US586474A - Filter - Google Patents

Description

(No Mod'el.) A. L. 8v L. J. BARTHELEMY.

l FILTER.

UNTTED STATES PATENT OEEICE.

ARISTIDE L. BARTHELEMY AND LOUIS J. BARTHELEMY, OF NEW ORLEANS, LOUISIANA.

FILTER.

SPECIFICATION forming part of Letters Patent No. 586,474, dated July 13, 1897.

Application filed September 2, 1896. Serial No. 604,645. (No model.)

To all whom. t may concern.:

Be it known that we, ARIsTIDE L. BAR- THELEMY and Louis J. BARTHELEMY, citizens of the United States, residing at New Orleans,

in the parish of Orleans and State of Louisiana, have invented certain new and useful Improvements in Filters; and we do hereby declare that the following is a full, clear, and exact description of the same, reference be- 1o ing had to the annexed drawings, making a part of this specification, and to the figures of reference marked thereon.

This invention relates to filters, and more especially to that class of filters designed for the ltration of saccharine juices and syrups, and has for its object to improve and simplify the construction and promote the etticiency of the tilter shown and described in Letters Patent No. 563,639, issued to us on the 7th 2o day of July, A. D. 1896.

To these ends our invention consists in the features and in the construction, arrangement, or combination of parts hereinafter' described, and pointed out in the claims following the description, reference being had to the accompanying drawings, forming a part of this specification, wherein- Figure 1 is a vertical central section of our improved filter, and Fig. 2 is a similar View 3o taken at right angles to Fig. 1.

Referring to the drawings, the filter-casing is shown as consisting of a lower section 1 and an upper section 2, suitably secured together. The lower section is provided with a funnel-shaped bottom 3, provided at its central or lowest portion with an outlet 4, adapted to be closed by any suitable means. The upper section 2 is open at its vupper end and is provided on its opposite interior sides with 4o inwardly-projecting flanges 5, on which are adapted to rest the ends of transverse partitions 6, that are arranged parallel to each other and at suitable distances apart. A metallic cover 7 has attached thereto or formed therewith arms S, provided with downwardlydepending lugs 9, that are hinged to corresponding lugs 10, formed on one side of the section 2. The arms 8 are extended to one side of the filter-casin g and at their free ends 5o are provided with weights 11, that serve to counterbalance the weight ot' the cover and render easy the operation f openin g and closing the same. Ihe cover 7 is provided with ribs 12 and 13, that extend longitudinally and transversely across the top of the cover and are bifurcated at their ends. Swing-bolts 14 are pivotally connected to lugs 15, formed on the sides of the upper section 2 and rest between the bifurcated ends of the ribs 12 and 13. The upper ends of the swing-bolts are 6o threaded and have tapped thereover handnuts 16, by means of which the cover may be tightly fastened down in place. A gasket 16, of yielding material, is arranged upon the under side ot the cover 7 and serves to eect a 6 5 tight joint between the cover and the upper edges of the section 2 and the partitions 6.

Suspended from the partitions 6 are filterbags 17, preferably formed of textile material, rectangular in crosssection and closed 7o upon all sides excepting the top. Each tilterbag extends nearly the entire width ot the filter-casing, as more clearly shown in Fig. 1, and one ot such bags is arranged between every two adjacent partitions 6, the upper edges of the bags being folded over the upper y edges of the partitions and of the upper section 2, the said edges of one bag lapping the edges of the two adjacent bags, and the bags are clamped and tightly held in position by 8o the cover 7 when the latter is closed and fastened down. Arranged in each bag is a rectangular screen 18, preferably formed of `reticulated Wirework, which serves to keep the filter-bag distended in proper shape, yet at the same time permits the free and uninterrupted passage therethrough of the saccharine juices or syrup.

The bottoms of the iilter-bags and their screens rest upon longitudinal rods19,which 9o are supported on the upper edges of the funnel-shaped bottom of the lower section 1, by which means the filter-bags are prevented from being stretched or torn.

Fitted in suitable apertures formed in the cover 7 and its gasket 16n are nipples 19, one for each iilter-bag, said nipples at their lower ends communicating with the upper ends of the filter-bags and at their upper ends are connected to a manifold 20, the latter in turn roo being connected to a suitable source of water-supply. Perforated pipes 21 are arranged at their other ends project over the edge of the lter-casing and overhang a trough 24,

supported on one side of the filter-casing.v

Around the upper edge of the section 2 is formed an overflow-trough25,that catches any unfiltered juices that may escape between the top of the filter-casing andits cover.

An inlet 26 for the saccharine j uices' or syrup is t-apped through the section l, and said section is also provided with a manhole 27 to afford access to the interior of the filtercasing.

The operation of our improved filter is as follows: The unfiltered saccharine juice is introduced into the filter-casing through the inlet 26 and lls the entire interior of the iilter-casing. The juice iiltrates through the sid es of the filter-bags into the interior thereof, whereby theimpu'rities are separated from the purev saccharine 'j nice,` and the latter rises in the iilter-bags and escapes through the outle t-pipes 23 and by the latter is discharged into the receiving-trough 24. In the course of time the deposit of impurities of the iilter bags tends to clog the latter and impede and render imperfect the operation of the same. Then this occurs, the saccharine juice is drawn o't'f through the outlet 4 and water is admitted to the manifold 2O and is discharged into the lterbags through the nipples 19. Steam or water is also admitted to the manifold 22 and is discharged in numerous small jets upon the exterior of the filter bags through the perforated pipes 2l. The steam or water operates to soften and loosen the impurities deposited on the exterior and in the interstices of the filter-bags, and the water washes the impurities out and away from the bags and from the interior of the filtere casing and finally discharges through the outlet 4. In this operation it is entirely un necessary to disconnect or disturb any of the parts of the filter.

By making the bags rectangular in crosssection and by arranging them side by side and extending them approximately across the entire width of the filter-casing a very large filtering-surface is provided, and by means of the washing apparatus described all the impurities are thoroughly and rapidly loosened and carried off.

Having described our invention, what we claim is- 1. In a filter, the combination with a closed casing, of a series of parallel partitions arranged in the upper portion of said casing,

iilter-bags, rectangular in cross-section, suspended from said partitions, one of said bags being arranged between every two adjacent partitions, the upper edges of the bags being folded over the Lipper edges of the partitions,

a cover arranged on the top of the lter-casing and resting on the folded edges of the filter-bags, discharge-pipes for discharging the contents of the bags, means for clamping the cover in place to bind the folded edges of the bags between the cover and the said partitions, flat, rectangular screens arranged within the filter-bags, and longitudinal rods supported in the bottom of the casing at right angles to the filter-bags, and 'forming supports for the bottoms of the bags and screens, substantially as described.

2. In a filter, the combination with a closed casing, of a series of parallel partitions arranged in the upper portion of said casing, filter-bags suspended from said partitions, one of said bags being arranged between every two adjacent partitions, a cover resting on the top of the filter-casing and said partitions, a water-supplying manifold, and a plurality of nipples, one for each iilterebag, connected at their upper ends to said manifold and coinmunicating at their lower ends with the open ends of the filter-beds, substantially as described and for the purpose specified.

3. In a filter, the combination with a closed casing, of a series of parallel partitions arranged in the upper portion of said casing, filter-bags suspended from said partitions, one of said bags being arranged between every two adjacent partitions, a cover resting on the top of the filter-casingand said partitions,

a water-supplying manifold, a plurality ofnipples, one for each filter-bag, connected at their upper ends to said manifold and communicating at their lower ends with the open ends of the lter-bags, a fluid-supplying manifold, a plurality of perforated pipes arranged longitudinally between the upper portion of the filter-bags and connected at their outer ends with said huid-supplying manifold and an outlet arranged in the bottom of the filtercasing, substantially as described.

4. In a Iilter, the combination with a closed casing of a series of parallel partitions` arranged in the upper portion of said casing, filter-bags rectangular in cross-section' suspended from said partitions, one of said bags being arranged between every two adjacent partitions with their upper edges folded over the upper edges of the partitions, a gasket disposed on the upper edge of the casing and resting on the folded edges of the filter-bags,

.the discharge-pipes, one for each bag, carried by said cover for discharging the contents of the bags, and means for clamping the gasket and cover in place to securely hold the folded edges of the bags, substantially as described. In testimony whereof we have hereunto subscribed our names in the presence of two witnesses.

ARISTIDE L. BARTHELEMY. LOUIS J. BARTHELEMY. Vitnesses:

M. J. LEHMAN, H. L. WICK.

IIC

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