US1218378A - Concrete-insert. - Google Patents

Description

H. DIPPEL CONCRETE INSERT.

APPLICATION HLED FEB. 9. I916.

1,218,378. Patented Mar. 6, 191 7.

HARRY DIrrEL, or PHILADELPHiA', -E'aaersvaa a;

ooivcnnrn-msnn'r.

Specification of Letters Patent.

Application fil ed Febriiary e, 1916; Serial No. 77,118."

To all whom it may] concern Be it known that I, I L RRY DIIPEL, a citizen of the United States, and resident of Philadelphia, county 'of Philadelphia, and

State of Pennsylvania, have invented an' Improvement in Concrete-Inserts, of which the following is a specification. 7

My invention has for its object theprovision of a suitable construction of metal insert for concrete ceilings which shall embody certain improvements over devices of a similar nature heretofore in use, in that it more snugly fits to the moldiform or boards and hence, during the forming of the concrete ceiling, prevents the concrete'working under the same; and in the finished ceiling, has its lower surface in smooth alinement with the concrete surface.

With the above and other objects in View, the nature of which will be more fully understood from the description hereinafter, the invention consists in the novel construction of concrete insert as hereinafter more fully described and defined in the claim.

In the drawings :-Figure 1 is a side elevation of one of my improved inserts before use; Fig. 2 is a plan view of the same; Fig. 3 is'a sectional elevation showing the insert attached to the mold form or board; and Fig. 4 is a sectional elevation of a modification of my invention.

' 2 is a vertical body having a screw-threaded hole 3 open at the bottom. The body is preferably of considerable height compared with its diameter and has its upper end formed integral at 5 with .a plurality of arms 4 having feet 6 at their lower ends. As shown, the arms are ribbed and hence rigid, while their connections with the body are by the ductile portions 5 of relatively thin metal and hence yielding. 7 These arms extend radially outward and downward and terminate in a plane which is not coincident with the plane of the bottom of the body 2,

as will be seen by reference toIF'ig. 1; and this is an important feature ofmy invention. The insert as a whole is made of cast iron and then malleableized so that the parts 5 are ductile and flexible so' that the arms 4". may be bent relatively to the body, for reasons to be later described. This ductile condition of the insert may be confined to the connecting portions 5 if so desired, as these are the only parts to be subjected to bending; and the malleability or ductility of these parts whereby they may beifiexible without danger of breaking is another important feature of my invention.

In employing my invention in practice, the body 2 has its flat end resting upon the mold form or board 7 and with the feet 6 of the arms 4 normally hanging down with a' space as between them and said board; thefeet are then nailed down tightly with nails 9 in so securing themthe arms 4 are bent downwardly about the ductile. portions 5 until the tea 6 restupon the form 7. In so securing the .insert in, position upon the form, the end of the body 2 is pressed or drawn down upon the wooden surface with considerable .force so as to practically indent the wooden surface toinake a tight joint. The arms 4 insure the body being held vertically upward upon the mold or form, as shown. 4

When the concrete is now thrown into th mold, it surrounds the insert and causes it to beembedded with the exception of the feet and body end; and when the concrete has set, the insert will be strongly held in place and all hidden from view except the portion or portions which had tightly pressed upon the form or mold board. It will be understood that in springing down the anns' 4 their feet 6 need not be made to touch the board or form, as the bending at 5 under this condition will be suflicient to insure the tight fit of the body 2 to the form surface desired, In this case the finished ceiling will not expose the feet at all, but only the lower surface of the body, to which the fixture is to be attached. I have shown at 10 a reinforce steel rod which may be embedded in the concrete and pass between the arm 4 and body 2 and hence act as an additional metal support for the insert, should the concrete crack or crumble under heat or other cause.

In the modification shown in Fig. 4, I have all of the insert formed of ductile metal, the bodv 2 being composed of a piece of gas piping internally threaded at 3, and,

having a reduced neck 12 at the top and fitted with a stamped sheet metal spider pro viding the arms 4' corresponding to the arms 4 of the other figures. These arms 4 Patented Mar. 6,1917.

are bent at their top portions 5 adjacent the o ring center part, so that they may bend when applying the insert to the form. I This spider portion, providing the arms 4*, is riveted in place by beating down the flanged.

portion 13. In this way the entire insert may be made of ductile metal and thereby overcome the necessity of employing malleable metal. The same general construction and mode of use are carried out in the modification of Fig. 4: as in the structure of the other figures.

It will now be apparent that Ihave devised a novel and useful construction which embodies the features of advantage enumerated as desirable, and while I have in the present instance shown and described the preferred embodiment thereof which has been found in practice to give satisfactory and reliable results, it is to be understood that I do not restrict myself to the details, as the same are susceptible of modification in various particulars Without departing from the spirit or scope of the invention.

Having now described my invention, what I claim as new and desire to secure by Letters Patent, is

'As an article of manufacture, an insert for concrete ceilings, etc, which consists of a central elongated body provided with three or more radiating arms extending from one end of said body and projecting obliquely outward away from the body and having their ends normally terminating in a plane slightly back of the plane of the other end of the body, said arms each terminating in a foot and said feet widely separated and arranged at a considerable distance'from the body and movable relatively thereto, and in which further the union of the arms with the body is formed by flexible portions capable of bending without breaking, whereby the feet may be independently adjusted and sprung down when applying the insert to the false work and cause the body to press tightly upon such false work.

- In testimony of which invention 1 hereunto set my hand.

RUTH M. FnANon, Geo. YV. A. KAPPEL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, I). G. r

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