US1036234A - Ferroconcrete sleeper. - Google Patents

Description

A.HENRY. FBRROCONGRETE SLEEPER. APPLICATION FILED DBO. 4.21911.

2 SHEETS-SHEET l.

A. QHENRY. FERROCONGRETE SLBEPER.

APPLIGATION FILED DEG. 4, 1911.

Patented Aug.20,1912.` f

2 SHEETS-SHEET 2'.

sATEs Anutritivi* HENRY, or rams, FaANcE.

PATENT oFFIcE.

' rmtaocoivca*Errismeren'.`

Srectiee lfetsgs Patent Patented Aug. 20,1912.

Appncatin mea Dember 4, 11911., serial No. 663,662.

. To all whom t may concern.'

Be itvknown that I, ALBERT resident of Paris, France, and a c1t1zen of France, have invented `a new .and .useful 11n-- and are arranged in a manner to constitute two hollow spaces with vertical walls and to increase the resistance of the sleeper to bending in the vertical direction.

The seatings, formed of iron, steel, etc., are preferably cut at their base to form tongues which assure a perfect connect-ion and bond withv the concrete' and its reinforcement. The seatings form a lbearing that resists crushing in spite of 'their small weight, and they constitute an intermediary between the rail and the body of the sleeper. They thus deaden by their elasticity the shocks which tend to destroy the concrete. Moreover, the multiple connections in the concrete absorb the pressures already mod-,-

erated without thevconcrete being damaged; the seating has the `advantage of yielding to the oscillat-in movements of the rail, in

the longitudina direction, under the su'cfl cessive rolling loads; these strains are not transferred to the sleeper which always remains level instead of tending to oscillate on its longitudinal axis, an oscillation which produces deterioration and gives rise to the defect which may be styled the dance or F the up and dow-n movement of the sleeper.

The following description and accompanying drawings will explain the charac? tcristics of the ferro-concrete sleeper and of the rail attachment, which .constitute the object of this invention.

Figure l represents in perspective andbyl way of example a sleeper, according to the present invention, for supporting flange rails. Fig. 2 represents a part elevation and apart section along line X-X of Fig. 3, which figure is a plan of the sleeper. Figs.

f 4 and 5 represent the sleeper in'vertical sec- HENaY, a,

tionf along line Y-Y of Fig. 2 and in end view respectively. Fig. 6 is a sectional View of a slightly different form of sleeper. Figs. r' and -8 show in part vlongit-udinalsection and in end View, a sleeper according to this invention supporting a double headed rail mounted on a chair This reinforced concrete sleeper is con stituted essentially, as has been said -above v by twol hollow steel supports forming a bearing a on which the rails are fixed and which are cut at the base to form tongues b for connection with the concrete and the reinforcement. The bearings or seatings are connected together in the concrete by a main reinforcement c which passes between and is held bythe tongues b, which reinforcement comprises one or more steell rods or bars of suitable section. rounded by a second reinforcement, which maybe arranged as shown,l in the drawings,

that is to say may consist of steel wires coml 1 so the seatings and whlch pletely surroundin the lower portions of the, concrete aroun are. brought toward one another and straightened toward the middle of the sleeper las clearly seen in Fig. l. In this way the reinforcement forms between its nected together by a-stirrup J buried in the concrete (as is seen in-Fig. 2), two cavities or slots e havin vertical sides, the object of which is to facilitate the positioning of the sleeper in the ballast when thatis pushedv The concrete is also sur-l back tothe middle of the trackl under the `pressure from the rails. This arrangement has also the efect of augmenting the resistance at the middle of the sleeper by lighteni-ng it and prevents any movement in the direction of the track, by opposing a vertical 'abutment against the ballast. Finally, vthe openings z' can be arrangedunder the seatings a to lighten the sleeper and permit z .the passa e of. bolts for the fixingl of the flange rais f. When headed bolts cannot be used, bolts formed as in Fig. 2 may be used. The most convenient arrangement consists in arranging oval holes for the passage lof headed bolts it or clips or-studs, to

permit the adjustment of the gage.

and 8 the rail chairs g are fixed to the seatings by means of headed bolts h or by any other means.

As will be understood, this kind of sleeper,

In the modified sleeper shown in 7 85 two central doubled portions, which are conbesides the advantages set forth above, resists the creeping of the track as also the sidewise movements, by reason of the fact that the sleeper presents vertical faces suffi ciently buried in the ballast.

P Having thus described the nature of my said invention and the best means I know of carrying the same into practical effect, I claim z- 1. A reinforced concrete sleeper compris ing a concrete tie member, hollow metal rail seatings embedded in said concrete and eX- tending above its surface to form resilient rail supports, and metal reinforcing wires or rods which are embedded in the tie member and extend around the bases of said seatings.

rail supports, and metal reinforcing wires or rods arranged in two groups each runnlng through the tie member to reinforce the concrete on bot-h sides of the slot, said wires eX- tending around the bases of both seatings.

3. A reinforced concrete sleeper comprising a concrete tie memberJ hollow metal rail seatings having legged projections in staggered relation embedded in the concrete, said seatings extending above the concrete to form resilient rail supports and reinforcing wires or rods embedded in the tie member and threading said legs around the seatings.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

ALBERT HENRY.

Witnesses:

H. C. COXE, GABRIEL BELIJARD.

Images