USRE14498E - Best available cop - Google Patents

Description

H. F.' KRANTZ. SELF ACTUATING SAFETY PANEL `APPLICATION FILED APR.-I E. |918.

3 SHEETSfSHEET 2.

misma July 3o, `1918.

Hl F. KRAYNTZ. SELF ACTUANNG SAFETY PANEL. APPLICATION FILED APR. I6. 1918A Reisued July 30, 1918.

.u INVENToR BEST-AVAlLABLE COF" UNITED sfratrnsu BATENT OFFICE.

HUBERT F. KBANTZ, or BROOKLYN, NEW

Original No. 1,248,431, dated` November v127, 1,917, Serial No 'i I L vreissue ledpril 16, 191B,

To'all whom it may concern."

,Beit known that I, HUnnn'r 1 `Knamrz, residing at Brooklyn, in the countyof Kings and State of New York,.have invented certain new and useful Improvements in Self- Actuating Safety li.anels,K of which .the fol lowing is a specification. f yThis invention deals withy .cert-ahi' iinprovements in safety panelboxes designed to. afford more convenient access for purposes of inspection and replacement ot' safety fuses and it embodies certain of the broader features claimed in my copending case' No. 42,956.; adding thereto certain further provisions in the vconstruction of ysafety panel boxes.-

Among other objects, this invention pro.- poses an arrangement such that .the door vcannothe either opened orclosed save when the switch blade is in openl circuit posit-ion, and sut-,h that an attempt to either open or close the 'door willthrow the blade into or oti' position. Y Another object is to provide means whereby the opening of the4 door will shift the make-and-break mechanism into fully exposed view. l l

= A further object is to provide a. plurality lof operatingmeans for the switch blade, with `certain relations'between them suchv as to control the movements of the door-in accordance with the position of the switch blade.` iv i (ltl'ier objects will be in `partobvious from the annexed drawings and in part indicated iin' eonnoction therewithby the 'folloyviug lanal :-1i,- of this invention. y f A.f

This invention atafordingly consists in the features oi construction, 'combinations .of pa-rts. and in, the unique relations fof the incinta-r?"fand: in the relativeproportioning 'and 4disposition thereof; all asnini-echinpletvly outlined heroin` andI t'.he scopowf protectionf fonteinplated will be indufatedf'in theappendial claiins. l j 'llo enable otherssltillcd intheart so f ully t.o, colnprvlwnilv the linderl-ying' features k tl1ero l"that they lnayi.-embody thesanlo by the nrnm'rous moilith-ations'in striniture and 50 relation contemplated by tliis enlion,

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`box` is'f .occnpiedV by, .niechanisln and by illeawings--drpig-ting a, ln'nferred forni have 1. l.

l YORKy -AssIGfNon :ro KRAnTz MANUrAc'rUn- ING COMPANY,YINC., OF BROOKLYMNEW YORK, A c-ORronATION OF NEW Yonle Specification of RissuedtLetters Patent. f Reiss ed- July 30, 1918i.-

out all theviews ofwhich Figure lfrepresents the invention -iril-li. git-udma l cross-section iwith the vs \`vtch Ablade in. closed circuit: position. 'Fig'. rl shows the same with the blade" Open circuitosition. f j" Fig. 3 lis a'plan of this apparatus. 4 and are details showing th erationof the, door lock, and

Fig. G is an enlarged detail sectional view illustrating tlietoggle mechanism `for opfer- 65 atingr the switch vblade,'said` mechanism being similar to that shown and described in--niy copending application above 1 `efer1ed Jvto.

Referring to the drawings, A designates generally a structure in tlienatuijeio 'iaibx i1-"other vsuitable inclosure whicl' t be constructed in yvarious ways, as .for example, by means of sheet,metalsideszandfends 1 and 2 connected, if desired, with asimilar' Hoor member 3, 'and interiorly providing a 7'5 base-plate ot'. 'nsnlating material which is utilized as, a-11iol 1nting for onerfmore termi-nal element-s.v As heresshowm associated withthis`b'a'se-plate is a, l'iartjt-iont 5 ot' insulating material wliich dividesthei'n- "8.0 terior of the bonV Vinto a gutter or channel B -a`rrying thel loading-in wires from'thelln'aiil supply and ycontainingtheterminals 6 thereof which, by Ameans of lsuitable screws?, arey connected diiectlyto main-line switchft'eifi' The terminals 8 areeach 'f Z shape. They extend upwardly along the gutter side of the partitionl 5 and oti'litle over saidpartit" inl, so as to provider, portions 9 again hihi ylrthe.sx'vitcllfli mayl direi'tlyibezlli; iliSnlating: y i

and it is; therefore. normally closed The remaining spare-,of the etv the Inake'aiudf current; 'ca rrying parts are A at i as

1155 gloyed-` vvherewithE to swing the switch blade live parte This.door,xhowevel",-is so arranged, as forA inetamoe by-means ofthe hin ,orits invefilent/.12, thatitfmaybe disp oed'ory e tout of'ita normal position to permit access` .into 4the box, especially for the .purpose of replacing fuse units, orto provide foniaspection of the switch blades kand their op- 101 In e illustrat'edembodimentof-this invention inspection isvery conveniently ff vided fori by mounting a part 'ofthe-lnakeand-breakmecharsm on the-shiftable' door C -so that when the` door has;l osned, 15theff make-andbreak mechanism lw' brought into'a able `inspecton position. j 1 j i The general arrangement is fsuchj that -wheneverlgthe door is displaced,and access 20jl sthereby afforded to the interior of the box,

the fuse'units- `and the switch blades, all are nrily\dead.' l lThe particular mechanisxnfhere to' forfdisclosingthis mode of operationjia constructed asfollows': v Mounted 'on the base' board 4 are two fuse the fromftouching'any 'terminale ;13`.and '14 which are .adaptedlto lact as spring clips to permit a ready substi tutionof any suitable fuse units.v I

terminals -13 and 14 are' merely typical ofiany variety of socket or arrange ment? adapted separately to receive fusey units. The terminal 14 'is connected with an branchlline circuit'by. means of a part 15, andthe terminal `1 3 is connected preferably directly with a contact piece 16 which receiv'es the current from a suitable switch bladeSvwhen in contact :therewith Preferably this contact ljis com lementay to theco'ntact 9A and is arranged) 'opp'ositefthev same diagonally'across the'axis of rotation l"sof thef'switch blade. S. 4 The switch blade is mounted to rock about the axis 5V, 'and is actuated lb y il thereby swmglng the arm O about'its axis m, 'Lnnd thus,-by"vmeans of the toggle mechaniem,.illustruted in detail in Fig. 6, causing `theswitcheblade S to be'forced mto and locked in its closed circuit position 'against so they contacts 9. and 16, or` permitted to s na'pf' into opencircuit'positlon by spring ac- 'Whilefit willbe understood that an suit# able type of switch mechanism may, em-

in response tothe movements of an o rf rati handle, the mechanism"v illustrat in fthe'. wi includes a pair of toggle links `704ml 7 1 plvotally connected together asA at fico 72. The link 7 0is mounted upon the pivot an;

"while the `link 71f-ispivotally connected, as

" at 7,to the blade-carrying plate R -at one :side ofthe 'pivot V; When the to le 'is made the pivot 73 is, of course, moved own-` an wardly so that the blade is'swung into the f Ay door-locking handle f underneath a should any attempt grasping the handle 69 and` 'switchmechanismsuch that the door can thermore suc a shifting of the sw itch blad'e1i nto circu position in this instanceby b BEST'AVAILABLE coP position shownl in' Fig`.`1, while when the tege is broken, the blade standsin the o position as in Figa.l 2 and 6. "Theilink 70 is provided with extensionI parte- 'M `and 75 for engaging 'against' the 7e surfaces 7:6 and 77 re's ively to determine the tjwopositions of t e toggle; Y t A f #Ting 78 normally retains the bladeV in'o .position. `j I fThe inner end of the4 lever O isprov'idedl with-' ispaeedopposing shoulders 79 and 80 `so 'as v,to en Vge the knee-of the togglefor actuating t togglle and at the 'same'time for providing am e loifit'motionA to'enableth'e toggle to sna oli`. so

is, inV this em; bodiment,pref erably arranged sop-as to be? bodily movable with thedoor itself so that it -ma 'fbe used not only for unlocking the` ut. alsoasa finger 'grip forbodily displacini the door during its own shift in l space, alt ough it may be arranged so as to perform the former function alone by'pro `din'g'g'the door with a separate linger grip "to be used for shifting the door `after it has s0 been unlocked by actuation of the other. l

The handle 1 is linedv to a pivot'allyf mounted shaft 17 to `which is also ailixed a rotatable late 18 on the inner-side 'of thev door C. xtendin from this plate 18 isa. 95 locking latch 19 w ich is adapted to catch;

lip'20 secured to a stationary gert ofthe box and thereby to prevent the oor-'fr'ombeing opened when the handle is in the position, shown by Fig. 1. f f .100 The construction is also jsuch that. the door cannot be moved to closed` ion. when the handle is in .locking position,v and `this is accomplished `by* means of jasecond* projectionI E which is arranged so that it" will impact the up r surface of the 'lig 20 001' made to close the when the handle is in the wrong position'. Now this invention furthermoreplp u a connection between the handle D an lthe neither beopened nor closed save when 'the switchis in o n circuit positionyand ffur-l t thatsn o ration of. the handle 'into unlocking position will `result 1 15 open circuit positiom:

The switchrlmechanismpresentsin-addi -tion to the actuating lever 0 a second ac= tuatin member T which ieell'ective, toA @U59 eswltch blade to move into itsopen K the toggle; ile it maybeconn any desired manner, t o' move the open circuit position, as here illust x a y is connected with ther knee of the, toggle;

List',

, BEST AVAlLABLE ,COF

swing' into itsopen circuit position. Like-l wise, if the arm O be swung into the posi; tion shown by Fig. 1 then, of necessity, the

partT will be moved toward the right as shown in Fig. 1, in which case 'the switch S establishes electrical connection.

An interponent F, intervenes between the part T, o the rail Q12 connecting a. plurality of similar parts T, and the handle D in such a manner that when the handle I) is in the position shown by -Figs, 2 and 6, (permitting the door to open) the part T must, ,ofl necessity, be in its open circuit position; and conversely, when t part T is in its closed circuit position, iterponent F compels thel handle Ii) to assume the position shown by Fig. ,1, thereby preventing the door from heilig opened, if it be closed ,or

from being closed il it be open. This effect is conveniently attained by pivoting the interponent F to the plate 18, as by means of the pivot :23, and -by causing' its othereend to be guided 'by a. part 24 into proper relation with the cross rail, Q2.

` lt should Ibe pointed out that the/handle l), with the parts directly connected to Vbe operated thereby, constitutes an auxiliary manila] control means for the switcli'bl'ade in that said parts are'capa-ble, independently of the main operating or control arm (Y), of controlling movement ot' the switchrbla-de from one of its positions to another at certain times. The effectiveness of this auxib iary control means is dependent upon the position both ot the movable doo-r and of the main control means for the reason that the lswitch blade can nevenbe in the on7 position except when/the handle is thrown to a corresponding position, and it cven`tlien is never 1n engagement with the opposite contact terminals except when the d-oor is closed.

Thus the position of thedoor, whichconstitutes' a parto't' the protectiiig casing fortlio switch blade, determines the effectiveness ot' the auxiliary control n'ieans.

As many changes could be made in 4this construction withoutdopai'ting from the scope, ot' the following claims, it is intended that all mattei' contained in the alim/'esilescription, or shown in `the accoinpanyiiigl drawings. ,shall be interpreted as illustrative only and not iii a limiting sense.

llavingl thus revealed this invention, l claim as new and desire to seciire the follow ing combinations of elements, or iapiivalents thereof, by Letters latcntof the United States.

blade. manual control incans"tor the switch blade. a displaceable closure nicmbcr for Isaid/ .switch mechanism combining a casf ing having an openingl thereinto, a switch causing said switch blade to assume open circuit `position as said lock is manually 4tions between said switch blade control means and said lock for moving said lock into locking posit-ion when said switch blade is thrown into closed circuit position.

3. A switch mechanism combining va casing having an opening thereinto, a switch blade, manual con-trol means for the switch blade, a displaceable closure member for said opening, an element operable to displace the yclosure member, a part movable by said element to lock the closure member against displacement, a-nd connections between said part and saidv switch blade whereby to constitute an auxiliary control means for the switch blade.

4. A switch mechanism combining a oas-- ing havingan opening -theieinto, a switch blade, manual control means for the switch blade, a displaceable closure member for said opening, a handle mounted on said closure member lia-ving a part tov lock said closure member, saidhandle lbeing adapted to ibe actuated fiist to unlock the closure member and then to displace it, and means whereby the handle constitutes part of an auxiliary control means for the sw itch bladeoperable to cause, the switch blade to assume an open circuit position when said closure mein-ber has been unlocked;

, A switch mechanism combining a cas ing having an opening thereinto, a` switch blade, manual control means for theI switch blade, a displaceable closure member for said opening, a. manually opera-ble, lock operaible independently ot' the manual control means ior the switch lil-ade for preventing displacement of said closure .incinlieig and means whereby said lock constitutes an auxiliary manual control means for tlio' switch blade.`

o. A switch mechanism combiningl a. casingl lia-ving afn opening tliercinlo, a switch 'lil-ade, manual control means for the switch blade. a displaceable closure mein'ber t'or said opening, means indepenilcut of said switch blade control means effective to prevent closure of thc closure member whoii said switch-blade is iu'closed cirfuit position, and said ylast means comprising -aii auxiliary manual control` medium for tho'switcli blade,

7, Aswitcli mechanism combining a casing having an opening thereinto, a switch blade, manual control means for they switch blade, a displaccable closure member for said '50 the switch mechanism, said'protecting mem l IQ give accento; mid-bl 'f anxil ary control l .pl-accable .e 1e

lREST `AvlilflslBLE COF` o ing, meansl independent of the switch b ade control means for preventing said olosiire member from being opened when j said blade is in closed circuit position, and said last means comprisin an auxiliary manual control medium for t e switch blade.

8. A' switch mechanism combining a casyinge .pair of contacts lixed within' said casaced apart, the casing havingan openin ereinto, av door for said o' inginov abe into two positions, a con nctor member mounted upon the .door adapted tovbe" shifted bodily by movement of the door into a and out of a positionV intermediate said pair of contacts, manual-control means for shifting said conductor member operable when the conductor member is in position interi mediate said contacts to move the conductor i member into .and ont of eng'ngeme'ntifwith both of said contacts, and means independent of said manual; control means "forpie' f venting movement 'of the conductor member `in to'position intermediate said contacts except when the conductor member has been operated by .said manual control into itsv non-engaging position. .f

9.. Afl switch mechanism combining a casa ing having an opening therei'nto, a door disg placeable to open and close said opening, a

"""switch :blade connected to be shifted into functioning positilin by closing said door,

y manual control means for the switchjblade, and-means independent of said switch blade control means for cansingsaid switch blade 85 to assume its opencircnit position whenever said door is either opened or closed. a 10. A switch mechanism combining a casing having an opening thereinto, arswitch blade, manual control means for the switch 40 blade, a'displaceable closure' member for said openi l, auxiliary control means for the switch` lade, and means. whereby the ell'ectivencss'ofthe auxiliary control means is determinedv by the position ofthe closure member. v y

11. A switch mechanism comprising a movablel contactfpart, control means therm for, auxiliary control means for said mov# able contact part, a protecting'mcmber for ber havin a movable nrt,.and means whereby the e ectivenesso ,the auxiliary control f means isl determined by the position of the movable part otheprotecting member.

il i12., A 'switchmechanism having a mova- Hble blanda-an; operating handle for. moving seid e protecting member yfor prob .1 testing said lblade,'said member having a' dieplaceeble vd' laceable' to means for'the blade, and means whereby the clectivenessof said anxilia by I :he'positiiiny A] a tact `part. which swings labout said `j having an opening thereinto, a door for the opening ivotally mounted to swing into andaont of c osing positiona switch mechansm carried by the door to. swing therewith andhcoinprising a double-ended switch blade pivoted intermediate its length to swing its f .opposite ends into and ont' of functioning position, and a pairV ofcontacts for `the re spective ends of the switch blades arranged with respect to the door hinge so that when the door is swung open 'the ends of theg switch blade will move in opposite directions away from their respective contacts.

- I 14, A switch mechanism combininga cas-- vinguhaving an opening ther-cinto, a door for' the lopening hinged to swing into and out of a closing position, acontact ymember arranged x within the casing, a switch mechanism canV fried by the door to swing therewith, a barrier arranged within the casingl between said contact memberand said opening to render the contact member practically inaccessible from said 'opening when the door is open,

and the switch mechanism comprisin a con-.

rrier intol and ont of position for functioning,- with said contact member whenthe door 31A closcdor o ned. 'f' I 15. A switch mechan ing having an opening t ereinto, a closure comprising a easpart for-.said opening, sai casing providing va compartment havingan 'overhangmg cover,l

ledge adjacentthe opening, a contact member terminating at tlhefunder face 'of said i ledge, a switch device for coperating with 18. A switch mechanism. cpmbinin" a cas-J afg thereintm'a displaceor the opening, a latch" in? having an openi Aab e closuremember for lthe closure member adjacent one' .edge

assume 4open circuit position when the latch is operated to release the closure member-.J4

fthe-reef, a switch mechanism adjacent the opposite edge of the closuremember, and yconnections extending from tli'e 'latchacross the closure member to the switch meehanism'f`A lOperative to canse the -switcln mechanism't 17. Aswiahmhanism combining a.

havin an opening thereintofa closure member, or y the Jo deviceyhqu:Eted .to insure' .wat

` mg movable into'and l .put of. closing positionne latch for retainlcasable retaining means 7 oling plateis in unlockingA position, .extension formed upon the locking ateloperablevvh'eln the closureni'einber is ge' .eosed" to constitute afstp for `eiigagau y 1. f t

'lng against an opposing surtaee portion ot A the. mme to,

prevent movement ot' the cloclosmg position 'cX- cgpt'gwhen A:the locking plate position.

18. A switch mechanism combining a casing having an opening/tliei-e'into, a door for said opening movable 'into two positions, a switch mechanism including a switch blade, manual control means for said switchblade, and means operable independently of said mentioned manual control means for causing the switch blade/te assume its open circuit position whenever the door is in one of its positions.

19. A switch mechanism comprising a pair of contacts fixed in spaced relation to each other, a pair of movable contacts for cooperating With the fixed contacts, operating means to cause the movable contacts to move in opposite directions away from the fixed contacts respectively, and other means selectively'operable also tocause the movable contacts to move in opposite directions away from the fixed contacts. f

20. A vswitch mechanism combining` a casing-having an opening thereinto, a door for ,said opening movable into two positions, a pair of contacts fixed within saio casing spaced apn-t, a pair of movable contacts for cooperating with the fixed contacts, operating means to move the movable contacts in opposite directions away from the fixed contacts respectively, other operatingmeans selectivelyV operable :lso to move the movable contacts in opposite directions away from the fixed contacts, and the structure being?,lr of a character such that movement ot' 'the door in one direction also will efl'cct movement of the movable contactsl Yin opposite directions awa y'from the fixed contacts.

21. A switch mechanism combining a casing having an opening thereinto, ay door tor the opening movable into two positions, a `)air of contacts arranged within the caslng spaced apart, aswitch .bladeI adapted to be moved into and ont of position engaging said contacts, means whereby to cause the parts ol' the switch blade which are adapted to engage said contacts to move in opposite directions away trom the rcspective contacts, and the structure `being;` ot a character such that movement ot' the door into one of its positions will cause the mentioned portions ot' the switch blade to move farther away from the respective'contacts.

22. A switch mechanism combining a c asv ing having an openiimr thereinto, a door for the opening movable into two positions, re-

for tbc door a )air of contacts arranged within the Vcasing BEST Ai/AILABLE cop*- Y vmovedl 1 d crate so as to assume a spaced apart, a switch blade adaptedvto be into and ont of position engaging contacts, lconnectionsl between said door retaining means and saidvswitch' blade whereby to i.anse the partsfof the switch blade which are adapted to cngagezsaid contacts tov lno've in opposite directions away'c trom the respective 'of Said rctalninghmeans` i'ntofnonfretaining cont-acts by movement position.,v and means whereby subsequent movement ot the door will. cause themen-I tioned portionsot the switch blade to move farther away from the respective contacts.

23. A panel box connrirising a relatively stationary part and a relatively movable part, the latter position -to give access into the former, a pair ot' contacts fixed within the relatively stationary part spaced away from. each other, a conductor member arranged within the relatively.stationary part in a positionA between said fixed contacts adapted for electrically connecting said fixed contacts together, and means'connecting said conductor member with said relatively movable part whereby to bodily shift the conductor member out trom between said fixed contacts and into a position affording ready insl'iection of thc conductor member upon opening` movementot' said movable part, together with mea ns operable to move the conductor niember into and out of engagement with Said. fixed contacts at will while said conductor member is in position between said fixed contacts.

A switch mechanism combining a casing;r having an opening thereinto, a switch blade, manual control means for the switch blade, a displaceable closure member for said opening, a manually operablclock oimrable independent ly of the manual control means for the switch .blade tor prevent-.ing displacement ot the closure, and the structure being of a character such that an oit movement of Ithe switch blade precedingr a releasing operation oi' the lock will permit displacement of the closure member.

being movable into an open 25. A switch mechanismcombining a casiner having an openingthcreinto, a switch blade, a displaceable closure member for said opening, a latch device for the closure member manually ol'icrable indclwmlcntly of the manual control means 'for thc switch blade, and connections. between the switch bladi` control means and said latch device of a charimter to cause thc latch device to op` position latching the closure member closed whenever the switch blade is in on position.

r 26. A switch mechanism combining acasing having an :opening tlicrcinto, a switch blade, manual control means for the Switch blade, a displaceable closure member 'or said' opening, a latch device for the closure y "BEST AVAILABLE colD` i the manual `con means for the swieh `d' leeement ofthe closure mem ,-bIade, and said latch device being of je" cherfor causing the switch blade to assume?A openmemberinanuallmei'ehle independentli' ineimsf lhe' switeh b ledefor` y menne noter auch that ,it may lie-operate@ toi'xnf jitcuitxpoeition as' seid `look iej minimallyv 51 latch vthel closure member, ets'ny 'time,.to fmo'vedto nnlockin Mld-Nid v gather 'withmeens in eombination hcpwevel,` f mentioned means me udingna pertvfon the switch 4taining-the switch "bl-edefin open-oircit requiring en -olf `position of blade prlor bozenyop'ening movenfent ofthe siton while the lock' temoins 19 27. A `switch mechanism combining a oes- In testimony `whereof ingV he'vingjanopening'thereinto, a. switch inthe presence o f twojwi .H1 l 'iY blade, menualfoohti'ol means foxfthe switch. v i

, binde, e displaeenble Aclosure 4 memberffor Witnr f y said opening, e menuellyjopereble lol; opV 4 Minn. Gunn,

15 erable independently ofr'the manuel control J.YA. Ngwmiw.'

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