US1825318A

US1825318A - Pump

Info

Publication number: US1825318A
Application number: US664513A
Authority: US
Inventors: Leonard B Kapp
Original assignee: Fairbanks Morse and Co
Current assignee: Fairbanks Morse and Co
Priority date: 1923-09-24
Filing date: 1923-09-24
Publication date: 1931-09-29
Anticipated expiration: 1948-09-29

Description

Sept. 29, 1931. L B. KAPP 1,825,318

PUMP

Filed sept.v 24, 1925 2 sheets-sheet 1 INVENTOR Ea/WR@ B. /mPP w99; www

TTORNY L. B. KAPP Sept. 29, 1931.

PUMP

Filed Sept. 24, 1925 2 Sheets-Sheet 2 Patented Sept. 29, 1931 UNITED STATES 'PATENT OFFICE LEONARD B. KAPP, F BELOIT, WISCONSIN, .ASSIGNOR T0 FAIRBANKS, MORSE & CO.,

OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS PUMP Application led September 24, 1923. Serial No. 664,513.

My invention relates to improvements in pumps.

TheV object of my invention is to Vprovide pumping means utilizing the periodically varying pressure existing in the crank case `compartments of an internal combustion engine employing crank case compression.

Though `my invention consists largely 1n thel construction and arrangement of parts hereinafter described .and particularly pointed out in the claims, yet I do not limit my invention to the precise form, construction or arrangement of parts shown or the several parts thereof, inasmuch as various alterations may be made without departing from the scope of my invention.

In the drawings Fig. 1 is a fragmentary sectional view of an engine employing one form of my invention for the purpose of `pumping oil from the crank-case thereof; Fig. 2 is a fragmentary sectional view of a modified form of my invention utilized for the same purpose as that in Fig. 1; Fig. 3 is a fragmentary sectional view of another modification of my i invention which may Ibe utilized for any pumping urposes.

Referring bynumerals to t e drawings, in Fig. 1 the cylinder` 2, piston 3 and con- Y necting rod 4 of an internal combustion engine of thetwo-cycle type maybe of any suitable form, and the engine provided with a crank-case, the wall of which is shown at 5, and is furtherprovidedwith the crank shaft 6vand crank 7 The crank shaft is carried by a bearing 8, which may be of VThis collar, or air-stop ring, preferably turns with the crankshaft and is attached thereto Vby means of lugs, 10, passing over i the cheeks of the crank 7, and preferably held by means'of dowels, 11. Springs, 12, serve to push the air-stop ring 9,- against the inner surface of the crank case, 5, which is preferably ground to form a bearing surface for the ring. An oil Voutlet for the crank case is shown at 13, connected by means of a suitable conduit, 14, to an opening, 15, covered by the air-stop ring, 9. A

l with opening 16, upon each revolution of the times by means of a short groove or channel, 18, which is preferably fcut in the bear ling surface of the air-stop ring. By regulatingthe size and position of this .channel or groove 18, the openings, 15 and 16, may be placed in communication for any length of timeV and at any periodical time desired. By regulating this communication period to some time when the pressure in the crank case is greater than that in the outlet 17,

oil` will bc forced from the crank case through the conduit 14,' opening 15, chan- 70 nel 18, opening 16 into the outlet conduit 17 Vthus providing an effective means for pumping lubricating oil outof the crank case.

In Fig. 2 the air-stop ring 9, is preferably made larger in circumference so that its lower edge will come below the oil level in the crank case. The channel 18, in the airstop ring is then preferably Vmade to eX- tend through the ring and registers periodically vdirectly with the opening 13, inthe crank case. Conduit 17 serves as the outlet for this opening. If the position of the channel 18, through the air-stop ring, 9, is such that it registers with opening 13, when the crankcase pressure is greater than that in the outlet 17, then oil will be forced through the channel 18, opening 13, and into the outlet 17.

In Fig. 3 the air-stop ring is shown at 9. The channel 18, is made to pass through the ring andin addition there is an opening or channel 19, preferably corresponding to the channel 18, but placed opposite to it. These openings, evidently, alternately coincide crank shaft 6. Outlet conduit 17 from opening 16, is connected to a pulsation chamber, 20, preferably as shown, having an inlet, 21, inlet valve or valves22, ofy any suitable type, an outlet, 23, and outlet valves 24, of any suitable type. Now if channel 18, be so placed that it registers periodically with opening 16, at some time when the crank case pressure is near a maximum, then channel 19, being oppositely disposed vith respect to channel 18, will register periodically with opening 16, at some time when the ciank case pressure will be near a minimum. This will cause an alternate suction and pressure to be applied to the pulsation chamber 20, so that when channel 19, registers Vith opening 1G, Huid will be taken in at inlet 21, through valve 22, and when channel 18, registers with opening 1G, fluid will bc forced out of outlet 23, through valve 24.

Having described my invention what I claim as new and desire to obtain by Letters Patent is:

1. In an oil pump in combination with an engine crank case, a piston, a crank shaft, an air-stop ring consisting of an axiall movable collar rotatable with the cran shaft, a conduit adapted to be placed in periodic communication with the interior of said crank case through the collar, coincidently 'with the innermost position of said piston with respect to the crank case, said conduit and collar being adapted to direct a fluid from the crank case, to a point external to the engine.

2. In an oil pump in combination with an engine crank case, a piston, a crank shaft, an air-stop plate consisting of a collar carried by, and movable eiidwise of the crank shaft, a conduit external thereto, and valve means constituted by said collai foreifecting the periodic communication of said conduit with the interior of said crank case, concurrently with each movement of said piston to a point near its innermost position with respect to the crank case, said conduit and collar being adapted to effect a movement of oil by transfer of the crank case pressure thereto. n

3. In an oil pump in combination with an engine crank case adapted for a varying pressure, a piston, a pressure relief channel, and rotatable means yieldably positioned along the crank shaft and serving the purpose of a closure for the crank case and for placing the channel in communication with the crank case at predetermined crank case pressures, said channel being so situated as to produce a movement of oil at such crank case pressures.

In an oil pump in combination with an engine crank case in which there exists a periodically varying pressure, a piston, a combined air-stop ring and oil valve, yieldingly retained against a portion of said crank case, a conduit outside of said crank case, and arranged to be placed in periodic communication therewith through said ring, responsively to each movement of saidA piston intodisplacing relation toward said crank case, when said crank case pressure is greater than atmospheric.

5. In an oil pump in combination with an engine having a crank case in which there exists a periodically varying pressure, a piston, an oil conduit outside of said crank case, and means rotated by the engin-e for placing said conduit in periodic communication with the crank case, when said crank case pressure is in excess of the pressure in aid oil conduit, said conduit being adapted thereby to effect a movement of oil from the crank case.

6. In an oil pump in combination with an engine having a crank case adapted to hold a varying compression, a piston, a crank shaft, an oil conduit external to said crank case, a valve member attached for rotation with, and yieldably positioned along said crank shaft and closing an aperture in said crank case, said member having an opening therethrough, whereby said oil conduit and aperture register at predetermined intervals, and are adapted to bypass crank case pressure to effect a movement of oil.

7. In an oil pump, an engine crank case adapted to hold a varying compression, a piston, an air-stop plate serving as a closuie for said crank case and arranged to servo as a movable valve member closing a pressure by-pass aperture in said crank case, said member having a plurality of oppositel-y disposed openings, whereby said aperture and openings register at predetermined intervals, and a conduit adapted to connect an oil chamber with said aperture, to utilize crank case pressure for pumping oil external to said crank case.

8. In an oil pump in combination with an engine crank case having an opening for a shaft and shaft bearing, and an oil outlet opening in a wall of the crank case, a piston, a crank shaft projecting through a bearing opening in said crank case, an annular collar attached to said crank shaft and covering each of said openings, said collar having an oil opening therein, a member external to said crank case having a fluid passageway therein adapted to register periodically with the oil opening in the annular collar, whereby crank case pressure is utilized to effect a movement of the oil.

9. In an oil pump in combination with the crank case of an engine employing crank case compression, said crank case having a shaft opening therein, a piston, a crankshaft, an oil drain conduit leading from said crank case, an oil outlet conduit arranged for movement into communication with said drain conduit, and means yieldably positioned along the crankshaft, and forming said outlet conduit, said means constituting a closure for said shaft opening and adapted for placing said conduits in communication at predetermined crank case pressures, and adapted thereby to utilize such pressures to effect a movement of the oil.

l0. In an oil pump in combination with the crank case and crank shaft of an internal combustion engine employing crank casev compression, the crank case having an opening therein adapted to receive the crank shaft, a piston associated with the crank shaft, said crank case having an oil outlet opening therein, an air-stop plate for said shaft opening, comprising a rotating collar, having a passage therein, said passage being positioned in angular coincidence with a crank of said crank shaft, said collar sealing said oil outlet opening excepting at predetermined times When said passage registers with said outlet opening, said collar and opening being adapted to by-pass said crank case compression to cause a movement of an oil stream.

LEONARD AB. KAPP.