US1788884A - Oil-filter head - Google Patents

Description

Jan. 13, 1931. c. L. MGCUEN OIL FILTER HEAD Filed March 28, 1928 w .m 1 w W a 3 m m m w a m M a a a A 1 m 22 2 8 ,M 8 w M 7 K W w n, K g ,5 i

WMK 94 Patented Jan. 13, 1931 7 UNITED STATES PATENT oFFrcs CHARLES L. McCUEN,- or, LANSING, MICHIGAN, nssrenon 'ro GENERAL MOTORS con- PORATION, onnnrnorr; MICHIGAN; A CORPORATION or DELAWARE ably the crankcase of an internal combustion IL-nuns HEAD Application filed March 28, 1828. serial in. 285,259.

This invention relates to oil filters, and has particular reference to the construction of a head or terminal portion of a filter to adapt it to be secured toa suitable support preferengine used on automotive vehicles. 7

This application is a continuation in part of my application S. N. 238,411, filed Decemher 7, 1927. 7 7

Oil filters as at present used in connection with internal combustion engines of automotive-vehicles are usually secured to the dashboard or cowl pan, and necessitate a'considerable amount of piping to lead the oil from the pump and return thelubricant to the oil pan or thebearings. These oil pipes'are' in the way and the joints will aflord additional points at which leakage may occur; Thereis also the danger of damaging or breaking of the oil pipes which will mean a serious interference with or a destruction of the filtering system. a I

It is the object of the present invention to eliminate the larger portion of the piping, and thereby remove the accompanying pos sible leakage and the danger of breaking, by applying the head or terminal part'of the oil filter directly to the crankcase of the internal combustion engine. This arran ement will eliminate all the piping leading to and from the dashboard, and will make a much simpler construction.

The object of the invention is accomplished a 40 ported in any suitable way, orif desired, may

be left free.

At either side of the securing bolt the filter head has the usual inlet and outlet passages, which in the present invention are of a novel shape and arrangement, and are provided "panying drawing, in which:

with bored nuts or plugs to allow for the attachment of the pipe from the pump or metering means, and a test valve, respectively. The inlet to the filter is ositioned substantially centrally thereof, while the outlet the test valve is applied.

The invention is disclosed on the accom- Figure 1 shows a side view of a filter constructed in'accordance with the invention with the head portion thereof shown in section. Figure 2 is a view showing the head applied to the crankcase, the sectioned part being taken on the line 2'2 of Figure 1.

Referring to the numbered parts on the drawing, the numeral 10 indicates theQcrankcase of an automotive vehicle having a the head 18 is a gasket 22, which will serve.

to make a tight connection when the head is secured to the crankcase.

Passing substantially centrally through the head 18 is an opening 24 for the reception of a securing bolt 26, which has a head 27 and a threaded end 28 secured in a threaded opening 30 formed in the flat portion 14 of the crankcase. When the bolt'26 is screwed home, it will rigidly hold the head and the filter 20 in position. v

\Vhile I have described the surface 16 of the head 18 as flat and adapted to be secured to the fiat portion of the crankcase, it is nevertheless, within the scope to suitably change the form of the surface to permit it to conform to any suitable part of the crankcase. Likewise, the end 28 may extend inside the crankcase and a nut applied thereto; or the bolt 26 may be reversed with the head 27 inside the crankcase and the end 28 extending outward beyond the filter head 18, and a nut applied thereto.

Extending through the head 18 at either side of and at right angles to the bolt opening 24 are inlet and outlet ports or passages 29 and 31 respectively. The inlet port has a bored plug 32, the outer end of which is internally threaded as at 34, to serve as an attaching means for the threaded end 36 of a connection 38 of the piping 40, which leads from the oil pump (not shown) or any suitable metering means and conducts the contaminated oil to the filter 20. The filter 20 has a stud portion 42 to which the filter bag, 46 is secured, and this stud portion has a threaded extension 48 screwed into the opposite internally threaded portion 50 of the plug 32. This stud portion 42 passes through an opening in the stamping or casting 58 and serves as a means of interconnecting the filter bag with the head portion 18 and also holds the plug 32 in position. The inlet plug 32 is provided with a restriction 33 which serves to limit the flow of oil to the filter.

The outlet passage 31 is also provided with the bored plug 52 having its inner end threaded as 'at 54 to enable it to be secured in a threaded opening 56 in a stamping or casting 58, which is positioned on the inside of the filter cover 60.

The plug 52 at substantially its mid portion has a reduced portion 59 forming with the outlet 31 a channel or groove 60. This reduced portion is provided with a plurality of radiating apertures 62 which allow for the egress of the oil from the bore 64 of the plug 52. From the groove 60, the oil flows to the passage 66 (Fig. 2) and into the crankcase through the short tube 68 secured between the head 18 and an opening 70 in the fiat sided portion 14 of the crankcase 10. If desired, the tube 68 may be omitted.

Positioned in the end of the outlet plug 52 is a bleeder or test valve 72 having a threaded portion 74 secured in the internally threaded portion 76 of the plug 52. Beyond the threaded portion 74, test valve 72 has a reduced portion 78 terminating in a conical end 80, which rests on a conical seat 82 formed at a restricted portion 84 of the bore 64. The plug 52 is further provided with a lateral outlet port 86 to allow for the egress of oil when testing the filter.

The operation of the test valve is as follows. By unscrewing the valve or bleeder 72, the tapered end 80 will be lifted from its seat 82 and as the valve is turned so as to allow the tapered end 82 to pass the out- From the construction as above described,

it will be apparent that the oil is led to the filter by a relatively short piece of pipe and is returned directly to the oil pan below the crankcase without any intermediary piping, the crankcase being provided with an opening which conforms to the passage 66 of the filter head to'allow the direct 'return'of the oil. It is therefore obvious that this construction will result in the elimination of the greater portion of the piping which is attendant with the installation of the usual filter, and will also form a very convenient and novel means of positioning the filter. The filter is also placed where it is out of the way and the elimination of the oil lines removes obstructing piping now in use.

The operation of the device is as follows: The oil will be delivered by the, oil pump (not shown) or from a suitable metering arrangement into the pipe 40, from where it will flow into the bore of the plug 32, and then into the filtering material 46 where the impurities will be removed and the oil allowed to pass into the space which exists between the filtering material and the filter can 20. From this space the oil will flow into the bore 64 of the plug 52 through the radial openings 62 and into the groove 60, from where it will pass to the oil line 66 and through the short pipe line 68 through the opening 70 of the crankcase and into the usual oil pan which is secured to the bottom of the crankcase.

While the drawing and description show the bolt 26 as passing substantially centrally through the head and between the inlet and outlet ports, it is nevertheless within the scope of the invention to reverse the positions of the bolt and either the inlet 29 or the outlet 31, or to form an extension at either side of the head and pass the securing bolt through this extension.

If desired, the head instead of having the opening 24 may be left solid and a U-bolt passed around the head and the legs of the U secured in suitable holes in the crankcase. This construction will avoid boring the head.

Suitable gaskets 88 are provided between the plugs 32 and 52 and the head 18 to form a tight connection.

I claim:

1. In a filter head, two passages in said head, bored plugs secured in said passages, an inlet pipe secured to one of said plugs, a test valve secured in the second plug, and means to secure a filter to said head through the intermediary of said plugs.

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