US1031789A - Circuit-interrupter. - Google Patents

Description

P. W. HARRIS. CIRCUIT INT'ERRUPTER. APPLICATION FILED MAR. 9, 1908.

fg gg gg Patented July 9, 1912.

P. W. HARRIS.

GIEOUIT INTERRUPTER.

APPLICATION FILED MAR. 9,1908.

LQ??? l igga Patented Ju1y 9,' 1912.

3 SHEETSSHEET 2. Y Y Y W P. .W. HARRIS.

01mm INTERRUPTER.

v APPLICATION FILED MAR, 9, 190B. Lgfimflfi Patented July 9,1912.

3 SHEETS-SHEET 3 WITNESSES.

r I dMVMM k l a F l i 'WHLKIINSBURG, PENNSYLVANIA, ASSIQNQE, Eli MESH?! ASEIGIW as, so

aannracrnnrnu contracts, or near ooiaroaaniou or ,rnunsrnvasrta.

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Specification of Letters Patent.

Patented July 9, 1159212,

Application filed "March 9, 190%. Sria1 il'o4f0,063,

mom may concern:

. 'lrnown that l, l ono W. HARRIS, a citizen is? the United States, and a resident or Wilkinsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useiful improvement in. Circuitln'terrupters, of which the following is a specification, 4

" lily-invention relates to circuit interrupters, and it has for its object-to provide a device oi this character that shall be rela tively simple and inexpensive in construction and adapted for use with very highvoltage circuits and .for installation in the open air. f

In the prior art, interrupters foixhighvoltage poly/phase circuits could notbe safely and suc 'essiully operatedin the open a'iruiider e weather conditions, by reason er, the-tendency oi"; the electric current's'to creep over Wet surfaces. it has been my aim to design a circuit breaker for accomplishing this result without sacrificing either simplicity and economy in construction or sensitiveness and efiiciency in opera tion.

According to my present. invention, 1 provide a plurality of independent inelosing', casings in which the main operating mechahisn'i and a number of groups of co operating stationary and l'uovable contact members severally disposed. The casings are Weather-proof andareseparated by material distances, the only cohnection be tween them, aside from eommonsupporting structures, being lormed by pipe sections through which an actuating rod extends. The lower parts of the casings are removable are made in the form of to contain a suitable insulating fluid.

Figure. l of the accompanying drawings is a side elevation of a portion of a circuit interrupter constructed in accordance with my invention, the inclosing casings being shown in section to disclose the operating parts. Fig. 2 1s a sectional elevation throu h one of the casin s of lfii l and Snis an outline view of the assembled circuit interrupter which brings out more clearly the relation between the different groups of cooperating contact members.

Referring to the drawings, the device here illustrated comprises a stationary frame 1,

tactmember and such portion of the 0' er at-ing mechanism 9 as is directly associated with said movable member. Since's'i'nl'ilar parts are found in each casing-only one group \vill be described in detail by refercnce to Figsfiland 22s the drau ings.

The lcads lO'and llare directly connected to one phase of the circuit controlled by the by a cover mom breaker anl are supported her 12' from which they are carefully in-'- sulated by means of bushings 13. The bushings 13 may be constructed in any suitable manner and may support, at their lower-ex tren'1ities,the' stationary contact members 6 and 7. In order that, the line conductors, which are joined to the outer extremities of leads 10 and 11,1rnay be widely separated from each other, the leads are supported obliquely, their lower extremities being brought relatively close together with safety since, at this point, they are separated by the insulating fluid contained in the tank. The portions of the insulating bushings which are Without the tanks are protected from the Weather by a plurality of'insulathug bells or flanges 1'4.

The stationary contact members malcclmtt joints with the movable contact members, ut the latter are provided with terminal pieces 28 which are resiliently connected to the body portions of said membcrs the elec t-rical connection between the two parts beinn; improved by a flexible shunt 29. The terminal pieces 38 are permitted to'mo've only within predetermined limits along the center lines o:E -the stationary terminals. Since these lines are oblique as above in dicated, a sliding-contact is effected between theengaging surfaces as the movable contact members engage the stationary members or are separated from them.

The operating mechanism 9 comprises a main operating lever 30 which may beactuated by haridor otherwise, a rod 32 which intercoimccts the operating levers for the several groups of contact members, and a Lei crank -j;:;ver Si 'wilich' is 132- t en the lever and the amnesia v m1 man-h 0f file mew-R5019 me' 39, 3 is uonnecfid to the Iowa? e tremisy of to tfis nperating lever 30 in raismg the mavabl enutmai; memhera 531m engagammt "with film stationary memhsrs.

arts; cmrespohing to thaw glndicateai by cncca characters 33, 3a, 38 3? and 3.4

fmm in m ih m? -11,-- s icsi'z'ng casings A and a; and. the crpml; Raver 1s 10'- cute 1m casing 2. The red "*2, which connects 31 3: ctmmk Lever 31 t ism: bell mm a him g 1-. H A .Jic iii'l. LEE/(5L 5 .-.S prwaw; $1 6111 nib. weather pzpe ssctwns 4-1, 49, and i3 121 Una mam miam bail wank Sli is pmvidiad with a zroibzr which may be miga mi by hick, 55 when the, eimui; imemupmy is cfinsad. This his forms a p 0f ?3@1 l crank level the position 01? which can mulled manualliy 53/ a level" 49, by the animal 01. grzwity upan :1 Weight 2'3, 02 by magma? winciing 48. magnet Windip; 28 recmves its energy from an mmiha y cil'cuifi which be supplied fmm' any suitable smu'cz wlmn the main circuit current 31208665 'a pz'eieieymincd amount.

.flsumin' that the movable contact 1112mdlsen agecl from the smui onm'y zmmbers, tha' 01201135; interrupter may as aiesad by a downwmal movement 0? the uperating lever This aciiozz fliOfllKfiS a iotative movement a; U a bail wank lever through an angle 01 snbshmfiialfly Q0 and imparts a ionglmiiimai mevenwnia $0 the red. 32. This motion is; ti'fmflmiflfii i to the 'iertical rod-Ls 02c ahnfis by me le'mcs 37 and It "will be unders'mmi that sfii'ueim'igfi mofilfrfications may be efi'eet-sd within "51m $80139 06 my invention, and. I ciesire such tat-ions shall be impase are iixii in ii-he appended claims. claim as my inwnbion:

The bell. crank Zea ea an iniermei i. uircui a interrupt er, the with phnahtjj. 0i mtcrsimn grmips 0i sizmonary and momq. c

inclosing sayings "3301 the re members,

in. a ups operzaiing mechzmlsm a: hm we cnsmgs, of:

tivs g'r'aups and epalating; mechmnismg 10 5-55 sated wlfinn the casings, at a. mam a. tum- 1 mecbumsm comprlsmg an mependwt 11 aiming casing, a bell crank levers, Eat? the for and a tLE}DE)iDg &9GYLBS, locatgd,

2e casing, operating and} reiemsa hm u @endinp; ihwugh Gm walis 0f and rad that (zonnec'is the ope. anisms 2'10 the bell crank Keven 3. 131' CiTCEli'i) interrupter, 5w *iicnwith plumiity 91E gangs of .4 212163 mnvazble 0011mm members, mecimnisms and inclosing casings 1 lefipscifive} gmups, am intercmm men. 4 the several operating marina a main actuating means for effectin simulizmasgzs as 011 0: 5 the mgemting mm. anisms, an inc-Rependenfi; inc iesing therefer and pipe or tube S CMOES 5 4 t missing casingsflnrough whisk means npemzes. 43-. 22. cimui; mterrupter, the c tion with a pim'alit z of groups 0i stations nwmbie mmabt membgm, in'clssing c ings for mspeciaiwa groups, and. OFQLH'Q' 131g Messier within the 32531? and mprisin bell wank iemrs connecting Hm ,I a main actuating 111903 2111523111, 2m indepemiant inciesing cum '1 thewe'fer, subsitan'' any hwimntai r08 connecia the mac-ha 15m. veil crank levers, and, 111m @1' tube Sm inkercsnnecting 0perates.

in testlmmny' whemei, 1 have he" subscmbeci my name bins 215%;

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