US1238465A - Car-truck. - Google Patents

Description

c. s. WALTON.

CAR TRUCK.

APPLICATION FILED JAN-6. 1917.

ETI-

l I I Patented Aug. 28, 1917.

C. S. WALTON.

CAR TRUCK. I APPLICATION FILED JAN-6.1917- Patented Aug. 28, 1917.

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onAnLns s. WALTON; or CHICAGO, ILLINOIS, ASSIGNOR '10 STANDARD can TRUCK COMPANY, or CHICAGO, ILL noIs, A conronarronor new anasny.

GAR-TRUCK.

resents.

Specification of Letters Patent.

Patented Aug. 28, 191% 1 Application filed January 6, 1917. Serial No. 141,009.

To all whom it may concern."

Be it known that I, CHARLES S. WALTON,

I a citizen of the United States, residing at Chicago, in the county of Cook 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. 7

My invention relates to improvements in car trucks, and particularly to six-wheeled equalized car trucks. To the above end, generally stated, the invention consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

In the accompanying drawings, which illustrate the invention, like characters indicate like parts throughout the several views.

Referringto the drawings, 1 Figure 1 is a side elevation of the improved car truck with some parts sectioned on the line 11 of Fig. 2;

Fig. 2 is a fragmentary plan view Fig. 3 is a view in transverse SGClZlOIlWltll the left hand portion of the view sectioned on the line 3-3 and the right hand portion thereof sectioned on the line of Fig. 1,

on an enlarged scale; and

Fig. 4: is a fragmentary detail view in end i elevation.

Each side frame of the improvedcar truck is indicated by the numeral 5 and, as

shown, is of cast steel with a general cross section in the form of a box, the walls of which are suitably reinforced. I Qpenings are formed in the side frames 5 to permit casting thereof and for the sake of light ness. Rigidly bolted to the under side of the side frames 5, are three pairs of longitudinally spaced pedestals 6, each pair of which has its. lower-end connected by a tie bar 7.1 45.

The wheels, axles and journal boxes are indicated, respectively, by the numerals 8, 9,

, and 10. The journalboxes 10 are guided by the pedestals 6, in the customary manner,

-with freedom for vertical movement with respect to the side frames. Over each journal box 10,.the side frames. 5 are cut away to afford additional clearance therefor.

Between the wheels 8, the side frames 5 are dropped at 11 and formedwith the opening 12, having in their top portions bolster and spring cap guides 13. The lower portions of the opening are expanded to permit spring caps 14, of lateral motion devices, to be applied in working position between the guides 13 or removed therefrom. The ends of channel spring planks 15 are inserted in the openings 12, rest on the lower members of the dropped portions 11 of the side frames 5 and are riveted thereto with their flanges turned upward. These spring planks 15 rigidly connect the side frames 5 and hold inserted through the openings 12, between the guides 13, and are provided with vertical stop flanges 18 arranged to engage the inner faces of the side frames .5 and limit the lateral movement of the bolster 17. Anti-friction lateral motion devices, of which the spring caps 1a form a part, rest on the springs l6 and support the bolster 17 therefrom. These lateral motion devices, in addition to. the spring caps 14, comprise contours 19 formed in the under sides of the bolster 17 to receive rollers 20,. which, in turn, aremounted in contours 21 formed in :the spring caps 14. These spring caps 14.

are notched in the customary manner to receive the guides 13. The two members of the double truck bolster 17 are rigidly connected by an H-shaped casting 22 which carries. a center plate 23.

The side frames 5, at their ends, are rigidly connected by cast tie bars 2 1 which, as

shown, are riveted to the under surfaces thereof. Cast integral with these tie bars 24: and with the side frames 5, are brake hangers 25. Supported on the outer ends of the truck bolster 17 and bolted thereto, are arch bars 26 which carry side bearings, not shown, of the usual or any desired construction.

The side frames 5 are supported from the journal boxes 10 by semi-elliptical springs 27 mounted on spring bases 28 which, in turn, rest directly on the tops of said jourjecting trunnions 37 mounted in segmental nal boxes. These spring bases 28 are held on the ournal boxes against longitudinal movement, with respect to the side frames 5, by ribs 29 cast with the tops of said journal boxes and which fit in grooves 30 formed in the bottoms of the spring bases. The outer ends of the outer springs 27 are con nected to the side frames 5 by links 31 having apertures in their upper ends, through which the respective ends of the springs 27 extend, and having on their lower ends oppositely projecting trunnions 32, which are mounted in segmental seats 33 formed with the walls of the side frames 5.

The inner ends of the outer springs 27 are connected to the endsof the intermediate springs 27 by equalizers comprising links 34, bell-crank levers 35 and compression bars or members 36. The bell-crank levers 35have horizontally and vertically disposed arms and are provided with oppositely proseats 38 formed with the walls of the side frames 5. The horizontal armsof the bellcrank levers 35 underlie the inner ends ofthe outer springs 27 and the ends of the intermediate springs 27 and are connected thereto by the links 34. The compression members'36 extend over theme-mbers of the bolster l7 and connect the vertical arms of sockets 41 to receive the rounded ends of the vertical arms of thebell-crank levers 35.

Obviously, the links 31 and 34:, bell-crank levers 35 and compression members 36,'flexibly connected as above described, are free for movements longitudlnally with respect to the side frames 5.

From the above description, it is evident that the journal boxes 10 are mounted for free and independent vertical movement, with respect to each other, and without a direct movement given to the truck frame itself. It is also evident that the load of the car is directly on the double bolster and it, in turn, is supported from the sideframes by the anti-friction lateral motion bearing devices and springs 16. The weight on the side frames 5 is distributed on the journal boxes 10 through the springs 27 and equalizers.

\ It is, of course, understood that the side frames may be of structural steel, instead 2 "of cast steel as shown;

ave-a 1. a car triikf'the emanation with the side frames, a bolster and journal boxes, of means supporting the side frames on the journal boxes, including leaf springs, bell crank levers havinglone of their arms connected to said springs, and compression 7 members over the bolster and connecting the other arms of said levers. l

2. In a six-wheeled car truck, the combination with side frames, a double bolster and journal boxes, of leaf springs seatedon the journal boxes, abutments between the outer ends ofthe outer springs and the side frames, pairs of bell'crank levers fulcrumed on the side' frames between the'journal boxes and ends of the bolster and having horizontally and vertically disposed arms, the former ofwhich are connected to the inner ends of the outer springs and the ends of the intermediate springs, and a compression member connecting the vertical arms of each pair of bell-crank levers.

3. In a six-wheeled car truck, the combination with side frames, a double bolster and journal boxes, of leaf springs seated on the journal boxes, abutments between the outer ends of the outer springs and the side frames, pairs of bell-crank levers fulcrumed on the side frames between the journal boxes and ends of the bolster and having horizonta'lly and vertically disposed arms, a compression member connecting the vertical arms of each pair of bell-crank levers, and

links connecting the horizontal arms of the bell-crank levers to the inner ends of the outer springs and to the ends of the intermediate springs. v i

4:. In a'six-wheeled car truck, the combination with side frames, a double bolster and journal boxes, of leaf springs seated on the journal boxes, links pivotally connecting the outer ends of the outer springs to the side frames, pairs of bell-crank levers ful crumed on the side frames between the journal boxes and ends of the bolster and having horizontally andvertically disposed'ar'ms, links connecting the horizontal arms of saidlevers to the inner ends of the outer springs and to the ends of the intermediatesprings, and a compression member connecting the vertical arms ofeachpair of bell-crank levers.

5. In a six-wheeled car truck, the combination with side frames [and journal boxes, of a double bolster having its end portions supported from the side frames at points between the journal boxes, leafsprings seat ed on the journal boxes, abutments between the outer ends of theouter springs and side frames, bell-crank levers fulcrumed on the side frames between the journal boxes and the end portions of the bolster andhaving horizontally and vertically disposed arms, said horizontal arms beingconnected' to the inner ends of the outer-springs to the levers on opposite sides of the end portions of the bolster in pairs.

6. In a six-wheeled car truck, the combination with side frames and journal boxes, of a double bolster having its end portions supported from the side frames at points between the journal boxes, leaf springs seated on the journal boxes, abutments between the outer ends of the outer springs and side frames, bell-crank levers fulcrumed on the side frames between the journal boxes and the end portions of the bolster and having horizontally and vertically disposed arms, said horizontal arms extending under the inner ends of the outer springs and the ends of the intermediate springs, links connecting said horizontal arms withv the overlying ends of said springs, and compression members extending over the bolsters and con necting the vertical arms to the bell-crank levers located on opposite sides thereof in pairs.

7 In a six-wheeled car truck, the combination with side frames and journal boxes, said side frames having integrally formed dropped portions between the journal boxes within which are formed bolster openings, of a double bolster having its ends mounted in said bolster openings and spring-supported from the side frames, and springs and equalizers supporting the side frames from the journal boxes.

8. In a six-wheeled car truck, the combination with side frames and journal boxes,

said side frames having integrally formed dropped portions between the journal boxes within which are formed bolster openings, of a double bolster having its ends mounted in said bolster openings, springs supporting the bolster from the side frames, anti-fric- CHARLES S. WALTON. Witnesses F. L. BARBER, E. W. WEBB,

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of Patents.

Washington, D. 0.

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