US1237187A - Holder for incandescent electric lamps. - Google Patents

Description

HOLDER FOR INCANDESCENT ELECTRIC rims.

' To auwliama mag concern Be it known that I, GEORGE EnwamiFAR-v a subject of the King of Great Britain "and Ireland, and a resident of the city of Perth, in the State of vWestern Australia,

Commonwealth of Australia, (whose'postv v oifioe address is 34 Colonial Mutual-Cham- I bets, St. vGeorges Terrace, in the said city of -Perth,) have invented certain new and useroveme'nts in vHolders for' Incandescent E ectric Lamps, of which the following i v is a specification.

,Th" invent1 n relates',to j holders for in candescentelectric lamps andlhas for its v i i incandescent, electric lamp holder may be, at-

objectltoprovidesimple means whereby an i tached to the flexible cords carrying [the andfeifectivemanner. :20.

' 1 shrouded flexible wires, in an economical By the invention it is not necessary to use aspecialfitting for use with a lamp .holder I sus endedbya flexible cord and a separate fittin for use witha lamp holder suspended by'a' racket, the fittin according to the invellition being applicab e to both purposes.

vweight of thelamp and holdershould'not be 7 carried by the contact ends of the jfiexible wires, which are secured toflthe usual-termipractice it is well established that the nals by set" screws To obviate this it has a beenusualinlarnps suspended by flexible cords to externally'thread the metal neck of v the lamp cords, the lug being the neck 0 the lamp older. As'the cap or holder to accommodate an internally threaded cap or-ferrule, usually made with atapering top to clamp a wooden plug or a divided p ug placed around the, flexible artially enveloped by ferrule'is screwed onto thethreaded neck it engages theplug securely clamping it onto v the flexible cords, thereby relieving flany "strain on the contact ends of the wires, the

weight of the lamp and-holder being sup-' ported by the flexible cords at that point where the plug securely engages it; I

In the type of lamp: carried by a bracket it has beenus'ual to internally thread the j neck of the larnpholder which is then x I screwed onto an externally threaded exten- 5 sion of the bracket. The rigldit ofsuch a 7 connection has at times led tot e destruc vibration or shock. 1

y Figure l is an, enlarged sectionall'elevation UNITED STAT-Es PATENT onrrca i l GEQBGE EDWARD or'rnnrm wns'rnan tamin Specification. of Letters Patent. 3 i

Application filed A a-1111,1917; seriai wb. craae. i

"can, of the incandescent electric lamp' due to,

of an incandescent electric lamp" holder with the invention applied. A'flexible cord by l which theho'lder is suspended islshow'n. ,7

Fig. 2 1s a part sectionalfelevationof a r "P P p gi l mp'holder' with g t e a invention applied th i 1 Fig. 3 is an enlarged elevation offa plug used with the invention.

Fig. 4. isanjenlar'ged section of same show- 'ing the central hole 1 and the serrations or flutings therein, also longitudinal grooves I that may be used if desired.

Fig. 5 is an enlarged elevation of a modi -i. fied plug made in two sections 1 W Fig. 6 is anenlarged end' elevation of a wedge used with the invention.'

Fig. 7 is an enlarged side'elevatioriflofthe wedge showingserrations or fiutings therein also longitudinal grooves that ma'y'lieu I ifdesir dn Y i The invention includes a lug. A "of non conducting material such as liardwood, vulcanit'ef porcelain, or the" like," which may be of any. suitable shape butlis :preferably of circular" formation andadapted to A fit snugly within the neck G 'of'th'ellainp holder D. The "plug is also provided :with a step or shoulder 13' and a central hole for passageway indicated at E on the drawings;

The interior of the plug which "surrounds the central holeindi cated at B may, if-desired, rbe rovi'dedwithserrations or flutings F. with longitudinal grooves" G t may alsobe provided, if desired, I 1 I 9o According to a modificat on the plugA may be divided into two sections respectively marked'A? and A, as illustrated in Fig.6

of the drawings. v I

The invention also includes'fla wedgeH which may, if desired, be provided with fiutings J and if necessary withlongitudinal grooves K.

The invention is applied as, follows:- The ends L of the :flexiblewires' M shrouded. in the flexible cords N' are strippedlforelectrical contact. The plug is then inserted cords N are then into the top of the lamp holder D and passed through the neck C thereof, until the step B engages the tsp of the holder. The flexible threaded through the central hole E of the plug and the stripped ends L of the M secured to terminals in the ordinary manner b set screws 0 or the like. The wedge H is t inserted between the two flexible cords and is forced into the bottom f he, glue untilthe fl l cards ar secure y retalned therein, The various parts of tllie holdgr are the; connected by liege usua. i the. 01' int. mann r e holder is then ready for T disconnect the holder it, is mer ly necessary to slacken the usual union S remove the Wedge,

push the top of thel old'er upwardly along the flexible cords and slacken the set screws 0 n t e eu'swme y manne When the invention, is to be a plied to a p hol er upported y a, brao et as illustrated in 1g. 2 t is attached in the manner already described, except that the plug A is within the usual tube of the bracket R until the. of the neck C of the hog e ngag s. t ,t om of th b V 1 the nedlr thereby preventing any lateral pla 1 'I he wedge I-I facilitates insulation between the ends of the respective flexible o ds by keep g he s id d apa y using the serrations or flutings F in plug A an the e r i s or ut ng J Q Wedg the flexibe cords N are more securely retained in position in the ug. e use of the longitudinal grooves & m h 111 A. and th l ng t d na g o K in the e ge H enab es t e h lder to acco m da flex le o ds. of rying ize r ilfrefl-llar diameter and also prevents the hol er from V rotating around the flexible k n h pl A i A ma gt e u I in two sections and A as, shown in 5 the plug ma, be gassed into the neck 7 of the amp ho der without removin the ends L of the flexiblIeIwir-es M from t e terminals.

aving 110W described my invention What I im as new and sir to Secure y L ters atent is z? 1., Improvements in holders for incandescent electric lamps, consisting in-a plug adapte to engage the top of the holder and to accommodate flexible cords, in Combination with a wedge inserted upwardly within the plug and frictionally Sn ported between the flexible cords to hold t e latter within the plug.

2, Improvements in holders for incandescent electric lamps, Q0llSl$ 1Hg 1 Flu he a tep t s o r e a int rn mm ho e and. an inte l serra ed su face, said plug being adapted to engage the ac ca e fits s ugly thin' top of the holder and to accommodate flexible cords, in combination with a wedge inserted upwardly within the plug and frictionally supported between the flexible cords to hold the latter within the plug.

4. mprovements in holders 'for incanescen l ct emps, i i g n a P adapted to engage'the top of the holderand to accommodate flexible cords, said plug havin a step at its lower end to engage the top 0 the lamp holder and a central hole, internal longitudinal grooves and an internal serrated sur ace thereon, in combination with a wedge adapted to retain the flexible cords within the plug.

5, Improvements in holders for incandescent electric lamps, consisting in a plug formed in two sectionsand adapted to enage the top of the holder and to accommodate flexible cords, in combination with a wedgp situated between the flexible cords to reta said flexible cords within the plu and support the weight of the lamp and he der.

6. Improvements in holders for incandescent electric lamps, consisting in a plug adapted to engage the top of the holder and to accommodatefiexible cords, in combination with a wed situatedbetween said flexible wires, sai wedge having serrations on its sides;

7. Improvements in holders for incandescent electric lamps, consisting in a plug formed in two sections and adapted to engage the top of the holder and to accommodate flexible cords, said plug having a step at its lower end to engage the top, of the lamp holder, a central hole and longitudinal internal grooves, an internal serrated surface, in combination with a Wedge having serrated sides and adapted to retain the flexible cords within said plug.

8. Improvements in holders for incandescent electric lamps, consisting in a plu ,1l1 g 'sorra ted sides. dnd'longitudinal grooves descnt electric lungs, consisting in a plug adapted .to enga%e 6 top of the holder and havmg a contra hole to accommodate flex1- ble cords, said plug having anexternal Step, 5 internal serrations and internal longitudinal grooves, in combination with a wedge havible wires to ret and holder.

In gestimony w dim: what an be obtained to: 1m cents mm by addressing l U n m plug and support and arrangod to Be placed botwoen; the flex- I ain saidwirs within the the weight of thelamp 1Q GEORGE EDWARD FARRAVB. I

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