US361846A - And luther k - Google Patents

Description

(No Model.)

F. G. SUSEMIHL 8v L. K. JEWETT.

GAR TRUCK.

Patented Apr. 26, 1887,."

722076. sumas @/.Sueemiu I 2 72" .Zwe/

UNITED STATES PATENT OFFICE.

FRANCIS G. SUSEMIHL, OF DETROIT, MICHIGAN, AND LUTHER K. JEVVETT,

OF BOSTON, MASSACHUSETTS. l

CAR-TRUCK.

SPECIFICATION forming part of Letters Patent No. 361,846, dated April 26. 1887.

Application filed August 4, 1886.

To all whom it may concern,.-

Beit known that we, FRANCIS G. SUsEMIHL, of Detroit, county ofVayne, and State of Michigan, and LUTHER K. JEwErr, of Boston, county of Suffolk, and State of Massachusetts, have invented an Improvement in Car-Trucks, of which the following description, in connection with the accompanying drawings, is a specication, like letters on the drawingsreprcsenting like parts.

Our invention,herein to be described,has for its object to improve that class of car-trucks called swingmotion trucks, or a truck wherein the bolster which supports the weight of the car -body is supported upon springs, in turn supported in such manner by links as to permit the bolster to move longitudinally,

or to swing with its load at right angles to the truck and track.

Heretofore the bolster of swinging trucks has contained large wooden beams, and the springs on which the bolster rests have been sustained upon a swing-plank extended across the truck, and this swing-plank has been supported by links sustaining a bar supported by metallic transoms, made preferably as two channel-bars, having between them an open space for the' reception of the bolster, as well represented in the journal called National Car Builder,77 page 93 of the edition for July, 1885, the j ournal being published at New York, N. Y. I am also aware that in some swingtrucks the linkswhich support the swing-plank and springs have been located at a considerable distance inside the archbars toward the center of the truck, or just over the track or rails, and in case the links referred to are broken the swing-plank drops directly upon the track, and the bolster is left entirely without support, suchbreaking of the links usually resulting in derailing the car-truck. To obviate this great objection to the employment of so-called swing-motion7 trucks, we have provided the car-truck with a metallic U-shaped transom,to take the place of the said channel-bars, and haverigidly attached the said transom to arch-barsupporting blocks, and

'V have suspended the links to support thel springs, the bolster,and car-body directly from Serial No. 200,962. (No model.)

rocking bars sustained above and parallel to the said arch-bars, the links supporting the springs and transom embracing the arch-bars,

rather than a bar sustained by the transoms,

the said springs and links-falling in the line occupied by the arch-bars and truss and outside the track, and in case the links for any reason are broken the devices supporting the springs and bolster are caught in the transom and the cartruck will run as before, only thev and their contained boxes are and may be of 7o any usual construction.

The transom b, as well as the bolster b', is herein shown as composed of strong sheetmetal shells, preferably steel, of. about one fourth of an inch thick, the same being bent into substantially U shape, to form a box or .trough with rounded corners, as at b3, the said transom and bolster being each in one piece, instead of in separate pieces riveted together, as in United States Patent No. 279,951, the bolster being narrower than the transom, so as to be free to rise and fall therein. The bolster issustained by springs b3, (herein shown as four,) the said springs being so located at the ends of the transom and bolsteras to be effective'in reducing concussion in the line of the arch bars or trusses to be described. The transom and bolster are both strengthened internally by angle-iron, as b4.

The bolster is enough narrower than the transom to afford sufficient space between them to receive the bolstersupporting metallic links b5, made, preferably, of toughest and strongest wrought-iron, the said links preferably being bent, as shown in the drawings, to form double loops, so that they may not only embrace the rocker-bar t,`but also extend under the supporting-bar t', upon which are mounted to rock the spring-seats t2, the supporting-barst having preferably at their longitudinal centers a rib, which enters a concavity in the seats t2, the seats rocking upon the said bars to a limited extent under the requirements of the springs b3 and axle.

The rocker-bars t are herein shown as provided at their under sides in the direction of their length with a rounded projection toenter a recess in the top of the saddle c, thus forming a sort of scale-beam bearing, so that the rocker-bar t is free to rock upon the saddle, the rib on one entering a projection on the other and preventing lateralv displacement of the rocker-bar, the shoulders t5 of the saddle preventing longitudinal displacemept, or undue longitudinal movement of the rocker-bars upon the saddles.V The spring-seats t2 at opposite sides of the truck are connected, as herein shown, by means of a rod, tl, so that the fsaid spring-seats always maintain the same relative distance apart and swing in unison with the bolster b as the latter moves longitudinally, as it is permitted to do by reason of the links t5, resting upon the rocker-bars t, and sustain the supporting-bars t', upon which the spring-seats are mounted.

In another application filed concurrently herewith, Serial No.,209,962, welhave shown spring-seats supported upon like links b5,- but the said spring-seats were provided with projections to co-operate with a plate or block attached to the transom, so that the said springseats and bolster were not free to rock, or the bolster to movelongitudinally crosswise of the car, the links swinging upon the saddle about the arch-bars.

The saddle c is grooved at its lower side to rest upon or embrace the arch-bar c', the latter being extended longitudinally with relation to the truck and lying at right angles to the bolster b.

The vcli ps d3, at their under sides, have suitable shoulders to embrace the housings, the said clips, at their upper sides, having shoulders, as

at 6, against which abut the ends of the archbars c', a lug or upright, 7, of each clip, preferably rounded, being embraced by and serving to hold the truss e, the latter being kept down in engagement with the said lugs by means of a cap, e', held in position by a bolt, e?, which is extended down through the clip and the outer side of the housing, and also through the usual wheel-strap, e3, where the said bolt has applied to it suitable nuts. The

upper arch-bar, c', is further attached to thehousing by other bolts, as e4.

The trusses are composed of round or square metal rods of great strength/properly welded or united together to form, preferably, an endless band, the looped ends of which embrace the said lugs or projections 7, the truss extending from the said lugs along the clips d3, thence diagonally down over the rounded inner ends of the said clips, as shown in Fig. 2, andV under the transom I), affording strong support for the latter. v

At each side. of the transom b, and in the space formed between it and the truss e and the under side of an arch-bar, c,we have placed certain arch-bar-sustaining blocks or castings, j', (herein shown as substantially triangular in shape,) the said blocks preventing inward bending', buckling, or crushing'of the archbars, the upper and lower edges of the said blocks being preferably grooved to receive the arch-bar and the truss e, such construction preventing lateral bending or straining of either the arch-bars or truss. These blocks f have extending inwardly from them right-angled flanges f 2, which are bolted in place between the arch-bar and truss e and to the sides of the transom b by suitable bolts or rivets,25,

extended through holes 26.

Bolting or riveting the anges of the blocks to the sides of the transom and connecting the blocks to the arch-bar and truss by means of bolts g, as shown in Fig. 2, extended also through the saddle c and the wheel-straps, form a very rigid truck-one that will'keep square under all ordinary uses.

rlhe bolster b', as herein shown, has at its` upper side usual curve-irons, it', and a hub, m, to receive the usual casting at the underside of the usual rocker-bar. (Not shown.)

Ve may use any usual or suitable brake mechanism in connection with our improved truck, d

It will be noticed that the link b5 is what is called a double link, or, in other words, it is so made as to straddle the rocking bartand extend transversely under and so as to sustain the supporting-bar t and the weight carried on it, including the spring-seat and the bolster; but the employment of two open links to straddle the rocking bar and embrace the ends of the supporting-bar t would, we consider, come within the'scope of our invention.

From the foregoing description and the drawings to which it refers it will be seen that the weight of the car-body sustained by the supporting-bolster is not applied directly to the transom through the springs b3, but is applied through the springs upon the springseats, the supporting-bars, the links b5, and the rocking bar and saddle, the entire weight of the car being supported, it will be noticed, directly in the-line of the arch-bar and truss, which, in what is called a swing-truck, or in a truck wherein the bolster is free to move longitudinally as well as to rise and fall,.is a matter of very great importance, for by locating the spring-seats and springs directly in line with the arch-bar and truss all torsional strains which tend to twist the arch-bar or truss out of shape are obviated or neutralized, as are also strains which tend to shear off the bolts g and e3 next the arch-bar.4

The metallic transom extended across the truckfrom one to the other side, when employed in aso-called swing-truck, forms an t lwoo IIO

IZO

additional element of safety, which thus be-` comes a matter of great importance, for with the links b5, should they for any cause be broken the transom will catch and support the supporting-bar t' and the springrest and springs, thus preventing any serious accident, for in an emergency the car could be run a trip even though the links b were broken, but

it would not, of course, have the same amount of spring and would not ride as easily.

Making the bolster b of metal,vas shown and described, and extending it from side to side of the truck, instead of usual wooden bolsame position that they do in what is called the rigid truck, and the weight of the carbody is suspended directly under the archbar, the springs occupying such position better resisting the tilting of the car-body than in any other position.

The employment of a truss, e, made as an endless loop to embrace the lug 7 of the clip,

held in place upon the'housing by projections,

embracing the said housing, is a material element of safety, for in case of breaking the bolts g, which is not unfrequent, strain is not eX- erted on the housing-bolts so as to shear them I off, and the strain on the truss is exerted upon the lug 7, and this strain is counteracted by the end of the arch-bar abutting against the shoulder 6 of the lug 7, and at the same time it will be noticed that the archbar-supporting blocks prevent any breaking of the arch-bars.

We claim- 1. In a cartruck, a U-shaped transom, arch-bars, saddle, and rocking bar mounted thereon, combined with links, supporting-bars mounted thereon, and springs, and a metal bolster supported vby the said springs, the bolster entering the said transom, substantially as described. f

2. In a cartruck, a metallic transom, the arch-bar, the truss e, housings, clips mounted thereon, and arch-bar-sustaining blocks invserted between the said arch-bar and the truss i and transom, and the rocking bart, combined 5 o with the metallic bolster, springs to support it, supporting-bar t', and loops embracing the said rocking bar, the supporting-bar t sustaining above it the springs, the latter being located directly below the arch-bar and bel tween it and the truss, substantially as described.

3. In a car-truck, a metallic transom, ,the arch-bar, the truss e, housings, clips mounted thereon, 'and -arch-bar-sustaining blocks in- 6o serted between the said arch-bar and the truss and transom, and the rocking bart, combined with the metallic bolster, springs to support it, supporting-bar t', and loops embracing the said rocking bar, the supporting-bar t sustaining above it the springs, the latter being located directly below the arch-bar an'd between it and the truss, and the rod t7, whereby the supporting-bars and links at opposite sides of the truck are made to swing in unison, sub- 7o stantially as described.

In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses. f

FRANCIS G. SUSEMIHL. LUTHER K. JEVETT.

Vitnesses for F. G. Susemihl:

' CHARLES J. HUNT,

OsoAR LEHNDORFF.

Vitnesses for L. K. Jewett:

F. CUTTER, G. M. GONE.

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