US627997A - Automatic magnetic circuit-breaker. - Google Patents

Description

N0. 627,997. Patented IuIy 4, |899. P. H. GULDEY.

AUTDMATIC MAGNETIC CIRCUIT BREAKER.

(Application led Oct. 26, 189B.)

(No Model.)

`UNITTED STATES PATENT FFICE.

PAUL R. GOLDEY, OF PHILADELPHIA, PENNSYLVANIA, ASSIGN OR, BY MESNE ASSIGNMENTS, TO THE GENERAL EQUIPMENT COMPANY, OF NEIV JERSEY.

AUTOMATIC MAGNETIC CIRCUIT-BREAKER.

SPECIFICATION forming part of Letters Patent No. 627,997, dated July 4, 1899. Application filed October Z6, 189,8. Serial No. 694,582. (No mcdel.)

To @Z whom t may concern;

Be it known that I, PAUL R. GOLDEY, a citizen of the United States, residing in the city and county of Philadelphia, State of Penn- Sylvania, have invented a new and useful Improvement in Automatic Magnetic Circuit- Breakers,which improvement is fully set forth in the following specification and accompanying drawings.

lo My invention relates to circuit-breakers of the type in which the breaker is actuated to open suitable contact devices by an abnormally-excessive flow of current through thc line or when the current falls below a predetermined amount, said breaker being also actuated by the flow of current through circuits other than the circuit opened by the circuitbreaker itself 5 and the object of the invention is mere particularly for increasing the zo efficiency of devices of this character over similar machines nowin use, whereby the danger of causing an arc between the ends of the circuit-wire or contact devices opened bythe breaker will be reduced.

It furtherconsists in the provision ofa counterbalanced or weighted lever, formin ga hammer, which is movably supported above an unlocking-lever, said weight beingheld in the desired position by means of a suitable trig- 3o ger of novel construction.

It further consists of novel details of construction, all as will be hereinafter fully set forth, and particularly pointed out in the claims.

55 Figure l represents a sideelevation of an automatic magnetic circuit-breaker embodying my invention. Fig. 2 represents on an enlarged scale a vertical sectional view of a portion of the apparatus seen in Fig. l, showing in dotted lines the different positions the parts assume due to the actuation of the electromagnet of the circuit-breaker.

Similar letters of reference indicate corresponding parts in the figures.

Referring to the drawings, A designates a circuit-breaker, the same being supported upon a suitable wall or switchboard and consisting of a bracket B, having the arms C and D projecting therefrom.

5o E designates a switch-carrying arm which is pivoted to the arm D at the point F, said switch-carrying arm having an offset upper portion G, in which is located the solenoidcoil or electromagnet I-I, of copper or other material, which is in electrical connection with 55, the circuit intended to actuate the electromagnet and has the conductor J leading therefrom to a memberof the contact device K, the latter consisting of thin plates of the usual construction. 6o

L designates the core of the magnet H, in which is located the armature M, which latter has attached thereto the yoke N, of iron or other material.

P designates a lock-nut, of brass or other material, which has the adjustable screw-bolt Q passing therethrough, the head R of which is adapted to contact with the extremity S of the lever T, said portion S being normally in. such a position that the lower surface ofthe 7o head R rests thereon, with a clearance or free space between the lower portion of the lever T and the adjacent face. of the yoke N, thus permitting a free and unimpeded movement of the yoke N. The lever T is fulcrumed on the pin U, which latter is engaged by the recess or nose V of the locking-le'verV, which is mounted on the shaft X, the latter having its bearings in the arms C.

Y designates an extremity of the lever T, 8o which is adapted to engage the recess Z of the trigger A', which latter is pivoted at Bto the lever C', which carries the weight or counterbalance D', said arm being freely movable on the shaft X, and it being noted that said weight D is located at one side of the shaft X, said arm and weight forming a hammer, and it being seen that said trigger has the lug E thereon, which is held normally between the stationary pin Il" and the extremity Y of 9o the lever T, said trigger being held in its proper position by means of said spring G.

H designates a link having one end pivoted at J to the exterior K' ofthe switch-carrying arm E, while the other end of said link is pivoted to the arm L', which is mounted on the shaft X.

M designates a roller mounted on the rod N', which is cushioned on the spring P.

WX designates a coil or other spring having roo one end attached to the lever W and its other end secured to a suitable fixed point, as the bracket C, whereby the lever W is always1 ,1, and .if the current falls below a predetermined amount or upon any increase of the current above the normal, or on any variation of the iiow of current through other circuits than the circuit opened by the circuitbreaker itself, the proper connections having been made, the armature M will be drawn upwardly by the action of the magnet H, thereby raising the yoke N and the end S of the lever T, it being noted that a freeinitial movement of said yoke takes place before the latter strikes the end S of the lever T. By the above action the trigger A will be depressed to the left of the portion seen in full lines in Fig. 2, whereupon the hammer or weight D', being unsupported, falls and contacts with the -locking-lever W, therebylifting the opposite end thereof out of engagement with the pin U, whereupon the switch-carrying arm E, being detached and the spring.,r P/ pressing on the extension K through the medium of the rod N and roller ll" swings to the right of the position seen in the figures in the direction of the arrow a, (seen in Fig. 2,) and the contact is then broken between the plates constitutin g the contact device K, as is evident.

I desire to call especial attention to the function of the trigger A and its adjuncts and also to the location of the weight or hammer D, since its operation is rendered much more effective and instantaneous than in other constructions where said hammer and trigger are dispensed with.

It will be apparent that in order to reset the circuit-breaker it is only necessary that the parts be moved from the position seen in dotted lines in Fig. 2 to the position seen in full lilies again, in which latter position the circuit-breaker is again ready to be operated, it being of course understood that the arm E is moved from the position in which it falls in the direction of the arrow a to the left until the parts assume the position seenv in full lines, the trigger A being locked in operative position again between the end Y of the lever T and the pin F', while the recess V of the lever W is caused tovengage the pinU again, and thus serves to hold the parts in position in readiness to be operated again.

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

1. In a circuit-breaker, the combination of a hammer, a trigger carried thereby, a locking-lever, means for locking said trigger in position, and devices for operating the locking means and said trigger when the current actuates the electromagnet.

2. In a circuit-breaker, ahammer suitably supported and standing normally at one side of its fulcrum, a trigger pivoted to said hammer, a spring common to said hammer and to said trigger, whereby the latter is held in normal position, a switch-carrying arm, a solenoid or magnet supported thereby, a lockinglever for said arm, and a lever operated by the armature of said magnet, said lever cngaging said trigger.

3. In a circuit-breaker, a pivotedvswitchcarrying arm, a solenoid and armature carried thereby, a yoke attached to said armature and operated ,by said solenoid, a lever suitably fulcrumed and operated by said yoke, a hammer suitably supported, a trigger attached to said hammer and having an end bearing on the end of said lever, a locking-le` ver for holding said switch-carrying arm in position, and devices operated by said hammer for effecting the breaking of the circuit when the current actuates the electromagnet.

4. In a circuit-breaker, a pivoted switchcarrying arm, a solenoid and armature carried thereby, a yoke attached to said armature and operated by said solenoid, a lever suitably fulcru med and operated by said yoke, l

a hammer, a fulcrui'n therefor, a trigger attached to said hammer and having a portion engaging said lever, said hammer standing normally at one side of its fulcrum, so that when said lever is disconnected said hammer falls, a locking-lever for holdingsaid switchcarrying arm in position, and means for enabling said hammer to impact on said locking-lever when the current actuates the elec-V tromagnet.

y 5. In a circuit-breaker, a pivoted switchcarrying arm, a lever pivoted therein, a so'- lenoid carried by said arm, connections common to the armature of said solenoid and to said lever for operating the latter when the current actuates the electromagnet, a hammer suitably supported, a trigger carried by said hammer and having a portion thereof held between a pin or abutment and the end of the lever operated by said solenoid, a spring for said trigger and a locking-lever adapted to be actuated by said hammer when the latter falls.

6. In a circuit-breaker, a pivoted switchcarrying arm E, an electromagnet and its armature supported by said arm, a lever T suitably fulcrumed, connections common to said armature and to said lever, whereby the latter is operated when the current actuates the electromagnet, a hammer D supported upon its fulcrum and at one side thereof, atrigger A carried by said hammer, a spring G common to said hammer and to said trigger, the latter having a projection or lug E, which is held between the extremity Y of the lever T and the pin F, a locking-lever VV suitably supported, a pin engaged by a recess in said locking-lever, the extremity of the latter being adapted to be depressed bythe falling of said hammer thereon when the current actuates the electromagnet. 5

7. In a circuit-breaker, the combination of IOC IIC

a hammer suitably supported, a trigger cartion and devices for operating the locking ried by said hammer, alocking-lever suitably means and said trigger when the current aesupported and adapted to be actuated by the tuates the electromagnet.

i impact of said hammer when said trigger is PAUL R. GOLDEY.

disengaged and said hammer falls, said ham- Witnesses: mer normally standing at one side of its ful- JOHN WIEDERSHEIM,

Crum, means for locking said trigger in posil E. HAYWARD FAIRBANKS.

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