US971847A - Switch and circuit-breaker for high-potential circuits. - Google Patents

Description

J. N. KELMAN. SWITGH AND CIRGUIT BREAKER FOB. HIGH POTENTIAL GIRCUTS.

Patented Oct. 4, 1910.

In ;u 6 ?2 Zor ,1773 fl l'o flmam y %JA fl 270 772 qy'.

APPLIOATION FILED .TULY 29, 1908.

?Vil &986.8

. u. N. KELMAN, SWITCH AND GIRGUIT' BBEA'KEB FOB. HIGH POTENTIAL GIBGUI'IS. APPLIOATION ILED J'ULY 29, 1908.

'971,842. Patented Oct. 4, 1910.

Eg ngjo.

&mes 44 144 !n'ven Z'Or I &a

` improvements UNITED s'rA'r s PATENT OFFICE."

JOSEPH NELSON KELMAN, OF LOS `ANGELES, CALIFORNIA.

SWITCH AND CIRCUIT-BREAKER FOR HIGH-PQTENTIAL CIBCUITS.

To all whom 'it may conce'rn:

Be it known that I, J OSEPH MAN, of the city. of 'Los' Angeles, in the connty of Los Angeles and State of California, have invented a 'new and Improved Switch and Circuit-Breaker for fligh Potential` Circuits, of which theufollowing is a full, clear, andexact specification, refer- 'ence being had to' the annexed drawings and to the figures and letters marked thereon. v

The improved switch and circuit breaker for high potential circuits, constitutingmy present-invention, is in part adevelopment of switch' and circuit breakers in respect of one of which Letters Patent have been 'issued to me, the said Joseph Nelson Kelman,

and in respect of certain further improvements upon which I have' filed another application for Letters Patent having the Serial Number 37 0,091', dated April 22nd, 1907.

The switch and circuit breaker for high potential circnits to whichmy present invention is ad'apted, is an automatic apparatus or Inechanism -for opening or interruptin high potential circuits under any conditon'of overload or short circuit, and the switch or'circuit breakerin connection with which I use my present improvements;

is preferably of the type of' such devices wherein the opening or breaking, and -closingparts of the circuit are -contained in a tank, or tanks of oil, 'and in such manner that the opening or breaking of the circuit,

- ad'the closing thereof take place. within the body or bgdies of* oil as a highly non-conductive` liquid medium, contained in one, two, or more' of such tanks. y

- In ,the apparatus constituting my present the switch 'and circuit breaker is automatically opened when the current in the main circuthas become sufficientl hi h to excite one, two, or more so lenoi coi s forming art of thefmain circut, to an extentsu c1ent to.move' asoft iron coewithin each such solenoidcoil, or.

when the current in either ot the solenoid coils of the main circuit becomes e'xc'essive,

dueto'" a shortxcircuit taking' place. This mv met of' a 'softii'ron`='core operates a ci -enit 'loser of an-auxiliary circuit. At the' instant when this closing of the auXil-iary 'circit takes place, &solenoid coil 'in that movabl'e 'soft 'iron core within it, .causing that soft iron core to release a retainng- `catch engagingwith a pivoted lever against Specification of Letters Patent.

NELsoN KEL- Patented Oct. 4, 1910'.

Application filed July 29, 1908. Serial No. 446,490.

which a spiral sprin presses upward. This 'disengagement of t e catch. releasing the lever permits'the spiral spring to push said lever upward-upon its pivot, while the spiral spring 'on moving upward pulls the movable blades `of the high 'potential circuit breaker out of electrical contact with the fixed contact thereof, each pair of such contacts being mmers'ed in a-tank of oil, or the attendant may open the circuit breaker by closing theswitch' on 'the switch-board, thus energzing the opening solenoid coil.

In the auxiliary crcuit there are placed telltale lamps observable'by an attendant at the switchboard; which lanps may be re-- spectively green andred lamps, so that the attendant may always know whether the circuit breaker is opened or closed according.

to the color of the lamp which is illuminated by' the current nthe auxiliary circuit.

Whenever the attendant'requires or finds `it necessary to reclos'e the main cr cuit, he

moves the switch on the' switchboard into a position wherein current asses into the coil of another soenoid, whic instantl .that it is thus excted pulls downward a so -iron core therein whose upper end is connected pivotally to the lever With Whichthe catch operated by the opening solenoid en ages. By this operation'theouter end o spring on-the rod connecting -it to the mova le contact pieces on the switch 'is recompres'se'd, while the retaining catch at the same said pivoted lever is again lowered and the spiral time engages with the outer end of the lever `and holds the switch in operative relationship with the, main circuit and in readiness for the main circuit to be again broken in the event of 'sufiicient'rise of current'therein to operate the soft iron core, or 'cores within the solenoid,-orsolenoids, forming part of the main circui-t.

Upon the anhexed drawin gs Figure l, is a vertical sect-ion throu h a cell or division containing one of my igh potential circuit breakers, this section being drawn upon the line'a, a, of Figs. 2 and 3, viewed in the direction of the arrows X,`Figs. 2, and 3, showing the operative parts of the circuitbreaker inside the oil tank, the front of which is broken out, and also showing in end elevation the new operative parts for opening and closng the circuit breaker Situated upon the top of the cell. Fig. 2, is a lan corresponding to Fg. 1, a portion of t e'upper part of one of the concrete cells being broken out so of the main circuit whenever the currentas to expose iri plan one of the soats and its supports, for carrying the opening sprngs w ich operate to open 'the circuit breaken Fg. 3, is a front elevation of the cells containing the oil tanhs, and circut breakers,

andshowing the apparatus constitutingmy' 'present invention as fastened to the top of the .concrete cells. Fig.` 4, is a front elevation upon a larger scale, of thesolenod col and soft iron core for eflectmg the openng carried thereby exoeeds the limit of safety, or when the crcuit becomes short crcuted, the'. Erame for this part of the apparatus,

and'a rotary switch attached tothe frames' and 'showing the oil tank for said rotary* `'switch in vertical section taken upon" 'the line b, b,ofFig. 5. Fig.5,isa side 'elevation of the partswhereof Fig. 4, is a front elevation and showing the oil tank for the rotary switch in 'vertical section on the line c, a, of I Fig. 4. Fig. 6, is a plan corresponding to 'Fi 4. Fig. 7 is a vertical section upon an en arged ,scale, through the opening solenoid coil, the frame therefor, andconnected parts, some of which, including portions of the magneto-electrically operative core are shown in elevation, the par'ts in section being taken -upon the line e, e, of Fig. 6. Fig'. 8,

is a plan uponthe same enlarged scale as Figs. 4, to' 7 inclusive, the solenoid'coil, and ma fectmg the reclosing o the main circuit after it has been opened, either by reason of a short circuit, or a -rise of the current above 'the -limit of safe operation, or by; an attenda illustrating the arrangement of wiring and apparatus for completing the various elect'cal circuits' between 'the several operative ant. Fig. 9 is in part averticalsection taken upon the line?, f, of Fig.- 8, showing the fixed and`movab cal section, and partly in elevation, the outer portions of the" frame containing the sole-- noid coil, being shown in elevation. Fig. 10,

is a side elevaton, upon the'samescale as Fg. 4, of an auxlary automatic swtch,

showing the supportingbracket, and 'the oil tank for said switch, 'in vertical .sections -takent upon'the line g', g,` :of Fig. 11, and

showingalso part of one ofthe lever arms for tl'e main circuit breaker and part of one' v of the bearings for. the shaft thereof in side elevation; the counterweight portion of the said leverbeing omitted.-` Fig. 11, is a vertical section taken upon the; line h, h,-of Fig,

'10, showing the automatic switch in front elevation. Fig. '12, is a plan corresponding to Fig. 10. Fig. 13, is a side elevation of the overload release switch showing the cover for same n vertical section. Fi'g 14, is a plan' corresponding to Fig. 13, but without' showing the. cover. Fig. 15, is a diagram arts of my I improved switch and circuit reaker. v

eto-electrically' o erative core' for 'ef-- e cores partly in verti-.

In the construction of my improved switch and circuit breaker, 1"prefer to mount the. switches for the high potential circuits, in sets of three, an -operative simultaneously by 'one set of electricallyoperated opening and closing devices', this arrangement being illustrated in Figs. 1, 2', 3, and 15, wherein isa box .1, preferably constructed of concrete, containing cells, 2, 3, and 4. Withn each of the cells 2, 3, and 4, is a tank '5, for

containing oil, wherein the -high'potential circuit breaker is immersed; The 'circuit breaker which I prefer to useis of the construction 1I1 respect of which Letters Patent- `of the United States, No. 874,(501, have been .granted to me, and 'which circuit breakers i i a're supported, within each of the tanks 5, respectively, `Near the bottom of each tank 5,- is a' beam of Wood 7, to which are attached the porcelain insulators 8, 8, carrying the stationary contact poles 9, 9, `with one of each ofwhich each of the switch arms 10, 10,'

is adapted -to engage so as toinsure good electrical connection. Pivotally attached at one ,end to a ciainp 11, supported upon another porcelain 'insulator 12, midway between the ' insulators 8, 8, are links .13, 13,

which are oppositely; pivoted to the switch arms 10, 10. The adjaceiit ends of the switch arms 10, 10, are electrically connected by a cable 18, and pvoted to 'a' m'eta-llicconnection' 14, which in turn is connected to a wooden rod 15, which pas'ses through an insulator 16, supported -upon the' marble or slate top 17', of the tank 5. The said wooden rod 15, is capped by a porcelain insulator 19, which in turn is attached to a metallc .rod 20, which passes upward through an opening 21,in the topofthe cell. Embedded in the walls of the cells 2, 3, and 4, Figs. 231

and 3, and extending therefrom into the@` cells, are short straps of metal 22, constitut ing brackets upon which the ends of the bars 23, constituting the spring seats rest. These bars 23, are attached'to the 'metallic straps 22, by bolts 24, and by unscrewingthe nuts upon the'bolts 24," and taking out the bolts 24, the'bars23, are removable.

'The upper end of each of the r0ds20, is, i i

pivot-ally attached to one end of a 'lever 25; and the several levers 25, are rigidly mountr, ed upon a 'common shaft`26, beyond ,which they are prolonged for a, short distance and provided with counterweights 27. A :bar of metal 28, extends across the ends of the eounterweights 27, and is Secured thereto by bolts 29. e

ings 30, are preferably provided' with a common base 32, Secured' to the walls of the con` crete cells 1,' by means of anchor or hold down bolts 33., i

Beneath the central lever arm 25, and attached to the base 32, by bolts 34, is a m`etal 'The shaft 26, is rotatably supported in bearings 30, 'having caps 31, and said bear-,3 2-5 frame 35, adapted to contain a solenoid coil g 36, shown in detail in Figs. 8, and 9. In the preferred Construction, this solenoid coil 36, is wound upon a spool or bobbin consisting of disk-shaped ends 37, of hard fiber, rubber, or analogous ..materiah centrally' connected by a thin tube 38, of non magnetic metal such as brass, the exterior of the tube 4 38', being wound first with insulating mateis a-stationary core 42, of soft iron. I The core 42, extends to a position about midway of.

4 ever arm 25, as .shown.

rial 39, such as cambric saturated with shel- .lac Varnish next with a number of layers of insulated wire- 36, composing the coil itself,

and finally with a layer of hard twine 40.

Passing centrally through 'the base of the frame- 35, and Secured thereto by a pin 41,

the height of the solenoid coil 36, and is preferably constructedlwith a conical cavity 43, in the' inner end thereof.- Within the tube38, and surrounding the stationary core '42, is another thin tube 44, of brass or similar metal, extending inwardly through a hole in the 1 pper part of the frame 35, and fitting' closely there'n.

Wthin 'the tube 44 and slida ble therein, is

a in'ovable core 45, of soft iron having a lower conical end ,46, adapted to fit into the conical cavity 43, in the st'ationary core 42.

This movable` core 45, is internally screwthreaded at its upper'endto receive and re tain therein an adjustable-eye-bolt having a screw-threadportion 47, provided with a am-nut 48, and having a head 49, with a ole 50, therein, whereby it is -pivoted by the ivot 'pin 51, (Figs. 1,an'd`2,) to the central Adjacent to the frame smaller iframe 53, adap'ted to contain asolenoid coil of insilated wire 54, wound upon a spool formed of a central tube'jof brass 55,

as shown in the enlar ed section Fig, 7 fit- 'tin at each end into 'sks 56', of fiber, hard rub er, or analogous material. This sole- 'noid coil is further` insu-lated by shellac soaked cambric wrappin 55 or equivalent wrap ing wound upon -t e tube 55, and ex teriory covered'by a wrapping of hard twine 56% Through 'a centralhole in the top of the frame 53, there extends inwardly a 'hollow cylindrical stationary core 57, ofsoft irona reduced portion 573.', upon which-i havn I is'fitted 'a thin tube of brass 58, which passe .throu h. the base of the frame 53, and forms agni e 'for a movable core 59, of soft' iron having a stern 60, of brass, screwed thereinto,

and a Washer 61, of'brass, separating the stationary hollow core 57, from the inovable solid core'59.. The core 57, is Secured in the frame 53, by a set' screw '62,"or it may be otherwise equivalently secured therein, and the stern 60, is provided with a hole 62% for the .pin 63, shown at'Figs. 4, and 6.

35, and similarly attached to the base 32, by bolts 52, is a.

To the upper part of the f-rame 53, is attached by cap screws 54, a plate 543, of

fiber or other insulating material, and depending therefrom, and attaehed thereto by screws 54 is-a' U-shaped metallicframe 54 'and attached to the said frame 545 by a rivet 54 is a metallic bracket 54?, 'into' the upper' part of which, and Secured bythe jam-mit 65, is sc'rewed a stationary axle 66,

for carrying a` rotatable roller `67'consti-noted of insulatiig material, provided .with a'br'ass contact piece 68 set into, and

in 4, and 5, piv0ted thereon," and engaging the teeth of the ratchet wheel-71.

The opposite end of the lever 72, has a slot 74, therein, throu `hwhich passes-the pivot.

.pin 63 upon the s otted lower end of a stern 60 which extends. upwardly through the' late' 542 and is connected by. a pin 60 to a ar 60, which is oppositely connected to the stern. 60, of the movable' core 59, by the pin 63. 4

To the plate 54 are' attached internally threaded blocks 75, 7 5 75, 7 5, which are also externally threaded at. their lower ends whereby they are Secured to the said plate 54 by nuts 7 6 and within the blocks 75,

75 75 and 75, are threaded studsl`76,--76

76, and 76 provided with jamnuts77,

and 77, andothernuts- 78, 79, 80, and 81, for attaching wires thereto. At the lower ends of the said studs 76, 76, areattached by screws 82 82 or otherwise attached' thereto, laminated contact springs 82, 82,

and to thelower ends of the studs 76, 76,

are attached similar contact springs 82, 82% by screws 82 82 The lower ends ofthe contact s ring's 82, 82% 82, and 82, make contact wit' the surface of the roller 67, and' are so Situated that 'twoof said springs -82, and 82 are simultaneously in contact with any one of the metallic contact pieces 68, when the remaining twosprings 82, and 82, are simultaneously in contact with one of the insulating portions ofthe said roller 67, andconversely, when the two s'prings 82, and 82%, are in contact with 'one'of the insulating portions of the roller 67, the other two sprngs 82 and.

82 are in contact with one of the contact ,I "Ert The teeth upoi the ratchet wheel 71, are" pieces 68.

numerically equal to the sum of the metallic and successive Jupward strokes of the stern 60, by moving the lever 72, with attached -contacts 68, and the 'spaces between same, v

pawl 73, rotate the roller 67 so that contact is made by, the springs 82, and 82 alternately with one of the `contacts 68, and the i insulating portion of the roller 67, 'and the i the r lar 85, having a lower threaded portion 86,

springs 82, and'82, alternate with the said springs 82, and 82, in making such Contacts 'in the above described 'mannen Surroundin the complete rotary 'switch is a .tenk 83, 0 thin metal for containing oil wherein the switch. isimmersed, the said tank 83, being Secured to the frame 53, by screws 84:.

U n-the 'base 32, Fig. 1, and adjacent to ame 53, there is mounted a metal pilprovided with a jam-nut 87, for securing vertical adjustment of the pillar 85, upon the base 3 At the upper end of the pillar 85, and carried` upon a pivot 88, is abell crank lever havingfaxvertical arm 89, provided with a detent catch 90, and having ahorizontal arin '91, adpted to be struck bythe stern 60, of ,the movable core 59, within the solenoid' coil 54:. i

Bearing upon the arm 89, of the bell `crank lever, is a spring 92, attached to the pillar ,85, by screws 93. The bell crank arm 89, passes through avslot 9.4,in the central lever 'arm 25, and engages with a retaining plate 95, attached to the upper face of the 'lever 25, by screws 96, when the said lever 25, is

in itslowest position, which is that position wherein itisshown in Fig. 1 andcer- -responding with that of its`center line e',

Th s position eorresponds with the closed position of the high potential switch within the tenk 5, as also shown in Fig. 1.

Attached to the'base' 32, and adjacent to the pillar 85, is a vertical metallic plate 97,' Figs. 1, and 2, to which is attached a plate 98, of fiber 'or equivalent insulating material which carries spring contact pieces 99, 100, 101, and-102, securedto ,this plate by screws 103. i

Above the conc rete cell3, there is fastened..

upon the rod 20, by the bolt 104, a cla'np 105, having a fan-shaped' projection 106, for electrically connecting the springs 101, and

::1592, :inthe lowest position ofthe'said rod and for' similarly connectingthe: springs .99, and 100,`in the highest positioi of the rod 20; the clamp 105, being insulatedjron the rod 20, by a band 106 offiberpr analogous' nulating material. i

Upon the spring seat 23, through-which the rod 20, passes 1oo`sely,-a` helicall spring 107, rests, `this spring' pressing up'wardly against a set' collarl 108, Secured.- by a-set screw. 109,' to the rod 20.

At the lower part of one of the lever arms 25, there is ametallicsocket 111, pivoted upon 'a pin 110, Figs. '10,' and 11, which is screwed-into the said arm 25, and ther'is.

slidably fitted a metallic rod 112, having a groove 113, therein, whereinto there projects a pin or key 11 1, for the urpose of pro-,J viding vertical adjustment or the rod 112, but preventing said rod 112, from' turning within the' SOClIGt 111. When the rod 112, is properly adjusted vertically it is clamped within the said s'oc'ket 111, by aset screw 115. Upon the hearing 30,- ad acent to the le- V ver arm 25, to which the socket 111, is pivoted, netal casting 116, is attached by bolts 117; and beneath the casting 116,' and attached thereto by screws`118, is' a block 119, of fiber or equivalent insulating material.

'Attached to this block 119, are two pairs of contact clips 120, and 121, respectively, secured thereto by screws 122,' and 123, 'said screws being-provided with mite-124, 125,

terminal wires 128, and of low tension ci'rcuit", ;which pass, through insulators 130, which in turn pass through and are Secured to the casting 116. A third terminal wire 131; is connected by nuts 132, and 133, to

q 126, and 127 for attaching the insulated a screw'131, which forms a pivot upon the t opposite side of the'insulaiting block 119,

for one end'of a metallic contact lever 135,

whoseopposite end is capable of'engagement by one or otherbf the'projec'ting portions 136, 137, of 'a fiber block 138, connectedby pins 139, to the lowerend of the rod 112, Attached at one end by the pin 1 10, t'o the contactlever 135, and"at the other end t0 the' fiber biock 119, by a bolt 141, and nut 142, is a. -helical spring 143; and inclosin -the entire switch mechahisn just describe is a tank 1 14, of thin metal Secured to the casting. 113, bybolts 145,- and nuts 146; the said tenk containing oil wherein the operative parts of the'sad switch are immersed. Iiij Fig. 1, the part's of the high potential - os circuit 147, 148, connected tothe fixed polesu 9, of theoircuit breaker. are shown as ,passing outthrough insulators 149, in 'the' cover 17, of'the tank 5; and one of such parts 148, is'woundas a solenoid coil 150, within which is supporteda glass or porcelain tube 151,

- with-in;, -whi ch is a. soft iron laminated "core t not hown on the drawingsbutofthe same cons'truction as the soft ironcore shown and desCr'b'd .i my `-application fo 'Letters Patent serial Nunber 370,()91, filed April 22,`1907, a n`d ttach'edto the laminated-core is a rod-152, of 'wood or other insulating material, to the ipper' end of which is attached 'an externally threadedtubeof brass 153,.

Fgs. 13, and 14, and which pa's'ses upward` through a block 154, of fiber or 'other msulating materialhflwhich has holes l, .therein 4 for screws or' bolts wherjehy said block is attached to the upper part of the concrete cell 3. Above the-vinsulating block 154 .the tube 153, has. placed thereon, a disk' 156 of bronze, the position of which' is adjustable upon 'the said tube 153, by means of milledthurnb nuts'157.` v

nuts 161, for attaching the wires f or the com- `pletion of the low tension oircut of WlllCh 5 ner that the bronze disk 156, will make contact with both of them simultaneously when the said disk' is raised vertically. The screws,

158,. and 158", are provided with nuts 160, for clamping the clips in place, and also with this switch forms a par-t; The clips 159, are

further provided wth dowel pins 162, for

retaining said clips in their proper position.

The parts just described form' the overload filled with wax plugs double throw lever" 171.

the 001136,

release switch, and are inclosed by a cover 163, of thin metal, attached-to the block 154, by screws 164. The holes wherein the screws 158, and" 158, are countersunk are 165, after the said screws 158, and 158, are in position.

In the diagram Fig. 15, are 'shown wires, sometimes designated bus bars 166, and

167, for the low potential circuit', and the' source of current is indicated by ,a battery 168. connected to one 'of these 'wires 166, is a wire 169,- whose opposite end is connected to one of the terminals 170, of a single pole double throw switch ne of the poles 172, of this switch is connected by a wire 173, to ne of the contact springs 82, of the auxiliary rotary switch. From .the similar contact spring 82, of, this' rotary switch there extends a wire .174, oppositely con 'nected to one. of the terminals 175, of the solenoid coil 36, for eflecting the closing of the high otential switch. Another, wire 129, leads om-the opposite terminal 176, of

the automatic switch Figs. 10,and 11. The

w terminal constituted by the bolt 134, whereon the lever 135, is pivotd, is connected by the ,wire 131, to the oppositewire or bus bar 167, of the low tension circuit. The lower contact clips 120, of the automatic switch, are connected by the wire 128, to one of .the terminals 177, of the detent rele'asing sole noid coil 54, for allowing of the openingo'f the high otential switch. The opposite ole 178, of the solenoid coil 54', is connected y a wire 179, to thepole 180, upon the o eratofs switch board. A wire 181, lea 's from the terminal 17 8, of the slenoid coil -54, to the several terminals 158, of the overload release switches, which are connected in parallel as shown in Fig. 15; and whose several opposite terminals 158 are connected 0 by a wire 182, to the bus bar 166. An-

" other wire 183, connects the bus bar 166,

to a wire 184', in the path of which wire is introduced a light 185, of one color, such. as green, the said wire 184, being thereafter connected to the contact cli'p 100. The contac't clip 102, is connected by a wire 185, to

159, 'having their upper ends rovided with a' to'the upper contact clip 121, of

the wire 183, and into its circuit is introduced a light 186, of another color, such as opened, the attendant moves the switch blade v 171, on its pivotal connection 170, in the direction of the' arrow X', Fig". 15, and into the position'wherein the said switch blade 171, makes contact with the fixed pole 172, upon the operators switch board; the low tension current then flows from the battery 168, through the wire or bus bar 166, the wire 169, the switch blade 171, the contact `172, the wire 173, the contact spring 82, the

;contact plate 68, upon the rotary switch roller 67,`constructed of fiber or equivalent insulating material, the opposite contact spring 82', the wire 174, the closing solenoid v coil 36, the wire 129, the contact clips 121, the switch blade 135, the wire 131', and the b,us bar 167, returning into the battery 168; The solenoid coil 36, being thus energized by the passage of the current therethrough, the movable core 45, operated thereby is' attracted downwardly therein, and by meansof itspivotal connection 51,`to the lever arm 25, draws the said lever arm downward into the position shown in Fig. 1, and partly 'in' dotted lines in Fig. 15, the corresponding closed position of the high potential switch being also indicated in dotted lines in said Fig. 15, in which position it is automatically locked by the detent hook 90,

- engaging with the locking plate 95, by the action of the spring 92. The several lever arms 25,'being rigidl'y connected to the shaft 26, and by the bar 28, partake of the same motion 'as that of the central arm' 25, and their several pivotally connected .Fods 120, are likewise moved downward, compressing the several helical'springs 107, between the set collars 108, attached to the said rods 20- and the stationary spring seats` 23, attache' to the wa'lls of the cells2, 3,'and 4. e

The downward motion of each of the me 7 tallic rods 20, is conveyed to itscorresponding attached wooden`rod'15, and metallic connection 14, and the ends of the votally co nnected switch arms or blades 1 by the spreading action of the links 13, as' the rods 20, descend, are caused to move laterally into the position wherein they. make electrical contact with the stationary ole pieces 9, and thus close the high poteitaFcircuit,

In order that the low tension current may be caused to cease to flow-through the closing solenoid' coil 36, after the high potential switch is closed, and the detent 90," Figs. shown in Fi 1 ;thecircuit through the coil 36, is opene 'by means of the rod 112, pivoted upon'the' outer lover arm 25, which rod 112,"pa.rt`aking`of the, downward motion of the saidlever arm 25,` carries with it the atthe levers 25, locked by tached fiber block 138. The upper project-- ing part 137, of the said block 138,- during the latter part of such downward movement,

strikes the blade 135, of the auxiliary 'switch, thus releasing said blade'135, fromcontctwith the Contacts 121,; and thereby opening the aforementioned circuit'at-this oint. As soon as the automatic-switch bla disengaged front the contact' 121', the' said blade 135,

helical spring` 143, which as aforesaid, is .at

all times in a state of tension. The 'blade arrow X .into the position wherein the blade 171,- connects the terminals 170, and

180; which is that shown in. dotted lines in Fig. 15. The low tension current then flows :from the'battery 168,' through the bus bar 166, the 'wire 169, theswitch blade' 171, 'the 'wire179, theopenn'g solenoid coil 54:, the

-wire ;128, the contact"c1ips:120, the auxiliary switchblade 135'the wire '131, 'and the bus l 167, to the opposite pole of the bat'tery '90,'inthe direction of thearrow X Fig, 1,

i out' co11ar'108, one on each rod 120, and move the said rods 20, together with the lover-arms 25, in the directionof .the arrow Xt, Fi ;1,

and into the position whereinthe center nes z, z, of the said level' arms 25, coincde with the center hnes j, j, Fig. 1, and' as shownin full lines in Fig. 15 `The`npward`move' ment of the rods 20, byineens of the connected parts, .causes the `high potential switch withdrawn latera'lly from I po1es9, thereof.` The 'sole: nod col 54, 'having performed its functionby releasing the detent 90, itis immediately s blades 10, 'to .be contact with the there after denergized by `the openingfof V the circuit therethrough by 'means of' the rod 1, and 2, in the position carries the auxliary switch :trio current in the p I all of the solenoid coils 150, being therby e :135, is

is' throw-n sharply into engagement .bring the attached with the c'ontacts 120,` by the action ot'the the swtchboard in the direction of the tmi switch 'in the manner previously scr i t 4 I During th a ag of the urr t: fWhenever the attendant closes the high therethrough', .the openingsolenoid coil 54, I is energized, thereby attracting upwardly e thereiito, 'the movable core 59, causingyits -attached' stem 60,' to strike the bell-crank Iever arm, 91, and thereby moving the detentj of engagement with the lock plate 95. The ,compressed helical springs 107,- upon the several rods 20, now react against the andwll remain open so long as such main' 112, pivotally connected to the outer lover arm 25, as shown at Figs. 10, and 11, the upward movement of which arm raises the said rod 112, with its connected insulating block 138, thelower projecting part 136, of which, blade 135, out of' engagement with the contact clips 120, and

into engagement with the other contactclips 121, shown 'in dotted linos in'Figs. 10,- 'a'nd 11.

When the circuit breaker is opened autocircuit rising byrason of ov'eroad,-or by the short circuitin'gof :the elecsaid circuit, one or two, 'or

excited sufciently to raise the softfliron corer within" the glass tube-'151, and'the wooden rod 152, attached to"-thesaid soft iron' core being thereby raised' so' as' to metallic diskglfi, into with the clips 159', low tenflowsromthe'battery 168,

electrical contact 'sioncurrent then 'thron h the bus bar 166, the wire 182,

the clips 159, the disk 156, the opposite clip 159, the wire 181, the solenoid coil' 54,-the wire`128,`the clips 120, the switch blade 135, and the wire 131,.to the fbus `bar '167, and thence toth'e oposite polelof the bat-` tery 168. During t e' passage 'of-the cur- "rent`through the solenoid coil 54:, the said solenoid ,co'i being thereby excited attracts the movable -sot iron core 59, upwardly thereinto'nd its stem 60, strikin thebell ank-:arm 91, the detent 90, is isengaged fromcofitact with'the looking piate 95, upon the lover-25, which together with the other levei s 25 isthen forced upward by the. spring 107, thereby opening the high potnbed.

gtential ;switch after the said switch has' en* opened either by an overload, or by 'a short circuit in the main circuit, it` will thereafte'r be opened by the action of the 'solen'oid coil 150, as'hereinbefore described, whenever the current' in the main circut again reaches Saidi mam circu t becomes short-crcuted,

crcnit isshort-circuited, or over-loaded, and

this, notwithstanding the fact that the attendant ma not have-' removed the switch 'blade 171, rom contact with'the pole 172, upon the switchboard,*which"s the position wher-ein ,it is laced ,for closing the main switch upon the main' circuitby the action, of the automatic mechanism.

The action of the auxihary rotaryoil an'excess of current, or the switch is -in detail as 'follows: The roller upon the first upward movement of` i blade 106 the soft iron movable core 59, within the solenoid coil 54, is rotated by the pawl,

73, pivoted'u on the lever`72, by the upward movement o the stern 60, and connecting bar 60,so that the contact springs 82, and

82 for completing the circuit` through the solenoid coil 36, are caused to rest upon one of the insulating portions of the said roller 67 -`thereby openingthe closing coil circuit at this point. At the same time the contact springs 82% and 82% are cused by the same rotation of the roller 67 to rest upon one of the contactpieces 68, 11pon the said roller 67 thus closing the open ng coil circuit at' this point.

. Whenthe operator .des'ires to again closethe high potential switch, he moves the switch lever 171, in the direction 'of the arrow X Fig. 15, and low`t'ension current then fiows from the battery 168, through the bus bar 166, the wire 169, the switch ,lever 171, thewire 179, the solenoid coil 54, the wire `188, the contact spring 82", the contact piece 68, the contact spring 82' the wire 189, and the wire 131, to the opposite bus bar 167,vand thence to the op'posite pole of the batter 168. The resultng excitation of the -so enoid coil 54, causes the movable core 59, .to make another upward stroke whereby the roller 67 is again rotated so as to bring the springs 82, and 82 of the opening coil circuit in contact with one of the insula-tingisurfaces of the roller 67, and so as to brin the prings 82, and82,

of the closin' 'coi circuit again in contact with 'one of t e contacts 68, uponthe roller '67, thereby opening the opening coil circuit, and closing the closing coil circuit at this point. v

In order that the attendantmay be able to observe whether the hi h potential, switch be open or closed, the pi ot lights185, and

186, are provided, the green light 185, in'- dicating thatthe switch is open, and the red light 186, indicating that the switch is' closed.

When the blade 106, upon the clamp '105, which is attached to the rod 20 makes con tact with the- clips 99, and 100 ;jwhi ch occurs when the high potential switch is open, .cur-

rent flows from the battery 168, through the bus bar 166, the wire 183, the wire 184, the contact 100,'the blade 106, the contact 99, the wire 131, and the busbar 167, to the opposite pole of the battery 168, illurninating the green lamp 185, in its passage therethrough.- i

When thehigh potential switch is closed,-

the blade 106, connects the clips 101, and 109;

and low potential current flows from. the'.

battery 168, through the bus bar 166, the

wire 183, the wire 185 the 'clip '102,' the z the oppositeclip. 101, the wire, 131, the bus bar 167, and thence to the.

opposite pole of thebattery 168, and in its tiona ty 'bri non-con ucting liftin mersed in oil.

passage illuminating the red lamp 186, and thus indicat-ing to the Vattendant that the high potential switch is closed.

I claim as ny invention.

1. In a high potential switch and circuit breaker, wherein the parts for opening and closing the circuit are operated from a rotatable shaft, said rotatable shaft carrying a counterweighted lever rigidly keyed thereon, a retaining catch for holding said lever and shaft in the closed position of the crp cuit breaker, a solenoid coil and soft iron core :Eqr-releasing said retaining catch whereby compressed springs react to open the high potential'circuit, another solenoid coil and soft iron core connected to` said lever Operatingto close the circuit, both of said solenoid coils being excited by a circuit separate "and distinct from the high potential circuit to be opened or closed, a rod attached to the lever on the; rotatabl'e shaft, a spring upon said .'od, said spring being compressed between a shoulder on said rod and a sta- V e piece, said rod` passing through' said ridge piece, and connected in;

' ulatedly to the open ng and closing arms of the circuit breaker, said spring Operating to open the circuit when the openin solenoid releases the retaining catch ho ding the counterweighted 1ever,-a rtion of the main circuit wound as a solenoid coil, which when the current in the main circuit becomes too high, or the main circuit becomes short circuit'ed o erates a soft iron core carrying a rod with contact piece for closing the circuit of the opening solenoid coil, a rotating switch in the sole noid circuits operated by the' soft iron core of the opening solenoid, an automatic switch in the solenoid circuits operatcd by the counterweighted lever on the rotat-able shaft, saidz'solenoid .coils being connected to 'a double-throw manually operated switch on the switchboard, the opening and closing members of the circuit brea er being in 2. In a high potential switch and circuit breaker, whereinthe parts for 'opening and closing the' circuit are operated from a rotatable shaft, said rotatable shaft carrying a counterweighted lever rigidly keyedthereo`n, a retaining catch for holding said lever and shaft in the closedposition of the cirenit" breaker, a solenoid coil and softironcorefor re'leasng saidretaining catch whereby' compressed springs react to open the high potential circuit, another solenoid coil and-soft iron core connected to said lever Operating to close'the circuit, both of said- I solenoid coils being excited byacircuiteseparate anddistinct `from the high potential circuit to be opened or closed, a rod attached to the lever on the rotatable shaft, a sprin upon said rod, said spring being compresse between a shoulder on said rod and a sta- V I tonary bridge piece crcuit wo'und as a solenod coil, which when.`

'said -rod passing through said bridge piece, sulatedl to the opening and' clo'sng arms of the ('cuit breaker,' said spring Operating toopen the circut when the 'opening solenoid releases the retanng catch holding the s oounterweighted level', a. 'portion of the main the current in the main crcut becomes too h h, or the mam crcut non-con uo'ting liftng rod with conta'ot pee for-cl osng the ercuit of the opening 'nod crcuits operated by the soft iron core of the opening solenoid, aneutomatic switch in 'the solenoid circuits ope rated by the and connected in:

becomes short air-- outed, .o erates a soft u on-core carrymg a' counterweghted level' on the rotatabe shefit said solenoid cols being connected to double-throw manuely operated switch on the swtchboard, the' opening and oosng members of'the crcut breake' being imme sed nol, said apprats having a ciret` operated from teese-parate e'eut Withtelltale -lamps theren.

In testimony whereof, I have hereunto set my hand and seal--at the city of Los Angeles aforesajd, in the presence of two subscrbng witnesses. A

JOsEPH NELSQN ;mun [L 3.1

witnesses: I

ST. JOHN DA J. D. COR

Images