US877562A - Double-spring frog. - Google Patents

Description

PATENTED JAN. 28, 1908.

J. E. GRAHAM.

DOUBLE SPRING FROG.

APPLICATION FILED JUNE 17.1907.

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JOI-IN E. GRAHAM, OF SALEM, VIRGINIA, ASSIGNOR TO AMERICAN FLANGE FROG AND RAILWAY IMPROVEMENT COMPANY, OF GAINESVILLE, FLORIDA7 A CORPORATION or FLORIDA.

DOUBLE-SPRING nace.

Patented an. 28,1908.

Application filed June 17. 1907- Serial No. 379440.

To all whom it may concern.'

Be it known that I, JOHN E. GRAHAM,. a

citizen of the United States, residing "at Salem, Virginia, have invented a certain newl others skilled in the art to which it appertains to-make and use the same, reference being had to the accom anying drawings, forming part of this speciiibation, in which- Figure 1 is a plan view of a double spring frog constructed in accordance withmy invention; Fig. 2 is a cross sectional view taken on'the line 2-2 ofFig. 1; and Fig. 3 is a cross sectional view taken on the line 3-3 of Fig. 1.

This invention relates to railway track' lgructures, and particularly to double spring ogs.

The main object of my invention is to provide a double spring fro provided with members arranged outside o the spring rails adjacent the point of the frog and having ortions which lie in a higher horizontal plOane than the treads of the spring rails for the purpose of engaging-the outer edge of the tread rim of a wheel to guide the flange of the Wheel safely past the point of the frog, thus over coming the necessit of using guard rails.

Another object o my invention is to provide a railway track structure comprising a froO point, a plurality of. spring rails normaly held against the opposite Sides of the fro point and a member arranged outside of eac i spring rail and having a guiding portion which diverges from the spring rail or is disposed obliquely thereto so as to engage the edge of the tread rim of the wheel to gradually shift it laterally and thus positively force the opposite spring rail away from the frog point and guide the flange of the wheel past said frog point.

I have herein illustrated my invention in A having guard members or guiding members connection with a double spring frog .of wellknown construction but I do not Wish to be understood as vlimiting my invention to this articulartype of double spring frog as my ldea could be embodied-in double spring frogsof various constructions.

Referring .to the drawings which illustrate one form of my invention, 1 and 2 designate rails that are disposed at an acute angle to each other and rigidly connected together to form the point 3 of the frog, said rails'being secured to a base plate 4 which is fastened to the ties 5. The movable rails 6 and 7 or spring rails which are hinged or pivotally connected to the main rails or running rails, are normally forced toward'the point 3 of the frog by'means of springs 8 located adjacent the mouth of the'frog, and springs 9 located adjacent the heel of the frog. The springs 8 surround a guide-rod 10 which extends through the webs of the spring rails and is provided at its ends with followers 11 against which the outer ends of said'springs bear, the inner ends of said sprin s bearing against the outside faces of the We sl of their respective spring rails and thus forcing the spring rails toward each other. l

The springs 9, which are'located adjacent the heel of the frog, are mounted in boxes or casings 12 having one end closed and being rigidly secured to the base plate 4, and the inner ends of said springs bear against followers, 13 secured to the spring rails, the springs 8 and 9 operating to hold the s ring rails normally against the o posite si es of the frog point so that a VWhee 1n passing over the frog on either track will have practically a continuous tread or bearing surface to travel on. The free ends of the spring rails are fastened to the base plate 4 by means of guiding links 14.

invention is to provide a double spring frog attached to or combined Withthe frog pro er for the purpose of engaging the outside edge of the rim of a wheel so as to guide the flange of the wheel p'ast the point of the frov, said guiding means being arranged in a Tilgher hoiiizontal plane than the tread of the spring ral As shown in Fig. 1, two members A are arranged outside of the spring rails adjacent rails7 have always been ar-` the point'of the frog, said members having guiding portions 15 which lie in ahigher horizontal plane than the treads of the spring rails 6 and 7 so that the outside edge of the tread rim of a wheel which enters the frog will engage the portion 15 and thus be guided safely past the point 3 of the frog. Preferably, the members A are so dis osed relatively to the spring rails that t e guiding ortions 1,5 of' said members will diverge rom the s ring rails or extend obliqueljy to said rai S. The advantage of having these guiding portions 15 disposedobliquely to the treads of the s ring rails is that the wheel on entering the rog will gradually en-' gage the guiding portion of the member A arranged outside of the s ring rail on which said wheel is traveling, t us preventing the Wheel and guiding portion from receiving a sudden shock, said obliquely disposed guiding portion also operating to gradually shift the Wheelv laterally so that its flange-will be guided safely past the point of the'frog.

he guard members A arev riveted or otherwise secured to the base plate 4, and braces 16l are provided for I imparting additional strength to the members A and also to aid in anchoring them to the base plate.

I have herein shown the members A as consisting of T-trails which are heavier or of lgreater depth than the spring rails 6 and 7 so that the heads-or guiding ortions 15 of the members A will lie in a igher horizontal plane than the treads of the spring rails. r do not wish it to be understood, however, that I consider my invention limited to guard members of this particular construc tion as said members could be cast, or, if desired, light-weight l"-rails mounted on fillers or blocks could be used, the essential feature of the guard members being a guiding portion arranged in a higher horizontal plane than the treads of the spring rails and preferably disposed obli uely to said treads so as to prevent the W ieels and the guiding member rom receivin a sudden shock or jar and also to adually s ift the wheel laterally.

ith a double sprinor frog of the construction shown in Fig. 1, when a wheel enters the frog on the spring rail 6 the outside edge of the tread rim of said wheel will come into contact with the guiding portion 15 of the member A arranged adjacent said spring rail, and said guidinfJr portion will gradually shift the wheel laterally so that its iiange will )ass the point of the frog, as shown in broken ines in Fig. 2, the spring rail 7 being moved laterally bythe flange of the wheel to carry said rail away from the frog point. A wheel entering the frog on the spring rail 7 will be shifted laterally by the guiding ortion 15 of the member A which is arrange( outside of said spring rail, and as said wheel moves lati erally its iiange will move the s ring rail 6 away from the frog point so that 'alle iange of the Wheel can pass between the frog point and the spring rail 6.

Having thus described my invention,- what I claim as new and desire to secure by Letters Patent is: f

1. A railway track structure coiiiprisingfa frog point, a pair of spring rails, and members arranged outside of the spring rails and having guiding portions located in a higher horizontal plane than the treads of the spring rails to engage the outer edge of thetread rim of the Wheel to guide the flange of the wheel past the point of the frog; substantially as described.

2. A railway track structure comprising a frog point, a pair of spring rails, means for forcing said spring rails toward the frog point, and members arranged outside of the spring rails and adjacentthe frog point and having guiding portions which lie in a higher horizontal plane than the treads of the spring rails; substantially as described.

3. A railway track structure comprising a frog point, a Vair of movable rails, yielding means for ho ding said movable rails normally against the opposite sides of the frog point, and members arranged outside of the spring rails and having guiding portions which diverge from the spring rails for engaging the edge of the tread rini of the wheel to shift it laterally past the point of the frog; substantially as described.

4. A railway track structure comprising a rigid frog point, a pair ofspring rails enibracing said frog point, and rigid members arranged outside of the spring rails and having guiding ortions vwhich lie in -a higher horizontal p ane than the treads of the spring rails to engage the outer edge ofthe wheel rim to guide it past the point of the frog; substantially as described.

5. A railway track structure comprising a rigid frog point7 a pair of spring rails normally engaging the opposite sides of said frog point, and rigid members arranged outside of the spring rails and having guiding portions which lie in a higher horizontal plane than the tread faces of the spring rails and are disposed obliquely to said treads;

members arranged outside of the spring rails l adjacent to the frog point and consisting of T-rails having heads which lie in a higher horizontal planefthan the treads of the spring rails substantially as described.

7 A railway track structure comprising a frog point, a pair of spring rails, and guard inem ers arranged outside of the spring rails adjacent the frog point and consisting of T- rails having their heads lying in a higher horizontal plane than the treads of the spring rails and divergiiig from said treads; substantially as described.

8. A railway track structure com rising a basefplate, a frog point connected t ereto, a pair of movable spring rails. embracing, the opposite sides of said rog point, and members arranged.. outside of the spring rails ad jacent the frog point and permanently connected to saidv base plate, said members having guiding portions which lie in a higher' horizontal plane'l than the treads of the spring rails and are disposed obli` uely to said treads; substantially as described.

9. A railway track structure comprising a base plate, a frog point connected-to said base (plate, a pair of movable spring rails, and guar members arranged outside' of the spring rails adjacent the frogpoint and consisting of T-rails which have their heads projecting above the hads of the spring rails and disposed obliquely to said spring rails, and means for bracing said guard rails'and permanently securing them to the base plate; substantially as described.

10. A railway track structure vcomprising a frog point, a pair of spring rails, spr1ngs' acting on said spring rails adjacent the mouth and the toe of the frog to force said rails to'- ward the frog point, and members arranged outside of said spring rails adjacent the frog point and having' portions which lie ina igher horizontal p the spring rails to engage the outer edge of the tread rim of the wheel tovguide its ange past the point of the frog; substantially as described.

ane thanthe treads of said guide-rod and interposed between the followers on said rod and the webs of the spring rails, boxes secured to the base plate adjacent the heel of the frog, springs mounted in said boxes and acting upon the spring rails to force them toward the point of the frog, and ymembers arranged outside of the. spring rails and connected to the base plate and rovided with guiding portions which are disposed obliquely to the spring rails; substantially as described.

1'2. A railway track structure comprising a frog point, a pair ofspring rails, and members arranged outside of the spring rails and adjacent the frog point for .engaging the outer edge of the tread rim of aA wheel to gradually shiftthe wheel laterally and thus guide it past the oint of the frog; substantially as describe In testimony whereof I hereunto affix my signature in the lpresence of two witnesses, this twelfth day of June, 1907.

JOHN E. GRAHAM.

Vl'itnesses:v A

' WELLS L. CHURCH,

GEORGE BAKEWELL.

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