US1163480A - Mold for building poured concrete structures. - Google Patents

Description

L. c. STEWART I M. A. QumN. MOLD FOR BUILDING POURED CONCRETE STRUCTURES.

APPLICATION FILED MAKYZI, 1914.

Patented Dec. 7, 1915.

COLUMNA PLANQUE/PM C0., WASHINGTON, D. C.

Patented Dec. 7, 1915.

2 SHEETS-SHEET 2.

L. C. STEWART & M. A. QUINN.

APPLICATION FILED MAY 2l, i914.

IZOLUMBIA PLANUGRAPH co.. WASHINGTON. D. C.

MOLD TCR BUTLDTNC PouRED CONCRETE STRUCTURES.

rinirnn srafrns rnrnnr ernten.

L'YMAN C. STEWART ANI) MARSHALL A. QUNN, 0F ROANGKE, VIRGINIA.

-IVIOLD FOILBUIIJDING PGUREDCONCRE'E STRUCTURES.

License.

`Specification of Letters Patent.

Patented Deo. 7,1915.

Application filed I/Zay 21, 1914. Serial No. 840,098.

To all whom t may concern.'

Be it known that we, LYMAN C. STEWART and MARSHALL A.. Quinn citizens of the United States, residing at Roanoke, in the county of Roanoke andState of Virginia, have invented certain new and useful Improvements in Molds for Building `Poured Concrete Structures, of whichthe following is a specification. 1

Qur invention relates to animprovernent in molds for building poured concrete structures, and thepresent invention is a collapsible core.

.l-leretofore in inventions of this general type, difficulty has been encountered in withdrawing thefcore after `the concrete has set. This difliculty has been largely due to the fact that the core was notcollapsible, both widthwise and lengthwise. A

Our present invention provides for both, and lirst of all the collapse widthwisefor as to thickness, which k.quickly removes the sides of the core from themolded walls and permits collapse lengthwise to followf, it being particularly advantageouswhere a core is employed, as in all cases in which the area of the lower edge `either as to width and length, and sometimes both, may be greater than that of the upper edge; and with this in view, our invention consists in telescoping sides with spacing means therebetween on the toggle-joint principle, which when adjusted in one position holds the sides rigidly apart, and when in another position moves them toward each other in a collapse of the core, along with Vmeans for varying the width at top and bottom, and other novel features of construction and combinations of parts, which will be hereinafter de'- scribed and vpointed out in the claims.

In the accompanying drawings: Figure 1 is a view illustrating a portion of a wall, with some of the outer part broken away'to show the internal construction and two or vmore cores in position therein, Fig. 2 is a transverse section through the core, showing it in position in the wall, Fig. 3 is a horizontal section through the core, Fig. l is a view in side elevation with parts broken out, Figs. 5 and 6 are enlarged details, and

Fig. 7 is a slightly modified view of the sliding connection at the edges of the core.

The core is made up of four main parts bent from sheet-metal, and constituting two sides, and each side is composed of two members land 2 slidably connected together at their upper and lower edges in any approved form, as for instance by means of the inturned flanges 3, 3, on the sectionsl, 1;,

and overlapping and embracing flanges 4, 4,

on section 2, which receive andare slidably connected with the flanges 3, 3. These constitute the sliding, telescoping^joints,1where by the lengthening and shortening of the core isr made both possible "and convenient. p

'As a slight modification/of thisform of joint, the construction illustrated in Fig. 7 might be adopted, in which the edges are concentrically crimped together as at 3 and 4l.

The ends of the core are 'formed by the overlapping, inturned edges 5, 5, and 6, 6, and these ends preferably incline at an angle from one .edge'of the mold to the other, although not necessarily, and `when ythey do thus incline, it obviously makes oneedge of the core always -`longer than the other. As stated, this is preferred, for ,thereason that 1tg1vesthe required shape to the bond 7 whichisto be formed'between the two sides `is located and housediwithi'nthe sheet-metal core, and it consists in a plurality of toggle- Joints 8, 8. These may be variously constructed, and one member of each toggle is connected with its corresponding member at Y the other edge of the core, preferably through the medium of an integral rod 10, so that the toggle at both edges are simultaneously operated by adjusting either one, and the center toggle 11 may be operated through a connecting-rod l2 pivotally connected at one end with the toggle and at the other end with the arm 13 projecting from one of the rods 10.

It is desirable to adjustably connect the toggle-members together, for the reason that in many, and perhaps most instances in building a wall, it is desirable to make the lower edge of the core wider than the upper edge. As a simple means of providing for this, and accomplishing it quickly, one member of each toggle may have a slot, such as 14, adapted to receive a bolt or pin 15 on the other member, which latter is caused to take a position in either of the extreme ends 16 or 17 of the slots, whereby to widen or narrow the edge as the case may be.

The rods 10 form braces to prevent the rlO crushing of the sides, which are preferably is alternately inverted, so'that the concrete bond 7 would iirstbe V-shaped and then diamond-shaped, and these diamond-shaped f bonds are staggered.V That, however, is entirely within the discretion of the builder, Y: but Vthe essential feature is the provision whereby the coremay firstbe collapsed as to width, so that the overlapping, telescoping part and the widened lower edge (where Vthis plan is followed) can be brought t0-y gether to clear kthe formation, following which the length'fof the coreis reduced to clear thebonds. To facilitate placing and holding the coreagainst lateral displacement', lugs 18, i8, are provided, one at each of the eight corners of the core. j y

More or less slight changes might be made in the form and arrangement ofthe several parts Vdescribed without departing from the spirit andscope of our invention, and hence we do not wish to be vlimited to theeXact construction herein set forth, but Y Y Vefclaimz- Y. Y

1. A Vcollapsible core comprising flexible]V sides, rods pivotally mounted along the'inside thereof, links on the ends of the rods, the links of each rod having engagement with the links of the adjacent rod for connecting the sides together, said'links adapted to be actuated for expanding the core, and maintaining the sides in said position Aand forcausing va collapse of the core by drawing the sides toward each other.

.2.-A collapsible core for molding, comprising flexiblertelescopic sides and ends, rods pivotally mounted along the inside thereof, links on the ends of the rods, the links of 'each rod having engagement with the links ofthe adjacent rod for connecting thefsides together, said links adapted to .be actuated for expanding the corey and maintaining the sides insaid position and for causinga collapse of the sideswidthwise, thereby permitting they collapsing o., the core lengthwise. y y 3. A collapsible core ,for molding Ycomprisingeitensible `sides andV ends, rods pivoted` vertically on the inner faces of the sides, toggle joints connecting the rods across from opposite sides, means for lengthening and shortening said toggle joints, and a connecting rod'eXtending from one vertical rod to another whereby to operate the toggle rjoints at dierent points, within the collapsible core, simultaneously.

In testimony whereof we affixfour'signa tures, in thefpresence of two witnesses. f Y LYMAN C. STEX/TAI'I.-k LMARSHALL QUINN.- l -Witnesses: i y

y LEONARD VA. HUBER,

EDGAR IFI.V MGGRAw.

4Copies of this patent may he obtained for five cents each, by addressing the commissigner of raam.

y Washington, D. C.

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