US820676A - Incandescent burner. - Google Patents

Description

JfB. SHBEHY.

INCANDESCENT BURNER.

APPLIQATION FILED JUNB9,1905.

v PATENTED MAY l5, 1906.

I descence by applying thereto the llame from Experience has demon` UNITED STATES PATENT OFFICE.

JAMES B. SHEEHY, OF NEW YORK,

N. Y., ASSIGNOR OF ONE-THIRD TO PHILIP C. PECK, 'OF NEW YORK, N. Y.

INCANDESGENT BURNER.

specification of Letters Patent. Application iled June 9, 1905. Serial No. 264,380.

T all whom, it m/cty concern:

Be it known that I, JAMES B. SHEEHY, a citizen ofthe United States, and a resident of the borough of'Manhattan, city, county, and

of my improved screen. Fig. 3 is a perspective view of same. A

Such mantles are usually heated to incana Bunsen burner. strated the desirability of separating such flamel from the dischargeeoriiice of the Bunsen burner by an intermediately disposed and supported screen, usually of wire-gauze, containing a multiplicity of perforations,

- through which are projected the gases-.min-

gled air and illuminating-gas-issuing from the discharge-orice of the Bunsen burner.

Such screens have heretofore been constructed of either llat or conical or dome-shaped form relatively to the said discharge-orifice and with no means to insure the projection of the major portion of the gas throu h said perforations in directions substantia ly at right angles to the sides of the mantle against which said as impinges, nor to insure such projection o the gas in a plurality of streams of substantially larger diameter than the similar streams by which they are uniformly surrounded.

I have discovered that increased candlepower is imparted to the incandescent mantle and other advantages secured by forming and disposing such screens so as not only to extend over the discharge-orifice of the Bunsen tube in a plane at ri ht angles to the central longitudinal axis o the latter, but also to extend, intermediately'of said plane and said discharge-orifice, in an approximately vertically disposed tubular form concentric with said tube and parallel with the roximate walls of said mantle and es ecia ly by introducing into said substantially tubular and vertical portions of said screen a plural- `ity of perforations, each very much larger in Patented May 15, 1906.

aperture than the remaining perforations of the'mesh of its wireauze.

Referring now'to t e drawings, A is a Bunsen burner, connected, as usual, with gasjpipe B and having centrally-disposed gasorifice C, air-ports c c, and an'annular externally-projecting bead a.

S is a cylindrical sleevefconcentric with A, supported thereby and downwardly flared to form a shutter or screen over air-ports c c.

D is a cylinder concentric with S, downwardly constricted to tightly embrace the latter, by which it is thus frictionally supported, and upwardly expanded-to form, if

desired, a suitable support lfor sleeve M, which latter carries secured thereto the studs ye e, whichcarry the usual wire frame E, by

which'thefmantle E is supported, as shown, in the usual manner.

The foregoing parts are none of them novel and are described by me only for a better understanding of my invention.

On the mixing-tube of Bunsen burner A, I removably secure a cylinder or tube G, sleeved on latter and supported by itsbead a, as shown. The lower part of G fits A closely, as shown. The upper part of G is preferably of slightly greater diameter than A and extends preferably somewhat above the discharge-orifice of the latter, or, if desired, even as much as shown in the drawings, but lit will be understood that vin all cases G must extend above the lip d of `D sufficiently to admit freepassage of the gas readily outward from H in adirection at right angles to the central longitudinal axis of the burner.

H is my improved screen composed, preferably, of wire-gauze, fittedto and supported by the edges of the discharge-orifice of G. It will be observed that the gauze H is by my improvement so shaped and located that parts thereof are disposed at a right angle to the central longitudinal axis of the Bunsen burner A and Vparts thereof cylindrically and concentrically and parallel with A, also that in the last-described portion of said screen are a plurality of perforations h h of much greater aperture than and surrounded equally on all sides by the substantially uniform smaller perforations h 7L between the meshes of the gauze.

By reason of the novel form and disposition of my screen H and thel elements associated therewith I am enabled to employ, if desired, higher gas-pressures than in the previous constructions, and this without any injurious results, but, on the contrary, with great increase of candle-power. I am also with equal pressures enabled to direct the gases from the Bunsen tube in such relation and comparative volumes to the mantles as to increase the light efliciency and durability of the latter. These results are due in part to the shape and dis osition of my screen and its perforations an also in part to the relation of the arts D and G to the outflowing gas, whereby t e jets thereof are sheltered from induced upwardly-moving air-currents. I am also by my construction enabled to separate the screen from the mantle for cleaning or other purposes, and this with consequentlydiminished rislr of breaking the mantle. Moreover, my form of construction is readily adapted for application to different styles and sizes of Bunsen burners and also with equal increase of candle-power to the use of smaller mantles than employed in other forms of construction.

In Fig. l of the drawings the relative size, proportion, and location of a mantle of the usual proportions and diameter usually required with burner-tubes of the size indicated is shown suggestively merely by the line F; but with my burners, owing to their peculiar construction, a mantle of smaller diameter may be used-that is to say, a diameter such as to admit disposition of its lower portion between the tube G and the cylinder D-in which case the said reduced mantle will be found to give substantially as satisfactory results as the more expensive and fragile mantles of larger diameter, D, as a fender tending to protect its lower portions from inury.

l It will be observed that I do not conine myself to the precise construction, form, or disposition of my screen nor to the particular size of major apertures therein, as shown in the drawings. These may all be varied with- -out departing from my invention, one essential and distinguishing characteristic of which consists in the formation and disposition of the screen in its relation to other parts, so that the major portion of the gases from the Bunsen burner shall be projected through the perforations of the screen in directions rectangularly inclined directly against the sides of the mantle where most proximate to such perforations, and another essential and distinguishing characteristic of which is the incorporation in the screen of perforations having very much greater apertures than those of the remaining perforations by which they are on all sides uniformly surrounded and which major perforations are also so located as to project the gases therethrough in streams the central longitudinal axes of which are disposed at a right angle to the most proximate sides of the mantle. By these means the pressure of the gas is not unduly checked by the screen, while at the same time the popping back of the flame is prevented.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is the following, viz:

l. In an incandescent burner, of the type described, intermediate the discharge-oriice of its Bunsen burner and the sides of its mantle, a screen containing perforations of a given diameter and also interspersed among, and surrounded by, said perforations other perforations of a substantially larger diameter disposed and proportioned to project the gases passing therethrough in streams the centra longitudinal axes of which are angularly disposed to that of the burner.

2. In an incandescent burner, of the type described, intermediate the discharge-orifice of its Bunsen burner and the sides of its mantle a screen containing perforations of a given diameter and also, interspersed among and surrounded by said perforations, other perforations of a substantially larger diameter disposed so as to project the gases from said burner horizontally in streams the central longitudinal axes of which are at an angle to the proximate surface of the sides of said mantle. l

3. In an incandescent burnerthe combination of a mantle, a Bunsen burner, an auxiliary tube concentric with and removably secured to said Bunsen burner, disposed over the discharge-oriiice of said auxiliary tube a screen containing perforations disposed to project the most part of the gases horizontally in streams the central longitudinal axes of which are at a right angle to the proximate surface of the sides of said mantle, and below said screen and concentric with said tube and said cylinder, another burner of greater diameter, open at the top and closed at the bottom.

4. In an incandescent burner of the type described the combination of a mantle, a Bunsen burner, an auxiliary tube concentric with and removably secured to said Bunsen burner, disposed over the discharge-orifice of said auxiliary tube a screen, and below said screen and concentric with said tube and said burner another cylinder of greater diameter, open at the top, closed at the bottom, and so shaped, supported and disposed relatively to said tube as to admit disposition between them of the lower portion of said man- IOO tle, said screen containing perforatons of a gle to the proximate surface of the sides of given diameter and also, interspersed among said mantle, substantially as described.

'and surrounded by said perforatons, other JAMES B SHEEHY perforatons of a substantially larger diameter disposed so as to project the gases from Witnesses:

said burner horizontally in streams the een- PHILIP C. PEGK,

tral longitudinal axes of which are at an an- GEORGE G. MEAsUREs.

Corrections in Letters Patent No. 820,676.

It is hereby certified that n Letters Patenty No. 820,676, granted May 15, 1906, upon the application of James B. Sheehy, of New York, N. Y, for an improvement in Incandescent Burners, errors appear in the printed'specication requiring oorrection, as follows: In line 112, page 2, the Word cylinder should read burnenand same page vand line, the Word burner should read cylinder; and that the said Letters Patent should Ibe read With these corrections therein that the same may conform to the record of the ease in the Patent Ofce.

. Signed and sealed this 16th day of October, A. D., 1906.

[SEAL] F. I. ALLEN,

Commissioner of Patents.

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