US728582A

US728582A - Railway-car truck.

Info

Publication number: US728582A
Application number: US13548502A
Authority: US
Inventors: Herbert R Keithley
Original assignee: Individual
Current assignee: Individual
Priority date: 1902-12-17
Filing date: 1902-12-17
Publication date: 1903-05-19
Anticipated expiration: 1920-05-19

Description

PATBNTED MAY 19, 1903.

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APPLICATION FILED DEO. 17| 1902.

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Mor/EQ?? PATENTBD MAY 19, 1903. H. R. KBITHLBY. RAILWAY GAR TRUCK.

APPLICATION FILED DEO. 17, 1902'.

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m? mw kiffer/fyi UNITED STATES Patented May 19, 1903.

HERBERT R. KEITHLEY, OF BUFFALO, NEW YORK.

RAILWAY-CAR TRUCK.

' SPECIFICATION forming part of Letters Patent No. 728,582, dated May 19, 1903.

Application filed December 17, 1902. Serial No. 135,485. (No model.)

To @ZZ whom, it may concern:

Be it known that I, HERBERT R. KEITHLEY, a citizen of the United States,residing at Buffalo, in the county of Erie and State of New York, haveinvented new and useful Improvements in Railway-Oar Trucks, of which the following is a specification.

This invention relates more particularly to a railway-car truck of the diamond type; and the object of the invention is to provide a truck-frame built up of commercial rolled shapes which is composed of few parts arranged in a novel manner whereby the maximum strength and rigidity are secured for the weight of metal employed.

In the accompanying drawings, consisting of two sheets, Figure l is a side elevation of a railway-car truck embodying the invention. Fig. 2 is a view thereof one-half in end elevation and one-half in central vertical section. Fig. 3 is a plan view of the truckframe. Fig. 4: is a vertical section showing the spring-stirrup. v

Like letters of reference refer to like parts in the several figures.

The truck-frame is composed of two trussed side frames, which are attached at their opposite ends to the axle-boxes and are rigidly connected together between their ends by a transverse transom. Each side frame is composed of an upper or compression chord A, a lower or tension chord B, and a bottom tierod C. The lower chord B is formed of an angle-bar arranged with one flange vertical and the other iiange projecting laterally from the lower edge of the vertical flange. The end portions of the lower chord are horizontal and rest upon the tops of the axle-boxes, and the central portion thereof is depressed or bent downwardly between the axle-boxes, as usual. The upper chord is formed of an angle-bar arranged with one flange vertical and the other flange projecting laterally from the lower edge of the vertical flange. The end portions of the vertical flanges of the upper and lower chords stand side by side and are rigidly secured together by horizontal rivets o. The end portions of the lateral iianges are superposed, and they are connected together and the upper and lower chords connected to the axle-boxes by the usual anchoring bolts D, which extend away from each other.

.of the transom members.

through the lateral anges of the chords and through the usual bolt-holes provided on the sides of the axle-boxes. The horizontal rivets c, connecting the Vertical flanges at the ends of the chords, assist the anchoring-bolts in resisting the opposing tension and compression stresses in the upper and lower chords. The tie-bar C is connected at its opposite ends to the axle-boxes by the anchoring-bolts and is riveted intermediate of its ends to the central portion of the lateral iiange of the lower chord.

The construction of the side frame thus far described is disclosed in'United States Letters Patent No. 705,763, granted to me July 29, 1902.

The transverse transom which connects the two side frames together in the construction shown is formed by separated channel-beams F, arranged with their webs vertical and their anges projecting horizontally outward or The ends of the transom-channels project out between the chords of the side frames, constituting the struts for said chords, and rest upon short horizontal Z-bars G, which are arranged longitudinally on the lower chords of the side frames, with their lower iianges resting on and riveted to the lateral flanges of the chords and their upper iianges projecting inward over the vertical flanges of the lower chords. The transom-channels are attached to the Z-bars G by rivets passing through the lower flanges of the channels and upper iianges of the Z- bars. These Z-bars afford broad ilat bearing-surfaces for the transom-channels and materially stii'en the horizontal portions of the lower chords of the side frames.

H represents a gusset-plate, of which there are two, one arranged at each side of the truck between the upper chord and the tops The body or main portion of each gusset-plate is arranged in a substantially horizontal plane and is riveted to the top flanges of the transom members and to the lateral flange of the upper chord of the adjacent side frame, beneath which ange the gusset-plate extends. In the construction shown the gusset-plates are provided with depending vertical flanges h at their outer edges, which extend parallel with IOO the side frames substantially in the vertical planes of the outer faces of the side frames.- The gusset-plates are preferably made from ordinary rolled channel-beams having one flange removed. In heavy trucks the inner flanges of the channel-beams forming the gusset-plates can be retained and when so retained constitute end stops for the truckbolster. The described arrangement and construction of the gusset-plates affords la very strong and rigid connection between the trangusset-plates being riveted to the upper chords of the side frames form with said chords compound sections which have great capacity in resisting lateral. stresses or bending moments in a horizontal direction, due to the side thrust of the car-body in rounding curves.

I represents sljlpporting-stirrups for the bolster-springs. They are of substantially U shape and are hung between the transomchannels inside of and adjacent to the side frames. Each stirrup is preferably made from a channel-beam bent intoU shape with its lianges projecting inwardly. The major part of the flange at the inner end of the stirrup is sheared off, so that only a narrow dange t' is left, which at the vertical side portions of the stirrup serves as guide-bearings for the truck-bolster and holds the latter centrally in the stirrup to` prevent the bolster-rivets from striking the rivets connecting the stirrup to the transom. Portions 7l' of the flange at the outer edge of the stirrup are retained. These fiange portions project toward each other from upper ends of the vertical sides of the stirru'p and serve as stops to limit the end- Wise movement of the bolster in the truck.

t2 represents a filler plate or block arranged on the horizontal bottom portion of the stirrup between the inwardly-projecting edge flanges t' z".

The bolster J is supported as usual on springs j, arranged in the stirrups beneath the end portions of the bolster. Any form of bolster maybe employed. That shown in the drawings forms the subject-matter of a separate application and is not specifically described herein.

I claim as my invention- 1. In a railway-car truck, the combination of trussed side frames each comprising upper and lower chords formed by flanged bars having their ends rigidly attached to the car-axle boxes, transom members having upper and lower horizontal flanges and having their ends extending between the upper and lower chords of the side frames, hanged bars sup- *massa ported by the lower chords of the side frames and which constitute supports for said transom members, and gusset-plates arranged between and rigidly attached to the upper flanges of the transom members and the upper chords of the side frames, substantially as set forth.

2. In a diamond truck, the combination of trussed side frames each comprising upper and lower chords formed by angle-bars arranged with one ange extending laterally outward, transverse connecting-channels the ends of which extend between the chords of the side frames, a Z-bar supported by the lower chord of each side frame with its lower liange resting on the lateral flange of the gusset-plates having inwardly-extending cen-.

tral portions riveted to the upper flanges of the transverse channels, and longitudinal parts riveted to the lateral flanges of the upper chords of the side frames, substantially as set forth.

3. In a diamond77 truck, the combination of trussed side frames each comprising upper and lower chords formed by angle-bars, transverse flanged connecting members the ends of which extend between the chords of the side frames, fianged bars supported by the lower chords of the side frames and which constitute supports for said transverse connecting members, lgusset-plates arranged between and rigidly attached to said transverse connecting members and said upper chords of the side frames, and U-shaped spring-stirrups arranged between and attached to said transverse connecting members, substantially as set forth.

4. The combination of trussed side frames each comprising upper and lower chords formed of bars having horizontal anges, a transom connecting said side frames, and gusset-plates having substantially horizontal webs secured to said transom and to said horizontal flanges of the upper chords of said side frames and having substantially Vertical flanges extending parallel with said side frames, substantially as set forth.

5. In a railway-car truck, the combination ofA trussed side frames, a transom connecting said side frames and having its top substantially in the horizontal plane of the lower edges of the central portions of upper chords of the side frames, and flanged gusset-plates secured to said transom and to said trussed side frames, substantially as set forth.

6. In a railway-car truck, the combination of trussed side frames, a transom connecting said side frames, and gusset-plates secured to said transom and to said side frames and havingsubstantially verticalanges disposed substantially in the vertical planes of the IOS IIO

IIS

outer faces of the side frames, substantially as set forth.

7. In a railway-car truck, the combination of trussed side frames, a transom connecting said side frames, and gusset-plates secured to said transom and to said side frames and having downturned flanges extending substantially parallel with said side frames, substantially as set forth.

8. In a railway-car truck, the combination of trussed side frames, a transom connecting said side frames, and gusset-plates secured to said transom and to said side frames and having downturned flanges disposed substantiall)7 in the vertical planes of the outer faces of said side frames, substantiallyr as set forth.

9. A spring-stirrup for railway-car trucks having vertical sides connected by a substantially horizontal portion, said horizontal portion having upwardly-projecting edge flanges and said sides having inwardly-projecting edge iianges, substantially as set forth.

10. vIn a diamond truck, the combination of side frames, separated transverse connecting members, and substantially U-shaped spring-stirrups arranged between said transverse members and rigidly attached thereto, each of said stirrups having inwardly-projecting edge flanges on its bottom and sides, and a ller arranged on the bottom between said edge anges, substantially as set forth.

11. A spring-stirrup for railway-car trucks having vertical sides connected by a substantially horizontal portion, said vertical sides having inwardly-projecting iianges at their outer edges which serve as stops for the truckbolster, substantially as set forth.

Witness my hand this 12th day of December, 1902.

' HERBERT R. KEITHLEY.