US2650712A - Engine filter - Google Patents

Description

Sept- 1, 1953 J. c. sLoNNEGER 2,650,712

ENGINE FILTER Original Filed March, 14, 1946 2 Sheets-Sheet l Il l Il' Il l' I| 'lo l|\ 5S ED N E v N a n: l: 'E a i Q N v- Hlm /E am *i E 4 @f /f INVENTOR.

Patented Sept. 1, 1953 ENGINE FILTER John C. Slonneger, Dallas, Tex., assigner to The Continental Supply Company, Dallas, Tex., a corporation of Delaware Application May 1, 1948-, Serial N0. 24,607, which is a division of application Serial No. 654,427, March 14, 1946. Divided and this application November 10, 1949, Serial No. 126,540

1 claim. 1

This invention relates to new and useful improvements in engine oil pumps and filters.

One object of the invention is to provide a pump and iilter or screen arrangement, whereby the screen is readily accessible from the outside of the crankcase and easily removed from the pump and the crankcase through an opening in one of the case walls.

Another object of the invention is to provide a screen arrangement whereby the screen is attached to a cover plate and is detachably connected to the pump, so that when said plate is removed it detaches the screen from the pump and removal of the plate also removes the screen from the crankcase.

Still another object of the invention is to provide a detachable, yet liquid tight connection, between the screen and the pump.

A construction designed to carry out the invention will be hereinafter described together with other features of the invention.

The invention will be more readily understood from a reading of the following specication and by reference to the accompanying drawings, wherein an example of the invention is shown, and wherein:

Fig. 1 is a partial, longitudinal sectional view of an engine equipped with a pump and screen constructed in accordance with the invention,

Fig. 2 is a perspective view, partly in elevation and partly in section, showing a lubricating unit constructed in accordance with the invention, and

Fig. 3 is a longitudinal sectional view of the screen and component parts.

This application is filed as a division of my copending application nled May 1, 1948, Serial No. 24,607, which in turn was a division of my then co-pending application, filed March 14, 1946, Serial No. 654,427, now Patent Number 2,59),134.

In the drawings the numeral i3 designates, in general, the crankcase of an internal combustion engine. The crankcase has a front wall II. A lubricating unit, indicated generally by the numeral I2, includes a block I3 which is fastened or made stationary in the crankcase. A camshaft It is journaled vertically in said block and drives a rotary pump I5, disposed horizontally and attached to the bottom of said block. The pump has an outlet boss I 6 and an oil discharge pipe II leads from the boss to the bottom of a vertical oil passage I8 in the block.

The pump has an inlet nipple I9 on its side facing the crankcase wall II and having an annular fillet 2l) at its intersection with the pump. A cylindrical filter or screen 2l includes a perforated or foraminous shell 22, an inner end wall 23 and an outer end 24. The inner end wall has a central opening 25, the outer annular edge 2S of which is beveled, so that when the nipple I3 is received in the opening, the beveled edge will make a metal-to-metal contact with the fillet 23, whereby a liquid tight seal is had.

The front wall Il has a circular opening 2i which is surrounded by a gasket 2B interposed between the outer face of the wall I I and the inner face of a rectangular cover plate 29, removably fastened on said wall by stud bolts 3l). The cover plate has a boss 3| at the center of its inner face and a stud bolt 32 has its outer end screwed into this boss. The bolt extends through an aperture 33 in the outer end wall 24 of the screen and has a nut 32 adapted to engage the inner side of said wall. The aperture 33 is continued through a boss 35 on the outer side of the wall 24. The boss 35 is directed toward the boss 3I and is preferably of the same diameter so as to support a coil spring 36, having its ends bearing against the plate 29 and the end Wall 24 of the screen. The spring being under compression holds the screen 2| on the nipple I9 and against the fillet 2li so as to form a liquid-tight joint.

Since the screen is immersed in the body of oil in the crankcase I il, it may be lled with filtering material if desired; however the perforations in the wall 22 may be of such size as to nlter the oil passing therethrough. By reason of the spring 36, the screen is yieldably mounted on the pump and slidably mounted on the bolt 32. The bolt 32 being secured to cover plate 29 and the screen being supported by said bolt, it is obvious that when said plate is removed and pulled outwardly, the screen will be withdrawn from the pump i5 through the opening 2. The screen is readily replaced. When the screen is replaced on the nipple I9 and the cover plate is fastened in place, there may be some slack, but the spring 33 will force the beveled edge 26 of end wall 2li against` the nllet 20 and may itself be further compressed when the bolts 30 are tightened.

The foregoing description of the invention is explanatory thereof and various changes in the size, shape and materials, as well as in the details of the illustrated construction may be made, within the scope of the appended claim, without departing from the spirit of the invention.

What I claim and desire to secure by Letters Patent is:

A lubricating oil screen for use in an engine crankcase on the intake of an engine oil pump having a short intake nipple directed toward one 3 wall of the crankcase, said oil screen including an imperforate cover plate adapted to be secured to the crankcase Wall, a bolt immovably secured to and rigidly extending from the plate, an elonn gate unitary foramnous screen having one end slidably mounted on the bolt, retaining means on the bolt Within the screen limiting longitudinal movement of the screen on the bolt away from the plate, a coiled spring between the screen and the plate constantly urging the screen from the plate, the screen having at its opposite end a support adapted to engage the intake nipple, and axially alined bosses on the cover plate and the screen surrounding the bolt, the spring encompassing said bosses.

JOHN C. SLONNEGER.

Name Date Davenport Mar. 24, 1925 Number Number Number Name Date Gregory Jan. 4, 1927 Fisher May 20, 1930 Gardner et al Sept. 20, 1932 Aldham Apr. 14, 1932 Waugh Sept. 8, 1942 Williams Dec. 8, 1942 Smith May 4, 1943 Worthington May 4, 1943 Mieras Mar. 27, 1945 FOREIGN PATENTS Country Date Great Britain Feb. 22, 1934 Great Britain Jan. 9, 1940 Germany Sept. 16, 1896

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