US994195A - Carbureter. - Google Patents

Description

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;994,195. cARBURE'mR". SYDNEY I. Paesco'rr, New York, N. Y assior to l Jonathan Peterson, Brookl Y.-

` Filed Apr. ill, 1910. Serial o. 556,802.y To all whom it'may concern: Be it known that I, Stoner I. Piiaecefrr;

wing is a specification.

This invention relates to an improvement j in carbureters of the type in which the flow of fluid to the carbureting chamber is autoi i matically varied in accordance with variations in the flow of air to the carbureting .f chamber and one of the objects thereof is to ,f i in which a mixture of increased efllciency fV is obtained. t

:l Another object is to provide a device in which the fluid is subjected to the action of 1t" heat before it is injected into the mixing chamber to facilitate its vaporization. i" A further object is to air drawn thereinto.

' Still another object is to provide a device f; simple m construction, inexpensive, readily assembled and taken apart, easy to clean; i

and keep clean, and not liable to derange- '5 ment. l t With these and other objects not specifically mentioned in view, the invention consists in certain constructions and combinations which will be hereinafter fully described, and then specifically ointed out in the claims hereunto appended.

lIn the accompanying drawings which form a part of this s ecification and in which like characters o reference indicate the same-parts, Figure 1 is a plan view of a device constructed in accordance with the invention; Fig. 2 is a sido elevation of the structure shown in Fig. 1; Fig. 8 is a sec*- tional elevation. taken on the line 3-3 in Fig. 1; Fig. 4 is a sectional view taken on the line 4-4 in Fig. 2; Fi 5 is an end ele vation of the structure s own in Fig. 1,

artly broken away to show certain. parts;

ig. 6 is a sectional view taken on the line 6 6 in Fig. 2; Fig. 7 is a sectional view taken on the line 7-7 in Fig. 2; and Fi 8 is an enlarged detail view taken on the fine 8-8 in Fig. 6.

In carrying the invention into effect there rincipal elei is provided a casing for the ments of the structure. and this casing may vary within wide limits. In the best constructions, however, and as shown, there is provided a substantial] cylindrical casin constructed of meta and having parti'- ltionsdivding it into a series of chambers iplained. These chambers, briefly described, are: a cylindrical carbureting chamberQ, an annular float chamber 3 concentric with the z carbureting chamber, an air intake 4 in i communication with the carbureting chamrovide a device of this general character Y rovide a device t .in which the mixture is a ways formed at "g one point, regardless of the variations of l l i i ber, a' fluid inlet chamber in` communication with the float. chamber, a fluid conduit 'I 6 in communication with the float chamber, l and a heating chamber 7 adjacent thc con- 1 tdiit. There is also provided a cap 8 having an outlet or throttle passage 9 in communication with the carburcting chamber 2.

The casing l and cap 8 are secured together by means of a series of bolts 10. lt is obvious, however, that other fasteninfg devices 1 iuay he iiscdf'for this purpose i desired@ Secured to the cap 8 is an elbow l1 having a passage therethrough which is an cxten- 1 sion of the throttle passage flhefoic referred to. 'lhis elbow is provided with a flange 1&2 arranged to be connected to the manifold l of' an engine with which the device is used i hy nicans` of bolts 18. It will be seen thaty i this elbow is reversible as indicated by the t dotted lines in Figs. 2 and 5l. the purpose of this structure being to enablel the device to lvarying level of the fluid within the float be attached to engines having eithcr vertically or horizontally opening manifolds, without intermediate connections.

For the purpose of feeding fluid lto the carbureting chamber, there is providedl a fluid nozzle 14 of a well known construction and which is threaded in a boss 15 formed in the wall separating the air intake 4 from the conduit 6 before referred to. It will be readily understood that the nozzle may be ad'usted; that is t0 sav, moved longvtud'inully up or down at will. This movement is necessary to vary the position of the delivery end of the nozzle in accordance with a chamber due to varying density of the fluid or varying buoyancy of the float. This adjustment of the nozzle is ordinarily made at the factory, and further adjustment. is unnecessary. There is therefore provided a plug 16 threaded into the casing 1. which tightly closes the. lower opening of the conj duit G. The conduit is in open communication with the interior of the nozzle 11i, and the fluid flows freely from the conduit into the nozzle.

Wit-hin the float. chamber 3 is an annular float 17 made of wood or cork covered with shellac; or, a hollow metal float may be used if desired. By an inspection of Fig. 3, it will be secu that the float chamber is always in open communication with the conduit 6, and it will be understood that fluid freely flows from the float chamber to the conduit. Fluid enters the float chamber Athrough a port 18 which is normally closed by a valve 19. This valve is in theform pf a' hemisphere having a stem 2O projecting into the fioat chamber. When the ennular float 17 falls with the fiuid within the `float chamber 3, it will strike and depress the stem 20, 'which in turn will force the S valve 19 o its sentia the port 18, thereby g ipermittipng duid to' dow frein the fluid qinlet chamber 5 to the float chamber. Theg l valve 19 is su ported by a float 2l within; the inlet chamber 5. It will be understood.; that the buoyancy of this float is insullicient to keep the valve closed when the float 17 is resting upon the stem 20. lts'buoyancy, however, is siiflicient to keep the valve closed when the float 17 is out of contact with the stem 20. The tendency of the floatl 21 is to turn over or capsize. This is prevented by ed. The

plrimary object of inoiinti valve on t ng the is float, instead of provi fling u thc stem 20 engaging the port 1S, and by D u the walls within which the valve is mount-i the float 17. Fig. 5. This pin is normally l device, the pipe and plug may bereversed i in position.

For the purpose of facilitating the va rzation. of the fluid at the nozzle, the mating chamber 7 before referred to is provided. A. part of the bot exhaust gases from the engine in connection with which the device is used, is led through the. pipe 28 into the cha ber 7, and thenA out through the ipe 29. t is of course to be understood) that this hcatin device may -or may i not be used as desired?r It is customary in starting an engine, to tickle the carbureter to cause a small quantity of fluid to overflow the nozzle. In the present device, therefore, there is provided what may be termed a ticklin pin i igthrough an aperture 31 in the i 30 proJectin i cap 8 into t float chamber 3 directly over held out of contact with the float 17 by a spring 32, which also serves to hold the upper end of the pin in contact with one to cause the valve to displace an very small particle of sediment that may ave lodged on the valve seat thereby reventing the perfect operation of the va ve. The constunt vibration of the device when in use, aided bv the tendency of the float 21 to turn g over, will produce a slight movement ofthe?. valve on its seat without opening the port.` This slight movement is sufiicient to dis-` lodge aiiy smal particle of sediment trap pcd on the valve seat.

For the purpose of preventing sediment, or any solid impurities, from assing into the float chamber, there is rovided a filtering screen 22 through wliic the fluid passes from the chamber 5 to the port 18. This` screen may be variously mounted. .As` shown, however, it is fixed upon an exten-f sion 23 of a. plug 24threaded into the bottom osite the portl in form andi of the casing 1 at a point opf 18. This screen is cylindrica fits closelyin a recess 25 formed in one of v the partition walls of the casing 1 adjacent j the port 18. Within tlie walls of this screen i is positioned the float 21. By an inspection of Figs. 3 and 5, it will be readily understood that when the plug 24 is unscrewed from its seat, the screen 22 and the valve 19 i and float 21 come with it, and that this action results in the perfect drainage of the chamber 5 and eas inspection of the valve and float. It may here remarked that the i extension 23 of the plug 24 is above any sediment settlin alon the bottom of the i chamber 5. Fluid is ed to the chamber 5 i j through a. plpe 26, Fig. 7, from a suitable reservoir not shown. At the opposite side of the device and at the other end of the chamber 5 is an op plug 27. When it is more convenient to place the reservoir on the other side of the spring seated valve of the ordinary type, is

ening closed by a screw arm of a lever 33 journaled on a stud 34 fixed in the wall of the ca 8. The opposite arm of this lever is provi ed with a hole 35 l, to the lever and led to a point distant from Iture 35 in tbe cap, and if it is desire to lead the cord from the lever in the opposite direction, the pin may be withdrawn from the aperture 31, placedy in the aperture 35', and the lever reversed. It will be understood that by depressing the tickling pin, its lower end will come into cont-act. with and depress the float 17, which in turn will depress the stem 20 and open the port 18 to flood the float chamber, in the usual way.

-There is provided what may be termed a l single open air intake substantially equaling 5., in capacity the throttle passage and terminating adjacent the nozzle: that. is to sav, thecapacity of the single air intake is sufficient to freely pass the maximum quantity of air used in the device under overload con'- ditions. to the carbureting chamber. to be understood that the bottom of the carbiireting chamber is located at the level of the upper end of the nozzle 14, for the reason that it is here that mixing begins. The nozzle. therefore, lies at one end of the carbureting chamber. The intake 4 is semicircular in shape. Fig. 7. and open to the atmosphere. Its cross sectional area is substantially equal to the cross sectional area of the throttle passage 0. At the point where carbureting begins. therefore, there is always instantly available the maximum quantity of air required. and it will be noted that the air at this point surrounds the nozzle 14 Fig. 3. At the other end of the cai i, bureting chamber 2 there is provided a throttle marking the beginning of what is by means of which a cord may be secured Itisfree end of which may be attached a rod for iilgntc drops to its normal position and the,

ever, a needle valve 44 ig provided` this be adjusted at any time by simply turning of the needle valve is fixed a knob 47 by sleeve is a two-part nirgate. Fins. 3. 6 and g 8. Driven or otherwise fastened in the carl, biireting chamber is an annular ring 48 having bosses 49 in which are joiiinirled two i t pintles 50 and 51. The pintle 50 is fixed.

termed the throttle passage 9. This throti lthe gates are'in this position. the flatfmfl tle may vary within wide limits. As shown. i ends of the pintles lie in a horizontal plane however, it consists of s plate 36 clamped i and the needle v alve is'in its lowest position. bffween the Casin! 1 and cap 8, Fiz.'3. The two-part airgate just described is pro- This plate is provided with a plurality of vided with an -aperture 57 for the PHFSMIE apertures 87 affording a plurality of pasotair and 'fluid under minimum suction. Sages from the carbnretng chamber to the When the suction exceeds the minimumhoni throttlepassago. Operating in conjunction or both parts of the airgate will be raise withithis plato is a rotattory plate 38 pro thereby. As the pintles are fixed to the vided with a plurality of apertures 39 oor. lparts ofthe airgate, one or hoth will he io respondino with the n ertnres 37 of the fixed ftated, this action resulting in operating thrc plate. Tlig is a well nown valve construe. cams on the pintle ends` to lift t ie sleeve 4o, tion and a further description is believed to as shown in Fig. .8. 'llie sleeve carries the be unnecessary. The rotary plate 38 is pro. `needle valve with it, n nd the discharge openvided with a, hollow Stem 40 rejecting `ing of the nozzle, 14 is thereby increased in through the top of the op 8, and) npon its 'size and more fluid is permitted to flow from upper end ig clamped an arm 41, to ther thc nozzle. When the suction decreases, the

moving the arm, The movement, of the rm sleeve a'ud valve also drop to their normal is limited by the cooperation of a Slot 42 positions. In the construction shown, which formed -in the arm and a post 43 fixed in the is the preferred constriictionpthe valve is cap 8. As shown in Figs. 1, 3 and 4. the A{ldllIStcd initially h screwing it. down until throttle is half open. A movement of the it Seats lightly ont e nozzle and then tiirnarm 41 in one direction will close. and a mi! I t bflk Slightly to produce ay very small movement in the other direction will open, o icning in the end of the nozzle, just sutlithe throttle. cient to 'permit enough fluid to pass-to the Within the carbureting chamber: that is .carbureting chamber to charge the minimum to say, between the nozzle 14 and the throtquantity of air passinp?rc throughthe a erture tle 36-38. there is provided a valve and 57 Under Stflltlng o I rio load con itioiis. connentioni; for ropnrtionatcly varying the Thrc'lftel, IIS SllCtlOn. lnClCuSCS, bOtl'i lllld fl'ow of air and uid to the mixing chamber, Mid Illl fllo admitted 1n proportionately inand this valve and these connections may creasin uantities to the maximum. vnrv within wide limiter Ag Shown` how. It wi l e readily sccn that the valve may valve coperating with the nozzle 14 to conthe knob 47 mld Without dllllbng Y trol the flow of flnid to the oorhnretingother partI ofthe device. It will be readily chamber. This valve is threaded in a sleeve 00 l S0 thft in the @Vent 0f UY ObSlrHCtlOn 45 which is free to slide longitudinally m nl@ 07110, the "51W und Siem@ mV b@ within the hollow stem 40 of the throttle. lifted out 0f the device Without dlstlllllnt-l Upon the upper end of the sleeve. which ny other ft 0f thedl'lcei nd l VWG m i projects above the upper end of the stem is'tcd t0 c om' th? nozzlcl 40 'is dumped n forked Mm 46 whioh onlt will bc readily seen that the maximum gages the post 43 before referred to, The quantities of air and f luid are always availi engagement of the forked rm with the post ahle exactly at the point where car iireting prevents the sleeve from hmmm pn its begins, and that the variation of flow of ms but does not interfere with its sliding' both fluid. and a'ir is produced instantly and movement. Upon the upper projecting end; lt one Point by the Varying SUFOIL Thf'e is, therefore, but one carbureting operation at. one 'place under a-ll conditions, as distin- 1' guished from'thecarbureting of a minimum zie. M Aiiantity of airwith a minimum quantity of Copemng with the come vnivo mi uid., after which more air is added to the flowing stream of mixture. The mixture, L as it asses the throttle, is divided into a plurality of streams which re-unite immet. diately after passing the throttle. There is, therefore. at the throttle. a slight deflection -of a portion of the flowing stream of mixture which serves to make the mixture still i more homogeneous. l

In view of the foregoing. and of what is already known, a more detailed description of the operation of the device is deemed uumenns of which the valve mav be adjusted in the sleeve toward or away from the nozto a semi-circular gate 52. and the pintlo 51 is fixed to a similar gate 53. The inner ends of these Dintles are flattened at 54 and 55 respectively. the flattened ends serving as cams upon which the sleeve 45 rests. The

interest of'brevity and clearness.

tiirnin l beyon the stem, an arm secured to the pro- .Changes and variations may be made in the structure by. means of which the invention is carried into eect. The invention, therefore, is not to be restricted to the precse details of the structure shown and described.

What is claimed is: 1. In a carburetor, the combination withl with, al support for the valve, a two-part airl gate, and canis connected with the airgate; and contacting with the su port, whereby a2 movement of either art o the airgate produces a movement o the valve and support.

.2. In a carbiireter, the combination with l, a fluid nozzle, of a needle valve cooperating therewith, a sleeve for supporting the valve,

a two-part airgate, and cams connected with the airgate and contacting with the sleeve, whereby a movement of either part of the airgate produces a movement of the valvel i 3. In a carbiireter, the combination with and sleeve.

a fluid nozzle, of a threaded valve coperat- 1 ing therewith,

for supporting the valve adjustably, a twopart airgate, and cams connected with the t with the sleeve,j\

airgate and contactin whereby a movement o either airrate produces a movement o 1 an valve.

4. In a carbureter, the combination with a fluid nozzle, of a threaded needle valve coart of the the sleeve two-part airgate, a

end of each intle and contacting with and supporting t e sleeve.

5. In a carbureter, the combination with a vertical fluid nozzle, of a threaded needle valve coperatin therewith, lan internally threaded sleeve or supporting the valve, a two-part airgate norma ly l ing in a hori zontal plane, a pintle secure to each part of the airgate, a cam formed on one end of each pintle and contacting with and su porting the sleeve, an arm carried by tie l sleeve, and a post upon which the arm slides. 6. In a carbureter, the combination with i a substantially cylindrical casing having a i .carbureting chamber centrally located thereg in, a fluid nozzle at one end and in line with the axis of the chamber. a rotatory throttle at the other end of the earbiireting chamber, a hollow cap for the easing, a hollow throttle 'e stem projecting through the cap in line with the axis of the carbureting chamber, an arin secured to the projecting end of the stem for it, a sleeve within and projecting jecting end of the sleeve, a post engaging the sleeve arm, and a needle valve threaded in the sleeve and coperating with the nozzle.

l an internally threaded sleeve i l o crating therewith, an internally threaded l: s eeve for supporting the valve adjustably, a l pintle secured to eaehf part of the airgate, and a cam formed on one name to this spemcamon m the presence of 7. In a carbureter, the Acombination with cams connected with the airgate and contacting with the support, whereby a movement rtiire for the passage of er minimum suction, and

l I f either art of the air ate under suction a. fluid nozzle, of a valve cooperating tliere- E n p g reater than the minimum produces a movenient of the valve.

8. In a'carbiireter, the combination with a two-part airgate the parts of which arc independently movable, of two cams spaced a art and one carried by each part of the air ate, a sleeve contactin' with the cams, an( a valve supported by t ie sleeve between the cams.

9. In a carburetor, the combination with a two-part airgate the parts of which are interloeked, a pair of pintles spaced apart o n a common axis and supporting the airgate, a pair of cams formed on the adjacent ends of the pintles, a sleeve contacting withvthe cams, and a valve supported by the sleeve between the cams.

10. In a carbiireter, the combination with a two-part airgate the parts of which are semi-circular and interlocked, of a pair of intles spaced apart on a common axis and supporting the airgate, a air of cams formed on the adjacent ends o the )intles, a sleeve contacting with the cams at tlie center of the airgate, and a valve supported by the sleeve between the cams.

In testimony whereof, I have signed my R. J. BOYLAN, FRANK H. Viox, Jr.

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