US731057A

US731057A - Railway-car truck.

Info

Publication number: US731057A
Application number: US14953103A
Authority: US
Inventors: Herbert R Keithley
Original assignee: Individual
Current assignee: Individual
Priority date: 1903-03-25
Filing date: 1903-03-25
Publication date: 1903-06-16
Anticipated expiration: 1920-06-16

Description

2 SHEETSSHEET 1.

PATENTED JUNE 16, 1903.

H. R. KEITH-LEY.

RAILWAY GAR TRUCK.

APPLICATION FILED MAR. 26, 1903.

1 du l L PATENTED JUNE 16, 1903.

H. R. KEITHLBY. RAILWAY GAR TRUCK.

.uruouron FILED MAR. 2a, 1903.

2 SHEETS-SHEET 2.

H0 MODEL.

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- dle the car axle-boxes b, as usual, and are' UNITED STATES Patented. June 16, 1903.

HERBERT R. KEITHLEY, OF BUFFALO, NEW YORK.

RAILWAY-CAR TRUCK.

SPECIFICATION forming part of Letters Patent No. 731,057, dated June 16, 1903 I Application filed March 25,1902; Serial No- 149.531. (No model.)

nected side frames each composed principally of commercial rolled shapes.

The object of the invention is to produce a light, strong, and inexpensive pedestal truckframe of novel construction which is. built up of few parts arranged to the best advantage to secure great strength to resist lateral stresses due to side thrust in rounding curves and bending stresses in a vertical direction at the pedestals due to the weight of the load.

In the accompanying drawings, consisting 'of two sheets, Figure 1 is a side elevation of a railway-car truck having a frame embodying the invention. Fig. 2is a view thereof, one half in end elevation and the other half in central vertical section. Fig. 3 is a plan View thereof.

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

The truck-frame consists of two trussed side frames connected by a transverse transom, and each of the side frames comprises pedestals at or near its ends and upper and lower truss-chords, the ends of which are connected to each other and to the upper portions of the pedestals.

A A represent the pedestals, each of which is of inverted-U shape and is formed of a single flanged bar, preferably an angle-bar, arranged with one flange or portion a vertical in a vertical plane at the outer side of the pedestal, and a flange a,'projecting laterally inward from the inner edge of the vertical flange or portion. The pedestal-legs stradguided in the up and down movements of the truck-frame by the guides at opposite sides of the axle-boxes. The pedestals are yield ingly supported from the axle-boxes by the usual springs b, arranged on the axle-boxes beneath the horizontal upper portions of the pedestals.

O and D represent, respectively, the lower and upper or tension and compression chords of the side frame. The lower chord is formed of a Z-bar arranged with its web vertical, one flange c projecting outwardly from the upper edge of its web and the other flange c projecting inwardly from the lower edge of its web.- The lower chord is bent to provide a depressed central portion which extends down between the pedestals and horizontal end portions which are secured to the upper horizontal portions of the pedestals. The

horizontal end portions of the Web of the chord stand inside of and beside the vertical flanges or portions of the pedestals, which the end portions of the upper flange of the chord overhang, while the end portions of the lower flange of the chord rest upon the horizontal portions of the lateral flanges of the pedestals.

The upper chord D of the side frame consists of an angle-bar arranged with one flange vertical and the other flange, which is preferably of greater width than the vertical flange, projecting laterally inward from the lower edge of the vertical flange. The ends of the vertical flange of the upper chord stand beside the ends of the web of the lower chord, and the ends of the lateral flanges of the upper chord rest on the horizontal ends of the lower flange of the lower chord. The ends of the upper and lower chords are rigidly connected to the pedestals by horizontal and vertical rivets or bolts cl and d, passing, respectively, through the vertical portions and lateral flanges of the chords and pedestals. The compound section formed by riveting the end portions of the Z-bar lower chord and angle-bar upper chord together at the upper ends of the pedestals has a sufficient 'section modulus to resist bending stresses in a vertical direction at the pedestals due to the weight of the load and makes it possible'for the truck to carry a very heavy load. The lower ends of the inner legs of the pedestals are connected by a horizontal tie E, preferably formed of an angle-bar the vertical flange of which is riveted at its ends to the vertical flanges or portions of the pedestals and at its central portion to the central portion of the web of the lower chord. The connections of the ends of the tie with the pedestals are preferably supplemented by gusset-plates e, riveted to the tie and pedestal-legs.

The two side frames are rigidly connected by a transom, the ends of which project in bet-ween the upper and lower chords of the side frames, to which they are attached, so as to properly space and rigidly connect the upperand lower chords of each side frame. The transom may be of any suitable construction, butis preferably com posed of separated channel-beams F, arranged with their webs vertical and their flanges projecting outwardly or away from each other. The lower flanges of the transom-channels rest on and are riveted or bolted to the outwardly-projecting upper flanges of the lower chords of the side frames.

G represents gusset-plates which are arranged between the upper chords of the side frames and the tops of the transom-channels. The" gusset-plates are long, are located beneath and riveted to the lateral flanges of the upper chords, and their central portions, which are wider than their end portions and project inwardly beyond the lateral flanges of the upper chords, are rigidly attached to the upper flanges of the transom-channels by rivets or bolts g. Part of the rivets 9 also pass through the lateral flanges of the upper chords and securely connect the same to the transom -channels and gusset-plates. The wide lateral flanges of the upper chords and the gusset-plates resist lateral stresses due to side thrusts in rounding curves and very rigidly connect the side frames to the transom, so as to prevent any twisting or deflection of the side frames from their true parallel relation.

H represents short channel-pieces arranged between the ends of the transom-channels and riveted to the latter and to the upper flanges of the lower chords for the purpose of increasing the stiffeners of the central portions of the lower chords and the strength of the connections of the latter to the transomchannels.

I is a channel-piece arranged between and riveted to the central upper portions of the transom-channels to hold the latter from spreading and afford a central bearing for the vertical flanges or portions at the outer side faces thereof affords broad horizontal supports for the end portions of the truss-chords inside of the vertical portions of the pedestals and enables the employment of the described upper chords having the wide lateral flanges,with the vertical flanges at their outer edges, where they are most effective in resisting bending moments in a lateral direction due to side thrust on the side frame. This arrangement also places the vertical portions of the chords and pedestals at the outer sides of the latter, thus similarly increasing the strength of the ends of the side frame to resist lateral bend-ing moments.

I claim as my invention- 1. A trussed side frame for railway-car trucks comprising pedestals of inverted-U shape each consisting of a flanged bar having a vertical flange or portion arranged at its outer side and a lateral flange projecting inwardly from the inner edge of said vertical flange or portion, a lower chord having a vertical portion and a lateral flange, and an upper chord consisting of an angle-bar arranged with one flange vertical, the ends of the vertical portion of the lower chord and vertical flange of the upper'chord being secured to the vertical flanges or portions at the outer sides of the pedestals, substantially as set forth.

2. In a railway-car truck, the combination of two side trussed frames each comprising inverted-U-shaped pedestals having vertical portions at their outer sides, a lower chord having a vertical portion, and a lateral flange, and an upper chord consisting of an anglebar having a vertical flange and an inwardlyprojecting lateral flange, the ends of the ver-- tical portion of the lower chord and vertical flange of the upper chord being secured to gether and to the vertical portions at the outer sides of the pedestals, a transom connecting said side frames, the ends of the transom extending between the chords of the side frames, and gusset-plates arranged between and secured to the ends of the transom and the lateral flanges of the upper chords of the side frames, substantially as set forth.

3. A trussed side frame for railwaycar trucks comprising pedestals of inverted-U shape each consisting of a flanged bar having a vertical flange or portion arranged at its outer side and a lateral flange projecting inwardly from the inner edge of said vertical flange or portion, a lower chord consisting of a Z-bar arranged with its web vertical, and an upper chord consisting of an angle-bar arranged with one flange vertical, the ends of the vertical web of the lower chord and vertical flange of the upper chord being secured to the vertical flanges or portions at the outer sides of the pedestals, substantially as set forth.

4. In a railway-car truck, the combination of two trussed side frames each comprising inverted- U -shaped pedestals having vertical portions at their outer sides, a lower chord of Z shape in cross-section, and an upper chord having a vertical flange and a lateral flange,

the ends of the web of the lower chord and vertical flange of the upper chord being secured together and to the vertical portions at the outer sides of the pedestals, and a transom connecting said side frames, the lateral flanges of said upper chords being secured to said transoms, substantially as set forth.

5. In a railway-car truck, the combination of two trussed side frames each comprising inverted-U shaped pedestals having vertical portions at their outer sides, a lower chord consisting of a Z-bar arranged with its web vertical, and an upper chord consisting of an angle-bar having a vertical flange and an'ininverted-U-shaped pedestals having vertical portions at their outer sides, a lower chord consisting of a Z-bar arranged with its web vertical, and an upper chord consisting of an angle-bar having a vertical flange and an inwardly-projecting lateral flange, the ends of v the Web of the lower chord and vertical flange of the upper chord being secured together and to the vertical portions at the outer sides of the pedestals, a transom connecting said side frames, the ends of the transom extending between the chords of the side frames, and gusset-plates arranged between and secured to the ends of the transom and the lateral flanges of the upper chords of the side frames, substantially as set forth.

Witness my hand this 23d day of March,

HERBERT R. KEITHLEY.

Witnesses:

JNo. J. BONNER, OHAs. W. PARKER.