US1247537A - Railroad-crossing. - Google Patents

Description

C. W. JACKSON.

RAILROAD CROSSING.

APPLICATION FILED FEB. 2. 19!].

2 SHEETS-SHEETY I.

0. W. JACKSON.

RAILROAD CROSSING.

APPLICATION FILED FEB. 2. 1917- Patented Nov. 20, 191?.

2 SHEETS-SHEET 2- UWZUhakwm,

GHLES W. JACKSON, OF LEAVENWORTH, KANSAS.

LROAD-CROSSING'.

specification of Letters Patent.

Application filed February 2, 1317. Serial No. 146,177.

To all whom it may concern."

Be it known that 1, CHARLES W. JACKSON, a citizen of the United States, residing at Leavenworth, in the county of Leavenworth and State of Kansas, have invented certain new and useful Improvements in Railroad- Crossings; and I do hereby declare the following to be a full, clear, and exact descrlption of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in railroad crossings of the type which employ movable tread blocks for closing the gaps between adjacent rail sections, so as to provide continuous treads on the rails of the track upon'which a car is traveling, and an object of the invention 'is to provide simple, durable and efficient mechanism having operative connection with the blocks and adapted to be operated by a car when the same approaches a crossing, so as to move the blocks to operative position.

Other objects will appear andbe better understood from that embodiment of the invention of which the following is a specification, reference being had to the accompanying drawings forming a part thereof, in which:

Figure 1 is a top plan view of a railroad crossing equipped with movable tread blocks and the tread block operating mechanism constructed in accordance with my invention,

Fig. 2 is a section taken .on the line 2-2 of Fig. 1,

Fig. 3 is a perspective view of one of the connecting elementsfor the rods of two of thetread blocks,

Fig. 4 is a detail perspective vlew of a section of a rail, showing one of the trips for operating the block operating mechanism associated therewith, I

Fig. 5 is transverse sectional view taken through one of the connecting heads for two of the arms of two of the tread blocks, and showing the manner of connecting the arms to the head,

Fig. 6 is a perspective view of one of the sides of the frame included in the operatm mechanism, and

Fig. 7 is a detail side view of one .of the track sections, showing a guide mounted thereon through which operates one of the rods that operate the frame.

Referring to the drawings 1n detail, the

letters A and B designate a pair of intersectlng tracks, the rails of the respective tracks having spaces or gaps at their points of intersection. Located within the spaces or gaps at the points of intersection between the ralls 0f the tracks A and B are movable tread blocks 1, which are substantially triangular shape and are adapted when moved in one direction to form continuous tread portions for the rails of the track A. and when moved in the opposite direction to form continuous tread surfaces for the rails of the track B. The blocks 1 slide upon plates 2, which underlie the points of intersectlon between the rails of the tracks A. and B.

The mechanism for eflecting movement of the blocks consists of a circular body or head 3, which is mounted on a plate 4, which plate is mounted on the upper side of a block 5, a bolt 6 extending through the head 3, plate 4 and block 5 so as to secure the parts together. Surrounding the circular body or head 3 is a frame which has the sides thereof pivotally connected to each other, each of the sides having one end cutaway to provide a tongue 7, and a pair of convex shoulders8, and the opposite end of the side is provided with a slot 9 and the terminal of the last-mentioned end of the side is cutaway to provide concaved seats 10. When the sides of the frame are assembled into frame formation the tongue 7 of one side fits within the slot 9 on the end of another side, and the convened shoulders 8 are received by the concaved seats 10. Bars or rods 11 are disposed centrally of the rails of the respective tracks A and 1B and each has one end extended beneath the adjacent rail of one of the tracks and bifurcated and engaged over the meeting ends of two of the sides of the frame. Bolts 12 extend through the bifurcated ends of the rods 11 and through the meeting ends of the sides of the frame so as to secure the rods and the sides of the frame together. The sides of the frame have their upper surfaces provided with cutout portions to provide recesses 13, which receive the outer ends of rods 14, the said outer ends of the rods 14 having eyes formed thereon and-bolts 15 extend through the eyes on the outer ends of the rods 14 and through the sides of the frame and pivotally connect the rods 14 to the sides of the frame. The inner ends of the rods 14 are received by recesses in the head 3 and are provided with Patented Nov. 2 8 191%.-

(lift eyes for the reception of pins 16, which extend through the head 3 and the eyes on the inner ends of the rods 14, so as to ivotaltlly connect the rods to the head 3. he r0 s 11 are slidably received by U-shaped brackets 17 dependlng from the under sldes of the rails of the tracks A and B, and the outer ends of the rods 11 extend through openings in triangular shaped heads 18. The heads 18, which are located between the rails of the track A, have connection with the heads 18 located between the rails of the track B by means of rods 20. The rods 20 also have suitable connection with the tread blocks 1.

The ends of the rods 20 are bifurcated, and receive the adjacent sides of the ad acent heads 18. The heads 18 are provided, adjacent those sides that are received by the bifurcated ends of the rods 20, with slots 21, and the fingers of the bifurcated ends of the rods lie on opposite sides of the slots 21 and pins 22 extend through the-fingers o the bifurcated ends of the rods 20 and are slidably received by the slots 21 in the heads 18.

I The outer ends of the rods 11 extend through openings in the heads 18 and the. outer terminals are bifurcated and receive the ends of links 23, the said links having their rear or outer ends provided with eyes that receive laterally extending arms 24 formed on horizontally disposed shafts 25, the shafts 25 being journaled in cap sleeve bearings 26 mounted on rail ties 27, or any other suitable support. The shafts 25 have those ends 0 posite the ones with the arms 2&1 thereon ormed to provide cranks 28, which engage in slots 29 formed in the lower ends of vertically disposed trip elements 30, the said elements 30 being p voted to certain adjacent rails of the tracks A and B and have their upper ends 32 extended laterally. While there is shown, in the drawings, only one set of trips 30, and the mentioned'set being associated with the track A, it will be understood that the track B will be likewise equipped with a similar set of trips, and they will be so mounted that when the trips 30 on the track A are lowered or de ressed, the trips on the track B will be raised. The trip levers on the respective tracks are so located that they will be engaged and depressed by the flange of one of the wheels of the foremost truck of the car approaching the crossing.

In Fig. 1 of the drawings, the tread blocks are shown in alinement with the rails of the track A and the trip levers 30 are shown in lowered or depressed position, it being assumed that the said trip levers on the track B, while not shown, are in raised osition. When a car moves along the trac B, for instance in the direction of the arrow B, and a preaches the crossing, the flange of one o the wheels will depress the adjacent trip, not shown, and effect forward movement of the adjacent link 23, which will result in the adjacent rod 11, head 18 and y inward movement of the adjacent ends of I the adjacent sides 13 of the frame toward the head 3 and cause those ends of the frames that have connection with the rods 11 that are connected to the heads 18 located between the rails of the track A to be moved in a plane parallelto the track A and move the adjacent rods 11 and heads 18 outward, or in a direction away from the track B. This outward movement of those rods 11 that have connection with the heads 18, located between the rails of the track A, and the adjacent connected ends of the sides 13 of the frame, will effect inwardymovement of that rod 11 in the track B located in advance of the crossing and cause the same to move the adjacent head 18 toward the track B and cause the adjacent link 23 to travel in the direction of the crossing and effect lowering of the trip located inad- Vance of the crossing, and not shown. When track A, the rods 20 will move the tread blocks l'to the ositions where they aline with the rails o the track B, so that the tread portions of the rails of the track B will be continuous at the crossing. U on movement of the tread blocks from allnement with the rails of the track A to where they will aline with the track B, the sides of the frame will be moved in that direction where' they will move those rods 11 and heads 18 that are positioned between the rails of the track A, or away from the track B, and effect rocking of the shaft 25 in that direction where they effect raising of the trips 30 on the track A from lowered to raised or operative position.

It is evident that various changes might be resorted to in the construction, form and arrangement of the several-parts without departing from the spirit and scope of the invention.

What I claim is:

1. A railway crossing i'ncludin a plurality of movable tread blocks a apted for alternate registration with the rails of the respective tracks of the crossing, heads disposed in rear of the crossing and located between the rails of the respective tracks,

heads disposed in advance of the crossing the sides of the frame so as to effect move-- ment of the heads in one track away from the crossing when the heads in the other track are moved toward the vcrossing, and rods connecting the heads to the tread blocks so as to effect movement of the tread blocks when the heads are operated, for the purpose specified.

2. A railway crossing including a plurality of movable tread blocks adapted for alternate registration with the rails of the respective tracks of the crossing, heads disposed in rear of the crossing and located between the rails of the respective tracks, heads disposed in advance of the crossing and interposed between the rails of the respective tracks, the said heads being mounted for movement toward and away from the crossing and each having a pair of slots therein, car operated shafts operatively connected to the heads, a frame located centrally of the crossing and formed of pivotally connected sides, means for connecting the heads to the sides of the frame so as to effect movement of the heads in one track away from the crossing when the heads in the other track are moved toward the crossing, and rods connected to the blocks and interposed between adjacent heads and each having the ends thereof bifurcated for receiving adjacent heads, and elements ex tending through the fingers of the bifurcated ends of the rods and through the slots in the heads for securing the rods to the heads, so as to effect movement of the tread blocks whenthe heads are operated.

In testimony whereof I afliX my signature in presence of two witnesses.

CHARLES W. JACKSON. Witnesses:

C. Woon, Gno. W. BRIGHT.

Images