US112111A - Improvement in apparatus for carbureting air - Google Patents

Description

ALEXNDERDALRYMPLE BELL, OF SAN FRANCISCO, G'ALIFORNIA Letters Patent No. 112,111, dated February 28d, l1871.

IMPROVEMENT lN APPARATUS FOR CARBURETING AIR.

The Schedule referred to in these Letters Patent and making parl: of the same.

To .all whom it may concern:

VB e it known that l ALEXANDERDALRYMPLE BELL,

of San Francisco, in the county of San Francisco and in the State of California, have invented anlmprovement inj the Manufacture of Pneumatic-Gas ofwhich the following is a speeilication, reference heilig had to thev accompanying drawing.r 1u the production of pneumatic-gas if the carburctersv are too large, tbe ainiu its passage through them becomes overclnuged'with the hydrocarbon vapors, yand` to avoid this result it is found necessary to reduce' the size of the carburcters until another difiiculty is encountered iu the refrigeration of the hydrocarbon liquid caused-by its rapid evaporation.

The rst object of my invention lto obviate this last diiculty.. vlll/hen the air-pump or apparatus for forcing the air through the carbureters is driven by weights, springs, or clock-work, very perfect workman- ,Ship and consequently expensive machinery is required to secure a uniform pressure of gas, because of the irregular friction of the parts.

The second part of my invention is to provide a method by which a uniform pressure may be always maintained; and

My invention consists in combining two sets of apparatus for generating vpneumatic-gas into one machine, in such a manner that when refrigeration takes place in one carburetor or set of carbureters the other or other set will begin its action and allow the first to regain a suitable temperature by the absorption of heat from its surroundings, and in such -a manner that when weights, 'sp1-ings, or clock-work is employed for driving the airpump, a uniform pressure of gas isl maintained, as hereinafter more fully described.

In the accompanying drawing- Figure l is an elevation of an apparatus for the manufacture of pneumatic-gas embodying my improvemcnt.

Figure 2 is a plan of the same with certain parts removed.

Each part is distinguished bythe same letter whenever it appears iu the drawing.

A and A' are the carbureters.

B and B are rotary air-pumps or machines for fore` ing the air through the carbureters.

The motive power is derived from weights C and C', and is communicated to the machines B andB by means of the blocks D, cords E, and reels F. The weights may be wound up by means of cranks G. The air is conveyed to the carbnreters by means of the pipes H, H1, and H2, where it absorbs"the vapors of gasoline or other hydrocarbon liquid, and becomes.

converted into'pneumatic-gas, and from the carbureters it passes through the pipes I and I to the delivery ature.

pipe J. It will be seen that this apparatus consists of two complete pneumatic-gas machines united together by means of tbc` cross-pipe H", and dischargl'ing through one and the same delivery pipe..

The interiorconstruction of the carbureters isnot shown7 because my invention is applicable to any kind of carbureter used in the manufacture of pneumaticgas. And myjnvention is equally applicable to any kind of air-pump that may be employed. The airpuxnps shown in the drawing arc of that class, the

speed of which is regulated by thepressure ofthe V compressed air or gas contained iu the carbureter and pipes, and the stopping and starting of which are effected by the increase or diminution of said pressure.` By means-ofthe five-stop cocks K either or both-air- `pumps may be caused to force air through either or both carburcters or either carbureter, or either airpump may be disconnected for repairs.

.In the apparatus represented in the drawing, if all escape of gas from the dcliverypipe is prevented by shutting the cocks of the burners, the weights will descend until the pressure of the gas becomes sufficient to balance them; if one or more of the cocks of the burners be then opened the heavier weight only will descend, if one is heavier than the other and the gas will only be generated in the carbureter through which that weight Vforces the air but if any thiugvshould impede or interfere to check the descent of the heavier weight, the lighter weight would immediately begin tol move and the gas would be supplied from the 'other carburetor; if the weights are equal, that one will move lirst that hasthe least friction of rope and sheave to overcome, and will continue to move until somelthing -impedes or retards it, and thereby allows the pressure of gas to Idecrease suciently to start thc second weight. To maintain a uniform pressure of gas the weights shold'be made as nearly equal as possible, and may be regulated or adjusted by additional weights after the machines are in operation, and' to provide against refrigeration an extra weight or weights may be provided, that'may be added to either side, as

required, in order to allow the carbureter in which the llooigand of them is made heavier than the other, the' heavy one will supply the gas for the first four hours Qta@ fw/ew I am eine,

and until refrigeration takes place; but as soon as it touches the oor the light weight will begin to descend and produce the gas from the other carbureter for the next four hours, or a single air-pump may be used and its air directed alternately through the carbureters, changing from one to'i'he other ver four hours, when the object is simply to prevent refrigeration. When afan or other continuously blowing-machine is used for forcing the gas into a reservoir or holder, as 'in large works for supplying a'town orcity, my invention is also applicable, for it is evident that by having two sets of carbureters, the blast can be shut oii from one and be directed through the other when refrigeration has taken place.. It is quite evident that my invention is also applicable when the air-pump is driven by springs and clock-Work or other motive power instead of by Weights.

Having thus described my invention,

, What I claim as new, anddesire to secure by .Let-

ters IPatent, isfl. In an apparatusl for theA manufacture of' pneumatie-gas the combination of two earbureters or two sets of carbureters acting alternately, in a manner suhstantially as described, aud lfor the purpose oi. preventing excessive refrigeration, substantially as described.

2. Iuan apparatus for the manuiacture oi pneumatic-gas, the combination ofthe air-pumps B and B, arranged to operate in a manner substantially as described, and for the purposes set forth.

3. The combination, in one 1nachine,of ltwo coniplete sets oi' apparatus .for generatino` pneumatic-gas, in a manner substantially as hereinbet'ore described, and for the purposes hereiubefore set forth.

In testimony whereof I have hereunto set my hand this 2d day of' December, A. D; 1870.

.ALEXANDER DALRYMPLE BELL.

Witnesses: y

J. E. PURDY, WM. B. Isaacs.

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