US1013708A - Carbureter. - Google Patents

Description

A. WEILAND.

GARBURBTER.

APPLIGAMQN NLB 1220.19, 1910.

Patented J an. 2, 1912.

all I i |||||ll| mvemnn WITNESSES #www .Memor Aand atmospheric eontlitions.

ALFRED WEILaND, or READING, PENNSLVANIA CARBURETER i Specitication of Letters Patent.

Patented Jan. 2,1912.

Application filed D'ecembe'r`19, 1910. Serial No. 597,983.

vaporizing devices for us-'e in ronueetion with internal combustion engines and hasl for an obJect to provide a earbureter .sunple in construction. 'ethelent in operation and u u 1 n n wherein a definite working mixture is stupplied for eaeh spied and in a ratto eorrei sponding to the work done at an)v partieutar speed.

In carhuretens as heretofore constructed` the. 'parts have 'eonsisted of' eomplieated weight valves, automatic pring controlled .'valves, ball'valves and like Vdelieate parts which requreicomtantf attention for proper adjuatment andare susceptible to dirt. wear In my preseurn'vention l have derised a earbtiretel-"coi vipries-ing' feu' parts and operating to supply a rich mixture, at;4 slow :speed under load A high speed andlight-loatl. while the starting conditions are greatly simplified through the automatic priming'of the motor oper- `able even in cold weather. 1

It, further consists of othernovel features of constiurtion, .all as will he hereinafter fully -set forth. 'l For the purpose of illustrating: nrv invvent-ion,V l have .shown in the aeeolnlninving drmvingq one form thereof whit-h ie atA presont preferred by me.. sinee the .same has been found in praetiee to give satist'aetonv and reliable results. although il is t be understood that. the various instruun'ntalities of which my inventioneonsir-ts eau be variously arranged and organized andftbat inv inventionisnnt limited -to the prt-eistarrangement and organization of these in- Figurc 1 represents a vertieal Seetion of a earburcter embodying .my .invention. Fig. 2 represents a :side elevation of he .saine partlv in set-tion. Figa it r'-pre-'ents a 'plan of the same. Fia'. -t representgsl a set-tion on line :ie-:n Fig. 2. i

Similar numerals of refel'eute `iutlieate eorrespondine' parts in the. lgtnes.

and a weak mixture at' i ent. the fmetionlieing to .direet the enter-h l t. strumentalitles as herein shown and det scribed.

Referring to the drawings, 1 designates tlle easing-of a earlulreter .unlnulvin;r mj.' invention. the saule. in the presentinstance. being: formed substantially tubular b v means of the 'bore Q passing therethrough and foi-tiling a vapurizing thanilser. the walls of l whieh are preferably of annular eonstrtietion :t for the purpose of providing a 'jat-kot through whit-h a suitable medium ma be' passed to -ivarul -the wal-lis'and assiat in the vaporizing action. 'A Suitable inlet't and outlet 5 are provided to permit the eireula, tion of the tluid in thc jacket. 4

4t designates. in the present instance. an annular member. forming@ main reservoir ebamber 't'. `tvliieh. as here 'Sho\vn. is. detaehab| \f eonneetetl to the 'easing 1 by means of a 1 bolt seem-ed at loneendto a. suitable web 9,01 tliecasing 1 andgat the opposite enden- {ragingandf'atpporting 'fr eapiiOproi-ided A75 an annular pasage l2 therethrough the walls-S0 of wliieh are preferably qonvergngftoward thelvalmrlzmgrpaage."as will be apparing air into the passage 2.

lt desif fnates ports formedin the wall '85 t3 and serving: asi-a means of eonim'unieaff tion between the annular paesage 1Q'and the ulain reservoir 7.; `lt`\villbe elear that air u'hieh .is draivnjnto the va porizing ehalnber .2 paques the ports 14 Vand draws therefrom 90- a supply `et tho-fluid fuel and it will be noted that the. |'orts 14 are preferably ineliued' so .thatl the 'inlet vthereto from the reservoir T is beneath the level of the fluid fuelr-r- This' level is of eourse maintained `9 eonstant and therefore a quantity` of fluid is always in position in the por-t# i4 for mix'- l.- designates the main (luid fuel i leading: to the ma present .ins-(ance. lis ,eontrolled by means of n/l et.

L a valve'lt' prefera-lllv. haring a iveight lfd' to ettert the elosing nf the sta-unal theretol valve-p while `a stent..1S,. slldinglv supported in aibushing!- member 10 Serves as a guide ,`1Q5

holding: the Vvalveiu proper"relation to .its seat. lt will be noted .that the lnnshi't;r 10 is preferahtvj detarhalllv seeured to .the member t'l in order that `readv aeeess may hev had to-the valveparts and that a eap 20 110 in4 reservoir 't' and. inthe .100

'Y Eovided with ports 22 and 23, the former float 29 rest upon the ends of the lever 26,

. a purpose presently to be described. It will is secured thereto o`ver the stem 18 in order to prevet''iefakage at this point. As here shown, th`e valve 16 seats upon a sleeve 21 which is locatedpartially withinpthe mem- -ber 6 and partially exterior thereof and is ing positioned adjacent the fluid in let 15 and the latter within the main reservoir 7 and'above the seat of the valve 16, as will readily be apparent. A suitable cap 24 is preferably secured by means of screw threads 25 or the like to the sleeve 21 and serves to maintain the fluid inlet 15 properly supported and also provides a means to remove the valve parts if desired.

26 designates a lever, in the present instance, pivotally mounted on the spindle 27 within the member 6, one end 28 of said lever being normally in Contact with the weight 17 while its opposite ond 28x is in engagement or contact with a float 29 within the main reservoir 7. It will of course be apparent that as both the weight 17 and any movement of the float will cause a corresponding movement of the weight 17and thereby regulate the openingr and closing of the valve 16, it of course being understood that the weight of the parts is properly a'djusted to obtain the movement desired.

30 designates, in the present instance, an

xtension secured to or formed integral with the annular member 6 and has formed therein a plurality'of chambers 31 having communication with the main reservoir 7 by way of the passages-32 and 33, the latter bein contro led by a needle valve 34 adjustily mounted in the walls of the extension, the said valve stem carry' a plate 35 for a purpose presently to be escribed. These plates 35 support also a valve member 36 which is mounted for adjustment by means of the threaded bolt 37. IThese valves 36 are designed to control an air inlet 38 in the walls ofv eachchamber 30 whereby air has access thereto above the ffluid level` 39 designates a mixture outlet from each chamber 30 the same having communication by way of the fitting 40 to the respectiv conduits 41 and'42, the former of which joins the casin 1 preferably at a oint above the throt e valve 43 while the atter is secured to the said casing-1 at a point belowr the throttle valve 43 and in the presentl instance substantially adjacent thereto ,for

thus be noted'that two mixture jets are pro# vided as auxiliary to the main mixture jets 14 anlwhich'supply asuitable mixture of ,1111s and air to points lin the vaporizing conduit 2, one of which is operated when the throttle is completely closed while the other comes into action Vas sooras the throttle is slightly opened.

hethrottle valve 43, in the present inst ance, is the ordinary iiap typeV suitably pivoted on a spindle 44 the latter projectmg exterior of the casing l and having secured to one end thereof the control lever 45 for operating the same, it of course being understood that suitable connections are made with this lever so that it may be operated from a convenient oint.

In the operation of t e device the motor fluid enters the inlet 15 passing through the sleeve 21 into the main reservoir 7 whchit fills to the desired level, this of course being determined by the adjustment and relation of the weight 17, lever -26 and float 29. The fluid fuel of course has free fiow by way of the ports 32 and 33 to the chambers 31 and a constant levelof fluid is maintained therein whereby these two devices serve as priming, slow speed and intermediate speed vaporizing devices.V The motor started with the throttle valve 43 in closed position and therefore the strong suction is produced in the vaporizing tube or bore 2 and since at this time the 'only inlet thereto is by waI of the conduit 41 a rich mixture of gas an air is drawn from onerof the chambers 31 which serves as a'4 slow speed .auxiliary carbureter. v

The chambers 31 are` maintained iilled with fluid fuel to a fixed' level at all times when the suction in the vaporizing chamber 2 is less than that required to'draw mixture from the 'conduits 41., and 42. These conduits 41 and 42 are-only utilized for starting and at slow. speeds when the throt tle 43 1s 'closed or nearly closed, since at this time thesuction in the vaporizing chamber 2 is the strongest. When thetlirottle is opened the vacuum in the vaporiing lthrough the liquid in the chambers 31 as notto eifect the How of liquid from the port 33. -Thel How of liquid through the port 33, restricted by the valve. 34, 1s of course also determined by the position of this port with reference to the liquid level in the main reservoir 7 as well as theposition of the needle valve. VThus it will be apparent that the chambers 31 are in fact mixing' chambers, only, at 'the time the engine is startin and at slow speed, as' at other times the flui remains at a xed level above thse chambers. As soon as the engine is started the fluid in thesechambersfBl is immediately drawn out, lthereby emptying .the chambers and drawing air through the port38 past the las jet 34 to produce the necessary carburation for the engine While running at slow speed. However, as soon as the throttle valve 43 is open the main mixture supply of air and fuel from lthe passage 12 and jets 14 comes into operation so that there is practically no suction through the auxiliary conduits at all and during normal operation the chambers 31 remain filled with fuel and out ot' commission. l

At medium speed of the engine the throttle valve 43 is preferably opened slightly as shown in dotted lines in Fig. l and thereupon the jet of conduit 42 is brought into action and as there is at this time a strong suction produced in the vaporizing tube 2 both of the auxiliary chambers 30 are in action and the required mixture for the load and speed supplied. For high speed throttle l13 is opened widepand the main air supply is admitted through the inlet 11 passing upwardly' through the vaporizing tube 2 and drawing tiuld fuel through the ports ,14 and the flow of air is so free that the jets of conduits 41 and 42 cease Working and the desired mixture for high speed and light load is supplied in the proper proportions. The supply of fluid from the auxiliary conduit 56 is a constant or fixed quantity for starting purposes and for slowl speed only and as 'soon as the speed of the motor is increased by opening the throttle, the main' jets 14 come into operation andthere is substantially no suction through the conduit 56 and it ceases to operate to supply any mixture of air and fuel. i

I t will now be apparen't that I have devised a novel and useful construction of a carbureter which embodies the rfeatures of advantage enumerated as desirable in the` statement of invention and the above description and while I have, in the present instance, shown and described a p.eferred en'ibodiment thereof which has been found in practice to give satisfactory and reliable results, it: is to be understood that the saine is susceptible of modification in various particulars without departing from the spirit or scope of the invention or sacrificing any of in. advantages.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent, is:

1. In a device of the character statt-d, :i casing having a mixture outlet, a throttle valve controlling said outlet, a mixing chamber in said casing having air and Huid fuel inlets, a Huid fuel supply for said mixing chamber, and means todeliver an auxiliary explosive mixture to said mixing chamber ou opposite sides of said throttle valve.

2. In a device of the character stated, a casing havingY a mixture outlet, a throttle valve controlling said outlet, a mixing chamber' in said casing having air and fiuid fuel inlets, a reservoir for fluid fuel secured to said casing, a tiuid fuel supply, a plurality` of auxiliary reservoirs adjacent said main reservoir and communicating therewith, air inlets ifor said auxiliary reservoirs, and means to convey an auxiliary. explosive mixture from each of said auxiliary reservoirs, the respective means of each .auxiliary reservoir communicating with said mixing chamber on opposite sides of said throttle valve.

3. In a device of the character stated, a casing having a mixture outlet, a throttle valve controlling said outlet, a mixing chamber 1n 'said casing having a mam air lnlet opening, a uld reservoir seeuredto said casing and having ports communicating.

with said mixing chamber, a Huid fuel supply, means to control a supply of Huid fuel to said reservoir and maintain a constant level therein, a plurality of auxiliary reservoirs adjacent said main reservoir,each having communications therewith, a valve controlling the tiow of fiuid between said reser` voirs, means for .conveying an explosive mixture from one ot' said auxiliary reservoirs to said mixing chamber between said outlet and said throttle valve, and `means for conveying an auxiliary sup ily of ex-4 auxiliary,

plosive mixture from the othe reservoir to said mixing chalutier between said throttle valve and main fluid inlets.

ALFRED VVEILND.

Witnesses:

ROBERT M. BAER, C. D. MCVAY. y

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