US1279856A - Carbureter. - Google Patents

Description

UNITED STATES PATENT OFFICE.

HENRY JAMES GAUTI-IIEB, OF PLAIEEIELD, NEW JERSEY, assIsNoRro GAUTHIER &

cLARKE, 0E PLAINFIELD, NEW JERSEY, A

GAUTHIER AND FRANK B. cLARKE.

COPARTNERSHIP consrsrme' or SAID GARBURETERE To all whom it may concerh: 7

Be it known that I, HENRY JAMES GAU- THLER, a citizen of the United States, and

resident of Plainfield, county of Union,

be made withoutgoing outside of thescope of my invention as defined the claims.

' In the drawings: a p Figure 1 is a longitudinal central section; Figs. 2and 3 are 'plan and bottom detail views respectively; V

Fig. 4: is a plan detail view of another P r Figs. 5 and 6 are plan and bottom views respectively of another'part; a

Fig. 7 is an. elevation partly in section with some parts removed; and

Fig. 8 is a detail elevation. Referrmg more particularly to the drawings; the general organization is shown in Fig. 1, in which 1 is a casting having a substantially hemispherical mixture chamber v 2 and a reduced neck or passage 3 leading to the manifold (not shown) of any internal V V In the passage3 butin "terflyvalves is oscillatably'mountcd on combustion engine.

shaft 5, and constitutes the 'usual'throttle controllable'fromwithout by any usual or suitable means. Casting 1 has an upper fia'nge 6 providing means for attaching it to the manifold and alower flange 7 which provides a seat for bolts 88,' whereby casting i 1 is united withfiarige 9 of the casting 10.

10 comprises a f central cylindrical block or hub ll'and an outer concentric cylinder 12, 11 and'l2 being rigidly connected "through websf13. neck or extension leis connected fwith a short pipesection 1 5by means of 50.

any suitable coupling' c levic'es, l5 in'turn being coupled with fuelpipe 16 leading to the 1. fuel reservoir; j net lshown. The passage i jext nsi n 5 ntinued pfthr h Specification of Letters Patent.

them from being displaced. laterally.

' hub 11, the upper portion of the passage bemg reduced in diameter and I internally Patented Sept. 24., 1918.

Application filed August 4, 1917. Serial No. 184,509. I i

threaded to engage the-external threads on valve seat member 17 17v hasan enlarged head 18 and a central bore or fuel passage 19. The fuel passage is reduced in diam-f eter atits upper or outer .end to the usual dimensions in a needle valveand provides at 20 a seat :for the pointed tip 21 of pin 22.

, Pin 22 is externallythreaded and is adjustable with respect to hub23 of air valve 24L. Clamp nut v.25 serves to maintain the adjustment. Air valve 24 is 'r ec-iprocable up and down. and is designed to intermittently .close thearcuate air passage 26 between the "hubll and cylindrical wall 12 (see Fig. 4).

f Valve 24 does not seat directly across the upper surface of hub 11 and cylindrical wall 12 but has on its underside, afpair of ,con-.

centric annular flanges orskirts27, 28 which have sliding Contact respectively withhub 11 and wall 12. forming an annular guideway. Stems 29 project downwardly through the holes 30 in webs 13 (see Fig. 4). On the .loweror outer ends of stems 29 the nuts 31, reinforced by clamp nuts 32, provide. a seat for the springs 33; 34. At their upper ends, 'springs 33 and 34 seat against the fiat ring 35. This ring has on its under side a pairof raised shoulders 36 which are adaptedto be embraced by the larger springs 33 to prevent imilar jshoulde'rs on 'lnuts perform the same functions with respect to the other ends of the springs 33. The smaller springs 34,

being of a diameter only slightlylarger than the stems 29', -do not require,- any auxiliary retaining device; In order to vary the-tension off the springs-33,1 interfpos'e av cap 37 betweenfriiig35 andljcasting 10 .I- Cap 37, has an internal thread engaging an external thread upon the casting and a flange 38 against which'j the ring'35 iswpressed by jfvancing or retracting cap 37 5 the tension 'of springs 33w1ll' be lessened or ncreased respectlvely. On the under surface of flange 'springs It ,wjilllbef obvious that by. adi 38, I, provide seriieslofiradial grooves or f whe e isi s Ease WES tee -ti e in.

- scorings two of which are 'sho'wn at 39. ,aIidfIOQ" i i i indication oft-hev amount of adjustment, as well as a locking device to prevent the cap 37 from turning accidentally.

' air; valve is substantially closed, butinot absolutely, because of the"ports 43,[44 which arenever wholly masked (see Fig; 7) These narrow passages between 'Tl'llX'bllIB chamber- 2 and the atmosphere, furnish sufficient leakage to prevent :disastrous consequences in ;case of back firing. I have" found also that the valve 24 rise and fall' with a smoother motion when theports43, 4242 are constructed as shown. :During thesu'ctionstroke of each cylinder ofjthe engine, the difference in pressure "on opposite sides ofthe valve 24, :will increase from zero to a maximum. At "the beginning "ofthe stroke, thediflerence in pressure will berequalizedzby the flow. of air through port 43, t4. A jthe stroke continues, however, the difierencein pressure will become too great to be equalized through theports and valve;24 will rise, carrying with'it the stem 22, thus permitting the gfio'w off'uel through port "20. The upward movement of the valve2 land' stem 22 will be resisted at first by the {springs'33 and eventually, if the movement continues, by spring The latter spring is shorter and stifler than the former. This varying of the load of the valve has two important functions; first, itffacilitates setting the valve in motion at a time when its inertia would tend tohold it down, and subsequently counteracts the tendency oflthe valve to rise farther than desired because of its inertia of movem'ent; econd, the increased 'load tend's'to reduce the supply'ofnair but not the supply of'fuel and'as a conse'quence-at high speeds the .mixture will be richer than at low speeds.

v a ndgadjustment.

The carbureter fdescrib'ed'above has no float chamber and'throughout has been'designed witha view. tocheapenin'g the cost of manufacturing and simplifying Y operation 1, In a carbureter, the combination" with 7 parallel air and fuelflpassages, of air and jf'uelfvalves" operatively positioned with re-' 'spect to said air 'and fuel passages respectively,- said valves reciprocating in axial direction and'being joined together a uni- Furthermore, each oft-he tary-structure, a plurality 'of'stems carried by said unitary structure and presented through the carbureter casing in a direction parallel to the aXis of movement of said unitary structure, heads on the-outer ends of the said stems, coiled springs mounted on saidstems and bearing against said heads,

and means for opposing the inward movemerit of the inner ends of said :sp ringasaid means comprising a cap mounted on the carbureter and-embracing said stems.

2. In a carbureter, the combination with parallel air and fuel: passages, of air and fuel valve operativelypositi'oned with re spect' to said airand'. fuel passages respectively, said valves reciprocating 1in axiahdirecti'onsand being joined toge'ther in a uni- "tary structure, a plurality 'of'jstem's carried by said unitary structure and presented through the carbureter casingin a direction parallel toith'e aXis'of' movement of said unitaryr'structure, heads on tl'reeuter ends of said "stems,- coiledspringsmountedfon said stems and bearingagainst said heads, and means for opposmg the inward move ment of the inner ends of' said springs,said

means comprising a cap "mounted on the carbureter and embracing said stems, said cap being adjustable .inaxial direction. 7 A

3. In a carbureter, thecoinbinationfwith a miX turechambe-r, of'ai bloclrclosingfione.

- side'of said' mixture chamber, 'a'cen'tral fuel passage entendingthrough saidbloclqan annular air passage also eXtendi'ng through said block, a valve plate positioned' across the inner ends of said fuel and air passages,

said valve plate being movableaway from said block, a fuel valve "carried by said plate and presented toward said fuel passage and concentric annular flanges carried by 'said plate and engaging the inneriand-outer,

walls respectivelfvOf said annular-air passage. I s

431511 a carbureter, the combination of a mixture chamber, a reciprocating air valve having skirts or flanges presented toward the incoming air andhaving'air ports in sa1dfianges', anannular guide-way for said flanges, a "fuel passage central of the airvalve and a fuel valve carriedby'tlie airvalve. r

5. In a carbureter, the combination 'of'a mixture chamber, a reciprocating air valve having skirts or flanges presented'towar'd the incoming air andha ingyair ports in said flange's, jan-annularjguideswayfor said flanges, spring means tending 'to close {the valve, a'fu'el passage centralof the a1r-valve and afuelvalve carriejdby the air-valve.

'6. In a carbureter,'thccombinationof a said fi'ange s, an anniilar; guide-Way 'for said j'mijXture chamber, a reciprocating'air valve;

hav ng skirts or flanges presented toward 'the incomingair and hav'in'g air :ports valve and a fuel valve carried by the airvalve, the air-valve having mixture outlets between the flanges and fuel valve.

7. In a carbureter, the combination of a mixture chamber, a reciprocating air valve having skirts or flanges presented toward the incoming air and having'V-shaped air ports in said flanges, an annular guide-way for said flanges, a fuel passage central of the air-valve and a fuel valve carried by the air-valve, the air-valve having mixture outlets between the flanges and fuel valve.

8. In a oarbureter, the combination of a mixture chamber, a fuel valve, an air valve mounted co-axially and movable with the fuel valve, having an annular guiding flange ported toward the fuel valve and mixture passages communicating with the mixtuil'e chamber between said flange and fuel va ve.

HENRY JAMES GAUTHIXER.

Witness JOSEPH T. VAIL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner .0! Patents,

Washington, D. G.

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