US684466A - Tie-plate. - Google Patents

Description

No. 684,466. Patented Oct. l5, l90l. J. M. SELLERS.

TIE PLATE.

(Application filed Feb. 4. 1901.

(No Model.)

I LATENT FlFlCEt JOHN M. SELLERS, OF CHICAGO, ILLINOIS.

TIE-PLATE.

SPECIFICATIUN forming part of Letters Patent No. 684,466, dated October 15, 1901.

Application filed February 4,1901. Serial No. 46,023. (No model.)

To (all whom it may concern:

Be it known that I, JOHN M. SELLERS, a citizen of the United States, residing at Chicago, in the county of (Jock and State of Illinois, have invented certain new and useful Improvements in Tie'Plates, of which the fol' lowing is a specification.

My invention relates to improvements in tie-plates which are intended to be secured to the upper surface of railway ties or sleepers, so as to furnish a bearing plate or surface upon which the rails are laid and to which the rails are spiked instead of being spiked or secured directly to the sleepers.

The objects of my invention are to furnish such a tie-plate which shall be simple to pro duce, shall be most effectively secured to the tie, and in an extremely simple manner.

A further object of my invention is to produce such a tie-plate, which can be readily rolled out of old T-rails.

These and such other objects as may hereinafter appear are attained by the devices illustrated in the accompanying drawings, in which Figure 1 shows a section of a T-rail separated longitudinally through the web for the purpose of rolling the same into my improved tie-plate. Fig. 2 shows the sections of the same rail as they appear after having been rolled into my tie-plate. Fig. 3 is a perspective view showing a section of a rail laid upon one of my tie-plates and showing the tie-plate and tie in section, with the tie-plate driven into the tie.

A great advantage of my improved tie-plate is that it is of such form that it may be readily rolled from old and damaged T-rails without any waste and in such a manner that the form in which the T-rail has been rolled in the manufacture of the rail amounts substantially to a first step in the manufacture of my tie-plate.

As shown in Fig. 1, I separate a T-rail longitudinally about midway of the height of its web into the pieces A and B. This gives me two blanks, each of which comprises a wide portion a b and a narrow portion a, b projecting therefrom. By means of suitable rolls and repeated passes these blanks are rolled into the tie-plates shown in Fig. 2, the head and a portion of the Web of the rail being rolled into a tie-plate and the flange and the other portion of the web being rolled into a like tie-plate. These tie-plates, which are substantially T-shaped in cross-section, consist of a flange O and a depending stem D. This depending stem is preferably a continuous stem depending from the center of the flange along its entire length. The distinctive feature of this stem lies in its spearshaped cross-section, it having a sharp-pointed or cutting edge at its farther extremity, from which edge it tapers to the shoulders d, between which and the point of its junction with the flange it is rounded or hollowed into the recesses (Z. 'While the flange of the tieplate may be rolled perfectly flat, both upon its upper and under surfaces, I prefer to roll it, as shown in the drawings, with a projecting longitudinal rib or shoulder 0 extending parallel with the stem D on each side thereof. This shoulder may be of any suitable contour; but I consider that the best results are obtained when it is formed so as to round away from the stem D, as shown in the drawings. These shoulders or ribs may be most readily formed by rolling sand-troughs 0 along the upper surface of the flange C, so as to correspondingly bulge the under side of the flange G into the desired shoulders; but this is not essential to my invention, and, if desired, the flange C may be formed perfectly plane on its upper side and with the longitudinal shoulder c on its under side.

By forming my tie-plate from sections of T-rails divided as described I am enabled to readily produce a tie-plate with a very long stem D, which is adapted to be driven into the tie, so as to firmly secure the tie-plate to the wooden tie. While this of itself is a great advantage over all such plates known to me in the prior art, distinctive features of my device are the grooves d and the shoulders c, which cooperate to hold the tie-plate in place against the bounding of the rail under the passage of trains in the following manner:

It will be observed that the tie-plate is laid longitudinally with the tie and the rail is laid transversely of the tie-plate. The depending stem D, extending longitudinally of the tie-plate, will therefore enter the wood of the tie lengthwise of its grain, and by reason of its wedge shape the tendency of the stem D when driven into the tie will be to separate the fibers of the wood and to crowd them together rather than to cut them. It is evident, therefore, that as soon as the shoulders d at the Widest part of the stem D are driven below the fibers of the wood at any given point the natural elasticity of these fibers will cause them to enter into the recesses of the grooves cl and to resist any tendency of the plate to draw out of the wood, thereby causing the shoulders at to force the fibers of the wood out of the grooves or recesses 61. This tendency of the wood to crowd into these grooves d and to grip against the under sides of the shoulders (1, so as to hold the tie-plate securely, is aided by the ribs 0 as soon as the under side of the flange of the tie-plate is driven down upon the upper surface of the tie. \Vh'en this occurs, the ribs 0 are forced into the wood of the tie and tend to crowd and compress the fibers of the wood into the grooves d. Of course the more the wood is compressed into these grooves the greater the resistance it will offer to the withdrawal of the stem D.

I am aware that it is old in this art to provide tie-plates having sharp-edged ribs for driving into the wood of a tie, and also having various forms of integral spiked points for this purpose, and I do not broadly claim such an article as my invention; but, so far as I am aware, it is broadly new with'ine to produce a tie-plate with longitudinal grooves d upon the attaching-stem D for the purposes specified, and I also believe it to be broadly new with me to provide such a plate with the ribs con the under side thereof for the pur pose of crowding and compressing the wood, so as to more firmly secure the attaching ribs, stem, or points in the wood.

Of course the exact contour of the grooves d of the shoulders 01 and of the ribs 0 may, any or all of them, be Varied without departing from the spirit of my invention, and such variations of contour and proportions are contemplated by my invention.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-- 1. Atie-plate comprisingahorizontalfiange and a centrally-disposed stem extending longitudinally and from the under face thereof, said stem having a generally spear-shaped cross-section, substantially-as described.

2. A tie-plate comprising a bed-plate, a stem extending longitudinally and from the under face thereof, said stem having a cutting edge, longitudinal shoulders on each side thereof and longitudinal grooves between said shoulders and the under surface of said bed-plate, substantially as described.

3. In a tie-plate, the combination with a bed-plate, of an attaching-stem on the under side thereof, said attaching-stem having a wedge shaped point, longitudinal grooves upon the opposite faces of said stem between the widest part thereof and the under side of said bed-plate, and longitudinal ribs on the under side of said bed-plate adapted to cooperate with said longitudinal grooves, substantially as described.

4. Atie-plate comprisingabed-plate, astem extending longitudinally along the under face thereof, said stem having a wedge-shaped point and longitudinal grooves extending along opposite faces of said stem between the widest part of said wedge and the base of said stem, substantially as described.

5. A tie-plate comprisingabed-plate, astem extending longitudinally along the under face thereof, said stem having a wedge-shaped point and longitudinal grooves extending along opposite sides of said stem between the widest part of said point and the base of said stem, and said bed-plate being provided on its under side with longitudinal ribs upon opposite sides of said stem, substantially as described.

JOHN M. SELLERS.

Witnesses:

M. E. SHIELDS, E. Y. GRIDLEY.

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