US988800A - Carbureter. - Google Patents

Description

J. A. MoHARDY & (LA. POTTER.

OARBURETEB.

APPLICATION FILED SEPT. 10 1908.

Patented Apr. 4, 1911.

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8 INVENTORS. JHME3-H 41 64980)" WITNESSES W8 Parrse 8 ATTORNEY Cf/HBLES J. A. MoHARDY & C. A. POTTER.

OARBURETER. APPLICATION FILED SEPT. 10, 1908.

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Owens 9. Porrse W By ATTORNEY Patented Apr. 4, 1911.

UNITED STATES RHODE ISLAND, A CORPORATION OF MAINE.

Specification of Letters Patent. Application filed September 10, 190a.

Patented Apr. 4, 1911. Serial No. 452,508.

To all whom it may concern: I

Be it known that we, JAMES A. MCHARDY and CHARLES A. Forum, citizens of the United States, residingat the city of Pr0vidence, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Carbureters, of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to carbureters of the class employed for vaporizing hydrocarbon oil "as it is fed to an internal conibustion engine, and the object of the invention is 'to control the flow of the mixture through the carbureter and automatically increase or decrease the proportion of air at a predetermined ratio operation of a single valve.

It is an understood fact in the operation of motor car engines, that as the speed increases the percentage of gas required to economically operate the same decreases and the percentage of air increases in a given ratio, the reverse taking place as the speed is reduced, the slower the engine runs the richer the mixture required.

In carrying out our invention with the above in view, we have arranged an auxiliary air inlet and a vapor inlet side by side so that they may be controlled by one valve. The port in the vapor inlet is made substantially in a tapering form and arranged to exactly pro ortion the vapor to the amount ofair admitted through the auxiliary air port, so that a proper and most economical mixture will be had at all times and at all speeds of the engine. An auxiliary a erture is also formed through the valve nto the vapor port so that when the valve is nearly closed the engine will receive a mixture of suflicient richness to enable the same to run very slow. The size of this port may be controlled by an adjusting screw to suit different enginesand to 'run under the varyunder which the on to operate.

It is ound in practice that when a car is running alongon a slight angle or when going up or down hill, or when thrown from side to side in traveling rapidly over a rough road, that the float in the carbureter often times becomes stuck and will not operate mg conditions same maybe called u properly. obviate this difliculty we have to the gas by the provided a long pivoting spindle of considerable length WlllCll has its hearings in adjustable screws located one in either side of the float chamber, by which construction it is impossible for the float under the most trying conditions to get out of alinement or come jammed in its bearings.

In order to facilitate the starting of the engine a circular feed well is formed around the mouth or lower portion of the draft flue so that when the float chamber is flooded by raising the inlet valve thegasolene will flow out of the supply nozzle, run down the side walls and fill up this circular well, whereby all of the air as it enters both ports in being drawn in to start the engine comes in contact with and becomes highly charged with the gasolene from the well, thus senting a rich mixture to the cylinders enabling the same to start with great ease. After the engine is started the gasolene is sprayed into the entering air from the supply nozzle as it is being drawn into the cylinders.

lVith these and other objects in view, the invention consists of certain novel features of construction, as will be more fully described and particularly pointed out in the appended claims.

In the accompanying drawings: Figure 1 is a central sectional side elevation of our improved carbureter. Fig. 2- is a top view of the float chamber with the top cap removed. Fig. 3 is a plan of the valve seat with the valve and retaining plate'removed. Fig. 4- is a plan view of the valve seat with the valve in position thereon. Fig. 5- is a plan of the sliding valve. Fig. 6- is a detail showing the float hinge and yoke for engaging 7- is a detail showing a portion of the float and its connection to. the valve s indle. Fig. 8 is an end view of the sli ing valve. Fig. 9- is a detail of a tubular ringshaped wire coil.

' Referring to the drawin s shaped float chamber, an

at 1 is a bowl 2 desi na-tes a pipe or tubular portion exten ing 11 through its center to form a draft flue. This flue is divided by means of the partition 8, one side 4 being entirely free for the admission of air, while in the op osite side supply nozzle 5, w ich is at tached to the wall of the tubular portion prethe inlet valve splndle. Fig.

23 of the valve spindle may be raised by the j v .esaeoo The lower end of this nozzle communicates semi-circular form, whilethe vapor side 33 throu ii the passa' e 6 into the float chamis partially closed by said tapering bridge ber, t e upperen being provided with a whereby the proportion of vapor admitted reduced outlet 7 into which a regulating through this port grows gradually less as 5 needle 8 is adapted to fit, so as'to contro compared with the air. By this arrange- 7c the supply therefrom. The inlet'passage 9 mentthe mixture is positively controlled to the float chamber is controlled by a valve and regulated so that the faster the engine 12 carried by a spindle 10, the lower end of runs the greater the proportion of air to a which is reduced at 11 to enter-said inlet that of thegasolene, the percentage being in 1 and form' a guide, the upper portion of a fixed ratio.

this spindle beingsupported in the guide In order that the engine may have mixboss 25. This spindle valve is actuated by means of a float 13,which may be constructs ed of cork, orany other suitable mate 1 rial, said float, being pivoted at 14 on the hinge rod 15, which rod'receives its bearings in the recesses 164-16 in the ends of the screws 17-17. These screws arethreaded through-bosses 18 in the sides of the float chamber and may be adjusted and set in the proper position and also regulated to take up the wear of the hinge rod so as to always insure a perfect working of the float. Another feature of this construction is that the hinge is so ver lon extending from side to side of the oat c amber, that it is impossible for the same to get out of order, or become jammed, or bound, so that the float will not work properly even when the car is tipped up at an acute angle when going along the side of a hill, or up and down'steep inclines, or from any shock or jar which might be caused by rapidly running the car over rough roads.

A double armed yoke 19 constructed of thin material having forked ends 20 extends out laterally from the float to engage both the upper and lower faces of the collar 21 on the spindle 10, so that when the gasolene is at the required height in the float chamber the float will rise and close the valve 12 and prevent the gasolene from further entering the chamber only as fast as the same is drawn therefrom. A small bolt 22 is passed through hese arms and is adapted to be set up to bring the arms toethervand take up the wear on-the faces which work against said collar. p

In priming the carbureter the upper end run at a veryslow speed, a hole 35 has been provided through the valve which is adapted to communicate through into the vapor ort when the valve is nearly" closed. The" end of an adjustable screw 36 is adapted to enter said hole from the end of the valve and regulate its size so. that the carbureter ply exactly the necessary quantity of vapor to control the speed of the same.

The needle valve 8 is threaded at 38 and provided with a head 37 so that its point 39 may be adjusted to nicely regulate the flow ofhydrocarbon through the supply nozzle 7 A top plate 40 having a central outlet pipe 41. is designed to cover the valve and valve channel and is threaded on its outer end onto which the engine supply pipe is connected.

One of thegreat draw-backs in the use of gasolene engines is the fact that oftentimes considerable difliculty is experienced in trying to crank or start the same, which dii'fi- 1 'culty is largely due to th fact that the cylin- -ders do not receive a mixture rich enough to ignite readily. To obviate this difficulty and provide a mixture of suflicient richness for this purpose a circular well collar 42 is 1 attached, by soldering, screws or other suit able means, to the lower end of the float chamber 1 and arranged to surround the central draft flue 2 through said chamber, leaving a narrow aperture 43 through which 1 the asolene is drawn from the circular cham er 44 within the collar by the suction of all of the entering air, there y providing a mixture of suflicient richness to enable the It is found in practice that the air drawing rapidly up through the flue 4 over the slotted portion 43 causes a whistling sound which is objectionable, and in order to obviate this noise a wire 45 wound helically in 1 a tubular form and bent in a circle,-in the manner illustrated in Fig. 9, is inserted into the circular. chamber 44, thus breaking up the rapid circulation of the air currents throng said chamber and efiectually stops the noise.

thumb and finger, the stop 24 serving to prevent an excess upward motion of t e same. A cover plate or head 26 is'secured to the upper portion of the float chamber 55 by means of the screws 27 and in this plate is formed a channel or valve seat 28 in which the throttle valve 29 is adapted to be moved back and forth through the outwardly extending pin 30. The limit screws 60 30" and 31 control the stroke of the-valve in bothdirections. essential feature of v v thisyalve seat is that the port therethrough The operation of our improved carbureter is divided by a. substantially wedge-shaped. may be more fully descr'bed as follows: In br dge 31, the air inlet side 32 of said port starting the engine the float chamber to the 65 being unobstructed and substantially in a carbureter is flooded by raising the end of ture of suflicient richness to enable it to may be adjusted to different engines to sup- 85 I engine tobe started without difliculty. 115 j ass,soo

the valve spindle 23, allowing the gasolene to run out of the jet nozzle 7 and down the side walls of the tub around the metal and finally fills the circular well 44 around the lower end of the air flue. As the engine is then turned over all of the'air drawn in is highly charged with the gasolene'vapor presenting a rich explosive mixture to the cylinders, enabling the engine to be started with greatest ease.

' Both the air and the gas ports are arranged side by side and controlled by the action of a single valve, the shape of the vapor port in said valve being carefully figured out and fixed so that both the air and the vapor openings are at all times in exactly the proper ratio one to the other, insuring the proper mixture in the cylinders at all speeds from the highest to the lowest.

It is obvious, that the vapor for the mixture is obtained by the currents of air passing around the nozzle 5 as the latter discharges the hydrocarbon.

By the use of this device an engine is adapted to run at any speed from the very lowest to the very highest with the greatest possible economy.

he device is very simple and practical in construction and extremely etlicient in its operation and by its use the efficiency of the hydrocarbon engine is greatly increased.

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

1. A carbureter comprising a hydrocarbon reservoir, a flue extended therethrough, a partition extending longitudinally through said flue to form an air passage and a carbureted air passage, means for supplying hydrocarbon vapor to the latter passage, and a single valve controlling both passages simultaneously, said partition being pro vided with means cooperating with said valve for permitting the flow of air and vapor tovary in a predetermined ratio, said valve having a port communicating w1th the carbureted air passage when nearly closed.

2.'A carbureter comprising a hydrocaron reservoir, a flue extended therethrough, a partition extended longitudinally through said flue to form an air passage and a carbureted air passage, means for supplying hydrocarbon vapor to the latter passage, and a single valve controlling both passages simultaneously, said partition being provided with means cooperating with said valve for permitting the flow of air and vapor to vary in a predetermined ratio, said valve belng provided with an auxiliary port arranged to communicate with the carbureted air passage when the valve is nearly closed.

3. A carbureter comprisinga flue, a partition extended longitudinally therethrough to form air and carbureted air passages, a

e where it follows feed nozzle located in the carbureted air passage, means for regulating the flow through said nozzle to produce the maximum engine speed, a slide valve operating across said flue and provided with ports controllin said air and hydrocarbon passages, 81K adjustable means for regulatin the flow of b an air passage and a carpassage, means for supplying hydrocarbon vapor to the latter passage, and a single valve controlling both passages simultaneously, said partition being provided with means cooperating with said valve for permitting the flow of air and vapor to vary in a predetermined ratio, said valve being also provided with an auxiliary port arranged to communicate with the carbureted air supply, and means for regulating the size of said auxiliary port.

carbureter comprising a hydrocarbon reservoir, a flue extended therethrough, a partition extending longitudinally through said flue to form an air passage and a carbureted air passage, provlded with adjacent outlets separated by a tapered bridge, means for supplying hydrocarbon vapor to the carbureted air passage, and a valve provided with a single port for simultaneously controlling both of said outlets, whereby the flow of air and hydrocarbon is varied in a predetermined ratio.

7. A carbureter comprising a hydrocarbon reservoir, a fine extended therethrough, a partition extending longitudinally through said flue to form an air passage and a carbureted air passage provided with adjacent outlets separated by a tapered bridge, means gle port arranged for supplying hydrocarbon vapor to the carbureted air passage, and a valve provided with a single port for simultaneously controlling both of said outlets, said valve being also provided with an auxiliary port arranged to communicate with the carbureted air supply.

8. A carbureter provided with a draft flue, a fuel receiving well provided with a chamber encircling said flue whereby the engine,

breaking up lthrough the same being ma entering air vaporized fuel to facilitate star-ting the and means in said chamber for the, air currents circulating, to prevent a noise from de by the ai entrance to said Well. a p

9. A carbureter provided with a draft flue, a fuel receiving well provided with a chamber encircling said flue whereby all of the entering air may be highly charged with vaporized fuel to facilitate starting the enmay be highly charged with! gine, and

r'passing rapidly by the 7

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