US2133099A - Electric fixture - Google Patents

Description

' A. A. JOHNSON 2,133,099

ELECTRIC FIXTURE Filed Nov 6. 1935 2 Sheets-Sheet l g veyvian mm @{mm 41mg, .V. m

0d. 11, 1938. v A. JOHNSON 2,133,099

, ELECTRIC FIXTURE I Filed Nov. 6, 1935 2 Sheets-Sheet 2 5 suitable-dies.

Patented Oct. 11 1938 r g e UNITED STATES, PATENT OFFICE I 2,133,099: g I

ELECTRIC mm? 7 Arthur ArJohnson New Bedford, Mass, assignor to John I. Paulding, Inc.,.New Bedford, Mass aicorporation ofMassachilsetts Applicationi'Novemberi e, '1935," -Serial No. 48509 19 Claims. (chase-73y Thisinventionrelates to"electric light'fixtures a separate application for design Letters Patent, and is exemplified in a wall bracket for electric filedby me in 'the-iUnited states Patent Oflice.

lamps. September 19, 1935; Serial No. 58,618; This ap- The mainobject of the invention'isthe provi plication is resti'icted-to the mechanical construc- 55 sion of an electriclight fixture of. simple and light tiom'tif'theflxturedescribedjhereinafter. 6 construction which maybe easily and rapidly =--In the clrawings-is'shown, for the purpose-of assembled. 9 illustrating the invention,afixture adapted for A further-object ofithe invention is the proviuse as a' wall' brackenin'which Flgurel is-a front sion of an insulating body of suchform that a elevation'fof the fixture;

"10 lamp'socket may bemounted therein by inserr 1 "-1=.ig.-"2 is a. central vertical sectional view '01 I0 tion'from the back of theinsulating body'; the-s'amefon .line'-2'-'2 inFlg. '1, looking from An additional object'is top-rovide simple means rightto'leftf i Y i for lockingthe' lamp socket within the insulating" Fig; '3 is atransverse sectional view of the body to hold it fixed against ,movement-in any same;on' lineV3-3 in Fig. 1,'1ooking'downward1y;

- direction. Fig; 4'is-a rear view'o'f the fixture; 1

Another object is the provision of a fixture Fig. 5 is a rear view of the bottom'portion or having a convenience outlet for'receiving'a plug the fixture with the' insulating platewhich holds for-operating'from said fixture auxiliary electric theconvenience outlet contacts in place'removed; devices such as vacuum cleaners, =toastersand this'view showing-one contact in-placeian'd the similar articles. othenremovedto show'the': contact recess; 20

Yet another objector-the invention is the pro Fig, 6=is a; vertical sectional view 'on lineB-i vision 'ofa fixture having a one-pieceinsulating in-Fig'.- 5,- showing a convenience outlet contact body of such'fformthat it maybe moldedfrom and slot -'for receiving the blade of a plug; suitable material in -one 'operationby'the'use'oi Figfq is a similar fiewon'linel-l in Fig. 5;

"Yar qus Objects of the invention -wil1 be de- Fig. 8 is a side elevation of a. convenience outscribed hereinafter. u let contact withlead wire attached.

y inVentioncontemp'lates the P S O Referring'to the drawings, there is shown an fixture'comprising a "hollow Shell 'ff COII- electriclight fixture made-in accordance withmy tru t rm l m n p r m-p r elain or o inventionand adapted for use as a wall bracket 30 other suitable insulating material and preferably 1 p i h l ghell of insulating ma,- v 'a b e po o 0f envsuitable rfdrm for teriaka lanipsocketmountedtherein with clampa ng a WaILO 'O p r Surfacewith ing means for locking the socket in fixedposition. a p ng p rt n or h n p o ke The shell 'may be of'any' suitable form, but, as theproiecting p n having an p n it u h sh wn, comprises a base ortion 1 0 for engaging 3 which: an electric lamp may be threaded-into the] a an bt p wg r e and a p lamp receiving screw shell of the socketin 'reg'isjecting' portion" I I for, housing the electric lamp ter with said openinge s e l is solformed soc'ket,' which portion is provided with anopening' t eta amp s suiteblelformmeylbe I: for theinsertion r an electric lamp in the 40 n ed from the rear into the projecti g P socket; The shell'is open in its-rear face and the 40 tion, with the screw .shell in :register with. the base has afl'anged' edge [3 hi fom a-chayn p Opening in Said P bei- H thereunder opening into the chamber 15 in=the projecting portion H. In external'con The invention further acontemplatessthe provision'vofi'simple'meaIFSWhembYZIthe m j figuratiomthebase'isinthe'form of a shield with after bemgmsertedm :.the'.shel1,;may'beclocked the:pfojectmgibdrfibn3 pbsitioned i itsl'ower' parts,

in lamp receiving position. The preferred em- V bodiment .of this means consists, of ;-a clamp I v mi e n w mo nted ameletfi I lan 'p socket comprising an upper block 16 and fastened to 'the shell and adaptedito engage i-a portion of the. insulating :body ofitheQIampsQcket for holding it :infixed position. NVhen'the'fixmwr'bbckeflfliinsulating m l fastened 5.0

tureis provided'with'za conveniencesoutlet, :the Q s J -SPM Q e i'e un means for fastening thefixedcoritacts, of.;s'aid t een he a s e d a lampreceiving screw outlet is utilized for fastening the clamp. shell 9i the, ftoniiface -i ppe )Theparticular-ornamentaltdesign of the :fflxe: 12 99 :w-T er'z werjblock" I1 is preferably 1015 mm disclosed-hereinvis-describedrandmlaimedin heavier;cqnstructi nsandzof greater horizontal 55:

22;, dimensions than the upper block 56' for the purpose of imparting stability to the socket (Fig. 2).

The chamber I5 is preferably formed with parallel side walls 20 and 2! joined together'at their front ends by a wall 22, which is semicircular in horizontal section (Fig. 3), and the floor 23 of the chamber is parallel with the ceiling '24 thereof (Fig. 2). This form of construction of the chamber. !5 permits 'the'lamp socket to be inserted into the projecting portion sidewise and the dimensions are such that the lower insulating block I! fits snugly within the chamber.

Preferably, when the lamp socket is in position in the chamber, the top end of the screw shell l9 projects partially through the circular opening I;

in the top face of the projecting portion 1 l This necessitates tilting the socket slightly when in-'- sorting it into the projecting portion, but the projection of the top end of the shell into theopening tends further to stabilize the lamp socket and to; prevent lateral movement thereof.

Although the socket may include any suitable switchmechanism, it is shown as provided with 'a-switch of the construction disclosed in United States LettersPatent No. 1,700,791, iSSHBd't-i) Morey &; Brogd en on November '7, 1911, and adapted-to be operated by a'pull chain 26 which runslaterally from the switch down through'an opening 28 in the lower block I? and out through an opening 30 in the portion ,i i (Figs. 2 and13). The opening28 isin the extended portion of the lower block, some distance inwardly'fromfthe switch, so that the force exerted'by the chain on thest-vitch whenit is pulled is in a horizontal direction which insures perfect operation of the switch. at alltimes.

' For fastening the lampsocket in fixed position within the shell, any suitable clamping means maybeprovided and one forniof such means is shown comprising'an L-shaped clamp 32, having 'one'end; engaging a shou1der'34'formed in the lower block of the socket and its other end fastened to the shell. Preferably, the latter end of the clamp is-tapped witha threaded hole and'is inserted in a square'recess 36 formed in thefioor 23 and is fastened therein by a screw 38 mounted in a bore 4!] in the shell. The axis of the ,threaded hole is. inclined downwardly in relation to the long arm of the clamp so that when the screw 38 is tightened, the short arm is fulcrumed on thetop edge of the rear wall of the recess to cause the long arm to exert a downward pressure on theshoulder 34.

The fixture may be provided with aconvenience outlet and. one suchis shown in the drawings as arranged in the bottom end of'the shell, and, for

thispurpose, that end of the shell is provided with a solid portion 42 which is recessed to afford a pair of parallel jack blade slots 44 and for holding a pair-of contacts 46. :In vertical section, the portion=42 is approximately triangular, having a-transverse vertical face 48, a top face which is a continuation of the floor 23, and an oblique outerface lll out .of which .the slots 44 open and which is flat, for plug engagement. In'the vertical face 48' is' formed a' transverse recess 50 which; is triangular in vertical section (Fig. 7 )1 V one of the walls of the recess being horizontal and. the other, oblique. The two jack blade slots 44 are parallel with theoblique wall of the recess 50 and open out through it into said recess (Fig. 6)' 'the"fuli height of said wal1,thereby dividing the'oblique wall into three sections (Fig. Above the recess 50- and on the outer si-defof eachaslotMzis another'recess 52 which opens numerous moldsinvolved in the method of cast into the slot and also out through the floor 23 (Figs. 5, '7 and 3). Each of the contacts 46 comprises a base (designatedas 46) and a blade portion 54 which is'turned at right angles to the base and'then in a reverse direction (Fig. 8). Each of said contacts is arranged with its base in a recess 52 and its blade portion in the adjacent slot, Fig. 5) and to the base is attached by solder 55 a lead wire 56. To hold the base against H upward 'movement, a V-shaped countersink 53 is formed in the outer wall of the recess 52 into which the end of the base projects. For holding the contacts in position in the slots, a cover 6110f stiff fibre board or other material, is mounted in the recess 5!] with its bottom edge in the angle formed by the meeting of the two walls of the recess, and when it is fastened'at its top edge to the shell by the screw 38, the bottom edge is locked. It will be observed that the screw 38 thereby performs two functions, namely, fasteningv the clamp 32 in addition to the cover.

The assembling of the fixture is a very simple matter. The lamp socket is inserted sidewlse *in the shell, the pull chain being dropped through the opening 33, and isslightly tilted to enter the end of the screw shell into the lamp opening l2, after which it is pushed against the curved end of the projecting portion. The clamp is then placed in position with one end in the floor recess and the other end engaging theshoulder inthe socket block. The contacts are next, inserted in place, the cover 60 adjusted and the screw 38 inserted inthe 'bore 4B and screwed into the clamp, thereby causing the free end of the clamp tobear down on the shoulder to lock the socket in place. the cover 60 to hold the contacts securely in operativeposition.

In use, the fixture is fastened to an outlet box 1 set inthe wall or other supporting surface, with its flange l3 in engagement with the said surface, and for thispurpose itis providedwith a circular opening 64; for-receiving a-headed bolt (not shown) for fastening the fixture to the cross bar of the outlet box. The lamp socket and the convenience outlet are connected to circuit carrying wires in the usual well-known manner.

After the fixture has been placed in position, an electric lamp 65 of any suitable form may be threaded into the screw shell of the socket- Since the socket fits within the projectingportion of the fixture with its screw shell'portion projectinginto the lamp opening, the clamping means serves to lock the socket in fixed position sothat the strains imposedby screwing a lamp into or out of the socket produce no movement thereof It will be observed that my invention provides.

a fixture of extremely simple construction, which is, easily, assembled andwhich'requires but one fastening means, even when a convenience outlet is included therein. 7

Another advantage of my invention is that the shell carrying theoperative part-sis so formed that when made of porcelain, it may be molded out of a semi-dryinixture by the'useof dies, so

that I avoid-the long delays andthe expense of mg theshells from a wet mixture.

Although Ihave-shown in thepresent embodiment of the invention, a fixture including alamp socket of particular form, it is not to be restricted of the socket'fchamberin the fixture.

dimensions The tightening of the screw fastens an'sagoeo ,It is v.furtherzto beunderstodd :thatmyiinven- .tion is, not to belimited tojthe precise form'here-r in shown and described, :since it. anay :be embodied in various other forms .of .:cons.truction supporting surface 'and ,a lamp gsocket holding portion :provided with a :lateral opening,-said shell having .a small interior. .:recess and a :bore

. entering said ,recessfrom theginner ;face of said shell,1a;lampsocket;includingxan insulating body,

switch .and .lamp receivingfscrew shell, wfitted sidewise ,in .and seatedi on ;the .floor of. said :por-L- tion with its .screwshell .in register :with' said opening,;said insulatingzbody being provided with agshoulderga clamplhaving one end :seated incsaid interior =recessand its -.other end engaging said a shoulder on said insulating body :anda sz zrew mounted in said boreq-andfihrea-ded,through the seated end of said clamp in said recess for holdingsaid 3lamp;.socketlin fiixed position in said shell. p 1

2. In a device of the character: described, the combination of a hollow shell of insulating material comprising a base portion having an ;in-' terior, angular recess and a projecting socket holding portion provided with an opening, a lamp socket mounted in said projecting portion in register with said opening, a clamp having; one end engaging said lamp socket, a convenience out let formed in said base portion and comprising e a pair of contact chambers opening out said angular recess in said base, a pair of parallel jack with a blade portion positioned in the slot com- I municating with said chamber, an insulating cover in said angular recess-for closing said contact chambers and for holding said contacts therein, the lower edge of said cover projecting] into the angular portion of said recess and a screw mounted in said base for fastening said cover thereto and for fastening said 'clamp to lock said socket against movement.

3. In a device of the character described, the

combination of a hollow shell of insulating material comprising a base portion having an interior angular recess and a projecting socket holding portion provided with an opening and with a floor recess, a lamp socket mounted in said projecting portion in register with said opening, a right-angled clamp having one. end engaging said lamp socket and its otherend seated in said floor recess, a convenience outlet formed in said base portion and comprising a pair of contact chambers opening into said angular recess in said base, a pair of parallel jack blade slots opening out said shell from said chambers, a pair of contacts loosely mounted in said chamblade portion positioned in the slot communi eating with said chamber, an insulating cover mounted in said angular recess'for closing said contact chambers and for holding said'contacts therein, the lower edge of said cover projecting a screw mounted in said base for fastening said cover thereto and for fastening said clamp, said screw having its end threadedthrough the seat ed end of said clamp obliquely to force the other .end ofsaidplamp downwardly to lock said socket in fixed position.

,4; A- device .of the character described comprisingza hollowshell of insulating material having a;;projecting iportion :providedwith an opening and-amecessinitsi'floor and having'a thickened portion provided withv an'iangular recess .in its interiorgface, adamp,socketemounted in said *projectingportionain register with said opening, /-a.-clamp-having'one :endi mounted in said recess pairiof-contactgchambers;formed in said thickened portionofsaidshelland opening out said angular recess, a pair of, parallel vjack blade slots ,openingqoutwardly from said contact chambers, aqpair ofacontacts mounted, loosely in said chambers, ,each, of said contacts being provided with ca'ablade portion positioned in the slot communi- 1 eating: withsaid chamber, an insulating" cover imountedinsaid angularrecess forclosing said contact;.chambers and for holdingsaid contacts,

thereimandga screw for-fastening said coverto said thickened portion; of said shell with its lower e l e ,inas id c arc ss; he i n r rend of said screw being threaded through that arm 7 of the clamp within said floor recess for fasten ing said clamp in operative position to lock said socket against movement.

5. A device of the character described comprising a hollow shell of insulating material having a projecting portion provided with an opening and a recess in its floor and having a thickened portion, a lamp socket mounted in said projecting portion in register with said opening, a clamp havingrone end mounted in said recess and its other end engaging said lamp socket, a pair of contact chambers formed in said thickened portion'of said shell, a pair of parallel jack blade slots opening outwardly from saidcontact chambers, a pair of contacts mounted in said chambers, each of said contacts being provided with a blade portion positioned in the slot communicating with said chamber, a cover mounted on the interior'face of said thickened portion for closing said contact chambers and for holding said contacts therein, and a screw for fastening said ing an insulating body having a hollow projecting portion provided with an opening, a lamp socket, including a lamp receiving screw shell, fitted and seated in said projecting portion with said screw -and itslother end engaging said lamp socket, a

shell in'register with said opening for receiving a lamp bulb inserted through said opening, a clamp having one end engaging said lamp socket, a pair of contact chambers formed in said insulating body and opening out the front face of said body through a pair of parallel jack-blade slots, each of said chambers, opening out on two sides on the inner face of said body for permitting the insertion and seating of a contact therein, a cover for holding said contacts in said-chambers and means for fastening said cover to said insulating body, said means being adapted for fastening the other end of said clamp to said insulating body to a hold saidso'cket firml seated in said roec in into the angular portion .of said baserecess and y. p J t g ing. an insulating body having a hollow portion with an opening therein, a lamp socket, including a receiving screw shell, fitted and seatedin 7 said hollow portion withsaid screw shell in register with said opening for receiving a'lamp bulb inserted through said opening, a clamp having an endengaging said lampso'cke't, a *con? venience plug contact positioned in a chamber formed in said insulatingbody, 'a'cover for holdv ing said contact in the chamberQand a'single ing an insulatingbody having'a hollow portion member engageable with'the clamp and thel cove r for securing the same'to the insulating body whereby the socket and plug contact are secured and held in'position by said single member;

8. A device of the character described compriswith an opening and a recess therein, a lamp socketincluding a receiving screw shell, fitted'and seated in saidhollow portion with said screw shell in register with said opening'for receivinga lamp'bulb inserted through said opening, a clamp havingan e'nd engaging said lamp' socket and an angular extension received in the recess'of the insulating body, a convenience plugcontactpo's'i tioned in a chamberfo'r'medin said "insulating body, a cover for holdingvsaid'contact in the charnber, an rnear s'engageable'with theangular extension'of the clampiors'ecuring' the clamp and cover to the insulating body to hold said socket and plug contact-in po'sitionwithin the insulating body. v v

9. A device o f the character described comprising an insulating body having a hollow portion with .an openingand a recess therein, a lamp socket including a receiving screw shell, fitted and seated in said hollow portion with said screw shell in registerwith said opening for receiving a lamp-bulb inserted through said opening, a

clamp having 'an end engaging said lamp socket and an angular extension received in the recess of the insulating body, a convenience plug contact positionedin a chamber formed in said insu-V lating body, a cover for holding said contact in the chamber, and means engageable with theangular extension of the "clamp for securing the clamp and cover to theinsulating body to hold said socket and plug contact :inposition within the insulating body, an edge of the recess form ing a fulcrum for the'clamp.

' ARTHUR JOHNSON.

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