US144159A - Improvement in evaporating pans and plants for salt manufacture - Google Patents

Description

I 2Sheets-'-Sheet1.

. e. w; STOBE B. Evapnrat i'ng-Pgans and Plants for Salt Manufacture.

Patented Oct. 28,1873.

Wh-NE 5 SEE:

. 2Sheets--Sheet2. G. W. STORER. Evaporating Pans and Plants for Salt Manufacture.

No. 144,159. Patent ed0c't.28,1 873.

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IMPROVEMENT IN EVAPORATING PANS AND PLANTS FOR SALT MANUFACTURE.

Specification forming part of Letters Patent No. 144,159, dated October 28, 1873; application filul September 30, 1873.

To all whom it may concern:

Be it known that I, Geo. W. S'ronnn, of Philadelphia, in the county of Philadelphia and in the State of Pennsylvania, have invented certain new and useful Improvements in the Method of, and Apparatus for, Manufacturing Salt; and do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings making a part of this specification, in which- Figure 1 is a"perspeetive view of my apparatus, as arranged for use, and Fig. 2 is a vertical central section of the apparatus used for cleansing and drying the salt.

Letters of like name and kind refer to like parts in each of the figures.

The design of my invention is to enable an improved quality of salt to be produced in a cheap, convenient, and expeditious manner; and it consists, principally, in the apparatus employed for cleansing and drying the salt, substantially as is hereinafter shown. "It con sists, further, in the construction, combination, and arrangement of the entire apparatus, substantially as and for the purpose hereinafter set forth. I

In the annexed drawin A represents a steam'boiler, having any desired construc tion, around which are arranged, radially, a series of vats or pans, B and B, and between each pair of the latter two tanks, 0 and C, as shown. The vats B and B are constructed, preferably, with wooden sides I) and double metal bottoms 1), between which latter is formed a space that is connected with the boiler A by means of a pipe, D, and serves to contain steam for the purpose of heating the contents of said vat. The tanks G are constructed in substantially the same manner as the vats, and their hollow bottoms are in a like manner connected with the boiler A, so so as to enable the heating of their contents.

As thus constructed and arranged, the apparatus is employed in the following manner: One of the tanks is filled wit-h salt-water, and heat applied to its bottom until said water has attained a sufficient temperature to cause its impurities to be precipitated, after which it is permitted to cool, and is then drawn into one of the pans or vat-s, where it is subjected to heat until brought to a'state of saturation. While the last part of this operation is being performed the second tank is filled with water, and the impurities of the latter precipitated, after which said water is drawn into said vat, said tanks being alternately cleansed, filled, heated, and their contents discharged into said vats until the latter is filled with water at the point of saturation. The water in the vat B, above named, is now drawn into the second or finishing-vat B, where evaporation takes place mitil the salt is crystallized, the first vat B, in the meantime, being cleansed and refilled, as before, nearly all of the impurities remaining in the water as it leaves the tanks, being deposited in the bottom of said first vat. From the finishing-vat B the salt is conveyed to a drier, which, as seen in Fig. 2, consists of' a cylindrical "essel, l), which has open ends and is, at a point somewhat above its lower end, provided with a wovenwire screen or bottom, (7, upon which said salt is to rest. The lower end of the vessel D is fitted over a projecting annular flange, c, which is attached to, and forms part of, a base, E, in such a manner as to make an air-tight joint. Within the upper port-ion of the base E is formed a chamber, E, which communicates, by means-of a pipe, F, with suitable apparatus, G, for exhausting air, while, from the lower side of said chamber, a water-pipe, 1H, extends outward and downward. having a head that corresponds in size and shape to the upper end of the vessel D, is so arranged as to enable it to be moved over the latter, or, when not in use, turned to one side. Thevessel I) being now filled with salt water at the point of saturation is showered within its upper end and passes downward through said salt and out of the dischargepipe H, having, during such passage, dissolved and carried away all remaining impurities. The wastepipe His now closed, the sprinkler I turned to one side, and the air-exhausting apparatus setin motion, so as to cause a strong downward,

A shower-bath, I,

2 Midas) By means of my method and a maratus a perfectly pure article of salt is produced in a comparatively short time, and with but little labor and expense.

Having thus fully set forth the nature and merits of my invention, what I claim as new is l. The Vessel D, provided with a reticulated bottom, d, and the base E, provided with the chamber E and Waste-opening H, constructed and combined with each other, and with suitable water-showering and airexhaust-ing apparatus, substantially as and for the purpose shown.

2. The precipitatiiig-tanks and U, the evaporating-pans B and B, the drier D and E, and the showerer I, arranged as shown, and combined with suitable steam-generating and air-exhausting apparatus, substantially as and for the purpose shown and described.

In testimony that I claim the foregoing I have hereunto set my hand this 20th day of September, 1873.

GEO. W. STORER. Vitnesses:

Gno. S. PRINDLE, .ToIIN It. YOTING.

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