US1771634A - Socket shell and shade holder - Google Patents

Description

ly 1930, H. HUBBELL, JR 1,771,634

SOCKET SHELL AND SHADE HOLDER Patented July 29,1930

; HARVEY HUBZBELL, an, or isnrnenronr, CONNECTICUT:

SOCKET SHELL Ann srrAnnHo nEn Y Ap lieation'fled October 27, 1927. Serial No. 229,033."

-This invention relates to an electric lamp socket construction, and particularly to improved means for mounting a lamp .shade thereon, and has for an object toeprovi do a lamp socket shell andshade frame construceon whichiis very simple and economical in construction, maybe easily manipulated to apply or remove the frame, and which-when I in normal working condition the frame is positively secured to the shell sothat it cannot be easily disconnected therefrom. -With the foregoing and other objects in view, I have devised the construction illustrated in the accompanying drawing forming a partofthis specification. In this drawa i i i Fig. 1 is a side elevation of a lamp socket shell andsh'ade applied thereto, a portion of the shell and shade being broken away to more clearly show the construction Fig/2 is a partial side elevationand partial section of the shell showing the position of the liningwhile applying the shade frame to the shell'or, removing it therefrom, and

5 also indicating'the name as about to be applied to the shell. 7

Fig. 3 is a side elevation of the lower portion of the shell and a section through the supporting ring of the frame showing how the same passes over the outer bead of the shell.

Fig. 4 is a plan View of a frame used with this construction, and

Fig. 5 is an end view of the shell.

5 The lamp socket shown of sheet metal is composed of separable body and cap sections 10 and 11 respectively carrying the usual works of which the insulating block is indicated at 12, the screw shell lamp contact at 13 and switch operating means, such as a key 14. As is usual in this type of devices there is mounted between the shell and the works and screw shell a fibre insulating lining 15 which is ordinarily made of relatively stiff material and as it is substantially cylindrical and is not easily compressed particularly if it is a fairly tight fit in the shell.

A common means of securing a shade frame to the shell is by coacting screw threads on 15116 Shfill a d a sleeve carrying the frame, In

the present construction: the screw threads are'omitted and at ltS lamp rece ving end 'theshell is provided with a pair of spaced outwardly extending annular ribs or beads 16. and 17 which maybe conveniently formed "5 by rolling them in'the walls of the shell. The shell is also provided with one or more slits 18 extending longitudinally from end across the ribs or beads and'ter'minating inperforations 19. These slits willpermit the walls of the shell to yield inwardly willpresently be describedij' Associated with this shellis awire shade frame. This'framehasa central ring 20 and'may have one or more spaced rings 21' of larger diameter depending on the sizeof the shade to be supported,and* theserings areconnected by transverse wires 22 which may be butt welded to the rings making a substantial and rigid construction.

In applying. the frame to the shellthein terior mechanism of the shell is first removed. or the frame may be applied before this mechanism has been mounted in the shell, and the fibre lining15 is partly withdrawir from the shell,as shownin Fig. 2'. Thewalls of the lower end of the shell may now yield inwardlyand the wire frame is applied by merely forcing'the ring QO over the outer bead 17, as shown in Fig. 3, the walls of the shell yielding inwardly to permit this actlon. As the ring passes beyond this head the walls ofthe shell spring outwardly under the resilient action ofthe shell so'that the ring 20 seats in the groove formed between the two beads as indicated in Fig. 1, and it is preferred that the two beads be spaced from each other a distance,substantially equal to or slightlyless thanthe diameter of the wire of thering so that the ring will. seat snugly in this groove. After the frame has been applied to the shellfthe fibre lining 15 may be moved'to itsnormalpositionas shown in Fig. l, and the mechanism or works 5 includin the screw contact 13 assembled within t e shell as indicated in Fig.1. It will be apparent that when thelining is in this position it lies and fits the shell immediately under the ribs 16 and and will.

he d the walls of the shell in the mental ea: m

panded position under any tendency of the ring 20 acting on the lower rib 17 to force these walls inwardly and permit the ring desired. 7 I

It will be apparent from the foregoing description that the structure is a very simple one and that when the lining and interior mechanism is removed from the shell the shade frame may be easily and quickly ap- .pllGClmOI removed from the shell, but when this lining and interior mechanismxis in normal assembled position the-frame .is'ffir mly locked to the shell and will-sustain'fconsid erable weight. The structureis simple'and economical, and the frame may befeasily turned to bring any particular figure orzdesign on the shade to the front ofthelamp without in any way loosening the holder, which is not true in the common form of shade holder in which there are screw threads formed on the shell cooperatingwith a, similarly threaded sleeve for securingcthe-hold- V tudinally fromsaidend to-permjitthe walls wall adjacent-its entrance end with a er to'the shell. Also due to the. lockingeffect of the tightly fittingfibre lining andthe screw contactthis connection will. sustain a considerable weight. g I 1 Having thus-set forth the nature-ofmy invention, what I claim is:

1. In a. lighting fixture, a socket-shell of outer endw-ith a pair of spaced annular ribs andhaving one or. more. longitudinalslits extending across the outer .rib'to permit the walls to yield laterally, and a. shade holder andbe held between the two ribs.

2. In a lighting fixture, a lamp socket shell of resilient sheet metal provided on its outer Y pair of spaced annular ribs, said'shell being also frame including a wiiering-yadaioted toseat provided with one or more slits-extending across said ribs to permit the walls of: the shell to yield inwardly, and-a shade holder frame including a circular ring adapted to seat and be held between the tworibsi I .3. In a lightingfixture, alamp socket: shell of resilient sheet metal provided on itswoutei" walliadjacen't thelampjend with a; pair ofspaced annular ribs, said. shell being. provided with one on more slits extending: longiof'the shell. to yield inwardly, a shade holder frfa'me including a. ring adapted, toseat be:

tween. and he held to 'the' shell by said ribs, and a lining-for the shell under. saidaribsial'id" arrangedto V retain-the shell in theexpanded condition.-

. .4. -'-In a lamp-fixture, a lamp soeketshell of resilient sheetm'etal having a painoff out Any suitable cover-ing, or shade 23 may be applied to the frame as wardly extending spaced annular beads adjacent its lamp end, said shell having one or more slits extending longitudinally from said end across the beads to permit the walls of the shell to yield inwardly, a shade holder frame including a circular ring adapted to force the shell walls inwardly and pass over the outer head, said beads being arranged to engage on opposite sides of the ring to retain it on the shell, and a longitudinally movable lining for the shelladapted when in nor: mal position under the beads to retain the shell 'in'the expanded condition and cause the beads to holdthe ring on the shell.

5. In a lamp fixture, a lamp socket shell having longitudinal slits-in its open end, a lining for said shell, a shade holder. frame comprising a ring, and securing. means on the shell cooperating withsaid lining to lock the r1ng to the shell comprising a Pall of spaced annular ribs extendmg across said slots and adapted to receive said: ring be-.

and said lining being arranged to retain said securing means in holding position to lock the ring to the shell.

7 In a lamp fixture, a lamp socket shell, a comparatively stiff and rigid insulating lining for said shell, a shade holder frame comprising a ring, and laterally movable securing means on said shell cooperating with'said ring to secure the holder to the she-ll and held in holdingposition by said lining.

In testimony whereof I aflix my signature.

HARVEY HUBBELL, JR.

Images