US1134160A - Railway-spike. - Google Patents

Description

side faces of the spilre are left smooth, thus reducing the expense of manufacturing.

As will be readily obvious, when the spike is embedded within a tie, the wood fibers thereof will expand into the concave faces 14 and will particularly expand to engage the front and rear faces of the spike, and thus enter the grooves 16 to be engaged by the curved shoulders 18 formed by the side walls of saidv grooves. Said shoulders being arranged transversely of the spike, will therefore, engage the tie to prevent the ver- Ytical movement of the spike, and it will also hev clear that the adjacent portions of the tie expanded into the grooves 16 will also expand to be engaged by the oppositely inclincd shoulders 18 formed by the end Walls of each of said grooves. rlhis is best shown in Fig. 4- of the drawings and it will be ohserved that said shoulders are so arranged as to prevent transverse movement of the spike. y

l thus provide a construction wherein the spike is held, when in engagement with the tie, both as against vertical and transverse movement, and while l have shown the longitudinally spaced grooves 16 as extending the entire length of the adjacent concave faces 14 of the spike, still, it is to loe under-y stood/that l do notwish to limit myself to any particular nulnbc of said grooves nor to the relative spacing thereof. From the above description in connection with the accompanying drawings, it will loe seen that l provide a very simple and edicient structure Ifor the purpose set forth, such as may be readily manufactured and which will he foundI highly practical in actual use.

Having thus described my invention, what I claim and desire to secure by Letters Patent is 1. A railway spike" including a shank having a head formed thereon and being provided with a driving point, said shank be ing formed with adjacent side faces having longitudinally extending channels formed therein, one of said channels being`sulostan- 'tially smooth and the other of said channels being provided with a plurality of transversely extending shoulders and oppositely inclined converging shoulders.

2. A railway spike including a shank having a head formed thereon and being provided with a driving point, said shank being substantially rectangular in cross section and formed with fiat faces adjacent the head thereof, there being longitudinally eX- tending channels medially formed vin the sides of the shank at the adjacent extremities of said flat faces, oppositely disposed channels being arranged in pairs, one pair ideales 3. railway spille including a shank having' a head formed thereon and provided with a driving point, said shank having a transversely arranged shoulder formed thereon continuously curved from end to end. and providedl with oppositely inclined shoulders at the extremities of-said vfirst mentioned shoulder, said last mentioned shoulders inclining inwardly toward each over said first menother and in a direction tioned4 shoulder. i

e. A railway spike includinga shank having a head formed thereon and provided with a driving point, said shank having a groove formed therein dening transversely arranged. shoulders upon one side of the shank, said shoulders being continuously curved from end to end and said shank having oppositely inclined shoulders formed thereon at the extremities of said first nientioned shoulders, said last mentioned shoulders inclining inwardly toward each other and in a direction over said groove and over said first mentioned shoulders.

5. A railway spike including a shank have` ing a head formed thereon and provided with a driving point, said shank having a transversely arranged shoulder formed thereon continuously curved from end to end and 'having outwardly converging oppositely inclined shoulders formed thereon at the extremities of said first mentioned 'shoulder.

with a driving point, vsaid shank being,

formed with a longitudinally extending channel lipon one side thereof and having a transversely disposed groove formed in said G. A railway spike including a shank liav- .Y ing a head formed thereon and provided substantially les

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