US793555A - Railway-frog. - Google Patents

Description

RAILWAY F APPLICATION FILED AP ,1905.

2 SHEETS-SHEET l.

No. 793,555. PATENTED JUNE 27. 1905.

I G. W. WHITEMAN.

RAILWAY FROG.

APPLICATION FILED APR. 29,1905.

2 SHEETS-SHEET 2v.

' cutting away the tread and base-anges of ,which my invention is applicable; and Fig. 5

NITED STATES Patented June 27, 1905.

GEORGE W. WHITEMAN, OF PHILADELPHIA, PENNSYLVANIA.

RAILWAY-FROG.

SPECIFICATION forming part of Letters Patent No. 793,555, dated June 27, 1905.

Application filed April 29, 1905. Serial No. 258,049.

3.70 all whom, it may concern: l

Be it known that I, GEORGE W'. WHITEMAN, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented certain Improvements in Railway-Frogs, of which the following is a specilication.

Myrinvention consists of a certain modification of or improvement in the railway-frog for which I obtained Letters Patent of the United States No. 713,547, dated November 11, 1902, the object of my present invention being to prevent the humping of the wingrails to the same extent as in the patented structure and to insure a better bearing of the tread of thel wheel upon the wing-rail when said wheel is traveling at and near the point of the frog.

In the accompanying drawings, Figure 1 is a plan View of an ordinary type of railwayfrog to which my invention is applied. Fig. 2 is an inner side view of one of the guardrails of thefrog. Fig. 3 is a transverse section, on an enlarged scale, on the line t a, Fig. 1. Fig. 4 is a view similar to Fig. 1, but illustrating another construction of frog to is a transverse section, on an enlarged scale, on the line Z) b, Fig. 4.

In Fig. 1 of the drawings, 1 and 2 represent the converging rails of an ordinary frog structure, 3 the point of the same formed by these rails, and I and 5 the wing-rails, these parts being secured together in proper relation to each other by means of transverse bolts and. interposed filling-blocks in the ordinary manner. If the top of the point?) and the tops of the wing-rails 4 and 5, flanking the same, are in the same horizontal plane, the wing-rails will not afford any support for a wheel approaching the point of the frog in the direction of the arrow fc, owing to the fact that the treads of the wheels are beveled, so that when the point of the frog supports the wheel at the throat or close to the liange, where the diameter of the tread is the greatest, the outer portion of the tread, where its diameter is least, is free from contact with the wing-rail. Hence when the wheel leaves the point ofthe frog it drops until the outer the same, with like result of pounding, hammering, and injury to frog-rails and rollingstock. In order to overcome this objection, I in the frog forming the subject of my previous patent raised the wing-rails I and 5 throughout those portions of the same which were adjacent to the point of the frog, the elevation being' to an extent commensurate with the bevel of the wheel-tread. This produced inclinations in each wing-rail, the inclination in advance of the point being in one direction and the inclination in the rear of the point being in the opposite direction, thus resulting in a hump on the wing-rail, which I now eliminate by maintaining said wingrail in a horizontal position for some distance in advance of the rear end of, the same and by cutting away the inner face of each Wingrail, as shown at 6, so as to produce on the inner portion of the tread of each wing-rail a recess for the reception of the tread portion of a wheel traversing the point of the frog. By thus recessing the inner face of each wing-rail I not only render unnecessary the reverse bending of the same, as in the previous frog, but I am enabled to impart to the upper face of the reccssG of each wing-rail such a lateral inclination as will enable it to accord accurately with the bevel ofthe tread of the wheel running upon the same, as shown in Fig. 3, thus providing a more extended bearing f or the tread of the wheel than was provided by the top of lthe tread of the wing-rail in the patented structure.

In applying my invention to that class of frogs which have manganese-steel cheekpieces 7 and 8 inserted in laterally-bent offsets in the wing-rails on each side of the point the recesses 6 will be formed in these IOO the reception of the tread portion of a Wheel traverslng the point, substantially as specie v In testimony whereof Ihave signed my name I5 to this specication in the presence of two subscribing Witnesses.

GEORGE W. WHITEMAN.

Witnesses:

WM. BROWN, J r., WM. E. SI-IUPE.

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