US1295091A - Connecting-rod for piston engines or machines. - Google Patents

Description

A. ISLIKER.

CONNECTING ROD FOR PISTON ENGINES 0R MACHINES.

APPLICATION FILED AUGJ. I9I8.

Patented Feb. 18, 1919.

2 SHEETS-SHEET I- A. ISLIKER.

comwecnms ROD FOR mum ENGINES on MACHINES.

v APPUCATIQN FILED AUG. 7 1918' 1,295,091 Patented Feb. 18, 1919.

2 SHEETS-SHEET 2.

xi xg x x1 x6 ALBERT ISIIIKER OF GENEVA, SWITZERLAND, ASSIGNOR OF ONE-HALF TO THE FIRM OF MOTOSACOGHE SOCIETE AN ONYME, OF GENEVA, SWITZERLAND.

CONNECTING-ROD FOR PISTON ENGINES 0R MACHINES.

To all whom it may concern:

Be it known that I, ALBERT ISLIKER, engineer, a citizen of Switzerland, residing at Geneva, Canton of Geneva, in the Confederation of Switzerland, have invented certain new and useful Improvements in and Relating to Connecting-Rods for Piston Engines or Machines, of which the following is a specification.

The present invention relates to the lubrication of connecting-rod heads and crank pins of piston engines or other machines.

In carrying out my invention the bushing in the head of the rod is provided on both sides of the middle transverse plane with collecting devices for the lubricant after having served its purpose, said devices being in communication with other devices wherefrom the lubricant is discharged in a predetermined direction and in a predetermined position because of the forces imparted to it by the movement of the head.

In the drawing: p

Figures 1 and 2 are partial sections of one form of the invention, one section being taken parallel to theengine shaft, and the other at right anglesv thereto.

Fig. 3 is a diagrammatic section illustrating the operation of this form of the .invention.

Fig. 4 is a partial section of another form of theinvention.

Fig. 5 is a partial section showing. a modification of the formillustrated in Fig. 4.

Figs. 6 and 7 are partialsections of still other forms of the invention, and

V Fig. 8 is a partial section of a modification of the form shown in Fig. 7.

As shown in Figs. 1 and 2, the connectingrod 00 is part of an internal combustion engine having one or more cylinders. In this structure the crank pit g incloses the tight chambers b which constitute the pump chambers where the explosive mixture for driving the-engine is compressed by the corresponding piston which is connected by the rod :10 to one of the crank-pins e of the crank-shaft e. The explosive mixture is admitted to a chamber 7) throughits port 9. Now under these circumstances if the head of the connecting-rod m is suificiently lubricated, the oil after having accomplished its lubrication will work to the outside of this head m and will be thrown in all directions, owing to the moving crank-pin 6 if nothing Specification of Letters Patent.

Patented Feb. 18, 1919.

, Application filed August 7, 1918. Serial No. 248,725.

is provided to prevent such action. The oil will therefore be thrown toward port 9 and when the compressed explosive mixture is conveyed through the port 9 tothe cylinder it will carry with it a certain quantity of the oil.

To prevent this oil waste, a bushing m is placed in the revolving head of connectingrod 0: and is provided near each of its extremities with an inner annular groove 00 00 The groove m is shown as located, in a plane at right angles to the longitudinal axis of the bushing, and the groove w in a plane at an inclination thereto. In the latter case there is less risk of marking the crank-pin, owing to the wear at the same place. Each of these grooves communicates through an orifice with a radially set pipe m which is fixed at an acute angle to the axis of the connecting rod w and terminates on the outside of the head 00 in the under part of which said pipe 02 is secured.

The operation of this form of the invention may be explained by reference to Fig. 3, which is a section taken vertically on the axis of the crank pin 6 and passing through the groove w the dimensions of groove and oil being greatly exaggerated.

The oil is supplied to the head 09 of the connecting-rod m in any suitable manner and after having lubricated the same, is collected in the grooves 00 m Owing to the movement of the head :0 the oil in the grooves is acted upon by two forces. The one, a centrifugal force causes the oil in the grooves m and x during the revolution of shaft 2, to always take a position which is opposite that of shaft 0 with regard to the axis of the crank-pin 6 This is shown in Fig. 3 for the four positions I, II, III, IV of the crankpin.

The second force is inertia which acts materially in extreme positions of the piston, that is in the positions I and III of the crank-pin in Fig. 3. As the crank-pin approaches these two positions, Iand III, its movement is retarded both upwards and downwards, until it ceases to move in a vertical direction, and then starts again downward or upward with a marked throw which the oil owing to the inertia can not follow at once. From the action of these two forces and from the position in which the pipe {.86 is fixed, it will follow that the oil can escape from the grooves m :2 only in the position III of the head, that is in a pie determined direction and position so that the oil can not get near the orificeof port 9 Thus the quantity of oil carried along by the explosive mixture is so very small as to be negligible. At the time the oil escapes the gases in the crank case Will be nearly at rest,

which still further diminishes the risk of n iF g -l t e nm a i rew-e a e Pl ce in the; "facerends of the bushing a are. open toward said faces, and are inclined With re-v gard .to. said faces, in suchqa Way that the ba a fl a erer t's e tc d tance from, the, axis of the bushlng than its opening. Thesetgljpoyes jare likewise provided with escape pipes like the, pipesg'si .As in Fig. ,5, the. devices, communieating. with ,the oil 1 collecting igrooves are pointed tongues, 00?, made, on theQoutside ofhead and .sojformed as. to cause the collectedpil tov be projected ina predetermined; direction at the yery moment of. the throw; ,of the crank occurring during the. .re-. turn stroke ofthe, iston The bushing may beproyided with theseprojecting tongues instead of making ,them on the head itself.

e ferrling tofigb,it;,wi1l be seen that the ehgets its lubricating ,Oilfnom a tcollect ng gutter, ,10 surroundin g the bearing 11 of-gthe shaft e by means of a chan nelhet Atj eaeh endof the bushing w tlie crank pin Q6 I has, an annular projection 6 on which the oil, is. collected after, having accomplished its. lubricating action, and

from which it fiows by the effect of centrifr 7 ugal gtoroe into an, inner. annular groove m? onithe bushing The grooye's whcommuni: cate ,Withthe pipesm, The ollmay also beforced under, pressure to the ,vl crank-ipin through, a .canal 1 (Fig. 6) made in the crank an,d ,fed;fr,om.a groove 'the i side Of e ush s n he-bearins 12 Ivor the shaft 0. This delivery of the oil by pressure aduanta geous especially if the oil, is used to,lubric,ateand alsoto cool the bushings of the crank and the bushing,m ead In ,anothenfor n ofthe invention asshown in F'g. 'the grooves (00? areplaced in the wi'at the corners here the crank: pine? is roundedoli so' asto join the arms of vthe citank. 'Eachwf these grooyes .02 is fitted with -its- O n- -pipe wt; Fig. 8 shOWS medieee pefltt isfa m 9f he i t t e t Tt g eu cqmmunicateyiith each other by}. nea is iota channel a??? made Within the outer surface. of thebusliing Wand by means of said ,pliiiiuiielgwith the, pipe as. The walls ,ofthe, crank caseg may be arra ged,- q asta-scllast to e ate h {-011 which escapes from the projections or pipes on the head of the connecting-rod;

While I "-havedescribed my i invention as particularly applicable to an internal combustion engine it illbe readily understood that it-is not limited-to such use, and furthermore the escape pipes for the oil may be placed at substantially 90 from the, po- .sitions shownand described so as to utilize the action of' the centrifugal force only instead of both forces asdescribed without de parting vfrom the nature and of the invention," 1 V I claim asmy invention:

.1. I An apparatus jofithe, jclass described, mp i ing asm sh t, cq' n q nglrq l, a vbushing in the head ofthe connecting rod surrounding a crank pin ,on the crankshaft, the said bushing beingaada pted'to collect the spent, lubricatingbil lsupplied Ibettyeen' -the samef and the prank pin gand an. outlet e01}: nection so placed iniits, relationship tothe bushing andpranklpin as. to discharge the collected lubricating 011, t e predetermi ed pointin the reyolution of the crank shaft;

2. An apparatu of, ,the pag described, comprising a k a t a xmeti i i i b h nsi t e ad o e m dies e surroundinga cranlnpin on the rank shaft and haying .a grooye therein adapted to s e pe t l ri tin -o su pliedte he bushing and crank ,pin, ,and an outlet ot nection so placed and fixedlinLits relationship I to the, saidIbushing a agram: ping as to discharge.thelubricating 1 oil, collected in the said grooye at a predetermined, position and in a predeterminedidirection the hero: lutionipf thelcrankhshaftl n wreath 1 f h a s m es ihed, comprising a crank-shaft, a connecting-rod, t i hineinz he hea o t 1 fi t eI-r surrounding the. crank pinbn,the cr ek ha t, d h s nee st wisep e t nst lubricating voil, ,andan outlet connection for I r in s h lltbti etie l ll i (3 P termined directien and at,';a predetermined po ini h e e ut on o th r n -shu An p ara us the class ade er' b s comprising a erank-shaft,; a connectingerod, a bushing in the head of the connecting-rod surrounding .',the crank pin, one-the ,Qcra nk shaft, and having a groovefor colleetingthe b c n da r p ste di g threl eh the head ,of the connecting rod and Qmmus a ns w th. the ;'1'QOY6 n the u h ng s as tox i charge th o ed ub eetins il in a predetermined direction and at a predetermined point in the zrevolutionaof ,the crank shaftp p I 1 An apparatu .91- h c a desc bed,

a bushing in the head vof the connecting-rod surroundlng a crank q in the .cr shaft and. having a circumferential groove e Hwting thel briwti io z a d a ripe compr sing a'cm khaft a cementing-1 rd,

fixed in the head of the connecting-rod in In testimony whereof I have aflixed my a radial position and at an angle to thfI signature in presence of two witnesses. axis of the rod and communicating Wit 7 the said groove in the bushing so as to dis- ALBERT ISLIKER' 5 charge the lubricating oil in a predetermined Witnesses:

direction and at a predetermined point in LOUIS W. MUNIoY, the revolution of the crank-shaft. JEAN SCHEIBENSTORY.

copies of this patent may be obtained for in cents each, by addressing the commmioner of I'atents, wmnhlngton, D. 0."

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