US972735A - Rail-joint. - Google Patents

Description

eatemafoct. 11, 910

w. at; s. amnomson I RAIL JOINT v APPLICATIOS FILED DEC. 27, 1907.

8 a w 5 s w a e I u h m a To all iii-ham it may concern.

' joint.

service. and what is mostimportant, great considerable distance from the head of the "eXz'lct ezescription, reference being bad to the be best undcrstoml by reference to the ac- WILLIALI IE. THOMSON AND SAMUEL G'. THOMSON, 0F PHILADELPHIA, PENNSYLVANIA ASSIGNORS TO rnomson-rnomso vcompan orrmmnnnrnm, PENNSYLVANI A PARTNERSHIP. a

I a BAIL-JOINT.

72,735, Specification of Letters Patent. 7 Patnted Oct, 11, 1910 Application and December 27, 1907. Serial No. 408,296. I

with a jaw portion 6 which extends around the base flange of the rail, a piece 7 of insulation being interposed between it and the upper surface and outer edge of the base of Be it known that we, WILLIAM P. Trim:-

and State of Pennsylvania, have invented a new and useful Improvement lliRall-JOlntS,

similar material being placed underneath of whiehth'c following is a full, clear, and

the base of the rail and supported by the lower jaw. lhe upper portion of the bar accompanying drawings, forming part of r is, as shown, separated to a considerable disthis specification, in which- Fig-ares 1 to 3 are sectional views show 8 of wood or similar material through which ing ditierent forms 01 our improved rail the bolts 4. extend. The lower portionof H the bar 3 also has :1 depending bolting flange Our invention has relation to the class of 9 forthe. bolts 5. rail joints. and is designed to provide an insulated rail joint; which combines the feathe upper and lower bolting flanges of the 1 titres of chcapness sa'l'c insulation and hard bar 3 form a straight vertical girder. 'lhc HIOdIl'lC-ZLUOD shown in Fig. 3 is similar to the form shown in Fig. 1, except that stiil'ness without, being too rigid, all of which are "fundamental requirements. i

The main feature of our invention con- Lists in a rail joint ha'linga splice bar which has a continuous upright girder and a flexible portion located adjacentto the vertical plane of the outer edge of the rail base. The continuous girder extends from the top to the bottom of the bar and lies in a generally upright position; we desire in some cases to bend the lower portion of the upright; girder slightly inwardly for purposes explained hereafter. ()ur bar rontacts only with thcbroad insulated faces of the base portion of the rail, and is kept at a outer side oi the upright member 3 and the nut 4, in lieu of the insulation. In the case where tlie'wooden blocks are used above .or below the rail base metal may be placed between the block and the rail or between the block and the splice bar, without departing from the spiritof our invention.

shown and described, the only contact bekept'at a considerable distance from the web rail where the insulation is invariably and head of the rail. pinched out and destroyed Isulliciently to make a metallic contact between the rail and the bar in the. insulated railjoints heretofore used.

The-precise nature of our invention will almost invariably 1.;i iched out and destroyed at the head of the raii so as to permit metallic contact between the rail and the bar. By

of the rail, there is no possibility of getting companying drawings, wherein we have a metallic contact between the rails and the shown several modified forms thereof, it being premised however that the invention on the base of the rails. is susceptible of various other :nod-ilication; without departing from the spirit and scope of our invention.

In the drawings, the nunicrai 2 wherever seen designates the rail, 25 the splice bars, and '4 and lithe jointbolts the former being the bolts which extend through the web por-, tion of the rail, and the. latter the bolts. which extend below the rail base.

In the form of the invention shownin This construction 'matcrial required, and with the various arrangements of the wooden blocks makes a very cheap insulated joint. It will be noted that the block as shown in the upper pocket not essential to the splicing or stiffening capacity of the joint,-but that it can be omitted:

insulating material'which will exclude any tilt} will, and a bl k. 7! ood or other tance from the rail with an interposed block 55 v i i Fig. 2 shows a form similar to Fig. l, but 7 0 a wooden block 8 is interposed between the 75,

facing plates or separate insulating mat so I Itwill he noted that.- in all the t'orms' 8 'tween the War and the rail is at the base of i the rail, the upper member of the bar being It has b en found in 901 practice that. the insulation of a rail oint is keeping the metal parts away fromthe head bar, except through the broad'bearing faces also greatly lessens the amount. of insulating 7 lwtwccn the bar and the web of the rail is or this pocketcan be filled with any kind of V Fig. I, the lower part ofthe bar 3 is-formed substance which might otherwise get into it ED TA ES PATENT OFFICE. I

tralized. Our preferred form has vertical upper and lower bolting membbrs, near the outer edge of the rail base, with inwardly extending resilient bearing ribs in order to give great stiffness to the bar and at the same time form an elastic and springy structurewhich is very much less liable to damage the insulation than a rigid longitudinal member having a solid bearing under it. Such arrangementof the lower member together with the inwardly extending bearing member above the rail base and the upwardly extending bolting member inclosing the block gives a very cheap construction and at the same time an insulated joint which is stiffer and safer against damage than any yet constructed. It is essential to have the bolts above the inwardly extending jaws at this point ,horizontalpull of the bolts.

and below the rail base in order to get adeuate clamping etl'ect. It is also very essential tor the barto have a narrow neck or flexible section extending around the rail base and connecting the upper and lower portions of the bar, in orderthat the action of the upper and lower bolts'wili effectively clamp thev rail base. We claim as entirely new the combination of the two boltim leverage members acting on flexible inwardly extending clamping flanges in such a way as to give a clamping action on the top and bottomof the rail base in addition to the direct This clamping action is greatest adjacent to the rail web where it is most effective in holding the rails to line and surface and yet the flexibility of prevents the insulation from being pinched out as is the case with bars bolted above and below the rail base and having their bolting members joined to the case clumping, members adjacent to the rail web. Thenarrow neck portion around the outer edge of the rail base gives a great closing-in or horizontal clamping elasticity to the bars and yet does not. perceptibly decrease the great ver-- tical stiffness obtained by the almost con-. tinuous vertical girder formed by the bolt" ing'members. The flexible inwardly extending clamping jaws also afford a maximum lateral stillness to the bar with a minimum amount ofmetal, which with the clamping action ives an insulated joint which will be ver e ective in maintaining the rails in line an surface by its action on the base of the rail only and without any assistance from a sulation has hitherto been almost immediately pinched out between very rigid faces.

Our new construction combines the greatest stifl'nesscoupled with-the greatest elasticity in relieving the insulating bearing faces and gives a bar made with a minimum amount bearing under the head of the rail where in-' or metal that will always adjust itself to a Y perfect fit and stay in a tightened position I for a long time. The bolts above and below the rail base increase the bolting capacity to a maximum. They maintain a perfcctlyllat fit between all the bearing faces and do not allow the bars to kicl; out below and thus throw all the pressure on one part of the insulation which soon results in its destruction.

plied to ordinary T-rails as an insulated ]OlI1t, it Wlll be obvious that it is applicable to rails of other sections, and that certain \Vhile we have shown our invention as apinsulating parts can be omitted or replaced I by 'metal parts to alf'ord a positive joint for regular service, or to afford an insulated jointwhich contacts with one rail'an'd is insulated from the other rail end.

Although we show wooden blocks in our drawings, we may use in their place any kind oi'filling material that will act as an insulator audit is with this interpretation that we use the word block in our claims.

\Ve claim V '1 1. In a rail joint, a splice bar having two upright bolting members located adjacent to the outer edge of-the rail base, flanges pro-- jecting inwardly to form a recess to receive the greater portion of one of the base flan es ofthe rail, and bolting means above and low the rail base to clamp said inwardly j projecting flanges to the rail base. 7

2. in a rail joint,'a splice bar havin an upright bolting member above the rail ase and another upright bolting member below the rail base, both of which are located adjacent to the outer edge of the rail base, a

flange projecting inwardly along the rail base from each of said bolting members to clam the rail base, and bolting means for holding said splice bar to the rail.

3. In a rail oint, a splice bar having two upright bolting members lying in lanes adjacent t0 the outer edge'of the rail ase,boltmg means applied to said bolting members above and below the rail base,.a-nd baseclamping flanges projecting inwardly to form a recess whlch 1s contract-able by the application of said bolting means.

4. In a rail joint, a splice bar having anupri ht bolting member joined to an in war 1y rojectmg'member aboye the rail base and another u right bolting member 'oined to an inwar ly projecting memberelow the rail base, each of which juncturcs forms an L-shaped structure having its a- 1 adjacent to the outer edge of the rail base,

l y L and bolting me ns above and below-the rail base toelamp said splice bar to the rails.

In a rail joint, a splice bar having an L-shapcd portion above the rail base and embracing a filling block between. its members and the rail, another L-shaped portion below the rail base. and bolting means above and below the rail base to clamp said parts to the rails. v

'G. In a rail joint, a splice bar having an npright bolting member above the rail base, a filling block between said member and the web of the rail and another block on the out-' side of said member another upright boltin; member below therail base, both of which bolting members are located adjacent to the outer edge of the rail base, a fian e projecting inwardly from each of'said bolt ing nwinhers to form a recess to receive the greater portion of one of the base flanges of the rail, and bolting means above and below the rail base to clamp said parts and the rails together;

T. In a rail joint, a splice bar having two upright bolting members located adjacent to the outer edge of the rail base flanges projecting inwardly to form a recess to receive the greater portion of one of the. base flanges of the rail, bolting-means above and below the ail base to, clamp said inwardly projecting flanges to the rail base,and means for insulating said splice bar from the rail. 8. In arail joint, a splice bar having two upright bolting members located adjacent to the outer edge of the rail base, flanges projecting inwardly to form a recess to receive the greater portion of one of the base flan es of the raih and bolting means above and elow the rail base to clamp said inwardly projectingflanges to the rail base, the upper upright bolting members being entirely outside of the heads of the rails. e

In testimony whereof, ive have'hereunto set our hands; WILLIAM, P. IHO1\TSON. SAMUEL G. THOMSON.

Witnesses:

S. E. Pa'i'rn'nstm, MeLnon THOMSON.

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