US1578378A - Rail anchorage for head-free rail joints - Google Patents

Description

D March 30 v. c. ARMSTRONG RAIL ANCHORAGE FOR HEAD FREE RAIL JOINTS a Filed Nov. 5, 1925 7 19 \g fllllf" I Patented Mar. 30,. 192.6.

UNITED STATES PAT T OFFICE.

VICTOR C. ARMSTRONG, OF HACKENSAC K, NEW JERSEY, ASSIGNOR TO THIE RAIL JoI'Nr COMPANY, or NEW RAIL ANCHORAGE F03 HEAD-FREE R AIL JOINTS.

YORK, N."Y.,' A oonronerron or NEW YORK.

Application filed November 3, 1925. Serial No. 66,593.

To all whom it may concern: V Be it known that I, Vro'ron C. ARMsTnoNc, citizen of the United States, residing at Hackennck, in the county of Bergen and State of New Jersey, have invented certain new and useful Improvements in Rail Anchorage for Head-Free Rail Joints, of which the following is a specificationl This invention relates to an improvement in rail joint structures of the so-called headfree type wherein the joint bar has a bear ing in and at-the head fillet of the bar.

A feature of practical importance in the head free type of rail joint is to provide a structural formation wherein vthe head of the bar is so related to the web and head fillet of the rail itself as to provide for an anchorage that gives the head of the bar clearance from the underside of the rail head and a loading engagement at the head fillet of the rail. Such an anchorage for the inner head projection of a rail joint bar has been found most effectively to assimilate the loading anddeflectionfforces to which a rail joint is subjected, and to bring the head of the bar into solid resistance to load deflections. It is the purpose of the present invention to insure the maintenance of this relation of the joint bar to the rail head fillet under the most exacting conditions of load and Wear to which the rail joint is subjected. 'Also, the invention provides an improvement which compensates for wear that may occur due to concentrating the loading and deflecting forces at the head fillets of the railthus tending to preserve the life and. strength of the Tail.

' With these and other objects in view.

whic will more readily appear to those fami iar with the art, the invention consists in the novel structural formation, and the relation of parts, hereinafter particularly described and clalmed.

Though 'susceptibleof structural modification without departing from the spirit or scope of the invention a preferred and practical embodiment thereof is shown in the accompanying drawings, in which Figure 1 is a sectional view'of one side-of a rail joint showing the improvement in the structure of the rail and the relation ofrail to the head of the rail joint bar.

a head-free joint bar thereto. 7

Figure 2 is a detail view showing a modification illustrating a change in form, whic-h may be resorted to in the rolling operation orspecial rail sections known to this appliinorder to obtain the modified rail fillet formation.

Referring to the exemplication of the invention shownin the drawings, the numeral 1 designates the rail having the head 2, the web 3 and the foot flange portion 4, and it I is the purpose-of the present invention to improve the rail structure at the head fillet thereof in order to better carry forward the practical features of a head-free rail joint of the type disclosed in the reissue patent of Thomson No. 15,773, granted February 19, 1924.

To obtain; the desired result it is to be observed that the present invention 'con-' templates an alteration or modification in the rail structure at the head fillet portion thereof in order to provide at' that point an arcuate outward extension 50f the rail head fillet. This arcuate outward extension 5 repref ents a definite and substantial thickening of the rail head fillet on an entirely different and larger radius than the radii of the head fillets of any of the standard cant. In the figures 'of the drawings the conventional outline of the standard rail head fillets is indicated by dotted lines and by contrast between the old outline and the special radius of the, outward extension 5, it is to be notedthat this-outward extension forms a thickened socket having therounded or curved bearing surface 6 with which snugly registers the surface 7 of the rounded bearing ball-8 forming the innerrhead pro '90 ection of the head 9 of a rail joint bar 1.0 of. the head-free type. s

The construction described makes a thickened socket especially adapted to receive theinner head projection of a headfree joint bar so as to provide a secure anchorage while freely admitting of the rotative movement of the bar either when tightened by the boltsor under the load imposed on the rail head, and, in addition 1 to carryingrforward in a practical way those desirable'featuresof'a head-free rail joint, the construction described provides a substantial abnormal body of-metal to compensate for wear at the point'where the loading and deflecting forces are passed from the The thickened anchoragesocketsor pro-- jections disposed at-the head fillets of the rail may be rolled in different forms without 10 changing the purpose or intent of the invention as for instance, in Figure 1 of the drawings there is shown an enlargement rolled at the head fillet of a rail, which enlargement merges evenly into the surface .of the web of the rail, and with but a slight ofiset as at 11 into the underside of the rail head,

where there is a clearance between the latter and the head of the bar. Or,.as shown in Fig. 2 of the drawings the outwardextension or socket projecton which provides for a larger-body of metal at-the head fillet of the rail may be in the form suggested in Fig. 2 of the drawings, wher'einslight ofi'sets at both the upper and lower edges of the projecting metal are formed, in the operation of rolling. And, in fact any minor changes in the form or proportion 'of the projecting metal and the contour at the edges where it joins respectively the rail web and the rail head may be resorted to head fillets and the outer edge thereof at the ofi'set'll isprefer'ablydisposed below and at a lesser angle to the horizontal than. the standard fishing angle of the rail head so as to more nearly lie in a horizontal plane at that point. The effect of this 'detail is to assist in better holding the head of the bar to its anchorage inlthe socket 5, maintaining it firmly in its bearing seat when rotated therein under the influence of tightening the bolts. I v f twill be noted from the foregoing that thei'improvement descfribed not only provides an improved anchorage for the head of a bar fitting the rail head fillet but also provides 'a structure which materially strengthens the fillets thereof and compensates for any increase in wear that may occur at those points of the loading. and deflection forces being directed through the head fillets; and the I improvement is 'applicableto any type of v rail.

Without further description it" is thought that the features and advantages of the invention will be readily apparent to those skilled in the art, and it will of course be understood that changes in the form, proportion and minor details of construction may be resorted to, without departing from the spirit of the invention andscope of the appended claims.

I claim 1. A head-free rail joint structure including a rail provided at its head fillet with an abnormal projection of metal formed with a rounded bearing surface, and the joint bar having its inner head projection engaging said bearing surface. 2

2. A head-freerail joint structure including a rail provided at its head fillet with an abnormal projection ofmetal formed with a rounded bearing surface of greater surface area than the standard head fillets, and the joint-bar having its inner head projection engaging saidbearing surface.

3. A headfree rail joint structure including a joint bar formed with a rounded bearing surface at the inner side of its head and the rail provided at its head filletwith an. abnormal projection of metal formed with a rounded bearing surface Whose upper edge is disposed below and at a lesser angle to the horizontal than the standardfishing angle of the under-surface of the rail head. In testimony whereof I hereunto afiizi my signature.

VICTOR c. ARMSTRONG.

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