US1249359A - Section-insulator. - Google Patents

Description

G. B. ELY.

SECTION INSULATOR.

APPLICATION nuan MAR.13. 1916.

Patented]. Dec. 11, 1917,

INVENTOR ATTORNEY enonen 'B. ELY,OT 'ELK1-I.RT,INDIANA, Assie'noa r0 w-esrmeirousn ELEc'rRI'c -& MANUFACTURING COMPANY, A oonroaaer'ro v or PENNSYLVANIA.

SECTIONJNSULA'IOR.

masses.

Specification of LetteTSratent.

Patented net. 11, ieit.

Application iiled March 13, 19 16. 'Seria1No. 83,750.

To all to boot "it may concern.

Be it known that I, GEORGE E. ELY, a citizen of the United States, and a resident of Elkhart, in the county of Elkhartand State of Indiana, have invented anew anduseful Improvement in Section Insulators,of which the following is a specification.

My invention relates to overhead construction for electric trolley lines and it has spe cial relation to section insulators for use in connection with'trolley lines that are operated under high voltages and in connection with high-speed sliding or pantograph trolle s.

The object of my invention is to improve the construction of section insulators of the above indicated character and, in particular, to provide such an insulator in which the insulating member may be readily replaced without changing any of the connections to the adjacent trolley sections or glider attachments.

In the accompanyingdrawing, Figure l is a side elevational view of a section insulator constructed in accordance with, my invention, and Fig. 2 is a plan view of the apparatus shown in Fig. 1.

A sectioninsulator of the type to which my present invention relates consists essentially of a strip ofwood or other insulating material provided with connecting "means at its opposite ends for attachment to adjacent trolley conductor sections. It is also usual to provide arms or gliders that extend obliquely outward from opposite ides of the insulator, these gliders being designed to afford a continuous conducting path for the pantograph as it traverse the insulator. It has heretofore been customary to attach such gliders, and also the ends of the adjacent trolley conductor sections, directly to castings secured to the ends of the insulating strip. When an insulator constructed in this manner is in need of repairs or replacement, considerable time and labor are required to disconnect the insulator from the trolley sections and to make the necessary attachments to restore the insulator to its operative condition.

According to my present invention, the trolley conductors and gliders are not directly attached to the insulating member, but are secured to connecting members that releasably engage the end castings of the i s lar er by m ans at hea s Q desires The insulator shown in the accompanying drawii'ig consists of an insulating strip 1, 01' Wood or other non-conducting material, to which are bolted end castings 2 and 3, each of these castings being. provided with two outwardly extending ears l which are perforated to 1 receive a transverse bolt 5.

Cooperating with eachofthe end castings just described is a connecting member 6 provid'ed with a hook 7 which engages the bolt "5 and, when the device is under tension, serves to hold the insulator in plate.

The member 6 1s forked and i perforated to receive transverse bolts 8, 9 and 10. The

bolts"8 and 9 are adapted to receive con necward'ly, as shown in Fig. 2. The weight of the glider 14 is supported by means of a spring 15 the ends of which are attached at 16 to the hooked connecting memberd the connection between the glider 14: and the spring 15 being adj ustably effected by means of a rod 17 and clamps 18 and 19.

The shape of the guide 13 is so seleeted that free movement is permitted betweenthe guide and the bolt 10, so that the glider 14 is permitted to move freely against the pressure of the trolley, and the formation of hard spots at these points is thereby avoided. The bolts 9, as shown in Fig. 2, are provided with eye nuts 20 to which the usual steady spans may be attached.

In its normal operation, my device does not differ materially from the section insulators which have heretofore been in use. When, however, replacement or repairs are required, it is only necessary to remove the strain of the trolley from the insulator, by means of a set of blocks or otherwise, when the insulating section can be disengaged from the hooks 7 and replaced without disturbing either the trolley connections or the glider attachment-s. A considerable saving in time and labor is thereby efi'ected.

The structural details which I have shown and de cribed are those which I have found to be advantageous for the purposes indiated, but i ste be i ederstoed th su ous modifications may be made without departing from the scope of my invention. It

is therefore .to be understood that no limitations are to be imposed upon my invention except such as are indicated in the appended claims. 7

I claim as my invention:

Y 1'. A section insulator for trolley con-' ductors comprising an insulating member, and means for connecting the opposite ends of said member to the trolley-conductor sections, said insulatingmember being so constructed thatit is freely removable from the structure bydrawing. the connecting meansjtoward one another and lifting said membervertically from the structure.

2. A section insulator for trolley conductors comprising an insulating member and a connecting member releasablyattached to one end ofsaid insulating member, said members being so constructed that drawing said members together renders said insulating member freely removable.

' 3. A section insulator for trolley conductors comprising an insulating member and a connecting member provided wlth a hook for attachment to the'said insulating member, said members being so constructed that ,drawing said members together causes said hook to become disengaged from said insulating member and renders said insulating member freely removable.

Gopies of this patent may be obtained for ductors comprising an insulating member a connecting member provided with a hook for attachment to the said insulating member and also provided with means for attachment to an adjacent trolley-conductor section, and a glider supported by the said connecting means.

6. A section insulator for trolley conductors comprising an insulating member,

castings secured to the opposite ends of the said insulating member and provided with transverse bars forming open eyes, and connecting members carrying gliders and provided with hooks for engaging the said transverse bars and also provided with means for attachment to adjacent trolleyconductor sections.

-,Z. A section insulator for trolley conductors comprising an insulating member, castings secured to the opposite ends of said insulating member, connecting means releasably attached to said castings and adapted to be secured to an adjacent trolleyconductor section, and a glider supported by said connecting means and independent of said insulating member.

8. A section insulator comprising an insulating member provided with end cast ings, a glider, and a connecting member interposed between a trolley-conductor section and one of said castings and releasably engaging one of said castings, said glider being resiliently supported by said connecting member.

In testimony whereof, I have hereunto subscribed my name this 9th day of Man,

GEO. B. ELY.

five cents each, by addressing the Commissioner of Patents, Washington, D. 0.

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