US1087218A - Carbureter. - Google Patents

Description

H M. DALTON & O. M. CONKLIN.

GARBURETER. APPLICATION FILED AUG. 9, 1912.

Patented Feb. 17, 1914.

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attomu HARRY M. DALTON'AND CHARLES M. CONKLIN, OF CINCINNATI, OHIO.

CARBURETER.

Specification of Letters Patent.

Application filed August 9, 1912.

Patented Fcb.17, 1914.

Serial No. 714,296.

To all whom it may concern Be it known that we, HARRY M. DALTON and CHARLES M. CONKLIN, citizens of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented certain new and useful Improvemerits in Carburetors; and we do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to carbureters, such as are in use in connection with internal combustion engines, and the object of the invention is to provide a carburetor of this type, capable of adjustment to normal conditions of operation and being provided with means whereby under varying conditions the required volume of fuel may be supplied and the required volume\of air au-.

tomatically added thereto, to effect the proper working of the engine, and it will be noted that by our improvement, the necessit of a float valve is obviated.

he invention is clearly illustrated in the accompanying drawings, in which;

Figure 1 is a vertical sectional view of our improved oarbureter, through the outlet to the engine. Fig. 2 is a vertical sectional viewtransverse to that shown in Fig. 1.

Fig. 3 is a plan view, of the base of the carbureter. Fig. 4 is a bottom plan view of the main body of the carburetor. Fig. 5 is a sectional view of a securing collar for the torsion wire. Fig. 6 is a top view of the same. Fig. 7;, s a plan view of collar and handle for contrtilling the torsion wire.

1 represents e main body of the carbureter provided with the extension 2 in which is placed a suitable throttle for the engine. The main body 1 is mounted upon a base 3, in which it is secured by'screws 4 or other suitable means. The base 3 is open and is provided with a bridge 5, hollow for a portion of its length to admit a supply of fluid fuel, to the vertical tubular part (3 which is preferably integral with, the bridge 5 and is provided with vertical slots 7. The upper end of the tubular part 6 is screw threaded and engages the internally screw threaded part 8, the upper portion of which is of a substantially inverted cone shape with a laterally extending flange 10 and is provided with apertures 11.

12 is what may be termed a primary needle valve, engaging a seat in the lower end of the tubular part (5 and'is provided with a hollow stem 13, the upper end of which 18 adapted to seat itself in the secondary valve seat 14 formed in the hollow plug 1'5 secured in said tubular part 6 andprovided at its upper end with a seat for the secoudary needle valve 28. The lower end of the hollow valve stem is reduced and the reduced portion is provided with apertures opening into the interior of the stem.

16 1s a flanged valve sleeve mounted on the tubular part 6, the flanged portion normally supporting the primary air valve 17 pr'ovided with apertures 18. Mounted upon the sleeve 16 is a flange washer 19. A pin 20 passes through the sleeve and slots in the tubular part 6 and the stem of the pri mary medle valve, and is adapted to lie within the upturned flange of the washer. Between the valve 17 and the flanged washer, there is disposed the coiled spring under normal compression'between the pri-' mary air valve 17 and the washer 19 by the flange on the sleeve 16 and the'pin 20, passing through the upper end of said sleeve. The combined parts, to wit, the primary air valve, the sleeve 16, Washer 19 and Spring, form a wei ht which tends, to hold the primary needie valve upon its lower seat. l/Vhen, however, suction is created, these connected parts move bodily upward,.carrying the primary needle valve with them, until said valve engages its upper or secondary seat, afterwhich any furtherupward movement of the primary air valve will further compress the spring 21.

22 is an annular shell of substantially the form of the frustum of a cone, shown in the drawing, and is provided with outwardly extending flanges adapted toslidably engage the sides of the main body 1, and an inupper extremity to engage an internally screw threaded support 26, which is a199- provided with exterior screw threads to en gage a similarly screw threaded vertical flange 27, provided in the top of the main body. The threads of the stem 25 and those of the part 26 are of difiercnt pitch, securing i the body of the carburetor except that which a differential action, and the operator is enabled to effect the proper adjustment with the greatest accuracy. The lower end of the valve stem 25 is provided with a secondary needle valve 28, mounted in a socket in said stem adapted to engage a valve seat in the upper end of the plug 15 as shown. he valve stem 25 is flattened or squared at a portion of its length and, said portion is pr0- vided with a vertical slot 29. Upon the flattened or square portion there is movably mounted a slide 30, the lower portion of which is provided with aslot 31 registering with the slot in the valve stem and having an outwardly extending fiangey32.

The top 33 of the main body 1, is provided 1 with a curved slot 34 and a collar 35 is loosely mounted upon the lower portion of the vertical flange 27, the said collar having a screw threaded opening to be engaged by a screw 38, which passes through a collar 39 havinglan arm or projection 40 'loosely mounted on the upper portion of the flange 27, said screw passes through the slot 34 in the top of the main body and is adapted to engage a screw threadcdlbpening in the collar Between the collar 35 and the slide 30 of the valve stem 25, there is interposed a tension spring 42 and the bridge wire 23 passes-through the slots in the slide and valve stem.

43 is torsion Wire, one end of which is secured in the collar 35; the other end of saidtorsiou wire passes loosely through an opening in the flange 19 of the inverted cone shaped part 8, said torsion wire engaging the bridge Wire sliding yoke 44.

45 is a hand wheel keyed to the part 26. The operation of the device is as follows: The fuel enters the carburetor through the herein the base and is controlled the primary needle valve 12, which operates preferably by means of a the tubular part 6, permanently attached 0 ieter.

the bridgev 5, in the base of the cal When suction is created by cranking the gin glue, the primary air valve 17 is raised admitting air into the body of the carbureter through the openings 18 and atthe same time raising the valve sleeve 13, the flange '19 and pin 20 which passes through the stem of the primary needle valve, thus raising said valve and admit-ting fuel which passes through the hollow stem 13 of the primary needle valve, escapes through slots in the valve stem and mixes with the infiowing air Withinthe shell 22, the mixture passing out through apertures 11 above the secondary valve shot. This forms the priming or initial charge forthe engine, but as the engine con-' tinues to move, greater suction is created aud t he primary needle valve is carried up until it seats itself at 14, thus closing the slots T, after which no fuel. can escape into passes the secondary valve 28. Should additional upward pressure be exerted on the primary air valve by increased suction, the spring will be compressed, permitting said valve to yield upwardly while still holding the upper end of the primary needle valve in engagement with its upper seat 14. T he secondary valve 26 is mounted in a socket in the lower end of the valve stem 25. In the meanwhile a proper amount of twist has been given the torsion wire 43, by turning the handle 40 of the collar 39, said twist being maintained by the screw 38. As still greater suction is created, the shell '22 is a will be noted that under a light draft,

or suction through the throttle, the shell 22 forms the mixing chamber and under increased draft or suction, the space within the main body above the shell, becomes the mixing chamber.

What we claim and desire to secure by Letters Patent is: I

1. In a carburctcr, provided with air inlet and mixture outlet, and fuel inlet adjacent to the air inlet, a primary air valve for said air inlet, a primary fuel'valve for said fuel inlet, a secondary air valve within the carbureter forming a prelin'iinary mixing chamber adjacent to th'e primary inlet valve, the carburetor being provided with a passage for the mixture from said mixing chamber r lid secoildary air valve and the mixture oulln zfmeans connected with the rimary air inlet valve for preventing the a mission oi": fuel by the primary fuel inlet. valve during heavy suction, and means actuated by the secondary air valve for opening the secondary fuel inletvrilve.

2. ln a carburetor provided with an air inlet and a mixture outlet, of an air inlet valve, :1 fuel inlet adjacent to the air inlet and a. fuel inlet valve therefor, u secondary air valvbi interposed between the air inlet and mixfiiireoullel, and forming a prelim inary mixing chamber, said carbureter being provided with a passage independent of the secondary air valve from said preliminary mixing chamber to the mixture outlet, a

prii'nary inlet valve controlling thesupply of fuel to the preliminary mixing chamber,

said carburetor havinga passage from the I primary fuel inlet valve to the preliminary "a the outlet, independent of said secondary vfilvnf, a secondary fuel valve, between mixing chamber a part connected with the primary fuel valve for closing said passage, connections between the air inlet valve and the primary fuel valve for operating the latter, a secondary fuel inlet between the secondary air valve and the mixture outlet, and o )erative connections between'the said secondary air valve and the secondary fuel valve.

3. In a carbureter provided with an air inlet, and mixture outlet, and a fuel inlet adjacent to the air inlet, a secondary air valve providing a preliminary mixing chamber between it and the air inlet, said carburetor having a passage connecting said preliminary mixing chamber with the outlet, independently of said secondary air valve, a primary air valve for the. air inlet, a primary fuel valve, a yielding connection between the air inlet valve and the primary fuel valve, means for arresting the primary fuel valve, when moved by the primary air valve, whereby the primary air valve may be moved by increased suction with respect to theprimary air valve, a secondary fuel inlet between the secondary air valve and the mixture outlet, a secondary fuel valve controlling the same and connections between the secondary air valve and the secondary fuel valve.

4. In a carburetor the combination with a, casing having an air inlet aperture adjacent to one end and a mixture outlet adjacent to the other end, a liquid fuel inlet adjacent to the air inlet, and located centrally thereof, a primary needle valve normally closing said fuel inlet, and provided with a longitudinal fuel passage, a primary air valve for the air inlet connected with said fuel valve and holdingv the latter normally in closed position, a stationary part located above the needle valve, separated therefrom when the valve is in normal position, said part having av longitudinal passage to register with that in the said valve, a secondary air valve forming a preliminary mixing chamber adjacentto the primary air and fuel valves, said carburetor having a passage from the preliminary mixing chamber to the outlet independent of the secondary air valve, a secondary fuel valve normally closing the longitudinal fuel passage in said stationary part, and operative connections between said secondary air valve and said secondary fuel valve.

5. In a carbureter, the combination with air and fuel inlets, of valves for normally closing the same, a passage through said fuel inlet valve, an additional fuel passage at one end of said fuel inlet valve in line with the passage in said alve, but separated therefrom, a supplemental fuel valve for said additional passage, and means whereby a heavy draft or suction will bring the inlet valve in connection with the said additional fuel passage and actuate the supplemental fuel valve to increase the fuel supply.

5. In a carbureter, the combination with air and fuel inlets, of valves normally closing the same, the said fuel inlet valve having a passage therethrough, an additional air valve of the form of a frustum of a cone, means for moving said fuel inlet valve to discharge within the said additional air valve under light draft, and means for causing said fuel inlet valve to discharge in the body of the carbureter above the-said additional-air valve under heavy draft or suction.

7. In a carburetor, the combination with air and fuel inlets, of valves normally closing the same, but adapted'to be opened by light draft or suction, of a supplemental fuel valve, an additional air valve operable by a heavy draft or suction to admit a greater amount of air, and means connecting said supplemental and additional valves whereby a movement of said additional air valves will move the supplemental fuel valve to admit a greater amount of fuel.

8. In a carburetor, the combination with an additional air valve to admit a greater flow of air under a heavy draft or suction,

.of a supplemental fuel valve having a.

slotted valve stem, said additional air valve being provided with a oke pa'ssin' through said slot of the said va ve stem, and for turning said'additional air valve and yoke to turn said valve stem to increase the amount of fuel when said additional air valve is moved. I 9. In a carbureter, the combination with the additional air valve to admit a eater flow of air under heavy draft or suction, of a supplemental fuel valve having a slotted stem, supported by a threaded connection with the main body of the carburetor, said additional air valve being provided with a yoke passing through the slot of the supplemental valve stem and means to turn the additional'air valve and its yoke when said valve is moved, to cause the threaded c0nnection of the said valve stem'to raise said stem and valve.

10. In a carbureter, the combination with primary air and fuel inlet valves adapted to be operated by light draft or suction, of an additional air valve to admit a greater flow of air tinder a heavy draft or suction, a su plemental fuel valve, supported by a threa ed connection of its stem with the main body of the carburetor, said additional air valve being connected with the supplemental fuel valve by means whereby a movement/0f the additional air valve will turn the supplemental valve stem to cause its threaded connection to increase the supply of fuel, and means to vary the extent of the movement of the supplemental valve from like movemerits of the said additional air valve.

ameans.

11. In a carbureter, the combination with 1 means whereby the chamber above the said primary air and fuel inlet valves to be opi additional valve ismade the mixing chamerated under light draft or suction, of an adher under heavy pressure. ditional air valve adapted to be operated In testimony whereof we afiix our signa i:

5 under heavy Clliflft or suction, means whereby i tures, in the presence of two witnesses.

said additiona air valve forms a chamber above the same, discharge passages for the primary air and fuel valves whereby the interior of the said additional air valve is i Witnesses: 10 made the mixing chamber under a. light E. B. DAULTON,

draft or suction, and further discharging CHAS. T. GIESENBERG.

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