US779659A - Insulator. - Google Patents

Description

PATENTED Jim. 10, 1905.

R M LOCKE.

INSULATOR:

APPLICATION FILED MAY 31, 1904.

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@417 ORNEY UNITED STATES Patented January 10, 1905.

FRED M. LOOKE, OF VICTOR, NEW YORK.

INSULATOR.

SPECIFICATION forming part of Letters Patent No. 779,659, dated January 10, 1905.

Application filed May 31, 1904:. Serial No. 210,500.

To all whom it may concern:

Be it known that I, FRED M. LOGKE, of Victor, in the county of Ontario, in the State of New York, have invented new and useful Improvements in Insulators, of which the following, taken in connection with the accompanying drawings, is a full, clear, and exact description.

This invention relates to improvements in strain-insulators or insulator-links which are adapted to form a part of a guy-Wire or cable under tension to prevent short circuits or leakage of current from an electric conductor which may be in electrical connection with said guy-wire or cable or for regular line construction.

My object, therefore, is to interposc one or more links of insulating material in aguy-wire or other cable which is used as a stay for poles or other supports for electric conductors or other electrical apparatus, such as may be used in wireless telegraphy, so that the leakage or grounding of the electric current from such conductors or apparatus through the guywires may be entirely avoided or at least reduced to a minimum.

Although this invention is particularly applicable for use in connection with guy-wires and similar supports under high tension. I do not wish to limit myself to such a use, as such a combination of elements, as will be hereinafter described, may be employed in many other relations where it is desired to introduce insulation in tensioned wires or cables.

In the drawings, Figure 1 shows a series of insulator-links assembled and ready to be connected or inserted as a part of a guy-wire or other tensioned cable. Fig. 2 is a sectional view taken on line 2 2, Fig. 1. Figs. 3 and 4 are elevations, respectively, of one of the metal sections and the insulator which is adapted to be secured therein.

Similar reference characters indicate corresponding parts in all the views.

In order to demonstrate the practicability of this invention, I have shown a series of links 1, 2, and 3, each of which comprises a cylindrical metal cap l and a flaring skirt 5 of insulating material.

-The metal cap 4 is provided with a threaded socket 6, opening from one end and extending only part way through the cap 4, while the insulator-skirt 5 is formed with an external threaded hub or boss 7, having a centrallythreaded socket 8, as best seen in the lower link 3, and which extends inwardly from one end, but only part way through the insulator.

It is now apparent that the insulator 5 is hollow, one end being cylindrical and is screwed into the socket 6 of the cap I, while the other end flares outwardly for the purpose of deflecting any moisture which may fall thereon and also to prevent the conduction or arcing from one link to another of any current discharge which may escape from any local electrical conductor or apparatus.

The metal caps 4: of the links 2 and 3 are formed with stems or rods 9, which project from the closed ends of the caps and are provided with screw-threaded heads 10, which are screwed into and closely fit within the sockets 8 of the insulator-sections 5; but the cap 4. of the end link 1 is formed with an eye 11, in which is inserted a link or ring 12, forming part of the cable or guy-wire, or said guy-wire or cable may be secured directly in the eye 11 with its other end attached to the pole or other device which it is desired to support.

Secured in the threaded socket 8 of the insulator-section 5 of the lower end link, as 3, is a screw-threaded head 13 of a rod or bar 14L, which extends downwardly through the open end of the socket 8 and is formed with an eye 15, which receives a link or ring 17 of the guywire or cable.

Although I have shown and described three of these links and end connections for the guywire or cable, it is evident that a single link may be employed having the section 5 of insulating materialas, for instance, the lower links 2 and 3 might be dispensed with and the bar 14 secured in the threaded socket of the insulator-section 5 of the link 1this arrangement being entirely within the scope of my invention and shows that the parts are interchangeable that is, the cap 4 of the link 1 may be substituted for the cap 4: of the link 2 or that of the link 3, and I do not limit myself to any number of these links.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. A device for linking two parts together to resist opposing strains, said device comprising a metal cap having an 'eye on one end and a threaded socket in its opposite end, a hub of insulating material inserted in said socket, and a metal rod secured to the hub.

2. A link for the purpose described co nprising two sections secured together end 0 end, one section being formed of insulating material, and a rod projecting from one end of each section.

3. A link for the purpose described comprising a metal cap having a central threaded socket in one end and a rod projecting from its opposite end, a threaded hub of insulating material screwed in the socket and formed with a central opening, and a second rod secured in said opening.

4. A tension-insulator comprising a series of petticoat-sections of insulating material each having a reduced end, metal sections surrounding the reduced ends and uniting the adjacent ends of the insulating-sections.

5. A tension-insulator comprising a series of petticoat-sections of insulating material having their petticoats extending in the same direction, of metal sections inserted in said petticoat-sections and uniting adjacent ends of the insulating-sections.

In witness whereof I have hereunto set my hand this 23d day of May, 1904:.

FRED M. LOCKE.

WVitnesses:

R. C. WA'rsoN, V. M. SMITH.

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