US1780520A

US1780520A - Railroad-crossing gate and train stop

Info

Publication number: US1780520A
Application number: US405611A
Authority: US
Inventors: Fischer Paul
Original assignee: Individual
Current assignee: Individual
Priority date: 1929-11-08
Filing date: 1929-11-08
Publication date: 1930-11-04
Anticipated expiration: 1947-11-04

Description

Nay. 4,1930. P. "FISCHER RAILROAD CROSSING GATE AND TRAIN STGP Filed Nov. 8, 1929 2 Sheets-Sheet l INVENTOR Bnflcher BYI-flsj 2 E AfioRNEY Nov. 4, 1930. P. FISCHER RAILROAD CROSSING GATE AND TRAIN STOP Filed Nov. 8, 1929 2 Sheets-Sheet 2 -kmw r a a m w Bu/ n w B .QN .Q

Another object of the invention is to pro- PAUL FZSOI-TER, OF NEW 1 633, I T. Y.

RAILRGAD-CRGQSZNG G. A3915 TRAIN STOE Application filed November 3, 19:29. eiicl No. 495,611.

The main object of this invention is to provide a barrier for locations such as street crossings intersected by a railroad line and has for its purpose to present a mechanism a in the form of a barrier or gate which spans is a cron of Figure 3.

5 is a crcs sectional view taken on 5 o" i igure o.

front elevational view oi the across the rails of the railroad durin the sed-t r locking the barriers in positime that the street crossing is clear. Durtion over the street crossing. mg this time the barriers or gates form an obr igure 7 is a front elevational view showstruction to the passage of the trains of the railroad, and upon the arrival of a train at a predetermined position distant from the crossing, a shoe upon the train trips the mechanism, rotates the bars or gates an arcuate distance of 90 degrees from an obstructive position to a passing position so that with this movement the train right-or"way becomes clear while the street crossing becomes obstructed and closed with a sweeping movement or" the barriers.

ing the interlocking ends oi the barrier gates.

Referring in detail to the drawing, the numerals l0 and 11 indicat parallel traction rails of a railroad system. These rails are usually supported upon a ballast bed and rest upon ties 12. On both sides of an intersecting street crossing which passes over the tracks, standards 13, l, and 16 are mounted in a cement or other suitable bed. One pair of standards, 13 and l i. are mounted on one side of the street intersection while the

remaining standards

15 and 16 are mounted directly opposite. From the upper ends of these standards diagonally strung

wires

17 and 18 are mounted. At the intersection of these wires 21- signal lamp 19 is sr pended. This signal lamp is provided with five outlets, one on each side and one at the bottom. Bounding these outlets are conical reflectors for th purpose of concentrating the rays of the signzn lamp located in member A. pair of

barrier gates

21 and 22 are adapted to swing from a position at right angles to the line of the traction rails 10 and 11 to a. position directy across the street intersection 20.

An operat ng post 23 is mounted side of the Stltdil while the pposite vide a barrier opening and closing mechanism for street crossings in which the barriers rotate an arcuate distance of 90 degrees from an obstructive position across the railroad tracks to an obstructive position across the street intersection. The mechanism is tripped by a inen'iber of the passing train 1nd such means are provided that in the rent that an immovable obstruction remains in front of the barriers. the pilot of the train has it broughtto his attention through means of an automatic, visible sig nal actuated by the mechanism at a sufiicient distanc from the crossing to enable the pilot to bring the train to a complete stop before arriving at the crossing.

on one side oi k 1 10 i 1 .L I. 7 The above and other ob ects will become b f P051 r apparent in the description below in which Olhl 1 Post compllses a members i'ilitli are rotatable about 25.

Located distant from the street inter-sea tion in the direction in which the train anproaches the street intersection a bracket 26 is mounted on a bed in the soil. This brac ct has one end of a truss lever pivotallv con nected thereto. The truss lever norin all is locked in inclined position with its free end uppermost. The free end of said lever has a rack bar 28 suspended therefrom which rides upon a suitable support and the teeth of the characters of reference refer to like named arts in the drawing.

Referring briefly to the drawing. Figure 1 is a side elevational view illustrating the barrier gates in broken lines across an intersection and also shows the co-operating mechanism for operating these barriers.

Figure 2 is a top plan view of Figure 1.

Figure 3 is a longitudinal sectional elevational view through the barrier rotating 5" mechanism.

together with a drum 30.

1S secured to the drum and wound thereon stationary post 14.

rack 28 are adapted to engage the teeth of a pinion 29 which is mounted rigidly on a shaft A flexible cable 31 and extends to a sheave wheel 32. Above this sheave wheel 32 a second grooved sheave wheel 33 is formed. These

sheave wheels

32 and 33 are formed integral with a sleeve 35 which is mounted upon an internally located second sleeve 34, the latter fitting snugly in the bore of the sleeve 35. The external sleeve 35 is provided with aratchet wheel 36 at its upper one, around whose entire periphery teeth 3. are formed. This external sleeve is mounted within an independently rotatable pair of barrel members, 38 and 39, whose opposite ends have flanges and ll formed thereon. The mutually adjacent ends or" the barrels 38 and 39 are formed integrally with disc members 51 and 52, the latter being mutually spaced apart from each other in order to receive therebetween the ratchet wheel 36 and a pair ofpawls 45, said pawls being arranged diametrically opposite and anchoring on studs 53. The studs are secured by means of nuts to both of the discs 51 and 52. The free ends of the pawls are toothet and are retained in co-operating engagement with the teeth 37 of the ratchet wheel through the medium of resilient fingers 46.

The

flanges

40 and 41 have arranged, adj cent one of their faces, cam sectors 42 and 43.

The cam sectors have receding curved noses 5e and are permanently mounted in place upon a bracket which is retained stationary by virtue of being mounted upon the The receding noses 5a of the cam sectors urge the free ends of hook levers 4:4 to rise and fall into engagement with the barrier gate 21 and the lower equivalent member, indicated by the numeral 56. The hook levers 4A are operable and swing in arcuate channels .6 and are adapted to be retracted normally out of engagement with the

barrier gates

21 and 56 by resilient springs 48. A weight is is attached to the end of a cable 50. This weight hangs suspended from a portion of the length of said cable and said portion is trained about a pulley 57 mounted on a bracket 58 which is secured in place near the upper end of the post 14, as indicated in Fig. l. The continuing -ength or the cable 50 after assing around the pulley 57 passes a quarter turn around a pulley 59 mounted on a bracket 60 near the lower end of the post 14. Thence the cable passes around the sheave wheel 33 to which it is attached. The cable '50 attached to the sheave wheel 33 enters upon the latt r sheave wheel at a point diametrically opposite thatdn which the cable 31 attaches to the sheave wheel 32. V

r The sleeve 34 lies the entire length of the shaft 25 and near its upper end is received in the bore of the barrel38. Tn this position it is secured to the barrel 38 and is adapted to extends to-and is trained rotate therewith. The lower end of the sleeve 34 has a sprocket wheel 61 attached thereto,

said sprocket wheel decreasing friction to a '68 the latter bein ri 'idl mounted upon 7 D 2: .L

the lower end of the post 2%.

In the middle of the street which intersects the 'ailroad the crossing and adjacent the tracks a pedestal 67 is mounted. This pedestal is adapted to limit the course of the barrier,

gates

21, 22, and 56 and 68. The barrier gates will be arranged adjacent this pedestal when they assume a position across the street. This pedestal is provided with a bracket 69 upon which a solenoid '70 is seated. The solenoid is provided with a movable stein Tl projected by a spring 72. The entreniity of said stem is provided with an ea to which one end of a pivotal link 7a is attached. The opposite end o1 said link 18' secured to one end of a lever which is fulcrumed intermediate its length on pin 76 in the pedestal. The end of the lever opposite to the link is provided with a hook 7'7, or ofi'set extension, which has a cam nose T8. The cam nose of this lever comes first into contact with the barrier gate and this contact trips the lever upwardly until the barrier gate has passed, after which the spring projecting stem '71 causes the lever to come into locking engagement with the barrier gates of the mechanism.

This solenoid is electrically actuated by a trip lever 79 which is mounted adjacent the track on a block 80, at a predetermined position distant from the crossing on the emer ing end of the crossing.

The flash box 19 is adapted to continually throw a red light in the direction of the oncoming train and this light turns to green as soon as the barrier gates close the pathway through the street across the traction rails.

in the upper end of the box 23 in which the barrier gate actuating mechanism 1s located a plurality of electric bus bars 81 and 82 are arranged in stationary position by being.

mounted on the spindle 25. Theupper end of the sleeve 3a is hollowed out to form a housing equipped with an insulator rim 83 upon whose surface a moving finger 84 is mounted. Access to the interior of the upper end or" member 34 is had after removal 0T a threaded cap 85. The finger 84: moves with the barrier gates, and upon closure or opening of the same, contact between these two members is had, thus closin a circuit to member 19, energizing the filament lamps contained therein.

The bracket 58 extends beyond the pulley 1,7eo,seo

i and the extremity thereof is provided with econl pulley 86. Suspended from this ey on a cable 87 is a weight 88 somewhat ghter than the weight 49. The cable 87 trained about the pulley 86, as previously stated. 7 The cable. 87 branches intermediate its length into two lines. One of these lines 86 passes around a pulley S9 and is .ecured to the lower barrier gate member 56. The OPPOSHG branched portion 90 of the cable is secured to the upper barrier gate 21.

Th mechanism illustrated herein is for the purpose of actuating arrier gates to swing from position across one or more rails of a railroad system to a position where one or more be "ier gates span across a street or highway intersecting the railroad tracks.

I am well aware that railroad stop gates have heretofore been patented, but those that I am familiar with do swing across the railroad and street intersection, instead passing from a vertical to a horizontal posi tion. With this type of device obstacles or obstructions may remain in the path of the railroad carrier without signalling this to the pilot of the carrier. The rolling stock or l train passing over rails 10 and 11 is equipped with a semi-circular shoe 91 mounted in such location that it will abut and ide upon the upper inclined surface of the truss lever 27. As the shoe passes over this truss lever the latter is angularly depressed causing a linear movement of the rack bar 28. The truss lever remains depressed for a period of time, which will be hereinafter noted, said rack bar by engaging the pinion 29 rotates the latter, and being rigid with the drum carries the latter with it. Rotation of the drum rotates the sheave wheel 32 which pays out the cable 31 and rotates the ratchet wheel in a counter clock-wise direction, when viewing Figure 4 of the drawings.

The pawls trip over the teeth of the ratchet and form an escapement therein. Simul eously with the roation of the ratchet and tripping of the pa\ is the weight 49 is lifted through the medium of the take-up of the cable 50, upon the remaining sheavewheel 33. This cable is trained about the sheave wheel in such manner that when the weight 49 exerts its influence upon the mechanism the ratchet wheel 36 and all parts rigid or coupled thereto will with the influence of the lowering of the weight rotate in a clockwise direction, when. viewing Figure 4 of the drawings.

The ratchet wheel in rotating in a clock wise direction as viewed in Figure 4, engages the free ends of the pawls 45; these pawls 45 bein mounted between the discs 38 and 39 through the medium of the studs 53, which couple said disc members and barrels 38 and 39 to each other, will rotate said barrels in a. clock-wise direction, swinging therewith the

barrier gates

21 and 56. These barrier gates are normally in a position across the tracks 10 and 11 of the railroad system and are rotated by means of the hooked levers 44 of the .levice. is the barrels 38 and 39 begin to roin a clock-wise direction the surfaces of he levers ride upwardly upon the cam noses 54 of each of the sectors 42 and 43. This function raises the hooked free ends of the lovers 44 to a projecting position above the flange 41 and below the flange 40 so that said hook levers are in engageable position and w upon further rotation assume an abutt g position adjacent the

barrier gate members

21 and 56, and at this instant become active. These hook levers 44 upon being rotated over the cam sectors 42 and 43 will carry with them the

barrier gates

21 and 56, as previously stated, and will swing these latter members an arcuate distance of 90 degrees or a quarter turn to the post where this set of gates will be arranged in obstructing carrier position over one-half of the highway.

As the free ends of the upper barrier gate member 21 arrive at the end of the swing, the hook 7'7 is lifted by the movement of the barrier gate 21 upon the cam surface 78 of the lever 75. This lever 75 is normally urged into en aging position with the barrier gates by the spring 72 mounted upon the solenoid 70. The opposite pair of barrier gates 22 and 68 are moved or actuated in unison with the

gates

21 and 56 through the medium of the chain 63, which is trained about the 'ocket wheel 61 in the housing of the post 25 and the sprocket wheel 64 arranged on counter shaft adjacent the post 24.

illlS sprocket wheel 64, as previously stated, is provided with a pinion 65 rigidly secured thereto, which meshes with a gear 66 integral with the rotating portion of the post 24. Through this construction both

posts

24 and 24 are actuated in unison in such manner that the free ends of the barrier gates swing toward each other. After the shoe 91 of the train has passed over the inter-section of the highway with the railroad system it rides over member 79 and closes a circuit through the solenoid 70 whose stem '21 is then retracted, in this manner lifting the free ends of the lever to the position shown in broken lines in Figure 6, after which the barrier gates are in released position. These barrier gates when so released will again be swung to their original position, as shown by the

numerals

21 and 22 in Figure 2. This movement is accomplished by the weight 88 suspended upon a cable 87 whose branched ends 90 and 88 are connected to the barrier gates 21 and 5G and the hooked levers 44 being at this instant release-d from engagement with the barrier gates, the weight will return said barrier gates to their normal position, as previously stated.

It is to be noted that certain changes in form and construction may be made without departing from the spirit and scope of the invention.

' I claim:

l. In a railroad crossing barrier a hollow P0511, rigid shaft receiving said hollow post, a sheave wheel mounted revolvably on said shaft, said sheave wheel being movable 1ndependently of hollow post, a cable trained about said sheave wheel, a weight suspended from said cable, a sleeve mounted loosely on said shaft, a ratchet wheel rigid with said sleeve and said sheave wheel and means remote from said hollow post for rotating said ratchet wheel in one direction and lifting said weightwhen taking up saidcable on said sheave Wheel for rotating said post. i

2. In a railroad crossing barrier a hollow post, a rigid shaft receiving said hollow post, a sheave wheel mounted revolvably on said shaft, said sheave wheel being movable independently of hollow post, a cable trained about said sheave wheel, a weight suspended from said cable, a sleeve mounted loosely on said shaft, a ratchet wheel rigid with said sleeve and said-sheave wheel, barrier gates extending; from said post, freely rotatable members revolvably on said shafts in said sleeve, having said barrier gates secured thereto, barrels rigid with each other, rotatable on said sleeve, means mounted on said barrels engagingsaid ratchet wheel when said weight is in lifted position, said weight when lifted being adapted to rotate said gates from an intersecting position across said tracks to a position across a hi hway, and means remote from said post for lifting said weight.

3. In a railroad crossing barrier a rigid shaft, a sleeve independently rotatable thereon, a second sleeve within the first-named sleeve, barrier gates extending from said second-named sleeve, a sheave wheel on said first-named sleeve, a ratchet wheel on said first-named sleeve, pair of barrels receiving said first-named sleeve and second-named sleeve, a cable trained about said sheave wheel, a weight suspended from said cable,

'means remote from said shaft for rotating said sheave wheel to lift said weight and means mounted on said barrel engaging said ratchet wheel when said weight has been lifted, said weight being adapted to rotate said ratchet wheel in a reverse direction.

{L In a railroad crossing barrier a rigid shaft, a sleeve independently rotatable thereon, a second sleeve within the first-named sleeve, barrier gates extending from said second-named sleeve, a sheave wheel on said first-named sleeve, a ratchet wheel on said first-named sleeve, apair of barrels receiving said first-named sleeve and second-named sleeve, a cable trained about said sheave wheel, a weight suspended from said cable,

a companion sheave wheel on said first-named sleeve, a cable trained about said companion sleeve, a cable trained about said she ve wheel, a weight suspended from said cable, a companion sheave wheel on said firstaiamed sleeve, a cable trained about said companion sheave wheel, a normally inclined truss lever and means operated by the swing of said truss lever for taking up said cable trained about said comps,

ion sheave wheel upon engagement'with passing member one train.

6. in a railr -l crossing barrier a rigid shaft, sleeve independently rotatable thereon, a second sleeve within the first-named sleeve, barrier gates extending from said second-named sleeve, a sheave wheel on said lirst-nained sleeve, a ratchet wheel on said first-named sleeve, a pair of barrels receiving said first-named sleeve and second-named sleeve, a cable trainedabout said sheave wheel, a weight suspended from said cable, a companion sheave 7 wheel on said first-named sleeve, a cable trained about said companion sheave wheel, a normally inclined truss lever, a rackbar mounted on the one end of said inclined truss lever, a pinion meshed with said rack bar, and a drum rigid with said pinion, said drum having the cable connected to said companion sheave wheel trained thereabout, said truss lever when actuated being adapted to lift the weight and rotate said ratchet wheel.

7 ln a railroad crossing barrier a rigid shaft, a sleeve independently rotatable thereon, a second sleeve within the first-named sleeve, barrier gates extending from said second-named sleeve, a sheave wheel on said first-named sleeve, a ratchet wheel on said first-named sleeve, a pair of barrels receiving said first-named sleeve and second-named sleeve, a cable trained about said sheave wheel, a weightsuspended from said cable, a companion sheave wheel on said first-named sleeve, a cable trained about said companion sheave wheel, a normally inclined truss lever, a, rack bar mounted on one end of said inclined truss lever, a pinion meshed with said rack bar, a drum rigid with said pinion, said drum having the cable connected to said companion sheave wheel trained thereabout, said truss lever when actuated bein adapted to lift the weight and rotate said ratchet wheel, pawls mounted on said barrels, said pawls being adapted to engage the ratchet wheel and rotate said ratchet wheel and sleeve in a sleeve, a

reverse direction when said weight is being lowered, and means on said barrels engaging said barrier gate members when said barrel members are rotated.

8. In a railroad crossing barrier a rigid shatt, sleeve independently rotatable thereon, a second sleeve within the first-named sleeve. barrier gates extending from said second-namec sleeve, a sheave wheel on said first-named sleeve, a ratchet wheel on said firstamed sleeve, a pair of ba rels receiving said first-named sleeve and second-nan1ed sleeve, a cable trained about said sheave wheel, a weight suspended from said cable, a companion sheave wheel on said first-named sleeve, cable trained about said companion sheave iv eel, a normally inclined truss lever, a rack bar mounted on one end of said inclined truss lever, pinion meshed with said rack bar. a drum rigid with said pinion, said drmn having the cable connected to said coiniani-on sheave wheel trained thereabout, said t lever when actuated being adapted to l t the weight and rotate said ratchet wheel,

pawis mounted on said barrels, said. pawls being adapted to engage theratchet wheel and rotate said ratchet wheel and sleeve in a reverse direction when said weight is being lowered, flanges on said barrel members havin arcuat-e slots therein, hool ed levers normally imb-edded in said slots when said barier gates are in a position across said tracks, nil means adjacent said barrels for lifting aid hooked levers into engagement with the arrier g ,tes when said barrels are rotated by e 11.11 of said weight.

9. In a railroad crossing barrier a rigid shaft, a sleeve independently rotatable thereon, a second sleeve within the first-named sleeve, barrier gates extending from said end-named sleeve, a sheave wheel on said first-named sleeve, a ratchet wheel on said ii -named sleeve, a pair of barrels receiving d first namec sleeve and second-named cable trained about said sheave wheel, a weight suspended from said cable. a

sleeve, a ca le trained about said companion sheave whee a normally inclined truss lever, a rack bar mounted on one end or" said inclined truss lever, a pinion meshed with said rack bar, a drum rigid with said pinion, said drum having the cable connected to said companion sheave wheel trained thereabout, truss lever when actuated being adapt-ed t the weight and rotate said ratchet pawls mounted on said barrels, said being adapted to engage the ratchet *hee and rotate said ratchet wheel and sleeve in a reverse direction when said weight is being lowered, flanges on said barrel members having arcuate slots therein, hooked levers normally imbedded in said slots When said barrier gates are in a position across said tracks, said hooked levers normally projecting out of said slot on one side when said hooked levers are disengaged free from said barrier gates, and stationary means ad]acent said barrels for engaging the projecting portions of said hooked levers to lift the free ends of said hooked levers into engaging position with the barrier g tes of the device.

10. in a railroad crossing barrier a rigid shaft, a sleeve independently rotatable thereon, a second sleeve within the first-named sleeve, barrier gates extending from said second-named sleeve, a sheave wneel on said first-named sleeve, a ratchet wheel on said first-named sleeve, a pair of barrels receiving said firstnamec sleeve and second-named sleeve, a cable tr ined about said sheave wheel, a weight suspended from said cable, a companion sheave wheel on said first-named sleeve, a cable trained about said companion sheave wheel, a normally inclined truss lever, a rack bar mounted on one end of said inclined truss lever, a pinion meshed with said rack bar, a drum r1 id with said pinion, said drum having the cable connect d t said companion sheave wheel trained thereabout, said truss lever when actuated being adapted to lift the weight and rotate said ratchet wheel, pawls mounted on said barrels, said pawls being adapted to engage the ratchet wheel and rotate said ratchet wheel and sleeve in a reverse direction when said weight is being lowered, flanges on. said barrel members having arcuate slots therein, hooked levers normally imbedded in said slots when said barrier gates are in position across said tracks, said hooked levers normally projecting out of said slot on one side when said hooked levers are disengaged from said barrier gates, a curved cam member mounted in stationary position beneath said flanges, said cam member being adapted to have said projecting portion of said hooked lever ride thereupon and r ise the free end of said hooked lever into engaging position with the barrier gates, and electric means remotely operated for engaging said barrier gates when spanned across the highway for securing said barrier gates in located position 11. In a railroad crossing barrier a rigid shaft, a sleeve independently rotatable ther on, a second sleeve within the first-named .aeeve, ha rrier gates extending rom secendamed sleeve, shes e wheel on said first-named sleeve. a ratchet wheel on said firstnanied sleeve, a pair of barrels receiving said first-named sl eve and second-named sleeve, 21 cable trained about said sheave wheel, a weight suspended troni said cable, a companion sheave wheel on said first-named sleeve, a cable trained about said companion sheave wheel, a normally inclined truss lever, a rack bar mounted on one end of said inclined truss lever, a pinion meshed with said rack bar, a drum rigid with said pinion, said drum having the cable connected to said companion sheave wheel trained thereabout, said truss lever when actuated being adapted to lift the weight and rotate said ratchet wheel,

' tracks, said hooked levers normally projecting out of said slot on one side when said hooked levers are disengaged from said barrier gates, a curved cam member mounted in V stationary position beneath said flanges, said cam member being adapted to have said projectmg portion of said hooked lever ride thereupon and raise the free end of said hooked lever into engaging position with the barrier gates, a lever, a hook on said lever adapted'to engage said barrier gates when swung across a highway, and means on said lever for tripping said lever upon passage 01". said barrier gates.

12. In a railroad crossing barrier a rigid shaft, asleeve independently rotatable thereon, a. second sleeve within the first-named sleeve, barrier gates extending from said second-named sleeve, a sheave wheel on said first-named sleeve, a ratchet wheel on said first-named sleeve, a pair of barrels receiving said first-named sleeve and second-named sleeve, a cable trained about said sheave wheel, a weight suspended from said cable, a companion sheave wheel on said firstnamed sleeve, a cable trained about said com- I panion sheave wheel, a normally inclined truss lever, a'rack bar mounted on one end of said inclined truss lever,a pinion meshed with said rack bar, a drum rigid with said pinion, said drum having the cable connected to said companion sheave wheel trained thereabout, said truss lever when actuated being adapted to lift the weight and rotate said ratchet wheel, pawls mounted on said barrels, said pawls being adapted to engage the ratchet wheel and rotate said ratchet wheel and sleeve in a reverse direction when said weight is being lowered, flanges on said barrel members having arcuate slots therein. hooked levers, normally imbedded in said slotswhen said barrier gates are in position across said tracks, said hooked levers norwhen swung across a highway, and a cam named sleeve, barrier gates extending from said second-named sleeve, a sheave wheel on" said first-named sleeve, a ratchet wheel on said first-named sleeve, a pair of barrels receiving said first-named sleeve and secondnamed sleeve, a cable trained about said sheave wheel, a weight suspended from said cable, a companion sheave wheel on said first-named sleeve, a cable trained about said companion sheave wheel, a normally inclined truss lever, a rack bar mounted on one end of said inclined truss lever, a pinion meshed with said rack bar, a drum rigid with said pinion, said drum having the cable connected to said companion sheave wheel trained thereabout, said truss lever when actuated being adapted to lift the weight and rotate said ratchet wheel, pawls mountedon said barnose on said lever,1s'aid cam nose being adapted to ride over said gates and trip said lever,

rels, said pawls being adapted to engage the V ratchet wheel and rotate said ratchet wheel and sleeve in a reverse direction when said weight isbeing lowered, flanges on said barrel members having arcuate slots therein, hooked'levers normally imbedded in said slots when said barrier gates are in position across said tracks, said hooked levers normally projecting out of said slot on one side when said hooked levers are disengaged from said barrier gates, a curved cam member mounted in stationary position beneath the flanges, said canrmemberbeing adapted to have said projecting portion of said hooked.

' lever ride thereupon and raise the free end I of said hooked lever into'engaging position with the barrier gates, a lever, a hook on said lever adapted'to engage said barrier gatesv when swung across a highway, a cam nose on said lever, said cam nose being adapted to ride over said gates and trip said lever when securing said barrier gates and said trip lever when securing said barrier gates in spanning a portion of a highway, and visual means operated by rotation of said post for indicating the position of the gates to the personnel of an approaching train.

Intestimony whereof I afiix my signature. 7

PAUL FISCHER.