US1697844A - Joint for railroad tracks - Google Patents

Description

Jim. 8, 1929. 1,697,844

' A. DEV ARMAS I JOINT FOR RAILROAD TRACKS Filed Feb. 5 1926 2 Sheets-Sheet 1 INVENTOR. H. de firm ATTORNEY.

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Jan. 8, 1929.

A. DE'ARMAS JOINT FOR RAILROAD TRACKS Filed Feb. 5 1926 2 Sheets-Sheet 2 IN VEN TOR. fl cZe firmq zm w 5&4

A TTORNEY.

Patented Jan. 8, 1929.

EYE

a 'p g JOINT FOR RAILROAD TRACKS.

Application filed February 5, 1926. Serial No. 86,290.

This invention relates to joints for railroad tracks which are known in the art by couplings or fish-plates and its principal object is to avoid the high cost of maintenance of the railroad tracks which makes the railroad companies expend enormous sums of money in salaries for the inspection of said tracks, as well as on new material, to be replaced.

Another object of the invention is to avoid the shock of the Wheels with the border of the rail, when the trucks pass over the joint of two of them, as this shock is uncomfortable for the passengers and at the same time wears 1' out the wheels of the trains or vehicle which one on the inner part and one on the outer part of the rail and held in place by means of screws and nuts that hold the rail in a rigid position. It has been observed, notwithstanding, that owing to the expansion or contraction of the material of which the rail is made, caused by climatological changes the rails separate one from the other in some instances, more than half of an inch, and that when this contraction or expansion occurs, if a train or vehicle runs over the track it receives a shock or rough movement which is disagreeable to the passengers and at the same time wears out the running material owing to the frequency of the shocks as the material of which the wheels are made loses its circular form thus causing the inconvenience above mentioned.

In the accompanying drawing wherein an approved embodiment of the invention is illustrated,

Fig. 1 is a plan View of portions of the abutting ends of two rails showing the invention applied to use.

Fig. 2 is a view similar to Fig. 1 showing the gap produced between the rail ends as the result of contraction of the rails.

Fig. 8 is a fragmentary plan on a reduced scale of a portion of a railway track showing a pair of car wheels in full and dotted line positions thereon.

Fig. l-is a perspective View of the bridging Fig. 6 is a transverse section onthe line 1 6-43 of Fig. 1, and

Figs. 7 and 8 are sectional views similar to Fig. 6 showing modifications ofthe invention, each of the rails constituting the track 7 being indicated generally by the numeral 1 and, as usual, is constituted by the base 2, the web 3 and a head 4 on which the wheels 5 of the rolling stock are supported. As usual, the rails are spiked to the ties and the adjacent ends of the rails are coupled together at the outside of the track by a fish-plate 6 having apertures 12 therein and provided along its upper edge with a shoulder 8 underlying the heads of the adjacent rail ends. The medial or web portion 9 of the fish-plate is provided with a channel or groove 10 presented to the webs of the rails and is turned laterally at its lower edge for engagement with the bases of the rails. The usual bolts 11 and nuts 14 are employed for securing the fish-plate in position on the rail as will be hereinafter more fully set forth, said bolts passing through the apertures 12 in the fishplate and corresponding apertures 13 in the webs of the rails.

It is well known that incident to contraction of the track rails due to temporary changes in temperature'the width of the gap between the rail ends increases to an extent that during the passage of the wheels of a car thereover a noticeable jolting of the wheels occurs and also the rail ends are worn away. As stated, it is the object of the present invention to provide a continuous tread surface for the car wheel across the gap between the rail ends, and to this end I provide the special fish-plate or bridging member indicated at 15. v

The bridging piece consists of a body provided along its upper portion with a projection 16 which is curved along that portion which is presented to the rail ends, gradually undercut form is of slightly different shape from the forms illustrated in Figs. 6 and 7. The rails 1 areprovided with longitudinal ribs 18 which fit into a corresponding groove.

provided in the bridge piece or member 15 for limiting the relative vertical displacement of the bridge member with respect to the rail ends. The body of the bridging member is provided with apertures 12? toaccommodate the bolts 11 which, as above stated,v also pass through; the webs, of the rails and the fish-plate 6.

From the foregoing itris evident that the tread} portion of, the bridgingmember 15 extending across the gap between-the rail ends presents a continuous tread surface for the wheels of the rolling stock, and thus avoids the-:jolti-ng and undesirable noise which ordinarily accompanies the passage of the wheels across the joint between the rail. ends.

It isevident that on the basic principles of this invention, many alterations and variations can be made without altering the; spirit of the same and; for this reason I do. not restrict myself to what I have described hereto'fore, and I desire that the patent protect what I state in the following claim.

WVhat I claim. is:

In a rail joint, adjacent rail ends, each in cluding-a head, Web and base, approximately half of the heads of the adjacent rail ends being cut away, a bridging member racially abutting the Websotthe; rail ends and pro- 7 vidfed with a, laterally and obliquelyunder cut projection occupying thecorrespondingly shaped. cut away portions of the rail ends,

the railshaving ribs thereon and the bridg ing member; having groove-therein receiving-said ribs and means securing the bridg-i mg member to the rail ends.

In testimony WhereofI my signature.

ALBERTO DE ARMAS'.

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