US137085A

US137085A - Improvement in railroad frogs

Info

Publication number: US137085A
Authority: US
Publication date: 1873-03-25
Anticipated expiration: 1890-03-25

Description

UNITED STATES PATENT OFFICE.

JOHN II. LAKEY, OF TURNER, AssIGNoE To GEORGE w. vBILLINGs, OF

` CHICAGO, ILLINOIS.

IMPROVEMENT IN RAILROAD FR'OGS.

Specification forming part of Letters Patent No. 137,085, dated March 2F, 1873.

,To all 'whom 'it may concern:

Be it known thatl, JOHN H. LAKEY, o' Turner, in the county of Du Page and State of I1- linois, have invented a certain new and Improved Railway Frog; and I do hereby declare that the following is a full, clear, and complete description of the same, reference being had to the accompanying drawing makin g part of this specification.

Figure l is a plan view of the frog. Fig. 2 is a side view. Fig. 3 is an end view.

Like letters of reference refer to like parts in the several views.

The nature of this invention relates to a railway frog 5 and the object thereof is to secure the two ends of the rails together of which the frog is constructed so that they cannot become separated-#an event to which all frogs of this class are 1iable,but which defect is removed when the rails are secured to each other in the Ina-nner as follows.

In the drawing, A represents the ties on which the rails B C are laid and thereto secured. The ends of said rails are iitted to each other, forming a tapering point, D, and are secured thus by flat keys a, Fig.2, inserted in corresponding holes cut through the web of the two rails.

The ordinary wayot' securing the rails together is by the use of round iron bolts. These are very liable to be cut OE by the edges of the boltholes in consequence of the vertical move` ment of the rails caused by the passing train, which thereby act like a pair of shears on the bolts. To prevent this cutting the bolts I use in place thereof the fiat key c referred to, the advantage of which is that it presents a larger bearing-surface to the vertical movement ot' the rail than a bolt; hence such movement is partially prevented, and the keys remain uncut or uninjured in consequence of their broad dat surface.

Claim.

What I claim as my invention, and desire to secure by LettersPatent, is

The broad iiat key or keys, as above described, in combination with the rails B C ofl a railway frog, substantially in the manner as and for the purpose set-forth.

Witnesses: JOHN H. LAKEY.

J CHN WEST, GEo. R. ALLIsoN.