US1301054A - Automatic auxiliary air-supply device for internal-combustion engines. - Google Patents

Description

AUTOMATIC AUXILIARY AI E. G. HODGESA R SUPPLY DEVICE FOR INTERNAL COMBUSTION ENGINES. APPLICATKON HLED Ame. 191a.

Patented Apr. 15, 1919.

' To all whom it may concern:

- nnwann e. Homes, on mansnatmown, IOWA.

AUTOMATIC AUXILIARY,AIR-SUPPLY DEVICE FOR INTERNAL-COMBUSTION ENGINES.

Be it known that. I, EDWARD G. House's, av citizen of the United'Stat/es, and resident of Marshalltown, in the county of Marshall and State of Iowa, hav invented a certain. new 41nd useful Automatic'Auxiliary Air- Supply Device for Internal-Combustion Engines, of which the following is a specification. r

The I object. of my invention is to pro vide an automatic auxiliary air device adapted for use with internal combustion engines for. supplying air to the fuel mixture, which device is of very simple, durable and inexpensive construction and is so constructed and arranged that it may be readily and easily mounted on or removed from. any ordinary explosive engine.

A further object is to make such a device in the form of an attachment so that it may be readily adapted for use withengines of dilierent makes.

More particularly it is my object to provide such a device including a readily adjustable air supply pipe having a flaring or bell-shaped end adapted to receive air, and provided with a buttenliy valve and an engaging stop therefor, and a. shield member adapted to protect one side of the butterfly valve from the pressure of air lasts passing through said air supply pipe.

With these and other objectsin view my invention consists in the construction, ar-

rangement and combination of the various parts of the device, whereby the objects contemplatedare attained, as hereinafter more filly set forth, pointed out in my claims and illustrated in the accompanying drawings, in which:

Figure Lshows a side elevation of an engine block having mounted thereon my i- 'nproved automatic auxiliary air supply device.

Fig. 2 shows an enlarged, vertical,v sectional view through that portion of the air supply pipe having the butterfly valve and through the chamber in which the auxiliary air and fuel mixture are-mixed.

Fig. 3, shows a horizontal, sectional. view taken on the line 3-3 of Fig. l; and

i Fig. -l shows a detail, plan view with parts Specification of Letters Patent. Patg fmd A 15 1913; Application filed April 6, 191a.

Serial No. 227,155.

are preferably staggeredwith relation to the rows of openings in the lower tube.

I provide also a. flexible fuel conducting tube 17 having a flaring end 18 preferably located at a suitable point to receive the air from the fan 11 and the air rushing in through the radiator.

Connected with the tube 15 is a short tube 19. An intermediate tube 20 is screwed to half of said the ends of the respective tubes 19 and 17,

Received within the as shown in Fig. tube 20 is a butterfly valve 21. It will thus appear that the tube 20 forms a valve casing. VVit-hin the valve casing 20 is a stop 22 'for limiting toe movement of the valve 21 in one direction,

The stop 22 forms a seat for the valve 21 for approximately onehalf the-circumfe= ence thereof. The valve casing 20 is provided-with a row of small holes 523 near the valve 21 when the latter is closed on. the

side thereof next to the intake end of'the- -valve casing.

lVithin the shield 24 for protecting that half'of the valve 21 which coacts with the seat 22, from contart with a current of air "passing through the air simply-pipe 17 from. the flaring end thereof, and for-guiding the air and directing it against. the other half of the valve.

It will he noted .thatwv'hilb under uorma conditions, when the/engine isnot running, the underside of the shield 2.4. is, in a sense. suhjcrt to atmospheric pressure, because air will enter the, valve casing 20 through the openings 23, or through the open ended tube 17 and will pass around the upper end of the shield 24 adjacent to the valve 21, yet when the engine starts and a vacuum is created in the pipe 19, the under surface oi the shield :21 and the pocket formed hetwccn said shield and casin 20 is subject vai've casing 20 is'an inclined- I arm 20.

substantially to the vacurm conditions in the manifold as soon as the valve 21 begins to open.

is due solely to the air blast from the fan 11, further opening movement is due both to the force of the air blast and to the unbalanced pressures on the two sides of the upper half of the valve.

The valve 21 has a stem 25on which is an Connected with the arm 26 is a spring 27 fornormally holding the valve 21 seated or closed. 1 7

It will be seen that my device comprises an attachment in which the tubes 12 and 15 are inserted between the carbureter and intake manifold and the other parts are connected therewith in the manner hereinbefore described, so that the device may be applied on various makesof" cars by slight'alterations or adjustments.

In the practical operation of the device the sprin 27 is secured in position so as to hold the valve 21 seated until certain pressure occurs against the valve 21. I hereupon the pressure of air through the tube 17 will engagethe unprotected side of the valve 21 and tend to open the valve. The greater the air pressure the greater will be the opening movement of the valve, and the greater will be the supply of air furnished to the fuel n'iixture. On account of the mix- I ing device hereinbefore described, comprising the tubes 12 and 15 it will be seen that the air assing from the tube 15 through the openings 16 in the tube 12 will be thoroughly mixed with the fuel mixture.

The advantages of .an auxiliary air supply device of this general nature are more fully set'forth in my co-pending application Serial Number215,41 l.

; Son e changes may be made in the con struction and arrangement of the various parts of my improveddevice without de parting from the essential features and purposes of my invention, and some changes 'will be made in adjusting the device for use with different cars, and it is my intent to cover by my claims any modifications of structure or use of mechanical equivalents which may be included within the scope of said claims.

It will readily be seen that the spring 27 may be located at different places for accomplishing the purpose, and that other changes 'mlght be made.

It will be obvious with this device, that the warm air and vapors for fuel mixture After the initial opening movemetnt which 3.Ina

.In the end of the flaring member 18 is a screen 18 for keeping dirt and the like out 0f the tube 17. e

The holes 23 permit a movement-of the air through the tube 17 even before the air pressure is great enough to open the valve 21.

I have shown in Fig. 2, a small pipe.

28 communicating with the pipe 19 and designed 'to be connec. ed with the vacuum feed tank forming part of the fuel system of a motor vehicle. v I

I claim as myinvention:

1. An auxiliary air attachment for motor vehicle engines'comprising means for conducting air to the fuel supply of such engines, a flaring/i end, a valve casing, a butterfly valve therein, a shield for protecting a portion offsaid butterfly valve from contact with blasts of air passing throu h said air supply, tube to said first described tubes, means for yieldingly holding said valve in its seated or closed position, said casing being provided with openings in its wall adjacent to said valve on the side of said casing opposite said shield, and on the side of the valve adjacent to the intake end of the valve casing.

2. In a device of the class described, means for supplying auxiliary air to the fuel mixture of an explosive engine, .said' said means including a tube having means including an air supply tube, a valve casing communicating therewith, a butterfly valve mounted in said casing, a seat for the edge of said butterfly valve for approximately one-half of its circumference, a shield and guide device adapted to protect a portion of said butterfly valve from contact with lasts of air passing through said tube and for guiding said air against an other portion of said valve.

evice of the class described, a fuel mixture conducting tube, an auxiliary air supply tube arranged in communication with said first\tube, a valve casing arranged in the path of\air' passing through said air supply tube, a butterfly valve in said casing, an inclined shield for protecting sub. stantiall'y one-half of Said butterfly valve EDWARD e. HODGES.

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