US1585550A - Draft rigging - Google Patents

Description

B. W. KADEL DRAFT RIGGING May 18 1926.

Patented May 18, 1926.

UNITED STATES PATENT OFFICE.

BYERS W. KADEL, OF BALTIMORE, MARYLAND, ASSIGNOR, BY ME SNE ASSIGNMENTS,

DRAFT RIGGING.

Application led December 15, 1921. Serial No. 522,576.

The invention relates to draft rigging for railway cars and more particularly to a4 rear draftcasting and combined center filler brace.

The principal object of the invention is to provide in a single structure a body bolster center casting and rear draft lugs.

Another object of the invention isto provide in this construct-ion means for suitably supporting the truck center plate.

p A still further object of the invention is to provide a casting of the character described Wherein the metal is arranged so as to give the maximum strength value for the minimum expenditure of material and to arrange the various elements of the casing so as to cause them to react to best advan- 'tage to the variety of forces to which they may be subjected from the several different functions imposed upon a single integral casting.

A still further object of the invention is to provide a casting in such a form as to render the necessary parts of it accessible to inspection and to so construct the casting as lto admit of the ready driving of the necessary attaching rivets.

A still further object of the invention is to so arrange the various structural elements of the casting as to make the same easy to mold and to avoid excess foundry loss by the elimination from the casting of shrinkage, cracks, checks, and other common causes of loss which are experienced in casting large metal objects when due cpnsideration is not given to the combination p of thin and thick metallic sections.

Various other objects and features of the invention are hereinafter brought out in a more detailed description of the particular modification of my invention which has been chosen for the purpose of illus tration.

In the drawings:

Figure 1 is a view partially 1n plan and partially in longitudinal section, of a combined stop center brace and center bearing embodying my invention, the sectlon being taken on line 1 1 of Figure 2. In dotted lines have lllustrated the position of the yokeof the draft rigging when in normal positlon.

Figure 2 is a longitudinal vertical section on line 2 2 of Figure 1, the direction of view being indicated by arrows at the ends of the section line.

Figure 3 is a rear end view partially in elevation and partially in section, the sectlon being taken on line 3-3 of Figure 2.

Figure 4 is a view in front elevation partially in plan and partially lin section, the section being taken on line 4-4 of Figure 2, adjacent portions of the car being shown in dotted lines. f

Throughout the specification and drawings like parts are designated by like reference characters.

In the preferred embodiment of the in vention here illustrated, the. casting 1 is provided with side walls 2 which are adapted to contact and preferably conform to the inner faces of the draft or center sills 3 which are illustrated in dotted lines in Figure 4. The center sills 3 are preferably connected by a top cover plate 4 to form the usual box center sill construction. The sills 3 arealso preferably provided with inturned bottom fianges 5 so that in effect the lower portions of the sills are in the form of an I-beam and the upper portion of the sills in the form of the or inary rolled channel. The casting 1 is arranged to bridge between the sills 3 and to deliver all of the buing forces thereto.

The casting 1 is provided with a bottom Hoor 6 which is approximately in line with the bottom edge of the side walls 2 except at the intermediate portion designated as 7 Where the floor is dlverted from its normal plane to conformto the upper surface of the nturned flanges 5 of the center sills. The side walls 2 are connected in line with the body bolster 8, illustrated in dotted lines in Figure 4, by means of a transversely arranged upright wall or web 9, and formed on the upper portion of the wall or web 9 is a transversely extending fiange 10. This construction forms a beam across the center sill member so that when the car body rocks and the load is concentrated at one edge of the nter plate 10, also illustrated in dotted lines in Figure 4, the casting will have sufficient beam strength to resist the forces to which it is under these conditions subjected. The thimble 11 which is adapted to receive the king bolt (not shown) 1s provided at the top with a closed wall 12 and is formed preferably in the transversely extending upright wall 9. The body bolster 8 is secured to the center sills in line with the downwardly extending intermediate portion 7 of the casting 1. The bottom tie member 13 ,of the bolster, which preferably extends directly under the portion 7 of the casting 1, is clearly indicated in dotted lines in Figure 4.

The portions of the side walls 2 of the casting 1 which are above the downwardly extending portion 7, are provided with rivet receivingopenings 14 through which the securing rivets 15 are adapted to extend. Preferably I provide four vertical lines of rivetl openings for the rivets 15 and these rivets, in addition to connecting the casting 1 to the center sills, also form means for connecting the portions of the bolster to the center sills and to the center casting. Additional rivet `receiving openings 17 are provided forward of the rivet openings 15, as will be hereinafter more fully described.

The side walls 2 of the casting are extended forwardly of the upright riband are provided with transversely arrangedwalls or inwardly extending flanges 18 which preferably form stop faces or lugs to engage the movable element of the draft rigging. In this manner the ordinary draft lugs are formed as an integral part of the body bolster center casting 1 The stop faces or flanges 18 are supported by a plurality of longitudinally extending ribs 19, 20, 21 and 22 which extend from the rear faces of the flanges 18 and from the inner faces of the adjacent side walls. It will be observed that the u per rib 19 preferably follows the line o the upper ed e of the casting and that the casting, as efined by this rib, is

higher at the forward or draft lug end than at the rear or bolster center filler end of the casting. This construction is devised in order to make the outer rivets 23 more accessible from the rear as it is sometimes necessary, in driving these rivets, to reach over the transversely extending flange 10".

The ribs 19 and 22, it will be observed from Figure 4, are formed by inwardly extending portions of the side walls 2, while the ribs 20 and 21 are formed by what may be termed a convolution or inwardly ex-. tending bend in each of the side walls 2. By so constructing the casting I provide in effect, a series of convolutions, the convolutions formed between the ribs 19 and 20 and between the ribs 21 and 22 opening from the inner face of the casting, while the convolution between the ribs 20 and 21'opens from the outer face of the casting. vBy this construction I provide reinforcing fianges without increasing the thickness of the metal and provide the side walls with webs of substantially constant and uniform thickness.

The inner portions of the stop lugs 18 are spaced apart suiiciently to accommodate the rear end of the ordinary vertically arranged draft gear yoke 24, shown in dotted lines in Figure 1. The draft gear engaging face -25 of this yoke is preferably positioned in alinement with the outer faces of the lugs 18, while the rear end of the yoke is normally, preferably, spaced from a cross wall or transversely extending web 26 of the casting, which wall or web defines the length of the yoke receiving pocket. By this construction it will be evident that any yield ing forward due to elongation of the yoke or to bending of the draft rigging parts, would cause the rear end of the yoke to come in contact with the transversely extending wall 26 which would act to prevent further rearward movement.

The transversely extending wall or web 26 is arranged in line with and may be considered as an extension of the portions 27 of the side walls 2. By this construction the entire rear end of the yoke, it will be observed, is surrounded by a continuous wall of metal. This not only forms a substantial bufling arrangement for the yoke when the necessity arises, but also rovides liberal wearing surplus for the si e edges of the yoke. In order to further strengthen the inner edges of the lu 18, I preferably provide inwardly exten ing vertically arranged flanges 28 which connect the ribs 19 and 20 and 21 and 22, respectively. At their inner` ends the flanges 19 and 22 merge, respectively, into the transversely extending flange 10a and into the bottom wall or floor of the casting, while the intermediate ribs 2O and 21 merge into the upright rib 9 ofthe casting, as will be hereinafter described.

It will be noted that the bottom rib 22 is approximately on a line with the diverted portion 7 of he floor 6 of the casting. This rib is located somewhat above the lower plane of the floor 6 in order that it may clear the inturned fiange 5 of the channel draft sills. In other words, this rib is in effect a continuation of the angularly disposed portion 7 of the door 6 and its angular form gives it great rigidity to resist the forces to which it may be subjected.

Spaced from the Hoor portion 6 of the casting 1 and extending transversely of the casting, is a second wall or door web 29 which extends from the crossweb 9 forwardly fo the cross web 26, preferably in line with the ribs 21. The ribs 21 are in reality continuations of this transverse web 29. The rib 29 is of course adapted to receive forces from the rib 21 and from the transversely extend ing flange 26. This rib has also an important function in that it forms a gusset to hold the side walls 2 of the casting in alignment in cases Where more load is delivered to one of the center sills than to the other, that is it provides means for preventing relative movement beween the channel draft or center sills.

Adjacent the upper edge of vthe flange or web 26 I provide a rearwardl extending flange 30 which is adapted to rther reinforce the said flange 26.

A vertic'al web 31 preferabl extends longitudinally of the casting an approximately on the center line thereof and serves to support the floor 6 and to brace this floor and tie the same to the upright transversely extending web 9. I preferably extend this web both vabove and below the transversely extending horizontally disposed web 29 and also extend the same forwardly so as to intersect the wall or web 26 and the flange 30 thereof. It will be thus apparent that this vertically extending web thus forms a sturdy resisting medium to any forces which may at times be delivered to the transversely extending Web 26 by means of the yoke member 24.`

While the convolute form of casting may be advanta eously employed throughout the entire lengt thereof if desired, I dpreferably arrange the convolute portion a jacent the forward end only so as to not interfere with the center line of the bolster connecting rivets. I therefore provide at an intermediate point between the lugs 18 and the transverse upright web 9, a return bend 31, as clearly shown in full lines in Fi re 1, whereby the side walls 2 of the casting are returned at their central portions to the plane of the upper and lower portions, and in order to reinforce the convolute portions formed between the ribs 20 and 21, I provide further ribs 32 preferably in alinement with the portions 27 of the web, the ribs 32 extending from the web 26 tothe upright web-9, as will clearly be seen from Figures 1 and 3.

The arrangement of the various walls, ribs and other members of the casting, as shown on the drawings and hereinbefore described, constitutes Aa most effective means for receiving the variety of forces to which a combined casting is subjected.

All of the parts of the casting as formed, are readily accessible -both for inspection and to permit the application of the .casting to the car underframe, and the junctures of the various portions are arranged so as to eliminate to a large extent if not entirely, all shrinkage, cracks, chec and other defects incident to the manufacture of such a casting. The casting is of maximum strength for the amount of metal used and it will be seen that the casting is so devised as to distribute throughout the same, all loads, strains or forces to which the various elements thereof. are subjected in use.

Stop lugs are frequently subjected to column loads of a more or less eccentric nature due to the action of the draft rigging so that there, is oftenx a tendency for these lugs to bend away from the sills. That is, the lugs are often subjectedv to loadsat an angle to their faces rather than at right angles thereto, with consequent bending.

stress applied to the lugs and to the car sills. By forming them in the peculiar manner herein shown and described, they are adapted to resist all such actions and are greatly strengthened against bending stresses so applied.

Having thus described my invention,'what I claim is with spaced vertical side walls and a. floor connecting the same near their lower edges, a vertically arranged web joining the Iside Walls over the said floor portions of the casting, the side walls being extended toward the front of the castin to form continuous draft gear stops, the sai extensions being of open ox shape in cross section, the intermediate portions of each of said stops being connectcd by a Alongitudinally extending upright flange.

2. In combination with a center sill formed of a pair of spaced channel members with inturned bottom flanges, a bolster center filler having s aced side walls arranged to t between t e webs of the center sill channels, a horizontally arranged floor member connecting the said side walls near their bottom edges, the said floor member being diverted near its junction point with the side walls from its normal horizontalv plane to conform to the contour of the said inturned flanges of the center sill channels, draft lugs formed at the front end of the said casting, the same having horizontally arranged ribs near vtheir lower edges, said ribs constituting extensions to the said diverted portions of the licor member.

3. In combination with a center sill formed of a pair of spaced channel members with inturned bottom flanges, a bolster center filler having s aced sidewalls arranged to lit between e webs of the center sill channels, a horizontally arranged floor member connecting the said side walls with the bottom face thereof on line with the bottom of the center sill channels, the side walls of the castings being extended forwardly to form draft gear stops, the said Hooi' member having forward extensions above the general plane of said floor, the same being attached to and forming stifening ribs 'for the draft gear stop members.

4. A bod bolster center casting formed with spacedy vertical side walls and a floor connecting the same near their lower edges, a vertically arranged web joining the side walls over the said Hoor portions of the casting, the side walls being extended toward the front of the casting to form draft gear stops, a flange formed along the top edge of the said web` the said flange being extended forwardly along the side walls to form stiffening ribs for the draft gear stops.

5. A body bolster center casting formed with spaced vertical side walls and ay floor connecting the same near their lower edges, al vertically arranged web joining the side walls over the said floor portions of the casting, the side walls being extended toward the front of the casting to form a draft gear stops, a flange formed along the top edge of the said web, the said liange being extended forwardly along the upper edge of the side walls to form stiifening ribs for the tops of the draft gear stops.

6. A body bolster center filler with forwardly extending portions spaced from each other and formed as draft lugs, the said draft lug portions having transversely arranged stop faces with a plurality of horizontally arranged ribs secured to the rear faces thereof, and vertically arranged walls connecting the edges of some of the adjacent ribs, some of the said vertical walls being disposed at the inner edges of the ribs and some at the outer edges thereof.

7 In combination with a. center sill formed of a pair of spaced channel members, a bolster center filler having spaced side walls arranged to fit between the webs of the center sill channels, a horizontally arranged floor member connecting the said side walls near their bottom edges, draft lugs formed at the front ends of the said casting, the same having horizontally arranged ribs near their lower edges, said ribs constituting extensions from the said ioor member.

8. A body bolster center casting having spaced parallel side walls, said side walls having at their front ends transversely arranged walls extending inwardly from the side walls toward each other and adapted to form draft gear stops adapted to present uninterrupted faces for co-action with the rear follower of the draft rigging, horizontally arranged ribs joining the rear face of each of the said stop walls with the inner face of the adjacent side wall, the. side walls being omitted between some of said ribs and there being a vertical wall of metal arranged to connect these ribs at their inner edges.

9. A body bolster center casting having spaced parallel side walls, said side walls having, at their front ends, transversely arranged walls extending inwardly from the side walls toward each other and adapted to form draft gear stops, there being an open space between the said draft gear stops suitable for the reception of the rear end of an ordinary draft gear yoke, a flan ed cross member uniting the side Walls, horizontally arranged ribs joining the rear faces of each of the said stop walls with the flanged cross member, the flange on said cross member being arranged in alinement with the said horizontally disposed ribs and joined to the innermost portion of the respective side walls.

10. A body bolster center filler having spaced parallel side walls, the forwardly extending portions thereon being formed as draft lugs, the transversely arranged por tions of said lugs being adapted to form a follower stop, horizontally arranged ribs connected to the rear faces of said draft lugs, the said side walls being extended to form webs joining the outer edges of some of the ribs, there being vertically arranged walls joining the inner edges of other of the ribs, and a second vertically arranged wall connecting said first named vertical walls and extended across the casting at the rear of the draft lug portions to form a transverse tie therebetween.

11. A body bolster center casting formed with spaced vertical side walls and a floor connecting the same near their lower edges, a second floor connecting the said side walls at points immediately above the bottom floor member, continuous draft lugs formed on the forward end of the said casting, the same having transversely arranged stop faces with horizontally arranged ribs attached to the rear thereof, some of said ribs coincidin with and forming extensions of the sai second floor member.

12. A body bolster center casting formed with spaced side walls, and a transverse connecting Hoor, the said casting having draft lugs at its forward end, the same being formed with transversely arranged stop faces, horizontally arranged ribs extendlng from the rear of the stop faces toward the rear end of the casting, the said side walls being carried forwardly to the front end of the draft lugs, and connecting the edges of the said horizontally arranged ribs, the said side walls being diverted out of their normal planes between some of the ribs, and arranged to connect sai l ribs at their innermost edges, the remainder of said ribs being joined by the said side walls at their outermost edges.

13. A body bolster center casting formed with draft lugs at its forward end, said draft lugs having a yokeaeceiving space between their innermost faces, continuous transversely arranged walls formed on the front end v ef the draft lugs, and adapted to form draft gear seats, intermeidiate portions:l ef said face yof the adjacent side Wall, a horizontal Hoor member joining the said parallel walls near their bottom edge, a second horizontal ioor extendin between the side walls above the first mentioned fioor, the plane of the said second floor coinciding with the plane of one set ofthe ribs, the said ribs forming extensions from the said floor, there bein a vertical wall of metal joining these ribs with the next adjacent ribs, said vertical wall being extended across the casting on line with the front edge of the said second licor, and to the rear of the said draft gear stops.

15. A bod bolster center casting having spaced parallel side walls, said side walls having at their front ends transversely arranged walls, extending inwardly toward each other and adapted to form draft gear Stops, horizontally arranged ribs joining the rear face of each of the said stop walls with the inner face of the adjacent side wall, a horizontal ioor member joining the said parallel walls near their bottom edge, .a lsecond horizontal "floor extending between the side walls above the first mentioned floor, the plane 'of the said second ioor .coinciding with the plane of one setof the ribs, the said ribs forming extensions from the said floor, there being a vertical wall of metal joining these ribs with the next adjacent ribs, said vertical wall being extended across the casting on line with the front edge of the said second floor, and to the rearfof the said draft gear stops, and a horizontally arran ed ange at the upper extremity of the said vertical wall, the plane of the said iange coinciding with the other set of ribs, and forming a continuous hori-Y zontal bar of metal therewith.

16. A body, bolster center casting having spaced parallel side walls .formed with convolutions, portions of which extend 1nwardly toward each other and other portions of which provide draft gear stops there beingan open space between the sai draft gear stops suitable for the reception of the rear end of an ordinary draft'gear yoke, a transverse wall of metal connecting the said draft gear stops at the rear of the said yoke space, said wall of metal being arranged in a transverse vertical lane, there being a vertically arran ed wal extending rearwardly from sai transverse wall immediately back of the yoke space, said wall being arranged in a vertically lon 'tudinal plane. 1 A body bolster center casting having spaced parallel side walls, said side walls ha at their front ends transversely arranged walls extending inwardl and toward each other and adapted to orm draft gear stops, there being an open space between the said draft gear stops suitable for the reception of the rear end of an ordinary draft gear yoke, a transverse wall of metal connecting the said draft gear stops at the rear of t e said yoke space, said walL of metal being arranged in a transverse vertical plane, there being a vertically arranged wall extending rearwardly from said transverse wall immediately back of the yoke space, said wall being arranged in a vertically lon 'tudinal plane, and being extended bac to the said center plate floor andv arranged to form a support therefor.

sesv

18. A body bolster center casting having i spacedtparallel side walls, said side walls having at their front ends transversely arranged walls extending inwardly from the side walls toward each other, and adapted to form draft gear stops, a horizontally arranged reinforcing rib connecting the rear face of each of the said stop walls with the inner face of the adjacent side wall, and

upright webs extending rearwardly from;

the adjacent faces of said stop walls for reinforcing the latter.

19, A combined back stop and tie casting involvin spaced side walls, each of said side wa being provided for a portion of its length with a convoluted web, stop flanges formed on said side walls at the forward end of each convoluted web, and a cross member uniting the inwardly extending portions of they convoluted webs.

20. A combined back stop and tie casting involving spaced side walls each of which is formed with a plurality of inwardly extendin' longitudinally disposed flanges, vertically disposed flanges provided on said side walls and adapted to form draft gear stops, a plurality of horizontall disposed anges united with said vertical ianges andv arranged between the inwardly extending anges of the side walls, and a cross member for connecting the said last named horizontally arranged flanges, portions of said cross member extending forwardly and forming upright flanges connecting said last named horizontally disposed lianges.

21. A combined back stop and tie casting having a plurality of s aced` side walls, portions of which are ormed with convolutions, stop ianges formed on said side walls adjacent one end of said convolutions, said flanges being reinforced thereby, and means including a cross member uniting the inwardly extending portions of said con- Volutions at a point in the rear of said stop ianges, said cross member being formed with a fiange arranged in alinement with the inwardly extending convoluions of the side Walls.

22. A combined back stop and tie cast-ing having a plurality 0f spaced side Walls, stop flanges formed on said side Walls, means for reinforcing Jche said flanges, said means coniprising a plurality of inwardly extending flanges formed on each of said side Walls, and means for connecting same to said last named flanges, said means being arranged in alinemenfJ with the respective inner edges of said first named flanges.

In testimony whereof' I affix my signature.

,BY-ERS W. KADEL.

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