US1470769A

US1470769A - Oil-circulating system

Info

Publication number: US1470769A
Application number: US419607A
Authority: US
Inventors: Louis E Shaw
Original assignee: WILLIAMS MOTORS Inc
Current assignee: WILLIAMS MOTORS Inc
Priority date: 1920-10-26
Filing date: 1920-10-26
Publication date: 1923-10-16
Anticipated expiration: 1940-10-16

Description

l.. E, SHAW OIL CIRCULATING QJSYSTEM Filed Oct. 26 1920 Patented 6m16.192s.

i UNirx-:u'sTATEs' Fries.

:tours E. sW, or EAsfr onANGE, NEW JERSEY, AssreNon `ro WILLIAMS morons INC., or NEW Yonx, N. Y., A conPonA'rIoN or DELAWARE I OIL-CIRCULATING s Ys'rEu. V

Application mea october eamo. serial Na-119,607.

citizen of the United States', and residing at East Orange, county of Essex, and State of4 New Jersey, have invented certain new and useful Improvements in Oil-Circulating Systems, of which thefollowing is a specilication illustrated in the accompanyin drawings, the particular novel features o the invention being more fully pointed out in the annexed claims.

My invention relates to oil circulating systems, for any kind of machinery in which comparatively small but carefully proportioned quantities of Oil should be supplied at any one time to the point or points of consumption from a storagesupply not located directly adjacent to this point. The diiliculty arisin in such cases of small oil supply is, that t e small quantities of oil required are considerably diminished on their v,comparatively long way to the point ofv "consumption by unavoidable leakages, so f' that an insuilicient amount of oil will eventually reach this point. In many Cases 'it is -.not feasible to counteract such losses by simply increasing the amount of oil de-v livered from the -storage supply, because leakage losses are uncertain quantities, are

hard to determine andarevariable.

In order'to overcome these dilliculties, I

propose tofeed from the storage supply oil 1n bulk, i. e., in quantities, many times in excess of the amount actually required at '35 the point of consumptionand to separate from this excess amount at one or several points, closely adjacent to the point of consumption, quantities df oil, suilicient to cover the exact requirements at that point, where- 40 vby, the excess amount of oil is permitted to escape and to gather'at suitable portions of thef'engine; whence it is returned by suitable means to the storage supply. This method of oilsupply becomes of particular value in case of so-called rotary cylinde'r internal combustion engines, which are usually of very compact construction yand in which it is otherwise dilicult to reach points, requiring lubrication, located lnside of the rotary crank casing.

I have therefore illustrated my invention as applied to that class of machinery without thereby limiting the scope of the use to which my novel construction may be put in other classes of machinery.

In the accompanyin drawings: Fig. 1 is a longitlginal vertical section through a rotary cylinder engine,

Fig. 2 is a detail face view of a portion of the oiling device partly in section on the line l2--2 in Fig. 1,

f 1,410,769@ gPernur `o Fig. 3 is a detail end view of a crank portion, the section a eari therein bein taken on the line in lFgig. 1. g Referring to Fig'. 1, the stationary crankshaft is shown at 1 and the rotary crankcasing, disposed thereon is shown at 2. 3 is one of the cylinders (the others not visible in this sectional view), containing the piston 4, connected to'the crank-pin 6 by connecting md5. The illustration of this type of engine is purely conventional and merely for the purpose of illustrating how my olling system may be applied, for instancefor the purpose of oiling the crankpin 6. 4Crank-casing 2 has a tubular extension 8 at its right hand end, which serves as a bearing on the shaft end 9 for that side of the casing. Extension 8 terminates in an eccentric 12 for the purpose stated below. At 21, is keyed to the end of shaft portion 9 a pump casing 11, which rests with arunning fit, by means of ring 22, on

tubular extension 8 of the crank case, and

which contains the pump cylinder 23 with its two ball check valves, denoted jointly A of pump casing 11. From the check valvesv 14 the oil, pumped from reservoir 10 is delivered into passage 15 provided in casing 11, whence it passes through plug 16 whic closes the outer end of cylindrical boring 18 provided in crank shaft portion 9. Crank arm 25 is provided with a boring 19 which loo connects by means of a tube 17, located in shaft boring 18, with the oil passage through plug 16, s0 that the total amount of 011 delivered by the pump is directlyconducted to oil discharge stud 20 attached to the inner end ocrank arm boring 19.

At the inner periphery of crank casing 2 are provided anumber of lugs 26 (three in t this .case as shown in Fig. 2), `to Awhich lio4 \ but is permitted to escape therefrom through the bottom of chamber 28.

The oil discharged from the latter into thisI rotary chamber tends to collect at the inner periphery thereof, due to centrifugal force,

discharge holes 29, provided in disk 27 near From these discharge holes the oil is splashed into crank case .2, Where it collects at the. point of largest diameter, indicated by a.

Disk 27 in the present example is provided with six oil discharge holes, live of which are denoted with 29 and one with 30 (see Figs. 1 and 2). While holes 29, as previously stated, all disch-arge the oil from ,chamberl 28 directly into crank case 2, hole 30` discharges the oil passing through it linto a vtrap 31 provided on disk 27 and surrounding hole 30, A trap discharge tube 32 is arran ed on disk 27 at fa suita le point, so -that t e oil collecting in trap 32 is discharged therefrom by centrifugal force at the side of disk 27, facing crank pin 6. The oil passage in crank pin 6, thru which a definite amount of oil is to be supplied to the crank pin bearing, is shown at 7. Now in order to deliver some of the oil discharged from tube 32 into'passage `7,I arrange on pin 6a catcher lplate 34, which rises from the crank pin closely .adjacent to `passage 7 and .curves over the circular path in which discharge tube 32 revolves, vand. extends into the tangential plane in which the oil is. discharged from tube 32.l

From the description of my oiling system so far given, it will be noted thatof the total --amount of oil 'delivered by plunger pump 13, 23 into annular chamber 28, livesixths is returnedy unused to crank lcase 2 through the five discharge tubes 29, while the remaining one sixth is delivered through tube 30 into trap 31, whence it is discharged at the left hand side of disk 27 through tube 32. The peripheral extension of .catcher plate 34 is dimensioned so that of the oil discharge from tube 32, say for instance, one tenth splashes against plafte 34, the remaining nine tenths being discharged into casing 2 where it collects at a with the remainder of the oil discharged directly into it as described before. Thus of the total amount of oil delivered by the pump one sixtieth is delivered to catcher plate 34, on which it may run down, as shown by the corrugated arrow, into oil hole 7 to the bearing for which it is intended. p

In order to further control the amount of oil delivered to caltcher plate 34, and thus vtc the bearing, in accordance with the load of the engine, I have provided a. shield 35,.

disposed between the circular path of discharge tube 32 and catcher plate 34. This shield is pivotally arranged on crankvpin 6 by means Iof a small shaft 36 longitudinally extending through the crank pin as shown in Figsfl and 3. When this shaft is rocked through a suitable angle, shield 35 will cover a greater or smaller portion of catcher plate 34 vand thus delect more or less of the oil discharged against plate 34, so that the oil so deflected cannot reach oil hole 7 of the crank pin. The deflected oil may run down on shield 35 into crank case 2 and collect" at a with the rest of the unused oil.

In order to render the deflection of oil from plate 34 dependent upon the engine load, I connect the rocking shaft 36 with the registering with port 42 throughout the en tire angular motion which the tube is permitted to perform. Another port 44 is provided in that portion of the crank shaft nearer the crank arms, which permanently connects with an annularchamber of crank case 2, which completely surrounds the shaft at that point and connects with intake passage 45 leading to the engine cylinder 3. Throttle tube 40 is provided ,adjacent to port 44 with a port 46, which may be brought to register with port 44 moreor" less, according to the angular position of the throttle lever 49, and by these .means the gas supply and thus the speed of the engine may be controlled.

Throttle tube 40 is closed at its inner end by a solid portion 43, which terminates substantially flush with the inner face of the crank arm, but is formed at this end into an eccentric 39 (Figs. 1 and 3) against which rests one end of a pin 38 slidingly disposed in the crank 'arm and protruding at its other end into a recess 51 in the end of crank pin 6. Rocking shaft 36, to which shield 35 is attached as described, also -protrudes into this recess and is provided at its free end with a cross bar 37, which bears against the outer end of pin 38, being held in engagement therewith by a spring 41 shown in Fig. 3.- This spring is arranged at the rocking shaft end near the shield and is not shown in Fig. 1. Thus when the throttle tube is operated to control the engine speed, eccentric 39 rocksv with it and lifts or lowers pin 38, so that by the mechanism just described shield 35 is correspondingly operated to ,cover a greater or smaller portion of catcher plate 34 in accordance with the v,throttle position.

In order to return the unused oil collecting at 'a in the crank case 2, to the storage supply vessel 10, I use the following expe-` dient: To the inner end of the hollow crank with the peripheral extent'of the plate, and adapted t'o lead the oil to the point fof consum tion, and means for collecting the oil disc arged into the crank case and reshaft portion 9 is fastened a curved tube 52,' turning it to said stationary I'SGIVOI".

which rises along theend wall of crank case 2, as shown in Figs. 1 and 2, and is curved against the direction of rotation of case 2 as indicated by the arrow in'F ig. 2. The outer end of tube 52 dips into the oil, which collects in annular fashion at the largest inner peripheral portion a of the crank case,

due to the action of centrifugal force, and

2. In 'a rotary cylinder en 'ne, having'a stationary hollow crank sha tv and a crank case rotatable thereon, an oil circulating system 'comprising a stationary oil reserv voir, means or supplying oil therefrom in bulk thru said hollow shaft into said crank case, an annular chamber, rotatable with said case and ada ted to receive the oil so supthus-gradually scoops up'this oil and con' plied, said c amberihaving a plurality of Veys it by gravity to the hollowportion 18 of crank shaft end 9, but outside of tube 17.- lt is dischar ed near the outer end of the crank shaft t rough port 55 into an annular space 54 of eccentric 12, whence'litsispermitted to How through annular'passa'ge 55 provided between the shaft-and the eccene' tri\c 12 into chamber 56 'of thepump casing, trolrwhich it can flow freel through opening 57 into tmeservpir 10.` n its-return from case 2 to the reservoir, thefoilnlay'ea'sily lubricate the bearing surfaces betweenshaft supplied to these last mentionedfportions of th'e engine need not be carefully apportioned and may be far in excess ofi-thek amount .required, since any -excess ofoil will either low into crank-,case 2 or directly into reservoir 10, without leakingto 'the outside or into portions of the engine whereit' may be detrimental. ,Q Y f The path ofthe `oilffrlorny the pump to the peints of subdivision yand of consumption and return to the jfirese'rvoir is indicated throughout by arroW'Sf'll Figl11il 'l claimzj {wf} v 1. In a rotary c linder ngine, having a stationary hollow crankr'shaftand a crank ,case rotatable lthereonklany "oil circulating bulk thru said hol owsrhaftintosaid .crank case, an annular chamberfrotatable .with

discharge openings, permitting the oil to escape into the crank case, a trap attached to said annular chamber, adapted to receive the -oil escaping from some of said openings, a discharge tube in said trap for discharging by centrifugal force the oil containe in said trap, and a catcher plate mounted on said crank shaft adjacent to the point of oil vconsui'njption and extending for a suitable yperipheral length into 'the`tan'gential plane in which the 011 is dischargea-from said tube, to receive a predetermined amountl ofarged fromthetube in accordin `frfojnt'fof 'said catcher plate to deect a. desired amount of oil otherwise caught by i saidplate, and. means' for collectin the cil discharged into thetcrank case an returnY ingfitito'said stationary/reservoir.,

- "3'.15I`n ay rotarycylinder en 'ne, having al` and a crank;

stationary hollow crank sha casegjfrotatable thereon,l an oil circulating system comprising a stationar fvoir; `meansfor supplying oil t erefrom in bulkfgthrus'aid hollow shaft into -said crank case,"an annular chamber, rotatable with said oil restars rcaseand adapted to receive the'oil sosupplied, said chamber having discharged openings permittingthe ofzl to escape inte the cra case,-a tra attached said case and adapted to receive the oil edito said annular chamber, adapte Ito receive said trap, and a catcher Yplate mounted on said crank shaft adjacent to the point of oil consumption and extending for a suitable peripheral len h into the tangential lane,

in which the oi is discharged from sai Whe,

to receive a predetermined amount of the oil discharged from the tube in accordanee ythe oil escaping from some of said openings, a discharge tube in said trap for discharging by centrifugal force the oil contained in said trap, and a catcher plate mounted on said crank shaft adjacent l`to the point of oil consumption and extending for a suit;

a plurali'ti;t of

"able peripheral lengtlinto theytan ntial plane,'inwhich the poil is discharge from said tube, to :receive a predetermine amount ot the oil'discharged from theftubein accordance with' the peripheral extent of the plate, and adapted to lead the oil to the point vof consumption, a shield also mounted on said crank shaft adjacent toithe point of oil consumption-between said catcher plate tween said throttle and said shield for opand the path of thev discharge tube, said erating Asaid shield to deflect oil from the-:

shield lbemg angu'larly operatable in front catcher plate in accordance with the position 110 of Isaid catcher plate to deflect the desired of the throttle and mea-ns for collecting the 5amount of oil otherwise caught by said oil .discharged into the crank case and replate, a throttle for controlling the speed of turning it to said stationary reservoir.

the engine and operative vconnection be LUIS E. SHAW.