US1636373A - Railroad frog - Google Patents

Description

L. M. LEEDO M RAILROAD FROG Filed Oct. 4, 192a INVENTOR 58- Patented July 19, 1927.

UNITED STATES LAURIEM. LEEDOM, OF TRENTON; NEW JERSEY.

RAILROAD FROG.

Application filed October 4, 1926. Serial No. 139,455.

The object of this invention is to provide a railroad frog of novel construction which when in service will not require the presence of the usual guard rails to ensure the passage of the flanges of the wheels of cars and engines on the proper. sides of the point portion of the frog as such wheels pass over the frog from the wing rails toward the heel of the frogithereby saving the time and expense incident to the installation and maintenance of the guard rails.

The invention resides in the novel con struction and relative arrangement of the parts of the frog as will be hereinafter described and claimed.

In the accompanying drawings, illustrating the invention,

Figure 1 is a plan of a railroad frog constructed in accordance with my invention.

Figure 2 is a transverse section of the frog on line 22 of Fig. 1.

In the drawings, I have illustrated the invention in a frog of the hard metal center type wherein 3 designates the hard metal center, 4'and 5 the wing rails and 6 and 7 the stock rails.

The hard metal center 3 is embraced by the wing rails 4 and 5 which are secured thereto in the usual, well known manner, and it has formed thereon the point portion 8 of the frog and the lateral tread portions 9 and 10 on the respective sides of the frog throat 11 and forming continuations of the heads or tread portions of the wing rails 4 and 5. The stock rails 6 and 7 are secured to the respective sides of the hard metal center 3 and form continuations of the point portion 8 extending from the heel end thereof.

The sides 12 and 13 of the heads of the wing rail 4 and the stock rail 7 are alined with each other on the gauge line 14 at one side of a railroad track. and face the way traversed by the flanges of the wheels passing over the rails 4 and 7; and the sides15 and 16 of the wing rail 5 and the stock rail 6 are alined with each other on the gauge line 17 at one side of another railroad track, and face the way traversed by the flanges of wheels passing over the rails 5 and 6.

When herein I refer to a gauge lineI mean one of two parallel lines which define the normal distance between the inner or wheel-flange engaging sides of the heads of two parallel track rails; and when herein I describe a part as being located out wardly of a gauge'line, I mean on that side thereof which is outwardly of the space between it and its companion parallel gauge lino; therefore, outwardly of the gauge line 14 would be above the same, and outwardly of. the gauge line 17 would be below the same. a a r a The point end 18 of the frog point portion 8 is located outwardly of and in spaced relation to each of the two gauge lines 14 and 17, and the sides 19 and 20 of the point portion 8 form continuations of the sides 16 and 13 of the heads of the stock rails 6 and 7' and are located outwardly of and in spaced relation to their respective gauge lines 17 and 14 at the point end 18 of the point portion 8, and the sides 19 and 20 are gradually tapered from the point end 18 of-the point portion 8 toward the heel end of the frog and toward the gauge lines 17 and 14, until they join the same or join the sides 16 and 13 of the heads of the rails 6 and 7 respectively, as shown in Fig. 1.

I have discovered that by constructing a frog with the sides and point end of its point portion related to the gauge lines of the wing rails and stock rails of the frog. as herein shown and described, the guard rails usually employed adjacent to and in: war'dly of the track rails opposite to the respective sides of the frog throat and point portion, to prevent the flanges of wheels passing over the frog from the wing rails 4 and 5 toward the heel of the frog from taking the wrong side of the point portion 8. may be eliminated without incurring any or much danger. particularly in yards and other places where slow movement of traffic prevails: because the path of travel of the wheels along the track rails and over the frog is governed by the parallel rails of the crossing tracks and also by the trucks or other parts of cars or engines maintaining pairs of axles of the wheels in parallel relationship. so that there is l ttle danger of a wheel being swerved out of its normal path sufliciently to throw its flange outside of the gauge line to a greater extent than the space between it and the adjacent side of the point portion at the point end thereof, as the flange crosses the open flangeway between a hard metal extension 9 or 10 of a wing rail 4 or 5 and the point portion 8 during the short distance of travel of the flange between such hard metal extension and the point port-ion where it is ungoverned and unprotected by a guard rail on the opposite side of the track.

I claim as my invent-ion 1. In a railroad fro a point portion, a wing rail spaced from t 1e point portion, and a stock rail forming a continuationrrof one side of the heel end of the point portion, said rails having alined flangeway-facing sides on a gauge line, and said point portion having a side facing said fiangeway and positioned outwardly of and in spaced relation to said gauge line at the point end of said portion. V

2. In a railroad frog, a point portion, a wing rail spaced from the point portion, and a stock rail forming a, continuation of one side of the heel end of the point portion, said rails having alined fiangeway-facing sides on a gauge line, and said point portion having its point end positioned outwardly of and in spaced relation to said gage line and having a side facing said ngewa and gradually tapering from the I point on of said portion to said line.

3. In a railroad frog, a point portion,

ing alined fiangeway-facing sides .on two auge lines which cross each other and pass t e respective sides of the point portion,

and the respective sides of the point end of said portion being positioned outwardly of and in spaced relation to the respective gauge lines which they face.

4. In a railroad frog, a point portion, wing rails spaced from the point portion, and stock rails forming continuations of the heel end of the point portion, said rails having alined fiangeway-facing sides on two gauge lines which cross each other and pass the respective sides of the point portion, and the point end of said ortion being positioned outwardly of an in spaced relation to the respective gaugelines, and the respective sides of said portion being gradually tapered from the point end thereof to their respective gauge lines.

In testimony whereof I afl'ix my signature.

LAURIE M. LEEDOM.

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