US756026A - Insulator. - Google Patents

Description

No. 756,026. I PATENTED MAR. 29, 1904.

- w. s. KINSLBY & s. s. BELL;

INSUL'ATOR.

APPLICATION FILED AUG. 10, 1903.

- no menu UNITED STATES Patented March 29, 1904.

PATENT OFFICE.

WILLIAM S. KINSLEY AND STEWART S. BELL, OF READING,

MASSACHUSETTS.

INSULATOR.

SPECIFICATION forming part of Letters Patent No. 756,026, dated March 29, 1904.

Application filed August 10, 1903.

To all whom it may concern:

Be it known that we, WILLIAM S. KINSLEY and STEWART S. BELL, of Reading, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Insulators, of which the following is a specification.

This invention relates to insulators for supporting electric wires; and it has especial reference to insulators which are attached to trees.

The invention has for its object to provide an insulator in which the part or member attached to the tree or other support shall be free from liability to be electrically connected with the wire or conductor supported by the insulator by water accumulating on the surfaces of the insulator.

The invention consists in the improvements which we will now proceed to describe and claim. 1

Of the accompanying drawings, forming part of this specification, Figure 1 represents a side elevation of an insulator embodying our invention. Fig. 2 represents a section on line 2 2 of Fig. 1. Fig '3 represents a section on line 3 3 of Fig. 2. Figs. 1 and 5 represent modifications hereinafter referred to.

The same reference characters indicate the same parts in all the figures.

In the drawings, (4 represents an electric conductor supported by our improved insulator. v

6 represents a supporting or attaching device, which as shown in Figs. 1, 2, and 300mprises a screw threaded part or shank Z2, adapted to be engaged with a support, such as a tree-trunk, arms or branches diverging from the shank and constituting a forked part, the outer ends of said arms being provided with eyes 6 b and a part 0, extending between the said arms and formed as a stud or bolt d and d represent sections .of insulating material collectively forming an insulatingblock having an aperture 0Z through which the conductor a passes, said aperture being formed by semicircular recesses in the meeting faces of the sections d d. The upper section d is provided with an orifice at, which ex- Serial No. 168,871. (No model.)

tends substantially parallel with the orifice d and receives the stud or bolt 0.

6 represents a binder, which is preferably composed of a length of stout wire bent to encircle the sections d 0?, the ends of the wire being twisted together, as shown in Figs. 1 and 2.

It will be seen that the above-described construction insures an effective insulation of the conductor a from the attaching member or bracket 6, the form and arrangement of the parts being such that there is no liability of the formation of a short circuit through water on the surfaces of the parts of the insulator. Y V

The sections d d, which may be porcelain or any othersuitable insulating material, are

preferably grooved, as indicated at d d, to engage the binding-wire 6, so that the wire prevents any end slip or movement of the insulating material. The sections d and (8 may also be provided with molded tenons or dowels 0Z entering molded sockets formed for their reception, as indicated in Fig. 2.

We do not limit ourselves to the employment of the supporting device 6 formed as shown in Figs. 1, 2, and 3. In Fig. 4 we show a modification in which the insulatorsupport is a looped wire w formed into a shank portion adapted for engagement with an adjacent support, such as a tree-limb, a stud or bolt portion which passes through the secondary orifice 0Z and a forked portion con necting the shank and stud portions. In-Fig. 5 We show the insulator provided with two secondary orifices d and two looped wires w for attachment to two supports, such as two limbs of a tree.

We claim- 1. An insulator comprising a sectional insulating-body having a main opening formed between the sections, and a secondary opening formed in one of the sections, a supporting device having an inner part extending through the secondary opening, and a forked outer part having a shank adapted for connection with an adjacent support, and a binder encircling the body and located out of contact with the said forked part.

circling the body and located between and out of contact with the arms of the attaching member.

In testimony whereof we have affixed our I5 signatures in presence of two witnesses.

XVILLIAM S. .KINSLEY. STENART S. BELL.

Witnesses:

(J. F. BROWN, JAMES F. TwoMBLY.

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