US1192739A - Concrete railroad cross-tie. - Google Patents

Description

R. R. BLAIR.

CONCRETE RAILROAD CROSS TIE.

APPLICATION FILED MAY 28. 1915.

Patented July 25, 1916.

2 SHEETSSHEET 1.

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R, R. BLAIR.

CONCRETE RAILROAD CROSS TIE.

APPLlCATION FILED MAY 28' I915.

Patented July 25, 1916.

2 SHEETSSHEET 2 in J H ROBERT R. BLAIR, OF ALAMOGORDO, NEW MEXICO.

CONCRETE RAILROAD CROSS-TIE.

Application filed May 28, 1915.

To all whom it may concern:

Be it known that I, ROBERT R. BLAIR, a citizen of the United States, residing at Alamogordo, in the county of Otero and State of New Mexico, have invented certain new and useful Improvements in Concrete Railroad Gross-Tics; and I do hereby declare the following to be a full, clear, and

exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

This invention relates to improvements in railway ties and rail fasteners and especially with reference to a reinforced concrete railway tie and improved means for fastening the rails on the tie, to keep the rails from spreading, one object of the invention being to effect improvements in the construction of the tie, another object being to effect improvements in the construction of the rail fastening devices.

The invention consists in the construction, combination and arrangement of de-' vices hereinafter described and claimed.

In the accompanying drawings :Figure 1 is a plan of a railway tie constructed in accordance with my invention, and also showing the rails and rail fastening devices. Fig. 2 is a side elevation of the same with the rails in cross section. Fig. 3 is a transverse sectional view of the same on the plane indicated by the line 33 of Fig. 2. Fig. 4 is a similar view of the same on the plane indicated by the line 41 of Fig. 2. Fig. 5 is a vertical longitudinal sectionalyiew of the same on the plane indicated by the line 5-5 of Fig. 1. Fig. 6 is a similar view on the plane indicated by the line 66 of Fig. 1. Fig. 7 is an end elevation of the same. Fig. 8 is a detail perspective view of one of the cushioning blocks. Fig. 9 is a detail inverted plan of the tie and its connections.

The tie 1 is of oblong rectangular form with vertical sides 2 vertical ends 3 a fiat horizontal top 4 and with the bottom or lower side 5 provided with transverse corrugations 6 which engage in the road bed and prevent the tie from slipping. The tie is made of concrete and is molded in a suitably constructed mold.

In the center of the tie and extending from end to end thereof is a reinforcing rod 7 made of iron or other suitable ma terial and the ends of which are turned down at right angles as at 8 and, being em- Specification of Letters Patent.

Patented July 25, 1916.

Serial No. 30,931.

bedded in the concrete material of the tie, is by reason of the provision of its downturned ends effectually locked and materially increases the strength of the tie. Above and below the central longitudinal rod 7 and in vertical alinement therewith are shorter reinforcing rods 9 which are also embedded in the material of the tie while the latter is being molded and have downturned keying or looking ends 10. By the provision of these centrally arranged shorter reinforcing rods the central portion of the tie is strengthened and the same is prevented from breaking.

At a suitable distance from the sides and top and bottom of the tie are outer longitud nally arranged reinforcing rods 11 whlch extend from end to end of the tie and have downturned keying or looking ends 12. Shorter reinforcing rods 13- are also provided which are arranged in the central portion of the tie, in vertical alinement with the rods 11 and have downturned keying or looking ends 14.

In the upper side of the tie at a suitable distance from its ends are recesses 15 which extend across the tie and form seats for the reception of cushioning blocks 16 which may be made of wood, preferably oak, or of any other suitable material and the width of which exceeds that of the bases of the rails 17. The rails bear on the said cushioning blocks.

The tie is provided with bolt holes for the reception of bolts 18, the heads 19 of the bolts being square or non-circular and fitted in recesses in the lower side of the tie and hence the bolts are prevented from turning. The bolts extend up above the tie at points immediately; on opposite sides of the rail bases. and through notches 20 in the sides of the cushioning blocks 16. Rail fastening blocks 21, of iron or steel are provided with openings through which the bolts extend and also with arms 22 which extend over and engage the bases of the rails, said securing blocks bearing directly on the tie and being secured in place by means of nuts 23 which are screwed on the bolts.

The transverse corrugations in the bottom of the tie prevent the same from slipping. The reinforcing rods, with their angularly bent keying ends, greatly strengthen the construction of the tie and the cushioning blocks absorb the shocks from the rails and afford the necessary resilience. The bolts, with their locking blocks and nuts, andby reason of the attachment of theboltsto' the tie, securely fasten the rails on the tie and effectually prevent the rails from spreading. Having thus described my invention I claim i A concrete tie rectangular in cross section having a series of longitudinally extending reinforcing bars embedded centrally therein and spaced apart, a second series of longitudinally extending reinforcing rods arranged in spaced relation to the top and bottom of the tie and located between the first named bars, said rods extending from end to end of said tie, each of said rods and bars provided With doWnturned ends for embedded in the under surface of said tie preventing rotation of the same, and the bottom of said tie having transverse corrugations thereon, the convolutions of Which are arranged in the horizontal plane pre venting movement of the said tie upon a road bed. i

In testimony whereof I afiix my signature in presence of tWo Witnesses.

7 ROBERT R. BLAIR.

Witnesses:

J. V. OLIVER,

A. F. MENGER.

Copies of this patent may be obtainedvfor five cents each, by addressing the Commissioner of Patents. Washington, D. C.

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