US1718693A - Fabricated pole - Google Patents

Description

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UNITED STATES i 1,713,693 PATENT OFFICE.

JULIUS KAHN, OF YOUNGSTOWN, OHIO, ASSIGNOR TO TRUSCON STEEL COMPANY, OF YOUNGSTOWN, OHIO, A CORPORATION OF MICHIGAN.

. FABRICATED POLE.

Application led April 6, 1927. Serial No. 181,466.

This invention relates to fabricated met.

al poles, and more particularly to a pole which ta ers from'its base towards its top.

One o the objects of the invention 1s to 5 provide a fabricated pole whose parts are effectively arranged and secured together to obtain maximum strength and rigidity, thereby providing a pole which is strong, durable, comparatively light, and also economical to manufacture.

A further object of the invention is to provide a novel base construction which may be filled with earth or the like to provide a wei ht or anchor at the bottom of the 18 pole therey to firmly hold it in position in the ground. l

With the above and other objects in view' which will more readily appear as the nature of the invention is better understood, the

to same consists in the novel construction, combination, and arrangement of parts hereinafter more fully described, illustrated and claimed.

A preferred and practical embodiment of the invention is shown in the accompany- :ing drawings in which igure 1 is a detail view illustrating the appheation of the invention, the pole being broken at the' center in view of its comparatively great height in proportion to its Figure 2 is an enlarged detail side elevation of the base.

Fi ure 3 is a horizontal cross section on the lme 3--3 of Figure 1.

Figure 4 is a horizontal cross section taken on the line 44 of Figure 1. y

Figures 5 and 6 are horizontal cross sectional views re ectively' taken on the lines 4o 5-5 and 6-6 o Figure 1.

l Similar vreference characters designate Vcorresponding parts throughout the several figures of the drawings. y

In the embodiment of the invention shown 4,5 the body A of the pole consists of a plurality of angle-iron members 1 of suitable length arranged with their included angles facing each other so that the outer corners 2 thereof form the corners of the completed 5o pole while the meeting side edges thereof at the top may be placed in contact and welded together at one or more points as indicated at 3. Thus, the top portion of the pole forms a hollow rectan le and for a portion of its lengthis of uni orm width but at the point of the last weld 3, the angle members l begin to diverge uniformly and progressively toward the base of the pole designated generally as B thereby to provide a tapered pole structure.l The tapering body portion A formed by the spaced angle members is also provided with a plurality of transverse 'battens which are preferably metal strips welded to adjacent Hanges of the angle inembers 1, and spaced closer to each other near the ground level and further apart near the top of the pole.

At a point below the ground level designated by the dotted line w-fc in Figure 1, the pole is formed with a special base which is constructed not only with a view to economy of metal but to also provide a firm and e ective anchorage for the pole in the earth. This base consists of a plurality of upper plates 5 which are bowed outwardly at their medial portions and attached at their side edges to theflanges of the angle members. Four of .these plates are used to provide a hollow open box portion near the top of the base, and by reason of their bowed formation .the individual members resist inward bending movement due to the pressure of the earth about the bottom of the pole. In other words, the purpose of providing the outwardly bowed plates 5 is to prevent them from readily crushing in from the weight outside or when a load is applied to the top -of the pole.

.The bottom ends of the angle members 1 are connected by the plates 6 6 whose side edges are welded to one flange of adjacent angle members, and are also connected by the flanged plates 7 which are not only welded to the outside of the angle members 1--1 as clearly shown in'Figure 5, but are also provided with the inwardly turned bot- 9 tom flanges 8 which cover and protect the bottom ends of the angle members. These flanges 8 not only serve as a retainer for earth within the relatively box-like inclosure provided by the base structure, but also assist in preventing 'penetration of the relatively sharp bottom ends of the angle members into the earth which might ycause the pole to sink under its own weight if it should be placed in earth which is likely to become soft or soggy under rainy or 4similar conditions.

The u per series of plates 5 and the lower series o plates 6 and 7 provide in effect l great-'width as compared with the angle vmembers 1, and said angle members between said series of plates, are connected' at all sides with the crossing brace members 9 and 10 whichA take the side thrusts or strains imparted to the base and assist in preventing the rupture of the welds which hold the an le members and plates 5, 6 and 7 toget er.

When the pole is laced in the earth and the base B is also lled wit-h earth or the like, a stron and firm anchorage for the pole is provi ed.

Without further description it 1s thought that the features and advantages of the invention will'be readily apparent to the skilled inthe art, and it will of course be understood that changes in the form, proportion and minor details of construction may be resorted to, without departing from thev spirit of the invention and scope of the ap ended claims 1. A fabricated metal pole including angle members forming the body of the pole, and

an anchoring base construction for the bottom of the pole, said base construction comprising upper and lower relatively deep pleate members, said ulpper plate members` ing bowed outward y to resist inward pressure of the earth, and said lower plate members including relatively deep body ortions and certain of said plate members laving inwardly projecting flanges extending beneath the lower ends of the angle members to resist sinking movement of the pole, and braces connecting the angle members bctween said plates.

2. In a fabricated metal pole, angle lnembers forming the corners of the pole, an anchoring base -includin an up r and a lower series of s aced ates, eaci plate of the upper series ieing bowed outwardly at its medial portion to resist inward ressure of the earth, and the oppositely isposed plates of the lower series having inturned flanges at the bottom edges to resist sinking movement of the pole, and crossing brace strips connecting the angle members' between the plates.

In testimony whereof I hereunto aix my signature.

J ULIUS KAHN.

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