US1471807A - Filter - Google Patents

Description

Oct. 23 1923.

1,471,807 I J. A. ROOSEVELT ET AL FILTER Filed Oct. 11. 1921 /z H 10 j 10 15 .9

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Patented Oct 23, 19211 LAYLdii? UNITED STATES PATENT GFFlCE.

JAMES A. ROOSEVELT AND LLOYD S. BGGSE J'ELT, 61'" SAN AIFTOEIIO, TEXAS.

Fill-TEE.

Application filed Uctebei 11, 1923. Serial No. 507,045.

To (ZZZ whom it may concern:

Be it known that we, JAMES A. lioosnvnnr and LLOYD C. Roosnvnnr, citizens of the United States, residing at San Antonio, in the county of B-exar and State of Texas, have invented certain new and useful linprovernents in Filters, of which the foliowing is a specification.

Our invention is a filter intended more particularly for use in connection with ternal combustion motors and has for its object the provision of a simple, inexpensive and efficient device whereby all impuriwill be removed from gasoline, oil or other liquid. The strainers heretofore employed upon gasoline engines in connection with the carburetors or other parts have frequently become clogged and rendered the operation of the motor unreliable and subjected the user to considerable expense owing to the necessity for frequently cleanthe apparatus. By our invention, we provide a very simple filter in which centrifugal action and gravity are utilized before subjecting the oil or other liquid to passage through a strainer so that the oil or gasoline which passes to the working parts of the motor will be freed of all impurities. The invention is illustrated in the accompanying drawings and will be hereinafter fully set forth.

In the drawings Figure 1 is an elevation of a filter em bodying our invention;

Fig. 2 is a vertical section of the Fig. 3 is a plan View.

In carrying out our invention, we employ a cylinder 1 which is provided at its lower end with an inwardly projecting flange 2 and at its upper end with an inwardly projecting flange 3 from the inner edge of which an inner cylinder 4: depends. The cylinder with the flanges and the inner cylinder may be a single casting, the inner cylinder or wall terminating short of the lower end of the outer or main cylinder and providing ample space below its open lower end for circulation of the liquid to be filtered without causing agitation of any impurities which may be deposited in the lower end of the outer cylinder. A dished .ap plate or head 5 is secured to the lower end of the main cylinder by screws or similar :fastenings 6 inserted through the edge same e and the flange 2 and this dislec cap plate, preferred construction S is interposed between e so to pre can the cap plate cyl er as will be readpen the side of the main in r, n ar the upper end thereof, is an my be disposed upon E'CllllTlGtGl er or v angle in erniediate ".l tau, .1 l r dial posil. J i position anolhe zon. ii. plate 10 is secured upon the upper flange 3 and a pa king 11 is inserted. between the said cap plate and the upper end of the main cylinder to prevent leakage uid between the cylinder and the cap plate and an outlet nip ale 12 is provided upon the cap plate the center of the same. Upon the inner surface of the inner cylinder a at the upper end thereof, is a head or projection 13 which supports an inverted co ical screen it, the said screen preferably formed of very fine mesh .vire and provided at its upper end with an annular bead 15 to rest upon the projection 113, as clearly shown in Fig. 2.

1 e liquid to be filtered is drawn through 'ter by a vacuum feeding apparatus or into the same by a gravity or force reed device. Entering the cylinder through the inlet 9, the liquid will be forced to travel in a circular path between the inner and outer cylinders, and a swirling action will ensue so that the heavier particles including dust, dirt and water will be separated from the gasoline or oil by the centrifugal action, as well as by the force of gravity, and will settie to the bottom of the outer cylinder. The oil or gasoline will rise through the inner cylinder and will be thereby carried against the under surface of the inverted conical screen i l and will pass through said screen, the finer particles which may be in suspension in the oil being filtered from the oil and caught by the screen as the oil flows upward therethrough. These finer particles will tend to adhere to the screen while the oil passes through the screen and outlet 12. Should the motor stop, however, or the feed ing action be suspended, the oil will have a slight backward flow and this backward flow nus describei the invention What- '.s new 1s:

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