US1016251A - Carbureter. - Google Patents

Description

J, DAYTON; GARBURETER. APPLIUATIONTILED NOV. 2, 1909.

1,016,251, Patgn ted Feb. 6, 1912.

UNITED STATES PATENT onnron.

JAMES M. DAYTON, OF'TOBBINGTON, CONNECTICUT, ASSIGNOB TO EXCELSIOB NEEDLE COMPANY, OF 'IOBBINGTON, CONNECTICUT, A CORPORATION OF CONNECTICUT."

CARBURETER.

Specification of Letters latent.

Patented Feb; 6,1912.

Application.filediiovember 2, 1909. Serial N0. 525,942.

valves for controlling the supply to the float.

chamber, and the valve for controlling the supply to the mixing chamber; also the relation of these parts to the float chamber and" also to the construction of the float chamber.

An object of the invention is to provide a durable means for connecting. the float to the valve stemandto generally improve the arrangement' of parts and the efliciency of the carbureter;

In thedrawings which show by way of illustration one embodiment of the invention,--Figure: 1 is a sectional view through the carbureter with my improvements ap pliedthereto; Fi 2 is a section on theline 22 of Fig. 1; Fig.3 is a detail of the lower,

part-of the main casing, with the bowl forming the float chamber removed; and Fig; 4 is adetail in cross section of the float, showing its connection to the supply'valve.

My improved carbureter: comprises a main casing 1, which as herein shown is cast in a single, piece and has a main air opening 2, anauxiliary air inlet opening 3, and an outlet- 4 leadingto the motor, which is con trolledby: a throttle valve 5 of the usualconstruction. v

The auxiliary air inlet opening 3 is controlled by a valve 6' attachedto a valve rod 7,"which.in turn is controlled by a spring mounted in a supporting casing 8, carried by the main casing 1- of the carbureter. This auxiliary air inletavalve and its controlling mechanism form no part of the present invention,- but are shown, described and olaimedin my applicationfiled of even date herewith, Serial Number 525,941.

The main casing-1 between the .main air inlet 2 andxtheauxiliary air inlet, is deflected downwardly, forming a U-shaped .pas-

sage 9, through which the air is drawn by the suction of the engine. At the lower portion of the U-shaped passage 9i's an upwardly projecting nozzle 10, which: supplies the gasolene or other liquid fuel to the carbureter. Said nozzle is controlled by the needle ,valve 11 mounted in. suitable bearings formed in the main casing 1. The main. casing 1 belowthe nozzle 10has a downwardly projecting sleeve 12 formed with a shoulder 13.v The main casing 1 is also provided with a laterally projectin disk 14, which forms the cover or top 0 the float chamber.

A bo'wl 15 which is preferably of spun brass, has a central opening which fits on to the sleeve 12, so that the said bowl rests against theflange 13. When the bowl is seated against the flange 13, the upper edge thereof engages the disk or .top- 14, so thatv thechamber is tightly closed. A nut 16 threaded on the sleeve 12,'serves to hold the bowl in its proper position.

.A float 17 is arranged within the float chamber, formed bythe bowl 15, and said float may be of any. desired construction. As herein shown, said float is provided with a central opening, which surrounds the sleeve 12, and which is considerably larger indiameter than said sleeve. At the loweredge of the central opening through the float is an inwardly projecting flange 18.

The sleeve 12 has a cut away portion or recess 19, which extends transversely through the sleeve, opening at each end into the float chamber.- Said'sleeve 'also has a vertical opening 20 extending from the recess 19 downwardly. The sleeve 12 at its lower end is connected with the gasolene or liquid fuel supply,-- and the rfuel passes through. the opening 20 and the'recess 19 into the float chamber.

.As a means for controlling the supply-of gasolene or liquid fuel, I have provided a valve 21 which engages a valve seat 22 formed in the sleeve 12 by contracting the opening 20 leading centrally therethrongh. The stem 23 is, of course, slightly smaller than the opening 20 at the point where said valve ,stemextends through the same, and said valve stem extends upwardly across the recess 19 into. a guidingway in the upper: portion of the sleeve 12'. Said valve stem 23 intermediate its ends is threaded into a boss 24:, which may be formed integral with the cross bar 25. Said cross bar 25 extendsthrough the -recess 19, and is bolted or se- 5 cured in any other desirable way to the flange 18 on the float 17 It will readily be seen that as the float 17 moves up and down,

2 0 float, said valve stem may be turned into or out of said'threaded boss, thus changing the relative position-of the valve and the float. The threaded boss may be split either horizontally' .or vertically, and will serve as a .25 friction means for preventing accidental turning of the valve stem relative to the float. When it is desired to increase the frictional grip of the boss, the parts may be slightly pressed together, so as to change the normal inclination of the parts of said boss relative to each other, and thus increase the frictional grip of the same on the valve stem. It will thus be seen that I have provided a ready means for adjusting the supply valve,

without in any way disturbing the assembled carbureten.

In order that the float chamber may be readily accessible for inspection, I have provided said chamber with an opening 26,

4,0 which is formed in the top or cover 14:.

Said openihg may be closed in anysuitable way, and, as hereinshown, I have provided a screw cap whirh may be readily removed in order that access to. the chamber may be had; If it is desired to flood the chamber at.any time, all-that is necessary is to remove the cap, and by inserting the 'finger the float maybe depressed and the chamber It is essential to. determine with certainty the normal height of the liquid in the float chamber, and to ascertain if from any cause the fluidlevel is above or below thenormal height. In order that this may be readily determined, I have provided a-gage pin 27,

which as herein shown is secured to the main casing of the carburetor at a point as near the supply nozzle of the carburetor as possible. Said gage pin projects into the float chamber, and may be made of celluloid, if

desired, so that it may be readily seen when .the screw; cap 26 'is removed. By placing .the age pin as -near as possible to the fuel nozz e, the proper level of the liquid fuel may be determined, although the carbureter by. reason of its attachment to a machine may be tilted out of normal posltion. The

fuel passes from the float chamber through 'an inclined opening 28 formed in the main =casing,'which opening leads to the nozzle 10.

A draining hole 32 is formed longitudinally through the sleeve 12, and extends into the lower portion of the V-shaped passage in the main casing. An outlet hole 33 extends from the hole 32 to the outer surface of the sleeve, preferably at a point just below the nut 16. The lower end of the hole 32 will be closed by the connection to the supply pipe. This hole and outlet serve for draining excess liquid fuel from the mixing chamber, should the valve fail'to seat.

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

1, A carbureter including in combination, a main casing having an air passage therethrough, a downwardly projecting sleeve carried by said main casing having an opening extendin centrally through the sleeve, a float cham er surrounding said sleeve, a valve for controlling thefuel. supplied to the float chamber, said valve having a stem slidingin the opening in said sleeve, a fueldelivering nozzle directly above said sleeye and projecting into said air passage, said sleeve having an opening leading from the central opening to the float chamber, and a needle valve for controlling the supply from said nozzle.

2. A carbureter including in combination, a main casing having a U-shaped air passage, a downwardly projecting sleeve carried by said main casing and havmg an opening extending therethrough, a float chamber connected to said sleeve and surrounding the same, a valve for controlling the fuel supplied to the float chamber, said valve having a stem sliding in the opening in said sleeve, a fuel-delivering nozzl.e directly above said sleeve and projecting into said U-shaped ,air passage, said sleeve haying an inclined opening extending from said central openin to the float chamber and connecting wit 1 said central opening vadj acent the nozzle, and a needle valve for controlling the supply from said nozzle.

3. A carbureter including in combination a main casing having an air passage therethrough, a downwardly projecting sleeve, a supply valve located in said sleeve, a float surrounding said sleeve, said sleeve having a transverse opening therethrough, across which the stem of the valve extends, a cross bar extending through said opening and attached to saidfloat, said cross bar having a threaded connection with the stem of said valve and a fuel delivering nozzle in line with said sleeve and prpjecting into said air passage, said fuel delivering nozzle and said sleeve having an opening leading to the float chamber.

ll A carbureter including incombination, a main casing having an air passage therethrough, a downwardly projecting sleeve, a supply valve located in said sleeve, a float surrounding said sleeve, said sleeve having a transverse opening therethrough, across which the stem of'thevalve extends, a cross bar extending through said opening and attached to said float, a threaded boss formed on said cross bar into which the stem of the valve is threaded and a fuel delivering nozzle inline with said sleeve and. projecting into said air passage, said fuel delivering nozzle and said sleeve having an opening leading to the fioatchamber.

5. A carbureter including in combination, a main casing having an air passage therethrough, a float chamber, a fuel nozzle having a passage leading to said'fioatchamber, a float having a central opening therethrough, "an inwardly projecting flange carried by-said float, a cross bar secured to said flange, a horizontally split nut mounted on the cross bar, a valve for controllin the supply to the float chamber, tha stem 0 said valve being threaded into sald split nut,

whereby the same may be adjusted and friotionally held in adjusted position.

6. A carbureter including in combination, a main casing having a U-shaped portion through which the air passes, a downwardly projecting sleeve formed in said casing at the lower portion of'said' U-shaped part,

said sleeve having a central opening therethrough, and a transverse opening leading from said central opening into the float chamber, a bowl secured to said sleeve, a cover for the bowl secured to said casing, a

floatlocated in said bowl, a valve located in the opening in said sleeve, and connected to said float, an upwardly projecting nozzle formed in said air passage at the lower portion of said U-shaped part, said sleeve having an inclined opening for connecting said nozzle to said float chamber, and a needle valve for controlling the supply of fuel from said nozzle.

In testimony whereof I aflix my signature. in presence of two witnesses.

JAMES M. DAYTON.

Witnesses DENNIS HILDRETH, GHAs. M. HIBBARD.

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