US1225466A - Carbureter. - Google Patents

Description

H. C. MERRMM.

CARMRETER.

APmlcAmw 'Hman ma. 2z, 191.5.

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2 SHEETS-SHEET i CMBURETER GO., 0E NDEANAFQLES,

NDIANA, A CGBJPGETION OE' ENDXN..

@.ELE/IBURETEE.

Specicetion ef Letters Eatent. Paaijiteed Si, lgll'ii'.,

Application led 'March 22, 19M. Eerel No. 85,586.

T 0 all whom at' may Be it known that l, HARRY C. Maenner, a citizen ot' the United States, and a resident of indianapolis, in the county oE Marion and State of indiana, have invented certain new and useful mprovements in Carbureters, of which the following is a specification.

My invention relates to earbureters for use with internal combustion engines and is an improvement over the form shown and described in my Let-ters Patent No. LS'TAS, issued to me on the 13th day ot flune,y 1916.

cline of my principal objects is to efieet a maximum saving in fuel by causing the same to be broken up as it emerges from a nozzle, and to insure a thorough saturation of air at all engine speeds through the manner of introducing-the air around a nozzle.

Another object is to derive maximum power from all points ot ecnomy savingr and by minimizing friction in the air passages. Also by means of damper-s of a peculiar `construction which are `adapted to open in the degree oi engine requirements and in a progressively easier manner due' to their manner oii mounting. thereby asv suring lowvaeuum so necessary to obtain maximum power and uncommon 'to the con'- ventional carbureter of spring and weight type.

A further obieet is to provide a plurality of venturis which are successively brought into action according to engine requirements. whereby perfect acceleration is aecomplished and the correct amount of fuel is delivered. this being essential to prevent the engine from choking or loading.

A further object is to provide a supplemental control whereby an initially rich mixture is provided for starting. and further objects are to provide such earhureters which arc simple in. construction. assembling. and installation. which are well adapted to the purposes tor which they are designed. whieh are composed of tew parts not likely to get out of order. and which are comparatively inexpensive.

My invention is fully described in the tollowing specification.A of which the aecompanying drawings'form a part, in which like eharacters reifer to like parts in each of the views. and in which Figure 1 is a section taken through a. carburetor constructed in accordance with my invention. on the line l of Fig. 3;

Fig. 2 is a section taken on the line 2 2 of Fig. l;

Fig'. 3 is a section taken on the line 3 3 of Fig. l; and Fig. i is a fragmentary detached view of a detail.

Referring' to the drawings, 5 represents a casing divided into a lioat chamber 6. -a mixing chamber 7 having a pipe 8 leading to the manifold intake ot' the engine and in which is a. butterliy-valve 9, and an air chamber l0 to which air is led through a pipe 11.

The ffasolene ,is led through a nipple l2 carried by a collar 13 held on a plug 14 by means of a nut 15, said plug having bores lo and 17 joining the interior of the collar 13 with the interior of the float chamber 6.

lWithin the chamber 6' is a vertically movable float '18 upon ther upper surface of which two weights 19 rest, said weights being carried by levers 2O pivoted to a removable eover 2l of the chamber 6 at 22 and the inner ends oi said levers bear against 'the under side of a flange 23 upon a, needle valve Q4 normally closing the bore .17 and guided in the cover 21, a cap Q5 being provided for said valve on said cover, and the fioat chamber has a pipe 26 connected with the lower part thereoiI and which pipe extends beneath the mixing chamber "1', a screw threaded plug Q7 closing the outer end of said pipe.

Thepipe, 26 is pierced byv a nozzle 2S threaded thereinto and assembled through an opening 29 vclosed by a plug 30, this nozzle being arranged within a. venturi 31 adjacent the float Chamber 6 in communication ywith both the air and mixing chambers 10 and 7, respectively through a eonstricted passage of least diameter in the position of the upper end ot' the nozzle 28.

The, nozzle 28 is normally closed by means ot a needle valve 32 having a` hemi-spherical flange 33 thereon slightly above the nozzle and guided in a plugl S4 in the upper snrclosed by means of The opposite end of thej lever fie engaged in e not e? the uppenportion ol the casing; 5, coil Arranged onthe e 8 is e nozzle 37 piero/ii assembled through on a plug 39, and seid e3 rests upon e transverse pin e vertically movable 1n i, spring' 'L18 maintaining lever engagement with said pin, enel said levei' 43 is provided with e bore for thepessege of the needle valve 32, the flange 85 bearing on the upper surface of the lever li-3, and it Will he noted that by rotating the nut-4:7 the relationship hetween the needle valve 32 and the nozzle `28 may be adjusted and'flifting the nut l? 'will open the nozzle 28^to provide on initially rich mixture i'or engine starting with out changing the seid 'relationship other then for the moment seid nut is held raised.

Within the casing vo, between the chembers 7 and l0, are tvvo partition plates i9 ezido) carrying pivots 51 and 52 for two leef 'members 53 and 5l normally in horizontol arrangement and the inner ends of which touch to forni e partition between the chambers and l0, lout the contecting edges thereof are jointly provided with e circular opening for the passage of the needle valve j that no air may pese' 4G, and it will be noted from the chamber l0 to the chamber .7 when these leef members are in normal positions, nor con any gasolene'escepe from the nozzle 37 when the needle valve l0 isin its normal lai-ged from the vgradually for o reason-later pointed nozzle closing position.

Each of these leaf members 53 end 54 corries a damper, 55 and 5t' respectively, e2;- tended from side Wall to side Wall of the casing 5, as do also the plates t9- ond 50 ond the leef members 525 and 54, thesezdornpers being curved eccentrically of tli'e're'spectiye pivots 51 and to2' 'and having; depending Wings 57 Iend 'ftlie inner surecesef each el? which yis oreuated and progressively encontecting edges oft the plates 49 and 50 tofprpvide e. gradually enlarged spece between seid dempers' and .idepending y selling upwardly on their pivots out, there/hy providing e venturi ci gradually increasing 'respective leef memoers 53 and 54: end 'to v.es

the lever 3 and to each. other et 63 reise the oi the outltpipe meintoin the needle- -fl in e threaded rod' wings as the 4 leef membersJ areneedle-valve' Al0 to allow cope from the nozzle 37 correspondingly and at the seme time edmitting air to the mixing;` chamber 7 around the nozzle 37 and between the edges of the lee-ll members '53 and 5e, the degree of needle valve opening being less than the degree of lee-ii member, movement et their adjacent edges because-of the diiierence of radii of the arcs described by the seid edges and the pivots 6l end62, and this needle movement becomes progressively lees with the seme leal member movement as the pivots 6l andv G2 approach the vertical axial planes of the pivots'l ond 52, thereby the gosolene to esletionship of the 'pivots 6l and 62 nd 5l y lamd 52 renders the 'leef member movement progressivelyieesier es the letter are raised.

ln Figs. l and fl l lieve shown extensions to the needle valves in the 'fuel nozzles consisting oil-o rod 64 on. each-valve carrying o spider 65, or ported disk, et its lower end, this serving' guiding ineens for the respective valve, but l do notl lto the use thereof as any suitable equivalent moy be employed.

When the butterfly-valve 9 is partly opened, the desired reletionsliipbetvveen the nozzle 2F) and needle valve 32 having previously been attained by m on r the threaded rod 46., sucked out of the nozzle 28 :1nd,striling against the rounded surface of the onge 33, is broken up and saturetes the oir passing upwerdlyeround the .nozzle 28 on its wevto the pipe 8 ond to the engine.

When 'the bntterlly-valve continues to open and the demand for fuel becomes too greet for the venturi. 31 to. tition plates 53 andv 54: and connected dem` -pers 55 `incl 56 rise in accordance with the demand, thereby raising'the needle volvo 40 et the diflerentspeeds,

but the valve 40 may he vertically adjusted hy .means of nuts 66 whereby more or less gesolenemoy'he supi inventori 3l the mixtureis r'chedliir'tlie progressive needle volvo opening, but `in the supplemental venturi the mixture" is gradual y impoverishedes the greatly enconline myself supply the per;

ico4

l 3.20. .while the engine 1s et mexlmum eclenoy `speed ofthe engine inreeses end'enfl substantially :lessees gine demand for luel oeoomes greater and, in starting, the nut l? may loe manually7 lifted. to cause anr initially rich without in any way altering the preoeter mined adjustments.

'My (airlnireter is thoroughly praeticah lool-prooi, and entirely anto- Inatie in action to comply with the engine demands and. while l have shown a preferred ennhodiinent thereof, l may change the details shown and desrrihed provided such changes do not depart from the spirit of the invention or the seope of the aps pended claims.

'Having full y described my invention.E what I claim as new7 and desire to secure ley 1. A carburetor, comprising an oil supply, a plurality of nozzles in eoinniui'iieation therewith, a valve for each nozzle? means for leading' air around eaeh nozzle, two pivoted dainpers enihraeiney one oi said nozzles adapted to he raised hy a demand oll aneugine. and links connecting;- said dainpers pirotally with the respective valve to open the latter as said dempers are raised to increase thl air supply.

2. A carburetor` coni risinfr an oil sus lv f ZD -1 5 a plurality of' nozzles communication therewith, a valve for each nozzle, means for leading air around eaeh nozzle, 'two pirated dampers emhra'icing one of said nozzles and provided with surfaces eccentric to their pivots whereby said dampers gradually separated from eaoh other and from said nozzle when raised from normal positions to increase the air supply, and links conneetingl said dampers pivotally with the respective valve to open the latter as said dampers are raised to inerease the air supply.

3. A carburetor, comprising .an oil supply` a plurality of nozzles in communication therewith, a valve for each nozzle, means for leading airraronnd said nozzles, two pivoted dampers emhracingn one of said nozzles and provided with surlaees eeeentrie to their pivots wherehy said danuiers recede from each other and 'from said nozzle when raised from normal positions to inerease the air supply, and links pivoled to said dainpers adjacent their pivotsand to said valve of said nozzle wherehy said Valve will he .raised in gradually decreased degree as said dainpers are progres ely1 raised lo increase the air supply and thus iinporerish the milzlure :it increasing engine speeds. l

i. A eaihureter eomprising a easing', an oil supplyi a plurality ot nozzles oomniuniealion tluzrewith for leading air around said nozzles, a partition arranged horizontally in said easingy consisting ol opposi'tely directed plates, a lealg roem her piroted to eaeh plate and normali." touehingg' each other at treir outer edges and onlin-:ning one of said nozzles, a Valve 'For nach nozzle, and means 'for raising the valve of said einhraeed nozzle when said leal' nien'ihers are raised, thereby increasing the supply or" the vfuel mixture.

A earhure'ter, Comprising Casing, an oil suppljwa plurality of nozzles in communieation therewilln a "faire for each nozzle, means for leading air around each nozzle, a partition in said easing;l consisting' of eppositely direeled plates and normally oontaetingg plates pivoter" to said first named plates 'and ennhrzufineA one of said nozzles, means Vior raising' the valve of said embraced nozzle when said contacting; plates are raised. and means for providing; a circular venturi around said embraced nozzle eonsisting ot dependent wings of interior arenate formation the radius of whichv is prole'ressively increased downwardly, whereby a gradually increasingI diameter of said Venturi results as said. Contacting plates are raised to inerease the air supply.

A Carburetor, comprising a easing an oil supply a plurality of nozzles in com niuncation therewith, a valve for each nozzle, means for leading; air around said nozzles, means for adjustingf one oil said valves Y with respect to its nozzle, means for inereas in e' the air supply and for gradually' increasing the oil supply the other nozzle in a deereasineproportion, and a lei/'er in pivotal eonneel'ion with said first named valve,

with said adjusting; means, and with the vvalve of said last named nozzle whereby 'the opening' of the valve of said last named nozzle will raise 'the valve of said named nozzle in the degree of engine requirement lin RR LL' C RRLL lillRRllli/l. W' i tnesses laisin'n i2 Tr i aflossing l?! .RSHALL

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