US1731155A - Track - Google Patents

Description

Oct. 8, 1929 s. WILDT 1,731,155

TRACK Filed Sept. 22, 1928 fig! i EH5 i Wfi ///W////// V/%\ 6 41E Patented Oct. 8, 1929 Urrsn STATES STEFFEN WILDT, OF HORSENS,'DENMARK TRACK- Application filed September 22, 1928, Serial No. 307,665, and in Denmark Mayl29, 1928.

In ordinary railway track constructions the vulnerable points are the rail joints,i. e. the points where the fish-plates are securedto the rails. Besides being expensive in themselves the rail oints increase the cost of maintenance, shorten the life of the track, increase the necessary tractive power and produce destructive effects upon the rolling stock. It has been suggested to avoid the use of rail joints entirely by welding the rail ends, and no doubt enormous amounts of money would be saved if this arrangement could once be adopted. That it has not yet been adopted is due to the fact that the latent rigidity of the track has not been great enough to prevent warpin of the track in consequence of the stresses of the rails owing to increase of te1nperature.

In a track construction according to the present invention the desired latent rigidity is obtained by arranging lengthwise of the track, on the lower side of the sleepers and in fixed connection therewith, one or more bodies having vertical surfaces, such as angle iron, rails or the like. The saidbodies, being sunk into the ballast compressed by tamping of the sleepers, will serve the purpose of increasing to a high degree the rigidity of the track.

In the accompanying drawings,

Figs. 1 and 2 are vertical sections through two different track constructions of the above mentioned kind.

Fig. 3 is a longitudinal section on the line IH-III in Fig. 1, and

Figs. 4.- and 5 show details.

Referring now to the drawing, 1 is the ballast and 2 the sleepers on which the rails 3 are fixed. In the embodiment of the invention shown in Fig. 1, a stiffening or strengthening body 4; sunk into the ballast lengthwise of the track is secured to the lower side of the sleepers between the rails 3, the said body preferably consisting of a discarded rail or piece of rail.

The sleepers being often or" varying thickness, it is preferred to restrict the length of the rails 1 so that they will extend under only two juxtaposed sleepers, as shown in Fig. 3. The rails 4 need not be placed in alignment;

they may as well be laterally displaced in relation to one another.

The rails 4 are secured to the sleepers Q in any suitable way, for instance, as shown in Figs. 4: and 5, by pairs of hookshaped links 5 embracing the bases of the rails and having ears for connecting the said links to eye bolts 6 inserted through openings in vplates 7 on the upper surface otthe sleeper, which eye bolts can be screwed tight by means of nuts 8. One of the hookshaped links 5 of the pair may, however, be in one piece with the eye bolt and have an ear for engagement with the other link of the pair. The plates 2, as represented, project at their ends beyond the opposite side edges of the sleepers.

In the embodiment of the invention shown in Fig. 2, two rails 41- are used and applied outside the track rails 3. As will appear from a comparison of Fig. 1 with Fig. 2, the length of the sleepers can be restricted by this arrangement and a good deal of expensive ballast can be saved, and it is also a matter of advantage that the rails 4 can be applied below the track without stopping the traflic.

I 'While' tracks of the heretofore-used construction, in order to be laterally displaced,

must merely push away the ballast at the ends of thesleepers 2, a track according to Fig. 1 must drag the rail pieces 4- through the ballast 1 which, by tamping of the sleepers, has been very much compressed.

It can be demonstrated that the lateral rigidity of the section according to Fig. 1 has from 3 to 4 times, and that of the section according to F ig. 2 has 4 times, the rigidity of a track of ordinary construction.

This increase in lateral rigidity will suffice to resist the tendency of warping arising from a heating of the track to the extent of 50 or of 5060 (1, respectively, from the stressless condition of the rails.

I claim as my invention:

1. In a track for ballasted road beds, the combination, with a pair of spaced, parallel track rails, and a sleeper supported on the ballast transversely of said rails and directly across the upper surface of which the rails pass; of a strengthening body embedded in the ballast below and parallel with said rails,

with the lower surface of the sleeper resting thereon; a plate supported directly on the said upper surface of the sleeper immediately above the strengthening body and projecting at its ends beyond the opposite side faces thereof; and a connectionbetween each end of said plate and the strengthening body to prevent displacement of the latter, such connection comprising a depending eye bolt attached to the plate end, and hook-shaped link means straddling the base of said body and connected to the eye bolt.

2. In a track for ballasted road beds, the combination, with a pair of spaced, parallel track rails, and a sleeper supported on the ballast transversely of said rails and directly across the upper surface of which the rails pass; of an inverted strengthening rail embedded in the ballast below and parallel with 0 said track rails, with the lower surface of the sleeper resting directly thereon; a plate supported directly on the said upper surface of the sleeper immediately above the strengthening rail and projecting at its ends beyond the opposite side faces thereof; and

V a connection between each end of'said plate and the strengthening rail to prevent dis" placement of the latter, such connection comprising a depending eye bolt attached to the plate end, and hook-shaped link means straddling the base of the strengthening rail and connected to the eye bolt.

3. A track, according to claim 2, in which two spaced, parallel strengthening rails are 3 used in conjunction with the sleeper, said rails being secured to the sleeper outside the track rails to permit them to be applied to the track without stopping the traffic.

4. In a track for balla'sted road beds, the

40 combination, with a pair of spaced, parallel traclrrails, and a sleeper supported on the ballast transversely of said rails and directly across the upper surface of which therails pass; of a strengthening body embedded in the ballast below and parallel with said rails, with the upper surface of the sleeper resting thereon; and a connection between the sleeper and the strengthening body to prevent displacement of the latter.

5. A track according to claim 4, in which the connection between the embedded body and the sleeper is releasable from above the sleeper.

In testimony whereof I affix my signature.

STEFFEN VVILDT.

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