US1094496A - Concrete-form hanger. - Google Patents

Description

G. S. TUITB.

CONCRETE FORM HANGER.

APPLICATION FILED JAN.13, 1910.

Patented A111128, 1914.

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G. S. TUITE.

CONCRETE FORM HANGER.

APPLICATION FILED JAN. 13, 1910. i

Patented A111128, 1914.

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GEORGE S. TUITE, OF LOS ANGELES, CALIFORNIA.

CONCRETE-FORM HANGER. 4

Locaties.

This invention relates to a device used for the purpose Aof securing centering to beams and the like where they are embedded in concrete, and its object is to produce a device which can be applied to the centering when the same is on the floor, and which will secure the centering to the beams without posts.

Another object of the device is to produce a hanger which will be easily secured to the under side of any beam having a flange by simply turning the hanger with a hammer or other implement of like character.

Another object of the invent-ion is to produce a device which will alford means to secure reinforcing rods under the flange of the beam for holding the mass of concrete thereto.

Other objects of the invention will appear as the description proceeds.

In the drawings, in which the Same numeral of reference is applied to the same portion throughout the several views. Figure 1 is an end View of a beam embedded in a concrete mass showing the hanger and the centering in place. Fig. 2 is a plan view of a portion of the same beam Without the concrete showing the posit-ion of the hanger with respect to the beam. Fig. 3 shows the hanger as itlooks when at right angles with the beam and ready to be turned so that its hooks will pass over the bott-om S is an end view of a beam showing a hanger used for supporting stringers. Fig. 9 is an end view of a beam showing the hanger illustrated in Fig. 8 with the stlrrup turned Specification of Letters Patent.

Patented Apr. 28, 1914.

Application led January 13, 1910. Serial No. 537,889.

at a right angle to the previous ligure. Fig. 10 1s a plan View of a hanger having hooks for the suspension of reinforcing rods. Fig. l1 is a side elevation of a beam and said hanger. F1g., 12 is an end view of a beam and one of said hangers, and Fig.' 13 is a plan view of a portion of a form and a beam.

illustrating the use of hangers having only one hook.

The hanger comprises a plate l having a slot 2 at the center thereof, the ends of said plate being bent upwardly as shown at 3 so they will hook over the bottom flange 4 of a beam 5, when the plate is turned as shown in Fig. 2. Secured to the plate l is a centering boX 6, a bolt 7 being passed through a slot near the center of the.

plate 1. It will be noted that itisnecessary to make the greatest distance between the pointsl of the hooks a small amount greater than the width of the beam in order that. the hooks may be placed, thereon, since the hooks must be secured to the centering boX and the latter must be placed in position after the beams have been fabricated and riveted in place. It will be noted that the hooks 'are placed at such an angle with respect to the axial plane of the body of the hanger that they will give the greatest possible bearing when it is turned at a considerable angle therewith, as shown in Fig. 2.

The manner of operatingthe hanger is vas follows: The center boX is made in the usual manner, a number of the hangers being bolted to the bottom thereof, all of the hangers being in substantially the same line f and turned to the position, with respect to the lengt-h of the beam, shown in Fig. 4.-. rlhe box is then raised into proximity to the beam and a workman takes a hammer or other implement. and drives the hangers around so their hooks pass over the bottom flange in the manner shown in Figs. l and 2, and sincethe hangers are bolted tightly to the centering they will not readily turn back and come off the flange, but hold the centering iirmly in place. Since almost all beams are more or less crooked when'they have been placed in a building they require the hooks to be more or less adjustable, said adjustment being accomplished by having the hole through which the securing bolt passes slotted, thus when the hook is turned aro-und so its hooks pass over the flange of .the beam they can also move longitudinally a small amount so that both hooks will be aol 'lov

tight against the edges of the ange. When it becomes necessary to remove the concrete centering all that it is necessary do is to unscrew the bolt 7 when the entire center box may be removed, the hanger being left embedded in the concrete mass.

It is sometimes desired to support the centering very close to the bottom of the beam in which event the hanger may be made with 'the body portion quite fiat, asV

shown in Fig. 5, a small dependingloop 8 being formed at the center4 to provide the necessary space for the bolt nut. This hanger may be removed from the beam by simply breaking a small amount of the concrete awayfrom the beam, or the bolt may be unscrewed from the nut as in .the other case.

When it is desired to use the hangers for supporting stringers for false work, as in making concrete vslabs for sidewalks, etc., 1t may be found convenient to provide the hanger with a stirrup 18 as shown in Figs. 8 and 9, said stirrups being supported from the hook hanger in such a manner as to rotate to permit the use of a supporting Stringer either in line with the beam, as shown in Fig. 8, or transversely of the beams, as shown in Fig. 9. The stirrups may be made larger than the stringers and they may be used as often as may be necessary to support the desired false work.

It is often desirable-to insert reinforcing rods in the concrete mass below the bottom flange of the beam, in which event a modified form of the hanger may be used. This form is shown in Figs. 10, 11 and 12. The body of the hanger is precisely the same as the first form, and in fact with that form of hanger rods may beinserted as shown at 12, but since it is more desirable to support the said rods at a point close to the outer corner of the mass of concrete, depending hooks 10 are formed in the plate, and in the depending flange 10 there are av series of holesv through which the rods 11 maybe inserted, if desired.

Since the hanger may be used with open false work at times it becomes necessag to provide some means for preventing it om being accidentally displaced from the bottom ange of the beam. This means comprises the washer 15 having the prongs 16 and wedges 17, the prongs adapted to be driven into the wood of the false work to fix the position of the washer with respect to said false work. The hanger is then placed on the top of the washer and when it is driven around into the desired position the body of the hanger will pass over the top of the wedges and cannot be turned back, although, of course, the bolt may be removed in the manner previously indicated. It will also be clear that it is possible to make the hanger with a hook at one end only as indicated in Fig. 13, the hooks being bolted to the top of the bottom of the centering 20 -at 22, while the hooks are forced around over the bottom flange of the beam as shown in said gure. In this case the centering affords the means whereby the entire series are held together and act as a single rigid body. Y

In Figs. 14 and 15 there is shown a slightly modified form of the invention, the centering being secured to the beams by means of a pair of hooked rods 24, said rods having a portion 25 which extends at right angles withthe length of the rod and which is held in contact with the bottom of the centering by means of a bolt the same as is used in the other forms of the invention, the end 2G of the rod being turned up to prevent the `rod from being Worked out from under the washer 27. The difference between this form of the invention and the first form lies in the fact that the movement of the rod to pass over the bottom iange of the beam is entirely in a vertical plane and not in a horizontal plane as in the former cases.

It is to be noted that in each form of the invention the nut left embedded in the concrete may be used for the purpose of hanging pipes, shafting and other objects from it as may be desired, although, of course,- with the form shown in Fig. 13 the entire load would be on the concrete and not on the metal of which the hooks 21 are made, since the hook is passed over the beam at one end only.

Having thus described my invention what I claim as new and desire to secure by Letters Patent of the United. States is as follows:

. 1. A hanger for holding concrete centering comprising a plate having an opening therein near the center thereof and having a pair of hooks at the ends thereof, a bolt projecting from said centering and extending through said opening to serve as a pivot upon which the plate may be swung, the hooksbeing turned at an acute angle to the axial plane of the plate, one in one direction and the other in` the other direction, substantially as described.

' 2. A hanger for holding concrete centering, comprising a centering base, plates pivotally secured to said base and centrally thereof and each provided with a terminal hook turned at an acute-angle to the axial plane of the plate. y

3. A support for holding concrete centering to'flanged beams, comprising a centering boX, pivot bolts secured to and projecting from the central portion thereof, metal hangers spaced apart and having central apertures through which said pivot bolts project, said hangersl having'terminal hooks turned inwardly at an acute angle to the axial plane of the plate, and reinforcing members carried by said hangers, whereby the entire centering support may be assembled before being positioned over the beam and then locked to the beam by swinging the hangers upon their pivots into locked engagement with the beam.

4. A support for holding concrete centering comprising a plate provided at either end with an inwardly directed hook for grasping the opposite sides of a anged beam respectively, and means for centrally pivoting said support to the centering to permit said hooks to swing into locking engagement with the beam, said vpivotal means 1s being adapted to lock said posts aga-inst subsequent angular movement.

In testimony whereof I have hereunto set my hand this 28th day of June A. D. 1909, in the presence of the two subscribed 20 witnesses.

GEORGE S. TUITE.

Witnesses:

.WEYMOUTH CRoWELL, J. F. CHURCH.

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