US1788180A - Bar clip - Google Patents

Description

Jan. 6, 1931. w. E. WHITE 1,783,130

AR CLIP Filed Dec. 1o. 1927 Patented Jan. 6, 17,931

l UNITE S'TTES WILLIAM n. WHITE, or*fc'rIIoAero, ILLINOIS BARY CLIP Application inea December 1o, 1927. *Serial No. 239,078.

My invention relates to concrete reinforcing devices and is a modification of or a variation in the construction disclosed and claimed in my copending application, Se-

5 rial No. 239,077, filed of even date herewith.

As stated in my said copending application, an object of the bar holding clip disclosed in this and said copending application is to provide la positive bar holding means that shall prevent possible escape ot' the bar from the clip and yet permit certain limited longitudinal adjustment as required,

these advantages to besecured in a construction in which the bar engaging means shall be self acting.

In the construction here disclosed, an additional improvement is provided. Many engineers object seriously to the use of metallic chairs that rest on the forms, for the reason that when the forms are removed, the surfaces of the chairs that originally rested on the forms are then exposed to the weather. The resultant oxidation renders the surface unsightly and oliers a possibility of admisvsion ot moisture-to the reinforcing bars imbedded within the concrete. Consequently in some jurisdictions the use of metal chairs is prohibited, concrete or other non-rusting chairs being required.

An object ot the improvement here disclosed is to provide chairs vcomposed of cementitious material and to incorporate bar holding clips therein, the clips being of such construction that the labor of installing the bars is reduced, and the engagement between the bars and the chairs made certain.

I am aware that concrete blocks having a loop of wire therein have been used, the ends of the wire being adapted to be twisted together over the bar. An objection to this construction aside from the increased manual labor required, is that the strain following the twisting of the wires tends to split or break the chair composed ot cementitious material, due to the fact that the strain is usually exerted outwardly in two directions. By a simple expedient adopted for use in this connection, I have avoided this diiliculty and eliminate any possibility of breakage of the block due to the strain of engagement and holding of the bar. :The result is accomplished by Vlooping` the wire and crossing the wires at their point of emergence from the bloclf- VThus the spreading tendency of the free arms is exerted on a section of material conned within the center of the blocl; 11nd is exerted inwardly instead ofoutward- `The invention will be more readily understood by reference to thel accompanying drawing, in whichf Figi l is a sectional'view"through'a pair of concrete blocks and a metallic spacer used 'for joiningthe same;

Figj is a plan View thereof;

Fig. '3 is .a transverse sectional view through one of the chairs, and

Fig. lis a perspective view of a single chair andclip such as may be employed without the combination with a spacer. l

llnthe construction of Figs. l to 8, Ihave illustrated/chairs l0, composed of cementitious material,y such as concrete, the chairs being joined by afmetallic spacer ll of arcuate torni jin cross section. This or a similar shape is employed in order to insure rigidity f gether by means of the anchorl l2 or otherwise. lThe tongue 12 is `formed by punching out anopening 13 in the top oit the spacer' through which the bar clip is inserted.

The clip is in the form of a length ot wire bent to provide a loop 14 that is imbedded in the chair. The arms-of the loop are crossed at i substantially the point 01' emergence from the cemetitious material, and the free ends project diagonally outward and upward and thence diagonally upward and inward, terminating in oppositely and inwardly prog jecting hooks 14. It will be noted that the outwardly divergent portions l5 of the arms lie snugly against the top surface of the spacer ll, thus constituting another anchor or holding means between the spacer and the block. i l

When a bar is to be placed in position, itis located directly above the meeting points 0f the ends and forced downwardly into the position shown at the right hand end of Fig.

l bedded Within the chair, and the arms of the loop are crossed at a point above the chair.v

l in which position the hooks overlie the bar and securely holdvit against removal vertically; it may, however, be adjusted longitudinally as required.

In the construction of Fig.v 4 the block 16 is the same and the general Construction of the bar clip is thesame. The loop 1-7'is im- The upper portions of the arms are similar to those already described1 terminating in hooks 18 for the described purpose.

Itwvill be noted that in both of the forms illustrated, the force exerted vby the bar tending to spread the arms acts merely Vto compress a body of the eementitiou's vmaterial Within the-center thereof, tberebeing no tendency to split the chair. Y

Other modiiications and changes in the form and arrangement Will undoubtedly suggest themselves to those skilled in the art, and do not Wish to be limited except as indicated in the appended claims.

Iclaim: 'f'

l. In combination, a body of cementitious Ymaterial and a bar clip eomposed of Wirea portion of Which-clipV is imbedded in the chair, the tWo portions of the clip being crossed at substantially their point of emergence from thev oementitious material, the free portions ot the Wire extending upwardly and terminating in oppositely and inwardly Y projecting hooks.

2. In Combination, a chair of cementitious material and a bar ol-ip composed of alength Y of Wire doubled on itself to form a loop, the

loop being imbedded inthe cha-ir, the `arms of the loop being crossed atv substantially the point oi emergence from the material composing the chair, the free ends o the Wire projecting upwardlyv and terminating in opsignature.

-positely and inwardly projecting hooks.

In testimony whereof I have affixed my WILLIAM E. WHITE.

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