US1253131A - Steel reinforcement for freight-cars. - Google Patents

Description

WA WI. BOSWORTH. STEEL REINFORCEMENT FOR FREIGHT CABS. APPuc' nM FILEDSEPT. s. I9l6.

Patented Jan. 8, 1918.-

2 SHEETS-SHEET 1f wit eooeo APPLICATION FILED SEPT. 6,1916.

Patent er Jam. 8, 1918,

2 SHEEN-SHEET 2.

@712? YUM a) warren n. noswon a or nonrom, was.

Y STEEL nnrnroncnmnnr ron'rnnIeHr-oa'as.

Specification of Letters Patent.

Patented Jan. 3., 19116..

Application'filed September 6, 1916. fierlal No. 118,701.

To all whom it may concern:

Be it known that I, WILBUR M. Bos-v won'rr r, a citizen of the United States of at Norfolk, in the county America, residin of Norfolk and gtate of Virginia, have invented new. and useful improvements in- Steel Reinforcements for Freight Cars, of which the following is a specification.

This invention relates to under frames or steel reinforcements for wooden freight cars. One object of the invention is to produce an under frame having a center sill of novel and improved construction and which will be particularly adapted to resist thrust and,

pulling strains .as well as load strains without danger of buckling or of being distorted or damaged in any way.

A further object of the invention is to provide the center sill or backbone with draft sills of simple and improved construction.

With these and other ends in view which will readily appear as the nature of the invention is better understood, the same consists in the improved construction and novel arrangement and combination of parts which will be hereinafter fully described and particularly pointed out in the claims.

In the accompanying drawings has been illustrated a simple and preferred form of the invention, it being, however, understood that no limitation is necessarily made to the precise structural details therein exhibited, but that changes, alterations and modifications within the scope of the claims may be resorted to when desired.

In the drawings,-

Figure 1 is a perspective view showing about one-half of the under frame, together with one of the bolsters supporting the same.

Figs. 2, 3, and 5 are sectional perspective views taken on the lines 22, 3-3, 4-4 and 5-5, respectively, of Fig. 1.

Fig. 6 is a perspective view of one end of the under frame illustrating a modified construction. 1

Fig. 7 is a sectional perspective view taken on the line 77 in Fig. 6.

Fi s. 8 and 9 are sectional detail views laid in about the same plane illustrating'further modifications.

Corresponding parts in the several figures are denoted by like characters of reference.

, port the flooring of the I center sill angles.

as Fig. 7 but.

The center sill of the improved under frame is composed of a channel beam 15, the central body portion or web of which is presented upwardl with the flanges 16 ertending downward y, in connection w1th angle beams 17 which are securely riveted on the flanges 16, said angle beams havingv broad flanges, the vertical flanges being secured on the flanges of the channel-beam, as

stated, while the horizontal flanges extend outwardly to aflord'supports for the wooden sills which are customarily employed to supcar, but which have not been shown in the drawings. The center sill extends materially beyond or outwardly with respect to the bolster 18 on which it is supported, and with which it is connected by a gusset plate, as seen at 19, said gusset plate being riveted on the bolster as Well as on the horizontal flanges of the The center sill angles, which extend beyond the channel beam 15, are connected together by a terminal tie plate or connecting member 20 having flanges 21 which are riveted on the inner faces of the center sill angles. The terminal tie plate 20 serves also as an abutting member on the inside face of the wood end sills of the car superstructure.

The horizontal flanges of the center sill angles are connected together at intervals by tie'plates 22 one of which clearly appears in the sectional View, Fig. 5, it being understood that any desired number of such tie plates may be distributed throughout the length of the under frame, four being, however, usually deemed suficient.

Draft sills, as illustrated in Figs. 1, 2 and 3, are composed of angle bars 23 riveted on the under faces of the center sill angles, said draft sill angles being reinforced by angle bars 2 1 that are secured on the outer faces of their vertical flanges. The draft ,sill angles 23 are securely connected to the bolster by angle braces 25 (the draft sills themselves do not abut'against the bolster except through angles 25). The reinforcing angles 24 are spaced from the bolster to permit angle brace 25 to make direct connection between draft sill 23 and bolster 18, as

- 17 'serve to attach the frame to the sills of the car by bolting vertically therethe draft sill angles may be variously spaced apart to accommodate draft appliances of various types and dimensions, such appliances, however, being not shown,

An under frame. constructed as described has several advantages over the types of under frames now generally used, and especially over the types in which a heavy H- beam is employed. to constitute the center sill backbone. The center sill channel or top chord member is located at .a maximum distance from the center of gravity of the entirecenter sill so as to give a maximum resistance to strains caused by end shocks on the draft sills 23, such shocks being also transmitted through the entire length of the under frames without injuriously afl'eet-' lng the wooden superstructure.

The wide horizontal flanges of the center sill angles wooden through and also giving the maximum amount of metal at the greatest distance from the neutral axis of the whole section,

serving to resist verticalload strains. The bolsters may be of any well known type,

v either cast steel or anytype of built-up body bolster already .apphed to the car whichis to be equipped withtheimproved under frame. Ifit shall be desired to vary the width of the under frame to accommodate the spacing of the wooden car sills, conveniently accomplished by using a channel beam 15 of greater or less width but "of suflicient weight to give the required 1 strength.

Such variation in width may be accomplished much more conveniently and at less expense-thanwhere a center sill or backbone'of the H-beam type is employed.

In Figs. 6 and? there has been illustrated a modified construction which has particular reference ,to the manner of connecting the draft sills with the center sill. Under this modification the horizontal flanges of the center sill angles 17 are provided with longitudinal slots 27, said slots being spaced from :the vertical flanges .of said angles to suit passa'ge of the sill plates 28 which are securely riveted on the vertical flanges of the center sill angles 1'1, liners 29 being interposed to fill thespace between the slot 27 and the vertical flange of the..- angle bar. L-shaped angle the plates 28 with the horizontal flanges of the angle L-beams being riveted on the under faces of the horizontal flanges of the angle 17, while short flanges ofsaid bars 31 extend later-4 this may be draft rigging for the.

bars 30 are used to connect.

bars 17, the long flanges of saidconnection with the drawings hereto annexed, it willbe seen that I have produced a built-up under frame which is not only possessed of great strength and ability to resist strains, but in which the preponderance of metal has been" located with the ex-.

press end in view of resisting the various strains to which the under frame may be subjected in the most effective way without danger of transmitting destructive strains through the wooden superstructure of the car, and thereby subjecting such superstructure to serious injury. that the improved under frame is capable of being produced at an expense that will compare favorably with that of the various types of under frame in present use.

It may be stated that a very essential, novel and important feature of the constructionof my device consists in the use of the element which I have designated as the gusset plate 19. This gusset plate is a flat plate of steel the side portions of which are beveled what is technicall known as a gusset, the plate being of such width that when it is interposed between the bolster and the center sill beneath materially beyond the side portions of said center sill which in the present instance consists of the horizontal flanges of the angle beams 17. The extended portions of the gusset plateare riveted oii the bolster and the gusset plate is also connected with the bolster as well as with the horizontal flanges of the an le beams by rivets in such a manner as to produce a very durable and strain resisting construction. It will be obvious that any load strainimposed on the center :sill and bolster will be distributed through the gusset plate laterally with respect to the bolster and thusth'e bolster as well as the center sillwillbe very materially reinforced by'the presence of the gusset plate. More than this: whendraft strain is exerted longitudinally on the draft gear with respect to the centertsjilh'fsueh draft strain will be distributed by the gusset plate :with respect tothebolster; and related part It may also be said rearwardly to produce the latter it will extend of; the underframefthereby reinforcing the bolster against buckling or bending in -a horizontal plane. -..hese results would, not

be obtainable wit plate constructed and arranged substanhout the use of the gusset I,

wardly extending horizontal flanges, and

a gusset plate interposed between the center sill and the bolster and securely connected with both the center sill and the bolster saidv gusset plate extending entirely beneath the center sill and above the bolster.

2. In an underfrahie for cars, the combination with a bolster and a center sill of a gusset plate materially exceeding the width of the center sill said gusset plate being interposed between the bolster and the center sill beneath the latter, the projecting parts of the gusset plate being secured on the bolster and intermediate parts of the gusset plate being securely connected with the bolster and with the center sill and abovethe bolster.

3. In an under frame for cars, the combination with a bolster, of a center sill comprising a channel beam having downturned flanges, angle beams having vertical flanges secured on the downturned flanges of the channel beam andoutwardly extending horizontal flanges, and a gusset plate interposed between and connected with the bolster and with the horizontal flanges of the center sill angles, said gusset plate extending entirely across and beneath the center sill.

.between and connected with the bolster and with the horizontal flanges of the center sill angles; the component members of the center sill being extended materially beyond and to the outward of the bolster.

5. In an under frame for cars, the combination with a bolster, of a center sill comprising a channel beam having downturned flanges, angle beams having vertical flanges secured on the downturned flanges of the channel beam and outwardly extending horizontal flanges, and a gusset plate interposed between and connected with the bolster and with the horizontal flanges of the center sill angles; the component members of the center sill being extended materially beyond and to the outward of the bolster, the center sill angles being also extended beyond the channel beam of the center sill;

and means for connecting the vertical flanges 6. In an under frame for cars, a bolster, a built-up center sill supported on and extending materially beyond and to the outward of the bolster, a gusset plate interposed between the bolster and the center sill and securely connected with each sa1d center sill including a channeled beam having downturned flanges, and angle beams secured on said flanges; and draft SlllS connected with and supported by the center sill angles.

7. In an under frame for cars, a bolster, a built-up center sill supported on and ex tending materially beyond and to the outward of the bolster, a gusset plate. interposed betweenthe bolster and thercenter sill and securely connected with each said center sill including a channeled beam having downturned flanges, and angle beams secured on said flanges; and draft sills connected with and supported by the center sill angles and extending downwardly with respect thereto.

8. In an under frame for cars, a bolster, a center sill supported on and extending materially beyond and to the outward of the bolster, a gusset plate interposed between the bolster and the center sill and securely connected with each said center sill including a channel beam having downturned flanges, and angle beams secured thereon and, having outwardly extendin horizontal flanges, and draft sills, inc uding angle beams secured on the under faces of the hori zontal flanges of the center sill angles,

9. In an under frame for cars, a bolster, a center sill supported on and, extending materially beyond and to the outward of the bolster, a gusset plate interposed between the bolster and the center sill and securely connected with each said center sill including a beyond the center sill angles, and means of tying together the horizontal flanges of said extended portions.

10. In an under frame for cars, a bolster, a center sill supported on and extending materially beyond and to the outward of the bolster, said center sill including a channel beam having downturned flanges and angle beams secured thereon and having outwardly extending horizontal flanges, draft sills including angle beams secured on the under faces of the center sill angles that project beyond the bolster, said draft sill angles being spaced from the bolster, and means connecting the bolster with the vertical flanges of the draft sill angles. 4

11. In an nder frame for cars, a bo1ster,'

o center sill supported on and extending materially beyond and to the outward of the bolster, said center sill including a channel integer ing spaced from the bolster, and means con- 10 nesting the bolster with the vertical flanges of the dreft sillangles, said draft sill angles being equipped with reinforcements consistin of an le bars connected therewith.

n testimony whereof I aiiix my signa- 15 BU M. BosWonTH.

I 0091a: 02 nntent my he obtntned for five canto eaten, by addressing the Gommissioner of Patents,

Washington, ID. *3.

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