US1106226A - Carbureter. - Google Patents

Description

A. G. LAMB.

CARBURBTER.

APPLICATION FILED run, 1a. 1909.

1,106,226, Patented Aug. 4, 1914 ZSHEETS-SHEET 1. CLQxj attamnu S A. G. LAMB.

CARBURETER.

APPLICATION FILED FEB,13,1909.

Patented Aug. 4, 19ML 2 SHEETSVSHEBT 2.

provide acarbureter wherein a small amount SATES PATENT OFFICE.

AMHERST G. LAMB, 0F TORRINGTON, CONNECTICUT, ASSIGNOR TO EXCELSIOR NEEDLE COMPANY. OF TORRINGTON, CONNECTICUT, .A CORPORATION 0F CONNECTICUT.

CARBURETER.

Specification. of Letters Patent.

Application led February 13, 1909. Serial No. 477,800.

To all whom it may concern Be it known that l, Aaiiinns'r (l. Lann, a citizen of thcllnited States, rcsidingat Torrington, in the county of Litchfield, State of Connecticut, have invented certain new and Useful improvements in Carbureters for Explosive-Engines, of which the following is a description, reference being had to the accompanying drawing and to the letters and figures ot' reference marked thereon.

My invention relates to new and useful improvements in carbureters t'or explosive engines, and has for its object to produce a carbureter which shall be simple in construction and durable and efficient in operation.

A further object of the invention is to of air may be supplied directly around the upper end of the nozzle, and wherein a further quantity ot air may be automatically controlled and supplied when the suction stroke of the engine becomes excessive.

A further object of the invention is to provide a 'carbureter wherein the needle valve cont-rolling the tlow through the nozzle is so coupled with the throttle, that when the throttle is operated to open or close the saine, the needle valve is opened or closed a greater distance, thus increasing or decreasing the supply of oil. or gasolene.

A further object of the invention is to provide a carbureter having a nozzle, with mechanically controlled air inlet ports for supplying air directly around the nozzle, and automatically controlled air inlet ports for supplying air at a point above the nozzle.

These and other4 objects will in part be obvious, and will in part be hereinafter' more fully described.

In the drawings, Figure 1 is a vertical section through the parts of the carbureter; Fig. 2 is a sectional view on the line 5-5 of Fig. 1, with a portion of the valve broken away; Fig. is a detail sectional view of the weighted valve; Fig. t is a view partly in vertical section of an alternative forni of my carbureter; Fig. 5 is a top plan view of the controlling stop for the throttle valve; Fig. (3 is a detail in side elevation, showing the controlling lever for the throttle and the stop therefor, with the needle valve controlling member omitted; Fig. 7 is a detail of the central partition and support for thc needle valve, shown in Fig. 7.

The fuel or explosive liquid, is supplied to the carburetor through a supply pipe 1. which extends into the lower end ol a lioat valve chamber 2. A needle valve 3 extends 60 down through the chamber 2, and engages a suitable valve scat in the supply pipe 1. Said chamber 2 is provided with a lloat 4. which engages weighted levers 5, pivoted to suitable lugs. 6, 6, carried by the cap ot' G5 the chamber 2. Said levers 5. at their inner ends engage between suitable collars on, the needle valve 3. This construction of float-operated valve is of the usual 'orm, and further description will not be `necessary. m l

The carbureter 7 proper, is suitably secured, asherein shown, to the chamber 2, and supports at its upper end a chamber 8, in which is mounted the throttle valve. The Y7S carburetcr 7 consists of anv outer easing 9, which is constructed with a cylindrical base 10, into which extends a nozzle 11. The

,casing l) is also provided with a ledge 12,

which serves as a seat for the valve 13.

Suitable openings 14 are formed in the ledge 12, which lead from the inner portion of the casing to the outer air. The base portion 10 extends up into the casing, fern. ing a cylindrical partition 15, whichis lo- 85 cated between the nozzle and the outer casing 9. The partition 15 is provided with a plurality of openings 16, which, as herein shown, are inclined upward, as they lead` to the inner side of the partition. The partition 15 is parallel with the outer casing, and forms a guideway for the weighted valve 13. The weighted valve, 13 is recessed on its lower face, and in said recess is inserted a suitable packing 17. Said packing 17 95 normally rests on the ledge 12 and closes the openings 14. A conical shell or thimble 18 is located-o inside of the cylindrical partition 15, and engages the inner face thereof at a point slightly below the opening 16. Said thimble. as herein shown, is in the shape of the frustrum of a cone, with its open uaper end directly above the nozzle 11, and slig itly larger than the same.

The base portion 10 is rovided at its lower end withsuitable air inlets 19. Said air inlets 19 are controlled by a hand valve ioo 20, which surrounds a stem 21 extending `from the lower portion of the base 10, and is held seated against said base by means of a spring 22, and a nut `23.

ln Fig. 1 l have shown a needle valve 24, extending up through the nut 23 and the base portion 10, into the nozzle 11. SaidV needle valve 24 is of the usual construction, and coperates with the tapered outlet of the nozzle.

The throttle chamber 8 communicates with the 'central opening 25, at the upper ortion of `the outer casing ofV the carureter. .A throttle valve 26, as4 herein shown.I is cylindrical in shape and lits the inner face of the chamber 8. Said throttle valve at its upper end is closed, and carries' an upwardly extending stem 27, which extends through the casing 8, and a suitable operating lever y28 is rigidly secured to the stem 27 by a set screw 29. A stop 30 is secured to the upper part of the chamber 8, andserves as a means'for limiting the movementof the lever 8. The throttle valve 26 is provided with the usual opening 31, which may be brought into register with the opening 32, leading from the carbureter. .Byosu cillating thethrottle valve 26, the opening 32 may be closed more or less, as desired, thus controlling the supply of the mixed vapors to the engine.

A suitable passage 33 leads from the float chamber 2 to the nozzle 11. 'llhe needle valve 24, is bent at right angles'to form a handle 34, whereby said needle valve may be operated.

In the construction shown in Figs. 1 to 7 A inclusive, the float chamber is connected to the carbureter proper 7 as above described,

and said carbureter has a base portion 10 with air inlets 19, which are controlled by a manually operated-valve 20, held'seated against the lower part of the base portion by a spring 22 and a nut 23. Instead or extending the base vportion up into the carbureting chamber, as shown in Fig. 4, I have in this form of my` carbureter, provided a cylindrical partition 35, whiph engages a seat 36, formed in the base portion 10. Said partition 35 is provided with openings 37, which are controlled by the weighted valve 13, which also controls the openings 14- in the supporting ledge of the casing.

The .cylindrical vpartition 35 isq provided with inwardly extending arms 38', 38 which cariyja supporting sleeve 39, in which is mounted a needle valve 40. The nozzle 11 is provided with an inverted conical seat,

vwith,whiclifthe needle valve 40 coperates.

The casing 9 of the carbureter, as shown Lin Fig. 7, extends upwardly and forms a housing for the throttle valve S36, Said throttle valve is cylindrical, and has. the usual cut on` opening 41, which copcrates-` incense which seats against the inner face of the head of the throttle valve, and by means of the screw 46, said rod 44 is -firmly clamped 'to the throttle valve, so' that the same is oscillated with the throttle valve.

At its lower end the rod 44 has a flattened projection 47, which engages between suitable ears 48, formed at the upper end of 4the needle valve 40. The attened projection 47 extends only part Way into the space between the ears 48. As they throttle valve is oscillated one way or the other, the rod 44 will be similarly oscillated, and, through its connection with the needle valve, will operate said needle valve. The connection between the rod 44 and the needle valve, allows the needle valve which is threaded into the collar 39, to move up and down.

When it is desired to adjust the needle valve independently of the throttle valve, the nut 46 is loosened, and the rod 44 may be turned independently of .the throttle valve, by any suitable implement which may engage with the slotted end 49 of said rod 44. The throttle valve is oscillated through the arm 50, which is rigidly secured thereto, and a collar 51 carrying a stop lug 52, cooperating with a stop pin 53, may limit the movement of said arm 50.

In the operation of my device, the fluid for operating the engine is supplied through the float valve to the nozzle, and in starting the engine the auxiliary air ports at the base of the carbureter are closed by manipulating the valve 20. The suction stroke of the engine will draw from the nozzle suitable supply of fluid, which lis mixed with air ad mitted to the carburet'ing chamber through the opening 6, by reason of [the weighted` valve being lifted by the suction stroke of the engine. After the engine is speeued up, the auxiliary air ports 19 are opened, so that a certain definite quantity of air is supplied around the nozzle 11 of .the carbureter, and-the inrushing air passing across the mouth of the nozzle will draw in a certain amount of the duid, which will be thoroughly mixed with the air, and the mixed vapor is supplied to the engine, the amount of the mixture being supplied beingV controlled bythe throttle valve. When the suction stroke ofl the engine isv excessive, the weighted valve will be lifted further, and a greater amount of airwill be supplied through the openings 16.

lin the form of carbureter shown' in Fig. 7 the opening and the closing of the throttle valve to admit more or less mixture -to-the explosive chamber, also controls the position of the needle valve and the amount of fluid supplied to the oarbnreting chamber.

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

1. A carbureter including in combination, an outer casing having a depending base portion and a ledge extending entirely about said casing and forming a valvev seat with openings therethrough leading to the outside of said casing, a nozzle extending into said base portion, a vertical partition forming a continuation of the base portion and extending upwardly into said casing, a thimble carried by sald partition, said partition having openings therethrough above said thimble, and a valve for automatically controlling the air supply through the openings in said ledge.

2. A carbureter including in combination, an outer casing having a depending base portion and a ledge forming a valve seat with openings therethrough leading to the outside of said casing, a nozzle extending` linto said base portion. a vertical partitlon forming a continuation of the base portion and extending upwardly into said casing, a thimble carried by said partition, said partition having openings therethrough above said thimble,' a valve for automatically controlling 'the air supply through the openings in said ledge, other air inlets formed in said base portion, and a manually operated valve for controlling said last named air inlets.

3. A carbureter including in combination,-

an outer casing having a depending base portion and a ledge extending entirely about said casing and forming a valve seat with openings therethrough leading to the outside of said casing, a nozzle extending into said base portion, a vertical partition forming a continuation of the base portion and extending upwardly 'into said casing, a thimble carried by said partition, said partition having openings` therethrough above said thimble, and a valve for automatically controlling the air supply through the openings in said ledge, said valve being provided in its lower face with a recess adapted to receive a packing.

4. A carbureter including in combination, an outer casing, a nozzle extending into said outer casing, normally stationary supporting arms, a sleeve carried by said supporting arms, a needle valve threaded into said sleeve and coperating with said nozzle, a throttle valve, and means located within said casing for connecting the throttle valve with said needle valve.

5. A carbureter including in combination an outer casing, a nozzle extending into said outer casing, a needle valve located within said casing, means for su )porting said ncedle valve including a threaded sleeve, a throttle valve, a r0d,means whereby said rod is secured to the throttle valve so as to turn therewith, said rod having a reduced portion and said needle valve having spaced ears between which said reduced portion extends whereby the movement of Said rod will be imparted to said needle valve. G. A- carbureter including in combination, an outer casing, a nozzle extending into said outer casing, a vertical partition carried by said casing and spaced therefrom, said casing having openings therethrough between the outer portions of the casing and the vertical partition, a valve for controlling said openings, arms carried by said partition, a threaded sleeve carried by said arms, a necdle valve located in said threaded sleeve, and coperating with said nozzle, a throttle valve, and means located within said `casing for connecting the throttle valve with said needle valvef In testimony whereof I ailix my signature, in presence of two witnesses.

AMHERST G. LAMB.

Copies of this patent may be obtained for ive cents each, 'by addressing the Commissioner of Iatents, Washington, D. C.

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