US1225421A - Railroad-crossing. - Google Patents

Description

H. e. ELFBORG. RAILROAD CROSSING.

APPLICATION FILED NOV. 2. I916.

Patented May 8, 1917.

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H. G. ELFBORG. RAILROAD CROSSING.

APPLICATION FILED NOV. 2. I916 Patented May 8, 1917.

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APPLICATION FILED NOV. 2. 1916..

1,235,421 Patented May 8,1917.

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HENRY G. ELFBORG, OF CHICAGO, ILLINOIS, ASSIGNOR TO AMERICAN MANGANESE STEEL COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION 0F MAINE.

RAILROAD-CROSSING.

Application filed November 2, 1916.

To aZZ whom it may concern:

Be it known that I, HENRY G. ELrBone, a citizen of the United States, and resident of Chicago, in the county of Cool: and State of Illinois, have invented certain new and useful Improvements in Railroad-Crossings, of which the following is a specification.

My invention relates to railroad crossings and has particular reference to a novel built-up construction which shall possess the necessary strength and rigidity and which may be constructed economically.

The advantages of a construction such as herein disclosed may be enumerated as follows:

In view of the fact that the crossing is composed of four units and as each unit is composed of two pieces, it will be seen that but two patterns are necessary. F urthermore, these patterns will be very simple. Thus the pattern cost will be practically cut in two.

In the two-piece crossing construction there is always a tendency toward cracking in the throatway, and as such cracks develop it is necessary to discard the crossing- If, however, such a crack appears in the present construction, the faulty section may be removed with relatively small loss.

By reason of the present construction the square joint between the gage line intersections is eliminated.

In the construction here disclosed it is possible to construct the guard and running rails in one piece, and due to this construction and the arrangement of the parts, the joining bolts are not subjected to blows due to side thrusts of the wheel flange. In the present construction the bolts serve the purpose only of holding the parts in proper re lation and are not subjected to severe strains.

The invention will be more readily understood by reference to the accompanying drawings, wherein Figure 1 is a plan view of a crossing such as contemplated by me;

Fig. 2 is an enlarged fragmentary plan view showing the intersection more clearly;

Fig. 3 is a sectional plan View;

Fig. 4 is a fragmentary plan view of the longer section;

Specification of Letters Patent.

Patented May 8, 191?.

Serial No. 129,086.

Fig. is side elevation of the same;

Fig. 6 is a fragmentary plan view of the end of the longer section;

Figs. 7 and 8 show a plan view and side elevation respectively of-the shorter section, and

Figs. 9 and 10 are sectional views on the lines 9-9 and 1010 of Fig. 1, and,

Fig. 11 is a sectional view on the line 11-11 of Fig. 3.

Referring more particularly to the drawings, it will be seen that the crossing is built up of four units, and that each unit is composed of two sections, which I have marked A, B, respectively. The longer section A, as best shown in Figs. 2, l, 5 and 6, has a running rail 10 and a guard rail 11, the running rail being grooved or recessed transversely, as at 12, to provide for the wheel flange of a wheel running on a transverse track. The guard rail 11 is notched, as at 13, to accommodate the square end 1 f of a duplicate section A, a fragmentary plan view of which is shown in Fig. 6. On the side opp0 site the notch 13 the section A is suitably recessed, as at 15 in Fig. 3, to accommodate the end 16 of the shorter member B, as best shown in Fig. 7. The shorter member is also provided with a running rail 17 and a guard rail 18, and is suitably shaped at its outer end portion 19 to facilitate the attachment of a standard railroad rail thereto. All of the members are transversely apertured to accommodate fastening bolts 20, which engage angle fastening straps 21, one of which is located at each of the four corners of each intersection.

It will be seen that as the ends of the members are interlocked and the guard and running rails are integrally formed, there is no undue strain upon the fastening bolts. Furthermore, it will be seen that at each intersection there is one continuous track surface; at one corner or intersection the continuous portion runs in one direction, while at the adjacent intersection the con tinuous member runs in a transverse direction. By reason of this construction the square joint is eliminated at the gage line intersection and a construction is provided which is very easily maintained.

Obviously the construction may be modifled to a certain extent and. such modifications as are within the scope of my claims I consider within the spirit of my invention.

I claim:

1. A crossing, comprising in combination a plurality of pairs of rail extensions, the members of one pair being duplicates of the members of the other pairs composing the crossing, the ends of the members of each pair being out of abutting engagement.

2. A crossing, comprising in combination a plurality of pairs of sections, each pair of sections being complementary, the inner ends of said sections being secured in abutting engagement with a similar transversely-extending section.

3. A crossing unit composed of two members adapted to be disposed in end-to-end relation, an element of a transversely-extending cooperating unit spacing apart the ends of said members, tour duplicate units being suilicient to complete a crossing, substantially as described.

l. A railroad crossing, comprising in combination four duplicate crossing units suitably joined, each unit being composed of two members, one of the members of each of the four units passing transversely through one track of the crossing and abutting the other trackof said crossing.

5. A. railroad crossing, comprising in combination four duplicate crossing units suitably joined, each unit being composed of two members, one member of each unit being of a length greater than the distance between adjacent tracks, one end of each of said members abutting a side of a duplicate member at a point intermediate the ends of the latter, substantially as described.

6. A railroad crossing, comprising in combination four duplicate crossing units suitably joined, each unit being composed of two members, one member of each unit being of a length greater than the distance between adjacent tracks, one end of each of said members abutting a side of a duplicate member at a point intermediate the ends of the latter, the second member of each unit being complementary to said first member and abutting a transversely-extending member to form a continuation of said first member, substantially as described.

-7. A railroad crossing composed of "four units, each unit being composed of a plurality of complementary sections, one section extending through one track rail and abutting another, and another section abutting said last-named track rail.

8. A railroad crossing composed of four units, each unit being composed of a plurality of complementary sections, one section extending between adjacent tracks and to a point outside of the tracks, the inner end of such section abutting the side of a duplicate section, and a complementary section abuttin the opposite side of said duplicate section and forming a continuation of said first section.

Signed at Chicago, Illinois, this 28th day of October, 1916.

HENRY G. ELFBORG. Witnesses:

M. B. MYERS, EARL A. LERNER.

Copies of this patent may be obtained for five cents each, .by addressing the Commissioner of Patents, Washington, I). G.

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