US2132890A - Lubricating means for bearings - Google Patents

Description

Oct. 11, 1938. v. A. BARY 2,132,890

LUBRICATING MEANS FOR BEARINGS Filed July 9, 1934 2. Sheets-Sheet 1 Jn yen for Oct. 11, 1938. V/A. BARY 2,132,890

LUBRICATING MEANS FOR BEARINGS Filed July 9, 1934 2 Sheets-Sheet 2 Jn ven for Patented Oct. 11, 1938 PATENT OFFICE LUBRZIOATIVNG MEANS FOR BEARINGS Victor Alexander Bary, London, England, as- .signor to Walter Peyinghaus, trading as Eisenund Stahlwerk Walter Peyinghaus, Egge, near Volmarstein', Ruhr, Germany Application July 9, 1934, Serial No. 734,293 In Germany July 17. 1933 1' Claim. (stats-as) This invention relates to axle bearings for rail journal. usual manner of a feed rod to which feed blades are attached. According to the present inven-' tion, the feeding member comprises a rod-shaped center piece with feed blades arranged thereon,

, the feed blades having the shape of segments of 10 a ring and enlarged in the form of a T over the Width of the rod-shaped center piece. inner edge of the feed blades, which faces the axis of rotation, extends over the feed rod in a length corresponding to at least one half of the width of the feed rod, and. the inner edges of the feed blade, which extend over the feed rod, have with increasing distance from the center of the feed blade a decreasing distance from the axisof rotation.- V Feeding members designed according-to the invention have the special advantage that 'ow ing to the peculiar shape or form'of the feed blade, the lubricant taken up by the feed blade during its passage through the store of lubricant reaches the inner edge of the feed blade when the feed blade. has reached the highest point of its path of rotation and is located above the collecting member for the'lubricant.

This collecting member is usually formed from.

a projection of the bearing brass around'which the feed rod is bent. Thiscollecting member is therefore reached by thelubricant with certainty because owing to the,:peculiarcoursefof g the inner edge of the feed blade extending over the feed rod 2. component of the force of gravity acting on the lubricant draws the lubricant toward the lower corner points of'ithe feed blade. The lubricant is thereby accumulated at points on the inner edge of the feed blade and the force of gravity of this accumulationat points is adapted to overcome theadhesion and cohesion forces with certainty'and ease although the latter forces are known to be very, high in connection with the lubricant. In the caseiof low speeds, the lubricant must drip down with certainty and thereby reachthe 0il. .collecting member in the uppermost point of the path of rotation. V The delivered amounts of lubricant are comparatively large because the T-shaped enlarged feed blade has a comparatively large surface whereby lubricant can be taken up to an adequate extent.

The bend of the feed rod may be; as shown, a less distance from the axis of rotation than the inner edge of the feed blade facing the axis The V bounding edges.

of lubricant during the passageof the feed blade is completely avoided. The feed blade may be kept very thin and provided with sharpened edges. However, the feed rod must be 'comparatively strong 'to take up the centrifugalforces of the feedbladeso that should it pass through the store of lubricant it produces a strong emulsification, oxidation and premature aging of the lubricant. The passage of the feed rod through the store of lubricant was hitherto unavoidable if the whole feed blade had to dip into the store of lubricant. According to the present invention, the dipping of the whole feed blade is effected without it being necessary for the feed rod to dip into the store of lubricant.

v 'of rotation so thatan agitation of the store vehicles with'mechanical feed of the lubricant by a feeding'member rotating with the axis This feeding member consists in the.

, If the feed blades are constructed as polygons andthe arrangement of the corner points of the polygons, differs according to the diiferent feed blades, there results therefrom the advantageous feature that the feed blades cannot assume at certain speed of the axle journal critical states ofequilibrium to which the feed of the lubricant-is subjected. These critical states of equilibrium are produced by the fact that the forces causing; the separation of the lubricant and keeping it against the feed blade can maintain points thev bounding, edges of the feed blades have a different distance from the center of rotation and .a different length so that the centrifugal for' ces'j arenever the same at these The critical conditions of equilibrium cannot occur at the same time in con-v nection with both the feed blades.

In order. to give the feed blades the correct size, it is advantageous to provide a constant ratiobetween the effective feed-blade face and the axle-journal" surface independently of the axle-journal diameter. The surprising fact results therefromthat when keeping this ratio constant the bearing surface always receives the lubricantwhich is required for an adequate lubricationlfa I The drawings show by way of example the construction of an oil feed-rod formed according to the invention,

. Fig. 1 showing a side elevation of the oil feed rod, while Fig. 2 represents a front elevation of the same.

Fig. 3, shows in vertical longitudinal section blades.

. possible for the lubricant store to be injuriously the axis of rotation is gradually reduced toward" the inner apices I8, I9 and 20, 2| so that these apices'are located closer to the axis of rotation than the remaining portion .of the edges of the Incidentally the outer: edges of the blades are situated on the same arc with respect to the axis of rotation. Moreover the distance of any radial line drawn from the inner edge to the outer I edge of each blade is only approximatelyonev half of the width of the rod support I 3. The feed blades are consequently cut back in the direction of rotation at 3, 4, Eand 8 drip-tips I, 8, 9 and It being formedsand the surface of the feed blade beingperpendicular to the rod-face I I, I2 supporting the feed blade The rod-support I3 itself, which may be firmly connected by way of holes 24 with the axlejournal which is not illus-' trated, possesses at I5 and I6 outwardly arched portions which enable a catching member, which is shown in Fig. 3, to be located within rangeof the drippings and threads formed by the feedmember. As. is noticeable particularly from the lower parts of Figs. 1 and 2, the whole of the feed blades I and 2 together with the drip-tips I-IIl can consequently be dipped into the lubricant store I I without the parts II and I2 of the rodsupport, that is the rod-support I3 as such, requiring to dip into the lubricant store. Nevertheless fully developed drip-tips are formed, which cause the lubricant to dripoff with certainty. The lubricant store is consequently traversed only by the feed blades, withoutit being lashed up, emulsified and oxidized.

As is also noticeable from Figs. 1 and 2, the bounding edges I, 'I", 8, 8", 9", 9" and Ill, ill which a form the drip-tips, possess different lengths on the different feed blades. The result of this is that the mutual action betweengravity, forces of adhesion, forces of cohesion and centrifugal'forces, in sofar as they interact to bring about the dripping of the lubricant, take. place differently on the two feed blades, so that always one feed biade effects dripping with certainty when in the case of the other feed blade certain conditions of equilibrium of the said forces have already occurred, the dripping during this time being discontinued, It is also-noticeable that the the resultant forces which lead to the centrifuging of the lubricant arise in the case of the two feed blades in such a different way that one feed blade throws off the lubricant before the other feed blade throws it off.

Finally, Figs. 1 and 2 show that the feed blades are constructed as narrow segments of a ring, so that the paths along which the lubricant slips, measured in the radial direction, are shorter than the paths, along which it is drawn, measured in the peripheral direction. This is worthy of consideration in so far as in consequence of forces of inertia arising in the case of an insufficient ratio between'the paths along which the lubricant is drawn and those aiong which it slips the lubricant is discharged from the feed blades before the latter have reached their position above the collecting member; the lubricant consequently passes back unused into the lubricant store, while lubricant is supplied insufficiently to the bearing surface. Fig. 2 shows that the realization 0f a satisfactory relationship is possible without the fulfilment of the other requirements being disturbed.

The edges I, 1", 8', 8", 9', 9'', ID, ID", 22 and 23 are formed as knife-edges in a manner well known per se, in-order to prevent air from being driven into the lubricant store.

They feature'that the moistened surface. of the feed blades may have a constant ratio to the surface ofthe axle-journal, independently of the diameter of the axle-journal, lies. within the scope of the invention. By means of this feature the supply of the requisite sufficient quantity of lubricant to the bearing surface is always accomplished without troublesome testing of rodshaped feed members of different sizes being necessary.

Theprinciple of the invention is also realized when the faces of the rod-support carrying the feed blades are not perpendicular to the face of the feed blade but are at an oblique angle to the same. With this arrangement, however, there is connected the disadvantage that when the outermost diameter is given the faceo-f the feed bladeis unnecessarily small; it might, without the support having to dip into the store of lubrie cant,be increased by the amount inquestion, if the supporting face of the rod were positioned at right angles to the face of the feed blade.

I claim:

An axle bearing comprising an axle box housing, a bearing brass adapted to receive an axle journal, a lubricant store in said housing, feeding a means adapted tolift lubricant from said lubricant store, saidfeeding means comprising a rodshaped center piece, feed blades on said center piece, said feed blades designed as segments of .a ring and, extending T-shaped across the rodshaped center piece of said feeding means, acollecting member for the lubricant in the annular space swept over by the said feed blades during the rotation of the feeding means, said rodshaped center piece bent aroundsaid collecting member, said bend being at a shorter distance from the axis of rotation than the inner edge of the feed blades facing the axis'of rotation.

VICTOR ALEXANDER BARY.

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