US1375328A - Collapsible concrete-form - Google Patents

Description

J. C. SHEELEY.

COLLAPSIBLE CONCRETE FORM.-

APPLICATION FILED APR. 7..1920.

v Patented Apr. 19, 1921.

UNITED STATES PATENT JAMES CHARLES SHEELEY, 0F PASADENA, CALIFORNIA.

coLLArsrBLn CONCRETE-roam.

Specification of Letters Patent.

Patented Apr. 1e, 1921.

Application filedv April 7, 1920. SerialNo. 372,035.

concrete constructions, and has for its ob-Y ject to provide simple but eiiicientkmeans'for vcollapsing the form so that the latter-may be readily removed after the concrete has been poured.

VOther'objects Vof the invention will' be readily understood from theh following description of the accompanying drawings in which;

Figure 1 is atop plan view of a form constructed in accordance with my invention for a double, spaced concrete wall.

Fig. 2 is an enlarged top plan viewof one of the units of the form.

Fig. 3 is a longitudinal section on the line "3 3 of Figpa Fig. 4 is a` transverse 4 4 of Fig. 2.

Fig. 5 is a side elevation of one of the units of the form having a top extension thereon which is employed` when building'a wall having a sloping upper edge.

The improved concrete form is illustrated as employed in a double, spaced wall concrete construction, the forms for the outer sides of the said walls being, preferably, the usual built up woodenwalls 1 and 2, and the units of my` improved *formi providing section on the line VtheY forms for the inner wall of said double,

spaced concrete walls. Y, p i

My improved form, preferably, comprises a series of units 3 positioned in the space 4 to be left between the concrete walls 5 and 6. Each of these units comprises spaced side walls consisting of overlapping wall mem*- bers 7 and 8. These wall members maybe of any suitable dimension and overlap transversely of the length of the side Walls of the unit so as to be moved longitudinally relative to one another toadjust the length of the unit. Y

The means employed for adjusting the lap of the wall members of a side wall of a unit may comprise the followingmechanism;

A'n actuating rod 9 extends transversely of the side wall of the unit along the inner surface of the same, and this actuating rod is connected to the overlapping wall members 7 and 8, as by series of operating rods 10 and 11 pivotally connected to the rod 9 as shown at 12 and 13 and projecting outwardly at opposite sides of the rod 9 and pivotally connected at their outer ends to v they respective overlapping wall members as shown at 14 and 15. By this arrangement longitudinal movement of the actuating rod 9 in VVopposite directions will force the over lapping wall members 7 and 8 away from and toward one another lto adjustthe lap ofsaid wall members and thereby longitudinally expand and contract the side walls of the units of the concrete form.

Means are provided for guiding the overi lapping wall members 7 and 8 relative to one another during longitudinal adjustment of the same, such means, preferably, comprising guide rods 16 extending longitudinally of the side walls of the forms. These guide rods may be supported in brackets 17 formed in suitable strips -18 extending transversely of wall members 7 and 8. The stripsp17 form strengthening members for the walls 7 and 8, and in order to form a stronger and more rigid construction the pivotal connnections 14 and 15 are, preferably, provided upon these strengthening strips 18.' The strips 18 are, preferably, `suitably kriveted to the wall members 7 and 8 as 'shown at 19, and the guide rods 16 may be similarly riveted to one of the wall members, say the wall member 8,a`s shown at 20, and are slidable through the bearing brackets 17 lrela- *y ltive to the other wall member.

The means employed for adjusting the i distance between the side walls of a unit of the form may comprise a mechanism similar to thatj previously described. As an instance of this arrangement an actuating rod 20 vextending transversely of the side walls of theV form is positioned between the ends of the side -walls of a unit of the form, this actuating rod having the operating rods 21 and 22 projecting from opposite sides thereof and pivotally connected to the actuating rod as shown'at 23 and 24, the outer'ends ofsaid operating rods having pivotal connection with the opposite side walls yof the unit ofthe form. In the preferred construction theseV outer ends of the operating rods are pivotally connected to corner pieces 25 formed of angle iron and vextending transversely of the side walls of the form at the ends of the units thereof, the ends Vof the wall members 7 and 8 being, preferably, bent around the outside of said corner pieces and suitably secured thereto. The pivotal connections between the operating rods 2l and 22 and these corner pieces are shown at 26and27.V Y

By the construction as thus described it will be seen that a unit of the concrete form may be adjusted in length through the ae; tuating rods `9 on the respectiveside zwalls thereof, and the distance between the side walls may `also be adjusted through the actuating rods 20, and a series of such units, when placedV end to end, will form the inner walls of aform fora double, spaced concrete wall. The concrete having been poured into ftheform thus provided, and having set, the units`3 maybereadily removedby collapsthe form are provided with recesses 29, such ing the same when they will be readily removable from between the walls" 5 and 6. The units of the Aform are collapsed by moving` actuating rods 9 and 20 in a `direction to contract the length of the sidewalls of the unit and to reducethe distancebetween .said side walls.` i"

It is usual in double wall concrete construction to provide tie rods between the two walls, and in order to providefor the proper positioning of such tie rods, repre sented at 28, the following construction is, preferably, providedz` y i l `The ends `ofthe side walls of the unit-s of ,recesses beingiof suitable sizeI and shape so that when two of the units are placed end to endl adjacent recesses of the two units will form apertures through which the tie rods 28 will extend andbe supportedtherein. These recesses are,` preferably, formed lby iecessing boththe corner pieces 25 at the ends of tliejside walls ofthe unitsof the form, and the inwardly turned `ends of the wallfmembers 7 and `8 whichlarereceived over said cornerpieces. i

j In forminga construction wherein a sloping roof is to be employed it is desirable that the forms forthe side walls of such fa construction may permit of buildingside walls having their upper ends sloping at fany desired angle.` For this purpose my improved form may be provided with a top extension arranged to form a sloping upper edge upon the walls. `This construction is `shovvnin Fig. 5, the top extension being shown as employed with a single unit form, although it will be obvious that such an extension be alsoapplied to a multiple unit form.

The extension comprises a wall 3(1.ov'erlapping the upperedgeiof the I:side wall of the form and having a sloping upper edge 31. The lapping edge 32 of this extension is provided with meansfor adjustably mounting the extension upon the side wall, such means, preferably, comprising straps 33 adapted to be removably securedl at Aone end to the side vvall` by bolts 34 and having their `opposite ,endsadjustably secured relative to the extensiones byy bolts 35 upon the extension slidable within slots 36 formed in side 'walls7 and toggle means for adjusting :the distance'between said side walls,

" 2. In collapsible formforl concrete construction, side walls comprising overlapping Y wall members, toggle means for` adjusting the lap 0f said wall members toilongitudin`ally"eXpandand contract said sidewalls, i

cornery pieces atftheou'ter ends of said'wall members, Land" toggle 'Y means -coi'inectiiig'z the opposite corner pieces of the opposite -side walls for adjusting the distance between 'saidsid'e wallsu* i i 5 3. In `rif-collapsible form for concrete cor"istruction,j a side wall comprising` wall members overlapping transversely of the `length offsaid side wall, an actuating memberextending transversely of said side walhand i operating connections betweenu said actuating member and said overlapping wall membe'rs arrangediso-that longitudinal movement of said actuating member will adjust thellap of-saidwall members to longitiidi# nally expand and; contract said side wall.

4a ln a collapsible `form for concrete con struction, side `walls comprisii'ig i overlapping ,ivall members,v means for adjusting the lap of said wall; .meinbersyto longitudinally eX- pand and contra-ct` saidsidewalls;land means fori adjusting the', distance between said side `wa'lls': s'aidadjiistingrmeans comprising actuating members extending` transversely off said side walls,said actuating members i having operating connections therewith,

wlierebyisaid actuating members are adapted to respectively adjust the length of said side walls. and to adjust ,the distance between actuating members.

theflatter by longitudinal movement of said y `5. In agcollapsibleformsfor concretelconstructiom if a j sidey wall coniprisingroverlapping wall members, and means for adjusting the `lapy of said wall members` toy t longitudinally expand' .and contract saidpsidewall,

the endsef'sedeide Wellbeing recessed,- te

form apertures adapted to receive tie rods top extension adjustably mounted on said when a plurality of said side Walls are side Wall to provide an upper end for said 10 placed end to end. side Wall and having an angularly disposed 6. In a collapsible form for concrete eonupper edge. Y struction, a side Wall comprising overlap- In testimony whereof I have signed my ping Wall members, means for adjusting the name to this speoieation. lap of said Wall members to longitudinally expand and contract said side Wall, and a JAMES CHARLES SHEELEY.

Images