US1546953A - Sheet-metal end structure - Google Patents

Description

Judy 21, M25.

Original Filed Oct. 1, 1920 N. C. THALHEIMER SHEET METAL END STRUCTURE 2 $heets-$heet 1 m y m a L *2 {E 0 0 Q I 0 E} July 21, 1925a N. C. THALHEIMER SHEET METAL END STRUCTURE Original Filed Oct. 1, 1920 2 Shams-Sheep 2 Patent ed July 2 1925.

UNITED STATES PATENT OFFICE.

NICHOLAS C. THALHEIMER, OF CHICAGO, ILLINOIS, A SSIGNOR TO WALTER I. MURPHY, OF CHICAGO, ILLINOIS.

SHEET-METAL END STRUCTURE.

Application filed Octobergl, 1920, Serial No. 413,966. Renewed June 9, 1922. Serial No. 567,125.

To all whom it may concern.

Be it known that I, NICHOLAS C. THAL- imIMER, a citizen of the United States, re

siding at Chicago, in the county'of Cook and State of Illinois, have invented a new and useful Improvement in Sheet-Metal End Structures, of which the following is a specification.

This invention relates to improvements in end structures for railway cars and more particularly to sheet metal ends for freight cars.

The end of a freight car is subject to very severe shocks and stresses on account of the tendency of the cargo to shift when the train starts and stops and in switching and also to the tendency of the superstructure of the car to weave while the train is in motion. To strengthen this type of car, ends have been constructed of one or more sheets or panels of metal, usually steel,

which sheets or panels are formed with corrugations for rigidifying the structure 2 to more readily meet impacts from without,

strains from weaving.

It is the object of this invention to provide an end of the sheet metal type which is adaptable to either Wooden car frames or all metal freight cars and that may be employed for strengthening gondola cars, box cars, or other similar cars. It is a further object of this invention to provide the sheets or panels of the end with corrugations of particular contour that from their form and duration are peculiarly adapted to meet the stresses and strains already described. While the corrugations are preferably formed parallel, their relation to each other or their direction is immaterial, likewise the corrugations may be all pressed from one side of the sheet of metal or may be formed from opposite sides, as desired.

While the preferred form of this invention is illustrated upon the accompanying sheets of drawings, yet it is to be understood that minor detail chan es may be made without departing from t e scope thereof.

In the drawings:

Figure 1 is a view in end elevation of a box car illustrating an embodiment of this invention.

Figure 2 is a view in horizontal section cargo thrusts from within, and the racking through the end taken on the line 2-2 of Figure 1, illustratingthe attachment of the 6 end to a car having a wooden frame.

Figure 3 is an enlarged detail view in vertical section taken on the, line 33 of Figure 2.-

Figure 4 is an enlarged detail view in verview taken on the line 7-7 of Figure 6.

looking in the direction of the arrows, with the parts beyond the line shown partly in perspective and partly in section. p y

The box-car end, as illustrated, comprises two or more sheets or panels 1, preferably of pressed .steel, which are attached tothe corner posts, end plate and end sill in the usual manner. Figure 2 illustrates a means of attaching the panels to a wooden corner post 2 by flanging the ends of the panel and so securing the flanges to the post.

A plurality of parallel strengthening corrugations are formed in each panel 1 which merge at their ends into the lane of the panel so that the panel has a portion about its edges.

In the form of the invention illustrated, the corrugations or strengthening ribs are all pressed from the same side of the metal sheet, as shown in Figure 2. At the center the corrugatlons are continuous and similar comprising main walls 3 forming substan-' tially similar oppositely disposed angles to the perpendicular to the plane of the panel joined by substantially equal connecting portions 4 and 5 with the portions on the same side of neutral axis lying, in cross section,

, in a plane parallel to the plane of the panel.

The depth of the corrugations constan y decreases from center to ends, as shown in Figure 2. As shown in Figures 3, 4 and 5, as depth decreases constantly the main walls 3 decrease constantly in height and area per unit length whilethe outer connectin portions 4 constantly increase in width an area per unit length with the other connecting at marginal 85 portions 5 constantly decreasin proportionately until the main Walls an connect-- ing portions merge into the plane of the panel forming a fiat margin adjacent the end1 pf the panel, as shown in Figures 6 an While the connecting portions 4, of in-- creasing width and decreasing depth, are shown as formed on the exterior surface of the anel, their relation to the connecting portlons 5, of decreasing width and decreasmg depth, may be reversed when the cor- 'rugations or ribs are pressed from the same side of the metal sheet Without departing from the spirit of this invention.

In this construction the amout of metal disposed at a distance from, and, 'on one side of, the neutral axis decreases constantly from ends to center and on the other side increases proportionately, and, in pressing, the amount of stretch of the metalincreases proportionately to the constantly increasing depth of the corrugations from ends to center. Since in a corrugation of uniform contour throughout the strength increases in proportion to the square of the depth, the

\ varying proportions or contour of the ribs tions, asshown, to which the wooden lining is nailed.

What I claim is:

1. A metal panel for car ends having a plurality of corrugations therein formed with main walls of constantly decreasing area per unit length from center to ends, and portions connecting said main Walls some of which constantly decrease in width from center to ends.

2. A metal panel for car ends having a plurality of corrugations therein formed with main Walls of decreasing area per unit length from center to ends, and portions connecting said main walls, a number of which increase in area per unit length from center to ends and a number of which decrease in area per unit length from center to ends.

3. Ametal panel for car ends having a plurality of corrugations therein formed with main Walls of constantly decreasing width from center to ends, and portions al- 'ternately connecting the outer and inner ends of said main walls, with the alternating NICHOLAS C. THALHEIMER.

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