US957328A

US957328A - Reinforced-concrete sleeper.

Info

Publication number: US957328A
Application number: US54180910A
Authority: US
Inventors: Hugo Groeger
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-02-03
Filing date: 1910-02-03
Publication date: 1910-05-10
Anticipated expiration: 1927-05-10

Description

, H. GRGGER. REINFORCED CONCBETB SLEEPER. -APPLIOATIOH FILED PEB- 3 1910.

7 Patented May 10,1910. 2 sums-anam- 1.

7 n M D w -6 Q5? WWW/72.13%}? MAW H. GROGER.

REINFORCED CONCRETE SLEEPER.

APPLICATION TILED EB.3,1910.

[ 957,3 2 Patented May 10,1910.

Q 2 SHEETS-SHEET 2.-

an n

I la er; m mfiweues, 7 ,Hiig lllfqrng UNITED STATE PATENT OFFICE.

HUGO cabana, or VIENNA, AUSTRIA-HUNGARY.

REINFORCED-CONCRETE SLEEPER.

To whom it may venom: Be'it known that I, Huoo Gnoeaa, a subject of the Emperor of Austria-Hungary, and residing at IX. Lichtensteinstrasse 43 Vienna, Austria-Hungary, have inven Reinforced-Concrete Sleepers;

mrtainanenta-and useful provements in and I do hereby declare the following to be a full, clear, and exact descri ion of the invention, such as will enable 0t ers skilled in the art to which it appertains to make and use the same.

The present invention relates to a concrete sleeper reinforced with iron, which is constructed in such a manner, that it exactly j ing bolts by means of whi'cfthe wear plate is secured to the concrete The wear plate is of such shape incro..s section that the securing bolts lie at an angle and permit of the adjusting of the bolts to a normal %age and to an extension of the said gage.

asides this method of fastening the invention also comprises a new way of maintaining the gage. Hitherto the maintenance of the gage has been attained by fastening the rail to the sleeper and now and then a special distance lose 15 used for the purpose. This method ms serious disadvantages, for if the distance piece is placed so as to be visible, then it is exposed to the action of the sun, etc, and in consequence of variations in temperature does not maintain the gag: if on the' other hand the distance piece embedded and thus protected from changes dueto the immediate alterations of tempera- .-.ture, there are the disadvantages that the distance niece is exposed to the action of rust and is also inaccessible. In the present invention the distance piece for maintaining the gage, is placed within the sleeper, in the hollow space thereof, and ofiersa guar- Bpeelflcatlon' of Lateral atent.

Application filed February 8, 1910. Serial No. 64!;809.

antee for the maintenance of the gage hitherto unknown.

The accompanying drawin several methods of carrying into effect, in which- .Figure 1 shows a side viewot afconcre'te sleeper constructed according to the inmation, and also showing by way of exam one method of reinforcing with iron, and rails arranged on the sleeper. Figs. 2, 2,

and 2" each show a cross section through the body of the sleeper. Fig. 3 illustrates a longitudinal. section of an arrangement of book Patented May 10, 191i).

invention Its for fastening the rails to the sleeper.

Fig. 3 shows a plan new plate while Fig. 4. shows a modified 1mm of wear plate.

ofthewear Fig. 5 shows a cross sec- 1 tion of the body of the sleeper, showing the i l'ournaling of the hook bolts. Fi e is a ongitudinal section through the y sleeper showing the device for maintaining the gage. fig. 7 shows in a plan view the placing of a rail on a wear plate, according to Fig. 6.

The cross section profile of the prelim reinforced sleeper is bv preference made tan lar or. in the she e 05a tra nings, whi e the cross sections. profile of the interior hollow space is circular, ova

circular, rectangular or any other desired shape. The reinforcement consists of iron insertions, the cross section of these maebtions being determined by calculation. Figs. 1, 2, 2', 2-", show examples of the reinforcement. The round iron bars a extend over the total lengthptthe sleeper, some of these being straight while others are bent, and short iron bars 11 serve to strengthen the sleeper. These iron insertions are of course so calculated, to counteract the bending, pulling and compression tensions. They are connected by means of loops 0 and d, of which the loops c spirally incloee all' theiron inser ions and corresponding to the action of the transverse stresses are arranged with a closer pitch beneath the place wheri the rails are situated and with a larger pitch at the ends of the sleeper and in t of the track, while the oops d alprgrs inclose two straight and one bent iron and are rigidlv connected with the same, in order that the rods may retain their shape during the filling in of the concrete. The loops may serve us a substitute for the spiral loops ecenterf plate 0.

distributed over the ..hole length of the sleeper, in the form of round or flat iron, or the reinforcement can be carried out in any desired manner which will fulfil the same purpose.

he fastening of the rails to the reinforced concrete sleeper is effected Figsf3, 3, 5) by preference by the help of a wear The essential alteration in the shape of this plate, from that usually e1nployed, lies in the construction of the hook and the projection for the nut of the outer bolt The wear plate is fixed to the sleeper as snown in the example illustrated by means of four hook bolts f which all have the same shape and are of the same size. Two of these hook bolts which are in the outside are inclined to the vertical axis of the rail and serve to maintain the ga e, while the two inner bolts are substantial vertical and exert a resistance against the pulling stresses which result at the foot of the rail in consequence of the tipping action, and serve to wedge the rail under the hook portion of the wear plate 0 by means of the 3 correspondinglv formed clamp plates,

The hooks of the bolts f engage in s cevcs Q h inserted in the concrete, and can be rotated about the horizontal axis of these sleeves. The nuts of the bolts f are fastened by means of elastic washer rings, which are well known. The wear plate distributes the pres ure of the rail over the total width of the ska-per, in a thoroughly reliable manner.

' The holes on the upper surface of the sleeper for the bolts can be made previously or can he chipped out in the finished sleeper when in sit 1.

A modification of this method of fastening is shown in Fig. t. In this case the hook on the wear plate 1; is on the inside, while the out r side of the foot of the rail is fastened to the wrar plate by means of a small bolt provided with a clamp plate 1'; For fast ning the whole arrangcnu-nt to the slccpcr in this case also the h ok bo ts f serve, the urn-angcnwnt ol' the holes in the sleepr remaining unaltered. The lZlI'tllL-l 'ltst'llll tl permit al o an increase by the bolts being capable of being rotated within the sleeves II. The cross-section of the wear plate crn'r spomling to that of the axis ol' the bolts is made that; of a circular arc .l- .1: the ntcl' of the are being 1 the holes provid d for he bolts in the plates being t'trhl ill, the br ad base of which is in the interior.

l l i i l I means described and in the manner indicated, not only in the mode of fastening according to Fig. 3, but; also in the moditication according to Fig. 4.

In the mode of construction illustrated a rod /c is rovided in the hollow space of the sleeper tor the purpose of maintaining the gage (Fig. (3). This rod engages by means of two hooks n the outer side of the foot of the rail, and also has a screw tightening device consisting of a turnbuckle 1. The latter permits of a very accurate adjustment, and also an adjustment when the superstructure is already finished. In order to be able to adjust the device easily a hole. M is provided in the surface of the sleeper. So as not to weaken the center portion of the sleeper unm-cessarily, it is advisable, not to place this opening and likewise the screw tightening device, in the center of the track, hutmored'o the side, say at a distance of cm. from one of the rails. In consequence of the protectio. given by the top layer, the distance piece for maintaining the gage is only subjected to minimum variations of temperature and for this reason the gage is accurately maintained. Final-Ly it should also be noted that the reinforced. con- ('lt'lu sleeper according to the present invcntion can he used instead of the wooden slccpcr with the usual superstructure of chairs for the rails. The usual chair is connected to the slce a-r by means of the hook bolts In a like manner the present; sleeper can be used without any alteration when used parallel with the rails, the rails being fastened in an analogous manner by means of hook bolts. Ordinary sleepers and longitudinal sleepers with several hollow spaces adjacent to each other, can beapplied to jointing places, crossings, switches and the like, in order to give the constructional parts and the parts of the rail a safe lmdding, or foundation.

Having now described my invention what I claim as new and desire to secure by I.ettcrs latent is 1. In combination with a hollow reinforced concrete sleeper, track rails, a wear plate beneath each rail, the outer side of each wear plate having a spherical surfzne and a lmokcd projection for engaging the foot of the rail, vertical and inclined holding down bolts passing through holes in the wear plate and slot-per and extending into the hollow space of the latter, the bolts having hooked ends, sleeves mounted in the sleeper, and engaging the hooked ends of the bolts, nuts on the outer ends of the bolts, those on the inclined bolts fitting upon the spherical surface of the wear plate.

In combination with a hollow reinforced concrete sleeper, track rails, a wear plate beneath each rail, the outer side of he increase of gagr is ell'ected by the each wear plate having a spherical surface and a hooked proflection, approximately verin the wear plate and sleeper and extending into the hollow space the latter, and

' means permitting the anchoring of the bolts.

3. In combination with a hollow reinforced sleeper, track rails, means for maintaining them apart at a definite gage, vertical and inclined holding down bolts passin through holes, and extending into the ho low space in the sleeper, the bolts having hooked ends, sleeves mounted in the sleeper and engaging the hooked ends of the bolts for the purpose described. 7

is-In combination with a hollow reinforced sleeper, track rails, adjustable means for maintaining them apart at a definite gage, vertical and inclined holding down bolts assin through holes, and extending into the ho low space in the sleeper, the bolts having hooked ends, sleeves mounted in the sleeper and engaging the hooked ends of the bolts for the purpose described.

5. In combination with a hollow reinforc ed sleeper, track rails, vertical and inclined holding down bolts assin through holes and extending into t e hol ow space in the sleeper, the bolts having hooked ends, sleeves mounted in the sleeper and engagm the hooked ends of the be ts, and a heel;

adjustable gage maintaining rod engaging the foot of a rail and disposed within the hollow space of the sleeper..

6. In combination with a hollow reint forced concrete sleeper, track rail a. wear plate beneath each rail, a spherica surface 40 and a hooked projection on the wear-plate, vertical and inclined holding down hols passing through holes in the wear late and sleeper and extending into the ho ow s ace of the latter, means permitting the anc or- 'ing of the bolts at one end and the radial ad ustment of the inclined bolts, a hook shaped gage maintaining rod for the rails engaging the foot of a rail and disposed within the hollow space of the sleeper and means thereby one end of the ga e rod is accessible from the exterior of the s eeper.

In testimon whereof I aflix my signature in presence 0 two witnesses. 1

HUGO GROGER.

Witnesses:

LUDOLF TAEUMER, Trmonon Scnwumanena.