US2532464A - Corner structure - Google Patents

Description

E. E; SCHLESINGER Dec. 5, 1950 CORNER STRUCTURE Filed Feb. l, 1949 Idlllllldll Patented Dec. 5, 1950 PATENT ori-lcs 2,532,464 CORNER STRUCTURE Edgar E.- Schlesinger,

Chicago, Ill., assignor to Standard Railway Equipment Manufacturing. Company, Chicago, Ill., a corlgioration of Dela- Wall-'e Application February 1, 1949, Serial No. 74,018

3 Claims. l This invention relates to improvements in railway freight car construction and particularly to the structure of corner post for freight carsand the manner of assembling said corner posts to the car.

It is well known that the end walls, for example, of such cars are required toresist the terrific loads imposed thereagainst by shifting lading, such as. pipe, steel plates', lumber, etc., due to service movements of the car.

The customary end wall as now used in the great majority of freight cars comprises a metallic plate, having side fianges, formed on a relatively long radius and spaced parallel corrugations extending from side to side of the plate. The car side wall sheathing laps the ange, and a corner post comprising angularly disposed arms each having a flange is provided, the ange of one arm being attached to the ange of the end wall, and the flange of the other arm attached to the apices of the corrugations, so that said arms and the included portion of the end wall form a box structural section which is attached at its bottom to the car side and end sills, and at its top to the car side and end plates. When welding is the means of attaching the ends to the corner post it is obvious that the flange of the arm of the corner post can only be welded at spaced intervals where said flange rests against the apices of the corrugations in the end wall, and as a consequence the Weld metal is applied in substantially a straight line. Therefore, when the end wall is subjected by shifting lading to a bulging load the tendency is to force the end wall outwardly resulting in the weld metal acting as a hinge, which, experience shows, tears apart under extreme conditions. Y

It is, therefore, an important object of this invention to design the flange of the arm of the corner post which is attached to the apices of the corrugations in such a way that the weld metal will be carried closer to the root of the angle between said arm and its flange, whereby when any load tends to tear the two apart a part of the weld metal will be in tension and a part in compression, materially increasing its effectiveness `n securing the end wall to the corner post.

Other objects and advantages of the invention will appear in the following description thereof.

Referring now to the accompanying drawing wherein like reference characters indicate like partsz.

Fig. l is an elevation of one side margin of a railway car end wall showing the improved corner structure welded thereto.

' 2, Fig'. 2 is a vertical section on line 2 2, Fig. 1. Fig. 5; is a transverse section on line 3 3, Fig. 1. In the drawings lily represents the end wall of an ordinary freight car, but one vertical margin 5 of which is shown, it being understood that the opposite vertical margin is identical therewith. This end wall is provided with a plurality of parallel corrugations Il which extend from side to side of the end wall. At theA vertical side margins l the end terminates in a flange i2 formed on a curve, forming a round corner, and the ends of the corrugations extend around said corner, progressively decreasing in depth and ultimately merging into said ange. The end wall is provid-edwith top i3 and bottom i4' flanges for attachment to the roof l5 and end sill, not shown, of the car.

A. corner pest is provided in this instance comprising angularly disposed arms 23' and 2l each of 2,0 which is provided with a ange 22 and 23, re-

spectively, extending normal to their respective arms so that when applied te a car flange 23 will be parallel with flange i2 and receive therebetween a vertical margin 24 of side sheathing; all 25 being held together by a vertical row of rivets, in-

dicated at 25. The other flange 22 of the corner post will rest flatwise against the apices of the corrugations l i and the usual procedure in welding this flange to the end, is to run a straight bead of weld metal along the edge of the flange Y and across the apex of each corrugation. Consequently, when a bulging load is applied against the end, as is the case when a shifting lading is forced thereagainst due to bufing shocks or the like, the weld metal acts as a hinge, and instances have occurred where the end has been pulled away without any perceptible distortion of the flange. To correct this situation a portion of that part of the flange 22 which rests against the apices of the corrugations is cut away in semicircular form, preferably, as at 2t, and the weld metal applied around the edges of the out away portions and a portion on each side thereof to secure said flange to the apices of said corrugations and material adjacent thereto contacted by said edges. In this manner there is provided not only "a longer bead of the weld metal, but said weld metal is carried closer to the root of the fiange and when subjected to bulging loads of the end, places a portion of the weld metal in compression, v thereby increasing its eiectiveness. Bly welding other than in 'a straight line the hinge center is eliminated, resulting in eiective stress distribution and greater strength of the weld.

Obviously instead of cutting away the flange in the form of a semi-circle, it could be of V-shape or even a slot with similar results.

The accompanying drawings illustrate the preferred form of the invention, though it is to be understood that the invention is not limited to the exact details of construction shown and described, as it is obvious that various modifications thereof, within the scope of the claims, will occur to persons skilled in the art.

I claim:

1. In a railway car having an end Wall comprising a body part provided with a side flange extending substantially normal to the general plane of said wall and a plurality of spaced parallel horizontal corrugations extending to and merging into said side flange, a corner stiiener comprising angularly disposed arms, means to secure the flange of said wall sheet to one of said arms, a flange -along the other of said arms positioned latwise against the apices of said corrugations and spanning the spaces therebetween, a portion of the parts of the stiener flange which rest against said apices being cut away, and weldments securing the edges of said cut away portions to the apices of said corrugations and the material adjacent thereto contacted by said edges, whereby when said end wall is subjected to bulging loads a portion of said weld metal will be in compression, thereby increasing the eiectiveness of said weldments.

2. 'In a railway car having an end wall comprising a body part provided with a side flange extending substantially normal to the general plane of said wall and a plurality of spaced parallel horizontal corrugations extending to and merging into said side flange, a corner stiffener comprising a single piece of metal longitudinally bent so as to form a ilange along both sides thereof, one of said stiifener flanges resting atwise against the apices of said corrugations and spanning the spaces therebetween, the other of said stiffener iianges secured to said end wall ange, said stiiiener ange which rests against said apices prvided with spaced cut away portions coincident with the apices of said corrugations, and weldments securing the edges of said cut away portions to the apices of said corrugations and the material adjacent thereto contacted by said edges, thereby providing more effective stress distribution and greater strength of said weldments.

3. An end wall for a railway car comprising a body part provided With a flange formed on a curve of relatively large radius to form an arch between the body part and flange said body part being formed with a plurality of substantially horizontal corrugations which terminate and merge into said ange, a vertical stiffener for said arch extending between said body part and ange, means to secure one margin of said stiiener to said ange, a ange along the other margin of said stiiener positioned flatwise against the corrugated body part of said end wall and spanning the spaces between said corrugations, the edge of said stiffener ange having spaced cut away portions coincident with the apices of said corrugations, and weldments securing the edges of said cut away portions to the apices of said corrugations and the material adjacent thereto contacted by said edges, whereby when said end wall is subjected to bulging loads a portion of said weld metal will be in compression, thereby increasing the effectiveness of said weldments.

EDGAR E. SCHLESINGER.

REFEREN CES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 1,268,980 Krumholz June 11, 1918 1,290,092 Cole Jan. 7, 1919 2,260,512 Crede Oct. 28, 1941 2,335,459 Shaver Nov. 30, 1943

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