USRE20494E - Filter cartridge and cylinder - Google Patents

Description

Sept. 7, 1937. w. d. BURHANS FILTER CARTRIDGE AND CYLINDER Original Filed Feb. 18, 1935 2 Sheets-Sheet 1 Inventor w. G. BURHANS Re. 20,494

FILTER CARTRIDGE AND CYLINDER 2 Sheets-Sheet 2 original l iled Feb. 18, 1935 Inventor Fui'am named Sept. 7, 1937 v UNITED STATES PATENT orries Original No. 2,068,263, dated January 19, 1937,

Serial No. 7,097, February 18, 1935. Application for reissue April 5, 1937, Serial No. 135,197

. 5 Claims.

This invention relates to a filter like, the general object of the invention being to form the body of the cartridge by a layer of wire mesh and a layer of waste material or the like, with the two layers rolled togetherto provide a substantially solid body, the body being placed in a. bag of fabric and resting on a wire mesh bottom placed in the bottom of the bag.

Another object of the invention is to provide the body with a tubular core.

Another object of the invention is to provide a cylinder for a cartridge having a. by-pass arrangement for by-passing the oil or other fluid around the cartridge when the pressure becomes excessive.

This invention also consists in certain other Fig. 3 is a. vertical sectional view through the.

' improved cylinder.

Fig. 4 is a top plan view of the inner member.-

As shown in these drawings, the letter A indicates the bodyrof the filter cartridge which is composed of wire mesh l and waste material 2 or the like. In carrying out the invention, the layer of waste material is placed on the wire mesh and then the parts are rolled into a cylindrical body as will be seen from Figs. 1 and 2, the layers forming spirals The body is placed in a bag 8 of fabric and a disk I of wire mesh is placed in the bottom of thebag before the body is put in place and I prefer to make the upper end of the cartridge of dome shape as shown in Fig. l with the upper end of the bag fitting snugly this part of the body and suitably fastened at its top as shown in Fig. 1.

Figs. 3 and 4 show a cylinder for containing a cartridge and as shown in these views, the cylinder comprises an outer member or tank I0 having'the cover II with means, not shown, for providing a tight juncture between the cover and the upper end of the tank and within this cartridge for use in a'fllter cylinder for filtering oils and the tank I0 is a smaller tank l2 which has lugs l3 at its upper end for engaging portions of the upper part of the tank I 0 so. as to space the tanks apart. Both tanks have rounded lower ends with their ends connected together by a perforated tube It, the tube having a plug l5 threaded in its lower end. The perforations of the tube communicate with the space 16 between the bottoms of the tanks and a spring-pressed check valve I! normally holds the bottom of the inner tank out of communication with the space l6 and the interior of the tube. A false bottom 18 is provided for the inner tank I! above the rounded bottom thereof and has an opening is centrally arranged therein. An inlet nipple 20 extends through the two rounded bottoms of the tanks and is adapted to be connected to a source of supply and has a port 2| therein opening out into the space between the rounded bottom of the inner tank and the bottom I 8. Of course, the cartridge is placed in the inner tank and rests upon the bottom I8, the top of ,the cartridge being covered by a perforated substantially semi-spherical member 22.

Thus the oil or other fluid flowing from the sup-ply or other container will pass through the nipple 20 and discharge through the port 2| into the bottom of the inner. tank and then pass through the'opening l9 and through the cartridge and then through the member 22 and out through the outlet 23. When the pressure belowthe cartridge becomes excessive, said pressure will move the valve l1 off its seat so that the oil will bypass around the cartridge through the tube I4 and the space 16 and flow out through the outlet 23.

When it is desired to remove-sediment from the bottom of the tank l0, theplug I5 can be removed together with the valve assembly and then the parts can be drained and the sediment will pass through the perforations in the tube M.

The oil collecting in the space between the two tanks will act as a cooling medium for the oil passing through the device and as will be seen from Fig. 3, when the plug I5 is in position, it covers the lower perforations in the tube I so that the by-passed oil will not disturb the sediment in the bottom of the outer tank but whenv It is to be understood that changes may bemade in the construction and in the combination and arrangement of the several parts, provided that such changes fall within the scope of the appended claims.

I claim: a

1. In a filter device, a cartridge cylinder comprising an outer tank, an inner tank spaced from the outer tank, a discharge connection at the top of the outer tank, a filtering cartridge in said inner tank, means for introducing the fluid to be filtered into the bottom of the inner tank below the cartridge, a perforated tube connecting the bottoms of the two tanks together with the perforations connecting the interior of the'tube with the space between the tanks, anda springpressed valve normally closing communication between the tube and the bottom of the inner tank 2. In a filter device, a cartridge cylinder comprising an outer tank, an inner tank spaced from the outer tank, and having its top open and in communication with the top of the outer tank,

a discharge connection at the top of the outer -.tank,. a. filtering cartridge in said inner tank,

means for introducing the fluid to be filtered into the bottom of the inner tank below the cartridge and means for by-passing the fiuid between the tanks when the pressure of the fluid at. the bottom of the inner tank becomes excessive, such means comprising a perforated tube in commutop of the outer tank, a filtering cartridge in said inner tank, mean's'ior introducing the fiuid to be filtered into the bottom of the, inner tank below the cartridge, a perforated tube connected with the bottoms oi the two tanks with its upper end in communication with the bottom of the inner tank, and the perforations connecting the interior of the tube with the space between the tanks, a valve for normally closing communication between the tube and the inner tank and opening when excessive pressure occurs in the bottom oi the inner tank, some of the perforations in the tube being arranged in the upper portion thereof and some in the lowerportion thereof and a plug closing the lower end of the 20,495 I tube and the lower perforations, said plug being removed when the tanks are to be drained.

4. In a filter device, a cartridge cylinder comprising an outer tank, an inner tank spaced from the walls of the outer tankand permanent- 1y secured to the outer tank to form an outer chamber, there being communication between the upper ends of the inner tank and chamber,

a discharge connection for the chamber, a filtering. cartridge removably located in said inner tank, means for introducing the fluid to be filteredinto the bottom of the inner tank below the cartridge, and a connection-between the bottom of the inner tank and the bottom of the chamber including a normally closed springpressed valve arrangement to normally prevent discharge connection for the chamber being substantially above the bottom thereof so that liquid bypassed through the valve arrangement is subiected to a substantial path of upward fiow in which settling of solid matter may occur.

, 5. In a filter device, a cartridge cylinder comprising an outer tank, means'spaced from the walls of the outer tank and permanently secured to the outer tank to provide an outer chamber and an inner cartridge receiving chamber, there being communication between the upper ends of said chambers, a discharge connection for-the outer chamber, a filteringcartridge removably located in said inner chamber, means for introducing the fiuid to be filtered into the bottom of the inner chamberbelow the cartridge, and a connection between ,the bottom of the inner chamber and the bottom of the outer chamber including a normally ;closed spring-pressed valve arrangement to normally prevent flow through the connection but to yield to permit fiow, therethrough when the pressure in the bottom of the inner chamber exceeds a predetermined value,

said connection containing the valve forming the sole communication between the bottoms of the inner and outer chambers and said discharge connection for the outer chamber being substan tiaily above the bottom thereof so that liquid 1137-,

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