US1407452A - Car truck - Google Patents

Description

E. W. WEBB'.

CAR TRUCK.

APPLmATsoN FILED Nov. l2. |921.

Patented Feb. 21, 1922.

2 SHEETS-SHEET I.

ZWQW QINM.

E. W. WEBB.

CAR TRUCK.

APPLxcAIloN man Nov. x2. 192|.

1,407,452. Patented Feb. 2l, 1922.

2 SHEETS-SHEET 2.

usaran sra'ras EDWIN W. WEBB, or CHICAGO, ILLINOIS, risers-NOR To STANDARD Cnn Tanon COMPANY, or CHICAGO, ILLINOIS, A CORPORATION or NEW .Inasnr CAR TRUCK.

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Specicaton of Letters Patent.

Patented Feb. 2i, ity/*2.

Application led November 12, 1921. Serial No. 514,586.

To all whom it may concern:

Bc it known that I, EDWIN lV. lln, a citizen of the United States, residing at Chi# cago, in the county of Cool; and State of Illinois, have invented certain new and useful Improvements in Car Trucks; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same. Y

This inventiton relates to a car truck, and particularly, to a truck such as used for railway cars.

' Considerable trouble has been experienced in railway trucks, due to the excessive wear of the truclr bolster and the side frame bolster columns, especially on the type of the truck in which the bolster has a vertical spring action. It is desirable, therefore, to have the greatest possible area of wearing surface between the bolster and bolsterV columns.

t is an object of this invention, therefore, to provide a truck structure in which a large area of wearing surface is obtained, particularly, in connection with the type of the side frame now widely used, which has the top or compression member of inverted U-shape in cross section.

It is a further object of the invention to provide this additional wearing surface by extensions projecting from the top and bottom sides of the bolster' andto so arrange these projections that they will not interfere with thc movement of the bolster kor other parts of the truck. lThese and other objects and advantagcsof the invention will more fully appear from the following description made in connection with the accompanying drawings in which like reference characters refer to the same parts throughout thodiiiereut views, and in which Y.

Fig. l is a vertical centralsection through one end of the truck; v

Fig. 2 is a vertical section taken on the line 2,-2 of Fig. 1, but showing the side frame in end elevation; Y

`Fig. 3 is a section taken on the line 3 -3 of Fig. 2; Y

Fig. at is a bottom plan view of one end of the bolster; and

Fig. 5 is a partial sec-tion similar to that shown in Fig. 3, but showing a modification. i

Referring to the drawings, the central part of the side frame l is shown having the holster columns ll. in the construction of the present truck, these bolster columns are preferably made somewhat wider than usual, the increased width over the other parts of the side frame being clearly indicated in Fig. 3. VThe side frame has its top portion or compression member of inverted tl-shape in cross section, as shown at l. This type of cast steel side frame is now widely used. The bolster 2 extends, as usual, between the bolster columns and is provided at its outer end with the projecting lugs 2l forming guides or stops to limit the endwise move ment thereof. The bolster is formed on its bottom surface with recesses to receive and retain the roller bearings 3 which are, in turn, supported upon the usual spring cap or plated which is, likewise, provided with roller receiving' surfaces and intermediate ribs, as clearly shown in 3. The plate l is supported upon a plurality of coiled springs 5 which are, as usual, seated upon the bottom part of the side frame or the spring plank or tie member extendingY across the same. 4

The bolster 2 is shown as of box section, the sides of which form the wearing surface for contacting with the bolster columns, and in accordance with the present invention, an upwardly projecting' extension 2IJ is provided at each sido of the bolster which is shown connected to the top thereof by a central reinforcing rib. The extension 2h of such width longitudinally of the bolster as to be received in tho recess of the U-shaped section l" of the side frame. When the truck is being assembled therefore, this extension will be received in said recess, thus giving ample room for tho assembling operation. Normally, the extension 2*' will be located so that its top edge will pass below the bottom of the U-shaped section so that there willbe no interference with the usual endwise inovement of the bolster. In addition to the upwardly projecting extension, the bolster is also provided at each side, with a downwardly projecting extension 2c forming a continuation of its wearing surface. As shown in Fig. 2, the spring cap t has upwardly projecting flanges ia at its sides forming the retaining means for the rollers and these flanges are arranged to be disposed inside of the extensions 2c. The cap or plate 4, however, is, at its end portion, provided CTI embrace the sides of the bolster colnn'insand Vlimit the movement of the platerelatively thereto.Y The guide lugs are sufliciently spaced to perinitjabout one and one-eighth inches of lateral movement in either direction for the average sizetruelt.V lt Vwill be noted that the extension 2c Apass down Vbetween the guide .lugs 1lb and said extensions do not interfere in any way with the movement-s of the pla'te or cap l.

lf the bolster columns are not made with extra width, as shown in'l liigsqi and 3, the extensions 2"" can still be providedV on the ends of the bolster and the springl plate constructed-,hs shown at 6 in Fig. o.' ln this construction, the lugs Gix corresponding to the lugs 1l" in Fig. 3, are formed to extend or` project inwardly to contact with the sides of the bolster column, thus forming'a recess Gb in which the downward extension 2C of the bolster is d`isposed. j

.From the above description itis seen that applicant' has provided a truck with a large Vextent of wearing surface between the bolster and bolster columns and this additional wearing vsurface is provided without intertering in any way with the desired Inoven'ients of thetruclr parts; frs stated, the structure used has the popular design of cast steel truck side frame having the inverted U section at the top. The additional wearing surface provided also does not in any way interfere with the assembling operation. A truc'lr constructed according to the present invention will have a much longer life than one having the smaller wearing surfaces.

It will, of course, be understood that various changes may be made in the form, details and proportions of the parts without departingfrom the scope of applicants invention, which, generally stated, consists in the matter shown and describedand set forth in Vthe appended claims.

VV'hat is claimed isf l. VA car truck comprising a side frame having its compression member of inverted U shape in cross section, and having bolster columns, a bolster having a wearing surface extensionV projected upwardly at the side thereof and adapted to be received in said lil-shaped section of the side Vframe wl en the truck is assembled.

2,. The structure set forth' in claim 1said' co-operating therewith, said latter surfaces comprising downwardly projecting exten- Y sions v'at each .side of said bolster projecting below the body of the bolster between the bolster columns.` j

il car truclr comprising a siderframe having bolster columns, a bolster movable therebetween and Y having estensione disposedbetween the bolster columns and projecting below the line of the main bodyfof thebolster adjacent said columns, said projections forming extended wearing surfaces adapted to contact with'tlie wearing surfaces'V of the bolster columns, a spring supported roller carrying plate for supporting said bolster,the sides of said plate being disposed between said extensions and below said line.

6. il car truck having bolster columns provided with` guiding and wearing surfaces, and a bolster ofbox section Vhaving' wearing surfaces co-operating therewithand comprising' ai downwardly extending projection at I each side of said bolster which projects below the bottom of said box4 section.

7. A car truck comprising a side frame" hai-'ing bolster columns, abolster vertically and longitudinally movable Y therebetween having wearing surfaces at the sides thereof comprising downwardly projecting extensions disposed between the bolster columns and extendingV below the main side walls of the bolster body in the cross plane ofsaid columns, a plurality of springs supported on the side frame, a cap platesupportedon said springs, and a plurality of rollers supported en said cap plate for supporting said bolster, said cap plate having upwardly extending flanges at its side portions for retaining the rollers, said flanges being disposed between said downwardly projecting extensions ofV the bolster whereby endwise movement of the bolster is permitted.

8l. A car truck comprising a side frame having its upper member of inverted U shape `in cross section and having bolster columns, a bolsmr vertically and longitudinally movable between said columns having wearing surfaces at its sides comprising upwardly and downwardly projecting extensions, aspring cap carryingrollers for supporting said bolster and having guide lugs at its ends embracing the sides of said bolster columns, the upwardly projectingV extensions of the bolster being adapted-to enter said lli-.shaped section when the truck is assembled and the downwardly projecting extensions'of the bolster being adapted to pass between said guide lugs on the spring cap".V

nnwin w. wenn.

ln testimony whereofl affix mysignature.

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