US1227405A - Concrete railway-tie. - Google Patents

Description

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CONCRETE RAILWAY TIE APPLICATION FILED OCT. 11, l9l6'.

Patented May 22, 1917.

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UNITED STATES LEANDEIR DUNCAN, 0F BUTTE, MONTANA.

ooncnn'rn RAILWAY-TIE.

Specification of Letters Patent.

Patented May 22, 1917.

Application filed October 11, 1916. Serial No. 125,011.

To all whom it may concern:

Be it known that I, LEANDER DUNCAN, a citizen of the United States, and a resident of Butte, in the county of Silverbow and State of Montana, have invented a new and Improved Concrete Railway-Tie, of which the following is a full, clear, and exact description.

This invention relates to railroad construction and has particular reference to cross ties for railway rails.

Among the objects of the invention is to provide an improved form or type of ties, the same being of composite nature, the body portion of which is concrete suitably reinforced, but with special provision for attachment of the rails thereto.

Another object of the invention is to improve the construction of railway ties covered by Letters Patent of the United States, issued to me on August 22, 1916, No. 1,195,791. The improvement consists primarily in means whereby the attachment portion of the tie will be of a stronger or more reliable nature.

With the foregoing and other objects in view the invention consists in the arrangement and combination of parts hereinafter described and claimed, and while the invention is not restricted to the exact details of construction disclosed or suggested herein, still for the purpose of illustrating a practical embodiment thereof reference is had to the accompanying drawings, in which like reference characters designate the same parts in the several views, and in which Figure 1 is a plan view of my improved tie showin the rails in place but with the pillow bloc: of one rail in horizontal section on the line 11 of Fig. 2;

Fig. 2 is a vertical central longitudinal section on the line 22 of Fig. 1;

Fig. 3 is a vertical transverse section on the line 33 of Fig. 2; and

Fig. 4 is a perspective view of the sheet metal supporting casing for the cushion.

Referring now more particularly to the drawings, I show a cross tie for railway rails constructed mainly of concrete 10 from one end to the other and at 11 and 12 are pairs of upper and lower reinforcement rods extending likewise from one end of the cross tie to the other, thereby strengthening the concrete and making a device of suitable strength at a moderate price.

I will now describe the means for supporting and attaching rails, and since this part of the invention is the same at both ends of the tie, I will confine my descrip tion accordingly, it being understood that a similar description will apply to both ends of the tie.

As shown bestin Fig. 4, I provide a sheet metal casing 13 formed from a single strip \of sheet metal, but so'bent as to provide a bottom panel 14, parallel vertical panels 15 and horizontal end panels 16, lying in the same plane but projecting oppositely from each other horizontally at the middle of the tie vertically. The bottom panel 14 lies flush with the bottom of the tie, but is of less width than the whole tie, as indicated in Fig. 3. The vertical panels 15 are provided with holes 17 through which the rods 12 pass. By this means the rods hold the casings in proper position during the formation of the tie and the setting of the concrete, and also the interlocking of the rods and the casing structures assures a maximum strength for the completed article. The embedding of the ends 16 in the concrete likewiseserves to stiffen the structure and prevent any possibility of displacement downwardly of the casing in practice.

At 18, I show a cushion which may be of wood or some other suitable material supported directly upon the upper surface of the bottom panel 14, but of less width than the space between the rods 12. In other words, in the format-ion of the concrete, a space of rectangular form is provided between the edge portions of the casing. As indicated plainly, therefore, in Fig. 3, the cushion is of less width than the casing.

20 indicates a pillow block of cast metal or its equivalent having a base fitted within the above mentioned cushion space and resting squarely upon the upper surface of the cushion. Said pillow block, as in my prior patent, is provided with a pair of uprights 21 extending upwardly on opposite sides of the base flange of the rail, clamping means 22 and 23 being provided to secure the rail in place between them.

24 indicates a plurality of bolts extending upwardly from the bottom panel 24 through vertically alined holes 26 and 27 in the cushion and pillow block respectively. These bolts serve to clamp the pil- :20 prising a metal casing, the opposite end 10W block and cushion snugly Within the cavity 19 and connect them permanently to the bottom of the casing, although by removing the nuts from the bolts 24, these parts may be removed or replaced When necessary, the casing, however, being immovably connected to the body of the tie.

With the cushion blocks 18 made of Wood, I prefer that they be suitably impregnated With creosote or some other preservative to.

prolong their period of usefulness.

I claim:

1. The herein described reinforced concrete railway tie, the same comprising a body portion of concrete from one end of the tie to the other, the reinforcement means comprising a-plurality of rods coextensive in length with the tie, said tie'having adjacent each end rail attachment means com- Ocpies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

portions of which are interlocked With the concrete reinforcement means, a cushion supported upon the bottom of the casing and a pillow block secured upon the upper surface of the cushion.

2. The herein described cross tie for rail- Ways comprising a body structure of concrete having longitudinal reinforcement rods extending therethrough from one end to the other, a sheet metal casingsecured in each end of the body portion of the tie, a portion of said rods passing through both ends of the casing and locking the same in position, a cushion" supported upon the bottom of the casing and lying between said locking rods, and a'pilloW block anchored upon the upper surface of the cushion.

LEANDER DUNCAN.

Washington, D. G.

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