US1481558A - Carburetor - Google Patents

Description

Patented den. 22, W24.

EUGENE G. RICHARD, 0F FLINT, MICHIGAN.

GABBURETOR.

Application filed December 11, 1918. Eerisl No. 266,176.

Ser. No. 262,973, filed November 18, 1918,

and'l have, in the aocom anying drawing, illustrated such an emb iment, as that 1s a form which I have found very practical. My present improvements are, however, capable of being embodied and desirable when embodied in. other structures.

The main objects of thisinvention are:

First, to provide animproved carburetor with means whereby the temperature of the air passing to the carburetor is efiectively controlled with the adjustment of the throttle.

Second, to provide an improved carburetor with an improved means for regulating the temperature of the air passing to andv through the carburetor.

Further objects, and objects relating to structural details, will definitely appear from the detailed description to follbw.

I accomplish the objects of my invention by the devices and means described in the following specification. The invention is clearly defined and pointed out inthe claims. I

A structure which is a preferred embodiment. of my invention is clearly illus-' trated in the accompanying drawing, forminga part of this specification, in which.

Fig. I is a front elevation of my improved carburetor. Fig. II is a rear elevation of the structure shown in Fig. I with the addition of a porv tion of the hot air supply connection.

Fig. H1 is an end view looking from the left of Fig. I.

Fig. IV is a detail front elevation with the parts in the position occupied when the throttle valve is fully opened.

Fig. V. is a detail vertical section on a line corresponding to line 55 of Figs. Ill and VI.

Fig. V1 is a detail-horizontal section on a. line comes ondin to line 6-45 of Fi I, Hi and V? gs Fig. VII is a detail vertical section through the air inlets on a line corresponding to line 7--7 of Figs. III and VI.

F ig. VIII is a transverse vertical section on a line corresponding to line 8-8 of F ig. V1.

In the drawing similar reference characters refer to similar parts throughout the several views, and the sectional views are taken looking in the direction of the little arrows at t ends of the section lines.

Referring to the drawing, the body of my improved carburetor consists of the chambered members 1 and 2, the chamber in the member 1 being an air supply chamher and that in the member 2 a mixing chamber. The member 2 is provided with a flange-.3 for attachment to an engine with a delivery passe e 4 controlled by the throttle 5. The mom er 1 has a nipple-like projection 6 at one side with which the air inlet passage 7 engages as shown in Fig. V. The fuel reservoir 8 is disposed below the body member 1. The means for supplying and controlling the level of the fuel in the reservoir rare not shown; as they form no part of my present invention.

The air supply chamber communicates with the mixing chamber through the port 9 which is controlled by the suction actuated valve member 10. in the embodiment illustrated the fuel nozzle 11 delivers through the tubular valve member 12 to a carbureting chamber 13 within themen her 10. This carbureting chamber 13 delivers to the mixing chamber above the port The member 10 is provided with a'dependv ing valve sleeve 14 telescoping over to the valve member 12 and a tapered primary air inlet valve 15 coacting with the valve mem' ber 12. The valve member 12 is actuated from the rock shaft 16 having an arm 17 thereon engaging the valve and an arm 18 adapted to engage the sleeve lei when the member 12 is in its fully retracted position, thus holding the suction actuated inemher to its seat. I

The rock shaft 16 projects through the casing and is provided with an actuated arm 19 and a stop arm 20. These parts and their operation are described in detail and claimed in my (re-pending application. The air inlet passage '1' has rearwardly ofisct hot and. cold air inlet connections 21 and respectively. These inlet connections are arrsnged'in the same vertical plane." In practice the inlet connection 21 conto a hot ainconduit 23. These air inlet connections are'hontrollod by the valves 24 and. 25 provided with stems 26 and 27. These stems projectat the rear to receive the arms 28 and 29 respectively, the arms being connected by the link 30. These arms are preferably adjustably mounted on the stems to properly position the valves. They are arranged so that when the hot air valve is closed the cold air'valvc is opened and vice versa. The hot air inlet valve is preferably cut away at 31 so that when closed it permits the passage of a limited quanity of hot air.

he valve stem 27 projects forwardly through a bearing 32 in the passage Incinbcr '4" to receive an arm 32. The stem 33 of the throttle valve 5 projects through the front of t e carburetor body to receive an actuating arm 3% to which an actuating rod 35 is connected. The arms 32-and 34 are operativcl connected by means of the link 3.6 which Is pivoted to the arm 32 and slidably connected to the arm 34. A coiled spring 37 is arranged on this link, one end of the spring engaging the arm 34 and the other a rest. 38 on the link. A spring 39 is arranged on the link between the arm and the pin 40 at the outer end of the link. The spring 37 is of sufficient strength so that when the throttle valve is opened the spring actuates the air valves which are arranged so that with the throttle. closed the hot air valve is fully opened and the cold air valve closed, the hot air valve closing with the opening of the throttle valve and the cold air valve opening and closing with the opening and closing of the throttle valve. T he temperature of the air passing to. the carburst/or is thus effectively controlled, it being found that satisfactory results are produced whenthe temperature is raised upon the closing movement of the throttle, and vice verse.

To further control the temperature 1 provide a. heating unit or element 42 within the mixing chamber adapted to be heated by means of the exhaust gases. Thisheating chamber has a heating medium connection 45 controlled by the valve 44. This valve is controlled independently of the throttle and inlet valves so that it maybe left full on -in cold weather or closed in warm weather, and being capable of being adjusted independcntly of the air inlet and throttle sub WW stantially all conditions may be satisfactorilv met.

M yimprovcd carburetor is highly efiicient both in too inatwr of carburetion and in the e onomy of fuel.

l have illustrated and described my iniprovements in the form in which I have eni bodied the same. I have not attempted to illustrate or describe certain adaptations or modifications which may be desirable as I believe the disclosure made will enable those skilled-in the art to which my invention re latcs to'cmbodv or adapt the same as conditions may render desirable.

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

1. In a carburetor, the combination of a throttle valve provided with a stem projecting at the front of the carburetor, an arm on said stem, an air supply passage at one side of the carburetor provided with rearwardly ofisethot and cold air inlets disposed in substantially the same plane, valves for said hot and cold air inlets provided with rc arvvardly projecting stems, the stem of one of said air inlet valves also project ing forwardly above the air supply passage whichis provided with a bearing therefor, arms on the rearwardly projecting ends of said inlet valve stems, a link connecting said arms, said valves being disposed so that they are opened and closed alternately, an arm on the forwardly projecting stem, a link connected to such arm and slidably connected to said throttle valve arm. a spring disposed on said link of such strength as to actuate said air inletvalves and permit further actuation or" the throttle valve, a heating member disposed in the carburetor'in the path of the mixture, a heating medium-connection for said heating member disposed above said fill air inlet passage, and a valve for said heating medium connection, v

2. In a carburetor, the combination of a throttle valve provided with a stem projecting at the front of the carburetor, an arm on said stem, an air supply passage at one side of the carburetor provided with rearwardly oilsct hot and cold air-inlets disposed in substantially the same plane, valves for said hot and cold air inlets provided with rearwardly projecting stems, the stem of one of said air inlet valves also projecting forwardly above the air supply passage which is provided with a bearing therefor. arms on'thc rearwardlyprojecting ends of said inlet valve stems, a link connecting said arms, said Valves being disposed so that they are opened and closed alternately, the hot side of the carburetor 'provi vardly above the air supply passegewhich .wardly above the i Supply passagdwfiich menses a ing at the frontj'of; thecarbnretor, an am an arm on the forwardly projecting stem, a on Said stem, nnfleir supply ssssge at one link connected to such arm and slidebly coned with rearnected; to said throttle valve arm, a spring werdly projecting stem, the stem of one of disposed on said link of such strength as to said air inlet valves also projecting foractuate said air inlet valves and ermit further actuation of the throttle valve, a heatis provided with a bearing therefor, arms adjustebly mounted on the reerwardly project- 112g ends of said inlet valve stems, c link connecting said arms, said valves being. disposed so that they are opened and closed alternately, an arm adjustehly mounted on the forwardly projecting stem, a link con nected to such arm and slidebly connected to said throttle valve arm, and a sprin disposed on said link'at each side of said t rottle valve arm of such strength as to actuate said air inlet valves and permit further actuation of the throttle valve.

4. In a carburetor, the combination of a throttle valve provided with a stem projecting at the frontof the carburetor, an arm on slidably connected to said throttle valve arm, said stem, an air supplypnssagle at one side springs disposed on said link of such of the carburetor "'ovided-wit rearwardly strength. as to actuate said air inlet valves offset hot and co (1 air inlets disposed in and permit further actuation of the throttle substantially the same plane, valves for saidvalve, a heating member disposed in the carhot and cold air inlets provided with real' buretor in the path of the mixture, a heating wardly projecting stems, the stem of one of medium connection for said heating memsaidair inlet valves projecting forher, and a valve for said-heating medium connection.

In Witness whereof, I have hereunto set path of the mixture, a heating medium connection for said heating member disposed said heating medium connection.

5. In a carburetor, the combination of a throttle valve provided with a stem, an arm on sdid stem, an air supply passage provided said hot and cold air inlets provided with. projecitingstems, arms on said inlet valve stems, a link connectin said arms,isaid valves being disposed so t at they are opened and closed alternately, a link connected to an arm on one of said inlet valve stems and is provided with a hearing therefor, arms on the rearwardly rejecting ends of said inlet my hand and seal in the presence of two witvalve stems, a ink connecting said arms, messes. I

said valves being disposed so that they are EUGENE C. RICHARD. [L. 8.] opened and closed alternately, the hot airfin- Witnesses:

let valve permitting the passage of a limited VEDA G. Pm'nrs,

quantity of air when in its closed position, BERTHA MoCoLLUu.

ing member disposed in the carburetor in theabove said air inlet passage, and a valve for W th hot and cold air inlets, valves for

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