US485682A - Incandescent electric lamp - Google Patents

Description

(No Model.)v

A. C. CAREY. INCANDESCBNT ELECTRIC LAMP.

l a I I b ii;

Wt bz ess ew' 7 Q J v I 7 l r o l I 7 To all whom itmay concern; 1 ,Be it known thatl, Aucnsrus G.'CaRnY,acitizen of the United States, residing at Lake Pleasant, in the countyof-Franklin and State.

5 of Massachusetts, have invented a certain new and nsefullmprovement in Couplings for Securing Carbons in Incandescent Electric.

- Lamps, (for which have obtained apatent in Great Britain, dated March 8, 1892, No. 4,578,)

:9 of which the following is a full, clear, and ex;

.actilescription. t

Thisinvention relates to a coupling for uniting the carbon or cent electric lamps with the leading-inQwires,

r 5 either forpurposes of renewing the'carb'on or filament or forrinserting it in-' the .first instance; vention are to facilitate the application of the couplings to the filament,"to. secure good con-' 2 tact-between the parts united, and to insure the firm union of the coupling andleading-in wires. 1i.

' The invention consists of ,a coupling made asa metal tube preferably constricted about- 25 midway betweenuits'ends, so as to preventthe 50 be variouslyconstructed-ms, for example, by rolling a sheet ct metal'upon itself one or UNITED STATES P EN Osrrcs fAUeUs'rUs o. CAREY, or LAKE PLEASANT, M'A ssAonUsfir-rs;

INCANDESCENT steeralc LAMP.

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adhesion of the-cement supporting the couplings while the,- filament is being applied extent to which 50 wires shall enter such couplings, and thereby afiordgo'od contact between them, the said cou lings and united by-c'rimping or bending themwhe'n in position, x r 5 a In the accompanying drawings,-illustrating. v my i-nvention,'in the several figures like parts are similarly designated, Figure 1 is an elevation of a'cominon form of glowlamp supplied with 'my couplings. Fig. 2 is a '0 partly-sectional elevation, on a larger scale, of the glass-standard and the adjacent parts;

. gs large scale, of two coupling; v Thecoupliug a of thiai'nven'tiou is a tube of suitable length crimpe or otherwise constrictedaboutmidway of its ends, as at b, so as to close or nearly close its passage-way more times, as in Fig. 3; 'or,'as in maybe made byboring a straight, or. other hole-in a rod. bar, or cylinde or it maybe of tubular wire. Thetion 1) may be'formed by any suit! Of course I do not limit my inventi plying the constrictions b at exactly between the endsot the -couplings, may be arranged m ny point bet ends 'thereofi j l; r In using couplings havi'n'g no 001 when they are mounted on w'ite-su hold them up while-the filament is and cemented in thecementnppli ends of, the filament -runs down-the the couplings and cementsthe com the wire=suppdrts making it vary 6 remove the couplings without bre: filament; but'by constricting the as in this invention, the openings of lings are closed, so that the ends 0 ment 0 are sure to come into contac metal of the couplings, and the com ing the holes, fastens the ends 'oii th there, and none of the cement can the constrictions, so that the coup be removed from the wire-support fect ease and no filamentsare brok the'co'uplin'gs .arexplaced on the wires e e, inside the lamp,'and inste: pinched on they are crimped on, as: and 2. The difference between pii crimping is shown fromthe facttha coupling may getloose from the wires by heating and cooling-the expanding and contracting, incide the lamp-and drop off or result in tact, 0n the other hand, if the are crimped on the leading-in wir crimped or zigzagged, and even i lings should become alittle loose or sides are in-good contact with! in wires whether the lamp'is pm or otherwise. j

As the conplingis of electricallymaterial and the leading-in wire of the carbon or filament are sep by the constrictions in the couplir .vious that very perfectcontacts a What I claim is- 1. The combination, with tlu filament of ineandes-' and the principal objectsof t-heinto the holders for thereto and todeterminethe the carbon and leading-in leading-in wires being firmly of which 3-and 4 areperspective views, on a very forms of my constricted bent, broken down,

or opening. This coupling may wires and carbon or filament of an in'candesconstricted between their ends and connected cent electric lamp, of couplings constructed with the leading-in wires by crimping said as tubes constricted between their ends and wires and couplings together transversely, y applied tothe ends of such wires by crimping substantially as described. Q r t 5 or bending them together transversely and In testimony whereof I have hereunto set :5 cemented to the carbon or filament, substenmy band this 13th day of January, A. D. 1892; r

tially as described. I r r AUGUSTUS G. CAREY. D

2. In awn-incandescent electric lamp, the Witnesses: s combination, with the leading-in wires, and HENRYE. WILKINS,'

10 the filament or carbon, of cou plingstherefor I G. A. FREI

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