US1004226A - Insert for concrete construction. - Google Patents

Description

W. J. AHERN INSERT FOR CONCRETE CONSTRUCTION.

APPLICATION FILED APR.18,1911.

Patented Sent. 26. 1911.

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UNITED STATES PATENT OFFICE. I

WILLIAM J. AHERN, OF BOSTON, MASSACHUSETTS, ASSIGNOLR OF ONE-HALF TO ALFRED M. PITTS, 0F BOSTON, MASSACHUSETTS.

INSERT FOR CONCRETE CONSTRUCTION.

Specification of Letters Patent.

Application filed April 18, 1911.

To all whom it may concern:

Be it known that I, IVILLIAM J. Annex, a citizen of the United States, residing at Boston, in the county of Suffolk and State of Massachusetts, have invented new and useful Improvements in Inserts for (ioncrete Construction, of which the following is a specification. My invention'relates to inserts for use in Connection with concrete construction, and its objects are to provide a suitable support for fixtures capable of maintaining a con-- siderable weight, to utilize the reinforcing bar as a direct support for the attaching de vices, and to simplify and render more effective the construction of the several parts.

My invention primarily consists in forming an insert, the walls of which are of thin metallic material, and through which extends a supporting metallic bar whose ends are firmly embedded in the concrete surrounding the insert; a hanger engaging with said bar, providing a means of attachment for the parts which require to be supported.

' My invention further consists, in various improvements and novel arrangei'nents of parts more particularly hereinafter pointed out and claimed.

Attention is hereby directed to the drawing in which similar numerals of designation refer to similar parts throughout the several views.

Figure 1. is a plan view of my improved insert looking at the same from below. Fig. 2 is a vertical section of Fig. 1 on line 2-2. Fig. 3 is a vertical section on line 3-3 of Fig. 1. Fig. 4 is a view of a section of a concrete Wall, showing on a small scale the insert in position for use.

Referring to the drawing: the insert i is here shown in the form of an inverted re ceptacle with thin walls. Preferably the said receptacle is in the form of an oval shaped box, as here shown, and is composed of sheet iron, zinc or any other suitable material. In many cases material other than metal may be used for the purpose, since no portion of the wall of said insert is relied upon for support, and even concrete could be used with good results. Through the wall of said insert near the deeper portions thereof, extends the supporting rod 5, the ends of which are long enough to insure being embedde. in the concrete to a sufficient Patented Sept. 26, 1911.

Serial No. 621,757.

extent to provide the required support, and to turn back and form the loops 6, 6. The said rod is composed of steel or iron or other suitable material, and is of sufficient thickness to sustain any strain to which it may be subjected. Ill,tl1OSG cases where the object to be supported is likely to be of: unusual weight, I insert through the loops 6, 6, reinforcing bars 757, which are of iron or steel or the like and when embedded in the concrete distribute the weight over a wide area.

Upon the rod I), I loosely suspend the metallic supporting hanger 8, by means of the opening 9 extending through the upper part thereof. At the base of said hanger is the threaded opening 10, for the purpose of securing the same by means of bolts to braclc .ets, hangers, stringers or other parts which are to be removably and yet firmlyattached to the surface of the ceiling or wall of the building. For the sake of economy of construction, I prefer to make the said hanger tapering at the top thereof as shown in the drawing. At the broad sides of my insert and at the base thereof, I prefer to use the ears, ll, which are for the purpose of providing a means of temporary attachment to the form used for molding the concrete structure or building where my invention is to be put in use.

It has long been known that concrete of itself is not suil iciently hard or tough to firmly secure a nut or head of a bolt, and it is, moreover, difficult to determine the exactdesircd position of a bolt or of a set of bolts; hence it is desirable to provide an insert and means for supporting and permitting lateral adjustment of saidholts. I am aware of the fact that it is old to provide an insert consisting of a reinforced slot in which the heads of bolts may be inserted and secured, but in such cases dependence is placed upon the wall of the insert itself as the direct means of support and not upon reinforcing bars. I believe that I am the first to utilize the recess of the insert merely as a means for introducing directly therein a portion of the reinforcing bar and for securing thereto the bolt used as aforesaid for attaching fixtures.

In the prior devices used as inserts, it has been essentiak that the walls of. the same be made of considerable thickness and rigidity in order that they could not spread apart and permit the hhad of the bolt or, nut to escape. For this purpose metal castings have been used, and great dependence has been placed upon reinforcing bars to sup port the same, since without some means for securing the insert other than the surrounding concrete there was grave danger that the insert would be pulled out when subjected to the weight of the fixtures secured thereto.

By the use of my invention, the builder is enabled to dispense with the heavy and expensive castings heretofore used for inserts, and to use a light structure of metal or other suitable material designed merely to provide a recess within the ceiling or wall of the concrete v the strain of supporting the fixture being directed, Where it ought to be directed, solely to the reinforcing bar, which distributes the load over a large area.

What I claim and desire to secure by Letters Patent is,

1. In an insert for concrete construction, an open box, a supporting bar extending through said box and furnishing within said box a support for the attachment of building fixtures.

2. In an insert for concrete construction, an open box, with a supporting bar extcnding through said box, and means for adjustably securing any part of the bar within said box to building fixtures.

3. In an insert for concrete construction, an elongated open box, a supporting bar extending lengthwise through said box, and means for adjustably securing any part of said bar within said box to building fixtures.

t. In an insert for concrete construction, an open box, a supporting bar extending through said box, and means for detachably aflixing any part of said bar within said box to building fixtures.

5. In an insert for concrete construction, an open box, a supporting bar extending through said box, combined with a device connected with said bar and having detachable means for attachment to building fixtures.

6. In an insert for concrete construction, a box, a supporting bar extending through said box, a hanger suspended from said bar within said box and moving freely on said bar and means for attaching said hanger to building fixtures.

7. In an insert for concrete construction, a shallow box, a supporting bar extending through said box, and furnishing Within said box a support for building fixtures, the ends of said bar extending outside the box and providing anchoring means.

8. In an insert for concrete construction, a shallow box, with thin resilient walls, a supporting bar extending through said box, the ends of said bar outside of said box be,- ing bent into loops and providing anchoring means, combined with a hanger suspended from said bar within said box and moving freely upon said bar and means for securing said hanger to building fixtures.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses, this 15th day of April, 1911.

WILLIAM J. AHERN. Witnesses:

T. HERBERT BILonEAU, HUBERT M. CHASE.

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