US73640A - pattison- - Google Patents

Description

jtaitrh States atrnt @titre JOHN E. PAT'TISON., 0F THIBODAUX, LUISIANAK.

i Letters Patent No. 73,640, dated January 2l, 1868.

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T0 ALL WHOM lill MAY CONGERN:

Be it known that I, JOHN E. PATTISON, of ThibOdauX, in the parish of Lafourche, and State of Louisiana, have invented a nevfa-nd useful Improvement in Apparatus for Treating Cano-Juice; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, which are made a part of this specification. I

This invention relates to certain improvements or alterations inthe apparatus for treatin'g cane-juice, for which Letters Patent of the United States, No. 57,958, were granted to me on the 11th day of September,`1865 Said Letters Patent describe the use of sulphurous acid gas as a medium for purifying and bleaching the juice; and inasmuch as its functions and mode of application are the same in connection with the present apparatus, this description will be confined more particularlyl to the construction of said apparatus.

Figurel is a 4vertical transverse section of my improved apparatus on the line a', fig. 2, and

Figure 2 is a longitudinal section of the same on line yy, iig. 1.

Similar letters of reference indicate corresponding parts in the two figures.

' In the drawings, A represents a long cylinder, of any suitablematcrial, which is mounted upon the pedestals or supports B Bl, so as to remain stationary while the operation is in progress. C is a longitudinal shaft mounted centrally within the cylinder A, and having suitable bearings in the heads or ends A1 A2 of said cylin'- der. The outer end of the shaft G is provided with a pulley, C', to enable the shaft C to be rotated by a band driven by any convenient connection in the mill. D D D represent a series of arms radiating from the shaft C, to .which they are attached and by which they are rotated. Attached to the extremities of the arms`D are hoops er rings, D/iD, which support and carry a series of troughs, E E E, which extend nearly from end to end of the cylinder A, and which revolve in close proximity with the internalv circumference of said cylinder, the intention being to leave no room for'juice or between the surface of the cylinder and the revolving troughs'. The troughs E may be either curved, V-shaped, or rectangular in their transverse section, as shown, and they are closed 'with en`dpieces, ec, to cause -the juice tc remain in the troughs till elevated to the desired position, and provided with two or more partitions, e e', each in order to prevent thejuice from rushing too.much toward either end of the cylinder, and to cause-the same to be poured out of the 'buckets at that part of the cylinder from which it is lifted. F is a projection or par-tin. icing from the lower part of the cylinder A, in proximity to the rim a of the movable head A1. This proj on causes the juice in the cylinder to rise above the exitopening al before itcan fiew out through the same. The projection F may be movable or adjustable, or provided with a-dr'aw-coclr, so that when the process is finished, residnnm retained in the lower part of the cylinder by said projection may be drawn of? through the discharge-opening ntl. The juice to be treated isadmitted to 4the cylinder through the orice a2 in the lower part of the head A, which entirely closes that end of the cylinder. a3 is an orifice or aperture for the admission of sulphurous acid gas, which being thus introduced at vthe end A2 is diffused within the cylinder, and serves to bleach and defecate the cane-juice as the latter is raised and dropped in attenuated streams or sheets. rl'hc juice being compelled to rise one or more inches inthe cylinder, by the projection F, is caught by the troughs E and lifted to the points where the inversion of the respective troughs commences, and the juice is then poured out of the troughs in sheets descending in dierent planes according to the angles of the sides of thc troughs'. In this way the juice is taken up by the troughs or buckets and dropped again to the bottom of thc cylinder several times before reaching the dischargebpening. By this means thejuico is thoroughly subjected to' the action of the gas, as both sidesof each descending sheet are exposed to the gas. By this slow lifting and pouring process the juice is not dashed and agitated in large quantities as is done by the paddles or agitators of other machines, which agitation induces fermentation and foam, and prevents the effective action of the gas, itbcing impossible for the gas to act properly when foam or scum is interposed between itself and the'naked juice. The passage of the sulphurous acid toward, and its discharge through'the end A1 of the cylinder', may be effected as well as regulated by means of a jet of steam in the chimney G, which receives and conducts off the gas as it issues from the orifice of. The chimney G may be of wood or other suitable material. The removable head A1 renders the interior of the cylinder readily accessble for cleansing or other purposes.

The use of sulphur-ous acid is described and disclaimed in my previous patent hereinbefore alluded to, and,

as in my previous patent, the mechanical contrivunce, wherebythis medium is e'ectively applied to the juice, forms the subject of myclaim. v

Having described my invention, what I claim as new herein, :melv desire to secure by Letters Patent, s-v 1. A stationary cylinder, A., in combination with revolving troughs E, one or more, or their equivalents, said troughs beim.;r contained Within snid cylinder, and employed to raise and drop the juice in orderto bring it under the effective action of sulphur-ous acid, substaIntia-lly as described.

2. The projection or partition F, wronged and employed in the inanner and for the 'purpose set forth. 3. The provision in the troughs E of the partitions e', substantially as and for the purpose set forth.

JOHN E. PATTISON.

Witnesses L. LYoNs, W. J. CASTELL. v

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