US RE15832 E
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Reiaaued May 6, 192,4.
UNITED STATES PATENT OFFICE.
WILLIAM A. EDWARDS, F CHICAGO, ILLINOIS, ASSIGNOR, BY DIRECT yAND MESNE lAS- SIGNHENTS, T0 THE TUBULAR COIBIORATION,v OF CHICAGO, ILLINOIS, A CORPORA- TION OF DELAWARE.
Original No. 1,360,883, dated November 30, 1920, Serial lo/$02,198, led June 6, 1919.. Application for reissue led October l, 1921. Serial No. 504,772.
To all whom it may concern.-
Be it known that I, WILLIAM A. EDwAnDs, a citizen of the United States, residing at Chicago, in the county of Cook and Statel heavier particles of the lubricating oil which is fed in with the gasolene, condense andA collect in the bottom of the crank case, and
feed intermittently in slugs through the passage leading `from the crank case into the cy inder, which would result. in imperfect explosion and cause uneven running of the en `ne.
ne of the primary objects of this invention is the provision of means for va- 2B porizing the li uids which1 accumulate in the bottom of t e crank case so that they will be fed in the form of va r to the engine cylinder instead of in ric liquid slugs, and thereby the imperfect intermittent explosions are eliminated and a smooth, eilicient and rhythmic operation of the engine is secured. v
Another object of my invention is to further break up and vaporize the explosive mixture in its travel Ibetween the crank case and the engine cylinder so as to thereby increase the efliciency'of the engine.
Still another object is the provision of novel means for supplying oil to the wrist quate lubrication of this wrist pin during operation. My invention and many of its inherent advantages will be readily appreciated by those skilled in the art by reference to the following description when considered in connection with the accompanyin drawings.
eferring to the drawings,-
Fig. 1 is a vertical sectional view, through one cylinder of a two cycle engine embodying my invention; and
pin of the engine crank so as to insure ade-v spark plug, is secured in' position by the usual studs or stay bolts 7 The crank case, designated generally by reference character 9, is of the closed type and 4communicates with the lower end of the cylinder, the crank case, and cylinder being shortly cou led but permitting sufficient clearance `for t e voperation lof the connectingV link or piston rod. W'ithin the cylinder the piston 11 is adapted to be reciprocated by means of the connecting rod 12, which is equipped vat its lower end with a wrist pin 13 fitted into the fly wheel 14 mounted upon the engine shaft 15. For the purpose of insuring a supply of lubricant to the wrist pin, the outer face of the fly wheel is provided with a recess v16 increasing in de th from the center toward the perimeter o the wheel, the circumferential walls of the recess being undercutLas indicated at 17, and adjacent the wrist p-in, the recess communicates with the wrist pin bearing through a duct 18. lVhen the engine is in operation, oil from the crank oase will be thrown by centrifugal force to the periphery of the recess 16 and forced through the duct 18 to the wrist pin bearing, thereby insuring adequate lubrication of this bearing.
The explosive mixture is supplied from a carbureter 10 to the crank case throu h a port 19 located in the'lower portion o the cylinder so that it will be fully opened to admit gas to the crank case when the piston is in its uppermost position, and will be entirely closed by the piston when the piston has moved downwardly a portion of its,
The partial vacuum created in the stroke. crank case by the piston on its upward stroke causes the explosive mixture. to rush inwardly through the port 19 as soon as the pistonclears the port in its upward "travel, and upon downward movement of the pislectin cha ton, this" mixture, trapped in the crank case hyfclosure'of the port 19, will be compressed yby the] lston in the usual manner.
tom yof the crank case is provided with-fapassage 21 which is inclined downwardly; to its junction with thev vertical pas- .-openingthrough the intake port 23 efcylinder. The condensed gasolene,
ltel'ldency "tof-accumulate in the crank case, this passa e 21 to the lowe'l'end there() where it wi l tend to accamalafe-whilefthe lighter gah win aow dithe passage 21 into the passage .-andv'thence into the cylinder. The lower the liquids above men- Vlend ofthe pav 21 thus serves as a colf through. whicafair,
tione For the purposeof breaking up the particles of gasolene. 'inthe mixture and fur- Hther .vaporizn'g the mixture during its pas v'sage from the crank to the cylinder, I
' l havev xneaintedl ,in''th'e I*passage 22aVenturi tube 24. 'f 'TLheiction of this tube-u n the :mixtur'eillowing therethrough fart er vathe'xixture so` thatit is deliveredijo thelciylinderwitli `particles''thoror'thezpurposejo'fcaas' j mischiare.
,broken u "an y p' essary, and yncarits lower end itjisi provided .with a'. plurality. of portal or opex'iingsl 27 y x and the liquid accumulation attlis' point may enter the tube i f and be dnzw'n. bythe vacuum created. in the f throat of' lieiventuri upwardly through the tubeanddelivered into the venturi' where these lliquid particles are thoroughly. broken up and vaporized by the action ofthe venturi. In order to protect the openings 27 against clogging, I prefer to surround the lowerend of the tube 25 with a screen 28, as shown in Fig. 1-
During the operation of the engine the mixture 'from the crank case will llow under pressure when'the port 23 is open, through the Venturitube and the suction exerted by the tube 25 will cause some of the mixture to ease tending toaccumu flow through this tube. All oil, condensed gasolene, and other liquids from the crank ate in the passage 21 will be drawn into the tube 25 through Vthe ports 27 and will be delivered by this tube into the throat ofl the venturi where they will be thorough] broken up, dissipated and mixed with't e explosive charge 'the lower end fgo'ffpthecpassa'gef21 to the. ^cylinder in'lnlly.fvaporiaedzfcondition, 'I
' have mounted'ifin tlieg'f-lower ofthe as sage 21a vertical tube 25;"tliezupper en of' .1n .saidpassagmy massa -so that an even feeding to the cylinder will result and 'no liquid slugs will be delivered to the cylinder which would impair the even and rhythmic operation of the en ine. The burnt gases in the cylinder are ischarged therefrom through tie exhaust port 29 by the force of the incoming charge in a manner which is well understood.
It is believed that my invention and many of its inherent advantages will be understood from the foregoin without further description, but it shoul be obvious that various changes in the structural details disclosed may be resorted to without de arting from the spirit of the invention as d ned in the following claims.
1. A two cycle engine, comprising a cylinder, a closed crank case, a passage leading from the bottom of said crank case to sai cylinder, and vaporizing means disposed in said passage.
2. A two cycle engine, comprising a cylinder, a closed crank case, a passage connecting said cylinder with said crank case, and means for vaporizing the liquid tending to accumulate in said crank case.
3. A two cycle engine, comprising a cylinder, a crank ca means for vaporizing' the H gasQlgncN-f'hquid tending tofaccumulate in said crank lubricating oil'i'which;tendtfcumlilw` .flz'ed'fllquld to said cylinder.
4. A two cycle engine, comprising a cylinder, a crank case,l a passage connecting said cylinder and crank case, a venturi disposed and means for delivering liquids `froms'aid crank case into the throat of said venturi.
,15. A two cycle engine, comprising a cylinder, a crank case, a 4'passage connecting said `cylinder'and' crank case, a venturi disposed in said passage, anda tube communicating with the throat of said venturi and with the point of accumulation of liquids from said crank case.
l6. The combination with an internal combustion engine comprising a cylinder, an
intake port adapted to receive the fuel mixture from the carburetor connected to said intake port, and a passage extending from the intake port to the cylinder through which the fuel mixture passes from the carburetor to the cylinder, said assagehaving a portion where condensate t erein accumulates; of a venturl dlsposed lnfsaid passage,
frase,- and means -forlde'livering said vaporand a delivery duct communicating with said venturi and with the point of accumulation of condensate in said passage whereby the condensate is drawn through the duct by the vacuum in the venturi and said condensate thoroughly broken up and atomized by the action of the venturi.
7. In a reatomizer, the combination of a fitting adapted to be inserted in a mixture passage to form a part of said passage and comprising a restriction, a. collector having comprising a restriction, a collector having an o ening adapted to intercept in ing an o ning adapted to intercept in oing v liqui and a. connection from the colector kliqui and a connection from the colector 10 to the passage at the restriction. to the passage at the restriction, the dis- 6 8. In a reatomizer, the combination of charge of the connection being remote from a fitting adapted to be inserted in a mixture the wall of the passage. A passage to form a part of said passage and WILLI M A. EDWARDS.