US963859A - Circuit-breaker. - Google Patents

Description

E. A. BURROWS & P. P. McINTOSH.

CIRCUIT BREAKER.

APPLICATION FILED APR. 9,1906.

963,859. Patented July 12, 1910.

3 BHEETSSHEET l.

.Zizoezzfors:

E. A. BURROWS & F. P. MOINTOSH. CIRCUIT BREAKER.

APPLICATION FILED APE.9,1906.

963,859. Patented July 12,1910.

3 SHEETS-SHEET 2 E. A. BURROWS & F. P. MOINTOSH.

CIRCUIT BREAKER.

APPLICATION FILED APB.9,1906.

Patented July 12, 1910.

.3 SHEETS-SHEET a.

UNITED STATES PATENT onnion.

EASTMAN A. BURROWS, OF CHICAGO, ILLINOIS, AND FREDERICK P. MGINTOSH, O1 ELKHART, INDIANA, ASSIGNOR S, BY MESNE ASSIGNMENTS, TO GENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

CIRCUIT-BREAKER.

Specification of Letters Patent. Patented July 12, 1910.

Application filed April 9, 1906. Serial No. 310,789.

.a certain new and useful Improvement in Circuit-Breakers, of which the following is a full, clear, concise, and exact description.

Our invention relates to switches for electric circuits, and more particularly to high- -potential switches or circuit breakers in which the contact parts are immersed in oil or other insulating fluid to prevent the formation of arcs when the switch is opened.

The object of our invention is to produce a simple and eflicient means for operating the circuit breaker, the control for both 0 ening and closing the same being obtains by a single pushbutton circuit.

In its preferred form, our invention contemplates a structure in which the switch proper and a solenoid for actuatin the same are inclosed in a box containing 0' in which said switch is submerged. This box is mounted in some convenient position, as for example on the back of the switchboard. The solenoid circuit is controlled by a push button mounted on the panel of the switchboard. Since but a single button thus controls both the opening and closing of the switch, the number of panels required is reduced to a minimum with a onse uent chea enin in the cost of installation.

These and other features of our invention may be more readily understood by reference to the accompanying drawing, in which,

Figure 1 is an elevation partly in vertical section, of our invention; Fig.2 is a view similar to that of Fig. l, at a right angle thereto;. Fig. 3- is a plan view showing the top of the cylindrical box; and Fig. 4 is a diagram showing the circuits employed in our invention.

Similar characters of reference indicate similar parts wherever shown.

the opposite ends of the solenoid coil.

d'eemed/ necessary, in oil or other insulating fluid contained in the cylindrical box A. The members 2, 3, are mounted on an insulating plate 6, secured between the upturned, bifurcated end of abracket 7. Said bracket may be secured in anysuitable manner within the casing, as for example to a plate 8, which is in turn secured to the top 9 of the box. The upturned ends 10, 10, of the bracket serve as mounting posts upon which the members l of the toggle 4 are pivoted.

The conductors of the main circuit pass through the insulators 11, 11, in the top of the box A, and'are secured. to the members 2, 3, respectively. The conductors leading ger 5v of the solenoid is connected by a rod v 13 to the toggle 4, and when said plunger is lowered or raised, it operates said toggle to close or open, respectively, the circuit breaker.

The solenoid coil is equipped with a rocking armature 14E, pivotally mounted at 15 upon the arms 7. Said armature is U- shaped, andthe legs 1i and 14 extend over The leg 14'', adjacent the toggle mechanism, is slotted to permit the passage therethrough of the rod 18. Bridging members 15 and 16 are insulatedly mounted upon the legs 14 and 14 and serve to connect contacts 17 with 17 and 18 with 18*, respectively, when the corresponding leg of the armature is lowered. I

Referring'to Fig. 4', it will be observed that the solenoid coil consists'of two parts, 19, 20, extending from contacts 17 and 18* respectively, and forming a continuous winding. From the point 21 in said winding, a conductor 22 extends to one pole of a battery 6. A conductor 23 extends from the other pole of said battery to a conductor 2%,. which connects contacts 17 and 18. A push button at 25 controls the flow of current from the battery I), said push button being located at any convenient position, as for example, upon the switchboard panel.

With the parts in the position shown in F ig'. A, if the push button be operated a circuit will be closed from battery I; through conductors 23, 24, contact 18, bridging meniher 16,, contact 18 winding 20, conductor 22 tobattery. As aresult of the energiza-' tion of the 'upper half of the solenoid the plunger 5 is drawn upward, operating-thereby the toggle mechanism to bring blades. 1 out of contact with switch member 2. As

' long as the battery circuit is closed by the push button at 25, the end 14* of the armature 14 is attracted with sufficient force to hold said armature in the position shown, against the force of a coil spring 26 which is compressed by the plunger 5. Upon the push buttonbeing released, however, the

spring 26 will reverse the .position of the armature, and thereby close contacts 17 and 17 openmg contacts 18 and 18*. The parts will thus be brought into such positions that uponthe next succeeding closure of the circuit by the push button at 25, the part 19 of the solenoid will become energized, thereby reversing the position of the plunger and closing the switch contacts of the circuit breaker. A spring 27, corresponding in function and operation to spring 26, serves of means for operating the same comprising an electromagnet having alternate windings, a movable member connectedto said circuit breaker and arranged to be moved in a direction to close the same by the energization of one of said windings and in a reverse direction to openthe same by the energization of the other of said windings, an armature for said electromagnet adapted in either of its opposite positions tocl'ose a corresponding winding of said electromagnet, and means for shifting the position of said armature at each successive opening of the circuit of said electromagnet';

2. The combination with a circuit breaker, of means for operating the same comprising an electromagnet, a circuit therefor having parallel branches with a winding for said I electromagnet in each of said branches, a

normally open switch in said circuit, an armature for said magnet adapted when in its alternate positions to open one of said branches and close the other, means for reversing the position of said armature after each successive actuation of said switch, and a movable member controlled by the ener gization of said e'lectromagnet and arranged to be moved in a direction to close said circuit breaker by the energization of one of said windings and in a'r'everse direction to open said circuit breaker by the energize.- tion of the other of said windings.

3. The combination with a circuitbreaker, (if means for operating the same, comprising an electromagnet, a circuit therefor having parallel branches with a winding for said electromagnet in each of said branches, a normally-open switch in said circuit, 'an armature for said electromagnet adapted when in either of its opposite positions to close a corresponding winding of said electromagnet, a spring at each end of the armature, one ofsaid springs being adapted to reverse the position of saidarmature after each successive actuation of said switch, and a movable member connected to said circuit breaker and arranged to be moved in a direction to close said circuit breaker by the energization of one of said windings and in a reverse direction to open the same by the energization of the other of said windings.

4. The combination with a circuit breaker, of means for operating the saine comprising a solenoid, a circuit therefor having parallel branches with a winding for said solenoidin each of said branches, a normally open switch in said circuit, an armature for said solenoid adapted when in its alternate positions to open one of said branches and close the other, a spring for reversing the position of said. armature after each successive actuation of said switch, and a plunger for the solenoid adapted to be moved in a direction to close said circuit breaker by the energization of one of said windings and in a reverse direction by the energization of the other of said windings.

5. The combination with a circuit breaker, of means for operatin the same comprising a solenoid having a ternate windings, 1a

normally open circuit for said solenoid, a switch controlling said circuit,' a plunger connected to said circuit breaker and adapted to be moved in a direction to close the and adapted to be moved in a direction to close the same by the energization of one of said windings andin a reverse direction 'by the energization of the other of said windings, a rocking armature adapted when in either of its opposite ositions to clos'ea corresponding winding of said solenoid, and

means for shifting the position of said armature at each successive opening of the circuit of said solenoid.

7. The combination with a circuit breaker, of a box within which said circuit breaker is mounted, an insulating fluid in which the circuit breaker is submerged, a solenoid mounted in said box, a circuit for said solenoid having parallel branches with a winding for the solenoid in each branch, a switch controlling said circuit, an armature controlled by said solenoid for shifting the circuit from one oi said windings to the other upon each successive actuation of said switch, a plunger for said solenoid con- 15 In witness whereof, we hereunto subscribe our names this 2nd day of April, A. D. 1906.

EASTMAN A. BURROWS. FREDERICK P, MoINTOSH.

Witnesses:

ROY T. ALLowarY, E. F, BEAUBIEN.

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