US44883A - Improved apparatus for carburetsng air - Google Patents

Description

G. ODlORNE;

Apparatus for Carbureting Air.

Patented NO 1, 1864.

k 0 v Z n n ii T Z.- I 1:1 'z'fiiziii Wewes v @AMM? UNITED STATES PATENT GEORGE ODIORNE, OF BOSTON, MASSACHUSETTS.

IMPROVED APPARATUS FOR CARBUPtETlNG AlPt.

Specification forming part of Letters Patent No. 11,883, dated November 1, 1864 To all whom it may concern Be it known that I, GEORGE ODIORNE, of Boston, in the county of Suffolk and State of llilassachusetts, have invented certain new and useful Improvements in Apparatus for Making Gas from Liquid Hydrocarbons and I hereby declare that the following description, taken in connection with the accompanying drawings, hereinafter referred to, forms a full and exact specification of the same, wherein I have set forth the nature and principles of my improvements, by which my invention may be distinguished from all others of a similar class, together with such parts as I claim and desire to have secured to me by Letters Patent.

In the production of illuminating-gas from volatile hydrocarbons, the process consists simply in impregnating atmospheric air with the vapor of the hydrocarbon-liquid. The success of this operation depends, first, upon applying a constant and uniform current of air to the apparatus; and, second, upon causing the air to take up a fixed and stated amount of hydroearbonvapor under all circumstances. Thus, for instance, if the pressure of air in the apparatus is not uniform at all times, it will pass with unequal velocities through or over the liquids, change the temperature of the latter accordingly, and, again, the air will be changed more or less with the hydrocarbon- 1iquid,accordingto the length oftime it occupies in passing through the same, thus rendering the gas heavier or lighter, as the case may be, and of course affecting the lights in the same degree.

One of the principal difficulties heretofore experienced in making illuminating-gas, by depending upon the evaporation of liquid by drocarbons, has arisen from the fact that the quantity of gas required for the minimum and maximum number of burners had to be furnished by the supplying of greater or less quantities of air, and thus while the gas for a small number of lights would be too highly charged with carbon, the gas produced for a large number of burners would not be sufficiently rich in illuminating qualities, because, in the latter case, the air could not become saturated to the requisite degree.

The objects of the present invention are, then, first, to pass through the apparatus a constant and uniform current of atmospheric air; and, second, to secure the saturation of this air with a fixed and stated amount of hydrocarbon-vapor, whatever may be the consumption of the gas-that is, so that the rel.- ative proportions of atmospheric air and carbon contained in the gas shall remain the same under all circumstances.

The most essential features of my improved apparatus consist of a peculiar construction and arrangement of the device employed for forcing the air through the apparatus, and a selfregulating float resting in the liquid hydrocarbon, and maintained therein at a uniform depth, at all times, through which float and stratum of liquid hydrocarbon the air is made to pass into the gas-reservoir.

My improvements are represented in theac eompanying plate of drawings, of which Figure 1 is a plan or top view of the air-forcing apparatus; Fig. 2, a perpective view of the float; Fig. 3, a transverse vertical section of the whole apparatus, and Fig. 4 a transverse vertical section of the air-forcing device.

In the accompanying drawings, a a a represent a vessel of any suitable form, partially filled with water, as shown in Figs 3 and 4. Within the vessel to a a is the air-forcing apparatus, consisting of ahollow drum, b 1), into which the water enters at e and (1, Fig. 3. The drum 1) Z) is attached by means of perforated plates 6 and f to a shaft, 9, made to revolve by means of a weight, or in any other proper manner.

h h, &c., are a series of sectorshaped chambers or buckets arranged upon the periphery of the drum b b, as shown in the drawings. Each of these buckets or chambers is open at one end. and closed at the other, and communicates with the interior of the drum 1) I) by an opening, 7:, near its closed end 7c.

The drum-shaft 9, before referred to, has hearing at one end in the side of the vessel to a a, at the other end in the head of a tube, l, which has a pipe, m, projecting upward from and communicating with it. The pipe at extends above the level of the water in the vessel a a a.

The gasometer or vessel containir g the liquid hydrocarbon and gas is separate from, but connected with, the vessel a a a, as will be hereinafter explained, and is represented at n n n, Fig. 3. V'Vithin the gasometer n n at, and resting upon the hydrocarbon-liquid so as to be slightly immersed therein, is a traveling hollow float, 0 p, guided in its up-anddown motion by a hollow shaft, q. Around the closed base 0 of the float are a series of short tubes, r r, &c communicating with the upper portion, 19, th ereof, and with their lower ends opening into the hydrocarbon-liquid.

The connection between the gasometer a 1m and the vessel a a a is made by means of the rigl1t-angular tube or passage 8 s, which communicates both with the hollow shaft q and the tube 1, before referred to.

The operation of the apparatus is as follows: The drum b 11 being revolved, the open ends of the buckets or chambers h h, &c., necessarily dip into and pass through the water in the vessel a a a, thereby torcing through their openings *6 1 air into the drum I) b, the space above the level of the water thus becoming a reservoir of compressed air, which is delivered through the pipe m into the tube l. The perforated plates 0 and f serve, it will be observed, both to connect the drum b b with its shaft gand to allow the free passage of the air and water through them.

By the peculiar construction and operation of the abovedescribed device for passing the air through the apparatus, it will be seen that the desired effect will be produced not only with much less friction than by an ordinary center drum, or other devices heretofore used for the purpose, but the supply or" air, instead of being intermitted, as has heretofore necessarily been the case, is continuous and uniform, the buckets or chambers operating one after the other in and upon the water in the vessel a a a, instead of encountering the whole resistance of the water in a body, so as to furnish a steady supply of air to the drum 1) b. The air being forced into the tube Z, as hereinbeforedescribed, passes through the rightangular passage 8 8, up through the vertical hollow shaft q, down through the upright portion of the float 0 12, through the short tubes r r, &c., and into the hydrocarbon-liquid, from which it emerges, charged with the vapor of the same, into the gasometer n n n, whence it can be delivered as desired through an openin" t.

it will be evident that the float 0 p can have its weight so regulated as to cause its short tubes 1' r, 850., to be immersed any desired depth in the hydrocarbon-liquid, and according as this depth'is greater or less with the quantity of carbontakep up bythe air be varied, because the longer the air is in passing through the liquid, or, what is the same thing, the greater the depth of the stratum of the liquid through which the air has to pass, the richer will be the gas formed, so that when the extent to which the short tubes 1' r, &c., shall be immersed in the hydrocarbonliquid is once determined and regulated the relative proportions of air and carbon contained in the gas produced must always remain the same, whether the amount consumed be varied or not.

Placed over the gasometer n n n is a cap, it u, the sides of which play up and down in an angular chamber, 0; 0, formed in the top of the gasometer, and sealed with any suitable hydraulic joint. The extent to which it shall rise can be regulated by springs or otherwise,

and its operation and purpose will be readily understood without further explanation.

Having thus described my improvements, what I claim as my invention, and desire to have secured to me by Letters Patent, is-

1. The air-forcing apparatus herein described, the same consisting of a hollow drum, having a series of buckets or chambers arranged upon the periphery of the same and communicating with the interior thereof, all as specified.

2. The combination of the air-forcing apparatus and float, arranged and operating with regard to each other as described.

GEO; ODIORNE.

Witnesses:

JOSEPH GAVETT, SAML. M. BARTON.

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