US65788A - Improved car-truck - Google Patents

Description

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C. 4F. ALLEN. Car Truck.

Patented June 18, 1867.

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Car Truck.

Patented June 18. 1867.

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UNITED S,I,AI:[|E SM C. F. ALLEN, OF AURORA, ILLINOIS.

IMPROVED CAR-TRUCK.

` Specification forming partlof Letters Patent No. 65,78-8, dated June 18, 1867'.v

To all whom it may concern'.-

Beit known that I, C. FALLEN of Aurora, in the county of Kane, State of Illinois, have invented an Improved Eight-Wheel Truck for RailroadCoaches; and I do hereby declare the A -following to be a full, clear, and exact descrip tion thereof, reference being had to the accompanying drawings, making a part of this specilication, in which-- Figure l, Sheet 1, is a plan view of my improved eight-wheel truck, complete.- Fig.2,

Sheet 1, is a side elevation of the frame which connects the two four-wheel trucks together,

and upon which one end ot` a coach is sup-` ported. Fig. 3, Sheet 2, is an elevation of one side of the eight-wheel truck. Fig. 4, Sheet 2, is a transverse section throughV the center of the truckframe, taken in the vertical plane indicated vby reddine a' min Fig.' 1. Fig. 5 is a view of one end of the truck-frame. Fig. 6 is a modication of the braced frame of one of the four-wheel trucks. g

Similar letters of reference indicate corresponding parts in the several figures.

This invention relates 'to certain novel improvements on the construction of trucks for railroad-coaches, the main object of which is to sustain the ends of the coaches-upon eight wheel trucks composed of two independent four-wheel trucks, connected together by a platform in such a manner as to relieve the coaches from shocks and concussions, `and thus afford ease and V.comfort to the passengers,` and also to greatly lessenthedanger in passing over the curves and inequalitiesfof the track, A

The nature of my invention consists mainly in connecting together two independent fourwhcel trucks by means of a platform or horizontal rame,which is sustained at its ends by pivotal connections upon vertically-elastic and laterally-swinging beams, applied centrally to the truck-frames, which platform or frame is provided with a central elastic swinging beam for sustaining uponit one end of a coach, so that each end of the coach will be supported by-threebearings, so disposed as to bring the weight of the load centrally between the axles of each truck, as will be herein after explained.

It further consists invprovidinglfor sustaining the platform and its swing-beam and the truckframes with their swing-beams upon the axl'ef.V

boxes of the trucks by means of springs and eq nali zing-beams, and in so constructing, trnssing, and tying together the frames', that great strength and lightness are secured, as will be hereinafter described.

Toenable others skilled in the art to understand my invention, I will describe 1its construction and operation.

In the accompanying drawings, A represents a horizontal platform, which is sustained at its ends upon two four-Wheel trucks, as will be hereinafter explained. As both of these t`our-wheel trucks areV alike inform and construction, a description of one will give a clear 'understanding of the construction of the other.

Ax A represent the wheels of the truck, and.A

A1 A1 the axles thereof. The axles enter boxes B B, which may be constructed in any suitable manner forsupportin g th ey superincmnbent load upon the ends of the axles, and which are applied between pedestals a a and held in place against lateral displacement, so as to rise and `fall freely. These pedestals are made of cast metal, and' are secured in place between the horizontal tie-bars b b1 and braces o c by means of bolts which pass through the pedestals and through the said bars, as shown in Fig. 3. The ends of the pedestals a a. are constructed with anges, which overhang the edges ot' the braces c c, and thus prevent lateral displacement of these pedestals. The horizontal tiebars b extend longitudinally from oneend of the truck-frame to the other, and the braces c o and thetie-bars h1 are carried beneath thepedestalsand lower braces c, and secured at their ends tothe extreme ends of the bars b` by means of vertical eye-bolts b2. These bars extend in horizontal planes' .parallel tothe upper bars b between the outer pedestals, andv are then turned upward, so as to form an'elongated stirrup or support, as shownin the drawings. Between .these horizontal bars b b1, and below the intermediate.horizontal portions of the braces c c,.the ends of horizontal transverse beams C G are firmly secured by means of vertical through-bolts, which pass down through the bars b bi, braces c o, and pillowblocks d d, and are tightened by means or' nuts l upon their lower ends. The beams C C yare in vthe middle of the length of the truck-frame,

and they are secured in place, as aforesaid, so

as to leave a space between them for 'receiving a swinging'beam, D, which will be hereinafter described.

In Fig. 3, the beams C C are shownas being arranged below the` intermediate horizontal portions of the braces c c, with 'thepillowblocks d be-tweenthese 'braces and the upper bar b, vbut in Fig. 6 the braces c o and pillowblock d are shown as being located beneath the beams C. C.' The braces c c extend from the ends of their respective pillow-blocks upward and downward, and pass over and beneath the pedestals a a, and are y. secured by bolts, "as shown in the drawings. Between the ends -of the two transverse beams C C metal boxes e-e Vare rmly bolted by transverse bolts.- These boxes are composed of horizontal and vertical Webs, and form metallic bearings o r abutments for the vmetal bars b1 and braces c, so that a more uuyielding and rigid-connection will be el'ected .than could be made if the metal bars were boltedto the Wooden beams C C. The inner ends of said boxes e e also form end abutments for the swinging beam D,.as shown in Fig'. l. The pillow-blocks el d extend across the beams (l C,.and form, in conjunction with their respective boxes e e, solid intermediate bearings or braces for preventing a central vertical dis# placement of the longitudinal bars and braces composing the sides of the'truck-frame.` They also prevent the collapsing or. spreading out of said bars and braces. The braces c c are designed to serve as braces for stifiening and strengtheningy those portions of the sides of the frame which extend vbeyond. (l C and pillow-blocks d d, vas shown in Fig. 3. Upon the upper ends of the four axle-boxes B rflanged steps el are put, which receive the ends of saddles e2 that are placed astride the bars'b c, so as to allow the truck-frame `to rise and descend freely while they remain 4stationary upon their respect-ive boxes. Upon the upper ends of these saddles compound semi-elliptic springsf are supported and properly fastened,`which springs are connected, at their inner ends, to the free ends of equalizing-beams D by means of loops f1, and at their outer ends to the'eyebolts b2, by means of loops f2, as shown in Fig. 3. The levers or beams D are held up against knife-edge bearings, which are in saddles g',- that are secured firmly tothe pillow-blocks d. The fulc'rums of the equalizing-b'eams D are in avertical plane passing vcentrally betweenthe transverse.beamsy C C, and consequently inthe center of the length` of the truck-frame. The bearing'of each spring f 'is ina vertical plane intersecting the axisfof itsrespective axle. Gonsequentlythesuperincumbentweight upon the vswing-beam D willbe uniformly re-4 c'eivedupon the four axle-boxes and upon both axles; and, -while this is the case, the four' springs f will form an intermediate support for the truck-frame upon itsaxles, and allowv` for a free vertical and elastic play.

It-willbe Seen, from the above description oi' the construction ot 'the four-wheel trucktrames, that I combine strength and lightness with durability and great rigidity. I have' metal abuttiijig against metal at every point,

and thus secure the points permanently against looseness.

' The swing-beam D is constructed of such length as to allow it a free endwise 'play between theboxes eA e, and 'itis supported upop a beam, E, by means of india-rubber or other suitable springs, so as tn allow itA to have a vertical elastic motion.. 'If desirable, the ends of this beam D may be caused to abutagains' springs, to avoid lany j ar or concussion whicl might be caused .by their striking against the metal boxes e c. The beam E is suspended from the transverse beams. C C by means, of elongated loops t c' and rocking-blocks jj, as described'in'my Letters Patent dated on the 24th day of April,I 1866, which allow the beam D to have a free and endwise movement, and also prevent the lateral shocks and concussions on'the truck-frame from being communicated to it. On top of this beam D, and in the middle of its length, is a plate, G, through which isa vertical hole for receiving a pivot-pin, lc.'

This .plate is constructed with a concavity in its face and a central elevation for receiving.

the `face ofa plate, G', of a corresponding shape, which is bolted to the transverse trussed brace of the platform A. This plate G forms the bearing'for one end ofthe platform A, and it is so constructed that the central elevation which is formed on it will prevent `the parts from binding fupon the pivot-pin or bolt la.

The platibrmA is of arectangular shape, and consists of tWo longitudinal compound beams, which are made of wood, and strengthened by bolting metal plates on their vertical sides, and also at certain points upon their upper surfacessas shown in Figs. l and 2.- These longitudinal bars or beams are connected together' at a suitable distance apart, and in planes parallel to each other, by means of transverse bars or plates at the ends of said beams, and also by means of two central trans- 'vcrse'beams, A4 A4. The end bars are strengthened by trusses, to the middle of the length of which, the convex bearing-plates G are secured 5 also, segment-shoes m m, which latter slide upon elevations upon the swing-beam D. These end bars are strengthened against longitudinal strain by means ofthe intermediate longitudinal 'stay-beams AZQAZ, which are inv troduced between the said end beams andthe central beams A4 A4, as shown in Fig. l. To prevent the platform from' yielding or breaking down in the center, I employ braces, J, on .both sides of this platform, which incline from the ends thereof to the central vertical bolts J1, which are secured to the horizontal webs of metallic boxes e4 e4, which are secured between, the vbeams A4 A4,'as shown` in Figs/2 and 3.- The ends of these braces or trusses J kare constructed with lipped shoes p p upon their ends, the lips of which receive the ends of the longitudinal beams. vThe centers of .these braces are perforated to receive through them the 'bolts J1, and the -plates Jiare'ap.- plied to the bottom sideaof the beams A4' A4,

elongated Vloops and rocking bearings, as de.

scribed, for the swinging truck-beams D. as shown in Fig. 3. This swingingbeam K is provided on its upper surface and in the middle of its length with a concave bearing-plate,

B, constructed like the bearing-plate G on the swinging beams D, which plate receives a corresponding plate, which is secured to the bottom of the car-body on coach. A pivot-bolt which passes through the bedof the coach .and through the plate R and itsbeam, connects one end of the coach to the platform.

The eight-wheel truck which I have described is designed for supporting one end only of acoach, the 'opposite end being supported by a truck similarly constructed.

It-will be'seenu that each one of the four- `wheel trucks are allowed to have motions independent of the other, and that the `car or coach body is not mounted directly upon these trucks, but upon the swing-beams of a platform which has its end bearings upon the ofthe four-wheel trucks accommodating them. selvesto the irregularities and curves of the road without straining the frame-work.

Having described myinvention, what I claim as new, and desire to secure by Letters Patent, 1s-

1. An eight-wheel truck, which is composed of two independent four wheel trucks, con` nected together by means of a platform, A',

which is supported upon-and connected'by pivots to laterally-swinging spring-beams, ab ranged substantially as described.

2. 'In an eight-wheel truck, the combination of the laterally-swinging and vertically-elastic beams D D and K, withthe side 'springs ff and equalizing beams Dl D', so arrangedthat the weight .of the load upon the center of the platform A will be uniformly disposed upon all the axles of the trucks, substantially as described.

3. The connecting platform A, constructed of wood and. metal, provided with a swinging beam, K, and strengthened bymeansof trusses or braces, J J, substantially as described.

4.. In combination with the bars bbl, braces c o, pedestals a a, steps e1 c1, and saddles e2 e2, the transverse beams C C, metal boxes e c, pillow-blocks d d, fulcrumstraps g', and the equalizing-beams D D, with their springs and connectingloops, all arranged =and operating substantially as and for the purposes described.

e F.ALLEN. Witnesses: Y

T. B. RICE, i

S. W. CAMPBELL;

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