US893873A - Incandescent-lamp socket. - Google Patents

Description

No. 893,873. PATENTED JULY 21, 1908. W. F. BITTER.-

INGANDESGENT LAMP-SOCKET.

APPLICATION FILED HAY13. 1907.

in-Vania] new;

' To all whom it may concern? UNITED STATES @FFTCE.

WILLIAM F. BITTER, or CINCINNATI, 01110.

' INCANDIESCENT-LAMP SOCKET.

Specification of Letters Patent.

Patented July 21, 1908.

Application filed may 13, 1907. Serial No. 373,425.

-i3eit known that I, WILLIAM F. RITTER, a c1t1zenofthe United States of America, and a ,IQ-SldGHl) of Cincinnati, in the county of {Hamilton and State of Ohio, have invented certain newand useful Improvements in Incandescent-Lamp Sockets, of. which the following is a specification.

This invention relates to an improvement tin i c ndescent electric-lamp sockets, and

- its object is to relieve the bared ends of the suspension electric feed-wires of any tensile or other strain and to supply a thorough insulator lining and barrier within the dome vof said socket inwhich the lower divergent T "ends of said lam wires. house and pass to 'lamp corda duly knotted in accordance with partition with a the lamp-termina s. p I

The invention consists in the provision in connection with an incandescent electric lamp socket, of a lining made of fiber or other suitable insulating material, suchv being shaped so that its body portion conforms to the interior of the dome portion of said socket and its central portion'being extended downward to form a transverse erforation in said body portion at either si' e of saidpartition, whereby the lower divergent ends of, the untwisted portion'of the lam -ecord are permitted to pass downward an then knotted on the interior o'fthelining, with a: knot at either side of saidpendegnt artition and with the extreme lowerge s of. said; divergent wires dulybared of insulation for proper connection with the terminalsofithelamp-socket.

In the accompanyi, drawings, Figure 1 is a transverse section ts on on the dotted-line b, b, of Fig.;,-2 ,'-of ,the ic'ap portion of a lamp- ..socket =-contam ing Tiny mproved insulatorlining and ehowing'f a fragmentary ortion of the lamp socket shell and, also, t e two the plan f and*purpose of my invention herein Fig. 2 a-bottorn-sectional plan taken on the dotteddineaa of Fig. 1 slmiwing the socketcap, my improved insuletordinmg therefor and my improved rnanner of knotting the lower-ends ofthef -lamp -wires within said lininggFig. 3, a die-gra of-a piece of insulator materiahfshowing it a'si't appears prior to being bout and sha dinto the form seen in Fig'. l"-Fig. 4,5. plain view of the blank shown in ig33, but with the next step taken in its process ofbending or she 'ingi, such bending beingFta-ken on thepa'ral el ottedlines seen in ig. 3; Fig. 5, a bottom'plan of, the opposite ends 7, 7 being semicircular ward through the insulator-bushing 4i and view of the insulator-lining, in its finished state; and Fig. 6, a side elevation of the insulator-lining as it appears when fully shaped.

In these views, 1 represents the u per portion ofithe customary metal shell oi a lampsocket; 2, the metal cap, of dome-shape and telescoping the upper end of said shell for suitable attachment thereto; 3, the usual .hollow boss or metal protuberance on the cap 2; and 4, the usual insulator-bushing in the protuberance 3.

- 5 represents a lining of fiber or other suitable insulating material placed within the dome of the cap 2 and preferably shaped to conform to the inner face of said'dome. This lining is com osed of a strip of material cut into the blan fol-in seen in Fig. 3, with the V- shape indentations 6, 6 at either side thereand with twov erforations 8, 8 made therein at a suitable istance a art from the center of the blank. A centra pendent-extension,

forming a partition '9, is made in the blank,

the'bends in the blank, to produce such partition, being made on the three parallel dottedlines 1Q, seen in said Fig. 3 and the outer walls 11, 11 of the lining are produced by concaving the semicircular ends 7, 7 of the blank so as to roperly fit within the cap 2 as best seen in ig. 1. The material comprising the linin is made pliable between the two semicircu a1 concaved ends so that the bends may be readily made therein for producing the partition 9, and the whole is readily inserted into place within the cap 2 sothat the holes or prforationsS, ,8 ,ap' roach, with a space between them, just be ow the orifice or ppssage-way of the bushing 4, as best seen in ig. 1; ThepartitionQ serves as a ready means of i'landhng the lining to and from place in the dome of the cap 2.

' The lamp-cord composed oi the two insulated wires 12, 12 as customary, passes down and the central partition 9 duly insulates the two knots l3, 13 from each other, such partition also separating said knots from each other to prevent abrasion, or rubbing or bear ing contact with each other. The Weight of the lamp and its supporting-socket is entirely on the knots 13, 13 made in the cords, so that there is no tension Whatever on the bared connecting ends of the Wires With the lampterminals, thus preventing .ny undue separation of said bared ends from thelarn'p-terininals and any consequent sparking or shortcircuiting Within the lamp-socket device. The knots 13 are readily made in the cords and, being single ones, do not occupy materiel EOOHIOI space Within the upper chamber, such as might be the css-e ii' the central partition 9 were omitted and a single knot made in the twisted double. cord that would then pass through but a single central hole in the lining.

1. in a device of the character described, a lining composed of insulator material With its outer Walls sh aped to correspond to the dome of said device and having a central, pendent transverse partition with a holeor perforation'at either side said partition for the pascords.

aracter described, a dome-cap of an.1ntesage of the separated lam 2. In a device of the c the combination with rior insulator-lining, transverse central partition made therein and a perforation at either side of said partition, and lamp-cords, each havin a single knot made therein and each passing through one of said perforations in the lining.

3 In a device of the character described, a socket-cap lining 0on1 osed of a blank of insulator material, suc blank having semicircular opposite end-sections, V-shape indentations at either side and intermediate said end sections and two perforations made therein a suitable distance apart at either side the center of the blank, such blank be ing adapted to be folded along three parallel lines to form a central transverse partition in the blank-When shaped for use said device.

WILLIAM F. BITTER.

Witnesses:

Jonn ELIAS Jones, NORMA Knisnn.

such lining having a-

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