US338137A - Edson l - Google Patents

Description

(No Model.)

B. L. BRYANT, ARGAND LAMP.

Patented Mar. 16, 1886.

N. PETERS, Phulo-Ullvognpllr. Walh'mghn. D C.

I 5 ed to be applied to a pottery or other stand- UNiTED STATES PATENT OFFICE.

EDSON L. BRYANT, OF ANSONIA, CONNECTICUT, ASSIGNOR OF ONE-HALF TO VALLACE & SONS, OF SAME PLACE.

ARGAND SPECIFICATION forming part of Letters Patent No. 338,137 dated March 16, 1886.

Application filed May 18, 1885. Serial No. 165,796. (No model.)

To all whom it Wmy concern.-

Be it known that I, EDSON L. BRYANT, of Ansonia, in the county of New Haven and State of Connecticut, have invented a new Im- 5 provement in Argand Lamps; and I do hereby declare the following, when taken in connection with accompanying drawing and the letters of reference marked thereon, to be a full, clear, and exact description of the same,

and which said drawing constitutes part of this specification, and represents a side view, half in vertical section.

This invention relates to an improvement in that class of lamps in which a round or tubular wick is employed, and air admitted in side the wick to aidin combustion, commonly called Argand Burners, and particularly to that class in which a central tube extends up through the fount and burner to deliver air to the flame above the wick. In some cases in this class of lamps a disk, commonly called a button, is arranged over the mouth of the tube within the wick, to deflect the air from the tube to the flame. In other cases an auxiliary tube is introduced into the top of the tube, of somewhat less diameter than the tube, and extending above the top of the wick or base of the flame, the extended portion being perforated, so as to distribute the air upon the 0 flame at a considerable distance above its base. Such auxiliary tube complicates the construction of the lamp and burner, and because of its removability is liable to displacement. For perfect work, it is necessary that the extended portion should always stand in a perfectly-concentricposition totheflame. Again, the auxiliary tube adds considerably to the cost of the lamp.

' The object of-my invention is to overcome 0 these difficulties; andit consists in making the perforated extension of the central air-passage an integral part of the central tube itself, and as more fully hereinafter described.

A represents thelamp-fount, which is adaptard, and through which air may be admitted to the bottom of the fount. In this case the fount is designed to be supported by an annular flange, a. The construction of the fount, however, constitutes no part of my invention.

Through the fount is a central vertical tube, B,

open at the bottom, and extending up through the top of the fount to a considerable distance above the base of the wick. Above the fount, and surrounding this central tube, B, is an 5 outer tube, C, which forms an annular space around the inner tube, and into which the tubular wick D is introduced in the usual manner, the wick being adjusted by a ratchet, E, or otherwise. Surrounding the outer tube is the chimney, gallery, or rest F, which may be of any of the usual constructions.

The upper end of the tube C forms the base of the flame, the wick projecting above the end of the tube to a sufficient extent for the flame, it being understood that the wick surrounds the inner tube, B, and extends down into the fount, so as to take up oil therefrom.

The tube 13, as before stated, is of suflicient length to extend above the upper end of the surrounding tube C, G indicating such extension.

The portion G of the tube which extends above the outer tube, C, is finely perforated, as shown. The perforations may extend below the base of the wick.

The upper end of the tube B is closed by a disk, cap, or plate, H, and so that air passing up through the tube 13 will pass radially outward from the tube directly into the body of the flame, which surrounds the extension of the tube. Preferably the top or closed end of the tube is provided with an annular flange, 1), projecting radially outward, the tendency of which is to spread the flame to some extent, and also 95 confine the air directly to the body of the flame; but the projecting flange may be omitted, the tube terminating in a closed end. 7

The tube B is made as one continuous tube from bottom to top, including the perforated extension; hence, when fixed in the lamp, mu st retain its concentric position with relation to the wick, and cannot be changed therefrom, and therefore is not liable to the objections due to the accidental displacement of the aux- 5 iliary tube before referred to.

In some cases the central or inner tube does not extend down through the body of the lamp, but is open to the atmosphere at some point above, aconstruction of Argand lampburners IO( too well known to require illustration or particular description in this application.

5 tegral part of the tube, may be applied to any of the various classes of Argand burners.

From the foregoing it will be understood that I do not claim, broadly, a lamp having a central passage extending up through the 1o burner above the wiclrtube, the upper end of the passage opening through perforations to the flame; but I am not aware that a lamp has been constructed having the outer wick-tube with a central tube forming the inner wall of the wick chamber and concentric with the outer tube, the said inner tube extended above the outer tube, the extension being an integral part of the inner tube, and the extension perforated as described in this application, and

constituting the essential features of the invention; but

What I do claim is 1. A lamp havinga central continuous tube, B, Vertically through it,open at its lower end,

closed at its upper end, a tube surrounding said central tube to form a wick-chamber between the two,'the inner tube extending above the outer tube, the portion of the inner tube projecting above the outer tube radially perforated, and the upper end of the projecting portion of the tube constructed With an annular or radially-projecting flange, b, above the perforations, substantially as described.

2. In an Argand lamp-burner having the central tube open to the atmosphere at its lower end, a tube surrounding said central tube concentric therewith to form a wickchamberbetween the two tubes, the inner tube extended above the outer tube, the extension being in the same piece and an integral part 40 of the said inner tube, the portion of the inner tube projecting above the outer tube radially perforated, substantially as described.

EDSON L. BRYANT.

Witnesses:

F. L. GAYLORD, W. O. BARCLAY.

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