US805167A

US805167A - Insulator-pin.

Info

Publication number: US805167A
Application number: US23935505A
Authority: US
Inventors: Louis Steinberger
Original assignee: Individual
Current assignee: Individual
Priority date: 1905-01-03
Filing date: 1905-01-03
Publication date: 1905-11-21
Anticipated expiration: 1922-11-21

Description

PATENTED NOV. 21, 1905.

L. STEINBERG-ER.

INSULATOR PIN.-

APPLIGATION FILED JAN.3.1905.

/NVENTOH Loaz' Hez'nefgef Arrow/EVS LOUIS STEINBERGER, OF NEW YORK, N. Y.

INSULATOR-PIN.

Specicaton of Letters Patent.

Patented Nov. 21, 1905.

Application filed January 3, 1905. Serial No. 239,355.

To a/ZZ whom it may concern.:

I electrose,made up of a cylindrical portion Be it known that I, LOUIS STEINBERGER, a l 11, frusto-

conical portions

12, 13, 14, and 15,

citizen of the United States, and a resident of the city of New York, borough of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Insulator- Pin, of which the following is a full,.clear, and exact description.

My invention relates to devices for the support and insulation of electrical conductors, and more especially to insulator-pins used in connection with currents of high voltage.

My more particular objects are to so improve the insulation as to lessen the tendency under wet-weather conditions of a high-voltage current to arc over the surface of an insulator or its support or partly over the surface of an insulator and partly through the air from the conductor to the ground or to the support for the insulator, if this support be grounded. sulating device and its accompanying parts from deleterious action by the weather and to enable it to be used for supporting insulators or for supporting a conductor directly, if desired.

In addition to the objects above enumerated I strengthen the support for the cable or other conductor and increase the durability of the support, so that it may do its duty fairly well even when broken or otherwise badly damaged. I also shield certain metallic parts not directly used in supporting the cable, so as to prevent the possibility of an arc to any part of the supporting-pin or of its immediate connections.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a vertical section through an insulator-pin made in accordance with my invention. Fig. 2 is an inverted plan View of the body portion ofthe pin removed from the cross-arm. Fig. 3 is a vertical section through the cap 25, of insulating material; and Fig. 4 is aplan view of the cap removed from the cross-arm.

The cross-arm is shown at 5 and is provided with a bored aperture 6 of the usual form. A tubular core 7, of metal, is provided with indentations 8, constituting anchorages, the upper end 9 of this tubular member being closed, the other end 10 being threaded externally and constituting a shank. Encircling this core is a mass of insulating material, preferably I also seek to preserve the inand a shank portion 16. rlhe cylindrical portion 11 is provided with an annular step or shoulder 17, the frusto-

couical portions

12 and 13 are provided with annular steps or shoulders 18 19, and the frusto-conical portions 1415 are provided with annular recesses 2O 21. The frusto-conical portion 15 issurmounted with a cylindrical stem 22, threaded externally at 23 and provided at its top with a slot 24. The thread 23 is for the purpose of engaging an insulator, preferably of the socalled hood type, and the slot 24 is for the purpose of engaging a conductor directly should it be deemed advisable to use the same in the absence of an insulator.

Below the cross-arm 5 is a cap 25,0f insulating material, preferably electrose, engaging' a washer 25", of soft rubber. This cap is provided with facets 26, whereby its periphery is rendered angular for the purpose of enabling it to be readily turned. Embedded within this cap is a metallic portion 27, provided with an annular flange 28 and with a sleeve portion 29, the latter having a threaded portion 30 for engaging the lower end or shank portion 10 of the tubular core 7. A revoluble nut 31, threaded internally, also engages this threaded shank, and an annular washer 32 is preferably employed in connection with the nut 81, but being removable is not essential. The tubular core 7 is united to the jacket of insulating material encircling' it preferably by molding, the anchorages 8 effective] y preventing movement between the parts.

The insulator-pin is assembled as follows: The body portion of the pin, provided with a threaded shank 10, is mounted in the position indicated in Fig. 1, the shank 16, of insulating material, projecting nearly but not vquite through the aperture 6. The washer 32 is next slipped loosely over the shank 10, the nut 31 is tightened so as to bind the washer 32 rigidly against the under face of the crossarm, and the shoulder 17, of insulating material,is thusdrawn down tightly upon the upper surface of the cross-arm. soft rubber, and the cap 25 are next applied, the threaded sleeve 29 engaging the threaded shank 10. The purpose of this cap is not merely to reinforce the nut 31, though it incidentally has such a slight effect, but is mainly to insulate the nut 31, the shank l0, and all other metallic parts. Arcing is thus effect-- ively prevented. The cap 25 and the washer The washer 25, of

IOO

IIO

25 being removable may be omitted, if desired. The shape of the anchorag'es 8 is iinmaterial, round shallow holes answering every purpose.

By the construction above described no metallic parts whatever are exposed either to the danger of arcing or to the action of the weather-that is to say, the tubular metallic supporting-stem 7 and all metallic parts in electrical communication therewith are completely inclosed with insulating' material.- The washer 25 serves as a gasket and excludes the entrance of moisture in case the under face of the cross-arm is wet.

The structure admits of general use, but is of special valueupon lines in which a breakdown of the wiring mig'ht be disastrous to life and property.

I do not limit myself to the exact details of any or all of the parts above described, no1' to any particular combination of elements entering into the construction of the insulatingpin. Neither do l limit myself to a hollow lnetallie core, nor to any particular material to be employed in making any of the insulated parts.

Having thus described my invention, I claim as new and desire to secure by Letters Paten t- 1. An insulator-pin, comprising a member of insulating material provided with a slot for supporting a conductor, and also provided with a thread for supporting an insulator on said memberof insulating' material, and means for supporting said member of insulating material.

2. As an article of manufacture, a metallic member provided with a shank portion, and insulating` material enveloping said metallic member but leaving said shank portion exposed,said insulating material having a threaded portion and also a slot for eng'aging'aconductor.

3. An insulator-pin, comprising a body portion of insulating material, a metallic core partially embedded within said body portion, and having one of its ends extending' beyond the bounds thereof, said body portion being' provided with means for engaging an insulator, and a cap mounted upon said end of said core, thus extending beyond the bounds of said body portion.

4. An insulator-pin, comprisinga body poi'- tion of insulating material provided with means for engaging' an insulator, a metallic core partially embedded within said body portion, said metallic core having one of its ends extended beyond the bounds of said body portion, a locking device for locking' said core to a support, and separate means mounted directly upon the end thus extended for the purpose of insulating said locking device and the end of said metallic core from currents flowing adjacent to said insulator.

5. An linsulator-pin, comprising' a metallic supporting member, a jacket of insulating' masealer l terial enveloping said metallic member and provided with a surface for supporting an insulator, said jacket being' provided with a plurality of hoods superposed one on the other, and means for mounting said metallic member upon a support.

6. An insulator-pin, comprising a metallic member, and a jacket of insulating' material enveloping' said metallic member and molded rigidly thereupon, said jacket of insulating l material being provided with a/ plurality of f superposed hoods integral therewith, and further provided with a surface Yfor eng'aging an insulator.

7. An insulator-pin, comprising a metallic member provided with anchorages, and a jacket of insulating' material enveloping' said metallic member and engaging said anchorages, said jacket of insulating material being' further provided with a plurality of superposed hoods and with a portion for supporting an insulator.

8. An insulator-pin, comprising a metallic member, means for supporting' the same, and a member of insulating' material mounted upon said metallic member, said member of insulating material being provided with a hood integral therewith, and further provided with a threaded surface for supporting' an insulator.

9. As an article of manufacture, a metallic supporting member provided with a shank portion, and a jacket of insulating' material provided with a plurality of superposed hoods and enveloping' said metallic member but leaving' said shank portion exposed.

l0. An insulator-pin, comprising a body portion of insulating material provided with a threaded portion for detachably supporting' an insulator, and also provided with a plurality of superposed hoods, said hoods terminating' at their bottoms in surfaces ofdilierent shapes, and means for supporting said body portion.

l1. An insulator-pin, comprising a body portion of insulating material provided with means whereby it may be mounted upon a support, said body portion being provided with a surface for detachably engag'ing an insulator, and further provided with a plurality of hoods so as to virtually present an interrupted surface.

12. An insulator-pin, comprising' a body portion of insulating material provided with means whereby it may be supported and with a surface for detachabl y engaging' an insulator, said body portion being' further provided with a plurality of hoods integral therewith, and presenting' a surface which is virtually interrupted.

13. An insulator-pin,comprising' a plurality other, the bottoms of the hoods being' provided wlth drip-surfaces of different shapes, and a metallic member for supporting said separate hoods.

of separate hoods superposed one over the 14. An insulatorpin, comprising' a body IOO portion of insulating material provided with a plurality of hoods integral therewith, said hoods being provided with drip-surfaces of different conformity and virtually presenting an interrupted surface, said body portion of insulating material being provided with means for supporting an insulator.

15. An insulator-pin, comprising a body portion of insulating material provided with a hood and with a portion for engaging an insulator, vsaid body portion being further provided with means whereby it may be mounted.

16. An insulator-pin, Comprising a body portion and a plurality of separate hoods conneoted to the same, said body portion being further provided with means for engaging an insulator and with means whereby said body portion may be mounted.

to this specification in the presence of two sub- 30 seribing witnesses.

LQUIS STEIN BERGER.

vWitnesses l VVALTON HARRISON, EvERARD BOLTON MARSHALL.