US706680A - Car body-bolster. - Google Patents

Description

No. 706,680. Patented Allg. l2, 1902.

J. V. MGADAM.

CAR BODY BULSTER.

(Application led June 9, 1902.) (N6 Model.)

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UNITED STATES PATENT OEEICE.

JOI-IN V. MCADAM, OF ST.,LOUIS, MISSOURL-ASSIGNOR TO AMERICAN STEEL- BODY DOUBLE-BOLSTER OO., OF ST. MISSOURI, A CORPORATION or NEW JERSEY.

`CARv BODY-BOLSTER.

SPECIFICATION forming part of Letters Patent No. 706,680, dated August 12, 1902.

Application led June 9, 1902. Serial No. 110,894. (No model.)

.To a/Z whom, t may concern:

Be itknown that I, J OHN V.'MGADAM, a citizen of the United States, residing at St. Louis,

in the State of Missouri, have invented anew.4 and useful Improvement in CarBody-Bolsters,`

of which the following is a specification.

My invention relates to a double body-bolster for railroad-cars.

An ordinary double body-bolster usually comprises two single body-bolstershavin g top and bottom plates or arch-bars', respectively, with their thimbles and connecting-bolts, a

j longitudinal truss connecting the two body-` these separate parts in asinglepiece, preferably of cast-steel, having its component members so arrangedand the metalgdistributed therethrough as to produce a compact, rigid, and durable double body-bolster specially adapted to withstand the varying strains to which it is'subjected and at the same time insure the maximum of strength with a minimum Weight of material.

Theinvention consists infeatures of novelty, as hereinafter described and* claimed,

reference being had to the accompanying drawings, forming part of this specification, Whereon- Figure l is a' top plan of my improved double body-bolster for railroad-oars; Fig. 2, a side elevation thereof, showingthe sills of the car in transverse section broken away; Fig. 3, a longitudinal vertical section through the bolster on line`3 3 inrFig. 1; Fig. 4, an end view of the bolster; Fig. 5, across-section through the same on line 5 5 in Fig. l, showing oneof the side bearings attached thereto; and Figs; (i, 7, and 8, detail cross-sections to enlarged scale, through the bolster on lines G 6, 7 7, and 8 8, respectively, in Fig. 1, like letters and numerals of reference denoting .like parts in all the figures.

ends of an intermediate cross-beam c (preferably au I-beam) and at their end portions, respectively, tothe corresponding endsy ofan intermediate cross-beam d, (preferablya T- beam,) the top fianges 3 and 4 of the middle beam c and end beamsd,.respectively, being iiush with the top fianges l of the side beams a, and the top flanges 4 of the end beams d adapted to bear longitudinally against the under sides of the outer car-sills l).

The top and bottomifianges 3 and 5,-respectively, ofthe middle beam c, where they unite with the top and bottom flanges 1 and 2 of the side beams a, are flared or spread out- Ward toward the ends of the side beams a,

or, in other words, the corners resulting from the junction of the flanges 3 and 5 with the flanges l and V2 are formed with gusset-fillings 3 and 5', respectively,fthe gusset-fillings 3 being flush-at the ,topwith the anges 3 and 1 and adapted to bear against the vunder sides of the car-sills bthereat.

The inner top flanges 4 of the end beams CZ, at their junction with the top anges l of the side beams a, are also preferably formed with .gusset-filling 4 in a similar Tmanner'to the 4gusset-fillings 3, of the middlebeam c.

By this construction the body-bolster Als prevented from springing transversely under longitudinal strains of the car-body, which is also thereby strengthened and rendered more rigid under varying loads, `rounding.curves, and other sudden strains to Whichit is subjeoted.

In the vertical web 6 of the middle beam c is formed a tubular enlargement 7, through which and through the top flanges 3 is formed IOC) the central vertical hole 8 for receiving the king-bolt, (not shown,) and around the enlargement 7 and hole 8 at their lower end is formed the body center-bearing 9 for engaging the center-bearin g of the truck-bolster in the usual Well-known manner.

On the under sides of the outer top iianges 4 of the end beams d, respectively, are formed lugs 10, to which the ends ot' the truss-rods (not shown) are coupled.

All the parts above described-to Wit, the side beams d, the middle beam c, with its gusset-fillings 3 and 5', and the center bearing 7 and 9, and the end beams d, with their gusset-fillings 4', and lugs 10 for the truss-rodsare in one piece throughout and preferably of cast-steel, the dimensions, shape, and distribution of the metal through the entire structure being calculated for obtaining a cured to the car-sills b b.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. A car body-bolster, consisting of two opposite side beams, and a cross-beam intermediate to the side beams and united thereto, the said beams having lateral gussets at their junctions to each other, and adapted with the said gussets to bear against the car-sills, substantially as described.

2. A car body-bolster, consisting of two opposite side beams, and a cross-beam intermediate to the side beams and united thereto,

` the said beams having lateral gussets at their junctions to each other, all the said parts being integral and adapted to bear against the car-sills, substantially as described. l

3. A car body-bolster, consisting of two 0p- -posite side beams, and a cross-beam intermeto the side beams and united thereto at their middle portion, or thereabout, and a crossbeam intermediate to the side beams and united thereto at their end portions, respectively, the said beams having lateral gussets at their junctions to each other, and adapted with the said gussets to bear against the car sills, substantially as described.

5. A car body-bolster, consisting of two opposite side beams, a cross-beam intermediate to the side beams and united thereto at their middle portion, or thereabout, a cross-beam intermediate to the side beams and united thereto at their end portions, respectively, the said beams having lateral gussets at their junctions to each other, and the said crossbeams having respectively the body centerbearings and lugs for the truss-rods, allthe said parts being integral, substantially as der scribed. f

In testimony whereof I have signed my 'naine to this specification in the presence of two subscribing witnesses.

JOHN V. MCADAM.

Witnesses:

J. G. ADERToN, EDWARD W. FURRELL.

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