US287322A

US287322A - Chaeles g

Info

Publication number: US287322A
Authority: US
Publication date: 1883-10-23
Anticipated expiration: 1900-10-23

Description

(No Model.)

G. G. PERKINS.

ELECTRIC SWITCH AND GUT-OUT. No. 287,322. g Patented Oct; 23, 1883.

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UNITED STATES PATENT OFFIcE.

CHARLES C. PERKINS, OF NE\V YORK, N. Y., ASSIGNOR TO THE lMPERIAL ELECTRIC LIGHT COMPANY, OF SAME PLACE.

ELECTRIC SWITCH AND CUT-OUT.

SPECIFICATION forming part of Letters Patent No. 287,329, dated October 23, 1883.

Application filed May 10, 1883.

To all whom, it may concern:

Be it known that 1, CHARLES G. PERKINS,

a citizen of the United States, and a resident of New York, in the county of New York and State of New York, have invented certain new and useful Improvements in an Electric Switch and Automatic Cut-Out, of which the following is a specification.

My invention relates to an electric safetyswitch provided with four poles and automatic cut-out, the whole placed in the main electrical circuit between a generator and electric lamps.

The first part of my invention consists of a cylindrical box made of insulating material, provided with a swivel-pin on the bottom thereof. Said box is also provided with a series of flat metallic spring-blades fastened onto the exterior thereof and projecting therefrom. The upper end of the box is also provided with notches, which will be more fully de scribed hereinafter.

The second part of my invention consists of two clasping-springs held to the interior of said cylindrical box. by means of screws and nuts, said springs holding astrip of metal usually employed for cut-outs. V

The third part of my invention consists of a block of insulating material having a circular aperture therein. Said block is provided with four metallic plates, representing the four poles, projcctingslightly into the aperture and connected with the mainline wires leading from a generator to the electric lamps.

The fourth part of my invention consists of a circular block made of insulating material, mounted with a ring of flat spring metal, a portion of which projects therefrom. The said block is also provided with an upright passing through a cover hinged to the main structure. Said upright projection is connected witlra suitable handle, to be operated when opening and closing the circuit.

In the drawings, Figure 1 represents a plan view of the satetyswitch and automatic cutout, with its cover raised in a perpendicular position, and shown in section. Fig. 2 repre sents a vertical section taken on line a." m.

Similar letters refer to similar parts th roughout the drawings, in whicha represents the cylindrical box, with flat Springs 6 Z) Z) I) fastened thereto by means of (No model.)

the screws and nuts 0 c c c, the whole turning on the swivcl-eonnection (Z. c c are the clasping-springs, holding the cut-out wire or strip f in position. 9 are the notches on the 5 5 upper end of the cylindrical box a. The box a is arranged within the aperture h of the main block it, which is provided with the metallic plates 6 t" 2' 2', representing the four poles c011- nected with the main-line wires. 7c isthe cover, held to the main block h by the hinges Z. on is the circular block of insulating material, provided with the fiat spring a, with the portion 01 thereof projecting therefrom, and is also provided with an upright projection, of.

Mode of operation: \Vhenever the cut-out wire shall have been properly adjusted, the cover is closed and ready to perform its funetions. If more current should attempt to pass through the cut-out than could be accomlnodated by the lamps,'the wire .iorming the said cut-out will melt and thus break the circuit.

If the attendant desires to break the circuit,

he should turn the switch-handle 0 until the portion 91. comes in contact with one of the notches g, which will cause the box (6 to turn and carry with it the springs I) b b b" until they shall have snapped off from the plates 1? i i" 1"", thus cutting out the four poles, the result of which prevents a short circuit be- So tween the lamps and the source of electric energy. The circuit may again be closed by turning the handle further on. 'When the circuit is broken in this manner, thesprings fall into the notch 19, which prevents said springs 8 5 from coming in contact with the metallic plates representing the four poles of the switch-box when by accident they should be turned the other way. XVhen the circuit shall have been broken by the melting of the cut-out wire, another may be placed therein without dil'iiculty and immediately.

The circuit-The current passes through the positive main-line wire 9 and enters the block at 1 thence to the plate 2', to the spring I), 5 from which it passes to the screw 0,- thence to the claspingspring e, to the cut-out wire f, from which it passes to the spring 0; thence to the screw 0, to the spring-blade b,- thence to the plate Z, from which it passes to the main-line IOO wire y at 2, to the lamps, through-which it passes to the negative main-line wire y, to the I asme plate i thence to the spring b", to the screw a"; thence to the wire 2, to the screw 0 from but I am not aware that they have ever been which it passes to the blade b thence to the plate i, to the negative main-line wire at 3, back to the source of electric energy.

I am aware that combined switches and cutoutshave heretofore been made with four poles;

made with devices for quickly breaking or closing the main circuit, thus preventing the current from burning or destroying the switch mechanism.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In combination with controlling mechanism of an electric switch having four poles and automatic cut-out, the cylindrical box a,

. having notch g, swivel-pin d, spring-blades b I) b ll screws 0 c c c, clasping-springs ec, and cut-out wire 2, substantially as shown and described. I

2. In combination with the circuit closer and breaker of an electric switch and automatic cut-out, the circular block m, flatspring n, and projection n, inv combination with vthe upright projection n handle 0, and cover k,

CHARLES G. PERKINS.

\Vitnesses:

J. A. HURDLE, GEORGE BECKER.