US925994A - Oil-switch. - Google Patents

Description

2 SHEETS-SHEET 1.

Patented June 22, 1909.

OIL SWITCH.

APPLIOATION FILED AUG. 30,1905.

H. W. CHENEY.

Inwnor:

flerer' W Cherzm b & Harri/ w w n W H. W. CHENEY.

OIL SWITCH.

APPLICATION FILED AUG. 30,1905.

925'5994 Patented June22,1909.

2 SHEETS-SHEET 2.

Kerfier/ W Clzerzay- I 10 jbrealiers and 2 thestationary contacts ermine nTEN'r 013 RICE. F

HERBERT W. CHENEY, OF NORWOOD, OHIO, ASSIGNOR TO THE BULLOCK ELECTRIQMANU- FAOTURING COMPANY, A CORPORATION OF OHIO.

OIL-SWITCH.

No. ceases.

To all whom it may concern:

Be it knownthat I, HERBERT W. CHENEY,

citi en o the United States, residing at N orcertain new and useful Improvements in Oil-Switches, of which the following is a full, clear, and exact specifica- .tion.

invention relates to switches or circuit circuitsof hig voltage.

v nearly a! previous construction of oil SWLltChl-;S, 01the1 there is a single stationary contact and a single movable contact adapted to be swung toward and away from the stationary contact as in the ordinary form of single break switch, or there are two stationafiy contacts and a movable, brid ing contact a apted to be moved toward am? away. front by a reciprocating or rotary movement, as in the commonforms of doublebreak switch. In the latter type of switch, as the circuit is broken at two points, the are at each contact is much re' 2 duced. N ow the object of my inventionlis to provide an im roved single-break switch in which the spar ing at the contacts will be reduced to a minimum. 1 In carrying out my invention, I provide a 3 switch with a pair of contacts, both of which are movable, so that when the circuit is broken the contacts will be quickly separated More specifically considered my invention consists of a multiple switch composed of an 3 desired number of single pole switches,'eac

having a pair of movable contacts mounted in supports for oscillatory movement toward and away from each other, the contact suports of all the switches being engaged by a flfiorizontally extending, vertically movable arm, which arm is adapted to be operated b .a'switchhandle to open or close the mult1- po'le switch. I I My invention still further consists in cer- /5 tain novel d'etails'of construction and combination of elements described in the specifica- "tion and set forth in the appended claims. For a more complete understanding of my invention reference is had to the accompany-- fi ing, drawings forming a part of this application',,in; which Figure 1 is a longitudinal section of my improved switch showing the switch contacts:

Specification of Letters Patent.

Application filed August 30, 1905.

5niarticularlyto oilswitches for Patented Tune 22, 1909. Serial No. 276,864.

the closedposition; Fig. 2 is a similar secorin the open position ;Fig. 3 is a plan of my switchcontacts showing the same in engagement; Fig. 4 is a similar view showing the contacts separated or out of engagement; Fi .5 is a plan view of a group of three single p0 e switches attached to a switchsboard panel; nd Fig. 6 is an elevation of the same, parts being removed for the sake of clearness. I have shown: at 1, a portion of ,a switchboard panel to'the rearof which is secured This bracket has two side ugs 4 to which aresecuredb bolts 5 two rearwardly extending arms 6,, the latter being referably of angle iron, as'is' here shown. wardly extending arms any number of singlepole or unit-pole switches are adapted to be supported. The length of the arms depends on the number of-switches. In this case 'I have shown three unit-pole switches forming a three: ole switch, but I desire it to be understoog thatmy invention is not confined to this "type of switch. In fact each unitpole switch is entirely independent. of the others and is complete in itself except for the operating mechanism, and my .unitole switc arrangement. in groups of any'number to form com ound switches of any desired num bers of po es. i p Ea h unit-pole switch is supported on a rectangular frame 7, preferably of cast-iron,

the angle irons by bolts 8. Each frame supportsbybolts 9 an oil tank 10. These bolts whieht repivoted to lugs 11 engage slots in the opposite sides of the frame. 1 Each lug is also prbvided with swin ing handles 12 for later. These perforated'l ugsform'beaf s oppositely extending arms or seated in the said perforations. 11

tion showing the switch contacts'separated.

etween these rear-.

Extending u ward froni the top of each the frame. ach of the lugs is perforated. I and the perforations in the corresponding 3 I v by boltis 2, a switch sup orting bracket es are therefor especially adapte for which in turn is secured .td the undersides of arranged in a line for pprposesiexplained for the oscillatory or rotary cast metalroc ers or. cradles 1-4, which.p .re' provihed with ilournals 15*105 he journal.

arms in the several switches are alternately the frame 7, a yielding collar or washer l.

which allows a slight lateral movement to the eontactsupporting porcelain tubes or hushings, and insures proper engagement ol' the arcing tips while the main contacts are in engagement and also sfter they have Slptr rated before final break.

Into each of the rockers or cradles are so cured preferably by cement or Bobbitt motel, porcelain tubes or bushings l5. Into each of these bushings is held by cement or other suitable means a contact rod 17, to the lower end of which is secured one of the contact members of the switch. Each rectangular frame 7 is suitably hollowed out and on sides of the rockers or cmdlcs 14 are suitably curved so that at all positions of the said rockers the latter fit closely w? hin the frame. li nch switch contact member consists oi n oppor or brass block 18, having an inclinedcontact lacs 19 and a. yielding contact jaw or spring 'ingor ll-l. liar-h eug'ogirnr pair ol'contn..tsa.1 e-li cein con truction, but with ports o'ppmsitrly arranged so that the inclined contact loco .0 ol (t( '-ll" ('-()l1i:1i'imember engages the inclined spring contact member .20 of the other. 'lhc contact blocks are provided with sparking tips 31, which take the are when the circuit is broken. liocatcd centrally oi" oaich tank is :1 transverse late or barricr ol' insulating material 21, to cssen the danger of injurious sparking und to assist in rupturingtho in'o between 'on-.v

tucts.

The contact rods 17'extcnol up into the porcelain bushings and are provided at their upper ends with screw-tirrcndcd terminal members 22, to cash ol which is pivoted n second terminal member 123, the pivotal ccnte; being cxag ztly in line with the axis of movement of the corres nnuling crzidlc 14-. The members 23 are provided wit-hthrcodcd studs 24, which are connected to threaded terminals 25 on the main. leads by collars 26. The connection is surroumlcd by an insulating tube or sleeve 27 which rests securely on the meiul'ier 23,:nrd is adapted to he slipped at Willalongthc nmin loud to expose the conneetion.

'lho insulating tubes and all the parts above the pivotal ccntcrs ol' movement. are held stutiormryby holding frames 2h which are secured toktho supporting;- arms (3 by the bolts 8. Each unit-pole.switch is fno'vidod with one oiitheso' lrnmos \s'hl'chextends over the switch mid on ouch side of the insulating, tubes-"holding the szunr in :1 lixrd position. lll'ro-z upper ends of the movable porcelain tubcsor bushings HS :u'o enlarged or are. pro-.

horizontul'nrni 5-38.

is swung ulnrnrd the rout sided with flaring sides so that the letter i t will not rik-s the s n ionary' members extending the-rm s The-opera ing: l-lhzlllfi for swinging the con-- tacts into and out of rug-n unent w ll now be described. Pivots-d n front of the switch-brand at 2?) thr o ruting handle 3 Tue handle has ilSllOli toggle arm 31 to which is. pivoted utSZ n link, 33. link 33 pivoted at to the orln of the bell-trunk lever 35. .The boll-crazil lover is pivoted nt- 36 to the supporting bracket 3. 51s shown in Fig. 5. The outer end of the is long: arm 37 of the bell-crank is pivoteu to the middle of the vertically -1'eciprocnting, This arm 38 in its en tics-l movement engages thrrocking radles and swings the switchcontacts louurd or away from each other. ln this rnsethe arm is provided with longitudinal grooves'39 which extend the lips ill of the cradles. As is soon from the drnwinggs when the hundlc is swung down to the closed position the iii-x1133 will be raised and the contacts will be brought together. and when the handle zn-ls will he quickly separated a ronsidmnblc distance. By mounting bolh the (mum-ts [or movement in opposite directions when the switch is opened, the contacts will be scpnrutcr'l substantially twire the distance in the some spore of time as in thr-v ordinury single-break switrhcs. 'lhus sparking at the contacts ,will he grcutly rcduvcd.

Having thus described my invention, what I claim as new and desire to secure by Letters lnlont is 1, in on oil switch, on oil tnuk having a cove-13.41. pair of ronturts then-m, contact rods on which said ronlncls are supported cxtcmlinsoul ol' snid look through the cover and supported lhorcon. means for connecting suid contort rods lo the main line loads, and means l'or rocking' sold rods to swing the contacts inlo and out of ongugomcnt.

2 in no oil switch, onoil tank, a pair ol contorls therein, ronlfu-l rods carrying said contacts, vsold rods living supported from n. point above the tank und (Xlvndlng downward lhrong'h lho roz'or thorrol', hinged menus for rounrcling lhorontnrl rods with the main lino loads, and means for rocking tho contort rods nboul lilo hing-ed cvnlors whereby tin (onlnr'ls will brsu ung into and on!v ol' cngngouwnt 2%. in on oil switch, :1 horizontal supporting'uwmbor. an oil tank secured lo the lower side lllcrrol', :1 pair ol coulucls in said tank, insulnlcd ronluct rods on which the contacts nav supporlod. rocking cradles in which the insulated rods uro svrurmhsnid cradles bein; mounted on said supporting member, und menus for rocking: suid rra'zdlos toswiug llH rontncls inlo and out ol -migngclnonl.

-l. in on oil snilch, u. horizoulnl supp t,

The

lll]

- an oil tank, apair of. contacts therein, contact rods to whichthe contacts aresecured, insulating bushings: in which the contact )i-Iigs journaled on, said support, means for plvotally connectingthe contactrods to the ,main leads andmeans for rocking the cradles to swing the icontact sinto and out of engagement. 5. In an oilswitch, an oil tank, a frame to which the tank is secured, cradles mounted ln journal bearmgs on card frame, porcelain bushings supportedin said cradles and extendingdown in said tank, contact rods extendin through the said bushings, contacts secure rocking said cradles mto and out of: engagement.

tionary'mainleads connected to the contact "rods by hinged joints, the axis of each of which is on alinewith the axis of the cone 6 in an oil switch, an oil tank, cradles mounted on journal hearingsover said tank,

porcelain tubes or bushings having flaring upper ends, extending through the cradles I into the oil tank, contact rods extending through the porcelain tubes, contacts on the lower ends of the rods,'stationary line terminals extending into said flaring ends of the tubes and. connected "by hinged members to the contact rods, the centers of movements of the hinged members and journal bearings being coincident, and means for rocking the cradles to swing the contacts into and out of engagement.

'7 In combination, in'a plurality of single pole switches, a main horizontal supporting member, a pair of movable-'co-actmg contacts foreach of the'switches, supports for said contacts extending through said main supporting member and mounted on bearings thereon, all the corresponding supports of the several switches being. connected togather, ainovablefidevice conpected to all said supports and means for operating said movable device to swing the contacts into and out of engagement.

8. In. a multiiole switch composed of a plurality of sing e-po'le switches, a support therefor, a aair of movable co-actin tacts for. eac of said switches, an oscillatory supporting-means for each of said contacts, a horizontal, vertically "movable arm on gaging all said supports, and means for re ciprocatingthc arm to swing the contacts toward or away from each other. i

9. In a multipole switch consisting of a plurality of lngle-pole switches, a horizontal supporting member, a pan of movable con' for each switch mounted in supports 1' oscillatory I .ent towed and away 11 "each other, suppi'irts for the extenUi-ig downward through s to the lower endsof said rods, sta-.

ID.OV8 the contacts toward and inclined zontal supporting member a movable arm extending over the switches and engaging posed solid contacts and spring contact;

ng'ers, and separate arcing ti or contacts secured to the adjacent faces 0 the solid con- 7 tacts, the spring contact. finger of each contact member engaging the solid contact of the other and the arcing contacts engaging each other when the switch is closed.

11. In a multipole oil switch, a plurality of 8 unit-pole switches each having a pair of contacts movable toward and away from each other, a separate rocking support for each Contact, conductors connected to the contacts and extending throu h the rocking 8 supports, the latter being electrically inde 3 pendent of the conductors, means. engaging all said supports for moving the contacts to operate the switch, and'means for constraining said rocking supports so that they will all 9 move in unison, said means for moving the rocking contacts being separate from said supports. 12. In a multipoleoilswitch, a plurality ofunitpole switches, each having a pair of 9 movable contacts, terminal members connected to said contacts and -japted to be connectedtotheline terminals, so arate insulated' rocking supports for sair contacts and the terminal members 'conndcted thereto, 1 and'means engaging the rocki supports to away from connected toeach other, said supports bein switches will ether so that all the unit-p0 e e operated simultaneously! 13. In an oil switch, an oil tank having a cover-{a air of contacts, therein, contact rods on. which said contacts are supported extending out of saidtank through the cover 2 and supported thereon, means for connecting 1 said contact rods to the main line leads, s stationarybarrier or plate of insulating material mounted between said contacts, said barrier having an opening in which said contacts are ada ted to engage each othef, and 1 means for roc ring said rods to swing theco ntacts into and out of cn agement. 14. In a switch, a plurality of contacts, contact terminals connected to said contacts,

insulating bushings through which said com tact terminals extend, rocking holders through which said bushings extend andin,

which they are rigidly mounted, separate; bearings for each rocking carrying contact members, said contact members having rigid contacts provided-with;

contact faces, yielding contact" and flwtlvvi i'oill each other so to swing the -fingers adapted to engage the inclined faces 3 i of the rigil'l contacts, and separated 3113111 tips secured to the adjacent feces of the rigid 1 contacts and, adapted. to engage each other. l

16. In :1. switch, zit-horizontal supporting xneinber, 1L plurality of contacts, contact tci i minalssecnroll thereto and adapted. to be i connected to line terminals, insuliitlng lznsin ings em'ronml'ii'ig said tein'nnals, rocking snpports in which said buslii are idl'y' secured, each support having intermeiilicte its ends separate. su iiporting bearings, and means engaging all of said. suppei'ts to open and close the switch.

17. l n an oil switch; a fnnne, an oil tank, n pair of oscillatory supporting members mounted on said frame i'i'nlcpen slently of each othen contact rods curried by said latory members and extending down'ewul. into the tnnla, means for connecting the alp ne ends of mid contact rmls to line terminals, on operating contacts at the lower enils ol' snial contact rods, and means engaging both said oscillatory members to rock the same town-rd l contncts into ninl out of engagement. i

essent- 18. In an oil switch, a horizontal support, an oil tank, a pan of contacts therein, contact rods on which the contacts are supported, bushings nvotnliy supported lntermediate their enc s on said. support, said bushings carrying the contact rods hinged means fen coi'inecting the contact rods with the main line leads and means the contact reds about their hinged centers whereby the contacts will be swung into and out of engagement. v

In an oil switcn', an oil tank, a pair cl contacts in said. tank, insulated contact rods on which the contacts are sup orted, insul: ;ing bushings extending into tne tank, and in which the contact rods are mounted, pivoted cmdlcs to which the are secured, and Inc-ens for rocking SiLlLl cradles to sw ng tlic contacts into and out of engagement. 7

in testinlon; whereof ziil'ix my signature,

in the presence {)1}. two witnesses.

VJitnesses:

ARTE-EUR F iiwxs, Ennn J .l lnesny.

BEBE T W. CHENEY.

for rocking insulating bushings

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