 61to"be set; but this brealy'in the circuit is shunted by the magnet 62 and wires 71 and 72, which when the electrical connections between 1) and rare broken becomes cn ergized and operates the brake or clutch which holds the signal in the clear position, substantially as shown and deseri bed in my said former patent, No. 516,903, March 20, 189-1 The contact-arm 50 is connected mechanically to the switch-rail ,and' moves with it in. such manner-that when the switch is normal the arm 50 bridges'the contacts .9 and t the spring 70' away from the contact 1 and put -.it into electrical connection with m and u. The separation of Z and an electricallystops the current through the magnet 62, thus releasingthe signal 6-1, so that it returns to the normal .position by the action of the counterna'l-motor armature, duetothe'descent of the weight and at the same time returns the springs q to contact with grand r, and. the electrical connection'of m and u establishes a circuit containing the signal-operating motor and the indication or releasing magnet 63, so that'the current generated by the rotation of the sigcounterweight, flows from the armature 56 through wires 57 58, contact 10, springs q, con:

tact 1:, wires 59 60.41 64 65, through the mag- ,net 63, wire 66, contact at, spring 70, contact m, wire-49, contact n, contact-arm50, contact 0, wire 51, magnet52, wires 53.54, field-coils:

55, back to armature 56. This energizes the magnet63, causing it to release the operatingbar cordesponding to the bar 1 of the switchoperating lever, thus permitting the leverbar corresponding to bar 1 to make the final part of its movement, which movement re-. leases the locking between the bar of this signal-operating device and the switch-operating bar 1 which permits the switch to be put back to normal. The final movement also breaks the-electrical connection between the contacts m and'u, leaving the line or controlling wire 49 normally cut off" fromother parts of the interlocking machine.

ing mechanism at 9) is not efi'e'cted and none is required, since in setting up any route the signal is the last function to be cleared and there is no other looking to be released by the I final movement of 'the signal-lever; besides,

it is. necessary to maintain the electrical connections between the contacts Z and m in order to maintain the current through the magnet 62 and hold the signal to safety. In some particularcases it is required to clear a distant signal after a home signal is cleared. In this case the locking between them is effected .by means of a circuit-closer controlled by the home signal-such, for instance, as that formed by the springs g--making connection between the contacts '1: and a, which connects the re turn-wire from the distant signal to the common return-wlre.

In putting the signal-lever into the normal position- (the first above described) a release from the detent (shown in the switch-'operat- T0 put the rail-switch in its-normal posi tion, the bar 1= is pushed in until stopped by. the detent 9. This movement lowers the tappet-bar 5 into its middle .position, locking in this case both the signal-levers, and places the contact-springs aand b so that they may make connection between the contact-blocked g and f 70, respectively. This closes the circuit of the battery 31, so that the current flows from battery 31 through wire 32, magnets 21, wires 33 67, contact g, spring 2, contact 01, wire 46, contact-arm j, wire 38, armature 37, wire 36,

contact-arm i, wire 42, field-magnet coils 39,

wires 40- and41, back to battery 31. This rotates the armature 37 which through the in-. termediate' mechanism disclosed in my former v patent, No. 681,589, August 27 1901, replaces the rail-switch in itsnormal position. When the rail-switch is completely home and locked, the pole-changing electric switch, comprising the contact-arms i and j, is changed, cutting off the battery-current from the motor and establishing a circuit comprising the switch-operating motor 37 and indication-magnet 16, so that the current generated by the continued rotation of the armature flows from the armature 37 through wire 38, contact-arm j, fieldmagnet coils 39, wires 40 41 43 magnet 16,. wires 44 68, contact h, spring 6, contact f, wire 35, contact-arm 2', wire36, back to the armature37. This energizes the magnet 16 and releases the bar 1,-as before described, to make its final movement. The finalmovement of the bar 1 in this case releases the lever con- .trolling the signal governing the main trackroute. This signal may now be reversed;

roo

but it is unnecessary to describe thisoperation, as itis exactly like the operation before described. I

The magnets 21 are suspended under the 'magnets 16 by means of'the brass rods18,

which serve as guides for the armature 17. The armature 17 rests normally on the poles of the magnets 21, with thin brass washers 22 interposed to prevent the actual. contact of the magnetic metals comprising the armature 17 and the cores ofthe magnets 21. The Ob ect of the use of these magnets 21 is to prevent the, armature 17 being lifted by the magnets 16 in case an accidental cross between the wires 35 and 46 causes a current from the battery 31 to flow through the coils of the magnets 16, as such a current must go in series through the magnets 21 and 16, and as the armature is closer to the magnets 21 than to the'magnets 16 it is prevented from being lifted by the magnets 16, which 'might otherigo erly energized by said ind icationcurrent. This magnet 2.1 is not needed in connection with the signal-indimtion magnet 63, as a cross between the-signal-control wires would not affect the magnet 63.

In Fig. 6 .l have shown asccond spring and set of contact-blocks w w 1/ and a selectormagnet 69, by which another signal--sa,\,"thc upper one shown at 7i')'is operated; but as the operation would be identical with that of the one described further description is unnecessary.

Having thus described. my invention and its method of operation, what I claim is- 1. The combination of an interlocking mechanism of a bar actuating the same, a detent for holding said bar against final movement, a wiper actuated by said bar for locking said detent, a motor, an operating-circuit, an indicationcircuit, and means for shifting the motor from the operating to the indication circuit, and a magnet included in said indication-circuit for unlocking said detent, substantially as and for the purposes set forth.

2. The combination of an interlocking mechanism of a bar actuating the same, a detent for holding said bar against final movement, a lug on said detent capable of engagement with said; bar to mo veisaid detcnt, a latch for -lockin g said detent, a wiper actuated by said bar for rendering positive the'engagement of said latch in look with said detent, and electrically-operated means for unlocking said mechanism which looks said detcnt capable of acting upon said latch, substantially as and for the purposes sct forth.

3. In combination with an interlocking mechanism, a bar for actuating the same, a dctent for holding said bar against final movement, means for throwing said detent' in position for" engagement by the initial movement of the bar, a latch, awiper actuated by said bar for rendering positive the engagement of said latch in lock with said detcnt by the further movement of said bar, and electricallyoperated means for unlocking said detent to permit final movement at the proper time, comprising a magnet, an armature, and a rod on said armature capable of engaging said latch, substantially and for the purposes set forth.

4. The combination with an interlocking mechanism of a bar actuating the same, a detent for holding the bar against final movement, mechanical. means for locking said dc tent in engagement with said bar, consisting of a pawl and a wiper which is actuated by said bar and which-forces said pawl into engagement with said'detcnt, and means for releasing said detent comprisinga magnet, an

armature, and a rod on said armature capable of actuating said pawl, substantially as and for the purposes set forth.

5. The combination withamechanical interlocker. of a bar actuating the same, a detent for holding said bar against final movement,

' a pawl, and a wiper actuated by said bar for out of lock with said detent, substantially as i and for the purposes set forth.

I 6. In combination with a mechanical interlockcr, a bar actuating the-same, a detent for holding said bar against final movement, a pawl, and a wiper for forcing said pawl into lock with said detent, a magnet, armature and rod for forcing said pawl out of lock with said detent, a tongue actuated by said magnet cn-. gaging said first-mentioned bar and holding the same against reversed movement after said detent is unlocked and until said magmet is deenergized, substantially as and for the purposes set forth.

7. In combination with a mechanical interlocker, a bar actuating the same, a detent for holding said bar againstfinal movement, a pawl, 21. wiper for forcing said pawl into lock with said detcnt, a magnet, armature and rod for forcing said pawl out of lock with said detcnt, said'wiper having jaws engaging said bar whereby it is actuated and an arm which throws said pawl into engagement, and at the same time forces said armature out of contact with said magnet, substantially as and for the purposes set forth.

8. In combination with a mechanical interlocker, a bar for actuating the same, a detent thrown into engagement with said bar by the movement of said bar, a pawl locking said detent and actuated by a further movement of said bar, electrically-actuated mechanism for releasing said pawl, and means for holdingsaid bar against a reverse movement untilthe electrically-actuated mechanism has ceased to be energized, substantiallyas and for the pur-' poses set forth.

9. In combination with a mechanical interlocker, a baractuating the same, a detent for holding saidlbar against final movement, mechanical means for locking said detect, a magnet, an armature and rod for unlocking said detcnt, and a second magnet in series with said first magnet acting upon said armature in the event of improper energizing of said first-mentioned magnet to prevent the movement of'said armature, substantially as and for the purposes set-forth.

10. In a railway switching and signaling system, in combination with a battery and a mechanical intcrlocker, a bar actuating said mechanical interlocker, a detent for holding said bar against final movement, a lug on said detent, and a projection on said bar for engagement with said lug to replace said detent,.an electric switch, a motor, mechanism for actuating saidswitch, a circuit including said motor and said battery, a pole-changing electric switch, a magnet for unlocking said detent, acircuit including said motorand said magnet for energizing said' magnet to cause he unlocking of said detent, substantially as ,nd for the purposes set forth.

11.. In a railway switching and signaling ystem, in combination with a battery and a mechanical interlocker, of abar actuating said nechanical interlocker, a detent for holding aid b'ar against final movement, an electric witch, a motor, mechanism for actuating said witch, a circuit including said motor and said )attery, a pole-changing electric switch, a

magnet forunlocking said detent, a circuit ncluding said motor and said magnet for enrgizing said magnet to cause the unlocking f said detent, and a tongue actuated by said magnet and a notch in said bar to receive said ongue'and hold said bar against a reverse movement while .saidimagnet is energized, ubstantially as and for the purposes set forth.

12. In a railway switching and signaling ap- )aratus, a mechanical interlocker governing he action of'the switch-lever and the signal: ever, an electric switch, a switch-bar actuatng said mechanical inter-locker and said witch, and a track-switch operating circuit 13. In a railway switching and signalingap- )aratus, in. combination with a mechanical inlerlocker, an electric switch, a circuit includ mg a battery, a track-switch-operatingmo- .or and motor mechanism for actuating said rack-switch, a bar actuating said mechanical nterlocker and said electric switch, a detent governing said bar, means for locking said letent operated by the movement of said .bar, ind mechanism for unlocking said detent con- ;is'ting of a circuit, a pole-changing switch ind a magnet, said circuit including'said mag iet and said track-switch-operating motor, laid magnet being energized to unlock said letent by said motor acting as a generator af- ,er the pole-changing switch is thrown, sub- ;tantially as and for the purposes set forth.

14. A railway switching and signaling apparatus consistin g of a mechanical interlocker,

t battery, a track-switell-operating motor, a

:ircuit including said battery and said motor,

an electric switch for closing saidcircuit,- a

' bar actuating said mechanical interlocker and said electric switch, a detent for holding said bar against final movement, -means for locking saiddetent, electrically-operated means for unlocking said detent consisting of an indication clrcu t, a magnet, a pole-changing switch for closing said 'magnetin said indicat1on-c1rcu1t with said motor; and a signal mechanism comprising a signal, a signal-opcrating motor, a circuit including said signaloperatmg motor and said battery, a switch for closing. the same, a bar for actuating said a switch and said interlocker, a detent for holding said bar against final movement, mechanical means for locking saiddetent, and elec- I trically-operated means for unlocking said detent consisting of a magnet, a switch and said signal-operating motor and indication-circuit including the same, substantially as and for the purposes setforth,

15. A railway switching and signaling apparatus, consisting of a mechanical interlocker, a battery, 2, trakzk-switch-operating motor,v a

circuit including said battery and said motor,

an electric switch for closing said circuit, a bar actuating said interlocker and said else-- trio switch, 'a detent for; holding said bar against final movement, means for locking said detent, electrically-operated. means for unlocking said detent consisting ofan indication-circuit, a magnet, a pole-changing switch for closing said magnet in said indication-circuit with said motor; and a plurality'of signals and signal-operating circuits, each including the signal-operating motor, a switch, a shunt-circuit and a magnet for holding thesignal at safety, and having separate circuits including said motor, said switch, said magnet and said battery, and a corresponding plurality of selector-magnets for throwing their respective signals; and indication-circuits and magnets energized by said signal-motor, a plurality of bars actuating said interlocking mechanism and the switch belonging to its respective circuit, detents for holding said. bars against final movement, mechanical means for locking said detents, and means for unlocking said detents when their respective magnets are energized substantially as and for 'the purposes set forth.

In witness whereof I have hereunto set my hand in the presence of two witnesses.

JOHN 1). TAYLOR,

Witnesses:

M. E. SNrDER, E. O. Risomvmi'v

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