US505816A - Extraction apparatus - Google Patents

Description

(No-Modem l f s, W, COCHRAN; A

EXTRAGTION' APPARATUS.

Patented 0011.3, 1893.

l l l lill IM' IIII l l I UNITED STATES PATENT OFFICE.

SAMUEL W. COCHRAN, OE LAMBERTVILLE, NEV JERSEY.

EXTRACTION APPARATUS.

SPECIFICATION forming part of Letters Patent No. 505,816, dated October 3, 1893.

Application led April 13, 1893. Serial No. l170,180. (No model.)

To all whom t may concern.;

Be it known that I, SAMUEL W. COCHRAN, a citizen of the United States, residing at Lam-` bertville,in the county of Hunterdon and State of New Jersey, vhave invented a new and useful Extractip Apparatus, of which the fol` lowing is a speeilication.

This invention relates to extraction apparatus; and it has for its object to provide an improved apparatus of this character employed for continuous hot percolation in exhausting drugs or other substances of their soluble constituents or active principles.

To this end the main and primary object of the present invention is to simplify and improve the construction ol' extraction or percolating apparatus of this character, so that the same will not only be available for use on a small scale, but will be well adapted for manufacturing solutions on a large scale.

.With these and other objects in view which will readily appear as the nature of the in" v ention is better understood, the same consists in the novel construction, combination and arrangement of parts hereinafter more fully described, illustrated and claimed. In the accompanying drawingsz-Figure l 1s a perspective View of an extraction apparatus constructed in accordance with this invention. Fig. 2 is an enlarged central vertical sectional view of the same. Fig. 3 is a transverse sectional view on the line -x of Fig. 2.

Referring to the accompanying drawings, A represents a percolator cylinder or vessel made in suitable size and shape according to the scale onwhich the solution is to be manufactured. The said cylinder or vessel A, is designed to contain a suitable quantity of the drug or substance which is to be treated by the percolation process in order to exhaust the same o f its active principle, and the stratum of drug which may be designated as B, is supported on the screen plate C, arranged at the bottom of the cylinder A, directly over the bottom outlet D, in order to prevent the drug from clogging up said outlet, while at the same time serving as a strainer for straining the liquid, which passes out of the bottom outletD, and through the outlet pipe E, to a point near the bottom ot the boiler F, into which the pipe E, projects. As stated, the

outlet pipe E, from the bottom of the percolator A, is led into the boiler C, to a point in close proximity to its bcttom,so that the liquid passinginto the boiler will be completely taken up by the meustruum liquid G,which is placed within `the boiler'F, and is of course the proper liquid or chemical for extracting the desired element from the particular drug or substance contained in the percolator. The boiler F, is located in any convenient position so that the same can be heated by any suitable device, in order to vaporizethe liquid contained within the same, and drive it through the circulating vapor tube H, into the top of the percolator A. i The circulating tube H, which leads the vapor from the liquid G, into the top of the percolator A, connects with said percolator near its upper open end, and said upper open end of the percolator cylinder, is surrounded by the annular flange l,

which forms a joint groove J, adapted to receive the lower edge of the upper condenser box K, removably supported in position on top of the'cylinder A. The condenser box K, is preferably constructed in a cylindrical shape and is provided with a lower projecting edge adapted to fit into the groove J, and is jointed with the cylinder A, in such groove, by a water joint, by luting, or other suitable means, so as to make the percolator perfectly vapor-tight. The said condenser box K, is provided with an inwardly extending series of condenser tubes L, which project through the bottom of the box and have lower open ends Z, communicating with the interior of the percolator cylinder A, while the upper ends ot' the tubes project to a point near the top ot the box, in order to allow the same to be entirely surrounded by cold water, which is placed within the condenser box. The condenser box K, maybe readily filled with water through the filling tube M, passing through the top of the same and projecting to a point near its bottom, and the water may be changed byallowing it to run out ofthe overliow pipe N, connected with the same near its top, so that after the box is full of water, it will flow out when more is added through the lling pipe. VA valved drain pipe 0, is connected to the condenser box near its lower end to provide for draining the same when necessary.

Now from the foregoing it is thought that the construction and operation of .the herein described extraction apparatus will be readily apparent. It will be clear, that as the vaporized liquid passes from the tube H, into the percolator cylinder A, such vapor will rise up into the condenser tubes L, and will beimmediately condensed, so that the condensed Vapor will fall with a uniform distribution upon the surface of the material in the cylinder A, will then percolate Vthrough such material and flow through the pipe E, back into the boiler F, where it will be revaporized, and

so on until the substance is exhausted and the process completed. It may be also well to observe at this point that by properly regulating the number of condensing tubes and the intervals between them, a uniform distribution of the condensed liquid is secured over the whole surface of the material through which such liquid is to percolate.

Changes in the form, proportion and the minor details of construction as embraced within the scope of the appended claims may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In an extraction apparatus, the combination of a percolator cylinder or vessel having an open upper end, an adjacent boilerin circulation with said cylinder or vessel, and a condenser fitted over the open upper end of the percolator cylinder or vessel and having condenser tubes opening at their lower ends into the cylinder or vessel, substantially as set forth.

2. In an extraction apparatus, a percolator cylinder having a bottom outlet, an adjacent boiler, an outlet pipe leading from the bottom outlet ofthe cylinder to a point near the bottom of the boiler, a circulating or vapor tube leading from the top of the boiler to a point near the top of the percolator cylinder, and a condenser removably arranged at the top of said percolator cylinderl and communicating therewith,substantially as set forth.

3. In an extraction apparatus, the combination of a percolator cylinder having a strainer plate at its bottom to support the drug, an adjacent boiler connected with said percolator cylinder at its top and bottom, and a condenser removably inclosing the open 'upper end of said percolator cylinder and having a series of condenser tubes opening at their lower ends into the percolator cylinder, substantially as set forth.

4. In an extraction apparatus, a percolator cylinder having an annular joint groove at its open upper end, an adjacent boiler connected with said cylinder at its top and bottom, and a condenser having a lower projecting edge adapted to be sealed in said joint groove of the percolator cylinder, and a series of condenser tubes opening at theirlower endsinto said cylinder, substantially as set forth.

5. In an extraction apparatus, the combination with apercolator cylinder; of acondenser c

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