US1564005A - Joint for railway-rail ends - Google Patents

Description

Dec. 1 1925 B. LESLIE JOINT FOR RAILWAY RAIL ENDS Filed Feb. 15'. 1924 wir Patented 1, 1925.

`Unrnnisraras earsnr JOINT FOR RALVA/FRAIL ENDSQ Application led February 13, 19%. Serial No. 692,535.

To all fr0/iomz't may 00a/cera.:

Pie it l-:nown that l, BRADFORD LESLIE, a subjectof the Kinn' of Great Britaim residinn' in London. England. have invented a certain new and useful Improved Joint for Railway-Bail Ends. of which the following is a specification.

This invention relates to an improved joint for connecting and supporting the square ends of railway rails and is adaptable to all types of such rails.

The object of the present invention is to provide an inflexible support for the rail ends at eachnjoint in order to preserve theiil running surfaces in the same plane. in substitntion for the ordinary fish-joint and other joints which have been found to rest upon sleeper area insufficient to compensate for the non-continuity of the rails, resulting in low joints which produce wear and concussion.

It has been proposed to provide a centra transverse sleeper at the joint between the two transverse sleepers on either side of the joint and in a known construction intended to supersede the fish-joint the rail ends are carried upon a bearing plate supported upon the aforesaid sleepers and said rail ends fastened to the bearing' plate by means of clamping plates.-

Accordinnj to the present invention the defects ofthe fish-joint and other joints are remedied bv the provision of an inflexible sleeper platform consisting' of a joint block under each rail joint rigidly connected with additional supporting' blocks on either side, which blocks may be transverse sleepers extending' under both rails. the platform so formed having' bearing' surface on the ballast adequate to compensate' for the noncontinuity of the rails and supporting` the rails normally at the joint upon cast iron chairs (in the case of bull-headed or reversible rails) and upon bearingl plates (in the case of fiat footed rails) carried upon the inflexible sleeper platform.

ln one construction according' to the invention the joint block extends longitudinally between and preferably at the same level as two transverse sleepers one on either side of the joint. and is firmly secured to the sleepers as by means of tongue plates in contipgnous `portions and adjustable tie rods between the two sleepers. In an alternative construction the yinflexible support for the rail ends at eacli joint is afforded by three or more short contiguous transverse sleepers fixed to an iron joist or beam of such a section as to prevent any appreciable deflection under inaztinnun axle load at the joint.

The result is-a jilatform supporting the rail ends normally to the vertical load hai inc; the infiexibility necessary to preserve the running' surfaces of the rail ends in a connnon plane and an effective bearing' surface on the ballast which compensates for the non-continnity of the rails. This bearing); surface about one-thirdD or more, greater than that secured in usual practice.

ln the accompanying,v drawings Fin'. l is a plan View of the improved j oint as adapted to bull-head or reversible rails; Fig'. 2 is a section on the line 2 2 of l; Fig. 3 is a' plan view of the improved joints adapted to rails having` a flat foot or base; and Fig. l is a section on the line le-Ll of Fin'. 3.

Referring' to Fig-gs. 1-4, the inflexible support for the rail ends consists of a short longitudinal sleeper or joint block A conihined with the transverse sleepers B. one on either side of the joint. said longitudinal sleeper or joint block extending,l between and preferably at the saine level as the transverse sleepers B and being),` rigidly connected therewith by means of tongue plates L or in any other suitable manner.

The longitudinal sleeper or joint block A is held in firnfi Contact with thc transverse slee ers by means of bolts which are adapted to be screwed up tightly and prevent movement between fhc sleepers. The longitudinal sleeper or joint block would be preferably wider than the transverse sleepers and arranged so that the whole platform is readily accessible from all sides and constitutes an inflexible support for the rail ends.

ln the case of bull-head or reversible rails. see l and 9i. the rails D are carried in cast iron joint chairs E fastened to the longitudinal sleeper A. by means of screws M, the bases of which chairs are wide enough to afford-supportto the rails. The jaws of the joint chairs may be increased in width if desired.

Hard wood or other suitable wedges F may be interposed between the jaws of the chairs and the rails lto hold them in p0sition. If holding; wedges are used, when adjustment has been made to permit of expansion or contraction of the rails, these wedges may be secured by pins passing through holes in the key jaw G of the chair, and in the wedges to prevent the latter from working loose. This latter device may be used on the intern'iediate sleepers, and if the wedges are hard-driven before pinning at two or three sleepers on either' side of the centre of the rail, they will prevent creep of the rails. The use of suoli joint chairs dispenses with the necessity for holes in the rails.

In the case of rails having a flat base or foot, see Figs. 8 and l, holes in the rails are also unnecessary. The rail ends l) are supported normally upon a metal bearing plate H of suitable thickness, which .is fastened directly to the longitudinal sleeper or joint block A by means of screws I and dog-spikes J which pass through holes in the bearing plate, each of said screws being provided with a collar K which is adapted to overlap the rail flange and hold the rail in contact with the bearing plate.

The transverse sleepers B may also have bearing plates H interposed betvreen them and the rails, or these latter bearing plates may be formed integral with the aforesaid longitudinal bearing plate.

rIhe bearing plates I-I are preferably rolled to give the usual cant to the rails, as shown in Fig. 4, thereby dispensing` with the need for adzing the transverse sleepers and, in the case of a joint chair, the base of the chair is cast at the inclination required to give the cant.

Having thus described the nature of the said invention and the best means I know of carrying the saine into practical effect, I claim 1. An infiexible support for the ends of railway rails designed to preserve their' running surfaces in the same plane without the use of fishplates, comprising` a sleeper' platform consisting of a joint block, additional supporting blocks on either side of said joint block, means rigidly connecting the joint block with the adjacent supporting blocks to maintain the surfaces thereof at the saine level, said means including tie bolts passing through said supporting blocks, and a bearing plate secured centrally upon the said joint block and supporting the abutting ends of the rails at their junction and for a distance on either side thereof.

2. An inflexible support for the ends of railway rails, comprising a joint block for disposition longitudinally under a rail joint, transverse sleepers, one on either side of the joint block, having their surfaces at the saine level as that of the joint block, means connecting said joint block and said transverse sleepers to maintain the surfaces at the same level, and tie bolts connecting the transverse sleepers and operating to press their sides firmly against the ends of the joint block.

3. An inflexible support for the ends of railway rails, comprising a sleeper platform for a rail joint consisting of a joint block to be placed under a rail joint, additional supporting blocks on either side. of said joint block, niortised connections between the joint block and the additional supporting blocks and tie bolts passing through the said additional supporting blocks.

t. An inflexible support for the ends of railway rails, comprising a sleeper platform for supporting a rail joint consisting of a joint block to be placed under a rail joint, two transverse sleepers, one on either side 0f the joint block and at the same level therewith, tongue plates connecting the joint block with the adjacent sleepers, and tie bolts passing through the said sleepers.

In testimony whereof I have signed my name to this specification.

BRADFORD LESLIE.

Images