US1655770A - Railway-track construction - Google Patents

Description

Jan. '10, 1928. 1,655,770

N. R. LOVE RAILWAY TRACK CONSTRUCTION Fi led Dec. 29. 1925 2 Sheets-Sheet 1 Jan. 10, 1928.

N. R. LOVE RAILWAY TRACK'CONSTRUCTION 2 Sheets-Sheet .2

Filed Dec. 29. 1925 e- 0'1. a ra Lore.

. r A INVENTOR. Q Mason Patented Jan. 10, 1928.

UNITED STATES NELSON R. LOVE. OF DENVER, COLORADO.

RAILWAY-TRACK CONSTRUCTION.

Application filed December 29, 1925.

This invention relates to railway track construction and more particularly to the construct-ion of tracks of street railway systems in which the rails are supported on metal ties and rigid foundations.

It is an object of the invention to provide in a railway track of the above described character, means for the resilient support of the rails so that they may yield in a vertical direction for the purpose of reducing the noise, shocks and vibration incident to the passage of cars along the track.

A further object of the invention is to permit the rails of a street railway track to ield in a vertical direction by the provision oi a resilient support, without materia change in their gauge or vertical position, andstill another object is to include in a street railway in which the rails are yieldingly supported, cushioning means between the rails and a rigid paving structure in which the track is laid.

lVith the above and other objects in view, my invention consists in the constructions arrangement and combinations of parts illustrated in the accompanying drawin'" the several views of which like parts are similarly designated and in which:

Figure l representsa plan view of a ooze tion of a railway track constructed in accord ance wit the present invention, showing the material in which the track is laid, in horizontal section,

Figure 2, a longitudinal section through 1'. one of the rails ol the track taken on the line 2--2 liigurc 1,

Figure 3, a cross section of the track through one of the ties upon which the rails are supported, taken on the line 3*?) ure 1,

Figure l, a cross-section ot the track between the ties, along the line Figure 1 Figure 5, a sectional view similar to that of Figure l, illustrating the arrangement of the cushioning means included in the invention, in tracks laid in partially rigid pavements, 7

Figure 6, a plan view of a portion of a railway track, showing the application of the invention to railways in which the ties supporting the rails are coupled in pure,

Figure 7, a transverse sectiontak'en in two different planes indicated by the line 17 in Figure 6, and

or M) Serial No. 78,177.

F igure 8, a vertical section longitudinally of the track illustrated in Figure 6, taken along the line 8-8.

Referring first to Figures 1 to 3 ot the drawings, the rails 5 of the railway track are supported on cross ties 6 preferably composed of metal bars of chaimehsection. The middle portions 01' the ties between the rails, are rigidly supported on a foundation bed i usually made of concrete, while the outer portions of the ties beneath and at the out side of the rails are laid upon cushions 8 of an elastic and preferably plastic material, as for example, asphalt or an asphaltic compound.

Although the cushions beneath the ties are the principal factor in attaining the ob ject of the invention, it is desirable that the cushioning material be extended to embrace the sides of the ties beneath the rail as best shown at 9 in Figures 2 and It will be apparent that by the construction so far described, the outer portions or the ties, upon which the rails are fastened, are adapted to hex in a vertical direction relative to the middle port-ions of the same which are rigidly anchored on the foundation.

lVhen by the passage of loads along the track, the rails are subjected to downward stress, the ties perform the function of yielding supports, in a cantilever manner, to absorb and deaden the vibration and shocks due to the movement of the load and reduce the noise of travel. The rails are at the same time maintained at the proper gauge, and after the load has passed, they are rcturned to their original elevation by the elastic properties of the ties and the cushions on which their ei'id-portions are supported. 7

The cushioning material at the sides of the ties, moreover, prevents the shocks and vibrations from being communicated to the foundation of the track or the pavement in which the track is laid, and at the same time provides for the free up and downward motion of the end-portions of the ties under the stress of passing loads.

In order to further absorb and deaden the detrimental stress to which the track is subjected in the operation of the railway, the rails are supported between the ties upon cushions 10 or" elastic material laid on the foundation structure, the said cushions being for convenience in construction formed in one mass with the resilient material in which the end-portions of the ties are enveloped, as clearly indicated in Figure 2 of the drawings.

When, as in the form of the invention illustrated in Figures 3 and l, the paving 12 of the street or roadway on which the track is laid, is composed of a rigid material such as concrete, stone or brick, cushions 13 of resilient material are interposed between the sides of the rails and the paving so that none of the jars and vibrations to which the rails are subjected are directly communicated to the relatively fixed and rigid substances.

In Figure 5 has been, shown a road construction in which only the space between the rails is paved with concrete or other rigid material, and the road surfaces at the outside of the track are either left in their natural condition or paved with a yieldable material 14 such as asphalt.

It is obvious that in this instance, the cushions on the outer sides of the rails may be omitted, and it will be equally evident without further illustration, that if the entire roadway between, as well as at the sides of the track, is, either unpaved or paved with a yielding substance, both cushions at opposite sides of the rails may be eliminated.

In the construction illustrated in Figures 6, 7 and 8, the ties 6 are coupled in pairs by means of metal plates 15 and the cushioning supports, which in the first described form of the invention extended under the ends of each tie separate from the others, are now extended to encompass also the coupling plates of the ties as shown at 8.

Other modifications, depending mostly on different characteristics of the tracks to which the invention is applied and the na ture of the roadways on which the tracks are laid, may be resorted to without departing from the spirit of the invention.

What I claim and desire to secure by Letters Patent is:

1. In railway track construction, the c01nbination with the rails; of a railway track, of a foundation for the track, cross-ties having their middle portions between the rails rigidly supported on'the foundation, and cushions of elastic material enveloping the end-portions of the ties, on which the rails are supported.

2. In railway track construction, the combination with the rails of a railway track, of a foundation for the track, cross-ties having their middle portions between the rails rigidly supported on the foundation, resilient cushions beneath the end-portions of the ties, on which the rails are supported, and resilient cushions between the sides ofthe ties and the foundation.

bination with the rails of a railway track, of a foundation for the track, cross-ties having their middle portions between the rails rigidly supported on the foundation, cushions of elastic material enveloping the endportions of the ties, on which the rails are supported, and cushions of elastic material beneath the rails, between the ties, formed in a mass with those in which the endportions of the ties are enveloped.

4. In railway track construction, the combination with the rails of a railway track, of a rigid foundation for the track, a rigid paving between the rails, cross-ties supported upon the foundation, between the rails, resilient cushions beneath the end-portions of the ties, on which the rails are supported, resilient cushions beneath the rails between the ties, and resilient cushions between the sides of the rails and the paving.

5. In railway track construction, the combination with the rails of arailway track, of a rigid foundation for the track, a rigid paving between and at opposite sides of the rails, cross-ties supported upon the foundation, between the rails, resilient cushions beneath the end-portions of the ties, on which the rails are supported, resilient cushions beneath the rails between the ties, and resilient cushions between the sides of the rails and iii the paving.

6. In railway track construction, the combination with the rails of a railway track, of a rigid foundation for the track, crossties connected at their ends, and supported at their middle portions between the rails, on the foundation, and resilient cushions beneath the end portions of the ties and their connections.

7 In railway track construction, the combination with'the rails of a. railway track, of a rigid foundation for the track, crossties supported at their middle portions between the rails, on the foundation, plates connecting the ends of the cross-ties in pairs, and resilient cushions beneath the end portions of the rails and the plates.

8. In railway track construction, the combination with the rails of a railway track, of a rigid foundation for the track, crosstiesconnected at their ends in pairs, and supported at their middle portions between the rails, on the foundation, and resilient cushions beneath the end-portions of the ties and their connections.

9. In railway track construction, the combination with the rails of a railway track, of a rigid foundation for the track, crossties connected at their ends in pairs, and supported at their middle portions between the rails, on the foundation, resilient cushions beneath the end-portions of the ties and their connections, and resilient cushions beneath the rails between the pairs of connected ties. 3. In' railway track construction, the com- ]O. In railway track construction, the

combination With the rails of arailway track, of a rigid foundation for the track, cross-ties connected at their ends, and supported at their middle portions between the rails, on the foundation, cushions of elastic material beneath the end-portions of the ties and their connections, and cushions of elastic material beneath the rails between the ties.

formed in a mass with the first mentioned cushions.

NELSON R. LOVE.

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