US1252662A

US1252662A - Switch and frog.

Info

Publication number: US1252662A
Application number: US14173917A
Authority: US
Inventors: Edward S Cobb
Original assignee: COBB SHOCKLESS CROSS CORP
Current assignee: COBB SHOCKLESS CROSS Corp
Priority date: 1917-01-11
Filing date: 1917-01-11
Publication date: 1918-01-08
Anticipated expiration: 1935-01-08

Description

E. S. COBB.

SWITCH AND FROG..

APPLICATION FILED 1AN.|1. 1917.

1,252,662 Patented Jan. 8,1918.A

4 SHEETS-SHEET l.

@la /20 I E. S. COBB.

SWITCH AND FROG.

APPLICATION FILED IAN.II,I9I1.

1,252,662 Patented m1481918.

4 SHEETS-SHEET 2.

, @4 fr /P of L00 /D\ 7mm/a [dwf/J (bij,

E. S. COBB.

'SWITCH AND FROG.

APPLlcATloN FILED JAN.11.1911.

1,252,662., Patented Jan. 8,1918.

4 SHEETS-SHEET 3.

E. s. COBB.

SWITCH AND FROG.

APPLICATION FILED IAN. II, IQII.

Patented Jan. 8, 1918.

4Y SHEETS-SHEET 4.

tion is the vertically movable rail Yit is a desirable one.

@TE STE@ FAT FFQE.

EDWARD S. CGBB, OF lF-IITTIER, CALFGRNIi-, ASSIGNOR TG COBB SHGCKL'ESS CROSS CORPORATION, 0F NEW YORK, N. Y., A CCRRATON GF NEN/V YORK.

SWTCH .AND FROG.

Specicaton of Letters Patent.

Patented Jan. S, MMS.

Application filed Januari; 11, 1%1'7. Serial No. 141,739.

S. Conn, a

and frogs; and the invention consists inV certain improvements in switches and frogs as hereinafter pointed out. f

Heretofore it has been commonin railway switches to provide movable rails, or parts of rails, in the form of switch points niov able in a horizontal plane. lt is a'feature of'my invention that the switch points are movable vertically instead of horizontally; that the switch rails are vinovaU-ole vertically; that the rails at the Afrog are movable vertically with relation to each other, so. as to provide free and uninterrupted and smooth passage of a wheel over the frog in either direction and on either track; and that, specifically, the whole of the switch rails, between the switch points and the frog, are movable vertically bodily', `each as a single, solid structure, and each yin interlocking juncture with the immovable rails at tie switch point and at the frog.

The fundamental feature of this invenparts, which will term herein switch rails, because by their operation they switch the traffic either onto one track or onto the other. rThese switch rails are preferably moved vertically by a vertical reciprocating movement, so that the switch rails are al ways kept in horizontal position. This preferred operation enables me to forni and use a very solid switch rail supporting and moving mechanism and structure, to be hereinafter described. These switch rails also preferably extend from the switch points to the frog; and although this is not a necessary feature of my invention, yet ln my invention l wish to make a clear passage onto or off either one or the other of the two tracks, by the simultaneous raising and lowering of the rails at the switch point and at the frog; and l find it advantageous to make the switch rails each in one solid structure between the switch point and the frog and'to then move each switch rail kas a solid unit. This arrangement enables me to provide a very strong, solid rigid structure 'for supporting and moving the switch rails, and enables me to produce a switch providing a substantially continuous passage for traiiic on either one track or the other, and a switch which is, in all essentials, just as continuous, strong, and rigid as an unbroken integral part of a straight or curved track. ln fact, it is an object of this invention to provide. a switch structure over which trains may proceed at unslackened speed, without or pounding, and to provide aswitch structure whose durability and life is greatly in excess of that of any switch structure now known. Other objects of this invention are made apparent in the following specification, wherein l explain a preferred form of switch structure embodying my invention.

And l refer to the accompanying drawings in which, for thev purpose of this speciH fication, l have illustrated a preferred form of structure embodying my invention. in the drawings Figurel is a plan of my .iinproved switch; Fig. r2 is a horizontal plan section of the saine, said section being taken below the heads of the rails, and parts of the supporting` box structure being broken' tical section taken as indicated by line 3-8 on Fig; Fig. l is an enlarged vertical cross section taken as indicated by line in 2; Fig. 5 is a simiiar section taken as indicated by line 55 on Fig. 2; Fig. 6 is a similar section taken as indicated by line 6--6 on Fig. 2; Fig. i is an enlarged plan showing a preferred construction for the frog; Fig. 8 is a horizontal section of the same taken beneath the heads of the rails; Fig. 9 is an enlarged plan showing the meeting of the rails at switch point; Fig. l0 is a horizontal section of the same taken beneath 4'he heads of the rails; Fig. l1 is an enlarged plan showing another form of frog construction, and Fig. l2 is a a box structure, as such details will of course vary with `different installations. This supporting structure supports the

rails

21 and 22 of the main track which leads up to the switch point, and also supports the

rails

21a, 22, 21 and 22 of the switch tracks which leadaway from theswitch point. Of course,

it will be understood that one of these Vswitch tracks-may be, in reality, amain trackg'but it is not material to take notice of this fact,

so far as iny invention is concerned. I i-llustratel the two tracks as being curved; but it will be readily seen that one of said tracks can be a straight continuation ofthe main.

track 21, Therefore, without limiting myself thereby, I shall refer tothe two tracks'21a, 22a, and 21h, 22D, as switch tracks.

Y The rails 21a and-'22b may be, and preferrthe foundation.

ably are, integral contini'iationsof the

rails

21 and 22; and all four rails, 21a, 22a, 21b and 22b are iniinovably and rigidly set upon The rail portions 21c and r22, which extend from the switch points and are not curved to follow the configurationsof the rails 21C and 22l and arev of Asuch width as to form supports upon which all parts ofthe 'curved rails may rest. These beams are preferably constructed of a rolled' Vsteel beam 211, preferably channel shaped',

carrying a wooden filler 25, upon which the railsareV directly supported.l The/rails are bolted down on the wooden filler by ,suitable bolts 26, which bolts also act to secure the camV bearing lugs 27 to the iindei' sides of vthe beams. It'. willv be noted that the railsr '21cxand 22C rest directly upon the resilient `neath the switch points I:

.also preferably at a point or points interme` wood filler, and are bolted thereto to prevent any upward movement, supported yby 'thewood iiller, to absorb shocks. VI have made this beam Aconstinctioi the particular subJect matter of a co-pending application 'entitled rail support, filed March 6, 1917, Ser. No. 152,521, and I consequi-intly do notv here enter into its details.

The cam bearinv'luvs 27 are situated be- .and rrog F, and

diate. For instance, I show one set of cam ,bearing lugs 27 midway between the points I: and F. I locate three cam` shafts 28 in lsuitable bearings 29; and these cam shafts carry cams 30. The shafts 28 are arranged transversely across the structure and each shaft carries tivov'can'is 30 located in such relationship Vupon .the shaft 28 that whenyone l'cam raises its cam bearing 27, the other cam I interconnect lowers'its cani bearing 22' the three cain'shafts 28 by suitable means,

Y as byv sprocket connections l31, so that the three shafts may be operated together, The

` revolution.

These shafts maybe operated from any suitable sourceof power or movement, under any suitable control, andk are rotated back and forth through something` less than a full W hen the shafts are rotated to one position it will be seen that one of the supporting means, lwith its switchrail, will be lowered `whileythe other one is raised; and when the shafts Yare rotated to their other positions, it will v.be seen that the positions of the switch rails will be reversed. jIt will be noted that thesupporting means, including rthe supporting` cams, etc., form very solid and rigid supports for the movable raiis. Tho-se portions of thecams which are in engagement with the cam bearings when the cams -are in the position shown in Fig. 3, .with the rail in itsuppermost position, are circular and concentric aboutthe. 28; so that these p ortionsof the cams may fornrbroad bearing surfaces for the cam bearings, when the rail isin its uppermost position, and so that the. rail reaches its uppermost position somewhat prior` to the end of the movement of thecanis, thus providing that the accurate positioning of the movable rail is not dependent upon any slight variation in the amount of .movement of the ca1n. v v

I have saidthat I prefer to make the Switch rails each in onesolid structi'ire, and

move each oit-them bodily, as an integral unit between the switch points and the-frog.

'I shall 'now eXplain'hoi/vthe switch rails make their. janet-.ares with the stationary rails at theswiteh points and Vat the frog; and explain how the switch rails are interlocked with the Stationary rails, and how they are held rigidly and firmly against anyV lateraly displacement. At Yeach switch 'point I make a out lback into Veach of the rails 21 and-22, reaching from its inner edgeutransparticularly 9) and then I provide a vertical bearing face all which leads straight from the inner end of this cut 4*-0 to the point l2 where the outer face oit the switch rail,

21c or 22C, meets the inner face of the

rail

21 or 22. rIhe switch point ends of tne Vswitcl'i rails 21? and 22c are shaped correspondingly, so as to fit iiito'the ,cutsianiil hear against the vertical faces al1, in the manner best shown in Figs. '4; and 5. 'The webs of ioo the rails 21c and 22C may be reinforced and formed. to follow this verticalbearing face 41, as illustrated at 43 in Fig. 10;` andthe webs of these rails are further reinforced at these points, bythe `filler blocks 44 attached to therail webs on their inner faces. These filler -blocks lll are provided not only for fthe' purpose ofreinforcing the movable switch rails, butalsoare provided for thepurpose inner faces against which the guide members 46 may bear. These guide members 46 have outer vertical faces conformed tov fit against the inner vertical faces 45fof the filler blocks and are bolted, or otherwise secured, to the box structure 20, so as to form rigid Aguides on the inner sides of the vertically movable switch rails to prevent their displacement inwardly toward each other.

L he webs of the

rails

21 and 22 may also )e enlarged or reinforced in any desired manner, as illustrated at 47, to provide the vertical bearing faces 4l, as herein described, to eX- tend below the heads of the

rails

21 and 22; in fact, to provide that these vertical bearing :faces 41 extend vertically from top to bottom of the rails, as shown in Fig. 4. Furthermore, the webs of these rails may also be provided with reinforcements or extensions in any suitable manner, as indicated at 4S, to provide vertical surfaces 49 against which the suitably surfaced ends of the exterior filler blocks 50 may form bearings. These exterior filler blocks are mounted upon the webs of

rails

21 and 22, and present outward surfaces which are guided by the outer guide members 51 secured to the box structure 20, similar to the inner guide members 46, excepting that the inner guide members 46 have portions 461y providing for the passage of the flanges of wheels, while the other guide members 51 are not so provided. l' thus provide against outward lateral displacement of the movableswitch rails away.

from each other; not only by the operation ofthe exterior guide members 51, but also by the bearings of the movable switch rails upon the surfaces 4l and 49. lt will be noted that the

guide members

46 and 51 extend right up close to the frog F, so as to support the movable switch' rails at the frog, as elsewhere. However, the frog construction is such as to lock the movable rails into place and hold them against lateral movement, as will now be described.

At the frog F the two vertically movable rails 2lC and 22c meet on a central longitudinal vertical plane that is, the heads of these two rails and the inner filler blocks 44,

and the webs of the two rails, all meet on.

this central longitudinal vertical plane; being a plane of relative vertical movement. The beams 23, supporting the rails, mayalso be shaped and surfaced at the frog so that they also meet on this same vertical longitudinal central plane 60, as is indicated in Figs. 2 and 5. The junctures of the rails 2lc and 22C with the

stationary'rails

22a and 22", are preferably made as shown in Figs. T and S. l utilize vertical transverse bearing planes 6l which are located as follows: Passing through the vertical lines of meeting of the exterior head surfaces of the rails 21". 22a and 22%21), (said lines being indicated by the numeral 62 1n Fig. 7) and lying at right angles to the rails 22a and 2l", or lying approximately at right angles to those rails. These two planes 6l, being symmetrically disposed, meet a't the central longitudinal plane 60. The formationv is consequently such that each of the rails 21C. and 22c has an acute point 63, and has a vertical bearing surface 6l 'which extends not at right angles to the

rail

21c or 22, but extends diagonally back along the rail from the acute point 6B. Thus the bearings of the rails 2lc and 22c at the surfaces 61 substantially and very materially prevent outward displacement of these two rails. This is due to the fact that the two rails 2lb and 22h cannot move longitudinally, because their opposite ends, at the switch points, bear against the vertical surfaces 40 as illustrated. The vertical surfaces 40 at these points may be extended by providing the rails 2l and 22 with filler blocks 65, so that the vertical end bearing surfaces 40 may be extended from the top to the bottom of the rail. lt will be seen that the movable switch rails are thus interlocked between the stationary rails, so that they cannot be moved either longitudinally or transversely out of.

proper position. At the frog F the two stationary rails 22a and 21h may be provided with short. filler blocks 66, so as to malte the surfaces 6l as extensive as possible, these filler blocks 66 bearing against the exterior filler blocks 50 of the movable rails. The

i rails 22a and 2lb may be not only mounted securely upon the box structure, but may also bev secured together at the frog in any suitable manner, as by having a block 67 placed between them and securing means 68 being provided.

From the foregoing description it will be seen how my switch structure is rigid and strong in construction, and how the movable switch rails are interlocked in position and cannot be horizontally displaced, either laterally or longitudinally.v T will now show how my switch provides a smooth and uninterrupted passage for trains over either track. Suppose, for instance, that the rail 21 is lowered, and the rail 22". is raised, as shown inthe various views. This makes a continuous passage from the

track

21, 22, to the

track

21a, 22a, the rail 2l2l"L being continuous, as is hereinbefore shown, and the movable switch rail 22c forming a continuous connection between the

rails

22 and 22a. The fact that the rail 21--2l'-L is not broken is readily seen from Figs. 4 and 9 of the drawings, It. will be noted that the cnt into the head of the rail 21, as shown at 40, does not extend back to the center of the rail, and does not break the continuity of the tread surface on the head of the rail. This tread surface, or the center thereof, is indicated by the dash and dot line designated T in Fig. 9; and it will be seen that this line isv not broken into by the cut in the rail 21. Therefore, when .the raily 21c is lowered to adord passage for the flange over the rail 21-.212 then there is al continuous wheel supporting surface, unbroken, on the rail Q1-21a. By further reference to Fig. 4 it will be seen thatthe cut back into the rail does not extend beyond they curved' side portion of the'up'pe'r facevof the rail head', and that the upper edge of bearingsurfa'ce 41 is substantially inthe up-per or central flat part ofthe upper surface of the rail head.` Now vconsider this' fact in' connection with the passage of a wheely over the

rails

22, 22c and 22a. It willbe noted that the lineroftread, indicated byfT 'in Fig. v'1, crosses* this surface 41 at a. very acute angle and substantially at the poi-nt where the center lineof the rail 22C meets the surface 41. The upper surfaces of the rails at this point of crossing are substantially continuous, and in a subs'tantially horizontal plane, without any dip at the point of crossing the surface 41. Consequently, there is a smooth. continuous and unbroken passage from the rail 22 onto the rail 22C. At' the frog F it will be noted that -this tread line T passes substantiallyover the center of thefrog, wherethe rail points 63 meet. VThe rail 213 being lowered, there .is of course a gap in` the ra'il-22C-'22, at this point; but this gap only extends to the cente'rof the railaandfdoes not extendy substantiaily beyond the center, so that the tread surface on -the' head of the rail is substantially unbroken. Furthermore, I have shown, in Figs. 11 and 12, modified forms of the' frog juncture; inwhich modified forms it will be seenv that the tread line T is not only substantially unbroken, but is perfectly continuous. In Fig. 11 show the stationary rails, 221v and 211,:provided with a stationary point 70,I which projects `centrally longitudinally between the ends of the'two movable switch' rails 21C and 22. The switch rails meet `each other as before on the vertical longitudinal central surface 60, and they meet this extending point7.0..on the diagonal surfaces 71. The surfacestilZ1 (located the same'as .the surfaces V61, hereinbefore describediextend inwardly not to meet each other, but to meet the diagonal sidesurfaces 71 of the point 70.

In Fig. 12 ythe point 70 is shown with a rounded'1 end 70,`fra`ther than an end which proceeds to a sharp point, as shown in Fig.Y 11.v

vAlthough I have proceeded to describe this embodiment of my inventiony with some specific detail, I have done soin order to make my invention. thoroughly. understood, and not because I conceive my invention to be limited to the specific features and fde tailsA of construction, etc., herein described. Drather do I conceive of m'yinvention as in- `.cluding vmany variations and 3 modifications whichmay suggest themselves in so far as they are included within the scope of the following claims.

Having described a. preferred form of my invention, I claim: 1 1.. In ay railway. switch, in` combination with a track and a pair of switch. tracks, the rails of said track.` extending on to form the outer' rails of the switch tracks and the inner rails .of .the switch tracks meeting at a .fi'og,'switch railsextending between the. frog and switchpoints at therailsof the first mentionedtrack, and mea'nslto Verticallymove the portions ofthe switcl'i lrails adjacent the frog andlthe switch points. 2. In railway switch, in combination with a track and a pair of switchtracks, the rails of said track-extending onto form the outer rails of the switch tracks and the inner rails-.of the switch tracks meeting atla frog,and vertically movable switch rails. extending between the frog andswitch points at the railsof the first mentioned track. i Y

y 3. In a V railway switch, in combination with a track and a pairof switch tracks, the rails of said track extending onto form the outer rails ofthe switch tracks and the innerrailsof the switch tracks meeting at a frog, vertically movable switch `rails extending between the frog and switch points at the rails -of theiirst mentioned track, and

mcanstomo've said switch rails vertically,

4. Ina railway switch, vin combination with a ytrack and a pair ofswitchtracks, the rails of said track extending onto form the outer ra ils of the switch `tracks and the4 inner rails of the switch tracks meeting ata frog, vertically movable switch railsA extending between the .-frog and switchpoints Iatthe rails of the first mentioned track, and means t0 bodily move each switch rail vertically to upper vand lower positions parallel .toeach other.

5. Inv a railway switch, in combination with a track and. a pair of switch tracks, the rails of said track extending on to form the outer rails of the 'switch tracks'and the inner rails of the switch, tracks meeting at a frog, switchrails extending 'between the frog and the .switch pointsat the railsof the first mentioned track, and. means to bodily move each switch rail vertically to upper and lower positions parallel to each other, said means including a supporting beam for the rail, and cam means carrying said beam and adapted .to move it vertically.

6. .In a.V railway switch, in combination with a trackzand a pair of swltchtracks, the rails Vof said .track extending onto form the outer rails of theswitch tracksand the inner rails of the switch tracks meeting at a' frog, vertically movable switch rails extending between .the frog and switch points at the railsfof the first mentioned track', and meansv to cooperatively movesaid switch rails vertically. a

7. In a railway switch, in combination with a track and a pair of switch tracks, the rails of said track extending on to form the outer ails of the switch tracks and the inner rails of the switch tracks meeting at a frog, each of said iirst mentioned rails being notched on their inner faces to present a vertical shoulder in a transverse plane facing toward the frog, the last mentioned rails ending at the frog at transverse sui-faces, and vertically movable switch rails longitudinally confined between said shoulders and surfaces.

8. In a railway' switch, in combination with a track and a pair of switch tracks, the rails of said track extending on to form the outer rails of the switch tracks and the inner rails of the switch tracks meeting at a frog, each of saidk first mentioned rails being notched on their `inner faces to present a vertical shoulder in a transverse plane facing toward the frog and a vertical side bearing surface extending from the rear of said shoulder diagonallj7 along the rail at an acute angle to its longitudinal axis to the inner face of the rail, the last mentioned rails ending at the frog in transverse surfaces substantianlly perpendicular' to their longitudinal axes, and vertically movable switch rails longitudinally confined between the said shoulders and surfaces. n

9. In a railway switch, in combination with a track and a pair of switch tracks, the rails of said track extending on to form Vthe outer rails of theswitch tracks and the inner rails of the switchtacks meeting at a frog, cach of said first mentioned rails being notched on their inner faces to present a vertical shoulder in a transverse Vplane facing toward the frog, theV last mentioned rails ending at the frog at transverse surfaces, vertically movable switch rails longitudinally confined between said shoulders and surfaces, vand vertical guide means at the sides of the switch rails to hold and guide them against lateral displacement.

10. In a railway switch, in combination with a track and a pair of switch tracks, the yrails of said track extending on to form the outer rails of the switch tracks and the inner rails of the switch tracks meeting at a frog, each of said first mentioned rails being notched on their inner faces to present a vertical shoulder in a transverse plane facing toward the frog and a vertical side bearing surface extending from the rear of saidshoulder diagonally along the rail at an acute angle to its longitudinal axis to t-he inne;1 face of the rail, the last mentioned rails endingv at the frog in transverse surfaces substantially perpendicular to their longitudinal axes7 vertically movable switch rails lioiigtudnally confined. between the said shoulders and surfaces, and vertical guide means at the sides of the switch rails to hold and guide them against lateral displacement.

ing notched on their inner faces to present avertical shoulder in a transverse plane facing toward the frog, the last mentioned rails ending at the frog at transverse surfaces, vand vertically movable switch rails longitudinally confined between said slioulders and surfaces, and vertical guide means on each side of each of the switch rails to hold and guide them against lateral displacement.

12. In a railway switch, in combination with a track and a pair of switchtracks, the rails of said track extending on to form the outer rails of the switch tracks and the inner` rails of the switch tracks meeting at a frog, each of said first mentioned rails being notched on their inner faces to present a vertical shoulder in a transverse plane facing toward the frog and a vertical side bearing surface extending` from the rear of said shoulder diagonally along the rail at an acute angle to its longitudinal axis to the inner face of the rail, the last mentioned railsV ending at the frog in transverse surfaces substantially perpendicular to their longitudinal axes, and vertically movable rails longitudinally confined between the said shoulders and surfaces, and vertical guide means on each side of each of the switch rails to hold and guide them againstl lateral displacement.`

13. In a railway switch, in combination with a track and a pair of switch tracks,

the rails of said track extending on to form the outer rails of the switch tracks and theinner rails of the `switch tracks meeting at a frog, each yof said first mentioned rails being notched on their inner faces to present a vertical shoulder in a transverse plane facing toward the frog and a vertical side bearing surfaceextending from tlie'rear of said shoulder diagonally along the rail at an acute angle to its longitudinal axis to the inner face of the rail, the last mentioned rails ending at the frog in transverse surfaces substantially perpendicular to their longitudinal axes, and vertically movable switch rails longitudinally confined between the said shoulders and surfaces, said switch vrails meeting each other at the frog alongY a central longitudinal vertical plane, and abutting the last mentioned rails at their terminal planes, said terminal planes making acute angles with said central longitudinalmeeting planel Y ltlQInaurailway switch', in' combination lwith a -track and a'pair of switch tracks, the rails of'said track extending on to form the outer rails of, the switch tracksaiid the innerjrails of the Vswitch'trackjs meeting at a frog, each of said iirst mentioned rails ,being'notched on their inner faces to present a lvertical shoulder in a transverse plane facing'toward the froganda vertical side bearing surface extending from'the rear of Vsaid shoulder diagonally along therail at an' acute angle to its longitudinal axis to the Vinner faceof the rail, the last mentioned rails ending at the frog in transverse surfaces substantially perpendicular to their longitudinal'i axes, and verticallymovable switchrails longitudinally confined between the said shoulders and surfaces, said switch rails meeting each other at the frog along va central longitudinal vertical plane,eand abuttingthelast mentioned rails at their terminal planes', said terminal planes mak'- ing acuteangles with said centrallongitudinal meetingplane, and vertical guide inembers'on'each side of each of the switch rails to hold and guide them against lateral displacement. y l j l15,. In a railway switch, in combination with 'a track and a pair of switch tracks, the rails'ofsaid track extending onto form the outer railsof the switchtiacks and the inner :rails of the switch tracks meeting at a frog, f'switch 4rails `extending vbetween Vthe Afrog andswitch points at the rails of the first mentioned track, and means to vertically move the portions'of the switch rails adjacent the frog and the switch points to upper and lower positions parallel with each other. v v A V16.' 'In'Y a railway switch, in combination with fixed track rails, vertically vmovable g switch rails, and abutment surfaces at the opposite ends lofthe switch rails .between e which the switch rails are confined.

17. In a railway switch, in combination withjlix'ed track rails, a .vertically movable i lswitch rail, and abutment surfaces at the opposite ends Aof* the switch rail between [which the switch rail is confined. v

:18."In, a railway switch, in` combination with fixed track rails, a vertically 'translata- `blc switch rail,l and vertical abutment surfaces at the opposite ends ofthe switch rail *between which the switch rail is longitudinally confined. u A

'1-9J'In arailway switch,A in combination with outer xed trackrrails andinner iixed track rails which meet at a frog, a vertically movable switch' rail extending'between. an outer-rail andthe frog, and vertical `abut- Ymentsurfacesion' the fixed rail Vandthe frog I between which the switch rail is longitudi- .nfllvconned- QOQIn arailwa'y" switch,ncoinbination with outer fixed track railsand iniiinxed point.

track rails -meeting Vfat `afig, fa l switc'hgragil extending between an outer rail and ,the frog and vertically movable as a single piece. Y

vtrackrails meeting at a frog, aswitch rail extending` between'the frogand Ya switch point at an outer rail, and means to vertically move the portions of the switchrail ladiacent `the. frog andthe switch 'pointf' 23. vIn ,l iailwayv switcli ,i nf combination with outertixed track Vrails vand inner Vfixed Vtrack rails, meeting at a `frogQQaswitch. rail extending between the frog and a switch point at ano-titer rail,v abutmentsurfaces at v*theswitch:A point A,frog between whicli the l:switch 'rail' 4is longitudinally `,ecrit-ined,k and `means to vertically kinnove tli'eportions'Y o the switch rail adjacent thefrogandI the switch Y 24. ,In av railway switch, combination with outer ltixedtrack rails, and` inner fixed track rails A meeting -at a frog, a `switch rail 'extending between "the frog' andfa switch point at an' outer rail,4 and means't'o'vfei'- tically Itranslate' the ,portions ofthe switch rail adjacentthefrog and switchpoint.;v .l

' 25. railway switch,l in combination with ,outer Vfixed track rails' and' inner fixed Y track ,rails ,meeting a frog., l a switch .rail

extending between v ythe 'f frogY fand` 'a switch point at an outer rail, vertical transverse v'abutment surfaces yat thel switch point and frog between l which the switch' railv is longitudnally @O nned., yandv means] te ivertically translate thelportions of the switch'rajilacL Q jacent fthe frog-and switch ypoint'. A

l Q6, VIn rVara'ilway swi-tclifin'v combination with aiixed ytrack rail, avertically; movable switch *rail` y bearingi laterallyftritvz'its'v enfd against theJ 'iixedgraih a vertical' shoulder "on the fixed frail against which tliefend ofthe switch rail bears `and isve-rtic'ally' movable.

27,. In railway switch,uiiicom'bination witha xed track Mil, said fixedjrail having a vertical lateral surface and: av vertical trans verse shoulder at the end of SaidSUrface, a

'vertically movable switch bearing-flaterallyagainst `said Ilateral surface@ with its end bearinggagainstsaid,transverse shoulder.

28. In a railwayswlitch, in combination -with afixedfi-,ail' having a vertical lateral bearing surface. a bearingblock on. the side of the fixed railV presenting an Yend surface forming "fag, vertical transverse shoulder' )at jthewendY jofv said flateralbefaring surface; a .'verteallrmvab. c i eral bearing blocks/and said switch ia'il'airi switch V'Trail having "lat- 'iso its bearing blocks having' a vertical end suiace abutting said transverse shoulder.

29. A frog construction embodying, in combination with a pair of fixed rails meeting at a frog point, a pair of vertically movable switch rails adapted each to form a continuation of one of the xed rails; Said switch rails abutting said fixed rails upon vertical surfaces which are substantially at right angles to the fixed rails and at less than a right angle with the switch rails.

30. A frog construction embodying, in combination with a pair of fixed rails meeting at a frog point, a pair of vertically movable switch rails adapted each to form a c011- Uupes ai this patent may be obtained for five tinuaton of one of the fixed rails, and bearing blocks mounted upon each of said fixed and switch rails; the switch rails and their bearing; blocks abuttingv the fixed rails and their bearing blocks on vertical surfaces at substantially right angles to the fixed rails and making; less than right angles with the switch rails.

In witness that claim the foregoing l have hereunto subscribed by name this 29th 25,

day of December, 1916.

' EDVARD S. COBB. Witnesses:

ELwooD H. BARKELEW,

JAMES T. BARKELEW.

cents each, by addressing the Commissioner of Patents,

Washington, D. C.