US2479932A

US2479932A - Rail anticreep device

Info

Publication number: US2479932A
Application number: US610634A
Authority: US
Inventors: Caddis J Hunnicutt
Original assignee: G & H Rail Controls Inc
Current assignee: G & H Rail Controls Inc
Priority date: 1945-08-13
Filing date: 1945-08-13
Publication date: 1949-08-23
Anticipated expiration: 1966-08-23

Description

1949. c. J. HUNNICUTT 2,479,932

RAIL ANTICREEP DEVI CE Filed Aug. 13, 1945 v W /z ISmaentor 042m ad/7M q Gttornen Patented Aug. 23, 1949 UNITED STATES PATENT OFFICE RAIL ANTICREEP DEVICE Caddie J. Hunnicutt, Kansas City, Mo., asslgnor to G & H Rail Controls, Inc., a corporation of Missouri 2 Claims.

This invention relates to track rail securing means of that class embodying cross ties and tie-plates disposed at suitable intervals upon selected cross ties, and the primary object of the invention is to make provision for establishing and maintaining a fixed relation between the associated rail and tie-plates to the end of guarding against dislocation of the track rail.

Specifically, my object is to provide means for supplementing the cramping action on the base of the rail by the conventional type of spikes, by means of a spring plate for engagement directly with the rail base or indirectly by engagement with the heads of spikes in engagement with the rail base.

Another .object is to provide means of the character indicated, having the dual function of applying compressive force directly on the rail base and for overlying and limiting upward movement of said spikes which are in engagement with the rail base.

A still further object is to provide track rail securing means of simple, strong, durable and inexpensive construction, and which can be installed easily and quickly at low cost.

With the objects set forth in view, the invention consists in certain novel and useful features of construction and organization as hereinafter described and claimed; and in order that it may be fully understood, reference is to be had to the accompanying drawing, in which- Figure l is a perspective view of a portion of a railroad track equipped with rail-securing means embodying my invention.

Figure 2 is a top plan view of a track rail as secured in position by a plurality of the securing means disposed at opposite sides of the rail and in relation to alternate cross ties.

Figure 3 is a vertical cross section taken on the line IIL-III of Figure 2.

Figure 4 is a detail perspective view of a compression spring plate for clamping engagement with the heads of spikes.

Figure 5 is a fragmentary cross section of a modified form of the invention wherein the clamping spring spans the spikes and directly engages the rail base, said cross section being taken on the line VV of Figure 6.

Figure 6 is a vertical longitudinal section taken on the line VI-VI of Figure 5.

Referring now to the drawing in detail wherein like reference characters identify corresponding parts in all of the views, I indicates conventional or other suitable cross ties, and 2 a section of a track rail for anchorage upon the cross ties.

It is designed that a flat metal tie-plate 3 as shown, shall be interposed between the rail and cross tie as customary, and the tie-plate equipped with upstanding ribs 4 for fitting against opposite margins of the rail base, and with holes 5 for the reception of the spikes 6, and the latter have the usual off-set heads 1, to apply clamping pressure or force down upon the base of the rail.

My improvement fundamentally, is to prevent or minimize creepage of the rail, and to accomplish such result 1 have made provision for the application of heavy pressure on the base of the track rail in addition to the cramping action on the rail by spikes.

As a simple and efficient method of applying a yielding or spring pressure directly upon the base of the rail, or upon the heads of spikes overlapping and engaging the base of the rail, I have provided for each pair of such spikes at one side of the rail, a stiff but resilient spring plate 8, which bears at its ends upon the heads of such spikes (Figs. 1 to 3) or spans such heads and bears only on the base of the rail, (Figs. 5 and 6) if desired. In either case the resilient plate is of bowed form and is fitted midway its length through an opening or notch 9 in an upstanding arm 10 rigid with the tie-plate and overhanging the base of the rail. In the use where the spring plate directly engages the rail base, it will be spaced slightly above the heads of said spikes.

To apply the bowed spring plate it is threaded through the opening or notch of said arm, being put under heavy stress to flatten or reduce the bow enough for the purpose and at the same time engage the base of the rail or the heads of the spikes, as the case may be. When so disposed it finds resistance by the arm and exerts a continuous pressure downward at its ends, and thus serves to supplement or increase the force tending to prevent longitudinal creepage of the rail and upward movement of the spikes.

To guard against longitudinal slippage or creepage of the spring plate, it is formed with a depression where engaged with the arm Ill, thus providing shoulders II which bear against opposite sides of said arm to prevent the creepage mentioned, and to facilitate the threading of the spring plate through the opening of arm I ll, and upon .or over the heads of the spikes, the extremities of said plate are flared slightly upward, as at 12.

It will be apparent from the description and drawing, that with the equipment of my invention, rails may be secured safely in position without the use of bolts and nuts. and with practically no chance, under ordinary service conditions, of the rails creeping longitudinally or spreading outward or collapsing inward, as it will be impossible for the spikes to work upward as long as subjected to the pressure of the spring plate, or appreciably upward where the spring p te S ly, Ql 'e I 5-fi m-l From the ablovde' scription and drawing it will be apparent that the structure possesses the advantages set forth as objectives in the introductory part of the specification, and that changes or modifications may be made withoutdeparture from the spirit and scope of theappendedclaims. Reference is made to myngcoifndin'gdivisional application Serial No. 40,367, filed July 23, 1948, claiming subject matter shown but not claimed in the instant case.

I claim: g

1. The combination with a track rail and an un rlyin cr s t erq fla tie Pl between the cross tie and the bottom of the rail, provided with ribs i'ltt'e d against the adjacent edge of the base of the rail, and with an upstanding armoverhan'ging the base oi the rail and midway the width of the plate, spikes extending through the plate into the tie, provided with heads overlying and engaging the base of the rail, and a spring plate extending parallel with the rail and underlying said arm of the tie plate and bearing against the same and at its ends engaging and applying downward pressure on the spikes.

2. A track rail assembly, characterized as in claim 1, said spring platehaving a depressed portion providing shoulders bearing against opposite sides .of the said arm of the tie plate.

CADDIS J. HUNN'ICUTT.

REFERENCES CITED The following references are of record in the file of this patent: