US932300A - Block for receiving rail-fixing devices in reinforced-concrete sleepers. - Google Patents

Description

G. LIEBEAUX & F. HENNEBI BLOCK :FOR .REGBIVING RAIL FIXING DBVIGES IN REINF@ GONGRBTE SLBEPBRS. APPLIOATION FILED JUNE 27, 1908.

932,300. Patented Aug.24,19o9.

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932,300. ArPLIoAHoN FILED JUNE 21, 190s. Patented Aug. 24, 1909.

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UNITED sTATEs PATENT oEEioE.

GASTON LIEBEA'UX, 0F NANTES, AND FRANQOIS HENNEBIQUE, 0F PARIS, FRANCE.

BLOCK FOR RECEIVING RAIL-FIXING DEVICES IN REINFORCED-CONCREIE SLEEPERS.

T0 all whom it may concern:

Be it known that we, GASTON LIEBEAUX and FRANQoIs HENNEBIQUE, citizens of the Republic of France, residing at Nantes and Iaris, respectively, both in the Republic of France, have invented certain new and useful Improvements in Blocks for Receiving Rail-Fixing Devices in Reinforced-Concrete Sleepers.

In our previous patent application, dated May 6th, 1907, Serial No. 372,078, Systems of reinforced concrete sleepers for railways were described, one of the characteristics of which consists in the insertion in the interior of cells formed in the heads of each sleeper, of one or more removable wood blocks. These wood blocks being retained in their positions by suitable means wedges, keys, spikes or bolts) serve for the fixing of the rails by the ordinary methods.

The invention which will now be hereinafter described consists in arrangements for securing the blocks in the interior of the cells of the heads of the sleepers with a view to dispensing with wedges, spikes and the like, or any other analogous means of fixing, and in the production of blocks intended to be substituted for the wood blocks mentioned in the previous application, the use of which has certain drawbacks, due principally to variations of temperature as well as alternations of dryness and moisture.

In the accompanying drawings z-Figure 1 is a longitudinal section of a sleeper head with removable blocks retained in place without wedges or spikes; Fig. 2 is a corresponding horizontal pl-an; Fig. 3 is a transverse section on the line 2 2 of Fig. 2; Figs. 4L, 5 and G are respectively three modifications of the arrangement of Figs. l, 2 and 3, in longitudinal section, plan view and transverse sections through the movable block serving for the lixing of the rail and through the adjacent block forming a key; Figs. 7, S and 9 show respectively, in a similar way, a longitudinal section, a horizontal plan, and a transverse section of an arrangement yielding the same result without the use of keys; Figs. 7A and 9A are sectional views, the former a longitudinal, and the latter a transverse section, for making the construction referred to clearer. Figs.`10 to 1l relate to the manufacture ofthe blocks Specification of Letters Patent.

Application led .Tune 27, 1908.

Serial N0. 440,742.

intended for receiving the means forixing the rails.

In these igures the same letters indicate the same parts or the same devices.

Patented Aug. 24:, 1909.

In the arrangement in Figs. l-3 the blocks c intended to receive the devices for fixing the rails are held in position simply by keys g of cement or any other suitable material, a block c and a key g being juxtaposed in each cell or slot formed in one of the heads a of the sleeper. The block c and the adj acent key g bear downward on two shoulders it suitably reserved in the interior of the cell, and to the form of which they adapt themselves; further the block c is provided with a projecting part o* at the lower part of the face opposite to that in contact with the key g. This project-ion c* lodges in a recess reserved Afor this purpose in the sleeper, under a shoulder h when the block 0 is inserted. The faces of the block c and of the key g which are in contact follow an inclined plane p 70 and a plane p p of similar inclination is found on the opposite face of the key g in contact with the sleeper.

It is evident that if a cell is provided with its block c and its key g as shown in the drawings, any stress may be exerted on the block c which receives the rail fixing device, wit-hout its being possible for it to be drawn out of its position. It is, however, easy to change this block, by first removing the key g and then causing the block c to slip into its place, which block may then in its turn be raised vertically. By an inverse operation the block c and the key g are also equally easily put in position. It is important to reiark that the Obliquity of the two faces of the key g and of one face of the block c according to the planes p p and p p is not indispensable, but these faces may also be vertical. Similarly the form of the shoulders h h" may vary. Inclined planes suitably directed might even be substituted for these projections.

As an example Figs. 4, 5 and 6 represent constructive modications which, however, alter nothing in the nature of the invention. In these modificationsthe blocks cv and the keys g are put in'place and withdrawn from their cell in the same way as in the arrangement shown in Figs. 1,-3.

Vith the `arrangement shown .in '.7, 8

and 9 the result indicated hereinbefore is obtained without the use of the key g. In order to attain this object the blocks c have two of their faces parallel and directed along planes g g and g g oblique Arelative to the bases; these blocks are lodged naturally in cells of the same form with shoulders or ledges L. It is evident that with such an arrangementV of the rail fixing de\ vice, for instance, a treenail engaging over the flange of the rail and exerting on the block c an approximately vertical pressure, it is impossible to cause the said block to emerge from its location in this way, because in order to operate this emergence the block c must necessarily be caused to slide in a direction parallel to its edges Which faces, as the same vobject would be attainedr by directing obliquely the lateral faces. The same result would `be also obtained by giving tothe said block the form of an oblique prism.

By referring to Figs. 7 8, 9, it may be seen that the blocks have respectively two of their faces g g and g Q, inclined vin parallel planes, but directed inversely in each block. These inclined faces are visible in the longitudinal section in Fig. 7. But instead of giving the faces the inclinations shown, the same result may be obtained by inclining the lateral faces of 4the blocks, thereby constituting a modification.

The form of the blocks .c such as shown in the drawings, is not absolutely fixed, but this form is capable of numerous modifications adapted to present the characteristics heref inbefore set forth. The blocks c may be of wood, but it is possible to make them in such a way that differences of temperature, humidity or dryness have no influence on them. Thus blocks little sensitive lto changes of temperature are obtained by forming these blocks by means of strips of Wood of variable and suitable thickness, caused to adhere one lto the other, care being taken to cross the fibers. Blocks fulfilling the requirements hereinbefore mentioned may also be obtained by Amolding these blocks of cement beton, reinforced or otherwise, or of any other composition adapted to yield the same result. It is possible to arrange these blocks in such a Way that they rbehave in practice as regards the fixing of the rails exactly like wood blocks. In order to attain this object, the kblock .of cement is combined with one or more pieces or plugs of wood kof small Idimensions and ofzcylindrical or trunfblock c provided with two plugs C C2. The blocks vc being engaged and fixed in one of the cells formed in a sleeper of reinforced cement beton, the plugs C must be at a suitable place for receiving the rail fixing device. f

It has `been hereinbefore stated that the plugs C are cylindrical or truncated conical but of course the truncated conical form would be preferable, because its form itself then is opposed to any vertical displacement of the said plugs or pegs.

Figs. 12, 13 .and l-/l represent in front view and horizontal section several truncated conical plugs C. Some, Figs. 12 and 13, are of polygonal section, the effect of which is to avoid any rotary movement of the plugs after having been inserted. As regards the plug shown in Fig. 14, which is offcircular section, any rotary motion is also avoided by employing a 4notch 0 formed at a suitable point in the heightof the plug, and which is filledwith cement beton at the moment of making the block c. Of course two or more notches 0 may if desired be formed on a plug C. It is interesting to remark that the use of like notches with cylindrical plugs'and plugs of .circular or prismatic section, also prevents any vertical displacement of these plugs in their blocks c. The wood plugs C are cut out from blocks of wood soas to present their fibers either horizontally or vertically, after being inclosed in a block of cement 0, the direction of the said fibers in one or other of ythe said directions being capable of being utilized according to the directions of pressure. Finally these blocks may also be cutout of `blocks formed of strips of wood stuck together and with fibers reversed. The blocks c provided with one ormore plugs C may be employed in all sleepers of reinforced concrete or cement beton provided with blocks of wood, whatever may be the system.

live declare Ythat what we claim is:-

l. A sleeper having cells formed therein, removable :blocks fitting in said cells, inter locking projecting parts on the walls of said cells and said blocks preventing vertical displacement of said blocks, and removable key pieces inserted in said cells :and preventing lateral .displacementof said blocks substantially as described.

f2. The combination of a rail, a sleeper un- In Witness whereof, We have hereunto 10 der said rail, and having a recess extending signed our names this 15 day of June 1908, from under said rail to one side thereof, a in the presence of two subscribing Witnesses.

rail supporting block in said recess and under said rail, a key also in said recess and bearing against said block, said recess being oi a size to permit the key and block to be Witnesses:

i'enioved from said sleeper Without remov- H. C. COKE,

ing said rail. ALPHONSE MEJEAN.

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