US1140071A - Carbureter. - Google Patents

Description

W. F. ROTHE. CRBURETER. APrLlcATlon msn MAY1.1912.

Patnted 'May 18, 1915,A

2 SHEETS-SHEET 1 EEEE A W. F, BOTHE. {PAREURETEK AFFMCM'IQNHLED HAYA. 1912.

Patente May18, 1915.

winnaar rf. nomen, or msm sr. Louis, Immers.

y l`einen'trascinare .of the city of East St. Louis, in the county of St. Clair and State of Illinois, have invented a new and useful Improvement in Carbureters, of which the lfollowing is 4a specification.

This invention relates to carbureters and more particularly liquid fuel carbureters of the kind used in connection with internal combustion, or explosion engines.

It has for its principal objects the production'of a simpie, eiiicient and easily adjusted device which gives a supply of liquid fuel proportionate to the inflow of-air and controlled by the openingand closing of the throttle valve, and to attain certain other advantages hereinafter more fullv appearing.

The invention consistsin the parts and in the arrangements and combinations of parts hereinafter described and claimed.

In the accompanying drawings, `which form. part of this specification, and where:T -11 like symbols refer to like parts wherever they occur, Figure 1 is a topplan View;

-Fig. 2 is a vertical section on the line y2 2 of Fig. 1; Fig. 3 is a vertical section on the line 3 3 of Fig. 1, an elbow pipe and screen being applied to oneof the air intake opcnings'and the other opening being closed by a cover plate; Fig. 4 is a horizontal section on the line 4-4 .of Fig. 2; and Fig. 5

is a fragmentary perspective view of the 4reciprocatory block which carries the needlevalve, and the cam, whichcoperates therewith.

. .The carbureter shownfin the drawings .openings may be left open, .but in `Cold i weather one of the openings maybe closed opening.

by a cover plate 3 and an elbow or other pipe connection 4 will be attached .to the casing so as to communicate with the other The elbow 4 will be connected to a pipe (not shown) leading from a place inv proximity to the exhaust manifold or any portion of the engine whichradiates heat suflicient -to heat the pipe and thereby heat the airbeforeit is taken into wthe carburet-er. These arrangementsare obvious. Therefore, they are not shownfin the drawings. The openings flare preferably `cov- Speciflcation of Letters Iatent.

'Appueaupn area may 1, 1912. seriai m. 694,392.

Patented tray ia'ieis.

- ered by screens 5 of relatively 511e mesh 'sov as to prevent back fires and keep sand and dirt out of the engine.

The openings 2 communicate with air chambers 6. These air chambers 6 are connected by a .cross passageway 7 and theyv circular disk throttle-valve14 mounted on a I Arock-shaft 15. Thisrock-shaft is provided i' at one end with an operating lever 16,:and has a cam or eccentric 17 fixed on its o ipposite end. The cam 17 is arranged with respect to the,v'al`ve 14 so that when said valve is in closedjpositionA the highest point4 of the cam is vertically below the rock-shaft. A liquid inlet or passageway 181s ,provided in a nozzle member o'r plug 19'secured in a boss 20 at the bottom Aof the extension 21 in which the carbureting chamber 11 is located. The upper endv of thenozzle member 19 is preferably made conical, as shown, so that the liquid may flow in alldirections from the mouth of the passageway 18.

The passageway 18 is controlled by a needle-valve 22 which is slidably fitted in a vertical bore in the partition. wall 23. .The upper end portion of the needle-valve is screw-threaded, as at 24, and fitted in a screw-threaded bore lin a reciprocatory block 25, which works inA a vertical bore provided in a boss 26 at the 'top of the shell -1`. This block 25 is preferably cylindricah as shown more clearly in Fig.` 5, and has a portion out away, as at 2 to provide a shoulder 28 ada ted to bear against the cam 17 on the thrott e-valve shaft 15.

A spring 29 is sleeved over the needlevalve 22 and is placed under compression' between the top of the partition wall -23 and end of the block 25 so that itA acts to hold the block with its shoulder 28 in contact with thecam 17 continuously. Hence,

as vthe shaft 15 is rotated to openthe' throttle-vali-'e-and the high point of the cam moves vfrom under the shaft, thespring raisesthejblock 25 .which in .turn'lfte the. A

ber, said last-mentioned passageway commumcating at one end with said horizontal pas r.isageway, and atfits opposite end with an upwardly iar'inglmixing chamber, said carbureting chamber having an oil inlet at the bottom thereof, a valve for controlling said oil inlet, an auxiliary air chamber commu- Y nicating with said mixing' chamber above said carbureting chamber and. having an opening communicating with said space between said outer and inner shells, a suction valve normally closing said opening, a throttle-valve controlling the flow `through said carbureter, and means controlled by said throttle-valve for opening and closing said oil inlet valve simultaneously with and proportionately to the opening and closing of said throttle-valve. v

3. A carbureter comprising an outer shell and an inner shell spacedtherefrom, said outer shell having an air intake opening therein, said inner shell having a horizontal transverse passageway communicating .at opposite ends with the space between said outer and inner shells, a passageway constituting a carburetingchamber, said lastmentioned passageway communlcating at a one end with said hor1zontal transverse pashaving an opening communicating with saidv air space between said outer and inner shells, said opening being normally closed by an upwardly opening suctionavalve, a spring acting continuously tseat said suction valve, an auxiliary spring for said suction valve, said auxiliary spring being inoper- Y"ative While the suction'valve is seated, and a throttle-valve for controlling the flow 4through said carbureter.

Signed atfSt. Louis, Missouri, this 27th day of April, 1912.

' WILLIAM F. RTHE.

Witnessesf G. A. PnNNINe'roN,

PAULINE AMBERG. i

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