US604102A - Gas-burner - Google Patents

Description

(No Model.)

T. WILSON. GAS BURNER.

N0. 604,102.- Patented May 17,1898.

FIG. 2

INVENTOR WITNESSES: flfzzw,

UNITED STATES THOMAS WILSON, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE- PATENT UFFICE.

GAS-:BURNER.

SPECIFICATION forming part of Letters Patent No. 604,102, dated May 17, 1898.

Application filed February 1, 1897. Serial No. 621,429. (No model.)

To all whom it may concern:

Be it known that I, THOMAS WILSON, of the city and county of Philadelphia, State of Pennsylvania, have invented an Improvement in Gas-Burners, of which the following is a specification.

My invention has reference to gas-burners;

and it consists of certain improvements which are fully set forth in the following specification and shown in the accompanying drawings, which form a part thereof.

The object of. my invention is to provide means for regulating the flow of gas to a Bunsen burner of a class of burners especially adapted to incandescent lighting. It has heretofore been customary in burners of this class to provide means for supplying to the burner a fixed quantity of gas and varying the combustion by adjusting the air-supply. Experience with outside or street lighting, however, has demonstrated the advantage of maintaining a fixed air-supply and an adj ustable gas-supply for proper rendering of the refractory mantle incandescent under the varying gas-pressures in the mains. In streetlamps it is difficult to provide means for securing this regulation in a manner which shall be capable of ready adjustment. without dismantling the lamp. By my improvement, however, I secure the desired end in a most efficient and practical manner.

In carrying out my invention I provide the Bunsen burner with a gas-port, through which a needle-valve extends and by which the size of the orificeis regulated. The base of the Bunsen burner is adjustable upon the support or thimble of the needle-valve, whereby the turning of said base will secure the necessary relative adjustment of the gas-orifice upon the needle or tapering valve. The support or thimble of the needle-valve is made hollow and communicates with the gas-supply pipe. It is further provided with apertures through which the gas passes from said supply-pipe to the Bunsen burner.

My invention also comprehends other details of construction in a burner of this character, all of which will be better understood from the accompanying drawings, in which- Figure 1 is an elevation of my improved upflowing gas from the orifice G;

gas-burner. Fig. 2 is a sectional elevation of same, and Fig. 3 is a perspective View of the needle gas-valve for the Bunsen burner detached.

A is the main-valve casing and is adapted to be screwed upon the top of the gas-supply pipe and is provided with a rotary valve B, movable by a lever 17 for turning on or ofi the gas, as is customary. Screwed upon the top of this casing A is a thimble 0, upon which is centrally mounted at the top a needlevalve E. The top of the thimble is perforated, as at e, about the needle-valve, so as to allow the gasto pass freely upward. Screwed upon thethimble O is an inverted valve-cap D, which is provided at the top with a central aperture G, through which the point of the needle-valve extendsand by which the flow of gas to the Bunsen burner is controlled. The cap D forms the base of the Bunsen burner and is provided with projecting arms (1, which maybe pressed upon for rotating the cap with the objectof adjusting the same vertically upon the stationary needle-valve. In this manner it is not necessary for the needle-valve to extend downward for operation from below, as has heretofore been customary with the needle-valves. The Bunsenburner tube H is secured upon the cap D at F and is provided with the air-apertures h, which admit the requisite quantity of air to the Bunsen burner simultaneously with the The heating-gas soproduced is burned at the main burner K for rendering incandescent a mantle L of refractory material.

I is a shield supported upon the Bunsen burner and open at the bottom, as at t', for the entrance of air to the apertures h. Surrounding this shield I is a cylindrical screen J, which is designed to prevent the entrance of insects, dirt, &c., to the Bunsen burner.

The Bunsen burner, including the cap D, may be freely revolved upon the thimble G, under the adjusting action, so that the entire burner is somewhat raised or lowered in the adjustment, but not sufficiently to be perceptible to the general appearance of the structure as a whole.

N is a by-pass from which leads a perforated tube M, extending upward and into the burner structure adjacent to the main burner K for the purpose of igniting the gas flowing from the main burner. In practice the gas is first admitted to the by-pass, and after the light is applied to the tube M the gas is ad- I'nittedto the main burner and thereby ignited, after which the gas to the by-pass is shut off. The tube M, extending up through the burner structure P, holds the same from rotating while the Bunsen burner itself is rotated for adjustment.

As shown, my improvements are applied to a structure in which there is a single burner in the lamp. In cases where there are two or more burners the customary Y-shaped tubular frame is screwed upon the top of the easing A, as indicated in United States Patent No. 597,430, dated January 18, 1898, and the thimbles O, screwed upon the upper nipples of the said Y-shaped tubular frame, and therefore the pipes leading to my improved burner would be modified to suit the usual location of the burner relatively to the main supply pipe. It is, however, excellently adapted to the construction in which a single burner is used, and Where it would be utterly impossible to arrange the needle-valve to be rotated without objectionably increasburner and the main valve A and inserting an irregular tubular passage, which is not desirable.

By my construction the vertical height of the entire structure is reduced to a minimum consistent with good practicable operation and without interfering in the slighest manner with the necessary adjustment which is so essential in practice. 0 rdinaril y the shield I is provided with a valve to control the entrance of the air at 2'; but in outdoor lighting it is desirable to leave the air-entrance of uniform area and adjust the gas-supply to compensate for variations in the pressure and richness of the gas.

In this manner a of, as they maybe modified without departing from the principles of my invention.

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

1. In a gas-burner, the combination of avertically movable and rotatable Bunsen burner having a gas-aperture at the bottom, a main gas-pipe leading to the Bunsen burner, afixed needle-valve arranged upon the main gas-pipe and extending into the aperture in the Bunsen burner, an air-valve carried by the Bunsen burner, lateral projections from the Bunsen burner below the air-valve for rotating it,

a main burner loosely supported upon the Bunsen burner, an incandescing mantle supported over the main burner, and means to hold the main burner and mantle against rotation when adjusting the Bunsen burner upon the needle-valve. 7o

2. In a gas-burner, the combination of the main gas-pipe and valve, a by-pass leading therefrom, an auxiliary igniting-pipe leading from the by-pass to the main burner, a fixed needle-valve arranged upon the gas-pipe, a

Bunsen burneradj ustable vertically upon the fixed needle-valve, and a main burner supported by theBunsen burner and held against rotation by the auxiliary igniting-pipe.

ing the connection between the Bunsen *valve secured centrally upon a perforated f thimblefitted to the-gas-pipe,a Bunsen burner having a small central gas-orifice at the bot- 3. In a gas-burner, a stationary needletom receiving the point of the needle-valve and provided with a screw-threaded adjusting connection upon the thimble whereby it may be rotated and thus vertically adjusted upon the needle-valve, a mantle adapted to be heated by the gas from the Bunsen burner, iscreened air-passages to lead air to the Bun- 9o sen burner adapted to be rotated with the" Bunsen burner, and means to hold the mantle stationary when the Bunsen burner is rotated during adjustment.

In testimony of which invention I have 5 hereunto set my hand.

I THOMAS WILSON.

Witnesses:

WM. 0. EVANS,-

ARTHUR BOSWELL.

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