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Publication numberUS1748744 A
Publication typeGrant
Publication dateFeb 25, 1930
Filing dateMay 6, 1926
Priority dateMay 6, 1926
Publication numberUS 1748744 A, US 1748744A, US-A-1748744, US1748744 A, US1748744A
InventorsHarry T Woolson
Original AssigneeChrysler Corp
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Oil pump
US 1748744 A
Abstract  available in
Images(1)
Previous page
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Claims  available in
Description  (OCR text may contain errors)

Feb. 25, 1930. WOOLSON 1,748,744

OIL PUMP Fibed May 6, 1926 numeral. :5, 1930 UNITED s'rATEs PATENT OFFICE HARRY I. WOOIJSOH, F DETROIT, MICHIGAN, ASSIGNOB TO QHBYSLER OOBPOBATION,

OF EEGHLAND PARK, MICHIGAN, A GORPORA'IIQN OF DELAWARE OIL rm Application fled May 6,

It is the primary object of my invention to construct a cheap and economical oil pump for use in an automobile to pump oil and simultaneously draw air from a vacuum tank during certain points of the cycle of rotation of the pump.

Another object of my invention is to pump oil and draw air into a chamber, keeping the air entry segregated from the oil inlet and outlet of the chamber.

' A further, object of my invention is to create enough air suction in an oil pump having a short oil'conduit from the oil source to satisfactorily operate a vacuum tank.

With the above and other objects in view, my invention consists in the arrangement, combination and construction of the various parts of my improved device as described in the specification, claimed in my claims and 20 shownin the accompanying drawing, in

which:

Fig. 1 is a side elevation of my improved device shown partly insection.

Fig. 2 is a plan view of my improved device 26 shown partly in section.

Fig. 3 is a sectional view of my device taken on line 3-3 of Fig. 1.

I have shown a housin 10 having a flanged bottom edge 11 to which is secured by bolts 12 a0 a cover late 13 formin with thehousin 10 a chain r 14. Exten g u from an integral with the top 15 of the ousing 10 is a tubular casing 16 having the aperture. 17 therein terminating at one end into the chamber 14 and at the other end into a reduced aperture 18 formed by a shoulder 19 on the to of the casing 16.

laced in an eccentric position for rotation in the chamber 14 is a head 20 of a pump member, said head having a portion of its circumference touching as at int 21 the inner wall of the housing 10. A shaft 22 projects up from the center of the head 20 into the aperture 17 and integral with the shaft 22 is a stem 23 positioned in the aperture 18. A spiral groove 24 is cut into the shaft 22 to permit oil to lubricate the same during rotation.

A slot 25 divides the head 20 into two equal parts and 'tioned for reciprocation in the 50 slot are the block members 26 and 27 that have improved their outer ends chamfered as at 28. Coiled springs 29, hold the blocks 26 and 27 yieldingly against the wall of the chamber. Grooves 30 are cut into the top of the head 20 adjacent the chamfered sides 28 of the blocks 26 and 27.

An oil intake passage 31 having an opening 32 in the chamber 14 and an oil outlet passage 33 having an opening 34 into the chamber 14 are integral parts of the housing 10. A drain plug 35 is placed in the-end of the passage 31 and also threaded into this assage intermediate its ends is a pipe 36 a apted to convey oil from a conventional source of oil su ply such as the crank case of an automo 1le. The outlet passage 33 may be suitably connected to' the various pomts in an internal combustion engine where oil is used.

Formed in the cover plate 13 is a conduit 37 with the opening 38 leading therefrom into the chamber 14 and positioned between the openingsv 32 and 34. Connected with this conduit 37 is an intake line 39 adapted to draw air from a conventional type vacuum tank, not shown. In the practical operation of my improved device the head 20 is rotated clockwise in the chamber 14 by the shaft 22, stem 23 and a source of rotative power, not shown, connected with a flange 40 on the end of the stem 23. The rotation of. the head 22 simultaneously draws air and oil into different portions of the chamber 14 that are segregated by the blocks 26 and 27 and-the point 21 where the head 20 touchesthe wall of the housing 10. i

The air is drawn from the conventional vacuum tank into the chamber 14 in back of p the blocks 26 and 27 after the same have passed the outlet opening 34 and one. of the grooves 30 is an open connection with the opening 38 of the conduit 37 in the cover plate 13. At the same time oil is drawn into the chamber in back of the blocks 26 and 27 after they have passed'the inlet. opening 32. This until the same pass the inlet 32 at which point oil is admitted. Thus the amount of air drawn into the pum can be determined so that thesame is suflicient to set up a suction in the vacum tank to draw the proper amount of gasoline for consumption in the I automobile.

at two periods during a complete cycle of the pump. The entry oi the air is entirely independent and segregated from the pumping ofv oil into and out of the chamber 14.

It will be obvious that various changes may be made in the arrangement, combination and constructionof the various parts of my improved device without departing from the spirit of my invention and itis my intention to cover by my claims such changes as may be reasonably included within the scope thereof.

What I claim is:

1. A device of the class described, comprising a housing, a cover plate secured to the bottom of said housing forming a chamber therewith, an inlet and an outlet passage for said chamber integral with said housing, a conduit integral with said 'cover and having an opening into said chamber, and means adapted to simultaneously draw oil into and out of a portion of said chamber through said passages and intermittently draw air into the remaining part of said chamber through said conduit in the cover.

2. A device of the class described comprising a housing, a cover plate secured to said housing forming a chamber therewith, an

inlet and an outlet passage'into and from said chamber and integral with said housing, a conduit integral with said cover plate and having a slotted opening into said chamber, a ump member having a slot in the center t ereof placed in eccentric position in said chamber, block members having chamfered outer ends positioned for reciprocation in said slot, meanspositioned between said blocks forcing the chamfered ends to bear yieldingly against the wall of said housing, a groove in the ,top of said head adja-v cent each of said blocks, and means rotating said pump member to simultaneously draw oil into and force it out of a portion of said chamber through said passages and to draw air into the remainder of the chamber through said slotted opening in the cover and the grooves in said pump member.

3. A device of the class, described comprising, a housing having a chamber therein, two segregated inlets and a segregated outlet adapted for communication with said chamber, rotating means intermittently drawing air into a portion of said chamber to create a vacuum and continuously drawing oil into another portion of said chamber.

4. A device of the class described comprising, a housing having a chamber therein, means for progressingly increasing the area of a portion of said chamber and progressingly decreasing the area of another portion of said chamber,.an inlet passage communicating with said increasing portion for a predetermined interval, another inlet passage communicating with said increasin portion after the 'communicationof said st inlet passage and an outlet passage communicating with said decreasing portion.

5. A device of the class'described com prising a housing, a cover platesecured to the bottom of said housing formin a cylindrical chamber therewith, spaced mlet and outlet passages in the cylindrical wall of said chamber, an eccentric rotor within said chamber, reciprocating vanes carried by said rotor, the outer ends of which engage the cylindrical wall, a slotted inlet passage in the end of said chamber, and a passage in said rotor adapted to form an intermittent communication between said slotted passage and the space between the cylindrical wall and the rotor.

6. A device of the class described comprising a housing having a chamber therein, two segregated inlets and a segregated outlet adapted for communication with said chamber, an eccentric rotary member within said chamber, reciprocating vanes carried by said housing forming a pair of chambers between the wall of said chamber and said rotary member, and a passage carried by saidtrically disposed in a pum body, an outlet for said pump, an oil inlet or said pump, an

air inlet for said pump, one of said inletsbeing closed by an end surface of said rotor, and a channel in said rotor connecting said iio inlet with said pump during a part of the intake cycle of said pump. I

8. In an oil pump for an internal combustion engine, the combination of a rotor eccentrically disposed in a pump body, anoutlet for said pump, an oil inlet for said pump, an air inlet for said pump adapted to be. closed by an end surface of said rotor, and a channel in said rotor connecting'said air inlet with said pump during a part of the intake cycle of said pump. 1

9. In an oil pump for an internal combustion engine, the combination of a rotor eccentrically disposed in a pump body, an outlet for said pump, an oil inlet for said pump, an air inlet terminatin in a crescent shaped slot in said pump b0 and adapted to be covered and uncovered by one of the end I a V j faces of said rotor, and a channel in said rotor outlet for said 'a part of t connectinasaid slot with said ump during e intake cycle of sai pump.

10. In an oil pump for an internal combustion engine, the combination of a rotor eccentrically disposed in a pump body, an gun 1p, an oil inlet terminating insaid pump ody in the form of an elongated slot, an air inlet adapted to be covered and uncovered by one of the end faces of said rotor, and a channel in said rotor connecting said air intake with said pump dur ing' a part of the intake cfi cle of said gump.

- HARRY WOOLS N.

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2580278 *Mar 28, 1944Dec 25, 1951Joseph B BrennanPump
US3936246 *Jun 28, 1974Feb 3, 1976Chromalloy American CorporationMixing pump and method of mixing using same
Classifications
U.S. Classification418/15, 418/258
International ClassificationF04C2/344
Cooperative ClassificationF04C2/344
European ClassificationF04C2/344