US799260A - Railway-crossing. - Google Patents

Description

PATENTED SEPT. 12, 1905. R. H. PIERCE & G. D. WESTROPP.

RAILWAY CROSSING.

APPLICATION FILED JAN.11, 1905.

2 SHEETS-SHEET 1.

'- No. 799,260. PATENTED SEPT. 12, 1905.

R. H. PIERCE & G. D. WBS'I'ROPP.

RAILWAY CROSSING. APPLICATION FILED JAN.11. 1905.

2 SHEETS-SHEET 2.

Wfnessef am l Yan .vezz fors UNITFB STATES PATENT ernten.

RFIINALD HENRY PIERCE ANI) GEORGE DAVENCOURT IVESTROPP, OF AJMIR, INDIA.

RAILWAY-CROSSING.

Specification of Letters Patent.

Patented Sept. 12, 1905.

Anplicatinn filed January ll, 1905 Serial No. 240,640.

fr) (1/7/ [rh/1711, '/'i 'n1/(ty concern.'

Be it known that we, REGINALD HENRY Pi n non and Guo nen DAV uNooUR'r W lcsrnorr, British subjects,empl0yees on the Rajpootana- Malwa railway, and residents of' Ajmir, Italipootana, India, have invent-ed certain new and usef'ul Improvements in Railwavrossing's, of' which the following is a specification.

This invention relates to improvements on our previous specification regarding' railwaycrossings, the object being' to secure perfect safety and efficiency in the working of the centrally-pivoted single-rail crossing' by securely locking the pivoted rail when swiveled into either position for main or siding' line.

In the description hereunder g'iven to make it quite clear the whole invention is included with the additional improvements.

In the drawings hereto annexed, and which are to be read as part ota this specification, like letters or numerals are used to indicate the same parts in each of' the several figures.

Figure l shows a plan of improved railcrossing with main line and siding' and the locking apparatus. Fig'. 2 is a plan to enlarg'ed scale of' a portion of same, showing abutting' rails E I) and E I), bed-plate, centrally-pivoted rail,and locking-chairs attached to bed-plate. Fig'. 3 shows a vertical section o'f' Fig'. 2 tln'ough center ofI bed-plate,with actuating-ties attached to web of rail on line l 1, Fig. 2. Fig'. a is a vertical section ofl same on line Q 2, showing' an alternative method ofl attaching the actuating-ties to pivoted rail beneath bed-plate. Fig. 5 shows a longitudinal vertical section of' rail and bed-plate on line 3 3. Figs. 6 and T show a plan and section of a central pivotal bearing' for broadgag'e heavy rails. Fig's. 8, 9, IO, and l1 show plans and side elevations of' the pair of' locking-chairs marked V X fixed to bed-plate. Figs. 12, 13, I4, and I5 show plans and side elevations ofthe pair of' locking-chairs marked U IV fixed to bed-plate. Figs. 16, I7, I8, and I9 show plans and side elevations of' the pair of locking-shoes securely attached to rail and which move to and fro with it, (marked Y Z.) Fig. 2O shows a side elevation of' the actuating-levers S and I. Fig. 21 is a vertical section of same on line I a, Fig. l. Fig'. 22 shows plan of a port-ion ofl bed-plate B with two curved slots in it for rail-bolts 14. and l5 to travel in.

This improved rail-crossing consists of' a single rail A, centrally pivoted on its central pin H, attached to a substantial bed-plate B, securely fixed to wooden sleepers C and working' in conjunction with the main-line rails D and the siding-rails E and the movable points F, which are the same as have hitherto been used.

The switching-gear consists of a lever I, working on its pin J in casing K, which actuates rod L, bell-crank M, points-rod N, T O, swiveling' on its center pin I), tension-ties Q, pinned to outer ends of' links R, the inner ends of which are connected to web of pivotcd rail A in any suitable manner.

The locking-gear consists of' lever S, pinned in f'rame K, its lower end being connected to rod ai, pinned to bell-crank which swivels on its angle-pin c, fixed in sleeper C', the other end 0f' crank being pinned to tierod d, the forward end of' which connects to arm of another bell-crank c, which swivels on its angle-pin f, fixed in sleeper. The forward end of crank ff is hinged to end of' long' rod g, to which is also hinged by pins at points /1/ and zi the two arms j and which swivel on pins Z and fm, securely fixed in sleeper'. The other ends of rods and j carry the locking-bolts n and 0 with two short links p and i] intervening.

In laying' the bed-plate B, which should bc prepared in the workshop and brought to site with all its fittings on it, the ends fr a of the pair of' abutting' rails are first bolted together through blocks of wood t and fr. The ends of' bed-plate are then pushed in under the ends o'fl the rails which are riveted down to bed-platethroug'h rail-flanges. The bedplate is then secured to sleepers by spikes or preferably by coach-screws. The switch-rail points F are secured in their place in the usual manner and are connected by bara, as at present.

For a meter-gage line the bed-plate may be ten feet long` by two to two and one-half feet wide and halfl an inch thick, and it may be countersunk in the sleepers to the extent of its own thickness.

The fittings on the bed-plate are the central bearing-plate T, which has a disk cut out of it and also out of block fi', attached to center of' pivoted rail. The bearing-plate may be oblong' 0r circular and attached to bed-plate by rivets. Then there are the two pairs of' curved locking-chairs,(marked U V and I/V X,)

IOO

their concave sides facing inward to the central point. These chairs are securely riveted to bedplate. The pair V X are exactly alike, except that their curves are reversed, and the bed w of X is slightly longer than that of V. They have two jaws 5, under which the flanges of rail catch as it swings to and fro over the center part w. The pair marked U W are also exactly alike, except that their curves are reversed, and the bed o' of Uis a little longer than that of W. They are securely riveted to bed-plate B and have ltwo jaws'5 fitted on their outer ends, their inner ends being fitted each with a boxed-in-corn- `pa'rtment 6 for housing the locking-bolts n and 0.

The Vfittings attached vto -thepivoted rail ar the pair of locking-shoes Y Z, which are exactly alike with the exception of their-curves vbeing reversed. At one `end they vare fitted with a pair of jaws 8, within which the flanges of rail A are secured by screws 9, Athe inner ends ofeach shoe being fitted with a pair of slots 10 to receive the ends of locking-bolts. These locking-shoes swi-ng'with the frail and fit into and travel -in the space between each pair of chairs.

Fig. 3 shows a cross-section-of 1 l1, Fig. 2 of the central bearin-g for a light-or meter gage railway. The jaws 5 are seen in elevation. The pivot-.pin H is shown secured in the under bearing-plate 13 and passing through bedplate B into a'bore-hole'rnade in the center of foot of rail, a Ysplit pin passing through its -top to prevent rail lifting off. The -iianges of rail are securely riveted to abearing-block V, which bears on plate 13 andon which :the rail turns. In Fig. 31the `actuating-rods Q, wi'tlh links R, are shown :attached to web of rai Figs. 6 and 7 show na bearing-block for broad-gage heavy rails, in which a broader base is given to the circular bearing-block, to the top of which iis given jaws 8, in which rail-flanges are secured by screws or rivets.

Fig. 4 shows a method of attaching the rods- Q to bolts 14: and 15, dependingfrom bottom of rail and traveling in vslots k1,6 (see Fig. 22)

in bed-plate B. The rod'Q isshown attached to one bolt, the other having a nut only on it; but both must be left a little slack to allow of the easy travel of the bolts, or they may be fitted with two nuts each, the inner one being left a little slack and the outer one being screwed up tight. Whenever this alternativemethod of attaching the points-rod Q to foot of pivoted rail is adopted the adjoining sleepers should be set on masonry blocks.

Fig. 5 shows a longitudinal section of rail A through its center line '3 3. Here it is vshown that railA bearsonthecenter bearing- -or trailing-points end. lIf the balance-of the rail is'much affected, itcan be counterbalanced by bolting -sh-plates lto web of short length.

`Having now .particularly described and .ascertained `the nature vof-our said inventioniand in `lwhat manner the same is -to be performed, we declare that what we claim is- In railway-crossings, a centrally-pivoted splice-rail, lmeans for actuating said rail, a

base-plate,stopchairs secured to Vsaid plate on which therail moves, chairs carried bythe rail :and sliding on the base-plate, lockingbolts carried by thestop-chairs'on the baseplate'andadapted i'to engage thechairs onthe rail to .lock the -rai-l in positionandmeansfor operating Asaid bolts.

In .testimony whereof :we have signed .our names tothis specification in the presence-of two subscribing witnesses.

.REGINALD :HENRY PIERCE. GEORGE DAV EN COURT W'ESTROPP.

Witnesses:

GEORGE WILLIAM vHoLLowAY, CHARLES HENRY PARKER.

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