US1419856A - Railroad gate - Google Patents

Description

y |220. RAILROAD GATE.

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RAILROAD GATE.

Specification of Letters ,Patent Patentd June 1S, 1922.

Application filed August 23, 1921. Serial No. 494,731.

T0 @ZZ fr0/wm t may concern: f

Be it known that I, BoNAvnNTURo Izzo, a citizen of the Kingdom of Italy, residing at Paterson, in the county of Passaic and State of New Jersey, have invented new and useful Improvements in Railroad Gates, of which the following is a specification.

This invention relates to a railway crossing gate, the general object of the invention being to provide means for operating the gate by the train so that the gate will be closed by the train approaching the crossing and will be opened by the train when leaving the crossing.

Another object of the invention is to provide means for sounding an alarm in the cab of the engine when the train approaches a crossing.

This invention also consists in certain other features of construction and in ,the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

In describing my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in-whichr-v Figure 1 is a view of'a part of a railroad track and a crossing showing the application of the invention.

Figure 2 is an enlarged sectional view through a part of the gate and the operating means.

Figure 3 is an enlarged detail view. l

Figure 4 is a view of the part carried by the train.

Figure 5 is a sectional view through this art. p Figure 6 is a sectional detail view of part of the gate.

Figure 7 is a diagrammatic view of the alarm means.

In Figure 1, A indicates the railroad track and B the crossing. C indicates a portion of an engine on the track and D indicates the two gates for controlling the crossing. In carrying out my invention I locate a housingl adjacent the track an appreciable distance from the crossing which carries a vertically arranged shaft 2 which passes through the top of the casing. The outer end of this shaft has secured thereto a vertically arranged roller 3 which is adapted gates D.

`to be engaged by a member 4 on the train. The lower end of the shaft 2 carries a bev- 10 so that the rotary movement of the wheel will cause the piston to reciprocate in the cylinder. `A rod 11 isconnected with the front end of the piston and passes through the outer end of the cylinder. A coil spring 12 is located on this rod 11 and has one end bearing against a vstop 13 on the rod and its innery end bearing` against lugs 14 projecting into the cylinder so that this spring will tend to hold the piston in its outer position.

A housing 1 is placed adjacent the track on the opposite side of the crossing from housing 1 and this housing 1 has associated therewith an arrangement of parts similar to that of thehousing 1. The rods 11 and 11 of the pistons have their outer ends connected with the cables 14 and 14 which pass over the guiding roller 15 and through the tubes 16 into the housing 17 of one of the A pulley 18 is connected with the gate and straps 19 each have one end secured to the pulley and the other end connected with a cable. These parts are so arranged that when a pull is exerted upon one cable the pulley will be rotated in one direction by the strap which is connected with this cable so that the opposite strap will be wound upon the pulley. A weight 20 is connected with the gate for insuring its remaining in opened and closed position. The two gates are operatively connected together so th at the movement of one gate is transmitted to the other.

It will thus be seen that when a train approaches the crossing the party 4 thereon will strike the roller 3 so as to cause the same to rotate and thus revolve wheel 6 to cause the rod 10 to retract the piston 9 so as to pull upon the cable 14 and rotate the pulley 18 by means of the strap 19. This action will lower the gate, as shown in full lines in Figure 2. After the train passes the spring 12 will return the parts associated with the housing to normal position and thus slack the cable 14, the gates remaining closed due to gravity. Thus the gates are automatically closed at the approach of the train and after the train passes the crossing the part 4 Will strike the roller 8 of the other'housing so as to retract the piston 9 and thus pullupon the cable 14 to revolve the pulley 18 back to its normal position with the gates in open position. After part 4 on the train leaves the roller 8 the spring 12 Will return the parts to normal position With cable 14 slack, ready for the next train to operate the parts in front ofthe crossing to lower the gates. l

I also provide means for warning the engineer that he is approaching a crossing. Such means are associated With the part 4 which is ot substantially elliptical shape, as shown in Figure 4, and is formed ot spring metal so that the curved part 4 Will be contracted when engaged by the roller and thisA contraction movement will force inwardly the spring plunger 21 so as to cause the same to strike the switch operating part 27 and close the switch 28 of the circuit 29 which includes the alarm 30 so as to sound said alarm, thus notifying the engineer that he is ap} oroaching a crossing. Part 4 is provided with a flange 4 for bolting the part to a part on the engine. p

It is thought from the foregoing description that the advantages and novel features oil my invention will be readily apparent.

I desire it to be understood that I may make changes in the construction and in the combination and arrangement of the several parts, provided that such changes fall Within the lscope of the appended claims.

What I claim is l. In combinationnwith a railroad crossing gate, a rotatable member placed adjacent the track, one on each side of the crossing, means on the train for engaging said members to rotate the same, means for converting the motion into a reciprocating motion, means ior lowering the gate by such means When the first member is engaged by the train and 'lor raising the gate when the second member is engaged by the train and signal ,means each housing and geared to the shaft, a cylinder connected with each housing, a piston in each cylinder, a piston rod connecting each piston with the Wheel so that therotary movement of the Wheel Will reciprocate the piston` a rod connected with' the piston and extending through the outer end of each ,cylinder,y spring means for normally holding the pistons in their outer positions, a drum on the gate and flexible means for connecting the outer ends of the last mentioned rod With said drum. Y f

3. In combination Witha railroad gate, means along the track Yfor actuating the same, a part on the train tor engaging such means to operate the same, such means including a contractible part, a spring lplunger connected with said contractible part and a circuit including a switch closed by the plunger when the part is contracted and a signal connected with the circuit.

In testimony whereof I affix my signature.

BONAVENTURO IZZO.

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