US93146A - Improved railway-car truck - Google Patents

Description

I 2 Sheet s- She'et A WELGH RAILWAY GARY TRUCK.

No, 93,146. Patented July 27,, 1869 F I l l l I I I l I I I I IL 222772 away, Y

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."Lcltei'slatent No. 93,146, dated m 27,1869.

IMPROVED AILWAY-alienation.

The Schedulereiened to in these Letters Patent: and making part of the same.

annexed drawing, and to the letters of reference marked;

thereon, which make a part of this specification, in which-- 3 Figure l is a side view of a six-whcclml truck on iny-iinprovcd plan; v

Figure 2. is a top view of the same; Figure 3 is a cross-section of the same, through the central axle;

Figure 4, a 'side' viewof my improvement as applied to a tour-wheeled truck;

' Figures 5 and 6 are diagrams of ditiercnt kinds of hangers; 'and i t Figure 7,'a diagran1 of one kindef bolster.

The details of the car unconnected with my improvement are not represented, because my improvement is more plainly shown without such details.

' My invention consists in extending the swinging frame beyond the outside of the truck-frame, for the purpose of; supporting thereon springs of any kind,

placed outside of the truck-frame, as well as inside, to carry the weight-of the car-body; in using for that purpose, and so placed, elliptic springs, extending p ar-. allcl with the axis of the car; and in supporting the car-body on said springs by means of a bolster, extending beyo nd the outside of the truck frarne, setting at right angles on all of said springs, and carrying both the centre andside vibration-plates; and also in another arrangement, supporting the car-body on said springs,

so supported and placed, by means of a shorter bolster, carrying the centre and side vibration-plates, and rest-1 ing,'at each end, on cross-bars laid across each pair of springs.

The main objects of niy invention are-- First, by the said extension of the swinging frame, and by placing springs .on'tiie ends thereof, under the, outer part of the car, to get such breadth of bearing for the body as tov prevent excessive rolling, and the lnrching soconunon' and, so unpleasant and injurious in the top-heavy cars new deemed necessary for comfort, and coming more and more into use and, by such greater breadth of-bearing, to be able to use much more delicate springs, withoutrolling or unsteadiness, and, if thought best, to increase the width of the body andrthus to gain the great advasitages'ot" the broadgauge on a narrow-gauge railroad.

Second, by bringing all the springs that support the car-body on a six-wheeled truck into one line parallel with and over the centre axle, to avoid the greater number-and greater extent of thestihyati'ons caused in such trucks'by the. ordinary disposition of the springs in twolines between the axles, ata distance from the centre of motion of the truck-ii'tfine, and thus to avoid one of the principal disadvantages of the six-wheeled truck.

Third, by the arrangement proposed, to use elliptic steel springs on the swinging frame in six-wheeled trucks, instead of spiral, gum, or some inferior springs, without spreading the wheels, and so increasing the weight and the difficulty of passing around sharp curves, and even then being limited in length of spring, which I avoid, thus avoiding the other principal objcctionto sixnvheeled trucks, so that their great and obvious advantages may be gained--withoutvtheirdisedvantages In the accompanying drawingsa represents the centre, and a e, the other axles of a six-wheeledtruclg. i

b b the'sills, and G O", cros's-piedes of the-truckd d are axles of a fonr-wheeledtmc-k.

E E, the sills of the. car-body, and

F F F F, the centre-frame, -on which the carbody rests; and

F, the centre bearing-timber, under the bolster: G, the centre vibration-plate. v 1 It It It, the side vibration-plates, at which 1 put small gum sp ings, to prevent shocks.

The t 'uck-frarne maybe supported by elliptic springs, resting on the jonrnal boxes, by gum, spiral, or other springs, on equalizing-bars, or in any other way.v

The swinging frame is composed. of the swinging bars k k, or the single swinging bar L, and the springbearers m 'm m m or in afou'r-wheeled truck,.n.

The swinging bars, of wood, iron, or steel, suspended by'the hangers 0 '0 o 0, or o and '0 or 0 extend oht between the wheels,'beyond the outside of the truck frame. The middle of these may be very light, and they may, it thought best, bejointed at j 9' to allow equalization of pressure on the two springs of each. .pair, when the car is unequally loaded.

0n, and *at light angles to the swinging bars, are set and secured the spring-bearers m, m", m), m, or a,

of iron or steel--one of each pair inside the other, out- I side the truck-framegencrally, but not necessaril equidistant from the hanger. .The outer one Sh0l1l( be as far out as possible, under the-outside of the body, so thatthe spring placed upon it may have as much leverage as possiblc,'t0 keep the body from rolling too much. 1

In four-wheeled trucks, these hearers, as shown at It, are short rigid bars. In six-wheeled trucks, they may either be elastic half springs, or rigid bars, arched,

if necessary, spanning over the line of the central axle,

or outside of the truck-sill; or they may rest on the top of the sill, as a", and form a loose collar around it. They may be either in one link, or be jointed near the middle of their length, as shown at) j, I prefer to make them as long as possible, with joints, and stops atthe joints, to limit the vibration of the upper link, so that there-shallordinarily be all the easy swing of the long hangers, and yet, by-the shortnessof the radius of the are described by the lower end of the lower link,'when the motion of the upper link is stopped, and the consequent rapid rise of the weight by further vibration, that, any excessive lateral movement of the ear-body shall be stopped quickly, but without shock.

The elliptic springs P, P, P, 1; or P", placed longit-udinally, are set on and clamped to the spring-bearers, the middle of each spring being, in all cases, at

the middle of the length of the truck. The springs, bythis anangement, can be increased to any length that may be desirable.

The centre-and side vibration-plates, which carry the body, are set on the extended bolster q, of wood, iron, or steel, which rests, at right angles, upon, and is clamped to all the four springs. In another arrangement, shown in fig. 7, the vibration-plates are seton a shorter bolster, 1', each end of which rests on Unclamped to the two springs on that side of the car.

I do not claim the extended swinging frame, the longitudinal elliptic springs,no'r the bolsters, when used for any other purpose, or combined in any other way, substantially different from that herein set forth, nor

the car-body outside of the truck-frame.

\Vhat I do claim as my invention, and desire to secure by Letters-Patent, is--'.

for the purposes specified.

' ASHBEL WELQH.

Witnesses:

WM. Oowm,

.Tomr SILVERfi.

middle of a cross-bans, which is supported by, and

any other substantially difi'erent mode of supporting 1. The extension of the swinging frame beyond the y

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