USRE16115E

USRE16115E - Poration

Info

Publication number: USRE16115E
Authority: US
Publication date: 1925-07-14

Description

July 14, 1925.

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' core to form the side langes and Reissued July` 14, 1925.

f UNITED STATES JULIUS H. SC'HLAFLY, OF CANTO'N, OHIO,

ASSIGNOB TO UNITED ALLOY STEEL COR- PORATION, OF CANTON, OHIO, `A CORPORATION OF NEWYORK.

origini No. 1,434,068, dated To allwhom it 001mm:

Be it known that 1,. J ULIUs SCHLAFLY, a citizen of the United States, residing at Canton, in the county of Stark and State of Ohio, have invented a certain new and `useful Improved Method of Making Corrugated Cores, of which the following is a specication. l 2

vThe invention relates te the manufacture of transversel -corrugated sheet-metal cores `for concrete oor-construction; and the object of theimprovement is to form the cores with deepencorrugation than canbe made byvordiinary methods, so as to increase the supporting Strength ofthe cores.

A common method of making such cores is by a pressing or stamping voperation to form the transverse corru ations at the same time the core is sha from a plain sheet of metal, andas the length of the sheet is necessarily shortened by the formation of the corrugations ofthe core, the depth to which the oorrugations can be formed .-is limited and 'the supporting strength of the core is likewise limited.

The improved method involves an initial corrugation of a plain sheet so as to accumulate or gather the metal and shorten the sheet to or about the length of the finished core, a subsequent shaping of the partially formfthe arch angles while forming deep corrugations from the gathered metal, followed by a nal shaping ofthe arch angles.

The initial'corrugations can be made in any form or of any dimensions which will accumulate suiiicient metal to permit the formation of the desireddeep corrugations Without any considerable stretching of the metal be ond the necessary tension which is desira le tov take up all the kii-.nks and bends there may be in the ordinary sheet;

and the iinal corrugation of the ianges may correspond to the corrugations in the body of the core, ormay be reversed at the angle of the flange in Well known manner s as to increase the strength of the flanges; and

' both arch angles may be finally shaped by a single operation or by separate operations as may be desired.

The accompanying drawings forming a part hereof illustrate various steps which nm'rngn orV MAKING coanUGATED comas.

october 31,- 1922, serial No. 538,783, inea February 2s, 1922. Application for reissue led June 23, 1923. Serial No. 647,366.

may be employed in carryin out the improved method,l in which dlwings- Figure 1 is a plan of a `plain sheet; Fig. 2, a plan of the same after `it has been initially corrugated;

Fi 3, an enlarged longitudinal section of t e initially corrugated sheet on line III-III, -Iignw, showing aglike section of deep corrugating'.dies;l

lFig. 4, a. transverse section of deep corrugat-ing and partial shaping dies, showing N the sheet therein with lthe flange angles formed and the arch angles partly formed;

Fig. 5, a perspective section of one-half of the lower deep corrugating Vand partial shaping die,. with half a core shaped therein;

Fig. 6, a transverse sectionof dies which may be used for finally shaping both arch angles by a single operation;

Fig. 7, a transverse section of dies which may be used for nally separately shaping thed arch angles by successivel operations; an

Fig 8, a perspective view of the completed core,H with reversely corrugated flanges.- i

Similar numerals refer to similar parts throughout the several iigures of the drawings. y

A plain sheet 9 is initially formed with transverse corrugations by any well known' rolling, pressing, or stamping operation, so as to accumulate or gather the material uniformly throughout the sheet and reduce its length to substantially the length of the finished core. y 1

The corrugations may ordinarily be made without much', if any, stretching of the metal, Ibut. for very deep corrugations, the metal can be stretched to or near its elastic limit; and the character of the corrugations may vary from the middle to the ends of th'e sheet, to compensate for the action of the dies in4 the succeeding steps of the process. y

The shortened sheet 10 may have rounded corrugations 11 of about half the depth and width of the deep corrugations 12 to be nally formed, so as to accumulate the necessary metal required for the deep corrugations; but the particular shape and throughout the length of the sheet, and theA corrugations of the side flanges 15 may conform to the corrugations in the body of the core; but the flange corrugations 17, are

preferably reversed at the angle of the ange to avoid a straining or rupture of the metal at this point, and to increase the strength of the ange angle.

The partiall formed longitudinal arch angles 16 may lie fully formed, both at the same time by a single operation, by complementary dies 18 and 18', as shown in Fig.

' 6; or may be finally formed separately, by

complementary dies 19 and 19', as shown 1n Fig. 7 thereby completing the formation of ghe core With deep corrugations as shown in It is evident that the described method of corrugating and shaping a sheet may be employed for making an arched core without any side flanges; and also that the same method of corrugating a sheet may be employed Without shaping the same to make an arched core.

And it will be understood that the ldeeper contiguous corrugations may be formed from the accumulated metal, substantially without any stretching or compression of the metal or any further contraction of the initially corrugated sheet'.

I claim:

1. The method of making transverselycorrugated sheet-metal cores for 'concrete door construction and the like, which consists in transversely corrugating a sheet to accumulate the metal uniformly throughout its length, then forming a continuous series of deeper corrugations from the accumulated metal and shaping the sheet to form flarges along the sides and an intermediate arc 1.

2. The method of making transverselycorrugated sheet-metal cores' for concrete oor construction and the like, which consists in transversely corrugating a sheet to accumulate the metal uniformly throughout its length, then forming a continuous series of deeper corrugations from the accumu-` lated metal and contemporaneously shaping the sheet to form flanges along the sides and an intermediate arch.

3. The method of making transverselycorrugated sheet-metal cores for concrete floor construction and the like, which consists in transversely corrugating a sheet to accumulate the metal uniformly throughout its length, then forming a continuous series of deeper corrugations from the accumulated metal and shaping the sheet to form reversely corrugated flanges along the sides and an intermediate arch.

4. The method of making transverselylcorrugated sheet-metal cores for concrete floor construction and the like, which consists in transversely corrugating a sheet to accumulate the metal uniformly throughout its length then forming a continuous series of deeper corrugations from the accumulated metal and shaping the sheet to fully form flange angles along the sides' and to partly form intermediate arch angles, and then fully forming the intermediate arch angles.

5. The method of making transversely corrugated sheet-metal cores for concrete floor construction and the like, which consists in transversely corrugating a sheet to accumulate the metal throughout its length, then forming a continuous series of deeper corrugations from the accumulated metal and shaping the sheet to form flanges along the sides and an intermediate arch.

6. vThe method of making transverselycorrugated sheet-metal cores for concrete construction and the like, which consists in transversely corrugatin a sheet to accumulate the metal throug out its length, then forming a continuous series of deeper corrugations from vthe accumulated metal and shaping the sheet to form an arch inter- 1 mediate the sides thereof.

7. The method of making transverselycorrugated sheet metal cores for concrete construction and the like, which consists in transversely corrugating a sheet to accumulate the metal uniformly throughout its length, then forming a continuous series of deeper corrugations from the accumulated metal and shaping the sheet to form an arch intermediate the sides thereof.

8. The method of making transverselycorrugated sheet-metal cores for concretel construction and the like, ,which consists in transversely corrugating a sheet to accumulate the metal uniformly throughout its length, and then forming a continuous series ofdeeper corrugations from the accumulated metal and contemporaneously shaping the sheet to form an arch intermediate the sides thereof.

9. The method of making transverselycorrugated sheet-metal cores for concrete construction and the like, which consists in transversely corrugating a sheet to accumulate the metal uniformly throughout its length, then forming a continuous series of 1 deeper corrugations from the accumulated metal and shaping the sheet to partly form arch angles intermediate the sides thereof, and then fully forming the arch angles.

10. The method lof corrugating a sheet of metal, which consists in corrugating the sheet to accumulate `the metal uniformlyy throughout its extent, and then forming a continuous series of deeper contiguous corrugations from the accumulated metal without an substantial stretching or' compression o the metal or further contraction of the initially corrugated sheet.

11. The method of corrugating a sheet of metal, which consists 2in corrugating the sheet to accumulate the metal through its extent, and then forming a continuous series of deeper contiguous corrugations from the accumulated metal wit-hout any substantial stretching or compression of the metal or i further contraction of the initially corrugated sheet.

12. The method of corrugating a sheet of metal, which consists in corrugating the sheet to accumulate' the metal uniformly throughout its extent, and then reversely corrugating alternate corrugations to form a continuous series of deeper corrugations from the accumulated metal.

13. The method of corrugating a sheet of ymetal, which consists in corrugating the sheet to accumulate the metal throughout its extent, and then reversely corrugating alternateJ corrugations to form a continuous series of deeper corrugations from the accumulated metal.

J ULIUS H. SCHLAFLY.