US1498824A - Apparatus for making railway sleepers - Google Patents

Description

Flled Dec T WEYMERSKIRCH APPARATUS FOR MAKING RAILWAY SLEEPERS June 24 1924.

Patented ,inne 2-, i924.

FFHCE.

TEEGDOR VE-YJIERSKIRCH, OF DIFFERDANGE, LUXEMBURG.

APPARATUS FOR lizKll'G RALWAY SLEEPERS.

Application filed December 14, 1923.

To all wiz om may concern Be it known that I, Tistnonon lVnvMnnsnniorr, engineer,'a subject of the Grand Duchess of Luxemburg, residing at Differdange, Grand Duchy of Luxemburg, Rue de lAcier (no number), have invented certain new and useful Improvement in Apparatus for Making Railway Sleepers, of which the following is a specification.

The present invention relates to a process of manufacturing iron sleepers, whereof the downward bent edges of the holes are, with a view of reinforcement, flanged in a second operation and then upset.

it has been found, in the manufacture of iron sleepers, that it is unsatisfactory to stamp the holes out, whether hot or cold, because the fibers of the laminatedmetal are cut through and the sleeper is weakened at the points receiving the greatest stress. Owing to the continuously changing work` ing stress, the edges of the holes are torn, more especially at the corners and the sleeper becomes unserviceable.

lt has been proposed to Velin'iinede this drawback by bending the borders of -thc holes downward like a collar instead of stamping them out. But this does not prevent the formation of rents because the libers of the laminated metal remained unprotected against the pulling stresses.

According to the present invention, the downward bent edges of the holes are flanged in a second operation and then upset. In this way, the sleeper is considerably strengthened at the rail seat and they possibility of breaking of the edges of the holes therein minimized.

In the accompanying drawing- F ig. l shows the working method diagrammatically.

Figs. 2 and 3 show on an enlarged scale, sections through the punching tools before and after the operation.

Fig. 4e is a section through the flanging tool.

Figs. 5 and 6 are sectional and plan views, respectively, of the sleeper.

The rolled bar coming from the rolling mill is out, in the well known way, to the necessary length and is fed by means of a lifting device t (Fig. l) to a flanging machine Z) where it is flanged. are then heated in a furnace c to a uniform temperature, in order to assure the eXact- The sleepers' Serial No. 680,748.

distances of the `holes to be punched in accordance with vthe gauge of the track.

From the furnace c, the sleepers travel into va press d -where the necessary number of holes vis punched therein. The tools of the press are regulated exactly to the temperature the sleeper has receivedin the'fur nace so that, after complete cooling of the.

sleeper, the distance between the holes will be exactly thatof a track-gauge.

rThe punching tools mounted on the ram of the press d (Figs. 2 and 3) consist off a punching and flanging mandrel f, the yflanging female die g and the snap headdie 7L. The sleeper t having been placed by means of the lifting device a on `the table of the press d, the ram @goes down with the punch ingand AHanging mandrel f on the piece to be worked and .cuts it open at the places where the holes are to be produced, asshown in dotted lines in Fig. 2. k"Up to then .the snap head die /L has served as anvil,.in.order to prevent `4the material to :be worked ,from being torn.

The snap head die It now moves downward, at a somewhat greater speed than the ram, so that the mandrel f vmay moveto the position shown in Fig. 3. The mandrel f continuing to move downward, vthe cleft wings j are bent into :the femaledie-g and the opening-Vis thus produced infthe sleeper forrthe tenons of bearing plates or for the clip bolts.

rlhe snap head die L is provided With a hole n, enabling the point of the mandrel f to completely pierce the sleeper. Material eventually falling off, during the operation, may fall through the hole u and the groove o of the wedge lc. This wedge ,7c may also be replaced by any other suitable device, for instance eccentrics, cam discs and the like.

During the subsequent upward movement of the ram e, the snap head die also raises under the action of the wedge c and pushes out of the female die g thev edges of the holes y' which have been pressed out.; the sleeper t is lifted, carried by the lifting de vice a. off the press-table z' (Fig. l) and placed into the tipping device Z, ahead of it. This tipping device turns the sleeper through 180 so as to invert it.

At the next stroke of the lifting device a the sleeper' is placed on the table m of the press n. l/Vhile the ram 0 to which are fixed the /pressing and the hanging tools (Fig. Ll) moves downward, the mandrel j?, the dimensions of which correspond exactly with the desired transversal section of the holes, enters the aperture and the presser plate g presses the edges of the holes down" into the position r.

The mandrel p acts in this case as a gauge guided exactly by the female die. The mandrel p and the presser plate Q as well as the female die s are mounted on their saddles, in the axis of the sleeper, so as to be able to move to and fro `for a few millimeters, so that the distance between the holes of the sleepers may not be altered by a too rigid connection of the flanging tools. On the contrary, the tools Awill adapt themselves automatically to the predetermined distances of the holes. Simultaneously with the Hanging, the sleep er z5 receives, by means of dressing tools mounted on the ram o, a slight pressure over its whole length, so that parts that might have been bent are straightened. The sleeper which is now finished is then lifted in the known manner ofi? the table m, by means of the lifting device and placed on an automatic conveyer of any known construction. r:Chis conveyer carries the sleepers to the stock yard or, if they are to be tarred into a tarringbath. The supports for the sleepers, on their way between the flangingmachine Y) and the press 'n have preferably a shape corresponding to that of the sleepers or vthey are shifted exactly in the same way by a shifting device in orde-r to assure the exact position of the sleepers after each stroke and thus avoids wrong positions. A

Of course, the pressing out, according to Figs. 2 and 3 could just as well be carriedY out simultaneously with the Hanging of the extremities of the sleepers, but this would be prejudicial to the exactness of the punching.

rlhe whole process requires but little at tendance because all the movements are cari ried out automatically by the movements of the ram of the press or forcibly by a separate driving` gear. @wing to the siniplieity andr to the solidity of the tools, disturbances are rather out of question. 'lhe product is a first class one all the operatic s being carried out at a warm temperature.

The inventioni is also applicable to all important iron buildings such as bridges, ov rhead cranes, halls and so on whierc1 for the sake of security, the holes for the rivets and screws may not be pressed out` but only drilled. Y of the edges of the holes, while the pie are warm, also results in a more resistan` material than pieces with drilled holes and the holes produced according to the present invention will resist the greatest stresses.

Having now fully described my invention, what l claim and desire tol secr-.ire by Letter Patent is:

ln an apparatus of the character described, a device for forming openings in articles, al device for upsetting the edges of the openings, said devices being sp ed apart, and means intermediate the devi if for receiving articles operated upon by the first device and inverting them for delivery7 to the second device.

In testimony whereof l affix my signature in presence of two witnesses.

THEODOR VE'YMERSKIRGH.

l/Vitnesses CHR. BENNOUR, M. Esrrns.

The bending or Hanging

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