US1242180A - Carbureter. - Google Patents

Description

I UNITED- STMES 'Ra ,msnen A. Haren), or vSUNBU'RY..rau'Nsmnva'nrn.

Specieation of Letters Patent.

CARBURETER'. A

Patented Oct. 9, 191'2.

I Application led ,Augustv 17, 1914,. Serial No.'857,149. Renewed February 27, 1917. 'Serial No. 151,379,

To all whom it may concern:

1 3e it .known thatl', J osnrn A. HAIGH, re-A sldlng at Sunbury, in thel county of North- .'umber'land'and State of Pennsylvania., have invented a new' and Improved Carbureter,

of which `the following is a specification.

r1 his invention has reference to carbureting mea-ns 'for explosive engines and lit pri- AInarily has for its object to provide an' im-f., proved means'of the character stated of a simple Aand economical construction and in lwhich the copei'ative parts are designed for automatically regulating the fuel and air'in such a4 manner as to produce a proper mixture of thel working agent for giving maximum power to the engine when desired,

. and to vary the fuel and air infeeds to suit engines,-

` the corresponding requirements.

Another and important ob] ect of my. invention is the provision of an improved construction of carbureterin which the parts are so arranged and operatively connected whereby the high speeds of the motor tend" to automatically adjust the set of the car# bureter to control the feed of the gasolene and to regulate the same in the proper ordesired proportions to the amount of the air that is drawn from `the air infeed past the gas discharging nozzleto the mixing chamber.

'With other objects in view that will be hereinafter explained my invention is .an

improved carbureter that -embodies the peculiar features of construction and novel arrangements of parts,nA hereinafter. described, specifically pointed out in the appended claims, and illustrated in the accompanying drawings, in which:

Figure 1 is a vertical sect'on of my improved carbureting mechanism for explosive the gasolene supply tank being shown'-` in side elevation and the sliding vanes or air controlling means being shown c1osed,-th'e position they assume when the engine is running under a low speed.

Fig. 2 is asimilar and enlarged view of the carbureter devices proper, the parts be ing positioned as indicated in Fig.f1','the

sliding tube and the gas nozzle being shown in section. l

Fig.'3 is a view similar'to Fig. 2, on the line 3 3 of Fig. 2 the operative parts being shown in the positionithey' assume when the engine is running on a high speed. Fig. 4;'is a horizontal section taken practi- Gally on the line 4 4. on Fig. 2.' s

casing.

e chamber 6.

ig. 5 is asimilar view taken on the line.l

5-5on Fig.4 .3.

In carrying out my inventionthe car-r4 3 and controlling valve 4, as -indicated on Figrl.l

5 designates the air inlet thatv opens into the bottom of the casing 1 and 6 is the' mixing Chamberlin the upper vend' of the casing'- 1, and. the said upper endl has the usuall flange 7 for connecting with the engine 9 designates, a tubular armv that extends Arm 9 terminates lin a vertically extending tubular member whoseV upper 'end is tapered and forms the nozzle90 from which the gaseous fuel discharges into'the mixing A tube 13 slidably mounted on the noz- 'zle 9 0 and the lower portion'o'f the said tube' is reduced and shaped to form pendent ,sad

dle arms orhangers 14, thelower ends of which'are integral with or otherwise ixedly joined with the base or saddle piece 15,`

which forms la sea-t for a coiled tension vspring 16, the upper end of which bears against a top plate or button 17 on the stem 18 of an adjusting screw 19.l that passes through thesaddle piece 15 and through' an aperture 10 in the bottom ofthe casing 1, and whose lower endl terminates in a turningherd 20.

. radially from one side of the casing or cyllnder 1, and it is held in communication4 Tube 13 hasa series of elongated-slots o'r yair passages 13a 4adjacent-'the'upper 'end thereof, andat the lower ends -of the said slots thel said tube has'l radially lprojected bifurcated apertured ears 21, with each of which pivotally connects alinkmember 22,

presently referred to. y l

28 designates a ring .flange orv .collar ixedly 1 mounted. on the upper end ofthe nozzle that forms a division member between the tube 13 and the nozzlefand the said ringhas air' passages 2,8?, as shown.

8 designates a partition or division mem annular top Slide member 82 and. an annular upper section 52e:l

lower section 25, and the said upper sectionsl lower or bottom slide 83, the latter being ot substantially triangularV shape in cross section, whereby to form an inclined surface thatvoppo'ses an inclined surface 81 on the upper partition member 82, the said two surl faces forming, as it were, an` annular inclined slideway or groove 88, the purpose ,of which will presently appear. 4.

'Coperatively mounted on vthe partition and forming the air controlling elements are a series of Yanes, l of a double truste conical segment 23, the being smaller than the are projected at su'ci `an angle that they freely engage and'move Within the annular slideway or groove formed in thefpartizflon, and as is clearly shown-in the draWin yThe severalA segments or vanes', W en at 'one position, are held closed -against each other to form, as itwere, a Venturitube or passage around the nozzle, and the restricted `apex end of the said tube is of such diameter. that when the segments are closed against each other, as shownin Fig. l, the upper end of the tube 13 closesvthe said end of the Venturi tube, when the engine is .running at the low 4speed, as in Fig'l, by

` reference to which it will be noticed that other and against the upper each of the segment'sis' connected to one of the links 22 4that by reason thereof, as the spring pulls the tube 13 down t0 its lower.- most position, that is, lwith the'solid upper end over the apertured collar on the nozzle,

the segments or vanes. are i, pulled down-` Wardly andinwardly to close against each end of the .tube 18, thereby closing the air passage between the tube and the casing andl forming an indirector restricted air passage through the tube and the air passages 28a in the collar 28 on the nozzle.

At this point, when the parts Fig. 1, the 'tension of the spring 16, is s uch that itholds the segments or-vanes closed to feed the air-directly over the. nozzle for intermiXing With'the gasolene as it is ejected 'into the mixing chamber, it being lunderstood that when thea-1r 'suction or pressure rexceeds the, tensionor back pull of the springvl, the segments orl Yanes spread apart, and form direct air `passages from the air infeed'to the mixing chamber.

By reason of the lpeculiarV construction `and novel varrangement of the several parts that constitute my improved carbureter, I have provided a simple and e'ective means for automatically.etectinglthe proper'nnxture of the Working agent 4to suitl the re quirements at dii-ferent speeds and powers of the engine. Y

By i'orming` the air controlling', element 'pvt a series o-Avanes-shaped to forma closed vthe said Yanes open or eachbeing 1n the nature lnoperation, when the engine is running join With the tube 13 andv tension of .the

it 4should bel stated, that areadjusted asvshown in nee-snee 1Venturi tube when drawn together and to approximatelyl maintain such shape when4 opened or spread, `the said element, as it is expanded or opened out, even to its tullest extent (andin the manner presently stated) serves as Venturi tube Whose area, Varies in accordance to the position of the sectionsor yenesv that' constitute the said tube, it being understood from the drawings, that spread under mospheric pressure or suction, automatically in proportion to the engine speed and load. yTo further provide for apertect vadjustment or 'flow of the gasolene to suit the engine requirements, a taper 'pin or needle 8@ valve BOis attached toa bracket piece 31 securedl upon the upper endroit' the slotted r tube 13, and the said pin or Valve-30 moves Within the" 'gasolene nozzle to open and close the gasolene nozzle, partly and proportionately, as it acts in conjunction with the sliding Yanes, before-reerred to, for automatically controllingthe out'eed of the gasolene through the said nozzle.

at louv speed, the several Yanes are-at the closed position (see' Figs. '1 and and when .thus set, the tube 13 that slides over the vfuel nozzle is at its lowest position, and at this adjustment the upper endstor' the air 95 slots therein are closed by'the -apertui-ed collar 28 on the nozzle, which now causes the airtjovflow from. the air chamber through the slots in the'tu'be'l, andthe 'air open'- ings in the collar, it beingunderstood since 100 the varies now form a closed Venturi tube of la small area, a small air supply is led .into the mixing chamber, anda consequent low air pressure and suction existsthat produces a proportionately small supply or the 'fuel to the mixing or" carbureting cham'- `ber,---it being understood that the vanes to gether with the slidingtube are held down under spring tension. v v

As the engine speeds up, and the suction '11o and air pressure on the venes 24: proportionately increases, the said vanes'are correspondingly'separated, and as the tension or-hold-,back spring connected to the tube 18 (and through it'with the Yanes 25) now 115 puts more pressure or the Yanes of the air conf .trolling means separate, under the upspeed- :ng of the engine, the air tha-tpassesup l3nt -feed of suchi'fluid is cutdown proportion! ately to the requirements of the engine.

e WhatI'claim is:

1. Ina carbureter, a.. gasolene nozzle, a

casing in which the ,nozzle is mounted, a

tube slidable' on the nozzle and having air',- ,passages adJacent to one end.'a device for moving the tube downwardly on the nozzle, saidvnozzleandtube being spaced from the said casing to leave a passage, said casing having an air'intake-belowand amixture "outlet above the said nozzle, a sliding partition in the casing for regulating the' areas ofthe aforesaid passage a'nd connections between 4the'said partition and the said tube,4

whereby when the said tube is lowered the said passage around the tube will be closed,`

' said partition being adapted to. be opened 4. y in the passage between the feed nozzle and jected within the casing-to discharge intobv the suction of the engine, `and means 'on 4the upper end of the nozzle for restricting the air'passage between the nozzle and the said slidable tube. d

2. In a carbureter, a casing having a mixing'chamber and an air inlet, a fuel nozzle vertically mounted i-n the said casing to discharge intoqtlie mixing chamber, a partition the casing, said partition including radially projected vanes adaptedl when in one position to close against each other to thereby form a restrictedair passage around the nozzle, and Ato the mixing chamber, means' .tending to normally hold the vanes closed against each other, so long as'v the air pressure against them is below a predetermined amount, said vaines being mounted to spread apart as the air pressure exceeds the vsaid predetermined amount. v

3. In a carbureter, a casing having a mixing chamber and an air inlet below the said chamber, a fuel nozzle verticaliy pro'- the mixing chambena tubef'slidable on the nozzle having air inlets adjacent' its` upper end, anapertured collar on the nozzle that forms a division between lthe tube and noz-- zle, means tending to.A normally slide the tube downwardly to bring its air inlets -below the said, apertured'collar, a partition that separates the mixing chamber from the air inlet end of the casing, said partition including frusto conical shaped segments, a slideway for the segmentssaid segments forming when in one position. a conical air duct that surrounds the slidable tube and means Vthat tend to pull the said segments end of the said slidable tube to thereby direct the air through the air passages in the tube and` through the apertured colla: on the nozzle, said segments beingfconnected to the sliding tube tofmove up and'down with it. and to spread as the suction or air .pressure against the segments overcome the together. f v

4. In a carbureter, a casing having a mix ing chamber and an air intakenchamber, a nozzle for the gasolene mounted-within the 'casing lthat discharges into the mixing chamber, apartition within the space between the air infeed and thcmixing chamber and thatl surroundsthe nozzle, said partition including a xed 'portion having an whose'upper end closes against the" upper annular slideway, a movable portionconsisting of a series of segmentalv sections ot double 4ru's'to conical shape, one portlon of y which is movably held inthe said annular slideway, the other portion of which surrounds the nozzle, means tending to ,nor-l mally retractv or draw the sections together to form a cone shaped air tube around the nozzle, and -isaid segments vadapted for being automatically drawn out and separatedas the engine suction` exceeds the retracting or back tension on the segments. 4

5. In a carbureter, a casinghaving an air linlet at the lower endand a. mixing chamber at the upper end, a gasolene nozzle that eX- tends upwardly within the casing to discharge into themixing chamber, a partition withinthe passage between the nozzle and the casing, means mounted on the said partition for controlling theinfeed of -the air to the mixing chamber, said means including shiftable members adapted, when in one position, to close'andrestrict the said air passage, retracting meansv for normally holding the members to thelrl closed position, said members being adapted for automatically spreading to provide freer passages for the 4air to the mixing chamber when the suction action of the engine isgreater than the hold back tension of the retractory means that cooperate with the said members and proportionately to the engnerequiremcnts. L

6. In a carbureter, a casing, a gasolene nozzle within the casing,'said casing having?" an air intakebelow the nozzle and a mix-f ing chamber above the said nozzle, a tube slidably mounted on the nozzle having vertically elongated air slots adjacent the up-- izo per end thereof, an apertured collar fixed on the nozzle that forms a partition between 4the nozzle andthe tube. means tending to normally hold lthe tube down with its air slots positioned, below the apertured collar on the nozzle. an annular partition that surrounds the upper end of the nozzle and the tube, said partition hadng an annular 'Fas "slideway, an air controlling valve mechanism that consists of a series of double vfrusto conical segments whose upper' sections slid-v ably engage the slideway in the partition,

pivoted links that connect each of tlie'said segment-s in the sliding tube whereby move- `nient ot the tube is transmitted to the segments :to open or close them relatively to the movement of the tube, said segments be- 'adapted for automatically spreading .when tli'e engine suction exceeds an amount sucient to overcome the tension lof i the means that normally' pull back "the sections f to their closed position.v

"7. In acarbureter, a casing having an airA intake chamber and a mix-ing chamber, a

I,fuel feed nozzle, that discharges 4into the inixingfchamben apartition on thecasing in tlie space between the nozzle vand the fcasing, vmeans for controlling lthe air passage from the air inlet to` the mix-ing cliamber, said means including-a valve mechanism composed of se'ginentvanes slidably mount- I ed on the partition, a tube slidablyv mounted on' the nozzle-having aii' passages in commu-- nication with the mixing chamber, the aforesaid vanes being adapted when in one position to close the air passage arour the slid-- ing tube and adapted tocause the air to pass through the said tube tothe mixing cham- A, bei', mear s tending to noi' cally null the said tube toj its lowermost position, -connections I that join the said vanes and the said tube to close the varies and tube to move together,V

f the'said vanes and tube being adapted v'for being moved to openiup a direct airpassage from the air intake end to the'mixing end of.

the casing when the engine suction exceeds the tension of the means for pulling the tube.

with the varies downwardly.

8. In a carbureter, a casing having an "air inlet at the lower end and a mixing chamberat the upper end, a gasolene nozzleyone position, to close and restrict the said` airv passage, retractiiig means for normally holding the members to their closed position,

said membersbeing adapted for automatif cally spreading to provide freerpassages tor the air to the mixing-chamber when the suction action 'of the engine is greater .than

the hold back tension of the retractor'yj means that coperatie with the said menibers, vand 'proportionately to the engine requirements, and a supplemental means for controlling the ejecting passage of the nozzle, said means being connected with the Q shiftable members, and including av tube slidable over the ejecting end of: the nozzle and having elongated air inlets'iii thel upper end, and means on the nozzle toi' restricting the air passage between the tube and the nozzle and arranged for engaging that endv 'of the tube having air inlets;V

9.v In a carbureter, aoasiiighaviiig an air inlet at the lower end and a mixing chamber at-the upper end, a gasolene nozzle that exvtends upwardly within t-lie casiiiglto dis position to close and restrict the vsaid air passage, retracting means for normally holding the members to their closed position,-

said members being adapted for 'automatically spreading to provide' freer passages Jfor the air to the' mixing chamber when the suction action of the engine is greater than the hold back tension of the retractory that extends upwardly within the. casing to v discharge into the mixing chamber, a partition within the passage between the nozzle andthe casing, means mounted on the said partition for controlling the infeed of the air tothe mixing chamber, said means -in cluding shiftable members adapted, when in4 ineans that coperate With the said members and proportionately to the engine requirements, and a supplemental means for controlling the ejecting `passage of' the-nozzle,

said means being connected with the shiftable members, the said means includinga :95'

taper' or needle valve vertically movable within the passage.

- Witnesses:

E. M. Ronsrnf 'y CARnm RENNnii,

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