US1590301A - Rolled-metal piling - Google Patents

Description

J. v LINDENLAUF ROLLED METAL FILING Filed Jan. l5, 1926 Patented .lune 29, 1926.

time

PATENT F'ECE.

EGSEPH LNDLVNLAUF, OF PITTSBURGH,

PENNSYLVANIA, ASSIEGNOR` OF THREE- ElirlE-LHSV TO HERMAN STRATMAN AND TO-EIGIITHS TO HARVEY M. ARONON, BOTH OF PTTSB'URGH, PENNSYLVANA. i

nonnen-METAL PXLING,

Application filed January The invention relates to rolled interlockf ing metal piles of the type, which, when connected together, form a continuous wall consisting ot' a series of troughs or U-sections. The invention has for its principal objects, the provision of a pile construction; (l) having` a kgreat degree of strength and rigidity,both longitudinally of the wall formed,

; and transversely thereof, in proportion to the weight of metal employed, (2) which can be easily rolled by ordinary methods; in which theneutral axis of the pile is parallel to the axis of the wall and which either coincides with such kaxis of the wall or is very close to it in all cases, (e) and in which the interlock is of a very substantial character, readily formed in the rolling operation, and designed to impart a maximum amount of strength and rigidity to the completed wall. Certain embodiments ot' the invention are shown in the accompanying drawings, wherein:

Figures l, 2, 3 and 4: are end views showing different forms of the construction, and

r Figs. 5 and 6 are fragmentary detail views showing the manner of rolling the hooks of Figs. l and 2 preliminary to bending them.

`Referring to Fig. l, A is one complete pile, while B and C are the end portions of adjacent piles identical in construction with A. The pile A consists of a central U- trough or section 2 and two side U-troughs or sections 3 and 4. The pile may be con. structed of a greater number of U-sections, but three of such sections, as illustrated, is the preferred number, as a greater number render the pile more or less unwieldy and difiicult to handle and roll.

The pile may be rolled by the three roll system, the hook being formed during the rolling operation, as indicated in dotted lines in Fig. 5, after which it is bent to the iinal form asshown in Fig. 1. The neutral axis of the pile section is somewhat below the axis m-m of the wall, due to the fact that the two webs 6, 6 lie on the same side of the axis with only the single web 7 on the other side of such axis, but this departure is not great, and, if desired, the oen tral section 2 may be rolled somewhat deeper than 3 and 4, or with its web f? slightly thicker than the webs 6, 6, in order to bring the neutral axis into coincidence with the axis of the wall.

15, 1926. seriaino. 81,394.

vThe end flanges ofthe piles are formed as intel-locks and are preferably substantially equal in length tothe depth of the troughs 2, 3 anda. This disposes the metal of the flanges to the best advantage, and adds greatly tothe stiffness of the complete wall as compared with the one made up of piles having short interlocks. Each liange or interlock is made up oit twoV parts 8 and 9, substantially,equal in length and having an inclined or oblique connecting part 10, lt is the coaction of the two `engaging inclined parts 10, `10 on the flanges of adjacent piles, which Vprevents the piles from separating atterthey are once assembled. This expedient does away with the require ment of thickened or bulbous portions at the ends of the interlocking flanges, suoli as would be required to prevent a separation of the piles, if the inclined'parts 10, 10 were not employed. The inter-locks with bulbous thickened portions at the ends have the dis# advantage of increased difficulty in rolling. The location Vof `the hooks 5, 5 on the outer sides of the interlocking flanges, instead of on` their inner sides, also involves a con* structive advantage, as no ditiiculty is expe,- rienced in forming the hooks during the ordinary rolling operation, if these hooks are formed on the outersides. This is not the case if they were formed on the inner sides ofsuch flanges. lt will also be noted that the pile is vsymmetrical aroundits axis /-g/ at right angles to the axis m-#w so that there is no tendency of the individual piles to twist, either in driving, or when placed under stress applied at right angles to the wall formed, and to which the structure is ordinarily exposed when used as a retaining wall. The advantages of the structure incident to its strength per unit of weight, to the ease with which it may be rolled, and to the superior character of the interlock, will be readily apparent to those familiar with the requirements in sheet metal pile constructions.

Figs. 2, 3 and il illustrate modilications.`

If it is desired to roll the shape by means of the old two-roll system, the hook .5a-is preferably rolled in the position shown by the dotted lines in Fig. 6, after which it is bent to the position of Fig. 2. The groove 11 is provided to facilitate bending after rolling, although this may be dispensed with. Fig. 3 shows two spaces 12, l2 which can be used for packing or which can serve the purpose of providing an earth cushion when driving.` Figa shows a bulb 13 on the ends of the interlocking flanges, thus inciea-singthe bearing at the ends of such anges and giving a somewhat more secure interlock combined with the packing recesses than is the case in the Fig. 3 construction. This pile has, however, the disadvantage of greater difliculty in rolling than the F ig. l construction.

lVhat- I claim is:

l. A wall made up of a plurality of similar interlocking piles, comprising integral rolled sections arranged with their neutral axes in parallelism, and each pile consisting of a plurality of U-shaped troughs with the successive webs thereof on opposite sides of the neutralaxis of the pile and remote tlierefromand with the outer sides of the outer troughs constituting interlocking members 'having a length substantially equal to the depth of the troughs, and each having a hook on its outer side at its base receiving `the end of the next interlocking member,

each of said interlocking members comprising an inner and an outer part lying in substantially parallel planes and connected by a part directed transversely of the planes of such inner and outerparts.

2. VA wall made up of a plurality of simila-r interlocking piles, comprising integral rolled sections arranged with their neutral axes in parallelism, and each pile consisting of a pair of U-sliaped'troughs with a reverse trough therebetween, the outerside of each of said pairs of U-shaped troughs being formed as Van interlock having a length substantially equal to the depth of the U-shaped troughs and having a hook on its outer vside Vat its base receivingthe end of the next interlock, each' of said interlocks being formed intwo paralleland'substantially equal parts with a transverse comieetingpart therebe- Y tween and the neutral axis of the pile lying substantially midway between the webs of the troughs.

V3. A wall made up of a vplurality of similar interlocking piles, comprising integral rolledwsections arranged with their neutral axesin parallelism, and each pile consisting `of aplurality of U-shaped troughs with the outer sides of the outer troughs constituting interlocking members having a length substantially equal to the depth of the troughs, and each having a hook on its Vouter side at its base receiving the endv of the next` interlocking member, each of said interlock-\ ing members comprising an inner and an outer part lying 'in substantially parallel planes and connected byV a part directed transversely of theplanes of such inner and outer parts, and each of said members being of decreasing thickness from its Abase toits outer end. v

ly of the planes of such inner andl outer parts, and each of said members being of a thickness at its outer end which is no greater than that at its base and the neutral axis of the pile lying substantiallymidway between the webs of Ythe troughs.

In testimony whereof, I have hereunto subscribed my name this 6th day of January, 1926. i

' 1 JOSEPH LINDENLAUF.

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