US 811151 A
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Description (OCR text may contain errors)
c 4S the cylinders D and t extend into a head or flfilltl i no. salati.
Specification oi.' Letters Patent.
Patented Jan. 3G, 1906.
Application filed May 17,1905. Serial No. 260,832.
5 and State of New York, have invented certain new and useful improvements in Filters,
of which the following is a specification.
My invention relates to filters, and has for its object to provide a `lilter which shall be inexpensive to manufacture, ra id in its action, and which can be easily ta en apart for any purpose whatsoever.
My invention will be full described hereinafter, and the features o' novelty will be pointed out in the appended claims.
`Reference is to be had to the accompanying drawings, in which- Figure 1. is a vertical section on line l l of y Fig. 2 of a filter made according to my invention, 'and Fig. 2 is a horizontal section on line 2 2 of Fig. l.
A represents the outer shell of the filter, to which is secured at its lower end an outlet B, which is preferably funnelshaped. A cap C is secure upper end ofthe shell A, said cap C being provided with a neck C', having a central o ening, the purpose of which will be more ully ex lained hereinafter.
is a erforated mantle or cylinder preferably ma e of wire screening, and E is a cylinder of pulp of a kind suitable for filtering pur-- poses. lt is to be understood that the wire cylinder D and the pulp cylindcrE are prepared in a suitable wayso that the ulp will extend into the meshes of the wire cy inder, thus securing the pulp cylinder and the wire cylinder together. These two c flinders D and E, forming ractically a sing eA cylinder, are secured in p ace in the filter-shellA by the following means: A head or ca F, which its over the upper ends of thefcy inders and is provided with a central opening, abuts against the cap C with its central opening in registry with the opening in the ca C. The lower ends of cap also provided witha central opening. Both of theicaps F and G are beveled on the inside, as shown at F and Cr', to more securely hold the cylinders in place. It is also to be understood that the pulp cylinder E is somewhat longer than the wire cylinder D, so
that when the caps are placed on the said cylinders the ends of the pulp cylinder E i5 5 will be turned inward, as shown at E. A ,j supply-pipe H, provided with apertures H in any convenient manner to the and screw-threaded at both ends, extends through the caps C and F into the cylinders lD and E and through the cap G. A nut I, having handles l, is screwed on the lower end of the pipe H, which is closed by a plug H2 and serves to secure the cap Gin position, and a nut J, having handles J', is screwed upon the upper end of the pipe H against the neck C ofthe ca C and serves to hold the two cyl inders firm y in position in the iilter. A nip ple K is secured to or forms art of the nut J and is adapted to receive the end of a rubber tube or other connection communicating with the source from which the liquid to be filtered flows.
As the liquid enters the filter through the apertures H of the supplyipe Ii the pulp cylinder becomes saturate therewith and ands, but owing to the fact that said pu p cylinder is held by the wire cylinder expansion can only take place inwardly to ward the source'of supply, excepting at the ends, where the said cylinder expands to form an absolutely tight joint between it and the two end caps F and G. This arrangement does away with the necessity of having rubber or other gaskets or washers at the ends to form tight joints. in filters of this kind the pulp has been held under great pressure, and as the iiuid to be filtered came n1 contact with the pulp the said pulp began to expand. As the said pulp, however, was prevented from fully expanding it became dense and filtration could only be accoinplished by great pressure. Moreover, what filtration does take place in iilters of this kind is not iiber filtration at all, as theiluid is sim.` ply .forced through the interstices formed by the indiscriminate crossing and crowding of the `libers. These defects are overcome in my device owing'to the fact that the pulp cylinder is permitted to expand toward the center, thus formirj; a liber ilter in which the fibers of the .pulp are free to act in the most cilicient manner as a filtering medium. .An-- other advantage of my structure is the fact that illtrationmln this case is radial--tliat is, from a center of suplilylateral and outward-- so that the surface of intake is smaller than the surface of discharge. This results in the minimizing of friction and also makes the ilter veryfast. My filter also possesses the important advantage of being self-adjustu ab e-that is, it adjusts itself automatically to any degree of pressure of the fluid.
My iilters are not only useful for filtering IOC Q Sinisi water, but. can he used for honey, syrup, oils,
and Varnishes-in fact, anything that can be supplied to them either by gravity or pressure.
Various modifications may be made with- 5 ont departing from the spirit of my invention. I olaim- 1. A. filter comprising two end members or heads', a perforated mantle extending from one'headv to the other, and a pulp lining Von 1o the inner surface of said mantle, the ends of the lining engaging the heads to form tight joints therewith, and the inner surface of the lining being exposed so that the inward expansion of the pulp lining is unrestricted.
I 5 i?. A filter comprising two end members or heads, a perforated inlet-pipe connecting said head, a perforated mantle extending from one head to the other, a shell surrounding said mantle and having an outlet, and a pulp vzo lining on the inner surface of said mantle, the
ends'of the lining engaging the heads to form tight joints therewith, and the inner surface of the lining being e/Xposed so that the inward expansion of the pulp lining is unrestnicited.` 25 3. A filter comprising two end member or heads heveied on their inner surfaces, a perforated mantle extending from one headto tin: other end. engaging said beveled surfaces,
lining engaging the heads to form tight oints therewith, andthe inner surface of the ining being exposed so that the inward expansion of the pulp lining is unrestricted.
5. A filter comprising two end members or 4o heads, a perforated pipe connecting them, a perforated mantle surrounding the pipe and extending from one head to the other, a filterlining on the inner surface of the mantle, a cap engaging one of said heads, means for 45 pressing said oap toward the heads, and a shell connected with said cap and surrounding the mantle.
In testimony whereof I have hereunto set my hand in the presence of two subscribing 5o GEORGE il. KNEUPER.
l/Vitnesseis JOHN LOTKA,' JOHN A. KEHLENBECK.