US1202771A - Carbureter. - Google Patents

Description

Patented -ct IVI. E. BA-BBITT & J. F. BEUWONT.

CARBURETEH.

APPLICATION FILED /\Pn I s. 1914.

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MASSACHUSETTS.

CRBUERETTEL.

Specicetom. of Letjtei's lateot.

Application led April S3, 191e, Serial No. 836,532.

To .azi whom may camere:

Be i': known chat We, Mmes E. BABm, a resident of li'ookiel, and JAMES F. BEAU- zoorc, e. resiclent ci Worcester, both citie A, of time Uniesi States, residing in che cenni? of Vioicester end. Commonwealth of liieeeeclmeetis, lieve jointly invented e new :md useful improvement :iig Carburesers, of which che following, taken in connection mele the accompanying drawings, is e speciceiicn.

present invention relates to the con- Sziuczioo of o eei'buieter, having novel means forepplying heel; to the constituents of the expiosive mixure formed thereby, wlieieby to iecilicto 'and to render more intimate vehe eomeiingliog of the seid. coneciueiie. The invention also involves the provision ci o mixtuie heating' means actin ccnjuiicion 'with the first mentioned lieesbicg; ineens.

uitliermoye the invention aime to pfovide e ce'rour'esei which is equally adaptable eo the use of gasolene oi* kerosene, as fuel,

1 {iueio iis ability to promote 'bhe veporizecion of elle lese mentioned hydrocarbon un- (ler the moet edif'ooftegeous conditions coin- ,.clen, with 'is aeimixture with the-air orming che other constituent of -the explosive mixture.

@their objects and eclventeges will appear e iie descripion proceeds.

l'ii the accompanying drawings, the figure is e vertical sectional View of a coibui'eter coneruced in accordance with our inveneion, l'lie same being shown in connection 'with ifioee chambei of any orina'y cono cci oai. llie :form of carburetor to which oui` im.n pioved heating :means in che present iw foce is applied is similar in construction che cerburetei' disclosed in oui' pendio@ io joint application Seriell No, '70,826, le

ie open at its upper enel for Connection ce the inlet manifold, not shown, of ee. internal combusion engine The upper pero 5 ci the shell is Ciecechebiy secured eo o neck porion 7 projecting; from the oir chamber 2, enel within this neck porcoibf is pi'oviclecl :m annuler shouldere ieiige S, adopted zo Sup porowing 9, which ieepeii'sufed es l0, for a pui'pose which will heieiiieifei appeler.

The inner pe'ipheiy of ring 9 is eciew ihieadecl, izo ieceiif'e and Supper?, erecif oiiy sci-ew thieefled i'iollow shell 1i i, which is eioseel el'. both enfle 'eo pioviile en annuler fuel chamber l2, communiceeing by means of the tubuieiconneciiig pipe 13 with aN fiom, chamber 14, of my desirable type of construction, preferably supported adjacent fliecm'loueer. The ionen f il of the shell il hee leerling," liei'eiom, emi pire ei'ubly integral ilie'ewith, c, short cuouiei seccion l5 which communicates 'with enel supports centrally ci ille Shell il Veilicel culmlz Section lf3, 'the upper open emi of which constiiuiee e no'ezle 1'? ifo? ehe delivu eiy of fuel fiom *che Shell The entrance to the nozzle l? is beveled provicie e Valve wich en edjosceble Screw hieadeii neecile valve i9, eilfrieci Within die lower poetico of che seciion lo. The siem of the needle veve posees through e suitable etuiing bmi 20 on the lower open end of section 16 zuid extiende exteriorly of the cerbuietei Shell, being; provided on its end with e suitable knurled adjusting heed 2l, by means of which the amount of fuel ermittecl to pass throng; i the nozzle 17 may Je delicately reguletecl. l

A hollow enculee casing 22 hevilig an. up! per open end and provided with e flepenln ing annuler ieoge in Scifew trefreedecl en gogemeo; willi che upper end of che shell ll is superpose@ on shell, in poeig.'

to surround the enti of the moe-:aleA la. annuel' cover te high resistance wire, preferably German sil ver, which are protected and surrounded by a massot' tire clay or porcelain entirely fillingsaid chamber, as shown in the drawing.

vThe ends of the coil of wire are connected to leads 26, only one of which is shown, the said leads being carried in tubular. pr9jections 27 extending outwardly from casing 22 through the side wall of the upper portion 5 of the carburetor.

The cover plate 23, above referred to, is preferably formed integral with a cylindrical shell 28, fitting, snugly over the exterior of lthe casing 22 and extending well above the same to support at its upper end a second casing 29 containing` an annular chamber for the reception oit abc-ating element 30 identical with that described in connection with the casing'- 22. The leads lto the coil of wire in said chamber are carried in tubular projections 32 extending through the carbureter shell., in the same manner as in the other heating element The easing 29, which is held in spaced relation to the shell 28 by means of a series of sluiport` ing screws 33, only one of which is shown,

is spaced above the casing 22, and is centrally recessed, at, directly above nozzle 17. Extending from said recess through `the 'central portion of the casing are a series of apertures 35, forming restricted passages for the explosive mixture on its way to the inlet manifold.

In 'the operation oi' our improved device the air entering through the inlets 3 and l is drawn by the suction produced in the inlet manifold through the central opening of shell 11, and comes into contact with the Afuel emerging from the nozzle 17. rlhe heat generated bythe annular heating element 25 is communicated in considerable degree to the fuel within the annular chamber l2 of the shell l1 to facilitate the vaporization of the same; the element 25 is 'most effective in heating the space surrounding the nozzle 17 where the mixing of the hydrocarbon vapor and the air has its inception. The space surrounding said nozzle and the space inelosed between the two casings 22 and 29 and the shell 28 constitute in eil'ect the mixing chamber of the carburetor, and it is to be particularly noted that we have insured the thorough heating of this chamber by the combined ,action o the two heatingr elements. The mixture formed in this chamber passes through the apertures 35 and through the` space between the shell. 2S and casing 29 to the manifold; the transfer of heat to said mixture during its passage through the restricted openings of the second v heating element renders the commingling of the constituents still more thorough and insures the entrance of said mixture to the cylindeis of the engine at a neoami proper temperature and in a readily cour bustible condition. lllheu the suction onA the carbureter is incrcased'beyond a certain predetermined point, additional air'is obtailr able through the openings 10, heretofore referred to. fiat ring 3G is seated on the rini:r 9 and is free to move vertically with respect thereto, being guided on the screw posts 37 secured te the ring 9. Ring 36 is provided with plurality oi openings, not shown, which are out of register with the openings l0. `When the increased suction is suliicient to lift the ring 3G, air will pass through said openings to the space sur rounding` the shell 2S and the two heating elements, and in its passage will become heated by both heating elements.

The Aair thus admitted becomes a. part 01" the explosive mixture which has already passed through the restricted openings of the second heatingelement, and by reason of being heated, this air does not chill the mixture so as to render its explosion less efficient.

y 1. in a carburetor, a mixing chamber for hydrocarbon and air, heating devices disposed within said cl'iamber, one at the :inlet to and another at the outlet from said cham-- ber, and means for supliorting oneoi said devices in spaced relation to the j'wall of said chamber, to permit the passage of gases around said heating device. i

2. ln a carbureter, a mixing chamber providing; Van air inlet and a hydrocarbon inlet, an electric heating element disposed within and conforming to the wall of said chamber and surrounding both ot said-in lets, land another electric heating element disposedwith-in saidchan'iber above the tirst heating clement, and supporting in spaced relation to the wall of said chamber, said last named heating element providing a` passage therethrough for the gases in said chamber. l i

3. ln a carburetor, a mixing chamber providing an air inlet and a hydrocarbon inlet.

il (l a heating element disposed within said' chamber and surrounding both of said in-V for the passage oi' said mixture, and means for supplying additional air to said mixture after its passage beyond the second heating means, comprising a passage heated by both of said heating elements.

Lemmi 5. 'n a carbureter, a mixing chamber, ein

eieetzi'ic heating element disposed within and surrounding the passage provided by sai chamber, a shell incloslng said heating ele- A ment, and forming the wall of said chamber,

and :i second electric heating element supported by said shell, above said rst element,

said second elemeni; providing an ineu'ior

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