US976344A - Carbureter. - Google Patents

Description

S. GHRISTOFFBRSON, N. T. WOODS & W. E. JONES.

CARBURETER.

APPLICATION FILED DBO.30,1909.

2 SHEETS-SHEET 1.

Patented Nov. 22

S. UHRISTOPFERSON, N. T. WOODS & W. E. JONES.

CARBURETBR.

APPLIOATION FILED DEO.30,1909.

Patented Nov. 22, 1910.

2 SHEBTBSHEET 2.

WITNESSES;

SW06. W moss m V0.0 N M w W M a M nfb X n {m L SILAS CHRISTOIFFERSON, NELSON r. woons, AND WILLIAM E. JONES, or PORTLAND, OREGON, ASSIGNORS TO CHRISTOFFERSON-WOODS CARBURETOR (10., or PORTLAND, OREGON, A CORPORATION or OREGON.

GARBURETER.

Specification of Letters Patent. Patented N 22, 1910, Application filed December 30, 1909. Serial No. 535,617.

To all whom it may concern: I

. Be it known that we, SILASHGHRISTOFFER- soN, NELSON T. WVoons, and TVILLIAM E. JoNEs, all of Portland, in the county of Multnomah and State of Oregon, havev invented certain new and useful Improvements in Carbureter s, ofwhich the following is a specification.

Our invention has for its object to'provide a carbureter of an improved construction wherein the parts are designed and cooperate to automatically regulate the supply of air and gasolene according to the running speed of the engine.

The invention also providesa carbureter which will operate under a maximum efliciency, both at high, low and intermediate speeds, and which will operate with less throttling resistance than with other types of carburetors.

.The invention also has for its ob ect to provide an improved air controlling valve and mixing .cha'mberincluding means to as sist said valve in starting, and means to prevent pounding of the valve during rapid regulation.

The invention also resides in those novel details of construction, combination and arrangement of parts, all of which will be first fully described, and then be specifically pointed out in the appended claims, reference being hadto the accompanying drawings, in which Figure 1, is'a central vertical longitudinal section of the invention, the parts being in theirnon-running position in full lines and their fastest running position with the air valve giving maximum air supply-in dotted lines. Figs. 2, 3 and 4, are horizontal sections'respectively on the lines 2-2, 3 3 and 44 of Fig. l.

Referring now to the accompanying drawings, in which like letters and numerals indicate like parts in all of the figures the earbureter casing consists of an outer wall 1 an inner wall 1 concentric therewith, and an inner wall 1 of frustoconical form that joins the walls 'l l at the bottom. The walls 1 l"l form a float chamber which is open at the top but closed by an annular ring 6 to leave a central passage through the casing.

The ring 6 i s heldcin place by a cap that is threaded into the casing 1 at fl and bears 'ing threaded portion 2,

01 1 the ring 6. The cap 2 is formed with a pipe section 2 that projects through the cap 2 into the central passage of the casing 1 and-1s formed with an upwardly projectto receive the high speed adjustment nut 4 and the union member 3, as clearly shown in the drawings.

The pipe section 2 has its lower end inter-- nally coned or beveled as at 2 and is also provided with shoulders 2 for a purpose hereinafter to appear. That' part of the pipe 2 that projects through the cap 2 has its walls of less thickness as'at 2* than the.

remaining portion that projects above the cap 2, so as to provide the shoulder 2" above referred to and form a guide for the air.

valve 28 hereinafter again referred to.

5 is the throttle valve which operates in the pipe 2? and is held in itsnormal posi tion by a screw 5 that prdjects through an arm 5 on the valve stem and the manual movement of the valve 5 is effected through a lever 5 that is moved in any desired manner.

Within the float chamber of thecasing 1 afloat 7 is held, the float 7 being connected to a lever 10 that is pivoted on a pin 11 that passes through the side walls of a projectlon 1 of the casing, the projection 1 formmg a chamber for the needle valve 14*. The va ve 14 is carried on 1 a stem 14 that is threaded at 14 to receive a sleeve 13 and a jam nut 15, the sleeve 18 connecting with the arms'12 of the lever 10 that carries the float 7 as shown in the drawings. The valve 14 has a guide pin that projects through the aperture 1 in the nipple l of the casing 1. A nipple 16 is connected to the nipplel by a collar 17, as shown in Figs. 1 and 2,. of the drawings.

18 is the priming lever that is pivoted on a bracket 9 whichis held in place by abearing nut 8 that threads into the projection I of the casing and has a bearing for the stem 14: of the valve 14, the priming lever 18 having operative engagement with. the stem 14, as shown so that in starting,l the valve 14 may be manually opened, it necessary. .19 is the gasolene supply valve casing which has an internal bore, partly closed near itsupper end by a web having a valve passage 19, the upper end ofthe valve casmg 19 being cupped at 19 to form a reservolr for the gasolene. Within the valve casber 7 0 the valve casing 19 by pi cs 20 that are f rmed, in practice, with the casing 19and w ture for conveyingl float chamber to t e interiorof the valve casing 19, as clearly shown in'Fig. 4 of the drawlngs, the pipes 20.'also serving as a support for the valve casing 19 andits carried parts.

Threaded on the valve casing 19 is an arm 24 that is held in place by a check nut 25, the arm 24 having upwardly projecting cups pfeferab y integral ich have an aper- 27 secured thereto to receive the coil springs 30, the cups 27 being surrounded by other cups 29 carried by the air' valve 28, the cnips 27-29 and springs 30 forming bufler evi'ces. A coi spring 26 is interposed between the arm 24 and the pipes 20 to hold such arm in engagement with the adjusting nut 25, it being understood that the arm 24 is not threaded on the casing 19, as-is the nut 25. A valve seat 22 rests on the pipes 20 and is supported by the stem 19 as well,

the valve seat 22 havin cut-away portions 22 to permit passage 0 the cups 27 and 29, and said valve seat 22 is held 1n place by a cone 21 threaded on the casing 19 and engaging the seat 22. r

The air'valve 28 has an annular flange 28" which has an air passage 28 cooperating with the cone 21 and a tubular portion 28 that receives the rojectin part 2 of'the pipe 2 and the va ve 28 is urther provided with projections 28 that carry sprmg'cups 31' in which balls 32 are held, the balls 32 being pressed to the open end of the cups 31 by a plunger 33 and a coil spring 34, as shown in drawings, the balls 32 are adapted to engage the high speed adjusting nut 4 when the valve 28 has opened to its greatest limit. Ordinarily the valve 28 does not rest on the seat 22 in practice, as it is advisable always to have'the air passage partly open. However, when desired, the nut 25 (see Fig. 1) may be unscrewed or lowered until the flange 28 will rest on the seat 22.

Operation: The

lows: Assume-the parts to be positioned as shown in Fig. 1, with the gasolene at its normal level, as shown, and it is desired to-start up the engine.

The operator opens the'valve 23 the desired amount to permit the. gasolene to flow into the cup 19". He then opens pipe 2? into the engine cylinder the air'causthe gasolene from the-- manner in which our invention operates 1s best explained as 1501- the valve 14 at the priminglever'18 to permit the gasolene to flow irito the'cup 19". Upon cranking up the engine the air will. be sucked through the valve passage 28 'and ing-the gasolene in the cup 19 to be va or- 1zed and commmgled'with the air to o'rm the working mixture. The conical forma-t tion of the member 21 and its relation to the passage 28 insures the air to pass on all sides around the gasolene'cup 19 and form,

as it were, a sheave or inclosu're of air around the gasolene cup, thus insurin'g'an abundant supply of air to the gasoleneat all times. 'As the engine starts up the suction caused by the engine in drawing in its char es'will cause the valve 28 to rise from the ull line position shown in Fig. 1,11 I,

ward the dotted lineposition shown in Fig;

1, it be'ing understood that at the commence;

-ment of the rising movement of the valvef23 the. springs 30 will assist such movement as the position shown in Fig. 1. .As the engine starts up the valve 28 will rise more and more, ope'ningthe passage 28 degree. Owing to the cone member 21v the opening of and gradually increased as the valve 28 rises. As the engine reaches its -maximum speed the balls 32 will engage the ring 4 and stop they are intended-to balancethe valve 28 in v to a greater the valve port 28 will be steadily the upward movement of the valve 28 after the balls 32 have been depressed .until the upper rims ofthe members 31 engage the ring 4, it being understood that the balls 32, piston 33 and spring 34 serve as shock absorbers or buffer devices to prevent ounding of the valve 28 when the engine 1s running at maximum speed. Upon the engine slowing down the reverse of the foregoing operations will take-place until the parts are restored to the full line position shown in Fig. 1 of the drawings.

It should be understood, in operation the throttle valve 51s controlled in the usual manner to control the passage through the p p 1 w From the foregoing description taken in connection with the accompanying drawings it is thought the complete construction, operation and many advantages of'our invention will be understood by those skilled in the art to which it appertains. 1

What we claim is 1. A carbureter comprising a casing having acentral passage and inclosing a float chamber, a float withinsaid float. chamber,

said casing I lever pivoted in said extension, a valve in said extension cooperatively connected with said float lever,'means for admitting asolene through said valve into the float c am: her, a'cap for said casing-having a central pipe member. projecting into said central passage, a tubular air valve carried oil-sa d having an extension and a float pipe member, .a gasolene valve mounted -within the central passage of said casing, pipes connecting the casing of said gasolene valve with said floatchamber, said air valve having a passage to permit projection of moves.

pipe member, a tubular air valve carried on said pipe member, a gasolene valve mounted Within the central passage of said casing, pipes connecting the casing ofsaid gasolene valve with said float chamber, said air valve having a passage to permit projection of said gasolene'valve casing'means carried by said gasolene valve casing cooperating with said air valve to vary the areaof said air valve passage as said air valve, moves, a seat for said air valve carried by the casing of said gasolene valve, and resilient members for supporting said air valve when in itsinoperative positlon',

3. 2r carburete'r comprising a casing having a central passage and-'inclosing a float chamber, a float within said float chamber, said casing having annextension and a float lever pivotedin said, extension,'a valve in said extension coiiperatively connected with said float lever, means for admitting gasolene through said valve intothe float chamber, acap for said casing having a central pipe member, a tubular. a1r valve carried on said pipe member, a gasolene valve mounted within the central passage of said casing, pipes connecting the casing of said gasolene valve with said float chamber, said air valve having a passage topermit projection of said throttle valve casing, means carried by said gasolene valve casing coiiperating with said air valve to vary the area of said air valve passage as said air valve moves, and means for resiliently supporting said air. valve and limiting its movement in one direction.

4. A, carbureter comprising a casing havinga central passageinclosing a float chamber, 'a float Within said float chamber, said casing having an extension and a float lever pivoted in said extension, a valve in said extension cooperatively connected with said float! lever, means for admitting gasolene 'throu hsa id valve into the float chamber, a cap or said casing havinga central pipe member, a, tubular air valve carried on said pipe member, a gasolene valve mountedwithin the central passage of said casing, pipes connecting the casing of said gasolene valve with said float chamber, said air valve having a passage to permit projection of said gasolene valve casing, and means carried by said gasolene" valve casing cooperating with said a1r valve to vary the area of said air valve passage as sa1d a1r valve moves, and

means for resiliently supporting said air valve and limiting its movement in one direction together withmeans for limiting the movement of said air valve in an opposite direction.

5. A carbureter comprising a casing having a central passage inclosing a float chamber, a float within said float chamber, said casing having an extension and a float lever pivoted in said extension, a valve in said extension coiiperatively connected with said float lever, means for admitting gasolene through said valve into the-float chamber, a cap for said gasolene having a central pipe member, a tubular air valve carried on said pipe member, a gasolene valve mounted within the central passage of said casing, pipes connecting the casing of said gasolene valve with said float chamber, said air valve having a passage to permit projection of said gasolene valve casing, means carried by said gasolene valve casing coiiperating with said air valve to vary the area of said air valve passage as said air valve moves, means for resiliently supporting said air valve and limiting its movement in one direction together With means for limiting the movement of said air valve in an opposite direction,

"' said l-astnamed limiting means including buffer devices.

G. A carburetor comprising a casing hav ing an outer wall and an inner wall inclosing a float chamber and providing a central passage through said casing, said casing being open at the top, a ring closing the opening to said float chamber at the top, a valve,

,a float in said float chamber cooperatively connectedwith and controlling said valve, a. gasolene valve' and its casing mounted in said central passage, pipes connecting said gasolene valve casing with said gasolene chamber, a cap for said casing, a pipe proj'e'cting through said cap, a cylindrical air valve embracing said pipe and having an annular flange at one end, said flange having a passage, a valve seat for said air valve supported on said g'asolene valve casing, and buffer devices beneath said air valve to hold it in its inactive position.

7. A carburetor comprising a casing having an outer wall and an inner wall inclosing a float chamber and providing a centralpassage through said casing, said casing be ing open at the top, a ring closing the open ing to said float chamber at the t0p, a valve,

awgasolene. valve and its casing mounted in said central passage, pipes connecting said gasolene valve casing with said 'gasolene chamber, a cap for said casing, a pipe proj'ecting'through said cap, a cylindrlcal air valve embracingsaid pipe and having an annular flange at one end to leave a passage, a valve seat for said air valve supported on said gasolene valve casing, and means for assisting said air 'valve to move at the commencement of its movement.

w 8. A carbureter comprising a casing having anouter wall and an inner wall 1nclosing a float chamber and providing a central passage through said casing, said casing being open at the top, a ring closing the opening to said float chamber at the top, a valve, afloat in said float chamber cooperatively connected with and controlling said valve, a gasolene valve and its casing mounted in said central passage, pipes connecting said gasolene valve casing with said gasolene chamber, a cap for said casing, a 1pc projecting through said cap, a cylm rical air valve embracing said p1pe and having an annular flange at one end'to leave a passage, a valve seat for said all valve supported on said gasolene valve casing, means tor assisting said air valve to move at the commencement of its movement,=said last. named means comprising a plate mounted on said gasolene va ve' casing, telescopic members joining said plate With said an valve and means within said telescopic members continuously tending to separate the same.

9. A carbureter comprising a casin having an, outer wall and'an inner wall moles-- ing a float chamber and providing a central assa'ge through said casing, said casing being open at the top, a ring closingthe open-- ing to said float chamberat the top, a valve,

.a float in said float chamber coiiperatively connected with and controlling said valve, a gasolene valve and its casing; mounted in said central passage, pipes connecting said gasolene valve casing with said gasolene chamber, a cap forsaid casing,.a ipe' projecting through said cap, a cylin r cal airvalve embracing said pipe' and having an annular flange at one end to leave'a passage, a valve seat for said air valve sup orted in said gasolene valve casing, means or assisting said air valve to move at the commencement of it movement, said last named means comprising a plate mounted on said .gasolene valve casing, telescopic members joining said plate with .said air valve, means within said telescopic members continuously tending to separate the same, and-means for limiting the movement of said'air valve in one direction.

10. A carbureter comprising a' casing having an outer wall and an inner wall lnclosinga float chamberand providing a central passage through said casing, said casing befluid chamber, means for controllin ing open at the top, a ring closing the opening to said float chamber at'the top, a valve,

a float ,1n said float chamber cooperatively connected with and controlling said valve, a-gasolene valve and itscasing mounted in said central passage, pipes connecting said gasolene valve casing with said gasolene chamber, a cap for said casing, a

valve embracing said pipe and having an annular flange at one end to leave a passage, a valve seat for said air-valve supported on said gasolene valve casing, means tor assisting said airvalveto move at the commence-v ment of its movement, said last named means comprising a plate mounted on said 'gasolene valve casing, telescopic members joining said plate with said air valve, means within said to form a continuation of said pipe member and control the passage of air therethrough.

12. In a carbureter, 'a casing inclosing a the admission of fluld to said chamber, said casing having a central passage, a pipe member projected into said central passage and forming an outlet therefor, agasolene valve I mechanism projected into said central pas sage to dischargeinto said pipe member, an air valve having a tubular portion to form a continuation of said pipe'member and con trol the passage of air therethrough, an means carried by said gasolenevalve mechanism and coiiperating with said air valve P-P 9"- ecting through said cap, a cy rlcal air to vary the area of the air passage therethrough. v

13. In a carbureter, a casing inclosing a fluid chamber, means for controlling the admission of fluidto said chamber, said casing having a central assa'ge, a pipemember projected into said central passage and forming an outlet therefor, a gasolene valve mechanism projected into said central passage to discharge i'to said pipe member, an air valve having-a tubular-portion to. form a continuation of said pipe member and control the passage of air therethrough,

- said air valve being movable on said pipe member, and bufier devices for arrest-ing the movement of said air valve.

- 14 111 a carbureter, ajcasing mclosing' a fluid chamber, means for. controlling the aderases i'nission of fluid to said chamber, said casing hav ng a central passage, a pipe member pro ected llltOSfiJCl central passage and forming an outlet therefor, a gasolene valve mechanism projected into said central passage, to discharge into said pipe member, an air valve having a tubular portion to form a continuation of said pipe member and con trolthe passage of air therethrough, means carried by said gasolene valve mechanism and cooperating with said air valve to vary the area of the air passage therethrough,

said air valve being movable on said pipe" member, and buffer devices for arresting the movement of said air valve.

15.111 a carbureter, a casing inclosing a fluid chamber, means for controlling the admission of fluid to said chamber, said casing having a central passage, a pipe member projected into said central passage and forming an outlet therefor, a gasolene valve mechanism projected into said central passage to' dischargeinto said pipe member, an air valve having a tubular portion to form a continuation of said pipe member and control the passage of air therethrough, said air valve being movable on said pipe member, buffer devices for arresting the movement of said air valve, and means varying the action of said butter devices and limiting the movement of said air valve.

10. In a carbureter, a casing inclosing a fluid chamber, means for 'controllin the admission of fluid to said chamber, said casing having a central passage, a pipe member projected into said central passage, and forming an outlet therefor, a gasolene valve mechanism projected into said central passage to discharge into said pipe member, an air valve having a tubular portion to form a cc-iitimiation of said pipe member and control the passage of air therethrough, means carried by said gasolene valve mechanism and cooperating with said air valve to vary the area of the air passage therethrough, said air valve being movable on said pipe member, buffer devices for arresting the movement of said air valve, and means varying the action of said buffer devices and limiting the movement of said air valve.

17. A carburetor comprising a casing having a pair of annular Walls inclosing an open ended float chambenmeans for admitting fluid into said float chamber, and means for governing the admission of said fluid into saidfloat chamber, a cap for said casing, said casing having a cent :11 passage through the same,

an outlet pipe member for said central passage, a tubular air valve Within said central passage and having a portion forming a cutoif for said central passage, said cut-ofi" portion having anairpass, a gasolen'e valve projected into said central passage and through said air pass, said air valve being longitudinally movable, and means carried on said gasolene valve for varying the area of said air pass as said air valve is moved.

18. A carbureter comprising a casing having a pair of annular Walls inclosing an open ended float chamber, means for admitting fluid into said float chamber, means for governing the admission of said fluid into said float chamber, a cap for said casing, said casing having a central passa e through the same, outlet pipe member t br said central passage, a tubular air valve Within said central passage and having a portion forming a cut--ofi' for said central passage, said outoff portion having an air pass, a gasolene valve projected into said central passage and through said air pass,sa1d air valve belng longitudinally movable, means carried on said gasolene valve for varying the area of said air pass as said air valve is moved, and adjustable bufi'er devices beneath said air valve for arresting the movement of said air valve in one direction and assisting its movement in an opposite direction.

SILAS GHRISTOFFERSON. NELSON T. WOODS. YVILLIAM E. JONES. lVitnesses: NINA E. Woon, JOHN DITGHBURN,

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