US1137108A

US1137108A - Column-footing.

Info

Publication number: US1137108A
Application number: US65171011A
Authority: US
Inventors: William P Anderson
Original assignee: FERRO CONCRETE CONSTRUCTION Co
Current assignee: FERRO CONCRETE CONSTRUCTION Co
Priority date: 1911-09-28
Filing date: 1911-09-28
Publication date: 1915-04-27
Anticipated expiration: 1932-04-27

Description

WILLIAM I. ANDERSON, OF CINCINNATI, OI-IIO, ASSIG-NOR TO THE FERRO CONCRETE CONSTRUCTION COMPANY, OF CINCINNATI, 01-110, A CORPORATION OF OHIO.

COLU1VINFOOTING.

Application filed September 28, 1911.

To all whom it may concern Be it known that I, WILLIAM P. ANDER- SON, a citizen of the United States of America, and resident of Cincinnati, county of Hamilton, and State of Ohio, have invented certain new and useful Improvements in Column-Footings, of which the fo1- lowing is a specification.

The object of my invention is a columnfooting, in which the reinforcement in each part is in direct proportion to the strain to which that part is subjected, and may be assembled readily. This object is attained by the means described in the specification, and illustrated in the accompanying drawings, in which:

Figure 1 is a plan view, showing the arrangement of the reinforcing members of a columnfooting, embodying my invention. Fig. 2 is a central sectional view of the column-footing and the lower end of the column.

The reinforcing members of the columnfooting embodying my invention consist of a series of concentric rings, A, A A A to which may be added a series of radial rods B. Ring A is of less diameter than the superposed column D, and ring A is of somewhat greater diameter than said column. R-ods B may have at their inner ends hooks b. I-Iooks I) embrace rings A, A. Concrete embeds the reinforcing members, and extends from the periphery e of the footing in a tapering or conical form to the column D.

The greatest strains upon the columnfooting are those occurring directly beneath Specification of Letters Patent.

Patented Apr. 27, 1915.

Serial No. 651,710.

the periphery of the column. By the construction of the rings and rods, the reinforcing members are doubled beneath this part of the column, by reason of the hooks b in the rods. The strainsupon the columnfooting decrease toward its periphery.

It will be noted that with my construction, since the hooked rods radiate or diverge from the center outward, that the amount of reinforcement diminishes in direct proportion to the distance of the point from the center of the column, and since the strain in the column-footing diminishes in proportion to the distance of any part from the center of the column, that the reinforcement diminishes in like manner.

What I claim is A column footing comprising reinforcing members consisting of three or more concentric rings located adjacent to the bottom of the footing, the inner ring of which is of a diameter smaller than that of the column and the next ring of which is of a diameter greater than that of the column, radiating rods hooked at their ends, the hooked portions embracing the two or more inner rings with the lower legs of the hooked portions crossing beneath the outer rings, the hook of each rod lying in the vertical plane of the rod and concrete surrounding and embedding the rings and the rods.

WILLIAM P. ANDERSON. Witnesses:

WALTER F. MURRAY, W. THORNTON Boonnr.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). G,