US934781A - Caloric circuit-breaker. - Google Patents

Description

e. e. WOODW ORTH. GALORIG OIROUIT BREAKER.

APPLICATION FILED MAR. 9, 1909.

Patented Sept. 21, 1909 cuit-breakers'and to render them more posi-- .To all it my am ra:

beemployedv r A representsfla suitable casing providedl CHARLES C. FVOODWQBTH, OF PORTLANQ', OREGON.

CALORIC CL'BLCUIT-BREAKER.

Specification .of Letters Patent.

Patented Sept. '21, 1909.

lppiication'filed March 9, 1909. Serial No. 482,239.

Be it known that 1, CHARLES C. W'oonwon'rn, .a citizen of the United States, and a resident of Portland, in the county of Multnomah and State of Oregon, have invented a new and useful Improvement in Caloric Circuit-Breakers, of which thejfollowing is a specification.

My invention relates to circuit-breakers of the type in which the expansionof a wire traversed by a portion of the main line current controls the opening of such main line erated devices.

[without having recourseto mechanically opand simplify theico nstruction of caloric ci-rhereinafter set forth.

form a part of this specification, Figure 1 is;

an elevation partly in section of one embodiment of my invention and Fig. 2 is a planview .of one form of arc-breaker that may with binding posts '13 B for connecting the f circuit-breaker in the main line. I a

which 1) is stationary and 'F is movable,j which are connected with the main l ne terminals. The stationary contact member D1 material.

G is a tube provided with spring c'li s adapted to embrace the lower 1 art 0'' thef contact member F. The spring 1s secured in any suitable manner to the tube G and to the upperportibn of the contact member Ff so that when, by means of the arm J extending through-a slot in the casing, the members 1* and D are placed in contact, the spring I tends toseparate the the line circuit.

same and thereby open nected l?! the flexible conductor 6 with the L is a latch arranged to hold the member F in contact with the member D by taking in the her F.

O 0 represent a suitable thermally actuated cevice arranged so that the passage ofia groove near the upper end of the .mexnj predetermined amount of current ,there-g through will cause suflicient expansion to' effect the withdrawal of the latch and thereby open the circuit. In the present instance the said thermally actuated device consists of wires suitably mounted in the casing and connected by the cords W to the cord V which in turn is connected to the toggle leverM, v nd tends to hold the same inthe position shown.

Asuitable resilient mem ber such as the spring N is connected to said toggle-lever and tends to move the same upwardly, so that the saidtoggle is balanced between the action of said spring and the cords connecting it with the thermally actuated device.

While I may employ various forms of connections between thetoggle, which is operated by the expansion of the thermally actuated device (land the latch which holds the p I t g members D and in contact, I have shown In the drawings which accompany and n the accompanyingdrawings an arrangement of link connections, the same consisting of-the link 1 pivoted to the latch and to the link 2;, which in turn is pivoted to the lin'kfi, the upper end ofwhich is connected with one farm of ,the toggle M. A spring 4;

is fixed to the link 3 and serves to hold the free end of the link 2 against said link 3.

I The funotinn. of this com ensating-spring is D and F are two contact members, of i to ,permit aslight later-a movement of the latch fL xto the left when the contact between D and F .is closed and then to force said latch to the rightand into the groove in the upper part .QT' the member F when the same has reached its uppermost position.

' represents a su tably graduated scale wh ch may be placed on the outside of the casing P is a sliding 'contactmember carrying a pointer coiiperatingwith said scale. The sliding contact member regulates, the length of the thermally actuated device." 95

O which is in circuit, in a manner which will be obvious;

A. flexible conductor a was the la't h with one side of the conductor {3 and'the' regulator .P which makes sliding 'contactjioo with the other side of said conductor is can ember 1. throaghtheflsprin clips 7H- A suitable form of arckbreailrerfwhich may be employed in conn ction with the caloric '105 circuit-breaker abote described consists of e d sk S of mica or othe s e material sass-119a to the rocker C, which in turn is ivo ed to the upport Ufare stqps governing the position of 110 said rocker and Y is a pin cooperz-iifing with the projections T T to actuate said rocker in manner which will be obvious.

The operation is as follows: The regulator 55 P is Set so that a certain loml may he carried .l iout actuating; ihe circuit breaker, the

member i is plzu-ezl in. contact with the memher I) and the main line thereby (JlOSQfl. A

certain very small fraction oi the main line 10 current will pass'through the loch L, condoctor a, a portion or the 37 actuated 5 device 0 and back to the roof no by Way l ofthe conductor 2}. as the current rises shoves predetermined value, this value -beioogdetermmed by the position the regulater 1, the expo-nsoil? the thermally acl tnatedl devi e'fi enab s em: I

stroy the of i c 1 it, throu h the link ism to the l 23 latch the movable contact member l whereupon the spring rlraws the latter downward and opens the main line. vii: tee of the small mass of the tl'iermslly uctu- :ited clm ice Q, the latter almost immediately 25 cools and resumes its normal position thereby drawing thevtoggle against the tension the spring N to nouns-l nosition so tha the latch L extends into the path oi the conto ct member F. 'lhe latter now raised by the arm J to close the circuit, and held.

in position by the latch.

rub

' tions may be made in, the details of (he anparatus above described end in the circiiit arrangements therein n ilhont dope the spirit of my invention.

1 claim: 1. In a caloric circuit-lweaker, the combination with a line circuit of :1 stationery 40 contact member and a movable contact m mber connected with soirl, .i

.u, whereby said members m 243 he pie. erl. i tact to close said circuit, moons :5"; said members in contact, means for se 1 ing sairl members thermally actuated controlling the separation thereof antl means for extinguishing the arc prodncc by sep- Mating said members.

2. In a caloric circuit-brenker the combination with a line circuit of L stationery contact member 231C318, movable contact men:- ber connected. with circuit, mi -es whereby said members may be contact to close said. circuit,- means for hold' said members in content; moons rating said members, thermo" mmo. means for controlling; the separation thereof.

and means operated by said movable contact member for extinguishing the are produced by separating said members In caloric circuit-breaker; the comhi no tion with a line circuit of a stationary contact member and a movable contact member connected with said circuit, a thermally scv tun-ted device for controlling the separation l ticnory cont. men.

, tact member and movable, conta t able member in Contact with the stationary member o toggle-lever, links connecting Si l-'31 latch and toggle-lever, and s compensating spring cooperating with. two members of said link connection.

:1, caloric circuit breaker, the combination with i of :1 stationary conmember connected with sahlcircnit, means whereby said members may be placed in co to hold or said members, the; controlling the arrimgorl to be acuizizlecl i g said A. tact membei. ml member oi insole. i'ierizil carried by said rocker to be interposed between said contact m hers to extinguish the are when said memiers are sepi. alter L In it coloi ic circuit breaker v a casing inclosing 2. stationary on :t member n l 3L movable member can pin, moons whereby said members may be pl ced, ino toot, 111 ,ns for her is ,m n )(EIS in tact means for separating; sairl mom? thermally acts ed control the separation thereof, o rocker pivoted LO irl and provided with two projecone arranged in the ath oi": suhl pin wlmn said mom, s are in contact owl the .er in the path of said pin when sziaicl, memsre scpzirsfioco and a member of insw in; material carried by said rocker and nged to interposed between said contact members to extinguish the are when said members are se s liQl.

Tu In it caloric c provided with two sl a casing e: of. mo cable conn arm progectmg throi g'h one *chc o movable tact member cl: slots connected with said circuit, means :i movable contact member said niembei's may be placed in contact to l spring member and said thermally actuated close said circuit, means for holding said device. a v v members in=contact, means for separating In testimony whereof, I have hereunto said members, a thermally actuated Wire consubscribed my name this 3rd day of March 5 trolling the-separati0n of said mgmbers, a 1909.

to de-lever, links connecting sai to le- K lei e r with said means for holding said fi m- CHARLES WQODVYORTH' 17ers in contact, a spring member, and means Witnessesz' whereby sai d toggle lever is held in equilib- EVA FORTMILLER, 0 rium between the opposing' actions of said J. G. BRYANT.

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