Патент USA US2126668код для вставки
Aug. 9, 1938. ? J. P. RUTH sLIPPER BEARING Filed May 11, 1935 ' 2,126,668 2,126,668 Patented Aug. 9, 1938 UNITED STATES PATENT OFFICE 2,126,668 ` SLIPPER BEARING Joseph P. Ruth, Denver, Colo. ' Application May 11, 1935, Serial No, 21,018 10 Claims. (Cl. MI5-�) This invention relates to improvements in slip panying drawing in which the preferred embodi per bearings, and more particularly to such bear ings as employed in railway locomotives, cars, and the like. In railway locomotive and car construction it is customary to support the frame of the unit on springs that are connected by means of equaliz ment of the invention has been illustrated, and in which: ing levers, which, in turn, rest on the axle bear ing. In order to prevent undue strains the equal izing levers are supported on arcuate bearing sur faces that permit the levers to rock to a limited extent. Whererailway units travel over tracks that are quite crooked, as is often the case in narrow gauge tracks constructed in mountainous coun tries, the axles must be so connected with the Fig. 1 is a side elevation, partly in section, of the side of a railway truck showing the position of the slipper bearings; Fig. 2 is a section taken on line 2_2, Fig. 1; and Fig. 3 is a section taken on line 3-� Fig. 2. In the drawing reference numeral 4 indicates the axle of a railway car truck to the ends of 10 which the wheels 5 are connected. The wheels are of usual construction and form no part of this invention and have therefore been shown in a di agrammatic manner. The axles are mounted for rotation in an axle housing which has been desig 16 nated by reference numeral 6. This axle hous movement transversely of the car so as to adapt ing is also of the usual construction and is pro vided at each end with a substantially rectangu themselves to the curvature ofthe track. It is the object of this invention to produce a tween the guides 8. The lower ends of the guides . rigid frame that they will have considerable lar portion l that is located for reciprocation be slipper bearing that shall be especially well adapt are connected by a frame member 9, while the ed for use with railway units that travel over upper ends thereof are attached to or connected with a frame member I0. The weight of the car crooked and uneven railway tracks and which, in addition to the usual rocking movement, shall also be so constructed that the parts can slide relative to the axle housing so as to permit the wheels to properly adjust themselves to the rails without imposing undue strains on the bearings. This invention, briefly described, comprises a 30 bottom block that is adapted to� rest on the upper surface of an axle housing and which has its top provided with a concave cylindrical surface hav ing an axis of curvature extending in the direc~ tion of the length of the axle housing. Supported on the bottom block is a second 35 block having an under surface formed from a convex cylindrical surface of the same curvature as that of the concave surface in the bottom block. The upper surface of the second block is provided with a concave cylindrical surface the axis whereof is perpendicular to the axis of the convex under surface. The spring supporting and equalizing levers, which are usually bowed, are provided on their under surfaces with down ' wardly extending projections having lower ends formed with convex cylindrical surfaces that fit the concave cylindrical surfaces in the tops of the second blocks. This construction permits the sec body and its load rest on the frame member I0 and the latter is provided at spaced intervals with downwardly-extending posts I I that rest on the springs I2, The ends of the springs are con nected by means of stirrups I3 with the ends of spring supporting and equalizing levers I4. The levers I4 are preferably bowed and positioned with their convex sides~ upwardly. The upper surface of each lever is provided with a recess I5 like that shown in Fig. 2 and these recesses serve to receive the frame members Ill. Each of the spring supporting levers is provided on its lower side with a downwardly-extending projection I6 terminat ing in a convex cylindrical surface Il. Resting on the top of the rectangular portion 'I at each end of the axle housing is a bottom supporting Ablock I8. The top of this block is provided with 40 a concave cylindrical surface I9 having an axis of curvature extending in the direction of the length of the axle housing. The bottom support ing block has its base portion extended outward ly a short distance, as designated by reference numeral 20, and extended upwardly from the por tion 20 are vertical walls 2l that form with the portion 20 and thesides of the block .a rectangular ond block to rock on the bottom block and also slide in respect thereto and at the same time channel for the reception of oil or grease. Sup ported on the bottom block is a second block 50 permits the spring supporting levers to rock and slide with respect to the second block. Having thus briefly described the invention, the which has been designated by reference numeral 22 and which has an under portion formed by a cylindrical surface of the same curvature asA the concave cylindrical surface ,in the bottom block I8. The_top of the second block is provided with 55 same will now be described in detail, and for this purpose reference will be had to the accom 2 2,126,668 .a concave cylindrical surface 23 having an axis of curvature perpendicular to the axis of curvature of the convex bottom surface. The radius of curvature of the concave cylindrical surface in the top of block 22 is the same as that of the convex concaved seat, a weight-supporting shoe formed cylindrical surface I1 at the lower end of the projection I6. A cover 24 is applied to the walls 2I and is provided at its center with an opening surrounded by the vertical wall 25. The spring supporting levers are provided with downwardly terposed in freely floating, self-positioning rela angularly movable cooperation with said seat and extending flanges 26 that surround the projec tions I6 and the vertical wall 25. cylindrically concaved seat, a weight-supporting with a cylindrically convexed bearing surface de pending for operative association with said seat, the cylindrical axes of said seat and shoe being perpendicularly related, and a bearing block in Ul tion between and contoured for both linearly and shoe. 3. In a truck, a slipper bearing comprising a shoe formed with a cylindrically convexed bear When the parts above described are assembled, , ing surface depending for operative association they form an assemly like that shown in Fig. 1 and in greater detail in Figs. 2 and 3. It will be apparent that since the frame is rigid and since it is necessary in going around steep curves for the wheels to move transversely with respect to the frame, the bottom block I8 that is secured to the .axle housing will move with respect to the block 22 and this motion is per mitted by the two cylindrical bearing surfaces freely 駉ating, self-positioning relation between and contoured for both linearly and angularly movable cooperation with said seat and shoe, wheeled means supporting said seat, and a frame resiliently carried by said shoe. 4. A slipper bearing comprising a seat formed 20 with an upwardly-opening, cylindrically-con caved bearing. zone, a weight-supporting shoe having axes of curvature extending in the direc formed with a cylindrically convexed bearing sur tion of the length of the axle housing. If lone vaxle moves vertically with respect to the adjacent face depending in spaced, axially-perpendicular axle, this produces a rocking action of the spring supporting and equalizing levers I4. Since these levers rest on the second block 22, this rocking action will cause the block 22 to rock with re 30 spect to the block 'I8 about the axis of the cylin drical bearing surfaces. If one side of the truck moves downwardly or upwardly with respect to the other side, this willrproduce a rocking motion between the surfaces I?I and 23. It will be seen from the above that when rail way units are provided with slipper bearings like those illustrated on the drawing and described herein, the .axle housings can move freely with re spect to the frame without producing any severe 40 strains because the universal movement pro vided by the slipper bearing described permits any and all adjustments to be automatically ef fected without strain. Particular attention 'is called to the fact that relation with the bearing zone of said seat, a 25 bearing block interposed in freely floating, self positioning relation between and cooperatively associating said seat and shoe, and cylindrically contoured areas on said bearing block for linearly and ,angularly movable bearing cooperation with 30 -the contoured surfaces of and for retention of said block between said seat and shoe. 5. A slipper bearing comprising a seat formed with an upwardly-opening, cylindrically-con caved bearing zone, a bearing block formed with a cylindrical under portion freely 駉ating within and cooperating for relative linear and angular motion with the bearing zone of said seat, a cylin drically-concaved bearing Zone formed on said block in vertically-spaced, axially-perpendicular 40 relation with the bearing zone of said seat, and a weight-supporting shoe depending to a cylin drically-convexed bearing surface seated in float~ ing relation in and cooperating for relative linear Ithe .axle housing can move transversely with re an angular motion with the bearing zone of spect to the frame due to the?sliding action per mitted -between the two cylindrical surfaces on the bottom blockand block 22. Attention is also directed to the fact that the cylindrical surfaces 籌?I can -slide with respect to the block 22 and also 'rock with respect thereto, and in this way- practically every -conceivable ad justment can take place without producing severe strains on any part. By filling the chamber be tween the walls >2I with oil or grease, the parts will always remain properly lubricated and the said block, whereby said block is mounted to float in self-positioning relation and for accommoda tion of relative displacement between said seat flange -2li and wall 25 serve as means to prevent dust and dirt from entering the chamber where 60 with said seat, a bearing block interposed in `and shoe. 6. In a truck, a slipper bearing comprising a Y. seat 'formed with an upwardly-opening, cylin dricallyeconcaved bearing zone, wheeled means supporting said seat, a bearing block formed with a cylindrical under portion engaging within and cooperating for relative linear and angular mo tion with the bearing Zone of said seat, a cylin drically-concaved bearing zone formed on said block in vertically-spaced, axially-perpendicular the bearings are located. ?relation with the bearing Zone of said seat, a It is, of course, possible to turn the several cylindrical bearing surfaces through an angle of ninety degrees and get approximately the same weight-supporting shoe depending to a cylindri cally-convexed bearing surface seated in and co operating for relative linear and angular motion with the bearing zone of said block, and a frame resiliently associated with said shoe. effects and such a construction is considered to be a mechanical equivalent- of the one illustrated, 65 described and claimed. I claim .as my invention 1. A slipper bearing comprising a cylindrically 7. The combination with a wheeled support and a rigid frame carried by and for limited motion relative to said wheeled support, of va slipper bear concaved seat, a Weight-supporting shoe formed ing operatively associating said frame and with a cylindrically convexed bearing surface de 70 pending for operative association lwithA said seat, and> a' bearing block interposed inv freely iloatin'g, self-positioning relation between and contoured for b'oth'linearly and ?angularly movable coop eration 'with said seat and shoe. 2. A slipper bearing comprising a. cylindrically wheeled support, said bearing comprising a seat -in~fixed`relation with said wheeled support, a c bearing block engaging and cooperating for rela tive linear and angular motion with said seat, a weight-supporting shoe engaging and cooperating with' said -block for relative linear and angular lmotion in paths perpendicular to those of the 2,126,668 3 resiliently interconnecting said shoe and rigid relative shiftable telescoping relation with said upstanding flange to complete an enclosure for frame; together with guide means operatively en said bearing assembly. travel between said seat and block, and means gag韓g between said wheeled support and rigid l0. In a slipper bearing having a 駒ed bearing frame. 8. A slip-per bearing comprising a seat, a bear ing block engaging and cooperating for relative linear and angular motion with said seat, a seat, a bearing block shiftably cooperating with weight-supporting shoe engaging and cooperat said seat and a weight-supporting shoe shiftably engaging said block, a base in fixed relation with and extending marginally beyond said seat, a wall rising from margins of said base in sur rounding relation with the bearing assembly to ing with said block for relative linear and angu lar motion in paths perpendicular to those of the travel between said seat and block, and housing elements in fixed relation with said seat and shoe, sembly, said reservoir wall terminating in an up-` respectively, cooperating in relatively shiftable relation to enclose said bearing assembly. bearing block and shoe, whereby the shiftable surfaces of said bearing assembly may be fully submerged in lubricant retained in said reservoir, 9. A slipper bearing comprising a seat, a bear ing block engaging and cooperating for relative linear and angular motion with said seat, a weight-supporting shoe engaging and cooperating with said block for relative linear and angular motion in paths perpendicular to those of the travel between said seat and block, a housing ele ment in fixed relation with and surrounding said seat and formed with an upstanding flange sur rounding and spaced from said shoe, and a hous~ ing element in fixed relation with said shoe and formed with a depending flange cooperating in define a lubricant reservoir enclosing said as per plane above the contact Zone between said a removable cover for said reservoir formed with an opening arranged to shiftably receive said shoe, an upstanding marginal flange de駈ing said opening, and a closure element flxedly carried 4 by said shoe and formed with a depending flange cooperating in relatively shiftable telescoping re lation with said upstanding flange to close said reservoir against entrance of foreign matter therein. JOSEPH P. RUTH.