US1033887A - Sectional reinforced-concrete pole. - Google Patents

Description

J. A. GRIFFIN.

SECTIONAL REINFORCED CONCRETE POLE.

APPLICATION FILED JULY 13, 1911.

1,033,887. Patentd July 30,1912.

Joan A. GRIFFIN, or LOS ANGELES, cnLIr'onnm;

SEGTIONAL REINFORCEIl-CONCRETE POLE.

Application filed July 13, 1911. Serial No. 638,357.

To all whom it may concern:

die it known that I, JOHN A. GRIFFIN, a citizen of the United States, residing at Los Angeles, inthe county of Los Angeles and State of California, have invented new and useful Improvements in Sectional 'Beinforced-Concrete Poles, of which the following is a specification.

This invention relates to certain new and useful improvements in sectional reinforced concrete polesu The essential object of the invention is to provide a structure of this type wherein the pole is made in sections at the factory or other place, and conveyed or transported to the point or points at which the poles are to be erected, and the invention further aims to provide a pole which has strength equivalent to that of a monolithic pole and possesses the advantage over the latter -of safety and economy in transportation, manufacture and erection.

Further and other objects will be later apparent.

'In the drawings: Figure 1 1s a perspective view of one of the sections, Fig. 2 is a top plan view thereof, and Fig. 31s a side elevation showing a pole in the process of erection.

In accordance with the present invention the pole is made of a plurality of sections 1 which are of suitable shape and dimensions. In the present instance I have illustrated a pole of tapering form in which the same is wide at the base and decreases in diametertoward the top. The sections are depicted in the drawings as of annular or cylinderlikev conformation, having hollow interiors. It will be understood however, that any other cross sectional sha e 'of the sections.

' p cured thereon in any approved or suitable may be employed. without departing from the spirit or scope of the invent-ion. As clearly depicted in Fig.1 of the draw,-

ings each section is formed with a plurality of spaced longitudinal perforations 2 which extend through the top and bottom of the section. Each section is molded wit-h a plurality oflongitudinal rods 3 which at their ends extend beyond the top and bottom faces ofthe sections, the rods 3 being located in the spaces between the perforations 2 as ings.

. are of shown in Figs-11 and 2 of the. drawclearly Itwill be observed that the rods 3 be escribed.

less cross sectional area than that of "theerforation's' 2; fora purpose shortly to I pole which repossessedof great strength By referring to Fig. 3 of the drawings it will be seen that a base block or other suitable foundation 4 which may be formed of concrete, is provided, the latter having a seriesof vertical-perforations formed there- 'in', into which the lower ends of the' rods 3, that project from the bottom face of the lowermost section, project. The base 4 may be either molded with the perforations to receive the rods 8 or the latter may be forced into the base while the latter is in a semiplastic state. The lower. face of the lowermost section 1 seats on the top faceof the base 4 and when thev latter sets or hardens,

it will be obvious that'the lowermost sectionwill be held rigidly against any movement. If .the foundation 4 is previously formed with perforations, same are made sufficiently .75

sitioned as above set forth wet grout or concrete is poured into the perforations 2 thereof and before the'l same has or hardened the lower ends of the rods 3' of the adjacent upper section are'then inserted into the perforations 2 and are embedded in the concrete or grout therein. The upper ends 3 of the lowermost section project into the perforations 2 of the said adjacentupper section, and said perforations 2 of the latter are then filled with wet grout or concrete so as to completely fill said perforations and to completely surround the upper ends of the rods 3 of the lowermost sectionwhich extends in said perforations. The above operation is repeated until the pole has attained the desired height, after which a cap Specification of Letters Patent. Patented uly 30, 191 2. I

or other suitable top is either molded or semanner.

It will be seen from the above that the sections can be easily packed and safely transported or shipped, and that a pole may be made of any .desired or required height.

jacent sections and the adjacent sections have. rods which project into the first named section, the sections cooperate to reinforce and strengthen one another, and produce a 2'are indicated in dotted lines, the others- '5' being omitted for sake of clearness Concrete bonds may alsobe placed in the'joints between the ends of the adjacent'sections.

In cases where the poles are used to sup-,

port telephone or telegraph wires, a cross arm or cross arms of wood,-concrete, or othermaterial, can be attached to the poles atv the desired height by bolting, clamping or. by any other suitable means.

What is claimed is: 1. A concrete-pole including a series of sections arranged in superposed order, each sectionhaving spaced longitudinal perforations that extend through the ends of the sections and rods in'the spaces between the perforations whose ends project beyond the ends 'of the section, the rods of one section being received in the perforations of the twoadjacent sections, and the rods of said two adjacent sections being received in the perforations of said first named section.

2. A concrete pole section composed of a hollow body having reinforcing rods there-.

. in which extend beyond the ends thereof, 3 said body having a series of spaced longitu- '-'dinal openings therein, located between said i'odlsand extending through the ends of the A concrete pole consisting of a base block, a vertically arranged section having :itsjlon'ter end seating on said base block, a

, zSBlies of spaced vertical rods embedded in :asaid section and projecting beyond the top and bottom thereof, the lowerends of said rods projecting down into the base block, 40 said section being formed with a series of vertical openings that are disposed in the spaces between said rods, a second vertical section having its lowerend seating on the upper end of the first section, a series of bet-ween sa'id rods thereof, grout filling the.

openings of both of said sections, the lower "ends of the rods of the second section ex.

tending into the openings of the first section and being embedded in said grout therein, a third section that seats on the upper end of the second section, said third sectlon having vertical openings filled with grout into which the rods that extend from the top end of the second section project, and rods embedded in the third section in the spaces between the openings thereof and projecting down into the openings of the second sectionand being embedded in the grout therein.

4. A concrete .pole including a plurality of vertically arranged sections, the lower end of one section seating on the upper end,

of the adjacent lower section, each section being formed with a series of spaced vertical openings that extend through the top and bottom thereof, a series of rods embedded infeach section in the spaces between the openings thereof and pro ecting beyond the top and bottom thereof, and grout in said openings, the projecting ends of the rods of one section extending into the openings of the adjacent section and being embedded in the grout therein, whereby each rod at itsends extends across the'joints formed by the abutting sections. f

In testimonywhereof I have hereunto .set my hand in presence of two subscribing witnesses.

, JOH-NA. GRIFFIN. Witnesses L. P. ABELL, ALBERT E. TmMoNs.

Gopies a! this patent maybe obtained for five cents each, by addressing the Commissioner of Patents, Washington, I). C.

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