US1007770A

US1007770A - Lightning-arrester.

Info

Publication number: US1007770A
Application number: US58348310A
Authority: US
Inventors: William E Butler
Original assignee: Individual
Current assignee: Individual
Priority date: 1910-09-23
Filing date: 1910-09-23
Publication date: 1911-11-07
Anticipated expiration: 1928-11-07

Description

W. E. BUTLER. LIGHTNING ARRESTER. APPLICATION FILED SEPT. 22, 1910.

Patented Nov. 7, 1911.

w g inventor Attorneys lowi 1 voltage d vision or rnensions, housing the electrodes. The elec- \UILLIAM E. BUTLER, F DAVE CITY, NEBRASKA.

LIGHTNING-AREESTEB.

noo'mso.

Specification of Letters Patent.

Patented Nov, 1%, 1911,

Application filed September 23, 191.0. Serial No. 583,485!

To all who u it may concern:

Be it known. that I, W'ILLIA'M E. BUTLER, aeitirzen of the United States, residing at David City, in. the county of Butler and State 0 lebraslta, have invented a new and useful Lightning-Arrester, of which the folc. ecilication.

i ltion belongs to the art of arand'it more especially relates to irrester, adapted primarily for over which currents of high V charge, and the primary object of the invention is to produce a lightning arrefster involving durable means, which will permit lighting stroke to are across the 1 "es of the arrester, considerably the electrodes were surrounded iosphere. y ention, in this regard, involves a ature, which consists in the pro a vacuum chamber of suitable difurther trodes are of mercury and are unstable, or in other words, they mingle together when the high voltage is discharged, and just so he line is clear from the high. voltage, ti o electrodes will separate and settle baclri respective cells upon each side of the r ground will be broken.

A further object of the invention is to malre vacuum chamber'of the arrester of such dimensions, as to permit the Inerour to va orize without causin an en lo- 5 P g l 'sion. It is to be remembered, however, thatafter the lightning stroke is oil the line the vapor from the mercury is again absorbed by the mercury.

it is previously stated in'this specification, that this arrester is more especially applicable to lines having a grounded line. It is evident, however, that this invention may 'be applied in conjunction with electrical installation, in which there is no grounded line. there are two arresters with their downwardly extending connections (which inthe first instance connect directly with the ground,) joined together, and with a conbetween their junction and the the drawings, howeventhere is on i Yrrn the invention disclosed, but in practical fields this form r ay require certaiii alterations, and provided the alterations are comprehended by the appended claims,

the applicant is entitled to them.

'ion,a;tter which a line to the When the invention is so utilized,

v The invention comprlses't'urther features and combinations of parts, which will be hereinafter set forth, illustrated the drawings, and pointed out in 1 the appended claims.

In the drawings, Figure 1 is a' view, i section, of the lightning arrester, in Y c with the g: unded line, and show connection between. it and the grozn '22 an elevation of the lightning roster. Fig. 3 is diagrammatic view of an electrical installation, illustrating the arrester in circuit therewith.

Referring to the drawings, 1 denotes an open-ended inetal shell, which is formed with screw-threads 2. The upper portions of these threadsreceive a threaded annular flange 3 of the glass globe 4 (which forms the vacuum chamber 5 of the arrester). The greater portions of the threads 2 on gage the threads of the cylindrical insulat ing member 6. The upper surface ofthc member 6 is provided with a partition 111813'1 her 7, which divides the lower portion e the vacuum chamber 5 into two cells and 9, in which mercury 10 is placed. will be noticed, however, that in the partition '2v at its upper than. the diameter of the ti .ided flange 3 of the globe. in of this arrester, the o a globe l maybe blown. about this part i n 7, so the efore it is not impracticable to provide a j tition of the dimensions disclosed. Before the shell 1 is threaded to the annular or the globe, the insulating member 5 arranged in position in the shell.

11 represents a conductor block, which is threaded into the f isolating member 6. Connected to the block 11 at the point 32, and extending therefrom and through the memberfi, is a conductor rod 13, the upper end .of which is provided with. a contact plate 14;. This contact plate 14 is arranged in the bottom of the cell 9, inorder to cooperate with the mercury therein.

Located in the bottom of the cell 8 is a c muiar .e manuiacture 16 downwardly extends. this conductor rod 16 connections are obtained h shell 1 and the mercury in the co! The conductor block ll has conductor 17 extended between the at 18.

which the bottom the 2O denotes a conductor wire, which is connected between the shell 1, and the grounded line of electrical installation 21 (which is clearly shown in Fig. 3), in order that when a stroke of lightning strikes the line 21, the stroke is permitted to pass over the conductor wire 20 on to the shell 1, to the mercury in the shell 8, by way of the conductor 16. When the stroke of lightning reaches this point, the mercury electrodes in the cells 8 and 9 merge across the partition. This is due to the -tact that the electrodes are arranged through capillarity oval-shaped above the upper edge of the partition 7. W hen the two electrodes are brought together in this manner, the lightning stroke passes straight to the ground, by way of the conductor rod 13, the cenductor block 11 and the wire 17 When the conductor 20 of the grounded line of electrical installation is clear of the lightning stroke, the electrodes in the cells 8 and 9 again separate.

The conductor blockll is provided with depressions 22, to receive a spanner, by which the block is screwed home.

T he invention having been set forth, what is claimed as new and useful is z 1,. In a lightning arr-ester, an inclosure; mercury in the inclosure; a shell connected with the inclcsure: an insulating member within the shell. adapted to divide the mercury into spaced electrodes; means for connecting one electrode with the ground; and means for connecting the other electrode with the shell.

2. In a lightning arrester, an 'inclosure; mercury within the inclosure; a shell adapted to engage the inclosure; an insulating member within the shell, adapted to separate the mercury into spaced electrodes; means for connecting one electrode with the shell; a conducting element in the insulating member and accessible for connection with a conductor, from the exterior of the arrester; and a connection between the other electrode and the conducting element.

3. In a lightning arrester adapted for use in connection with electrical installation, an

losure having a vacuum chamber and provided with cells, said inclosure having an annular flange, a threaded shell connected to the flange, and mercury electrodes arranged in the cells, insulating means carried by the shell for separating the electrodes and insulating one from the other, thus providing the arcing poles, and a connection between the poles, the electrical installation and the ground.

4. In a lightning arrester adapted for use in connection with electrical installation, an

inclosure having a vacuum chamber and provided with cells, said inclosure having an annular flange, a threaded shell upon the flange, mercury electrodes in the cells, insulating means carried by the shell for sepa rating the electrodes and insulating one from the other, thus providing the arcing poles, a. conductor block threaded to the insulating means, a connection between the block and one of the poles, a connection between the other pole and the shell, and connections between the conductor block and the ground, and a connection between the shell and the electrical installation.

In testimony that I claim the foregoing as my own, I have hereto atiixed my signature in the presence of two witnesses.

WILLIAM E. BUTLER.

Witnesses:

W. F. DELANEY, J. K. MASTER.