Untitled record

No. 3,419».Patented J an’y 31, 1844.

J. WATSON.

Sugar Filter.

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N. PETERS. Photo-Lithographer, Washington. D. C.

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UNITED STATES : PATENT OFFICE.

JOHN WATSON. OF ELIZABETHTOWN, NEW JERSEY.

FILTER FOR SUGAR, &amp;c.

j Specification of Letters Patent No.3,419, dated January 31,1844.

To all whom it may^concern:

Be it known that I. John Watson, late ot Ghorley, m the county of Lancaster, Engiⁿ a now a resident of Elizabethtown, in 5 the State of) New: Jersey,-have invented a new and useful Improvement in the/Com struction of Filters Used inthe Manufacture of Sugar,, of which the following is a dull and accurate description, reference being 10 had to the accompanying drawings, making part of th is. sped float ion. , ^: :.

Figure.! is a view of my apparatus when complete representing a conical . vessel formed of vertical bars δ δ δ connecting two 15 circular horizontal rims f f—the One marked /.surrounding the bottom plate and projecting, a short distance above it, the other /' surrounding the upper part, of the vessel but not seen in Fig. 1 on account of a hoop 20 n' which encircles and conceals it; but- shown m the .sectional drawings Figs. 2 and 3. These rims / /' are cast in sections; the bars δ δ δ connecting the, several sections being cast with them,, and are hooped: together 25 when in place by the, hoops n n' as shown in

Fig. 1 where the .rim / is shown constructed m this manner With the hoop n encircling it. On the top of the vessel A there is an annular lid, E secured: at its outer edge i o a liori30 zontal rim m, surrounding the top of the ves_Tsei and a smaller, lid? F adapted to the -circular, opening in the center of the lid : E the two lids entirely covering the vessel,. A wire cloth lines the interior of the vessel A im35 mediately within the bars δ δ.. δ and is seen in the. spaces between the bars except where the wire is represented broken away in Fig. 1 showing a lining of cloth inside of it. :,

Fig.. 2 is a sectional view of the apparatus 40 in which the whole front portion of it is removed but leaving the bottom plate C entire showing an inner/vessel ,of wire cloth marked B, the. front of which is also removed to show its interior construction, sup45 ported on hoops I I I. placed horizontally one over the other and forming a frame on which the wire is kept distended. Surrounding the whole of the inner vessel B there is a space filled with animal charcoal 50 closed at bottom by. the bottom plate C which closes both the inner and outer vessel and .the space between them.

Fig. 3 is a section of the lids E F and the parts of the apparatus immediately connect55 ed with them. On the rim /' encircling the vessel A another horizontal rim g is placed and secured there by a hoop h' shown in Fig. 1 and , seen, in section at Fig. 3 overlaying and. confining both rims. Over the inner yessel B and. within the rim last described ₆₀a,similar horizontal rim g' is placed a space intervening between the rims g g' as between the vessels A, B. To support the rim g. (the wire cloth, forming the inner vessel B npt being, sufficiently strong) temporary «5 vertical supports are used, not shown in the drawing, which are removed when the lid E is placed on the vessel, screws passing froin this lid into a horizontal plate m' attached to the,rim/securing the latter in ₇₀place when the 1 id E is fastened down as hereafter described. On , the/ upper surface or the rim g two vertical plates are cast one ma i ked h surrounding its whole inner edge another, marked k raised from its whole’ 75 outer edge as shown in section at Fio·. 3 the space between the plates h k formin°· a groove for a purpose to be described. Two vertical· plates are also raised on the upper surface of the rim / one marked Id sur- 80 rounding its inner edge another h' raised along its whole outer edge a groove beino· formed by the space between the plates h' Id as on the. rim g and for the same purpose. Ihe, vertical plates k Id are nearly double 85 the height of the plates h h' as shown in bigs. 2 and 3,and are bent at right angles at their: upper ends the plate k outwardly so as to form -a horizontal rim m surrounding , and projecting, beyond it, the plate 1/ ₉₀in an inward direction forming a horizontal plate nd with a circular opening in its center coin mu niea ting with the interior of the vessel B as seen in Fig./2. i.

,/ When the apparatus is to be used the space 95 between the vessels A and B is filled with animal charcoal up . to the rims g q’ The grooves, between the plates:A k and h' k' are also,. filled, with animal charcoal and an an- , nular plafe D Fig. 2 fitted into the space 100 between the plates ,7r Id,, so as to rest on the ίθΡ. Qi the. plates Λ h' and the surf ace of the charcoal in the grooves already described’ a vertical projection cast on the whole of the lower surface of the plate D fitting into and 105 nlling up the space between the plates h, and h the charcoal in the grooves described acting as a. packing to prevent the escape of the liquor in an upward direction. Over the plate p the lid E is fastened down and se- 110 cured; by screws 0 0 0 passed through it near its outer edge, as shown in Fig. 1, into cor3,419 responding holes o' o' o' in the horizontal rim m Fig. 2- by means of which arrangement the space between the vessels A and. B is completely covered. In the lid E Dear 5 its inner edge there are screws also marked p Fig. 1 which descend into holes p p m the horizontal plate m', by which the rim g is sustained when the temporary supports under it are removed. The circular lid I fitting the opening in the center of the lid E is also secured in place by screws r descending into holes r' in the horizontal plate m as shown in Fig. 3 where a section of the lids E and F and the plates m and-m is shown with the method of securing them m ^P The circular bottom plate e is shown in Fig. 2 with the lower rim f encircling it. Inside of this rim and concentric with it and 20 at equal distances from each other there are two horizontal circular rims e e' raised on the upper surface of the bottom plate c. Inside of the rim e' and at a distance from it equal to that between it and the rim /the 25 whole inner portion of the plate o is /J-issd so as to be on a level with the top of the rims e e' around which elevation the lower margin of the vessel B is confined three grooves are formed by this arrangement into 30 which the charcoal is pressed which prevents the liquor from escaping as it would if the bottom plate were flat on its upper surface. The lids being fastened the liquor is introduced into the inner vessel B by an ordinary force pump shown at G Fig. 1 through a tube H which enters the bottom plate C. There is a discharge tube G' also for emptyin^0, the vessel B provided with a cock as seen in Fig. 1. To keep up a constant pres40 sure in the vessel B after it has been filled there is a vertical tube w which is several feet in height and bent at bottom to allow of its lower end entering the inner vessel B through the bottom plate c. This vertical 45 tube w is filled with liquor when the pump is in action which when the vessel has. been supplied keeps up a pressure on the liquor in it forcing it through its sides of wire cloth and the animal charcoal surrounding it 50 from whence it escapes by the spaces between the bars b δ δ of the vessel A.

To keep the interior surface of the inner vessel B free I employ a revolving brush as shown at L Fig. 4 the brush being attached 55 to a vertical shaft S the lower end of which is stepped on the bottom plate C the upper | end passing through a stuffing box in the center of the lid F. . .

The advantage of my apparatus is that it presents a greater surface of animal char- 60 coal to the action of the liquor in the same space than has been hitherto obtained. Another advantage is that a vertical surface of charcoal is acted on instead of a horizontal one, a vertical surface not being liable to 65 become obstructed like the other from the impurities of the liquor settling upon it. The form of my apparatus is not of consequence. It may be made of a square cylindrical or other shape without varying the 70 character of the invention.. Instead of making the inner vessel B of wire cloth the order may be reversed and the liquor introduced into a close outer vessel haying within it. a vessel of wire cloth and within this again 75 another vessel formed of vertical bars bbb like the vessel A Fig. 1 with animal charcoal arranged between them the liquor being made in this arrangement to press inwardly and discharge at the center instead of out- 80 wardly as in my present plan.

The most important feature of my invention as I consider is the arrangement of the charcoal or filtering material between two vertical surfaces covered at top and bottom 85 and formed of wire cloth or other open material allowing of the liquor to enter the charcoal in a lateral direction on one side and escape from it on the other. .