US1445255A - Form-supporting device - Google Patents

Description

Feb. 13, 1923.

W. E. WHITE FORM SUPPORTING DEVICE Filed Dec. 25, 192i Patented F eb. 13, 1923 rATN'r OFFICE.

WILLIAM E. WHITE, OF CHICAGO, ILLINOIS.

FORM-SUPPORTING DEVICE.

- Application filed December 23, 1921.. Serial No. 524,445. i

To all whomz't mdg concern:

a citizen of theUnited 'States, and resident of Chicago, in the county of 'Cook and State .of Ill inois,'have invented certain new and useful Improvements in a Form-Supporting Device, of which'the following is a specification.

My invention relates to devices for supporting concrete forms and particularly to a much simplified construction having certain functions and advantages Which'Will be set out hereinafter.

One of the objects of my invention is, as stated, to materially simplify the construction and operation of devices of this char acter. One of the specific objects is to provide a construction in which substantially all the parts thereof may be removed with the pans for re-use before the supports for the concrete work are removed. To this end I provide a plate or stirrup adapted to rest upon the top of the supporting joist and coninect hangers thereto in such manner that thehangers may readily be disengaged. To the'hangers I connect brackets of a desired.

form so arranged that they may be readily disengaged from the hangers to permit removal of the pans. Thereafter the hangers may be removed and employed in subsequent 'operations on the same building, nothing being left as a part of the original assembly except the plate on the top of the joist.

Anothenadvantage in the construction described is that the bracketsla'nd hangers may be. assembled in the desired relation before the hangers are connected to the plates on the top of the joist. This simplifies the matter-of, assembling and preparing for the location of the form ans.

The invention will e more readily understood by reference to the accompanying drawing, wherein,

Fig. 1 is a sectional view through a slab and pair of beams showing the manner of use of the device of my invention;

Fig. 2 is a side elevation partly in section, on the line 2--2'0f Fig. 1; and,

Fig. 8 is a perspective view of the plate or stirrup and one of the hangers which I employ.

In the drawings it will be seen that the forms are intended for use in molding a slab 10, and beams 11 of concrete. To this end I employ sheet metal pans or forms 12, which serve to define the beams and the bottom of the slab, the lower surface of the Be it known that I, VILLIAM E. WHITE,

beams being determined by a plank 13. The plank is supported by joist 1 1.

The form pans rest upon and are securely held in position by means of brackets 15, which as shown, may consist of two pieces of metal suitably shaped and joined by rivets 16, the inner terminal portions of thesections of metal being spaced apart and shaped to form apertured ears 17, adapted to straddle a channel-shaped hanger 18, the flanges of which are provided with registering spaced apart apertures 19. A nail or pin 20, is employed for disengageably' colinec'ting the brackets to the hangers in a desired vertical position. The position of the hangers relative to the plank 13,.determines the relative height of the pans and consequently the depth of the beams 11.

The hangers 18 are, at their upper'ends, provided with a straighttransverse pin 21, and a bent transverse pin 22, both of which are firmly fixed in position. The-pin 21 is adapted to engage the hooks 23, formed in the downturned terminal portion 2-1 of a plate or stirrup 25. The hooks at each side are spaced apart by cutting out the metal of the down-turned portion 24 to permit the hangers to be accommodated therein. The bent pin 22 is so positioned that the. hangers cannot rotate or swing on theirpins 21, and

suitably set, the nails 20 are removed in a convenient manner and the brackets dropped, The pans may then be. disconnected and thereafter the hangers may be disengaged from the stirrup by raising the same to a point permitting the disengagement of the pin and ,hook. The pans,

, brackets andhangers may then be re-used.

This efiects a considerable saving in the quantity of material required for a single job and simplifies materially the matter of assembling and operation of the device as a whole. Obviously thoseskilled in the art may effect a reversal of the constructions shown and this, together with other modifications I consider to be withinythe binationof a'strap, hangers adapted to be pivoted to the strap and to be readily disengaged therefrofnj'saidhangers being pro-e vided with spaced vertical apertures, and

brackets adapted to engage said'hangers by means of said apertures and to support forms. 4 f I 3. In a form supporting device, the combination of a plate providlng pivot recesses,

hangers having parts adapted to engage said recesses, and brackets adapted to engage said han ers at different points in the length'of the hangers and to support form pans.

4. .In a device of the class described, the combination of a plate adapted to rest on the top of a supporting joist and provided with hooks on opposite sides thereof, han ers having cooperating hook elements at t eir upper ends for disengageable connection with said p-late, brackets, and means on the brackets and hangers for facilitating their disengageable cooperation. I

5. In a device of the class described, the combination of a plate adapted to rest upon the top: of a joist and provided'with hooks at either side thereof, hangers provided with pins at their. upper ends for engagement tween at difi'erent hangers. 6. In a form supporting device, the comwith said hooks, form supporting brackets, and means on the brackets andhangers for efi'ecting disengage-able connection there-bepoints in the length of the bination of a plate adapted to rest upon a support joist, said'plate being provided with sides the terminal portions of which are bent into hook shape, hangers having portio s at their upper ends adaptedto engage sai hooks and transversely apertured at difi'erentpoints in their length, and brackets for supporting forms, said brackets being adapt-' 'ed to be held in different vertical positions v by cooperation with hangers. 1 v i 7. In a form sup-porting device, the com-ov bination of a plate, hangers having pivotal the apertures in said engagement with said plate, brackets adapted to be adjustable and disengageably connected to said hangers, said brackets being provided with upstanding lugs adapted to position the form pans held thereby.

I 8. In a device ofthe class described, the combination ofa plate having open-top reeesses at either side thereof, hangers having projections adapted to enter said recesses, brackets removably connected to said hangers, and means in the connection between the hangers and plate for preventing the hang ers from swinging after being connected to the plate.

. 5'0 Signed at. Chicago, Illinois, this 17th dayof December, 1921.

WILLIAM E. WHITE.

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