US1017641A - Arc-lamp. - Google Patents

Description

T. L. OARBONB.

ARC LAMP. APPLICATION FILED FEB. 21, 1910.

1,017,641. Patented Feb. 13,1912.

WITNE SES TITO LIVIQ CARBON E, OF CHAIRLOTTENBURG, GERMANY.

ARC-LAMP.

oiacar Specification of Letters Patent.

Patented Feb. 13, 1912.

Application filed February 21, 1910. Seria1'No. 545,090.

To all whom it may concern Be it known that I, TITO LIvIo CARBONE a citizen of the Swiss Republic, residing in Charlottenburg, near Berlin, Germany, have invented certain new and usefultImprovements in Arc-Lamps, of which the following is a specification. I

My present invention refers to electric arc-lamps of the kind usually employed where economy in the consumption of electrodes is looked for. To attain this object it is necessary to prevent access of -freslrair to the are by closing the globe, so that the oxygen contained thereinwhen the lamp is started is quickly consumed and the com-' bustion of the electrodes thereby very much retarded. As is well known in the art, great difiiculty with lamps of this kind is experienced when electrodes are employed that'are impregnated with salts or similar substances which generate smoke when the electrodes are burned in the arc. I have discovered that this difliculty can be overcome byusing an inclosure comprising several chambers and by placing the arc in one of said cham bers. W'hen this arrangement is used the products of combustion settle asaprecipitate or deposit remotely from the arc and the chamber surrounding the are remains clear. This arrangement I have described 1n Patent No. 975,935, granted to me November The present invention is an improvement over my previous invention. I find that I can obtain the desired result by surrounding the arc with a substantially hemispherical or egg-shaped globe and arranging above it a chamber preferably of a fiat parasol-like shape so that its walls are shaded from the direct radiation of the arc.

The drawing represents a sectional elevation of a lamp constructed according to my invention and showing one embodiment thereof.

In the drawing, the usual casing 1 contains the mechanism for feeding the electrodes into the arc.

- The top part of the casing is broken away as forming no part of my invention. The electrodes 0 0 protrude'downward through the bottom of the casing Z and converge'toward the are in this embodiment, whichis adapted to arc-lamps in which the electrodes are both introduced from-above and converge toward the arc in the shape ofa V. i The inclosure 9 is shaped so as to formtwo Qhamw that the smoke particles are effectually prevented from settling in the, part where the walls are in proximity tothe arc and are SHbJGCtGd to moreor less normally implnging rays and-are therefore precipitated in the part which by virtue of its shape is protected against any direct impact of the rays of light. By giving this latter part a shape as shown in the drawing, I obtain the further advantage that it is adapted to act as a lam shade, and also as a reflector. When it is desired to obtain a more perfect and con stant reflection of the light from its walls, I make the latter'of milky-glass or of any other suitable substance, such as, for instance, of enameled or polished metal.

Having thus described my invent-ion, I claim as new and'desire to secure by Letters Patent:

1. An arc-lamp burning smoke-producing carbons, comprising a closed globe having in combination. a. substantially hemispherical .chamber substantially concentric with the arc and having all its parts in close. proximity'thereto, and a chamber'having its outer part remote from the arc.

2. An arc lamp burningsmoke producing carbons, comprising a chamber entirely closed surrounding the smoke producing arc, having in combination, a substantially hemispherical globe substantially concentric to the position of the arc, and having all its parts inclose proximity thereto, whereby it is heated substantially equally throughout, and a condensing chamber having its outer part remote from the are so asto cause a condensation therein.

3. An arc la-mp burning smoke producing carbons, comprising an inclosure, surrounding the smoke producing arc and composed of two parts, a light. transmitting part in be substantiallyequally heated, and a condensing part remote. from the arc,'and cooler than the proximate light transmitting part, and in free communication therewith, whereby the coolness "causes condensation ofthe gases produced'by the arc, and the free communication causes further gases to enter the close proximity to the arc and of a shape to condensingpart and to be condensed therein. I

4. An inclosed smoke producing carbon arc-lamp comprising an arc inclosure having an arc-heated light transmitting part in proximity to the arc and substantially equally heated thereby, and a precipitation part disposed above said light-tran'srnitting part and outspreading laterally therefrom substantially symmetrically therewith.

5. An inclosed smoke producing carbon arc-lamp comprising an arc inclosure having a light-transmitting part subjected to the direct rays of the arc and substantially equally heated thereby, and a precipitation part disposed above said light-transmitting part and having a laterally xtended portion forming an annular flattened chamber distant from the arc and shaded from the direct radiation of the are.

6. An inclosed smoke producing carbon- '7. In an arc-lamp, the combination of a closed globe, and a pair of carbons protruding downwardly therein and adapted 'to support an arc vbetween their lower ends, said globe forming an approximately hemispherical chamber concentric with the arc and with all parts in close proximity thereto, and also an upper substantially horizontal flattened annular chamber merging into the upper part of the hemi-spherical cham ber, the outer part of the annular chamber being remote from the arc.

8. In an arc lamp the combination of a ing into the upper part of the hemispherical chamber, the outer part of the annular chamher being remote from the are.

9. In an arc lamp the combination of a substantially air tight closed globe, and a pair of converging carbons protruding downwardly through the upper part of the globe and adapted to support an are between their lower ends, said globe forming about said arc an approximately hemi-spherical chamber concentric with said are and every portion of which is in close proximity thereto, and also an upper flattened downwardly and outwardly inclined annular chamber merging into the upper part of the hemi-spherical chamber, the outer part "of the annular chamber being remote from the arc, the lower part of the upper annular chamber be ing of non-transparent material.

In testimony, that I claim the foregoing as my invention, I have signed my name in presence of two subscribing witnesses.

TITO LIVIO C'ARBONE.

\Vitnesses \VOLDEMAR HAUPT, HENRY HASPER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

. Washington, D. C.

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