US1104222A - Carbureter. - Google Patents

Description

0. E.- RIMMER, P. A. PLYMIRE & W. WILLS.

I GARBURETBR. I APPLIOATIONIIILED NOV. 24, 1913.

Patented July 21, 1914.

' To all whom it may. concern unrrnn snares PATENT fus on.

cnnnrc E. BIMMER, FRED A. 'rLYIvIIRE, AND WILLIAM virus, or ILUNING, NEVADA;

SAID 'wILLs' ASSIGNOR or THBEE-TENTHS on THE WHOLE nrenrro WILLIAM L.

ROHBEB, .OF CANTON, OHIO.

Nevada, have invented new and useful 1111- v provements in Carbureters, of which the following is a specification, I U I This invention relates to a carbureter. Y The object of the invention is to providea simple, cheaply manufactured, easily adjusted carbureter which is particularly con structed for carburetin low gravity hydrocarbon fuels, such as distillate and the l1ke. Another Object of the invention is to provide a 'carbureter which is so constructed. that springs and delicate adjustments maybe entirely eliminated, and in which water or dust accumulations will have no effect.

Further objects will" appear herelnafter. The'invention consists of the parts and the construction and --'combination of parts as hereinafter more fully described .and

nting scream claimed, having reference to the accompany ing drawings, in which,- Figure l is a vertlcal longltudlnal section of the carbureter showing its connection with a standard type of internal combustion engine. Fig. 2 is an enlarged-cross section on the line V-V of Fig. 1.. Fig. 3 1s a horizontal cross section on the line H of Fig. 1. Fig. 4 is an enlarged section of the pipe showing the position of the back-fire Referring to the drawings: A indicates an internal combustion engine of the four-cycle type, which is partly'broken away, and B indicates the inlet valve of same, operable in the usual manner.

C indicates in general a tank provided witha ta ering bottom 2 and a head 3. Ex;- tending t ough the bottom of the tank is a nozzle or tube 4, near the lower. end' of which is formed a plurality of small perforations 5. The-portion of the tube 4 which projects through the bottom of the tank is connected, as at 6, with a standpipe-7, having a valve .8 mounted on its upper end.

Adjustably mounted above the outlet of the tube 4, upon arms 9 and in concentricposition with the tube 4, is aconical shaped member 10, upon which is mounteda plate 11, having an annular downwardly-turned.

deflecting edge 12. .For the purpose of ad justing the plate 11 and cone 10 with rela- Specification of Letters Patent.

Application filed November 24, 1913. Serial No. 802,633.

CARBURETEB.

Patented July 21, 1914;

1 l1 and cone 10 may, thus be adjusted with relation to the mouth of the tube 4 by turntion to the outlet opening of the tube 4, a.

ing same in one direction or another, and.

the adjusted position may be retained by a lock nut 14 adapted to engage with the collar 13.

Mounted above the adjustable plate 11 and secured to the tank as at 15, is a stationary bafiie plate 16, in which is formed a central opening 17, and positioned above the plate 16, upon arms 18, is a secondary deflecting plate or baffle plate 19, A suitable form of hydrocarbon liquid is delivered through a pipe 20 through a valve 21, and the fuel level within the tank is maintained by a suitable form of float 22, pivotally secured as at 23 and adapted to close the needle valve 21 when a predetermined fuel level has been attained within the tank. The tankis otherwise connected through a pipe 24 wlth the inlet chamber 25 o f'the internal combustionv engine, and an auxiliary inlet valve 26 is also provided on this line.

The operation of this portion of theapparatus will be as follows: A downward movement of the piston within the cylinder of the engine'will provide suificient suction 1n the usual manner to open the inlet valve B and produce suction in the pipe con-' nection 24. Suction is thus transmitted to I produce suflicient vacuum within the tank C to cause an inrush of air through the valve .8, pipe 7 and nozzle 4; the volume of air admitted, being regulated" by the valve 8.' An inward rush of air through the tube 4 will create a vacuum in the lower portion of the tube and cause'the hydrocarbon fuel to enter through the lower openings 5 formed in the tube. A mixture of fuel and air in the form, of a spray will thus be ejected from the upper end of the tube and ,will be projected against the conical cover 10', where the spray and air are-deflected up the inclined-surfaces of the conein the the out 'going air in the direction. of arrows ie ease 0 must pass. The air is then again deflected by the plates 16 and 19 before it is allowed to escape from the tank C through the pipe 24 to enter the cylinder of the engine. The spray p ojected against the conical surface of the cover 10 is first broken up and partlyevaporated by this action. It is again further broken up by the down-turned deflect 'ing flange 12, and still .further broken up first strike the plate 16 before escaping.

through the central opening 17, and any particles of fuel still remaining unvaporized will strike the under-surface of the plate 19 before escaping around the outer edge of same in the direction of arrows (Z and Very low gravity distillates impossible to handle in the standard types of carburetors now in use are successfully carbureted in the device here shown. On account of the spray action and the great number of deflecting and evaporating surfaces a perfect carburetion and greater homogeneity of the final mixture is secured. v

The quantity and richness of the mixture that an engine will take varies greatly with the speed; at low speeds the mixture should be richer than at high speeds, this being due to the fact that at low speeds more heat is lost through the cylinder Walls by radiation, and also considerable compression is lost by leakage. pression higher, due to less leakage and less loss of heat by radiation; therefore unless the mixture be leaner at high speed there might be danger of preignition. lVith this object in view we have provided means for quickly and easily adjusting the richness of the mixture. if a lean mixture is desired it is accomplished by partly closing the valve 8 and partly opening the auxiliary air inlet valve indicated at 26. If a rich mixture is desired, the valve 8 is accordingly opened while the auxiliary air inlet opening 26 is partly closed. Any variation of fuel mixture may thus be secured by turning one or the other of the valves 8 and 26, and the quantity of gas delivered to the engine may be throttled through the usual type of valve, indicated at 27. This throttling action may be operated either by hand through the lever 28, or through a governor connection not here shown.

By referring to Fig. 1 of the drawings it can easily be seen that a considerable quantity of water may collect in the bottom ofstandard types" of valves.

such as fire screens 30, see Fig. 4, may" a,

At high speeds the com-e the tank C without interfering with the operation of the device, for the simple reason that the liquid contained Within the tank C is constantly drawn up thro- 1 the tube from the tube 4: which is not evaporated or carbureted deflected by the annular flange 12 and returned to again enter the openings 5, and is thus continuously cir- ,culated until finally carbureted or evapo: 1 rated. Similarly any accumulation of sand or grit will have no effect upon. the operation' of the device, as the openings 5 may be sufficiently large to not be clogged by sand or like naterials. i In the carburet'er constructed. as here shown all delicate adjustments arev posh tive ly eliminated, as the only adjustments necessary are the valves 8 and :26, which are Any accumulation of water or grit within the bottom of the chamber'may be drawn ofi throughta valve 29, from time to time.

For the purpose of positively preventing back-firing tothe tank C, through the inlet valve B and the pipe 24, suitable means placed in the pipe-line 24. A suitable Y of check valve 31 may also be connected"in' the line, if desired. ,By referring to Fig. 2,

it can be seen that a positive means of preventing back-firing has been provided. This means consists of an enlarged cap 32 adapted to receive a screen or perforated plate 33. One or more layers of asbestos cloth, indicated at 34 is placed on top of the screen and a second screen 33* is then inserted and the whole secured together by a screw cap 35. The back-firing screen constructed as here shown is preferably placed as close to the engine as possible, as indicated in Fig. 1. a

The carbureter constructed as here shown is neat and simple in appearance and posi tively always reliable in action, and takes very little more space than the ordinary types of carbureters now in use.

The materials and finish of the several parts of the carbureter are such as experience and judgment of the manufacturer may dictate.

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

l. The combination in a carbureter, of a The portion of the spray e e ted on its outer edge mounted above the tube, a conical-shaped deflector secured to said plate, means for raising or lowering the defiectors with relation to the top of the tube, a plurality of stationary deflecting plates secured in the tank above the adjustable deflectors, an outlet pipe connected to the top of the tank, means in said pipe to prevent back-firing into the tank, and an auxiliary air valve in the pipe.

2. In a carbureter, a liquid fuel containing tank, an air inlet tube extending up through the bottomof the tank having a plurality of perforations locatedbelow-the level of the liquid fuel, a deflecting plate having a --downturned flange 'atits outer edge, a cone-shaped deflector secured to the under face of said plate and at'th center above said deflecting plate and having its bottom provided with a central opening, and an imperforate secondary bafie plate connected to the first, named baflle plate and located thereabove and iii-spaced relation to the tank side walls.

In testimony whereofwe have hereunto set our hands in the'presence of two subscribing witnesses. q 1

CEDRIG E. RIMMER.

FRED A. PLYMIRE. WILLIAM WILLS.

Witnesses:

Mrs. H. R. WA NER, Mrs. E. L. MASON.

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