US633655A - Acetylene-gas lamp. - Google Patents

Description

No. 633,655. Patented Sept. 26, 1399'. 9

J. A. mosmzn.

ACETYLENE GAS- LAMP.

(Application filed Sept. 16, 1B98.|

(No Mndel.)

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NITED STATES PATENT rrrcn.

JOHN A. MOSIIER, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE ADAMS &

IVESTLAKE COMPANY, OF SAME PLACE.

ACETYLEN E-GAS LAM P.

SPECIFICATION forming part of Letters Patent No. 633,65 5, dated September 26, 1899.

Application filed September l6 1898- Serial No. 691,091. (No model.)

To all whom it ntay concern.-

Be it known that I, JOHN A. MOSHER, a citizen of the United States of America,and a resident of Chicago, county'of Cook, and State of Illinois,haveinvented certain new and useful Improvementsin Acetylene-Lamps, of which the following is a specification, and which are illustrated in the accompanying drawings, forming a part thereof.

The objects of the invention are to provide improved means for both automatically and manually controlling the water-supply in lamps of this class, for cooling the gas-discharge pipe, to improve the mechanical construction of the body of the lamp, and means for sealing the generating-chamber.

The invention consists in the various parts and arrangement of parts,as hereinafter fully described and as illustrated in the accompanying drawings, in which Figure 1 is a side elevation of the lamp. Fig. 2 is a transverse vertical central section. Fig. 3 is a plan section below the head of the lamp, some of the parts being broken away. Fig. 4 is a plan View of the carbid-container, a port-ion being broken away. Fig. 5 is a detailsection through the water-feed and its controlling mechanism. Fig. 6 is a detail section on the line 6 6 of Fig. 5; and Fig. 7isa detail section of the water-tube, showing a modified form of construction.

The head of the lamp is shown at A and may be of any desired form. It is preferably spaced apart somewhat from the body portion and secured thereto by legs a, which are as small as may be consistent with strength in order that the least possible amount of heat may be conducted from the head to the body of the lamp.

The lamp-bod y is shown as being substantially cylindrical in form and as being circumferentially contracted, as shown at b, intermediate of its ends. WVithin the upper end B of the lamp-body is permanently fixed an annular water-tank D, the top of which forms the top of the lamp-body and to which the legs a are attached. This water-tank is provided with a filling-aperture (Z, closed by a suitable plug. The carbid-container E is adapted to fit within the lower end C of the lamp-body and is closed by means of a cen- "trally-perforated flanged cap 6, lined with a pervious pad 6, which may be formed of blotting-paper or similar material. A diaphragm F is fixed across the inner end of the lower portion 0 of the lamp-body and is provided with a central aperture, from which rises a tube f, which passes through and is of less diameter than the central aperture of the water-tank, this tube extending into the head of the lamp and carrying a burner-tip f. The bottom of the lamp-body is closed by means of a flanged cap H, having an annular channel adjacent to its flange, within which is fitted a gasket K. The lower end of the lampbody is screw-threaded and at its extreme end inturned to form a rounded bearing for the gasket. A screw-threaded band h is fitted within the flange of the capH and is secured thereto in any desired manner, as shown, by having its upper edge interrolled with the edge of the flange. The band It extends not quite to the bottom of the flange of the cap, so that the gasket K may be forced under its lower edge, thereby providing means for retaining the gasket in place when the cap is removed from the lamp-body.

A tube G, open at its upper end, extends downwardly through the top 6 of the carbidcontainer to its bottom and is provided with a series of lateral apertures g, extending, preferably, through its entire length. A tube M leads from the tank D downwardly through the diaphragm F and is adapted to enter and reach almost, but not quite, to the bottom of the container. The bore of this tube is sufficiently large, so that gas may escape upwardly through it without entirely displacing the Water, and to facilitate this action the tube is unobstructed otherwise than by a manuallyoperated valve, which may or m ay not be used, except at its lower end, where its here is reduced either by actually contracting the tube or by filling its end with a porous plug. I prefer the porous plug, as it is desirable to discharge the water from the tube into the generating-chamber through a retarding medium, and if the porous plug is not used .I place a floss O, of fibrous material, at the bottom of the tube G and rest the mouth of the tube M upon it.

In Figs. 2 and the tube M is shown as having its bore contracted at its lower end by the introduction of a metal plug m, having a small aperture. This plug is counterbored from below, so as to form a small chamber below its aperture. This arrangement exposes to the descending water a considerable area of the upper surface or" the fibrous floss O. \Vhen the pressure in the generating-chamberbecomes sufiicientto counterbalance the water column in the tube M, the gas collects in the small chamber thus formed at the lower end of the tube and stops the flow through the small aperture in the plug m. The water is not, however, driven back in the tube beyond this plug, as the small jet of gas passing through its aperture bubbles up through the water in the tube, and as a result the water column remains of uniform height, and the pressure at which the gas is burned is consequently uniform instead of varying, as is the case when by reason of the small bore of the tube or the employment of fibrous packing within it the gas drives back the water and so reduces the pressure of the water column.

In lieu of the metal plug m and the floss O a porous plug M, preferably of fibrous material, may be inserted in the lower end of the tube M, and the action is substantially the same, as the gas when the pressure exceeds that of the water column drives the water back out of the porous plug, but escapes from the plug in bubbles, and hence does not shorten the water column beyond the length of the plug. \Vhen this means of reducing the capacity of the discharge end of the pipe M is resorted to, an ordinary two-way cock q may be used to manually control the water-supply to the generating-chamber. hen the metal plug m is employed, it may be counterbored from above to provide a conical valve-seat and a tapering valve P applied to this seat. This valve has a stem 13, which is attached to a crank-pin Q, projecting eccentrically from the end of a rock-shaft g, which extends through a stuffing-box R, passing through the contracted portion b of the body of the lamp and hearing at its outer end a key 0". A collar d is fitted upon the tube f and is secured to the top of the lamp-body. This collar is freely perforated to provide for the circulation of air around the pipe f, the contracted portion 1) of the body of the lamp also being perforated for the same purpose.

The container E having been filled with carbid is closed and inserted within thelower end of the lamp-body, which is then sealed by the application of the cap H. The waterchamber having been filled, the valve in the tube M is opened and water enters the tube G, rising to the lowest lateral aperture g, from which it escapes into the carbid, thereby starting the generation of gas. The gas finds its exit through the tubefand the burnertip, and when the generation is excessive the pressure forces the water down in the tube G and up through the tube M, and if the pressure is sufficient to entirely empty the tube G of water the gas escapes upwardly into and through the water-chamber and a vent-pipe S, rising therefrom to the top of the head of the lamp. As the carbid in the lower portion of the container becomes spent the water rises in the tube G and escapes from the higher lateral apertures.

By the construction described I am able to maintain a column of water of substantially uniform height, thereby securing a uniform pressure of gas, the tube M being at all times filled with water and theheight of the column being varied only by the lowering of the water-level within the chamber D. By locating the valve at the bottom of the water-pipe instead of at its upper end, as has been customary in lamps of this type, the quantity of water accessible to tire carbid after the valve has been closed may be greatly reduced. By separating the water-tank from the generating-chamber by the contraction of the lampbody and providing for the free circulation of air under and through the water-tank and around the gas-pipe I preventin great measure the heating of the waterdue to thechemical action in the generating-chamber and cool the gas before it reaches the burner-tip,

- so as to check the tendency to gum up the tip.

lVhen the form of construction shown in Figs. and 5 is followed, a valve-stem 1) is made of such length that the valve is closed by less than a half-turn of the spindle q, so that the wear of the valve and its seat may be compensated for by a little longer throw of the valve.

The location of the water-feed is immaterial. I show it for convenience as being near the side of the lamp. In practice it will be found desirable for some reasons to locate it on the axis of the lamp-body.

I claim as my invention 1. In an acetylene-lamp, the combination with a flame-chamber, a generating-chamber, a gas-tube joining the two chambers, and a vertical tube, G, in the generating-chamber and having lateral openings; of a tank above the generating-chamber, an unpacked tube, M, leading from the tank into and substan tially to the bottom of the tube, G, the tube M having its discharge end directed downwardly, and a porous plug applied to such end.

2. In'an acetylene-lamp, the combination with a flame-chamber, a generating-chamber, a gas-tube joining the two chambers, and a vertical tube, G, in the generating-chamber and having lateral openings; of a tank above the generating-chamber, a tube, M, leading from the tank into and substantially to the bottom of the tube G, and a porous plug within the discharge end of the tube M, the bore of such tube being unobstructed above the plug. 3. In an acetylene-lamp, the combination with a flame-chamber, a generating-ch amber, a gas-tube joining the two chambers, and a vertical tube, G, in the generating-chamber and havinglateral openings; of a tank above the generatingchamber, an unpacked tube, M, leading from the tank into and substantially to the bottom of the tank G, and having its discharge end'directed downwardly, the bore of the tube M being contracted adjacent to but above its discharge end; and a mass of fibrous material against which the open end of the tube bears.

4. In an acetylene-generator, the combination with a generatingchamber and a tank located over and spaced apart from the chamber, of a tube leading from the tank through the top of the chamber, a rock-shaft entering the tube laterally between the chamber and tank and carrying a crank-pin at its inner end, and a valve located at the lower end of the tube and having its stem connected with the crank-pin.

5. In an acetylene-lamp, the combination with a cylindrical body having its end screwthreaded, a flanged cap for closing such end, and a threaded band fitted within and se cured to the flange, the inner edge of the band being spaced apart from the cap-body, whereby a gasket may be secured Within the cap.

6. In an acetylene-lamp, the combination with an annular water-chamber, of a generating-chamber below the water-chamber, and a gaspipe leading through the central apertu re of the water-chamber, such aperture being open to the atmosphere at its lower end.

7. In an acetylene-lamp, the combination with a cylindrical body, of an annular waterchamber in the upper end of the cylinder, a generatingchamber in the lower end of the cylinder and spaced apart from the waterchamber, and a gas-pipe leading from the generating-chamber through the central aperture of the water-chamber, the wall of the cylinder being perforated between the two chambers.

8. In an acetylene-lamp, the combination with a water-chamber, and a generatingchamber below the water-chamber, of a laterally-apertured vertical tube within the generating-chamber, a mass of fibrous material within and at the bottom of such tube, awater-tube leading from the water-chamber to the generating-chamber, and being located within the laterally-apertured tube, and'having its lower end in contact with the fibrous material, and an apertured block set in the lower end of the water-tube and being counterbored from below.

9. In an acetylene-lamp, the combination with the generating-chamber and a burner, of a gas-tube leading from the generatingchamber to the burner, and a sleeve loosely inclosing the tube and being open at both ends, one end of the sleeve being so located with reference to the burner that the draft of the lamp causes a circulation of air through the sleeve.

10. In an acetylene-lamp, the combination with an annular water-chamber, of a generating-chamber, below the water-chamber, a gas-pipe leading through the aperture of the water-camber, such aperture being open to the atmosphere at its lower end, and aburner located immediately above such aperture.

11. In an acetylene-lamp, the combination with an annular water-chamber, of a generating-chamber below the water-chamber, a delivery gas-pipe leading through the aperture of the water-chamber and spaced apart from its walls, and a burner located immediately above such aperture.

JOHN A. MOSI-IER.

\Vitnesses:

LoUIs K. GILLsoN,

HESTER 13. BAIRD.

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