US1453776A - Railroad crossing - Google Patents

Description

May 1, 1923. 1,453,776

, G. T. WISWELL RAILROAD CROSSING Filed Feb. 14. 1923 2 ts-Sheet 1 Patented May 1, 1923.

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GEORGE WISWELL, or EVANSTGN, ILLINOIS, nssreivon To THE WIswELL IMPROVED RAILROAD CROSSING COMPAHY, OF CHICAGO, ILLITNQIS,A CORR l PORATION or rumors.

nnrmeoan CROSSING.

Application filed February 14,1923. serial no. m al J l '0 all whom it may concern.

Be it known that I, Gnonon T. lVIswnLL, a citizen of the United 'S tates, residing at Evanston, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Railroad Crossings, of which the following is a specification.

This invention relates to railroad crossing, frogs and the like and is fully described in the following specification as shown in the accompanying drawings, in which- Figure 1 is a plan view of a cast railroad crossing embodying the invention. Figs; 2 and 3 are enlarged sections on the lines 2 respectively of Fig. 1 and Fig. 4 is a view similar to Fig. 2 showing a modified form of crossing of the built-up type.

The form shown in Fig. 1 shows ZtCIOSSiIlg consisting of four castings, A, B, C and D- which are built together in a wellknown manner the means for securing them no-tbeing shown.

This form shows two railroad tracks cross ing each other at right angles, the rails approaching sections A and B are secured thereto, the inner edge of rails being in alignment with the inner edge 10 of the stock rail or main rail 11 of the crossing, in-

side of these discs lie the guard rails 12 with a groove 13 separating the two. At the outer end 13 this groove is quite deep and wide as shown in Fig. 3 while at 13 the groove is shallower and somewhat narrower as shown in Fig. 2. Ledges 14 arealso formed as shown in Fig. 2 which are adapted to engage the sides of the wheel flange 15. These ledges are gradually raised so that as the wheel approaches the point of crossing the next track 16 the flange will ride up on the ledges thereby raising the wheel so that its tread 17 will be raised somewhat above the main rail 11, by this arrangement the bump produced in crossing the groove 16 is very'largely eliminated.

At the same time it will be noted that I between the rails of the track they'are crossing. r

The use of a raised groove for crossing tracks of this kind has been used but this has been found to be unsatisfactory for the reason that the edges of the flanges'of many 1 wheels become nicked or flattened and produce even a greater pound than that due to r the tread of the wheel lying directly on the main rail.' In the cast form I have found that a manganese steel crossing will operate very efliciently over a considerable period of time with very little wear on the ledges 1 1 and will greatly reduce the pounding which is produced by the presentwell known forms of crossings. Y i

In Fig. 1 is shown a form of built-up crossing having a main rail or stockrail 18,

a guard rail 19, and a reinforced rail 20,. all being secured together by means of bolts 21 and nuts 22, a manganese steel filler 23 having a bolt between the stock rail 18 and i the guard rail 19, this filler has a groove 24 which corresponds tothe groove 13 of the other form. Ledges 25 are formed on the sides of the groove which are tapered in the same way as the ledges 14 of the form shown in Fig. 2. Otherwise the construction and operation of the built-up form is substantially' the same as that of the casting form shown in Figs. 1, 2 and 3.

Thus the space betweenthe rails 18 and 19 forms a flangeway'which converges toward the crossing point and guides the wheel flange into the groove 24:. The sides of the flange ride on the ledges 25', thereby protecting the outer edge of the flange from damage. v

It will be apparent that this crossing may be used for other angles other than right angles; an angle as low as 35 has been found to operate satisfactorily. It is also applicable to frogs.

While I have shown and described the two embodiments of my invention it is to'be understood that it is capable of many modi-, fications. Changes therefore in the construction or arrangement may be made which do not depart from the spirit and the scope of the appended claims in which it my intention to cover all the novelty inherent in my invention as broadly as possible in view of the prior art.

lVhat I claim as new and desire to secure by Letters Patent, is,

1. A railroad crossing comprising ;two main rails crossing each other, guide rails inside said main rails and parallel thereto, a groove between each main rail and its guide rail, said groove near its bottom having ledges adapted to contact the sides of the flanges of the Wheels running over the crossing, said grooves being inclined upwardly as the crossing is approached so'as to raise the Wheels clear of the main rails at the point of crossing.

2. A railroad crossing comprising two main rails crossing each other guide rails inside said main rails and parallel thereto,'

a groove between each main rail and its guide rail, said groove near its bottom having ledges adapted to contact the sides of the flanges of the Wheels running over the crossing, said grooves being inclined upwardly as the crossing is approached so as to raise the Wheels clear of the main rails at the point of crossing, the main rails of each track converging toward the point of crossing.

GEORGE T; WISWELL.

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