US1680935A

US1680935A - Reenforcement for concrete columns

Info

Publication number: US1680935A
Application number: US326988A
Authority: US
Inventors: Arthur A Clement
Original assignee: AMERICAN WIRE FENCE Co
Current assignee: AMERICAN WIRE FENCE Co
Priority date: 1919-09-27
Filing date: 1919-09-27
Publication date: 1928-08-14
Anticipated expiration: 1945-08-14

Description

Aug. 14, 1928. 1,680,935

A. A. CLEMENT REENFORCEMENT FOR CONCRETE COLUMNS Original Filed Sept 2'7, 1919 Patented Aug. 14, 1928.

UNITED STATES PATENT terr er.

ARTHUR A. CLEMENT, OF CHICAGO, ILLINOIS, ASSIGNOR TO AMERICAN WIRE FENCE COMPANY, OF CHICAGQILLINOIS, A CORPORATION.

REENFORCEMENT FlOR CONCRETE COLUMNS.

Application filed September 27, 1919, Serial No. 326,988. Renewed July 5, 1927.

The invention relates to metal reenforcements for concrete columns and seeks to provide an improved construction which can be economically constructed .of ordinary wire and in which the different parts are held in proper spaced relation to thereby effect the uniform reenforcement of all portions of the column. The invention consists in the features of construction hereinafter set forth, illustrated in the preferred form in the accompanying drawings and more particularly pointed out in the appended claims.

In the drawings, Figure 1 is a view in elevation of my improved reenforcement. Figure 2 is a plan view thereof. Figure 3 is an elevation showing the reenforcement collapsed for shipment. Figure 4 is a plan view illustrating a slight modification.

The improved reenforcement comprises ahelically coiled or spiral Wire, the loops or coils a of which are preferably slightly inclined, are arranged closely adjacent one another and are slightly smaller in diameter than the column for which the reenforcement is designed.

The coils or loops are held at substantially uniform distances apart by a series of longitudinally extending spacers. Each spacer comprises two round wires b and 0 which extend, respectively, within and outside of the spiral and engage the separate coils a thereof. One at least of the wires of each spacer is crimped or bent at intervals to form curved, substantially U-shaped portions (Z which partially surround the separate coils or loops a. Preferably, as shown, the wires Z) within the coils of the spiral are relatively heavier than the wires 0 which extend outside the coils and the lighter wires 0 are bent to form the curved portions or seats (1. Between each pair of adjacent coils of the spiral the wires of each spacer are welded together, as indicated at 6. This welding can be readily effected electrically or by other suitable means. The welding operation flattens the wires 0, as indicated in the drawings, so that ample contact is provided between the round wires of each spacer to securely unite the same. i

The improved construction can be economically formed of inexpensive round wire and the coils of the reenforcing spiral will be held by the crimped and welded portions of the spacers-at uniform distances apart during the construction of the column. The relatively heavy inner wires 6 of the spacers afford the requisite stiffness, while the lighter outer wires 0 can be readily crimped to form the seats d. At the same time, the construction is such that, when the spacers are arranged as shown on opposite sides of the spiral, the latter can be collapsed for ship ment, as indicated in Fig; 3, since the coils of the spiral can turn in the seats at. Where more than two spacers are employed, they are preferably arranged on opposite sides of the coil with the spacers on each side closely adjacent, as indicated in Fig. 4, so that they will permit the collapsing of the reenforcement for shipment.

Preferably, as shown, the ends of the wires 0 are provided with bent portions or books f which engage the two end loops or coils of the spiral and hold them close together or in contact at one point so that the end coils are substantially horizontal or at right angles to the axis of the spiral when the reenforcement is set up as shown in Fig. 1. But these hooks do not interfere with the pivotal movement of the coils in collapsing the spiral as shown in Fig. 2. Preferably, also, the extreme ends of the wire forming the spiral are bent inwardly, as indicated at g, to prevent the disengagement thereof from the ends of the spacers.

Obviously, changes may be made in the details set forth without departure from the essentials of the invention as defined in the claims.

I claim as my invention 1. A reenforcement for concrete columns, comprising a wire spiral and a series of Ion gitudinal spacers each comprising two wires extending respectively within and outside of the coils of the spiral and connected together between the coils, at least one of the wires of each spacer having seats for the coils and hooks engaging the'end coils, certain of said hooks engaging the two end coils to hold the ends of the spiral substantially at right angles to its axis.

relatively heavy and the other wire being light and having seats and end hooks pivotally engaging the spiral coils, and flattened portions between each pair of adjacent coils integrally united to the other heavy spacer wire, substantially as described.

ARTHUR A. CLEMENT.