US1474598A

US1474598A - Railway-car-truck construction

Info

Publication number: US1474598A
Application number: US485431A
Authority: US
Inventors: John A Lamont
Original assignee: American Steel Foundries
Current assignee: American Steel Foundries
Priority date: 1921-07-18
Filing date: 1921-07-18
Publication date: 1923-11-20
Anticipated expiration: 1940-11-20

Description

' J. A. LAMONT RAILWAY CAR TRUCK CONSTRUCTION Filed July 18. 1921 Patented Nov. 20, 1923.

UNITED STATES JOHN A. LAMONT, OF CHICAGO, ILLINOIS, ASSIGNOR TO AMERICAN FOUNDItIES, OF CHICAGO, ILLINOIS, A CORPORATION OF NEW JERSEY.

RAlLWAY-CAR-TRUCK CONSTRUCTION.

Application filed July 18,

T 0 all whom it may concern:

Be it known that I, JOHN A. LAMONT a citizen of the United States, residin at Chicago, in the county of Cook'and fate of Illinois, have invented certain new and useful Improvements in Railway-Car- Truck Construction, of which the following is a specification.

This invention relates to railway car truck constructions and more particularly to the cooperative association between a, jour- 'nal box, side frame and some of the equalizing parts associated therewith.

One object of the invention is to provide a truck side frame, journal box and equalizing mechanism which cooperate with each other in a manner to improve the operative efliciency of the truck.

Another object of the invention is to provide a combination of parts in a slx-wheel car truck adapted to meet the various requirements of service conditions.

These and other objects are accomplished by means of the arrangement disclosed on the accompanying sheet of drawings, in which-- Figure 1 is a fragmentary side elevation,

' parts being in sectlon, of a s'x-wheel truck embodying my invention; and

I Figure 2 is sectional view taken in the v plane of line 2-2 of Figure 1.

The various novel features of the invention will be apparent from the following description and drawings and will be particularly inted out in the appended claims.

Re erring to the figures of thevdrawings it will be noted that I have disclosed my, invention in connection with a six-wheel equalizing truck including a side frameIO having a central journal box opening 11 for the reception of the journal receiving portion 12 of an intermediate journalbo-x 13. This journal box is provided with laterally extending brackets 14, the upper surfaces of which are located considerably below the center line of the journal 15 for a reason to be explained 'later. Mounted upon the brackets 14 are coiled springs 16 which are bridged by a cap 17 which carries in groove 18 at the middle thereof a pivot pin 19 upon which an equalizing beam 20 is pivotally mounted. The outer ends of th's equalizing beam 20 are directly engaged by inner end portions 21 of associated equalizing levers 22 which transmit loads from bolster mem- 1921. Serial No. 485,431.

reduces the amount of Wear which otherwise would occur between the journal box and its guides and on journal brasses. In this connection it will be noted that the journal 1'eceiving portion 12 of thejournal box 13 is embraced by a steel weaning band 23 which cooperates with the side frame walls 24 formed integrally with the side frame. These walls 2 1 also embrace or enclose a substantial part of the coiled spring 16; Not only "are the walls 24 formed integrall,

with the side frame, but also walls or shou der portions 25 are formed integrally with the side frames and these portions 24 and 25 act as guides for the relative vertical movement of the side frame and the spring cap 17, said spring cap having downwardly extending'pontons 26 and upwardly extending portions 27 .which cooperate vith said guide portions 24 and 25. There is relative movement between the spring cap 17 and the side frame when the truck is moved over uneven tracks or on a switch-back. Let it be assumed-that the middle pair of wheels is caused to drop lower than the two outer pair of wheels. In such case the intermediate j ournal boxes 13 lower and the springs 16,-spring cap 17, equalizing beam 20 and inner ends of the equalizing levers 22 follow, the side frame remaining stationary. Conversely, when the middle pair of wheels is caused to rise above the two outer pair of wheels the intermediate journal boxes 13 are caused torise and with them the springs 16, spring walls 28 of the spring cap 17 and that the spring cap in turn is mounted between the side walls 29 of the side frame at the section shown. Also the side walls 29 of the side frame are embraced by upwardly extending walls 30 formed integrally with the journal box 18 whereby all of the parts mentioned are maintained in proper. relative lateral position.

It is my intention to cover all-modifications of the invention falling Within the spirit and scope of the following claims.

I claim: a

1. In a six-wheel truck, the combination of a side frame having an opening formed by walls for the reception of a journal box, a journal box mounted in aid opening and guided in its relative movements with respect to said side frame by said walls, springs carried by spring cap bridging said springs and being guided in its relative movements with respect to said side frame by said same guide walls.

2. In a six wheel truck, the combination of a side frame having an opening formed by walls for the reception of a journal box, a journal box mounted in said opening and guided in its relative vertical movements with respect to said side frame by said walls, springs carried by said journal box, and a spring cap bridging said springs and being guided in its relative vertical movements with respect tosaid side frame by said same said journal box, and a of a side frame having a walled opening in Lavaees guide walls, there being other guide portions on said side frame for cooperating with portions of said spring cap for cooperating in guiding the latter in its relative movements with respect to said side frame.

3. In a railway car truck, the combination of a side frame having a walled opening in which a journal box ma guidedly move in a vertical direction, res lient means carried by said journal box, and equalizing means including a cap mounted over said resilient means guided in its vertical movements with respect to said side frame by the walls round sad opening.

4. In a railway car truck, the combination which a journal box may guidedly move in a vertical direction, resilient means carried by said journal box, equalizing means in cluding a cap mounted over said resilient means guided in its vertical movements with respect to said side frame by the walls around said opening, and other guide means formed integrally with said side frame for cooperating to guide said cap in its relative movements with respect to said side-frame.

Signed at Chicago, Illinois, this 6th day of July, 1921.

JOHN A. LAMoNr.