US1820375A - Molded receptacle - Google Patents

Description

Aug 25, 1931- v Hv. P` CHANDLER 1,820,375

MBLDED RECEPTACLE or'igingl Filed April` s, 1925 y Inventor Ifo/151210 Uff/mmA ,e

. Attorney Patented 25, y 1931 from PQCAND'ILER; or MANSFIELDQOHIO, hssreivon'rro 'rmiv omo BaAss ooMANY.,

or MANsrIELn-onm, 'a coRronATIoNloF NEWJERSEY Y' iv .MOLDED REGEPTAGLE g l orig'malappliuuon .ma Aprilajle'as," serialno. 2o,4o'3,nowratentlNo..1,'7ao,26a,`aatieafuly e, 1929.

` nlvldea and, thisvapplication filed March-10.11928. serial No. 260,703.; Y

'n M xii'l'vention relates to a conductor or .casf lnggfor an velectric clrcult controlling device 'Y andA particularlyto'that class off controlling devices which is. arrangedto break an electric circuit under'heavy current (load and'operated either, manually: o rV automaticallyv and` wllihjdevle is likely tok be, used in 'slamp o places orwhere the air is laden with mo1sturel as in thencase 'f'mines 'The 'object offmyy invention is toprovide a casingvfor such circuit controlling devices and used underth'ev conditions stated which `will-thoroughly s 1n# sulate the device from ground and will pre# vent .theentrance ofrnoisture to .the 'interiory of the easing, and whichv will at the same time 11.5 permit the gases -formed' in the casing,

the'fcircuit'lis broken therein, to-'escape andk prevent the vfornrlation of pressure within' the oflsi1\1g. if, My invention resides ,in the `new. and novel 'o construction, combination and'relationof the various zparts hereinafter fully described and shown' in the drawings accompanying this specifiation in which: y, i e a,

Figi is a hack; face view of myinvention, partial section yand with the covers removed. I .Fg- .isa front, faceview of ,my invention with, theV eoversremove@ l Fig; 3 isasectlonal vlew of my invention o on the'line S-B'ofFig. 1 but Ivviththe covers *40 acircuit breaker. Under'suchzuse the air Visy usually chargedshe'avily with `moisture Whichis very likely tofcondense and, there.- fore, I provide'al receptacle formed of'lnsulating material inwhichtheswitching ap` 45 paratus mayflbe substantially enclosed and nding case SerialNo. 20,403v filed April;

`which is provided with* ventingmeans *such thatfth'e gasesfformed within the receptacle upon the y'opening of thek automatic switch may ,n

escape.; y,Atthe same time, theven'tingisl of such construction thatthe arc formedwithin the'reoeptaclewillybe confined totherecep-f s tacljezandthereby avoiddanger of igniting gaseswhichmay surround thelreceptacle and with'vvhich mine air is more or less heavily charged. i l

tion Lemploy a casing 1,'vpreferably of insuf lating material and formed'to any shape'de-V sired to meet the requirements. The casin maybe formed ofa mixture of fibers Aan gums such. as asbestos ,andfshellac together with any :other modifying ingredients if desired andfwhich material may be formedinto and afterl the material hasbeen cooled,"re'

move they molded piece kfrom the die.

insulated `diaphragm 2and provided with an opening -3 therein? to-receivef the switch s l e 7o l Formed'wlthln the casmgjls a transverse operating shaft.vr Mounted within the casing i l and .projecting therefrom is an are chute 5 which has a cap 6l mounted thereon and se-k cured tothe chute 5 by meansof the screws 7.

" Between the 'chutey and the cap y6 is an air space .8 communicatingwith `the interior of the chute 5 so that any gases yformeel With-v in the casing l willbe allowed to escape from within thecasing." It will beunderstood, of course, thatthe oppositefaces of the Acasing which are shown in Figs. 1' and 2 arelprovided with-covers and 10 `andthese covers are secured tothe casing l by kmeans of fas-K,

tening devices 11 extending throughthecas- 1" ings and the covers, and by'means of the projecting lugs secured to one end of the" through-bolt 11. Arcs l1 and lla, areheld f lisY In the preferred embodiment of my lnvenl 5' be merely short projecting lugs or may consist of a single bar extending entirely across the back of the box and projecting from each side.

The interior of the casing 1 is formed with i two recesses 14 and 15 and separated by the diaphragm 2 and in the interior corners of the casing are formed fillets 16 with a transverse hole 13 in each. The through-bolt 11 is positioned in the hole 13. l

The arc chute 5 is provided with two flat spaced walls 5a and 5" and also with thetwo angularly disposed walls 5. The arc chute 5 is formed of insulating material, but preferably of a material which is not readily affected by the arc, as for instance, a material formed of asbestos and portland cement. This chute may also be formed in dies from a plastic material. The wall 5 isshort as compared with the wall 5a and its lower edge rests upon the upper outer wall 17 and is readily placed in position when the cover 9`is removed and is prevented from being moved outwardly through the fact that its walls 5 interlock with the upper sloping walls 18 of the casing, and the chute 5 cannot be removed sideways on account of the interlocking of the said walls, nor can it be moved laterally when the cover 9 has been positioned.

VMounted upon the chute in an inverted cup shaped member 6 which is held in position by means of the screws 7 which pass through lugs 19 on the cap and into lugs 20 on the chute. The chute 5 is provided with the upper opening 21 and the lugs 19, spacing the cap from 'the chute to form a recess 22 which communicates with the passage 8 to the external air. The cover 6 is formed of insulated material and preferably the same as the chute 5. f

The back cover 9 and the front cover 1() may be of the same shape and size if desired or any suitable size and shape to meet requirements, and are yeach provided with holes 23 which correspond with the holes1 13 in the casing. The front cover 10 is provided with the opening 24 through which passes the operating handle lfor the' switch within the casing. The side walls or' the casing may be provided with' the openings 25 and through which may extend the cables connected to the mechanism Within the casing.

In the particular construction of the case shown in the drawings, the wall 5a has been spaced from the wall 2 a sufficient distance to make the portion ofthe switch which opens the circuit and this would leave a space between the wall 5a and the cover 9, therefore` A'I insert a panel 69 which fills the space between the walls 5a and 9. lf the part of the switch for opening the circuit is of greatherein described. The surface leakage is also very small. Y

Having disclosed my invention I wish to ybe limited only by my claims.

1. A switch receptacle comprising a easing member of` formed up material having integral side and bottom walls and an integrally formed artition transversely disposed relative to tie wallsi'orming two compartments each open on opposite'i'aces of the receptacle, a separately formed and removable' cover for each'compartment and positioned parallel with the fixed partition, transversely disposed. registering openings in the cover-'of one compartment and the partition, a topside for the said Aone compartment formed integral with the sides and transversely disposed partition, a ,separately formed chute projecting from the top opening in the other compartment and a separately :formed cover for said chute to enclose the top and sides of said chute with an air space therebetween and means to secure the covers inrplace.V

2. A switch receptacle comprising a casing member of formed up material having integral side and bottom walls and an integrally formed partition transversely disposed relative to the walls forming two compartments each open on opposite faces of the receptacle, a separately formed and removable cover foreach compartment and positioned parallel with `the iXed partition, transversely disposed registering openings in the cover of one compartment and the partition, a top side' for the said one compartment formed integral with the sides and transversely disposed partitions, a separately formed chute projecting from the top opening in the other' compartment and beyond said top side and a separately formed cover for said chute to enclose the top and sides of said chute with an air space therebetween and means to secure the covers in place.

3. A switch receptacle comprising-a r'casing member of formed up material having integral side and bottom walls and an integrally formed partition transversely disposed relative to the walls forming two compartments each open on opposite faces ofthe receptacle, a-separately` formed and removable cover for each compartment and. positioned parallel with the fixed partition, transverse- 1y disposed registeringopenings in the cover of one compartment and the partition, a top sider for the said one compartment, a sepa,- rately formed chute projecting from thetop opening in the other compartment anda.

`seperately formed cover for said chute to enclose the top and sides of said chute with -an air space therebetween and transversely disposed means to secure the covers in place. In testimony whereof I afiix my signature.

HOMER P. CHANDLER. l

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