US903401A - Electric-lamp-shade holder. - Google Patents

Description

F. OVERBAGH, F. E. AYRES & I. BRENT.

ELECTRIC! LAMP SHADE HOLDER.

AYPLIOATIOI I' ILED APBJO, 1008.

Patented Nov. 10, 1908;

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BRENT,

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1T0 all whom it "may concern:

' Be it known that we, Fmnnmrc Oriel:- lhtoll, loam l lgirmcs, and IRYLN l-I. BRENT citizens of the United States,- and residentd of l!l\klh$t0ll, Cook county, Hinsdule, Du page cozfifnty, and Chicago, Cook county, in the'St-atq'of Illinois, respectively, have 1niented certain new and useful Improvements in Electric-Lamp Shade Holders; and we do whereby declare that the following is a full,

cleaig'and exact description thereof, reference' being-had to the accompanying draw- I ings, and to theletters of reference n'larked thereon, which form a part. of this specifi- ISK'tItlOll.

. 'This invention relates to snadeholders of that kind used in attaching shades "to incan-.

descent lamp fixtures and more especially to means for attaching such shadeholders to lamp-sockets having what are known as standard shells without requiring any change in the construction of said socket shells.

The invention consists in the matters hereinafter described and pointed'out in the appended claims.

As shown in the accoinpan ing drawings Figure 1 is a VlO\V in side e evation of a lamp-socket and a shade attached thereto by a devrcemade in accordance with our invention. Fig. 2 is a view showing on a much "enlarged scale the lower part of the lampsocket with the shade-holder and attaching means in section. Fig. 3 is a plan section Fig. tis a detail view in side elevation of the annular body of our improved shade-holder. Fig. 5 .is a'side elevation of the clamping ring constituting part of the shade-holder. Fig. 6

is a-view. in side elevation of the socket and a form of shade-holder difi'erent somewhat from that shown in the preceding figures. Fig. 7 is a detail sectional view of the parts shown in Fig. 6. V

drawings, 5 indicates a lamp-socket of standard pattern, the shell of which is proyidd near its lower end with a circumferential rib 6.

7 indicates the body of the shadeholder which, in the particular form thereof shown,

consists of a flat ring to the outer margin of which is attached the shade 8, shown in the drawings as made of conical form. The

. Specification of Ilttera Patent.

Application filed April 20, 1908. Serial No. 428,221.

shade 8 is shown as attached-to the body 7 of the shade-holder by means of prongs 9',-

9, 9 which are cut from the hat metal body and inserted through slits, formed in the marginal. part of the shade which overlaps the outer margin of said body. Fig. 4 illustrates said prongs as being bent outwardly at right angles to the body and Fig. 2 shows said prongs as bent against the shade-holder so as to clamp the same firmly to the body.

The annular body of the shade-holder has its central opening made somewhat larger in diameterthan the lower part of the socket shell, and on the inner margin of said annular body are formed a plurality-of prongs 10, 10, 10 which extend substantially at right angles to the plane of the body. Said prongs 10, 10 are resilient or elastic and curved or deflected inwardly at thelr extremities, so

that when the body of the holder is slipped over the lowerend of the socket shel the ends of said prongs will press or bear against the outer surface of the shell. As preferably constructed the annular body 7 and the prongs 10 thereon are made of a single iece of sheet metal, such as sheet brass, an the prongs are made tapering outwardly or towards their extremities. Each of said prongs '10 is, moreover, provided with an outwardly extending stud 11. The studs 11, 11, 11 on the several prongs are arranged in spiral order, so that they together constitute what is in effect a screw-thread. 12 indicates a'clamping. ring adapted to be applied over or a roundthe several prongs and when so applied to draw the free ends of the same inwardly in such manner as to clamp the prongs against the surface of the part of the shell surrounded by the same. Said clamping rin is provided with an internal screw-threat" adapted for engagement with the spirally arranged prongs 10,10: the parts being so arran ed that when' said clamping ring is applie to the pron s and turned or rotated'thereon', it will,

with said studs, be drawn or carried towards the body of the holder in such manner as inwardl the she to force the ends of the prongl into clamping enga emen't wit In generaL-terms, t e clamping ring has adi'ustable screw connection with the shadeho hy the engagement of its internal screw-threads der enabling the ring to be drawn over the ron s and to hold or enforce the latter in 0 amp g position.-

In the=form of construction illustrated in Figs. 1 to 4, inclusive, the'said pron 10, 10 extend outwardly or downwardly g-om the annular body of the holder, and the clam ing ring is applied to the prongs beneath t e clamping ring. In this case, in" applyin the holder, the lower end of the socket shefi will be inserted through the holder 'andthe prongs until the ends of the latter pass over and bear against the inner or up er shoulder of the rib 6 on said holder. In t is'instance,

the clamping ring 12 is provided with an inwardly extending flange 13, adapted to -fit closely around the lower end of the socket shell and to bear against the outer shoulder of said rib, so that when the arts are assembled, as seenitin Fig. 2, the ends of the rongs will bear a 'ainst one shoulder of t e rib while the ange 13 on the clamping ring will engage the other shoulder of said rib, so that the holder will be firmly clamped or' held from endwisemovement on the socket-shell.

In the construction illustrated in Figs. '6

and 7, the said prongs 10, 10 are reversely arranged, 'that'is to say, the extend up-:

. wardly or inwardly from the ody 7 of the holder and, ,in thi's jinstance, the clamping ring 12 is without. any flange 13 and is applied above or inside theannular body 7 of the holder, as clearly seen in Fig. 7 In assembling the parts made as last described, the clamping, ring is first slipped over the lower end of the socket-shellandcarricd above the ribs 6 thereon. 'Theholder is then slipped upon the lowerend of the shell,

the ends of the prongs being carried past or over the rib 6.11ntil they engage the inner shoulder of said rib. The clamping ring is then, turned on screwed downwardly 'on the prongs so as to. clamp the ends of'the latter firmly against the shell and the rib, which is partially embraced by the curved ends of the prongs.

The holder embracing the features of construction above described is adapted to be -firmly and, strongly connected with the socket shell and may be easily and quickly applied thereto, p

A shade-holder attaching device embodying our invention may be variously modified wlth res ect to;it s details. of construction and we 0 not, therefore, desire to be l1m1ted to the specific features shown in the acc0m'-' the opposite side of panying drawings except so far as the same vided on its inner margin with a plurality of integral projections which extend at right ang es to the body to constitute a, series of resllient prongs, said prongs being provided each with an outwardly extending stud and the studs on the several prongs being spirally, arranged, and a clamping ring having internal screw-threads adapted for engagement with said studs. r

2. A shade-holder for lamp-sockets comprising a. flat, annular sheet-metal body provided on its inner margin with a plurality of projections which extend at right angles to said body to form a'plurality of resilient prongs, said pron s being bent inwardly at their free ends to ear against one sideof a head on the lamp-socket, and a clamping ring surrounding and having clamping engagement with said prongs, said clamping rin being provided with an inwardly extending annular flange adapted to engage said bead on the lampsocket.

-3. A shade-holder for lamp-sockets comprising a flat, annular sheet-metal body proa plurality vided on its inner margin with of projections which extend at right angles to the body to form a series of resilient prongs and are bent inwardly at their free lamp socket said pro'ngsbein each provided with ail outwardly extend stud and ends to engage one side of a bead on the the studs on the several prongs eing spirally arranged, and a clam ing ring having internal screw 1 threads at said studs and provided extending annular flange adapted to engage the other side of saidwbead on the lampsocket; v

In testimony, that we claim the foregoing as our invention we aflix our signatures in the presence of witnesses, this 17th day of April A. D. 1908.

FRANKLIN ,OVERBAGH. FRANK- E. AYRES; j IRVIN H. BRENT.

apted to engage with an inwardly

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