US1268745A - Bending corrugated material. - Google Patents

Description

CHARLES E. Maenner ivrAivsrInLn; oHro:

` mimmo conanaarnnivrnrnnren.

a Speoicat'onmt Letters *Patenti Patented J-ule 4,1918. l

" Applicazibnnleaiuebruanyia, 1917." serial No. mana?,

To altlvwkomitmay concern;

Be it knownth 13111,; C

Richland and.. State of Ohio, haue invented certain new and useful` Improvements, in.` Bending CorrugatedI Material; ofgwhichk they following isa specification.

This invention: relates to bending, corragated.material. a i t a a The primary. object ofythsinvelltion isto bend corrugated material in such a, manner;

as to`V form flanges thereonwithout subject# ing the materiaL to, excessive strain, stness,

stretching, unduefracture or weakening of' the, fibers of thematerial'.. t i

Another object of thisv inventitant is l to t vide a` method; of?formmg` flanges integral;

with the, body, poitiouiof cor,rugatedtmate-v t rial. in. a mannen thauwill notpserously af,b feet the tensile strength., of. the i materialv forming the flanges.`

Av further object; ofthis; intention to `forml flangeson` couru gatedl mat'erat having.; t a seriesl` ofL alternateA depressions, and ridges, t

' the t depressionsbeing, t formed concave` ,and

l lation. to the convex portion; lofthe corru.-

continuous. with, f but in, alined';` angular. t re-v` gated; material.` i i A. further object` toipnovide; means4 throughl themedium off flanges formed. om corrugated maternalto t connect t sections, of

culvert pipes thereby constructingba culvert pipe; off separate; sections; which efore being connected permit of being closely and snugly.y packed together economiaing` in, star-vi t age space and permitting the transportation..

of said sections closely and compactly packed together.

A further object consists in bending corrugated material at right angles to the body portion without sub]ecting it to undue strain to permit the flanges to extend around and cover the corners of a rectangular building or the like, thereby obviating the use of an extra corner piece.

I attain these and other objects by the method of making and constructing the article of manufacture, illustrated in the accompanying drawing, in which:-

Figure 1 is an exterior side view of two sections of corrugated material formed to be used for culvert pipes and provided with integral flanges showing same assembled reparatory to being fastened together by olts or the like.

a nLEsEgMlaRunN a citizen of tlleUnited States of America,

residing. aty Mansii'eldgtV in. the` county, of

i of one oftheculfvert pipe sections showin I thev relation and form ofthe `face ofthe Fig. 2 is a perspective view of Fig.A l showing `the a culvert `pipe` `sections nested', preparatory to shirliping,"` transporting or shipping: same t in compact form.

Fig',4 Bis a perspective view of Fig,.1 showing,a. portion, of the interion: exterior and' one end of, the culvert pipe sections. a

Fig. l 1s an interior View ot a fragment flange withresp ect4 to corrugations.4

Fig., 5 is. a; perspectivey view ofiV a convene tional rectangular structure formedrof" sections of flangedV corrugatedl material,` show-` ingf'the method of using said material?` for covering structures of the form and type:

described` The drawings show corrugated material bent, in. such; a( manner as to provide integral flanges Vfor fastening sections of "thematerial together to provide culvert pipes andf the,

methodffofflusingthe sections of said mate,- rial for covering rectangular structures or thelike.. i L

It will bef noted thatwhen the sectionsy are used. for t coveringl a rectangular structure or thellikertleiflanged portions ofeach section a overlap the unfi'anged` end" portions ofi7 the: next succeeding sections. at the corners ofthe structure.

1n. constructing the t corrugated material A to provide .culvert pipe sections, as shown ini F 1g. ha .seines ofalternateconoave. portions 1 and convex.t portions 2 are formed', as

shown. The corrugated material is then clampedfseomielv at` aI pre-,determined point sitiY esto leave a margin of the corrugated material extending beyond the clamping meansand in a position to be bent freely in an angular relation to the body portion of the corrugated material which is held in a pre-determined position by the clamping means.

Pressure is exerted upon the margin of the corrugated material that extends beyond the clamping means forming the angularly related flange C as shown clearly in Fig. 4. In exerting pressure upon the margin of said corrugated material to form the flange, the pressure means or die is formed and arranged so as to form a flange on the corrugated material having a series of alternate concave depressions and convex ridges.

The pressure means or die is shaped and designed to press against the convex portion of the corrugated material and form a concave depression in line but in angular relation to the convex portions of the corrugated material and a convex ridge in line but in angular relation to the concave portions of the corrugated material, thereby forming a iiange in angular relation to the body portion of the corrugated material having a series of convex ridges and con# cave depressions respectively on a plane With each other.

Attention is called to the fact that in ex# erting thepressure upon the convex por tions of the corrugated material preparatory to and in forming an integral angularly related flange upon the corrugated material With concave depressions in reverse relation, that undue stretching, straining and frac ture of the fibers of the corrugated material are substantially eliminated and kinking of the corrugated material prevented, as the excess or surplus material forming the convex portions of the body of the corrugated material follows the line of least resistance and forms a series of convex ridges on the flange in line but in opposed relation to the concave depressions of the corrugated ma-` terial.

In bending corrugated material to pro?` vide a flange as described, unduestress and" strain of the material incident to bending corrugated material in the conventional manner vare eliminated.

In the operation described, the bending strain when a flange is being formed on the corrugated material is equalized along the line indicated by reference letter Dv and the tensile strength of the corrugated material is no more affected than in the case of bend-` ing iianges on plane material. Y

It will be noted that economy in space, storage capacity and convenience and facility in shipping or transporting are accom; plished by making culvert pipe in sections,

, .Fig. 2.

alternate ridges and depressions, consisting in 'bending the edge of the material to form aiiange and simultaneouslyforming such iiange toi present alternate ridges andy depressions substantially similar to andV uni form With such formations in the material but of opposed registryfvvherebyfeach ridge and each depression of the materialmerges' into a depression and a rid'gerespectively of theflange.

Q. The herein-described method of form-- ingflanges on corrugated material having alternate ridges'and depressions consisting in bending the edge of the material to form a iiange, forming the flange With alternate ridges'and depressions merging intoand registering with the non-similar formations ofthe material, the' line of merger lbetween A such formations of the material and flange constituting the line of bend;

3. A lcorrugatedjstrip having ridges and depressions and an angular-ly related flange on one edge thereoffhaving substantially similar 'ridges and depressions as the strip arrangedin exactbpposite-"order `to such formations'of the strip, the lineof bend of the flange `constituting plane of the material to avoid fracture.

In testimony Whereof'I aiiix my signature.

f E. MARTIN;

Copies of this patent may 'be obtained for five cents each,by addressing the Gommissioner of Patents,

Washington, C. i y i p 4 the plane of least projection of the materlalbeyondthe' normal

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