US1473268A - Holder for concrete inserts - Google Patents

Description

Nov. 6 1923.

w. E. WHITE HOLDER FOR CONCRETE INSERTS Filed Feb. 16; 1921 W i I n] wlum atented Nov. 6-, 1923.

"r reins.

WILLIAM E. WHITE, OF CHICAGO, ILLINOIS.

HOLDER FOR CONCRETE INSERTS.

Application filed February 16, 1921.

To all whom it may concern.-

Be it known that I, IVILLIAM E. WHITE, a citizen of the United States, and resident of Chicago, in the county of Cook and State of 6 Illinois, have invented certain new and useful Improvements in Holders for Concrete Inserts, of which the following is a specification.

My invention relates to concrete accessories and particularly to a novel insert and means for retaining the same in position prior to the pouring of the concrete.

In many types of buildings it is desired to cast a suitable device in the concrete whereby hangers, conduits, etc., may suspend from a ceiling and so-called inserts are employed for that purpose. These usually comprise a box-like structure having an open slot in the lower end, one portion of the slot being wider than the remaining portion. It is, however, necessary to provide suitable means for securing the insert in the desired position on the form prior tothe pouring of the concrete and to that end it is not unusual to provide means for nailing the box to the wooden forms. This is objectionable, however, for the reason that when the forms are stripped the fastening nails project from the finished concrete, thus requiring an extra operation in clipping oflj the nails. This is an objectionable and more or less expensive practice which is avoided by the structure here proposed.

One of the objects of this invention is to provide a simple resilient strip having a portion adapted to enter the keyhole slot in the bottom of an insert and be thereafter moved to a relatively permanent position, thus firmly holding the insert with no projecting fastening elements. When the forms are stripped the nails will be withdrawn and the holding clip may readily be disengaged; in

fact, it may be removed with the boards of the form. It will be of such economical construction thatit is not intended for reuse.

The invention will be more readily understood by reference to the accompanying drawings, wherein,

Fig. l is a longitudinal sectional view through an insert secured to a form by the device of my invention;

Fig. 2 is a sectional view on the line 22 of Fig. 1;

the length of the box.

Serial No. 445,315.

Fig. 3 is a horizontal sectional view on the line 3-3 of Fig. 1; and

Fig. 4 is a perspective view of the fastening clip.

In the drawings it will be seen that I have illustrated an insert of a form such as shown in my co-pending application Serial No. 145,314, filed of even date herewith, but the device of my invention will operate with equal facility with any of the well known forms of inserts having an open slot in its lower wall, one portion of the slot being wider than another portion. In the insert illustrated there is a box having side walls 10 and end walls 11, the slot 12 being widened at 13 to permit the insertion of a bolt head of standard form. The metal adjacent to the slot 12 provides flanges 14, on which the bolt head will rest when in position. The flanges 15, of less width than the flanges 14, partially surround the enlarged opening 1.3. The flanges 15 are intended to support a keeper 16 which, when in its lowered posi tion, acts to support and give freedom of longitudinal movement 01 a bolt throughout However, the keeper has no function in connection with the retaining device which forms the subject-matter of this invention; and, in fact, it will be, in practice, retained in a fixed elevated posi tion, such as shown. in Figs. 1 and 2, by means of a suitable wire key 17 prior to the time when a bolt is to be inserted in the in sert. At that time the wire key is withdrawn and the keeper permitted to drop until it rests upon the flanges 15.

The retaining device, as best shown in Fig. 4, comprises foot 18, having openings through which nails 19 or other fastening devices be inserted for securing the device in a desired designated position on a form. The retainer also includes a U-shaped portion comprising inclined members 20, the latter, as shown in Fig. 1, being free from attachment to the form. and an intermediate curved portion 21 having side flanges or ears 22 of a width greater than the width of the slot 12. The length of the inclined members 20 is so proportioned as to bring the center of the curved portion 21 below the level of the flanges 14, thus necessitating a slight bending of the overhanging. or free resilient portion of the retainer in order to assemble the insert therewith. The 1 length of the foot portion 18 is also 'proportioned so that it may be received within the enlarged portion 13 of the slot when the resilient portion of the retainer has been suitably repositioned on the flanges 14.

In operation, after the retaining device has been secured in position, an insert 'is caused to co-operate therewith by inserting to a point at which the end, wall 28 of the foot snaps into the position shown inFig. 1'. When in this position the insert cannot be moved Without distorting the retainer. or

cull-ing the nails which secure it .to the form. he insert is, therefore, certain to remain in .the desired position during subsequent operations. When theconcrete has set. and

[the forms are stripped, the retaining device may be distorted and'withdraivn, .or the nails may be pulled out, in which case the retainer may readily be removeduwith the fingers leaving a clean job and avoiding the necessity for cutting any projecting nails.

For all practical purposes the down-turned free end 20 might be eliminated so far as its-function in connection with the retaining element is concerned. It is useful, however, to prevent distortion and damage of the retaining device after ithas been located in position and before an insert hasbeen placed thereover. The device is so constructed thatthe weight of person' -applied to the top of the retainer will not cause any. damage thereto.

Obviously the construction is capable of much modification and I do not wish'to be limited except as indicated in the appended claims.

I: claim; V '1. A retaining device adapted for cooperation with a hollow insert having a key-hole slot, the narrow portion of which slot is provided with inwardly projecting flanges,

said retaining device having a portion for attachment to a form, and a resilient free movement to portion shaped to enter the wide portion of the insert slot and by lateral movement to overlie said flanges. v

8. A retaining device for. hollow inserts having internal flanges, said inserts being provided with an open slot which is enlarsged at one portion ior the insertion of-a bolt head, said insert comprising a strip of resilient sheetmetal bent to provide a foot adapted tobe secured to a form,:and an upstanding portion having curved ears adapted to rest upon the flanges adjacent to the narrow portion of said slot.

l. A'resilient retainer for hollow inserts having internal flanges comprising a strip of metal 701T such size as to adapt it to be completely coveredby an insert, said strip of metal :bent .to provide a flat'portion adapted to :be secured to a form, and a U-shaped projection extending therefrom, the base of the U being provided with lateral extensions adapted to co-operate with the flangeson an insert. V

5. A resilient retainer for hollow inserts having internal flanges comprising a strip of-metal of such size as toadapt itto be completely covered .by an insert-, said strip of metal bent to provide a flat portion adapted to be secured to a form, said flat 1 portion having a resilient projection extending vertically and then horizontally, the horizontal portion having lateral extensions insert.

Signed at Chicago, -Ill., this 4th day of February, 1921. I

WILLIAM E. WHITE.

adapted to slide along the flanges of said

Images