US336828A

US336828A - Insulator

Info

Publication number: US336828A
Authority: US
Publication date: 1886-02-23
Anticipated expiration: 1903-02-23

Description

(No Model.)

0. L. TRAVIS.

INSULATOR.

No. 336,828. Patented Feb. 23, 1886.

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ihvrrnn STATES PATENT Orrrcn.

CHARLES L. TRAVIS, OF MINNEAPOLIS, MINNESOTA.

lNSULATOR.

SPECIFICATION forming part of Letters Patent No. 336,828, dated February 23, 1886.

Application filed November 14, 1885. Serial No. 182,804.

To ctZZ whom it may concern.-

Be it known that 1, CHARLES L. TRAVIS, of Minneapolis, county of Hennepin, and State of Minnesota, have invented a new and useful Improvement in Insulators, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification.

My invention relates to animprovement in means for insulating electric lamps or wires from their supporting and adjusting devices; and it consists in the employment of an insulate-d hook or link adapted to be interposed between the supporting cord, wire, or device and the lamp, as hereinafter fully set forth.

In the accompanying drawings, Figure l represents a perspective view of an electric lamp with my improvement applied, showing also the supporting and adjusting devices; and Figs. 2 and 3 are transverse sectional views illustrating my insulator-hook.

A represents the supporting rod or wire by means of which the lamp is suspended or upheld in the desired position. This supporting wire extends between two uprights or poles of any usual or preferred construction, and a traveling pulley-block, B, is mounted thereon. Said block B is of ordinary form, being composed of two cheek-plates having two grooved revolving pulleys interposed-an upper one, I), which is adapted to travel upon the supportingwire, and a lower one, I), over which the cord that supports the lamp passes.

0 represents the lamp-support, which may be a cord composed either of hemp or flexible wire, as preferred. Said supporting rope or wire is secured at one end to one of the uprights or posts between which the wire or support A is stretched, and, passing through the pulley-block B, over the lower pulley, b, has the lamp secured to it, as hereinafter explained.

D represents the adjusting-cord or flexible wire rope, secured at one end to the pulleyblock B by means of a yoke, d, spanning said block, or in any other suitable manner. From this point of attachment said adjusting-cord 1) extends to the upright or pole opposite that .to which cord 0 is attached, and, passing over a pulley thereon, extends downward to and is adapted to be wound upon a reel 01: Windlass,

(No model.)

1 as described and illustrated in Letters Patent No. 329,510, granted to me November 3, 1885.

All the means above described for supporting and adjusting the lamp are fully set forth in my patent referred to, and operatein the same manner. Therefore it will not be necessary to describe said devices any further herein.

E represents the connectinghook, interposed between the end of the lampsupporting cord and the lamp. It is made in substantially the form shown in Figs. 2 and 3-4. 6., with loops 6 c at either end. Molded about and around one of theseloops, preferably the upper and larger one, is a glass body, F, of the form shown or any other suitable or preferredform, the object being to insulate the lamp-supporting cord from the lamp itself and the currentpassing through thehook Eand its loop 6.

Another and most important objectof my invention is the provision for the safety of the lamp in the event of the breakage of the glass or insulating material surrounding the loop portion of the hook. The supporting-cord C, passing through the perforation f of the insulating body or materiahat the same time passes through the loop 6 of the wire hook E, and should the glass or insulating material F be shattered and fall from said hook E the cord or wire 0 will still encircle and support the loop 6, and thereby the hook E and its pendent lamp. The lamp is attached to the insulated hook E by means of thelower loop, 6, which passes through a staple or hook secured to the upper portion of the lamp.

I have said above that I employed glass to insulate the hook E from the cord or wire (3, and that the glass was molded around the same and the loop 6; but it will be obvious that any known or equivalent material for insulating obtain, and that whether molded or wrapped or otherwise placed thereon. Therefore I do not wish to be limited to the one material or to the precise form of insulator-hook shown.

Having now described my invention, 1 claim as new- 1. The hook E c 6, having one of its loops, 6, insulated by surrounding the same with an insulating material in such manner as to form or leave a hole or perforation,f, for the atpurposes will accomplish the result I desire to IOO tachment 0f the supporting wire or cord, subing-cord, said loop being provided with the stantially as described. insulating-body F, having the perforation or 2. The hookEee' and thesupporting Wire or holef, all substantially as and for the purcord passing through the loop or eye 6 thereof, pose described. 15

" 5 but insulated therefrom by means of glass or In testimony whereof I have hereunto set other insulating substance, molded or formed my hand.

around and inclosing said loop or eye 6, substantially as described. CHARLES TRAVIS 3. The supporting and adjusting devices de- Witnesses: to scribed, in combination with the hook E e e, G. B. GOFFIN,

interposed between the lamp and its support- S. S. LEONARD.