US312801A - Railway-frog - Google Patents

Description

N. W. BOYD.

RAILWAY FROG? (No Model.)

Patented Feb. 24,

. INVBNTOR ATTORNEYS.

WITNESSES N. PETERS. PM a Lun UNirEn STATES ATENT OFFICE.

NATHANIEL W. BOYD, OF STEELTON, PENNSYLVANIA.

RAI LWAY-FROG.

EJPECIFICATION forming part of Letters Patent No. 312,801, dated February 24:, 1885.

(No model.)

To all whom it may concern.-

Be it known that I, NATHANIEL W. BOYD, ofSteelton, in the county of Dauphin and State of Pennsylvania, have invented a new and Improved Railway-Frog, of which the'following holding the parts of the frog together and in proper position.

The invention also consists of the construction, arrangement, and combination of parts, all as hereinafter described and claimed.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in' all the figures.

Figure l is a plan view of my new and improved frog. Fig. 2 is a transverse sectional elevation of the same on the line x m of Fig. 1. Fig. 3 is a plan view of a spring-rail frog made in accordance with my invention. Fig. 4 is an enlarged plan View of the key end of one of the key-bolts, and Fig. 5 is a perspective view of one of the keys.

A B represent the side rails of the frog.

0 represents one of the main rails of the track, or a continuation thereof; D, one of the main rails of the siding.

E E and E E represent the throat-blocks.

F represents the key-bolts, and G the keys.

The rails A, B, O, and D are all of the ordinary T form, and are separated from one another. The rail 0 is made pointed, as shown at a, and is notched at one side with the notch b, which is undercut, as shown, and the siding-rail D is scarfed off, as shown at c, to fit against the rail 0, and it is beveled at its end, as at c, to fit in the undercut notch b, as shown clearly in the drawings,.and these rails O D are riveted together by the rivets d, and thus form the tongue of the frog. The rails A B are bent or curved, as shown, and are bolted together and to the rails O D by the key-bolts F, the throat or space blocks E E being placed between them to form the flangeways or throats of the frog. The plain end of each of the key-bolts F may be made secure by riveting hot in the countersunk blocks or brackets H, as shown. The key end f of each key-bolt F is by preference made square, with the flat keyway ff made therein to receive the flat key G; but they might be made any other desired shape, the key always being made to correspond in shape to the shape of the keyway, and in the bracket I, which is placed upon the head f of the key-bolt, is formed the corresponding keyway or groove j, which is about one-eighth of an inch in depth, and receives the inner edge of the key G, as shown' clearly in Fig. 2.

The key G may be made of iron,brass,steel, or any other metal, and it should be made of a plate of metal one-half the thickness of the desired thickness of the key, and this plate, to form the key, should be doubled or folded in the center of its length flat upon itself, and then tapered at its edges to the desired angle for causing it to exert sufficient draft when driven in the keyway of the key-bolt to draw the parts of the frog securely and solidly together. The throat-blocks E E are held in place in the throat or flangeways of the frog by the rear key-bolt F and the heads of the central rivet, d, as will be understood from Fig. 1, and the throat-blocks E E are held from forward movement by the forward key-bolt F, and from rearward movement by the offsets e 6, made in the adjacent edges of said blocks, which offsets reach over the pointed forward end of the rail C, as shown clearly in said figure.

In the form of frog shown in Fig. 3 the rear throat-block E is held in place by the rearkeybolt F and rear rivet, d, while the block E is held in place by the forward key-bolt F and the hook-shaped keeper J, which is held in place by the key-bolt, and reaches around the forward pointed end of the rail C and forms a small abutment or stop to prevent the forward movement of the said block E, as will be readily understood from the drawings.

In building up the frog the keys G will be driven into the key-bolts F as far as possible, which will draw the parts of the frog together, and then-the open ends of the keys will be spread apart with a chisel or otherwise to prevent thekeys from receding orbecoming loose, and when the frog from use and wear becomes loose the track-men can force the keys G with a hammer and spread the keys, as before, and thus take up the wear and keep the frog always in good order.

By making the frog of T-rail iron it will be seen that the frog will be the same height throughout as an ordinary railroad-rail, and can thus be placed anywhere inthe track without cutting away the cross-ties, and by male ing the frog of separate parts and bolting them together it will be seen that the frog cannot only be adjusted easily to take up the wear, but that it possesses a degree of flexibility which is very desirable. Besides, the frog is strong, cheap, durable, and practical, and can be made with comparatively little labor.

I am aware that spacing-blocks have been notched to receive the points of the rails, and therefore do not claim such invention.

Having thus described my invention, whatI claim as new, and desire to secure by Letters Patent, is-

1. The combination, with the rails G D, pointed and bolted or riveted together, of the space-blocks E E, side rails, A B, and bolts F,

the blocks E beingin front of the rear bolt and the blocks E in rear of the front bolt, substantially as and for the purposes set forth.

2. In a railway-frog, the separate blocks E, held in place by one of the bolts F and one of the rivets d, substantially as described.

3. The blocks E, formed with the offsets e, for engaging with the pointed end of the rail 0, 5 substantially as and for the purposes set forth.

4. In a frog, the combination, with the rails thereof and the bolts F, of the blocks H, having countersunk openings, in which one end of the bolts are secured, substantially as and for the purposes set forth.

5. In a frog, the key-bolts F, having key G, in combination with the brackets I, substantially as and for the purposes set forth.

6. In a frog, the key-bolts F, provided with the split keys G, in combination with t-herails ol' the frog, space-blocks E E, and the blocks H I, placed at the outside of the side rails, substantially as described.

NATHANIEL W. BOYD.

Witnesses:

CLAY S'rnvnns, \VlLLis 0. LEE.

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