US2153878A - Power oil removal unit - Google Patents

Description

April 11, 1939. E. L. WOOD POWER OIL REMOVAL UNIT Filed Dec. 20, 1957 3 Sheets-Sheet l INVENTOR I Qiood BY Z/ sdzmd TORNEY April 11, 1939. WOOD 2,153,878

POWER OIL REMQVAL UNIT Filed Dec. 20, 1937 3 Sheets-Sheet 2 55 J i g 4 jg INVENZ'OR I A 01mm April H, 193%. E. L. WOOD POWER OIL REMOVAL UNIT Filed Dec. 20, 1937 3 Shets-Sheet 3 INVENTOR By zhzm kdflglbod A T ORNEY Patented Apr. 11, 1939 UNITED STATES PATENT OFFICE 20 Claims.

This invention relates to power oil removal units adapted to remove oil from the crankcase of internal combustion engines of automobiles and the like.

One object of this invention is to provide improved, novel, positive, inexpensive means for quickly removing oil from the crank case of internal combustion engines and the like with a vacuum created in an oil receiver by suction from the intake manifold of the said engine when running.

Another object of this invention is to provide a connector fixed with respect to a motor vehicle having an air suction tube and an oil suction tube therefrom connected to the intake manifold and extending to the low point of the crankcase of the engine of the said vehicle respectively, the said connector being adapted to be hermetically engaged by oil receiving means which applies suction from the'air suction tube to the oil suction tube and thereby causes oil to be withdrawn from the said crankcase into the said 011 receiving means.

Another object of the invention is to provide a power oil removal unit comprising a connector permanently fixed with respect to a motor vehicle having an air suction tube and an oil suction tube therefrom connected to the intake manifold and extending to the low point of the crankcase of the engine of the said vehicle respectively, the said air suction tube being normally closed at its unconnected end by a suitable valve, and oil receiving means adapted to be removably fixed in hermetically sealed relationship to the said connector over the unconnected ends of the said suction tubes and simultaneously open the said valve at the unconnected end of the said air suction tube whereby to create, a vacuum in said oil receiving means for removing oil from the crankcase of said engine thereinto.

Another object of this invention is to provide a power oil removal unit comprising a connector permanently fixed with respect to a motor vehicle having an air suction tube and an oil suction tube therefrom connected to the intake manifold and extending to the low point of the crankcase of the engine of the said vehicle respectively, the said air suction tube being normally closed at its unconnected end by a suitable valve, and oil receiving means adapted to be removably fixed in hermetically sealed relationship to the said connector over the unconnected ends of the said suction tubes and simultaneously open the said valve at the unconnected end of the said air suction tube whereby to create a vacuum in said 011 receiving means for removing oil from the crankcase of the said engine thereinto, the said oil receiving means having a vacuum relief aperture therethrough suitably located to admit of manual control of the vacuum created therein.

Other objects of the invention will become apparent by reference to the following detailed description taken in connection with the accompanying drawings, in which:

Fig. 1 is a view part in section and part in elevation showing the connector of a power oil removal unit embodying the invention moun ed on and connected in operating relationship to an internal combustion engine with the oil receiver of the said oil removal unit suspended from and removably fixed to the said connector in hermetically sealed relationship thereto.

Fig. 2 is an enlarged detailed fragmentary sectional view through the connector of the power 011 removal unit showing an oil receiver suspended therefrom, removably. fixed in hermetically sealed relationship thereto, and simultaneously holding open the air valve normally closing the unconnected end of the air suction tube thereof.

Fig. 3 is a ew part in section and part in elevation taken 3n the line 33 of Fig. 2.

Fig. 4 is a view similar to Fig. 3 showing a modified construction of means for supporting the oil receiver over the unconnected ends of the oil and air suction tubes.

Fig. 5 is a horizontal sectional view taken on the line 5-5 of Fig. 4.

Fig. 6 is a fragmentary vertical sectional view taken on the line 66 of Fig. 4. I

Fig. 7 is a horizontal sectional view similar to Fig. 5 showing the normal position of the spring which compensates for the resiliency and wear of the sealing ring of the connector.

Fig. 8 is an enlarged cross sectional view similar to Fig. 2 showing the connector when not in use with a dust shield positioned thereover and prevented from rattling by the resilient sealing ring of the said oil receiver.

Fig. 9 is a detailed fragmentary sectional view similar to Fig. 2 showing the coupling of a sentinel type oil receiver to the connector of the power oil removal unit.

Fig. 10 is an enlarged sectional view taken on the line l0lll of Fig. 9 showing a preferred means for the simultaneous chucking of the air and oil suction hoses from the sentinel type oil receiver to the means for coupling the sentinel type oil receiver to the said connector.

Figxll is a view part in section and part in elevation showing a typical embodiment of a sennumerals refer to like and corresponding parts throughout the several views, the embodiment of the invention disclosed therein comprises, a power oil removal unit composed of a connector l permanently mounted by means of a suitable bracket I l on the block or an internal combustion engine l2. Although the connector of the power oil removal unit is disclosed herein secured on the block of an internal combustion engine it is contemplated that the connector may be mounted elsewhere if desired but fixed-with respect to the said engine or the body of a, motor vehicle propelled thereby, The said connector III has an air suction line l3 therefrom connected to a source of suction such as the intake manifo d (not shown) of the said internal combustion engine 12. An oil suction line l4 from the connector l0 preferably extends through the upper portion of the crankcase l5 of the said internal combustion engine l2 to the low point l6 thereof. The said oil suction line I4 is preferably secured to and through the said crankcase l5 by such means as a split sleeve nut I! which squeezes the said oil suction line l4 when the said nut is tightened into the said crankcase I5. A s'plit spring lock washer I8 is preferably used between the head of the sleeve nut 11 and the crankcase l5 to prevent the said split sleeve nut I! from becoming loosened by the vibration of the said in ternal combustion engine l2. An oil receiver I 9 having a suitable spent oil container 20 threaded thereto is adapted to be supported from and positioned in hermetically sealed relationship to the said connector over the unconnected ends of the said air suction line l3 and oil suction line l4 as best indicated in Fig. l. A gasket 2| between the annular shoulder 22 of the said container and the oil receiver l9 assures an airtight coupling therebetween.

The novel construction of the connector in and the oil receiver l9 including the means for suspending the said oil receiver l9 into hermetically sealed relationship over the unconnected ends of the air suction line l3 and the oil suction line I4 is shown in detail in Figs. 2 and 3 while a modifled construction of the said suspending means is shown in Figs. 4 to 7 inclusive. Fig. 8 shows the connector l0 when not in use having a dust shield positioned in antirattle relationship thereover;

The front of the connector [0 is preferably formed disk shaped with an annular lip 23 therearound disposed forwardly therefrom. The said connector [0 is provided with a generally vertically disposed rearward protuberance to accommodate air and oil suction connections as hereinafter described. A centrally disposed boss 24 at the extreme rear of the said connector is bored and threaded at 25 for receiving the machine screw 26 by means of which the said connector I0 is secured to the bracket II. A suitable lock washer 21 interposed between the bracket l l and the head of themachine screw 26 prevents the said machine screw from loosening due to vibration of the lock of the internal combustion engine I 2. A pair of tabs 28 projecting from the said boss 24 fit into complementary apertures formed in the said bracket H and prevent the said connector Ill from rotating with respect to the said bracket l I. A machine screw 23 and lock washer 30 is preferably used to secure the said bracket l i to the engine block l2, see Fig. 1.

A tubular projection 3| formed integral with the connector l0 and extending radially upward therefrom frictionally receives the air suction tube l3 thereover whereby a permanent connection between the connector l0 and a source of suction is accomplished. The vertical bore 32 of the said tubular projection 3| extends downwardly from the top of the said connector l0 until its communicates with the horizontally disposed bore 33 preferably located on the vertical axis of the said connector ID positioned above the center of the said connector l0 and extending rearwardly from the disk shaped face thereof, all as illustrated in Fig. 2. I

A suitable air valve 34 seated in the base of a thimble 35 threaded in the horizontally disposed bore 33 is normally maintained in its closed position by the compression spring 35. The stem of the said air valve 34 is preferably shouldered as indicated in the drawings and has a plunger 31 riveted on the end thereof, the said plunger 31 is cylindrical shaped of a smaller diameter than the inside diameter of the said thimble 35 and has a plurality of radially outwardly disposed guides 38 integral therewith and coextensive therealong which centers the said plunger 31 within the said thimble 35. The compression spring 36 reacts against the bottom of the said thimble 35 and engages the inwardly disposed ends of the said guides 38 for constantly urging the air valve 34 into its closed position seated in the bottom of the said thimble 35.

A forwardly disposed tubular projection 39 formed integral with the said connector I0 preferably located on the vertical axis of the said connector in and spaced below the said air valve 34 serves as the unconnected end of the oil suction line H. The horizontal bore 40 of the said forwardly disposed tubular projection 39 extends inwardly from the front 01. the said connector l0 until it communicates with a vertically disposed bore 41 preferably located on the vertical axis of the said connector I0 extending from the bottom of the said onnector I 0 upwardly a sufii cient distance to communicate with the said horizontal bore 40. The bottom of the said vertically disposed bore 4| is suitably threaded at 42 to receive a flared tube fitting 43 onto which the flared end of the oil suction tube I4 is connected by means of a flared tube connector nut 44.

The bracket 1 i is preferably extended up the back and across the top of the said connector Ill and is formed into a vertically disposed support H0 from which oil receiving means is removably suspended and positioned in hermetically sealed relationship over the unconnected ends of the said air and oil suction tubes l3 and I4 respectively. The said support H0 extends above the top of the said connector l0 and is spaced forward of the vertically disposed tubular pro- J'ection 3| thereof. The horizontally disposed portion of the said bracket II which extends across the top of the said connector in is preferably provided with an aperture 45 through which the said vertically disposed tubular projection 3! of the said connector I0 is telescoped as best illustrated in Fig. 2. Although the support H0 is disclosed herein integral with the bracket I I, the said support I I0 may be formed integral with the said connector ill or it may be of a separate piece of material suitably secured to the said connector l0.

The said support H0 is suitably horizontally grooved near the top thereof to provide a pair of spaced vertically disposed tabs 46 adapted to serve as guides for accurately positioning oil receiving means into hermetically sealed relationship against the said connector Ill over the unconnected ends of the air suction line l3 and the oil suction line l4 as hereinafter described.

An annular sealing ring 41 of rubber or other suitable material is suitably secured or positioned against the front of the said connector l0 radially within the forwardly disposed annular lip 23 therearound.

The oil receiver I9 is preferably formed elbow shaped as best illustrated in Fig. 1 and has the lower bell shaped depending end 48 thereof internally threaded to permit the same to be secured in hermetically sealed relationship to the complementarily threaded neck 49 of the container 20. The throat of the oil receiver I8 is preferably provided with a plurality of external longitudinally disposed circumferentially spaced ribs 50 as indicated in Figs. 1 and 3 to aid in cooling the exterior surface thereof which often becomes heated from hot oil passing therethrough.

The laterally disposed open annular end of the said oil receiver I9 is of such a diameter as will permit the same to register with the sealing ring 41 of the said connector l0 and is preferably provided with an annular groove 5| to assure a hermetically sealed joint between the said oil receiver I9 and the connector II] when positioned thereagainst.

The said oil receiver I9 is preferably provided with a ridge 52 disposed inwardly of the annuiarly grooved laterally disposed open end thereof sufliciently close to the said laterally disposed open end of the oil receiver is to cause oil drawn by suction from the bore 40 of the said tubular proiection 39 which serves as the unconnected end of the oil suction line l4 to spew or drip down the throat of the said connector l9 thereby preventing an accumulation of oil in the end of the oil receiver l9 adjacent to the annular sealing ring 41 of the said connector Ill when the oil removal unit is in use.

The said oil receiver I9 is preferably provided with a hooked shaped strap hanger 53 on the outside of the top thereof and an air valve contactor 54 on the inside of the top thereof both of which are preferably secured to the said oil receiver by such means as the through rivets 55 as best illustrated in Fig. 2. The said hooked shaped strap hanger 53 is so formed as to engage the said oil receiver support H0 vertically disposed on top of the said connector in between the spaced vertically disposed tabs 46 of the said support H0 as indicated by the dot and dash lines in Fig. 1 when the oil receiving means is being positioned in operating relationship with the said connector Ill. The said oil receiver I 9 is accurately guided by the cooperation of the said hooked shaped strap hanger 53 with the said support H0 into hermetically sealed relationship with the connector ID with the laterally disposed annular grooved open end of the said oil receiving means IS in sealed engagement against the annular sealing ring 41 of the said connector I0 as indicated by the full lines in Fig. 1 and as shown in detail in Fig. 2, at which time the said air valve contactor 54 of the said 011 receiving means 19 has contacted the air valve 34 of the said connector l0 and has opened the same as indicated in Fig. 2.

The said oil receiver I9 is preferably provided with a suitably disposed vacuum relief aperture 56 therethrough which prevents a vacuum from being built. up in the oil receiver l9 and its container 20 unless the said vacuum relief aperture is plugged up by the finger or thumb of the operator of the power oil removal unit.

Although the connector III has been shown and described with the unconnected end of the air suction line H and the unconnected end of the oil suction line [4 horizontally disposed, it is readily observed that, if the connector III is mounted or constructed so that the unconnected ends of the air suction line l3 and the oil suction line l4 are otherwise disposed and if the unconnected end of the oil suction line H is not positioned so that oil spewing therefrom will enter the unconnected end of the air suction line l3, the device will operate perfectly requiring but a simple change in the shape of the oil receiver Hi to accommodate it to any altered disposition or location of the unconnected ends of the air suction line l3 and the oil suction line l4 or to any rearrangement of the construction of the connector l0 per se. In rearranging the construction of the connector I! and correspondingly changing the shape of the oil receiver l9 any suitable means may be used for removably fixing the oil receiving means in hermetically sealed relationship to the said connector l0 and over the unconnected ends of the said air suction tube l3 and oil suction tube l4.

The outer periphery of the forwardly disposed annular lip 23 of the said connector Ill is provided with diametrically opposite preferably cylindrical tabs 51 by means of which a cup shaped dust shield 58 provided with suitable diametrically oppositely disposed bayonet slots is removably secured over the front of the said connector III as best illustrated in Fig. 8. It will be noted that the shape of said cup shaped dust shield 58 is such as will engage the outwardly disposed annular face of the said annular sealing ring 41 and slightly compress the same whereupon the said sealing ring 41 constantly urges the said dust shield 58 in tensional relationship to the said tabs 51 whereby the said dust shield 58 is prevented from rattling when the connector I0 is vibrated by the engine l2.

Referring now to Figs. 4 to 7 inclusive, the modified construction of means for supporting the oil receiver l9 over the unconnected ends of the oil and air suction tubes l3 and I4 respectively shown therein compensates for the resiliency and any wear of the sealing ring 41 of the connector l0 and thereby assures a perfect hermetic seal at all times between the annularly grooved end 5| of the oil receiver l9 and the annular sealing ring 41 of the said connector I I). The vertically disposed support H00 is identical in every respect to the vertically disposed support 0 shown in Figs. 2 and 3 except that it is not formed integral with the bracket II but is secured to the top of the connector ill by such suitable means as the machine screws 59. The hooked shaped strap hanger 530 is similar to the hook shaped strap hanger 53 disclosed in Fig. 2 except that it is provided with a horizontally disposed portion 53l adapted to slide over the grooved top of the said support I l 00 between the spaced vertically disposed tabs 46 thereof. The said support H00 is provided with a pair of vertically oppositely diagonally disposed slots 60 wh ch accommodate a bow-type spring 6| as best illustrated in Fig. 7. The said bow-type spring 6l is suitably crimped at its extreme ends 62 for retaining the same positioned in the said slot 60 of the support H00.

When the oil receiver l9 equipped with a hooked shaped strap hanger 530 having a horizontally disposed portion 53| as hereinbefore described is engaged over the said support illlli, the vertically disposed hooked portion 532 of the said hooked shaped strap hanger 530 engages the bow-type spring 5| of the said support Hill which spring 6| permits the said oil receiver I! to be suspended from the said support H" at a suitable place along the horizontally disposed portion 5H of the said hook shaped strap hanger 530 in accordance with the resiliency and wear of the annular sealing ring 41 thereby causing the annularly grooved face 5| of the said oil receiver I! to engage the said annular sealing ring 41 of the said connector l. with substantially equal horizontal pressure therearound. Construction not shown in the fragmentary Figs. 4 to '7 inclusive is preferably similar in every respect to the construction shown in detail in Figs. 2 and 3.

The embodiment of the power oil removal unit disclosed in Figs. 9 to 11 inclusive is similar to the embodiment of the power oil removal unit disclosed in Figs. 1,2, 3 and 8 except that a sentinel type oil receiver 53 is used instead of the portable oil receiver I! and that an underground spent oil container or tank 64 is substituted for the oil container 20. The said sentinel type oil receiver 63 has an air suction hose 85 and an oil suction hose 56 extending therefrom to a suitable coupler 61 which is adapted to engage the connector I in such a manner as to apply suction from the air suction tube to the oil suction tube and cause oil to be withdrawn from the oil suction tube into the said sentinel type oil receiver 63.

A suitable valve 58 is provided in the drain line 59 between the said sentinel type oil receiver 63 and the underground spent oil container 54 to permit the sentinel type oil removal unit to operate without the necessity of building up a vacuum in the underground spent oil container 64 when the said valve 68 is closed. By closing. off the underground spent oil container 64 from the sentinel type oil receiver 53 when the oil removal unit is in use, a considerable time is saved in applying suction from the air suction line Hi to the oil suction line i 4 and creating a vacuum in the said oil receiver 53 for causing oil to he withdrawn from the crankcase of an internal combustion engine into the said sentinel type oil receiver 63. After the sentinel type oil receiver 63 is filled with spent oil from the crankcase of an internal combustion engine, the said sentinel type oil receiver 53 may be emptied by opening the said valve 68 in the said drain line 59 whereupon oil from the sentinel type oil receiver 63 drains through the said drain line 59 into the underground spent oil container 64.

It is therefore observed that the operation of the sentinel type oil removal unit disclosed in Figs. 9 to 11 inclusive is precisely the same as the operation of the portable type oil removal unit disclosed in Figs. 1, 2, 3 and 8 except that a spent oil container 64 of the sentinel type oil receiver 53 may be temporarily disconnected or sealed off from the said sentinel type oil receiver 53 while the sentinel type oil removal unit is in use whereas no means is provided for disconnecting the container 2! of the. portable oil receiver i9 disclosed in Fig. 1 while the portable oil removal unit is in use.

The connector ll disclosed in Fig. 9 is similar in every respect to the connector ||i disclosed in Figs. 2, 3 and 8 and hereinbefore described in detail.

The coupler 61 shown in detail in Fig. 9 is 10 thereof a sufllcient distance to permit the said oil hose sleeve 12 to be in alignment with the unconnected end 39 of the oil suction line H of the connector |0 when the said coupler 61 is properly positioned against the said connector A suitable washer and guide 13 is positioned in the cup 14 integrally formed inthe said coupler 61 at one end of the said oil suction hose sleeve 12 for assuring an oil tight connection between the oil suction hose sleeve 12 and the unconnected end of the oil suction line H of the connector l0 when the said coupler 51 is positioned in hermetically sealed relationship against the said connector Ill.

The oil suction hose 65 is preferably frictionally engaged over the end of the said oil suction hose sleeve 12 opposite the cupped end thereof in telescopingly spaced relationship within the said air suction hose sleeve 1| as best illustrated in Fig. 9. The air suction hose 65 which has an in side diameter considerably larger than the outside diameter of the oil suction hose 58 and through which the said oil suction hose 66 is telescoped, is preferably frictionally engaged and secured over the air suction hose sleeve 1| as hereinafter described.

The said air suction hose 65 is preferably clamped to the said air suction hose sleeve 1| by means of tapered semi-crescent shaped wedges 15 over which a complementarily tapered ring 15 is drawn by threading the said tapered ring 16 onto the threaded end 11 of the said coupler 51. Pliable gaskets 18 and 19 provide means for hermetically sealing the joints between the wedges 15, and between the wedges 15 and the tapered ring 16, respectively. A key 8|] preferably integral with the said coupler 81 positioned on the vertical axis thereof prevents the said semi-crescent shaped tapered wedges 15 from rotating within the said complementarily tapered ring 15 when the said wedges are being tightened against or loosened from the air suction hose 65 and the air suction hose sleeve 1|.

A short length of spring wire hose guard 8| is preferably telescoped over the air suction hose G5 and securely clamped thereto by a suitable clamp 82 positioned around the projecting end of the said air suction hose sleeve 1| as best illustrated in Fig. 9. The said spring wire hose guard 8| prevents the air suction hose 65 from kinking at the end of the coupler 61. A suitable air passage aperture 83 is provided through the air suction hose sleeve 1| as indicated in Fig. 9 to permit air to be drawn from the air suction hose 65 through the airsuction line l3 when the coupler 51 is positioned in hermetically sealed relationship to the annular sealing ring 41 of the said connector Ill and when the air valve 34 normally closing the unconnected end of the said air suction line l3 at the connector I0 is opened as hereinafter described.

The said coupler 51 is preferably provided with a hook shaped strap hanger 84 on the outside of the top thereof and an air valve contactor 85 on the inside of the top thereof both of which are secured to the said coupler 61 by such means as the through rivets 86 as best illustrated in Fig. 9. The said hook shaped strap hanger 84 is so formed as to engage the said oil receiver support H9 vertically disposed on the top of the said connector l9 between the spaced vertically disposed tabs 46 of the said support IIII whenthe coupler 61 is being positioned in operating relationship with the connector Ill. The said coupler 61 is accurately guided by the cooperation of the said hook shaped strap hanger 84 with the said support II9 into hermetically sealed. relationship with the connector I9 with the laterally disposed annular grooved open end of the said coupler 61 in sealed engagement with the annular sealing ring 41 of the said connector I9, at which time the said air valve contactor 85 of the said coupler 6'! has contacted the air valve 34 of the said connector I9 and has opened the same as indicated in Fig. 9.

Although not shown, the said coupler 61 may be provided with a suitably disposed vacuum relief aperture therethrough similar to the vacuum relief aperture 56 of the said oil receiver I9 for preventing a vacuum from being built up in the sentinel type oil receiver 63 unless the said vacuum relief aperture is plugged up by the finger or thumb of the operator of the power oil removal unit.

The sentinel type oil receiver 63 is preferably formed bottle shaped of glass having a threaded upper neck 91 onto which the-air suction hose 65 is hermetically connected by a suitably threaded cap 88 through which the said oil suction hose 66 centrally depends a short distance into the said oil receiver 63 in telescopingly spaced relationship thereto. The said oil receiver 63 is preferably provided with a. tapered lower neck 89 which is frictionally sealed within the funnel shaped connection 99 disposed on the top of the drain line 69. A compressible tapered washer 9| assures a hermetic seal between the said tapered lower neck 89 of the said oil receiver 63 and the said funnel shaped drain line connection 99.

The said oil receiver 63 is preferably supported on a tubular metal post 92 having a metal base 93 welded thereto, which base is in turn suitably secured to a concrete curb 94. The top of the said tubular metal post 92 is preferably provided with an annular dish shaped oil receiver support 95 onto which the said oil receiver 63 is positioned with a suitable annular compressible dish shaped gasket 96 therebetween.

A suitable ornamental cap 91 preferably having a sign globe 98 thereon and having an annular dome shaped bottom 99 is positioned over the top of the said oil receiver 63 with a compressible annular dome shaped gasket I99 therebetween. The said cap 91 is preferably provided with a sleeve I M at one side thereof through which the air suction hose 65 enters. A short length of spring wire hose guard I92 adapted to prevent the said air suction hose 65 from kinkingat the said sleeve IN is secured around the said hose 65 and anchored to the said sleeve I9I by such means as an internally circumferentially scored anchorage sleeve I93 threaded over the said sleeve I9I of the said ornamental cap 91.

The said annular dome shaped bottom 99 of the said ornamental cap 91 is provided with a plurality of circumferentially spaced radially projecting vertically disposed anchorage lugs I94 having a vertically disposed threaded bore in the bottom thereof to accommodate the threaded end of the anchorage rods I95. The said annular disk shaped oil receiver support 95 is pro vided with a plurality of like circumferentially spaced vertically disposed radially projecting anchorage lugs I96 having a vertically disposed threadedbore in the top thereof to accommodate the threaded end of the said anchorage rods I95. The threads at the opposite ends of the said anchorage rods I95 are oppositely pitched and the threads of the vertical bores of the anchorage lugs I94 and I96 respectively are oppositely pitched so that when the said anchorage rods I85 are threaded thereinto the said anchorage rods I95 will tensionally secure the said sentinel type oil receiver 63 in assembled relationship .on

its pedestal 92 with the ornamental tap 91 thereover as best illustrated in Fig. 11.

The tubular metal post 92 of the said sentinel type oil receiver 63 is preferably slotted at I91 through which the operating lever I98 of the valve 68 of the drain line 69- projects. When the said drain valve lever I98 is in the upward position as indicated by the full lines in Fig. 11

the sentinel type oil removal unit is ready to operate without the necessity of building a vacuum in the underground spent oil container 64. After oil has been removed from the crankcase of an internal combustion engine to the sentinel type oil receiver 63 and the said 011 receiver 63 is filled with spent oil, the valve 68 in the drain line 69 between the oil receiver 63 and the underground spent oil container 64 is opened by moving the drain valvelever I98 to the position indica'ted by the dotted lines in Fig. 11 whereupon thesaid oil receiver 63 is emptied by gravity into the underground spent oil container 64.

It is readily observed from the foregoing description and the accompanying drawings that when a motor vehicle is equipped with a connector I9 embodying the invention, the motorist may remove spent oil from the crankcase of the internal combustion engine of the said motor vehicle when the said engine is running by positioning the portable oil receiver I9 having a spent oil container, 29 connected thereto over the unconnected ends of the said air suction line I3 and oil suction line I4 as hereinbefore described, or, the motorist may drive into a gasoline station equipped with a sentinel type oil receiver 63 and have 011 removed from the crankcase of his engine while the engine is running by connecting the said sentinel type oil receiver 63 over the unconnected ends of the air suction line I3 and the oil suction line I4 of the connector l9 by means of the coupler 61. as hereinbefore described. In either event, oil is removed from the crankcase of the internal combustion engine of the said vehicle with a vacuum created in an .oil receiver by suction from the intake manifold of the said engine of the said vehicle when running.

Although but two embodiments of the invention and one modification thereof have been disclosed and described in detail, it will be understood that various changes including the size, shape, arrangement and details of the various parts thereof may be made without departing from the spirit of the invention, and it is not my intention to limit the scope of the invention other than by the terms of the appended claims.

I claim:

1. In combination with a motor vehicle, a connector mounted on said motor vehicle, an air suction tube connected to the intake manifold of the engine of the said motor vehicle, an oil suction tube communicating with the low point of the crankcase of the said engine, the unconnected ends of the said suction tubes being mounted on the said connector, the said connector being adapted to support and position means for applying suction from the said air suction tube to the said oil suction tube in hermetically sealed relationship over the unconnected ends of said suction tubes whereby oil is removed from the crankcase of the said engine into an oil receiver.

2. In combination with a motor vehicle, a connector mounted on said motor vehicle, an air suction tube connected to the intake manifold of the engine of the said motor vehicle, an oil suction tube communicating with the low point of the crankcase of the said engine, the unconnected ends of the said suction tubes being mounted on the said connector, and an oil receiver adapted to be removably fixed in hermetically sealed relationship over the said unconnected ends of the said suction tubes whereby to apply suction from, the air suction tube to the oil suction tube which removes oil from the crankcase of the said engine into the said oil receiver.

3. In combination with a motor vehicle, a connector mounted on said motor vehicle, an air suction tube connected to the intake manifold of the engine of the said motor vehicle, an oil suction tube communicating with the low point of the crankcase of the said engine, the unconnected ends of the said suction tubes being mounted on the said connector, and supporting means fixed with respect to the said connector from which oil receiving means may be removably suspended and positioned in hermetically sealed relationship over the unconnected ends of the said suction tubes whereby suction is applied from the air suction tube to the oil suction tube which removes oil from the crankcase of the said engine into the said oil receiver.

4. In combination with a motor vehicle, a connector mounted on said motor vehicle, an air suction tube connected to the intake manifold of the engine of the said motor vehicle, an oil suction tube communicating with the low point of the crankcase of the said engine, the unconnected ends of the said suction tubes bein mounted on the said connector, a support for oil receiving means on said connector, a sealing ring. on said connector, and oil receiving means adapted to be suspended from said support in hermetically sealed relationship against said sealing ring and apply suction from the said air suction tube to the said oil suction tube whereupon oil is removed from the crankcase of the said engine into the said oil receiving means. I

5. In combination with a motor vehicle, a connector mounted on said motor vehicle, an air suction tube connected to the intake manifold of the engine of the said motor vehicle, an oil suction tube communicating with the low point or the crankcase oi the said engine, the unconnected ends of the said suction tubes being mounted on the said connector, a support for oil receiving means on said connector, a sealing ring on said connector positioned around the uncon-- nected ends of said suction tube, an oil receiver, and means on said oil receiver adapted to cooperate with said oil receiver support to accurately suspend said oil receiver in hermetically sealed relationship over the unconnected ends of said suctiontubes against said sealing ring whereupon oil is removed from the crankcase oi the said engine into the said oil receiver,

6. In combination with a motor vehicle, a connector mounted on said motor vehicle, an air suction tube connected to the intake manifold of the engine of the said motor vehicle, an oil suction tube communicating with the low point of the crankcase of the said engine, the unconnected ends of the said suction tubes being mounted on the said connector, a sealing ring on said' connector positioned around the unconnected ends of the said suction tubes, oil receiving means, and means for accurately suspending said oil receiving means in hermetically sealed relationship over the unconnected ends of said suction tubes and against said sealing ring on said connector comprising a support having a pair of spaced guides integral therewith on said connector and a hangar secured to said oil receiving means formed to engage said support between said guides.

7. In combination with a motor vehicle, a connector mounted on said motor vehicle, an air suction tube connected to the intake manifold of the engine of the said motor vehicle, an oil suction tube communicating with the low point of the crankcase of the said engine, the unconnected ends of the said suction tubes being mounted on the said connector, a sealing ring on said connector positioned around the unconnected ends of the said suction tubes, oil receiving means, and means for accurately suspending said oil receiving means in hermetically sealed relationship over the unconnected ends of said suction tubes and against said sealing ring on said connector comprising a support having a pair of spaced guides integral therewith on said connector and a hangar secured to said oil receiving means formed to engage said support between said guides, the said suspending means being adapted to compensate for resiliency and wear of the said sealing ring.

8. In combination with a motor vehicle, a connector mounted on said motor vehicle, an air suction tube connected to the intake manifold of the engine of the said motor vehicle, an oil suction tube communicating with the low point of the crankcase of the said engine, the unconnected ends of the said suction tubes being mounted on the said connector, a sealing ring on said connector positioned around the unconnected ends of the said suction tubes, oil receiving means, and means for accurately suspending said oil receiving means in hermetically sealed relationship over the unconnected ends of said suction tubes and against said sealing ring on said connector comprising a support having a pair of spaced guides integral therewith on said connector and a hangar secured to said oil receiving means formed to engage said support between said guides.

9. In combination with a motor vehicle, a connector mounted on said motor vehicle, an air suction tube connected to the intake manifold of the engine of the said motor vehicle, an oil suction tube communicating with the low point or the crankcase of the said engine, the unconnected ends of the said suction tubes being mounted on the said connector, a sealing ring on said connector positioned around the unconnected ends of the said suction tubes, oil receiving means, and means for accurately suspending said oil receiving means in hermetically sealed relationship over the unconnected ends of said. suction tubes and against said sealing ring on said connector comprising a support having a pair of spaced guides integral therewith .on said connector and a hangar secured to said oil receiving .means formed to engage said support between said guides, the said suspending means being adapted to compensate for resiliency and wear of the said sealing ring.

10 In combination with a motor vehicle, a connector mounted on said motor vehicle, an air suction tube connected to the intake manifold.

of the engine of the said motor vehicle, an oil suction tube communicating with the low point of the crankcase of the said engine, the unconnected ends of the said suction tubes being mounted on the said connector, an air valve normally closing the unconnected end of the said air suction tube, and an oil receiver adapted to be removably fixed in hermetically sealed relationship over the said unconnected ends of the said suction tubes and hold the said air valve open whereby to apply suction from the air suction tube to the oil suction tube which removes oil from the crankcase of the said engine into the said oil receiver. 1 v

11. In combination with a motor vehicle, a connector mounted on said motor vehicle, an air suction tube connected to the intake manifold of the engine of the said motor vehicle, an oil suction tube communicating with the low point of the crankcase of the said engine, the unconnected ends of the said suction tubes being mounted on the said connector, an air valve normally closing the unconnected end of the said air suction tube, and supporting means fixed with respect to the said connector from which oil receiving means is removably suspended and positioned in hermetically sealed relationship over the unconnected ends of the said suction tubes and against said air valve whereby the said air valve is opened and suction is applied from the air suction tube to the oil suction tube which removes oil from the crankcase of the saidengine into the said oil receiver.

12. In a power oil removal unit, in combination, a connector mounted on a motor vehicle, an air suction tube connected to the intake manifold of the engine of the said motor vehicle, an oil suction tube communicating with the low point of the crankcase of the said engine, the unconnected ends of the said suction tubes being mounted on the said connector, and an oil receiver adapted to be removably fixed in hermetically sealed relationship over the said unconnected ends of the said suction tubes whereby to apply suction from the air suction tube to the oil suction tube which removes oil from the crankcase of the said engine into the said oil receiver, the said oil receiver having a vacuum relief aperture therethrough which prevents a vacuum from being built up in said oil receiver until the said aperture is plugged by the operator of the said oil removal unit.

13. In a power oil removalunit, in combination, a connector mounted on a motor vehicle, an air suction tube connected to the intake manifold of the engine of the said motor vehicle, an oil suction tube communicating with the low point of the crankcase of the said engine, the unconnected ends of the said suction tubes being mounted on the said connector, a sealing ring on said connector positioned around the unconnected ends of the said suction tubes, and oil re-' ceiving means including means for accurately suspending said oil receiving means in hermetically sealed relationship over the unconnected ends of said suction tubes and against said sealing ring on said connector comprising a support having a pair of spaced guides integral therewith on said connector and a hangar secured to said oil receiving means formed to engage said support between said guides,'the said 011 receiver having a vacuum relief aperture therethrough which prevents a vacuum from'being built up in said oil receiver until the said aperture is plugged by the operator of the said oil removal unit.

14. In a power oil removal unit, in combination, a connector mounted .on a motor vehicle, an air suction tube connected to the intake manifold of the engine of the said motor vehicle, an oil suction tube communicating with the low point of the crankcase of the said engine, the unconnected ends of the .said suction tubes being mounted on the said connector, an air valve normally "closing the unconnected end of the said air suction tube, and an oil receiver adapted to be removably fixed in hermetically sealed relationship over the said unconnected ends of the said suction tubes and hold the said air valve open whereby to apply suction from the air suction tube to the oil suction tube which remove oil from the crankcase of the said engine into the said oil receiver, the said oil receiver having a vacuum relief aperture therethrough which prevents a 'vacuum from being built up in said oil receiver until the said aperture is plugged by the operator of the said oil removal unit.

15. In combination with a motor vehicle, a connector mounted on said motor vehicle, an air suction tube connected to the intake manifold of the engine of the said motor vehicle, an oil suction tube communicating with the low point of the crankcase of the said engine, the unconnected. ends of the said suction tubes being mounted on the said connector, a support for coupling means on said connector, a sealing ring on said connector, an oil receiver, an air suction hose and an oil suction hose hermetically connected at one end to the up r end of said oil receiver, and a coupling means on the free ends of said air and oil suction hoses adapted to be suspended from said connector and couple the said air and oil suction hoses to said connector in hermetically sealed relationship against said sealing ring and the unconnected end of said oil suction tube whereby suction is applied from the air suction tube to the oil suction tube whereupon oil is removed from the crankcase of the said engine into the said oil receiver.

16. In combination with a motor vehicle, a connector mounted on said motor vehicle, an air suction tube connected to the intake manifold of the engine of the said motor vehicle, an oil suction tube communicating with the low point of the crankcase of the said engine, the unconnected ends of the said suction tubes being mounted on the said connector, an air valve normally closing the. unconnected end of said air suction tube, a support for coupling means on said connector, a sealing ring on said connector, an oil receiver, an air suction hose and an oil suction hose hermetically connected at one end to the upper end of said oil receiver, and a coupling means on the free ends of said air and oil suction hoses adapted to be suspended from said connector and simultaneously open said air valve and couple the said air and oil suction hoses to said connector in hermetically sealed relationship against the said sealing ring and the unconnected end of said oil suction tube whereby suction is applied from the air suction tube to the oil suction tube whereupon oil is removed from the crankcase of the said engine into the said oil receiver.

17. In combination with a motor vehicle, a connector mounted on said motor vehicle, an air suction tube connected to the intake manifold of the engine of the said motor vehicle, an oil suction tube communicating with the low point of the crankcase of the said engine, the unconnected ends of the said suction tubes being mounted on the said connector, 9. support for coupling means on said connector, a sealing ring on said connector, an oil receiver, an air suction hose connected at one end to the upper end of said oil receiver, an oil suction hose having its outside diameter smaller than the inside diameter 01' said air suction hose telescoped therein and extending into said 011 receiver, and a coupling means on the free ends of said air and oil suction hoses adapted to be suspended from said connector and couple the said air and oil suction hoses to said connector in hermetically sealed relationship against said sealing ring and the unconnected end of said 011 suction tube whereby suction is applied from the air suction tube to the oil suction tube whereupon oil is removed from the crankcase of the said engine into the said oil receiver,

18. A power oil removal unit, in combination, a connector mounted on a motor vehicle, an air suction tube connected to the intake manifold of the engine of the said motor vehicle, an oil suction tube communicating with the low point of the crankcase of the said engine, the unconnected ends of the said suction tubes being mounted on the said connector, an. air valve normally closing the unconnected end of said air suction tube, a support for coupling means on said connector, a sealing ring on said connector, an oil receiver, an air suction hose connected at one end to the upper end of said oil receiver, an oil suction hose having its outside diameter smaller than the inside diameter of said air suction hose telescoped therein and extending into said oil receiver, and a coupling means on the free ends of said air and oil suction hoses adapted to be suspended from said connector and simultaneously open said air valve and couple the said air and oil suction hoses to said connector in hermetically sealed relationship against said sealing ring and the unconnected end of said oil suction tube whereby suction is applied from the air suction tube to the oil suction tube whereupon oil is removed from the crankcase of the said en gine into the said oil receiver.

19. A power oil removal unit, in combination, a connector mounted on a motor vehicle, an air suction tube connected to the intake mani fold of the engine of the saidmotor vehicle, an

amaa'ra oil suction tube communicating with the low point of the crankcase of the said engine, the unconnected ends of the said suction tubes being mounted on the said connector, an air valve normally closing the unconnected end of said air suction tube, a support for coupling means on said connector, a sealing ring on said connector, an oil receiver, an air suction hose connected at one end to the upper end of said oil receiver, an oil suction hose having its outside diameter smaller than the inside diameter of said air suction hose telescoped therein and extending into said oil receiver, and a coupling means on the free'ends of said air and oil suction hoses adapted to be suspended from said connector and simultaneously open said air valve and couple the said air and oil suction hoses to said connector in hermetically sealed relationship against said sealing ring and the unconnected end of the said oil suction tube whereby suction is applied from the air suction tube to the oil suction tube whereupon oil is removed from the crankcase of the said engine into the said oil receiver, the said coupling means and support therefor being adapted to compensate for resiliency and wear of the said sealing ring.

20. A power oil removal unit, in combination, a connector mounted on a motor vehicle, an air suction tube connected to the intake manifold of the engine of the said motor vehicle, an oil suction tube communicating with the low point of the crankcase of the said engine, the unconnected ends of the said suction tubes being mounted on the said connector, an air valve normally closing the unconnected end of said air suction tube, a support for coupling means on said connector, a sealing ring on said connector, a sentinel type oil receiver, an air suction hose connected at one end to the upper end of said oil receiver, an oil suction hose having its outside diameter smaller than the inside diameter of said air suction hose telescoped therein and extending into said oil receiver, and a coupling means on the free ends of said air and oil suction hoses adapted to be suspended irom said connector and simultaneously open said air valve and couple the said air and oil suction hoses to said connector in hermetically sealed relationship against said sealing ring and the unconnected end of the said oil suction tube whereby suction is applied from the air suction tube to the oil suction tube whereupon oil is removed from the crankcase of the said engine into the said oil receiver, the said coupling means and support therefor being adapted to compensate for resiliency and wear of the said sealing ring,

EDWARD L. WOOD.

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