US338115A - Metallic pole for use as a telegraph-pole - Google Patents

Description

(No Model.) l A S. H. TERRY.

METALLIC POLE FOR USB AS A TELEGRAPH POLE.

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UNITED STATES PATENT OFFICE.

SAMUEL H. TERRY, OF BROOKLYN, NEW YORK.

METALLIC POLE FOR USE AS A TELEGRAPH-POLE.

SPECIFICATION forming part of Letters Patent No. 338,115. dated March 16,1886.

Application led August 7, 1885. Serial No. 173,851.

To aZu/wm it may concern:

Be it known that I, SAMUEL H. TERRY, a citizen of the United States, residing at Brooklyn, in the county of Kings and State of New York, have invented new and useful Improvements in Metallic Poles for Use as Telegraph- Poles and for other Purposes, of which the following is a specification.

My invention has for its object to produce an improved metallic polefor use as a telegraph-pole, a fence-post, a gas-light post, a

mast, or a post for other structures where a strong and durable pole or post is required, and my invention is also applicable for making beams, girders, and braces in frames or trusses or other structures. s

The novel and peculiar construction of my pole is pointed out in the following speciiication and illustrated in Vthe accompanying drawings, in which- Figure l represents a perspective view of a telegraph-pole constructed according to my invention. Fig. 2 is a vertical section of the same, the plane of section being through the slots a b. Fig. 3 is a horizontal section in the plane a: zo, Fig. 2, on a larger scale than the previous ligure, and before the parts aredrawn up tight. Fig. 4 is a similar section after the parts have been drawn up tight. Fig. 5 is a longitudinal section in a plane at right angles to the plane of sectional Fig. 2, the part represented including the joint where two poles or sections are connected with each other. Fig. 6 is a cross-section taken in the liney y of Fig. 5.

Similar letters indicate corresponding parts.

My improved pole is constructed either in a single piece or section, or of a series of sections, the number of sections being dependent upon the height and strength desired.

In the example represented by the drawings, which show a telegraph-pole made according to myinvention, I have shown a pole composed of two sections, A B, of tapering or conical form, which I make by bending or rolling sheet metal around a core, die, or former, leaving between the edges'slots c b, as shown in the drawings. The upper or small end of the lower section, A, fits the large end of the second section, B, and upon this last-named section is placed a ring, C, of a corresponding taper, which is provided with a tooth, c, that (No model.)

ing-ring Gis forced down, the tooth c, as it l traverses the slot a, forces the sides of the slot apart, while the body of the ring C compresses the lower end of the section B and brings the edges of its slot b snugly up to the tooth c, and in this manner the two sections arermly locked together.

In order to prevent the sections or divisions A B from sliding on each other after the pole is put together, I provide a circular groove, o, in each in the parts where they overlap each other, and arrange them so that they will engage each other in the manner shown in the drawings. The slots a-b allow the divisions or sections of which the pole may be constructed to contract or expand, as the case may be, when the sections Iare slid upon each other, so that the grooved ends will readily adjust themselves to each other. The toothed clamping-ring is then slid down over the joint, and it should surround the pole over the circular grooves o.

In order to stiffen the pole, I bend its edges inwardly along the slots a b, as illustrated in Figs. 5 and 6.

` Vhen the pole is made of divisions or sections A B, the bent edges s of the outer section, B, are removed for a certain distance, so as to allow it to slip over the other section. This provision is illustrated in Fig. 5, where the bent edges s s are seen to terminate above the end of section A of the pole. end of the section A is cut to form a spiral edge or earth-auger,r d, which acts as a borer,

so as to open its own hole.

On the section A, at a suitable height above its lower end, is the clamping-ring D, which is provided with a tooth, c, that engages in the slot a of the pole. The ring D is also, if desired, provided with arms e e, by means of which said section can be manipulated for the purpose of boring the hole in the ground. The tooth c, besides its office of stiffening the post, acts also to preventthe ring D from turning round when the post is turned by means of the arms e.

On the section B are firmly secured one or The bottom IOO clamping-rings, of which as many are em ployed at various points as may be desired in the construction of alpole or post, support,by means of their teeth, the edges of the slots a 1o and b, in which theyare fitted, and sustain or help to sustain the pressure made on the sides of the pole or post by the rings when the rings are forced down on the pole, thereby materially aiding to stiffen the pole and to make its parts rigid, and prevent it or its sections from becoming twisted or bent or its sides from collapsing. 'The rings C D E support the sides ot' the post and prevent them from being bent in an outward direction, and` tend to press the edges of the slots against the sides of the teeth. Thus the rings and their teeth act together in stiffening and strengthening the pole.

\Vhen the pole'is not used for telegraph purposes, the cross-arms f j' are omitted, and the spiral or earth-auger form for the bottom of the pole is only applicable where the pole is used in places where it can be set by turning it down to its place. The arms e are of course only temporarily applied when wanted.

The sections of the pole may be of any suitable length, and in cases where a pole or post is to be of moderate length it may be composed of one piece or section instead of several, as many toothed rings being placed on it ,as are required to stiften and strengthen it for the uses required of it. The rings C D E also give a foothold in climbing up on the pole, and for this purpose additional rings may be fastened on the pole, and these rings may, if desired,be provided with suitable projections, so as to produce a better foothold than the edges of the rings themselves will produce.

The upper end of the pole is closed by a cap, F, which is provided withl a tooth, c, which projects from its interior into the slot b, as in the case of the rings C, while into the lowest section is driven a wrought-iron or other plug, G, to such a depth that when said section is in the ground the plug G is partly beneath and partly above the ground, as shown in Fig. 2, and by means of the plug the danger that the pole will break just above the ground is avoided. The plug also prevents water from ruiming down in the interior of the pole, so that ground beneath and around the bottom end of the pole cannot be softened by water running into the pole.

The upper end of the plug G is chamfered off, so that the water which may run down 'in the interior of the pole is carried out through the slot a. This provision is of course useful wherever and for whatsoever purpose the post is used, whether in thegronnd or elsewhere.

It' the tapering form is not employed in making a pole according to my invention, then the longitudinal slots a and b should be made tapering, becoming narrower toward its lower end, and the teeth e of the rings should be of a corresponding taper form.

I do not wish to restrict the application of my invention to any particular use or article, as it can be applied in the construction of masts for vessels, flag-staffs, fence-posts, and other articles Where selfsustaining bodies are required to be maintainedin a perpendicular position, and also in the construction of beams and rafters and girders and yards of vessels which are used in horizontal positions, and in the construction of trussesA and other structures.

Corrugated sheet metal may be used in the construction of my invention, so as to obtain poles or beams of great strength, and in some cases the sections composing the same may be made of cast-iron.

If desired, the sect-ions may-be made with a square or polygonal cross-section, and in such case the clamping-rings C, and so forth, and the cap F, will be formed of corresponding shape.

What I claim as new, and desire to secure by Letters Patent, isf 1. The combination of the longitudinallyslotted sections A B, one section having its end inserted within the end of the other section, and a ring, C, for clamping the adjoining ends of the sections together, substantially as shown and described.

2. The combination, with the slotted section or structure, such as A or B, of the clamping ring C, having a tooth which ts the slots of the sections, substantially as yand for the purpose shown and described.

3. The combination, with the lowest section, A, and its spiral cutting-edge, of a ring provided with 4arms for operating the seetion in boring a hole, substantially Aas described.

4. The combination, with the slotted section or post A, of a chamfered plug, G, arranged in it near its lower end, substantially as and for the purpose described.

5. The circular grooves O in the overlapping parts of the divisions or sections A B of the pole, in combination with the clampingring C, substantially as shown and described.

6. The metallic pole herein described, provided with a longitudinal slot having its edges s s bent inwardly, in. combination with the toothed clamping-ring, substantially as described and shown.

In testimony whereof` I have hereunto set my hand and seal in the presence oi' two subscribing witnesses.

SAMUEL H. TERRY. [L. s]

Witnesses:

E. F. KAsrENHUBi-m, D. VAN SAN'rvooRD.

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