US975935A - Arc-lamp. - Google Patents

Description

T. L. CARBONE.

, RG LAK?.

Hummm! Num ma. 19, 199e.

Patented Nov.15,1910

v-rrl ESSES Q l Y i.

TITO LIVIO CARBONE,.OF CHARLOTTENBURG, GERMANY.

ABC-LMP.

Speeieeon of Letters Patent.

' fw *a applicati@ med Mam 1s, 1909. rial no. 484,552.

Patcntdlov. 15

To 'all i/om 1' t may concern: Be it known that I, Trio Livio Cannone,

'n citizen of the Swiss Republic: residing ,at

( linrlotlenlnn'g. near Berlin, Germany, have invented certain new and useful Improvements in .irc-Lamps; and l do hereby declare the following to be .fr full, clear., and exact description of the invention, suc: as will enable others skilled iii the art to which itnppertains to maire use the same.

The presentinvenion relates to arc lamps for lowr lighting hours and llas the object of keeping clean the part ot the globe from to obscnre the arc.

which the light mainly issues, especiallj7 in case of the employment of impregnated cnrbons.

The use of the flaming a rc is connected with the disadranmge of requiring a globe or inclosure for lie ereg-:mil the vapors invarialil'yv givenotl by the flaming are 'of impregnated or other carbons yield deposits which cloud the transparent. Walls and tend Attempts 'have been made to overcome this diiculty by utilizing the heat of the arc to set up a vigorous circulnion of the-gazses'at t-lic interior of ille globe by providing a more or less highly organized exterior circulate?? system for ile purpose of returning the ,Clases which 'nare been forced out at the tonto the, bottom of tile globe. These gases ca ry the vapors :1v-'a5' from tite :irc and dep sit tile condensati i in the cooler parts ci the circuultoiy sut-.siem arranged to receize them outside of the arc-inclosing globe itself. In such attempts as have been made to carry ont tliis'arrzingerncnt, :i number of difficulties have been encountered. For instance, some definite construction must be employed for the purpose of returning' the gases downwardly from thc are to the lower end of the globe. These channels .oeeessarilv` obstruct the an more or less and preventit from delivering iis full illuminating eiiect, cutting down its eiiiciency and in some iiistances costing: large shadoirs.- These diiliculties are independent, of the complexity and elaborate structures that become neces' sary. Y

The objeel of the presentinvention is to eliminate these difficulties and attain the de.- .sired result in :i more direct4 manner and by simpler and ex'iensive means.

As a result of :noch testing and experimental work,'xne:ms were devised whereby the (lesite-l result. may-be accomplished and simplified.

at the mine time the circulatory .sj-siem much The necessity of any outside duct or ducts for the. return of the gascs to I the lower portion of the arc-space is dispensed with and the Whole structure simplified by redncing the same to a le globe or inclosure which is provided rality o chambers suitabiyconnee embodiment of my invention .T given excellent results, has three smh -cham bers arranged one above the other, the middle chamber being transparent and containing the arc, which cliarnoer, for the best livht emitting and distributing may be conical in shape with the walls preferably brought, into more or less nroximity io the are, so as to better subserre me eorts of maintaining its surface free from deposits. i

It is thought that the gases rising around the upper electrode are cooled in the upper chamber and fumes deposited therein and t at tlie cooled gases llow along ille outer part of the globe adjacent to the well. The heat adiacent tie arc would ne ,sueient to prevent the deposit of the fumes, bn.. around the lower electrode the den of "as '-sounl he qualities.

slow enough to permit suspenda: particles to fall in the lower chamber.

Tests have been conducted with diicrent makes or' impregnated arc-carbone with uniform insulter-the globe remaining clear for upward or' 3.50 hours, and this with a single trim or supply of carbons. I have found tiatexcellent results are obtained vwhen a depositing space is provided both a'oove and below. lt was soon found that when one or both Y chambers were omitted., the deposit would encroach and would partially obscure the lightemitting. wall surrounding ille are. As a means of securing'a, clear line oi demarcation of the'deposits and preventing their encroachment upon the transparent wall immediately surrounding the arc, a change of angle or inclination of the nali with respect to the. are or general aline' ment of electrodes is found eectiy, and an inner ridge or contraction will acc-n this result.- Of course,'a clear lin o cmarwtioxr is not n all cases necessary, :uid any means of confining, to a greater or less extent, the deposits, y will fulfil the conditions,-the necessary feature being an organization whereby the phenomenon of diffusion operates to carry the vapors produced at the arc away from the light-emitting wall l s i l l l l i i before they are condensed and the oxids or other solids deposited.

The present invention consists in providing :i separate chamber for the are bj: ornr ing zx, series of circular contractions in the globe, vso that it. is divided into several snperposed chambers. By this device tlie heat of the are is concentrated in the middle member, butat the same time the walls of elle middle chambers are protected by their conical shape against decomposition and can therefore be arranged closer to the are ing partl;` of glass and partly of metal. than was possible hitherto. The advantage of this arrangementis tl'iat no gases are coninclosing the are.

Figures l 1.o l of the accompanying draw- Y orugas contractions in the Wall. the middle chamber l having the. shape of an inverted cone and its into a plurality of snperposefl chambers by ings slioir several dillercnt forms of globes according to my invention and it will 'ne nndorstood tliaL the globe may taire-.a great many dill'erent forms withoutdepartingr from the spiritof the inventio i A, E, C are tliethree chambers partiallydivided into three superposed chambers bj,YV separated by the contractions :n the all of the globe.

of a .suitable metal. It has been found by xperixnent that, with this arrangement, the z lower chamber immediately below the transu P condensed gases from the imoref'nated carlions :ne deposited only in the upperand integral therewith. lower chambers A and C, While the Wall of g the chamber B remains free from deposit use with impregnated orflame-arc carbone,

and tllerefore transparent.

1n .r rg. l the part of the Wall of the globe marked D.

I claim:

l. An arc-lamp globe specially adapted to the use of impregnated carbons,.and divided into a plurality of snperposed cliamlrfers bv die chamber aving a transparent wall surrounding tlie arc closely for preventing the gases produced by the are from condensing on said walls.

2. An are lamp globe specially adapted to ile use of impregnated carbons, and divided lato three superposed chambers by suitable These chambers may lie made j chamber haring a. transparent wall surwnolly-oi glass or partly of glass and partly I suitable eontigumtion of tlie Wallgtlie. walls of the, ninulle chamber surrounding the are as closelY :is possible, the sind walls consist- 4. ln :in arc-lamp, a globe or inclosnre for use with impregnated or llame-are earbons,

denied o'n the Walls of the middle chamber divided into three snperposed chambers by suitable contractions in the walls, the middle chamber Having a transparent Wall snrroitniin; le. are. and a S.-paration or joint at the upper @nl of the middle chamber lietween it and the clian'zber above.

5. In an arc-la nip, e. globe or inclosure for use with impregnated or fianie-are oarbons,

suitable Lenti-actions in the walls, the middle rounding the are, an upper chamber separated from said middle chamber. and a parent Wall of the middle chamber and made 6. In an arc-lmnp, a zglobe or inelosiu'e for divided into three superposed chambers by suitable contractions in the Walls, the middle that 1s kept free et the condensed gases is chamber having :1v t1{.nsparent Wall surrounding the are, an opper chamber sepatherewith and closed at the lower end. suitable conti vnration of the \rallstlae niid- TITO LIVIO CARBONE.

Witnesses ll' emanan HAUPT 7 Hman HASH-1R.

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