US792482A - Car-truck. - Google Patents

Description

No. 792,482. PATENTED JUNE 13, 1905. J. G. WANDS.

CAR TRUCK.

APPLICATION FILED MAR.25,1904.

3 SHEETS-SHEET 1.

Fay. l. 5 E35 PATENTED JUNE 13; 1905. J. G. WANDS.

CAR TRUOK.

APPLICATION FILED MAB.25,1904.

3 SHEETS-SHEET 2.

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PATENTED JUNE 13, 1905.

J. G. WANDS.

GAR TRUCK.

APPLICATION FILED MAR..2'5,1904.

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Patented June 13, 1905.

ATENT OEEicE.

JOHN C. IVANDS, OF ST. LOUIS, MISSOURI.

CAR-TRUCK.

SPECIFICATION forming part of Letters Patent No. 792,482, dated June 13, 1905.

To all 1071,0121 it may concern.-

Be it known that I, JOHN G. VANDS, a citizen of the United States, residing at St. Louis, Missouri, have invented a certain new and useful Improvement in Car-Trucks, of which the following is a full, clear, and exact description, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, forming part of this specification, in which Figure 1 is a plan view, partly in horizontal section, of a portion of my improved cartruck. Fig. 2 is a side elevational view, partly in vertical section, of the same. Fig. 3 is a cross-sectional view through one side of the truck. Fig. 4 is a top plan view of one portion of the truck-transom, showing the side bearing in position thereon. Fig. 5 is a side elevational view of the transom. Fig. 6 is a sectional view on line 6 6 of Fig. 3. Fig. "(shows a modified form of transom. Fig. 8 is a vertical sectional view through the side bearing, showing a modified form of support therefor; and Fig. 9 is a sectional view on line 9 9 of Fig. 8.

This invention relates to a new and useful improvement in car-trucks, the object being to provide an antifriction-support whereby the car is carried at its corners instead of at its center, as has heretofore been commonly practiced.

Another object is to provide means to take up the side motion of the car, so as to relieve the flanges of the wheel from lateral strains, to which they have heretofore been subjected.

Another object is to simplify the construction of car-trucks, so as to reduce the cost of manufacture thereof, and also to make a strong and durable truck which will stand wear well under the hard service to which it is subjected.

In the drawings, 1 indicates the wheels, mounted upon the usual axles 2, whose ends are received in the journalboxes 3. The type of side frame shown in the drawings is that which is commonly employed, the same comprising a top arch-bar 4, bottom arch-bar 5, and a tie-bar 6.

7 represents the column-bolts.

Referring now to the construction shown in Figs. 1 to 6, inclusive, 8 indicates an end casting (see particularly Fig. 5) which is recessed in its bottom and top walls to receive the top and bottom arch-bars, respectively. This end casting is preferably provided with perforated lugs 9, forming brakehangers. Casting 8 is provided with springseats on its bottom connecting-wall, upon which are arranged the supporting-springs 10. The casting 8 is substantially U-shaped, and between its upper members is secured the transom 11, preferably in the form of an I-beam, whose flanges are received in lugs forming seats 12, projecting from the inner faces of the end casting 8. The outwardlyprojecting flanges of the I-beam transom are cut away to take in the top arch-bar. The flanges of the transom are riveted to the end casting. Supported upon the springs 10 isa spring follower plate 13, which followerplate is provided with lateral stop projections 14, which serve to limit the movement of an antifriction-carrier comprising a frameplate 15, in which are mounted rollers (or balls) 16. This antifriction device, comprising the frame 15 and its rollers (or balls) 16, is free to move laterally across the spring-follower 13, the said antifriction device being arrested at its extreme movement in either direction by the stop-lugs 14. To prevent endwise motion of the rollers, the frame 15 is provided with lugs 15, (see Figs. 1 and 2,) which lugs cooperate with the vertical walls of the end casting and hold the frame in position. 17 indicates what I will term a colnmn-base, whose under face is designed to cooperate with the antifriction device 15 16. This column-base is provided with extensions 18, (see Figs. 1' and 2,) designed to cooperate with the inner faces of the end casting and serve as guides to prevent the columnbase from tilting or canting in its movement.

It will be noticed with respect to the parts above described that the spring-follower 13 has a vertical movement, due to the compression and expansion of the springs 10, and the column-base has a corresponding movement in addition to an ability to move laterally on the antifriction devices interposed therebetween and the spring-follower. 1 have designated the casting 17 as a column-base, because said casting forms the base of a supporting-column of which the blocks 19 are members and the casting 20 is the cap. There are preferably six blocks 19, three at each side of the top arch-bar, and said blocks have their upper and lower ends seated in sockets in the column base and cap, so as to form a rigid structure. Tying means may be employed to secure the cap and base sections together and to clamp blocks 19 in position. The column-cap 20 is provided on its upper face with a curved track-plate 21, whose edges are described from center of the swivel-pin of the truck. This curved track-plate supports and cooperates with an antifriction side bearing comprising a nested roller 22 and a frame-piece 23, the said frame-piece having hooked extensions underlying the edges of the track-plate, so as to prevent displacement of the side bearing. The bolt-heads, which are used at the end of the track-plate to secure the same in position, serve to limit the travel of the side bearing, which side bearing is free to move the length of its track-plate without restraint. 24 indicates the body-bolster or transom, which is here shown as a casting having abutments 25 extending down on each side of the column-cap 20, said abutments being designed in the lateral motion of the car to contact with the column-cap and carry the column (on its antifriction-support) laterally with the car-body. The body bolster or transom 24 is also provided with a track-plate 26, designed to cooperate with the antifriction side hearings for well-understood reasons. The body bolster or transom may be provided with seats for the longitudinal sills of the car and in addition carries a swivel-pin 27 at its center, which is designed to cooperate with a resilient means employed for centering the car-body with respect to the truck after lateral displacement. Neither the transom 11 or the body bolster or transom is provided with center-bearings; but the swivelpin 2'? is used in place of the king-bolt, said swivel-pin passing through a laterally-elongated opening 28 in the truck-transom, the web of which at this point is reinforced by a flanged strengthening-casting 29. 30 indicates a spring-bar which receives the lower end of the swivel-pin 27. This spring-bar is provided with abutments 31 and 32, which abutments cooperate with spring-followers 33 and 34:, arranged in a spring-housing In operation it will be seen that for ordinary service the supporting-springs 1O cushion the car-body, so that said body is yieldingly supported at its four corners upon the trucks, the side bearings transmitting the load at each corner of the car to the columns, thence through the antifriction devices to the springs, and to the side frames of the truck. The transom 11 serves as a rigid connecting member between the side frames of the truck, and its web is cut out, as shown in Fig. 1, with laterally-elongated openings designed to permit the passage of the column-base 19. In ordinary service when the trucks take a curve the swivel-pin 27 serves as a pivot or axis of movement, the antifriction side bearing permitting the trucks to swing without binding or cramping the flanges of the wheels against the rails. Should the momentum, however, be such as to cause the body of the car to sway laterally, the swivel-bolt 27 will carry with it the spring-bar 30 and compress each spring 36, which springs will absorb and resist said swaying motion and prevent the shock being communicated to the side frames of the trucks. Lateral movement of the carbody will cause the abutments 25 to bodily move the supporting-columns, with the body, over the antifriction devices 15 16 without subjecting the rollers of the side bearings to longitudinal strains.

The springs 36 are duplicated on each side of the swivel-pin, and thus the lateral motion of the swivel-pin meets opposition from both springs, which are put under joint compression in the following way: Referring to Fig. 3, it will be seen that with the spring illustrated movement of the spring-bar 30 to the left will cause the outer abutment 32 to leave the spring-follower 34, the abutment 31 forcing the follower 33 to compress the spring 36. The action of the companion spring would be the opposite, to Wit: 'The outer abutment 32 would pick up its cooperating spring-follower 34 and compress its spring against the inner spring-follower 33.

It will be noticed with respect to the abovementioned arrangement of springs that both springs on each side of the swivel-pin are placed under compression when the car-body moves laterally. This I consider important, as it is possible to use much lighter springs than would be the case were the springs arranged in tandem. in which event only one of such springs-to wit, the one in advance of the direction of movement of the car-bod W would be compressed when said body moved laterally. For the sake of distinction I. will describe the arrangement of springs shown in the accompanying drawings as a multiple arrangement, because the springs on both sides of the swivel-pin are compressed upon the lateral movement of the car-body, to distinguish such arrangement from tandem springs, which are old and in which tandem arrangement only one spring is compressed when the car-body moves laterally.

Referring now to Fig. 7, I have shown a transom in the form of a casting 37, which casting embodies in an integral structure What has been described as being comprehended in the end castings 8 and the I-beam transom 11. It is notdeemed necessary to describe the details of construction of this casting 37, as the same is obvious from an examination of the drawings, the several parts of the casting readily suggesting uses and adaptations which have heretofore been described.

Referring now to Figs. 8 and 9, the modification here illustrated is found in the changed construction'of the supporting-column, the same in these figures being designated by the reference-numeral 38. Column 38 is a casting having its cap-piece and supporting members cast integral with a space between the same for the passage of the top arch-bar of the truck, the said supporting members being connected at their bottoms and being seated in the column-base, as heretofore described. In this construction it will be obvious that to remove the columns the side framing of the truck would have to be dismantled, while in the construction shown in Figs. 1 to 6, inclusive, the column can be removed and repairs made, such as introducing new support and springs, without dismantling the entire side frame.

I am aware that minor changes in the construction, arrangement, and combination of the several parts of my device can be made and substituted for those herein shown and described without in the least departing from the nature and principle of my invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a car-truck, the combination with the members of aside frame, of an end casting provided with an integral spring-seat, and a transom seated in lugs projecting from the inner faces of the end casting, said transom being secured to said end casting; substantially as described.

2. In a car-truck, the combination with the members of the side frames, of U-shaped end casting providing seats for said members and having lugs in which a connecting-transom is seated, and an I-shaped transom riveted to said end castings; substantially as described.

3. In a car-truck, the combination of supporting-springs, a spring-follower, a column which extends upwardly on each side of, and above, the top arch-bar, and an antifriction device arranged between said column and the spring-follower; substantially as described.

4. In a car-truck, the combination with a supporting-spring, a spring-follower having stop-lugs at its side edges, a column which extends upwardly on each side of, and above, the top arch-bar, and an antifriction device interposed between said spring-follower and said column, the movement of said antifrictional device being limited by said stop-lugs; substantially as described.

5. In a car-truck, the combination with supporting-springs, a follower, a column, an antifriction device interposed between said column and spring-follower, and guiding-lugs at the edges of said antifriction device; substantially as described.

6. In a car-truck, the combination of supporting-springs, a follower, a column, an antifriction device interposed between the column and spring-follower, means. on the follower for limiting the movement of the antifriction device, guiding-lugs on the antifriction device, and guiding-lugs on the column; substantially as described.

7. In a car-truck, the combination of supporting-springs, a follower, a column composing the base, the cap, and supporting members, and an antifriction device interposed between the base member and the spring-follower; substantially as described.

8. In a car-truck, the combination of supporting-springs, of a spring-follower, an antifriction device arranged to travel on the spring-follower, means for limiting the dis tance of travel of said antifriction device, a column-base cooperating with said antifriction device, column-supporting members, and a column cap-piece, said cap-piece being arranged above the top arch-bar of the truck; substantially as described.

9. In a car-truck, the combination of a bottom arch-bar, ofa spring-seat carried thereby, supporting-springs on said spring-seat, a spring-follower, an antifriction device arranged on the spring-follower, a column-base cooperating with said antifriction device, column-supporting members carried by said base, a top arch-bar, a column-cap cooperating with the column-supporting members and arranged above the top arch bar, and an antifriction side bearing mounted to travel on said column-cap; substantially as described.

10. In a car-truck, the combination of supporting-springs, 'a laterally-movable column, an antifriction device for supporting said column and permitting its movement in a lateral direction, and a body bolster for engaging said column and moving it laterally with the car-body; substantially as described.

11. In a car-truck, the combination With a yieldingly-supported column capable of lateral movement, of an antifriction side bearing carried by said column, and means on the car-body for engaging said column and moving it laterally with the carbody; substantially as described.

12. In a car, the combination with trucks having spring-supported columns capable of lateral movement, of antifriction side bearings carried by the said columns, and means on the car-body for engaging the columns and moving them laterally; substantially as described.

13. In a car, the combination with trucks having spring-supported columns, of antifriction side bearings carried by the columns for supporting the corners of the car, means on the car-body for engaging and moving said columns laterally with the car-body,said means permitting the trucks and their carried columns to swing in the usual manner, and means for centering the car-body with respect to the trucks; substantially as described.

14. In a car, the combination with trucks for supporting the car-body, of springs arranged in multiple, and means for compressing all of the springs during lateral motion of the car-body in either transverse direction so as to prevent a shock being communicated to the truck side frames; substantially as described.

15. In a car, the combination with trucks for supporting the corners of a car-body, of springs arranged in multiple for resisting the lateral motion of said car-body, said means centering the car-body with relation to its trucks; substantially as described.

16. In a car, the combination with trucks carrying spring-supported columns, of antitt'riction side bearings on said columns and under the corners oi the car, swivel-pins forminga variable axis of movement for the trucks, and yielding means cooperating with said swivel-pins to center the same with respect to thetruck; substantially as described.

17. In a car, the combination with trucks having spring-supported columns, antifriction devices arranged on said columns and under the corners of the car, whereby the trucks may swing about an axis approximately under the center of the car, antifrictional devices permitting lateral movement of the columns, and resilient means for centering the car-body with respect to the trucks; substantially as described.

18. In a car, the combination of a transom having opposing springs, a car-body, and a swivel-pin depending from said car-body between said opposing springs, the normal po sition of said swivel-pin being determined by the establishment of equilibrium between the springs; substantially as described.

19. In a car, the combination of a trucktransom, of springs carried thereby, springfollowers, a spring-bar having abutments cooperating with said followers, and a car-body having a swivel-pin cooperating with said spring-bar; substantially as described.

20. In a car, the combination of a trucktransom, spring-housings mounted thereon, spring-followers in said housings, an opposing spring between said followers, a springbar having abutments cooperating with said followers, and a car-body having a swivel-pin engaging said spring-bar; substantially as described.

21. In a car, the combination of a trucktransom having a laterally-elongated opening, of a swivel-pin passing through said opening and opposing springs on the under side of the transom cooperating with said swivel-pin to normally retain the same in a central position with respect to the transom; substantially as described.

22. In a car, the combination with trucks having transoms, of spring-Snpported columns carried by the trucks and capable of lateral movement, antil'riction side bearings on the columns for supporting the corners of the car, means on the car-body for moving the columns laterally with the car-body, said means permitting the columns to swing with the truck, swivel-pins depending from the car-body and providing variable pivotal axes for the trucks, and yielding means cooperating with said swivel-pins for restoring the car-body to normal position after lateral movement; substantially as described.

In testimony whereof I hereunto affix my signature, in the presence of two witnesses, this 21st day of March, 1904:.

JOHN C. IVANDS.

Vitnesses:

F. It. CORNWALL, Gnonen BAKEWELL.

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