US502704A - James b - Google Patents

Description

(N0 Model.)

JfB. COLT;

l LAMP BURNER. 10.502,704.

mente@ Aug. 8,- V 1893. f

*MEE- WIT/VESES:

Afro/MEV described, and claimed.

STATES ATENT e LAMPeBURNER.

SPECIFICATION forming part of Letters Patent No. 502,704, dated August s, 1893.

Application sled Meret 11, 189,1.

To a/ZZ whom it may concern:

Be it known that I, JAMES B. COLT, a citizen of the United States, and a resident of New York, in the county and State of New York, have invented certain new and useful@ Improvements in Lamp-Burners, of which the following is a specication, reference being' had to the accompanying drawings, formingl part hereof.

My invention relates to illuminating lamps, particularly to center draft lamps and consists of a lamp burner, constructed, arranged and combined, in the manner herein shown,

` The object of my invention is to produce a bright and steady cylindrical flame by means of a disk or deflector in the center of the burner and yet avoid the shadowvand other bad eects due to a Vbutton placed in the midst of the flame. v

When lamps of the latter construction. are used in magic lanterns, an image or a shadow4 of the central button` is thrown upon the screen rendering such forms of lamps objec tionable, though, owing to the complete com; bustion produced in them, they are inmany respects peculiarly adapted "for such work. By my invention, however,-I completelydo away with this objection, and Iaccomplish my purposeby means of a deflecting or distributing disk, placed below thev upper edge of an opaque deflection cone, as illustrated in the accompanying drawings'wherein* Figure l. is a side elevation partly in section of a complete lamp, and Fig. 2. is an elevation of the lamp burner proper.

Like letters of reference designate like parts. p

B is the lamp reservoir ofany desired form, and C the wick chamber, preferablyof circular form, surrounded by the usual, 0r any desirable, air-distributing chamber D. The air enters the central chamber'from the opening c through the side of the wick chamber and passes up through the vertical tube c to the upper end of the Wick chamber. In the center chamber is placed a holder of any desired form, for my central deliector E. I prefer to make this as shown in the form of a central tube or tubes F, F in the upper ends of which is held the pin, or other support, e, of my censerin No. 391,676. (No model.)

tral deflector. My delector disk is preferably perforated. 'When in position, its periphery is somewhat above the top of the wick chamber. About the outside of the upper end of the wick chamber is thev usual grated distributing cone G, through which theouter draft rises. Around this, and eX- tending above my detlector disk, I place an opaque deliecting cone H, which curves in, toward, and above, the disk.

` yI inclose my burner, when in use for magic lanterns, in the paraboloidal case I with a glass front K. Thus I obtain both a reiiector and a combustion chamber in a single metallic piece. A similarform of combustion chamber I have shown in my prior patents, and therefore I do not lay claim herein to the same; but Ilind that with my new form of concentrating burner it serves in a new relation since, in throwing parallel rays, an absolute vshadow.(so far as the reflector is concerned) would be thrown forward with any other form of deecting disk, while with any other systemof flame deflection, nosatisfactory condensation of focus is attained. I consider this combination, therefore, of Vpeculiar advantage in the mutual co-action of the `several parts. My chimney L rises from, and in continuation of, the combustion chamber thus leaving the amefbetween the burner and the roof of the case, uninclosed by a chimney. When my lamp is burning, the central column of air rises from the central passage to the flame. Here it is deiiected by the disk E toward the cone H and meets the current rising fromthe outer distributer G, whereby the flame kis spread and the combustion is facilitated. The iiame,rwith the two columns of v air, deflected first outward by the disk E, and then condensed by the cone H, rises fromthe top of the opaque cone toward thezchimney as a bright steady cylinder, somewhat-asindicated in the drawings in dotted lines. Th'e perforations in the central deiiector serve to,

allow more air to pass up lfrom the center and prevent the vibration that 'is sometimes caused by the rarefaction in the space just above the center of the disk. This featureis not however essential.

My burner differs from a burner having two deflectors in the same plane, because in IOO the latter there is neither expansion to give combustion nor condensation to give intensity, for the deiecting tendencies neutralize each other and only great steadiness results. My invention diers also from burners having glass chimneys provided with a spherical portion and a button or deilector for increasing the size of the flame within such spherical portion. Expansion and not condensation is the result desired on such forms, and the flame cannot be raised into the cylindrical portion of the chimney without smoking. The flame produced is a soft sphere or rather lower hemisphere of light upon a short column, Whereas my flame is expanded at the very moment it leaves the Wick, in order to receive the greatest amount of oxygen and then condensed to burn and give forth light after passing the top of the opaque cone. The only visible portion of the flame is therefore the cylinder projecting from the cone.

It is obviousthat my invention may be used and applied to a great variety of burners, but,

Having described one form of myinvention and hors7 it may be used, I claim, broadlyl. In combination, an Argand or central draftburner, a central button supported above the Wick thereof, for projecting the llame beyond the annular Wick, and an opaque deiector extending above the said button and over the said Wick, substantially as set forth.

2. The combination of an Argand lamp burner provided Witha central dedecting disk or button for expanding the :flame immediately above the wick, and provided with an opaque deilecting cone or screen extending above the button and over the Wick, and a paraboloidal reflector provided with a transparent front and forming a combustion chamber for the said burner, substantially as, and for the purposes set forth.

In testimony whereof I hereunto set my hand.

` JAMES B. COLT. Witnesses:

G. M. PLYMP'roN, HAROLD BINNEY.

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