US1038439A

US1038439A - Compound-rail construction.

Info

Publication number: US1038439A
Application number: US67378812A
Authority: US
Inventors: Edgar Rhodes
Original assignee: CONTINUOUS RAIL Co
Current assignee: CONTINUOUS RAIL Co
Priority date: 1912-01-27
Filing date: 1912-01-27
Publication date: 1912-09-10
Anticipated expiration: 1929-09-10

Description

E.'RHODES.

COMPOUND RAIL CONSTRUOTIONQ APPLICATION FILED in. 27, 1912.

2 SHEETS-SHEET 1.

1,038,439,- Patented'Sept.10, 1912.

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GOMPOUND RAIL CONSTRUCTION.

APPLICATION H mn JAN. 27, 1912'.

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Patented Sept. 10, 1912.

UNITED s r s PATENT OFFICE.

EDGAR RHODES, OF LEEDS, ENGLAND, ASSIGNOR TO CONTINUOUS RAIL COMPANY, OF WILMINGTON, DELAWARE, 'A CORPORATION OF DELAWARE.

COMPOUND-RAIL CONSTRUCTION. Y

Specification of Letters Patent.

Patented Sept. 10, 1912.

Application filed January 2?, 1912. SeriaINo. 673,788.

' To all whom it may concern:

Be it known that I, EDGAR RHODES, a subject of the King of Great Britain and Ire.

land, residing at The Briars, Scholes, Leeds,

Yorkshire, England, have invented certaincompression strains to firmly force and, maintain said lips agamst the sections ongaged thereby. i

A further object of the invention is to provide a method of uniting the top and base sections of compound rails by bending.

of holdinglips on one of the sections into engagement with a companion section and then compressing the holding lips a suflicient amount so that the outer portions thereof will be elongated in a transverse di' rection and whereby compression strains will be created in the outer portions of said" lips sufficient to force the inner portions of the lips in firm engagement with the portion engaged thereby thus creating eflicient electrical contactivity between the top and base sections.

Another object of the invention is to provide a method of securinLg the top wearing sections of a compound rail in place on the base sections by bending at least a portion of a holding lip on one of the sections into engagement with the companion section and materially reducing the thickness of the metal in the lip and simultaneously therewith elongating the metal in the outer portion of the lip a greater percentage than the metal in the inner lip is elongated.

As showinga specific embodiment of the invention, reference is made to the drawings forming a part hereof. V

Figure 1 shows a perspective view of two parts of base or girder rail sections and a top or wearing section secured to one of the base sections, the girder section at the left being shown .out of its normal position and portlon I of the holding.

the depending flanges on the wearing section between which the last mentioned base section is normally placed being shown, in the position which they occupy prior to being bent to holding position. .Fig. 2 is a transverse view showing a wearing section in place on the top of a base section prior to theholding flanges being bent. Fig. 3 is a transverse view of the part shown in Fig. 2 after the holding flanges have been bent so as to contact with the surfaces engaged thereby. Fig. 4 is a transverse view oit the parts shown in Figs. 2 and 3 after suflicient pressure has been applied to the holding lips" to force the metal in the outer portion; ot said lips transversely and to create compres slon strains 1n said metal. Fig. 5 is a full size cross sectional View partially broken away, showing the lower portion of a top wearing section of a compound rail in place on the top portion of a base section of the rail prior to bending the holding lips. Fig. 6 is a full size cross sectional View partially broken away, showing the position of the compression strains in the lips immediately after theinitial bending of the holding lips into engagement with the base section and prior to transversely elongating the lips. Fig. 7 is a full size cross sectional view partially broken away, showing the position of the permanent compression strains in the holding lips after the completion of'the operatio Like characters designate the same parts throughout the. specification.

The base sections are indicated by A and the top or wearing sections by B. The base sections may be of any well known type and comprise the supporting flanges O,'C, the web E and the flange portions F, F, 10-

catedat the top of the web. The top or wearing section preferably comprises a tread portion G, a groove portion H to receive the flange of a car wheel and depending. flanges or lips L, M which are bent and forced againstthe base section with sufiicient pressure to .form an efiicient electrical contact or'connection' between the top section and the base section.

-In Figs. 2 and 5.the depending flanges L, M are shown in the positions which they occupy after the top section has left the rolling mill. -From an inspection of said figures it will be apparent that the flanges are spaced 2. suflicient distance apart to permill.

wearing section may be seated upon-the base section. g

In Figs. 3 and 6 it will be seen that the flanges L, M have been bent substantially into engagement with the edges f, f of the flanges F, -F. In the position shown in Figs. 2 and 5 there are no substantial strains in the holding lips, as they are in the condition which they-were when they left the rolling Previous to the termination of the operation of bending the lips from the position shown in Figs. 2 and 5 to the position shown in Figs. 3 and 6, compression strains were created in the metal at the upper inner portion of the lips and tension strains in the metal at the outer portion of the lips at the points marked m t and kt These compression strains are indicated in Fig. 6 by the series of'- lines m0 and Z a. From a comparison of Figs. 3 and 4 and also Figs. 6 and 7 it will be noted that the metal between the points m. and m and Z and Z has been extended in a direct-ion transverse to the direction in which the rail extends and that the thickness of these depending lips has been decreased. This elongation of the metal transverse to the direction in which the rail extends and the reducing of the thickness of the metal in the flange so as to change the'cross sectional shape thereof is effected 'by sufficient pressure applied.

to the outside portion of the flanges to create compressionstrains (which extend in a direction transverse to that in which the rail extends) in the outer portion of the flanges whereby theinner portions of the lips will be forced firmly and permanently against. the edges f, f of the flange portions of thebase section. This transversely elongating by pressure is effected while the holding lip is incontact with the section engaged there-' by and the compression strains thus created in the outer portion of the holding lips "are indicated by the lines m a and Z 0'. The percentage of transverse elongation of the metal in the outer portion of the lips is greater than is the percentage of transverse elongation of the lips.

When assembled in position in the track,

of the metalin the inner portion -the joints between the base sections .of the rail and the wearing sections of the rail are staggered relative'to each other so that a wearing section will bot-h mechanically and electrically connect the base sections. This is possible when the wearing sections are attached to the base sections in the method herein described due to the fact that the compression strains in the outer portions of the lips are sufficient to maintain the lips in firm contact with the members engaged by the inner portion thereof so that the lips can serveas eflicient and permanent electrical connecting means between the wearing portions and the girder portions. By this construction the separate electrical connect-. ing bonds or means such as copper connectors which are commonly used, may be entirel'y eliminated.

It is obvious that various forms and modifications may be made without departing from the spirit and scope of the invention as set forth in the appended claims.

I claim as my invention:

1. The method of uniting the-top wearing section of a compound rail to the base section, both of which sections are held in place by bending at least one holding lip on one of the sections in engagement with the other section, which method consists in bending said lip into contact with the sectionwhich it engages and also in applying pressure on the outside of said lip suflicient in amount to elongate, in a direction transverse to the direction in which the rail extends, the metal in the outer portion of the lip being acted 1upon, so as to create compression strains in said metal at the outside of said 'lip whereby the metal at the inner portion of the lipwill be firmly pressed against the surface of the section with which it engages.

2-. The method which consists in assembling on a base section of a compound rail a wearing section having depending holding flanges, applying lateral pressure to the flanges to bend them into engagement with the base section and subsequently applying a suflicient pressure to materially change the cross sectional shape of at least one of the flanges so as to reduce the thickness of the flange and toelongate it on the outer portion a greater percentage than on the inner portion which engages the base section.

3. A compound rail comprising a bottom base section and a top wearing section held together by bent holding lips which have the metal on the outer portion compressed a sufficient amount to create compression strains therein whereby the lips will remain firmly pressed against the surface with which the inner side of the lips contact.

4. A compound rail comprising a longitu-dinally extending base section and a longitudinally extending top wearin section held in place thereupon, one of sai sections having integral therewith at least one bent holding lip in which there exist at the outer sides thereof compression strains that extend in a direction transverse to that in which the rails eittend,

- 5. The method of securing the top wearing section of a compound rail to the bottom section thereof, which comprises the bending of at least a portionof a holding lip on one of the sections into engagement with the companion section and materially reducing the thickness of the metal in the lip and simultaneously therewith elongating the metal in the outer portion of the holding lip a greater percentage than the metal in the iiner portion of'the holding "lip is elongate 6. The method of securing the top and bottom sections of compound rails which comprises the materially reducing of the thickness of the metal in a holding lip on one of the sections after the portion of a lip being worked upon has been brought into engagement with the section to be engaged thereb and while the reducing action is beto a greater percentage than the metal in the inner portion of the lip flows.

This specification signed and witnessed this 25th day of January, A. D., 1912.

. EDGAR RHODES. Signed in the presence of;- EDWIN" A. PACKARD, G. MCGRANN.