US970102A - Carbureting apparatus. - Google Patents

Description

F. OSTERMAYER.

GARBURETING APPARATUS. v APPLICATION TILED JUNE 10, 1909. 970,102, Patented Sept. 13, 1910.

INVENTOR A TTOHNEYS M w a a M a: 0 f

- used in connection with gas engines.

'forth in the claim.

' -"UN1TED strirrns PATENT OFFICE.

FREDERICK OSTERMAYER. OF ELIZABETH NEW JERSEY.

CARBURETING APPARATUS.

To all whom it may concern:

Be it known that I, l mcomueu ()s'rnn- MAYER, a citizen of the United States, and a resident o't Elizabeth, in the county ot -Union and State of New Jersey. have invented a new and Improved (farlmreting .'\pparatus, ot' which the following is a l'ull clear, and e'aet description.

This invention relates to carhiu'eting apparatus, and is intended especially to he The object of the invention is to provide simple carburcting mechanism in which the degree of carburization ot' the air can be regulated irulependently ot' the speed of the err gine, although the mechanism producing the feed is driven positively from the mechanism of the engine so as to constitute a forced feed. In the operation of the aiparatus. the liquid fuel is forced through a nozzle having tine pertorations so that the had is atomized into the air current passing to the engine cylinder.

The invention concerns itselt with the means of driving and controlling the operation of the pump by means of which the fuel is forced through the nozzle.

The invention consists in the construction and. combination of parts to he more lully described hereinafter and particularly set Reference is to be had to the accompany ing drawing forming a part of this specitication, in which similar characters of ret'erence indicate corresponding parts, and in which the figure is a partial section through the mechanism, the said section being taken through the -nlmp cylinder and through the mixing chain er.

Referring more particular to the parts, 1 represents the 't'ran'ie of the mechanism which may include a projectin bracket. 2.

supporting the counter-shalt I). lhe engine shat't 4 may he supported in the upper part of the t'ramc l as indicated. and is provided, with a belt .pullcy 5 over which a. belt t' passes. This hel't passes on a larger bolt pulley (3 which is loose on the shatt. it. ()n the taco ot this pulley a pawl 7 .is provided which meshes with a ratchet wheel 9 rigid on the shal't'. it. so that when the. belt: is driven in the direction ot the arrow. the shaft I) will be rotated as will be understood. The sliat't i) is provided with a crank J which enables it to be. rotated directly by hand it desired. in the lower part ol the l'rame l a Specification of Letters Patent.

Application filed Jane 10. 1909.

. same liv a link 24S.

. atented Sept. 13, 1910.

Serial No. 501,287.

with a piston head 1.4 which is snitably' packed as shown. Above the cylinder, a transverse bore is formed, which constitutes a valve chest for a rotary valve 16. This valve has a cylindrical body with 1"- dially projecting wings t7 and 18-. From. the valve chest 15 a port 1!) extends to the left end ol' the cylinder and a port 20 extends to the rightend of the cylinder. Between these ports an admission port '21 is formed which is connected with a fuel supply pipe 22 as indicated. The valve chest 15 is formed in the housing 23 which may be integral with the cylinder and disposet above the same as indicated. This housing is formed with a threaded neck it upon which a tubular mixing chamber '25 is attached, the ends of this mixing chamber being provided with screw threads Qttto enable the pipe sections to be attached to carry the air to the engine cylinder.

in order to rock the valve '16 it is rigidly attached to an arm .37 which extends long1- tudinallv with the axis oli the pump cylinder 10 as shown. This arm 27 is connected at its end with an eccentric. rod 28 which extends upwardly to an eccentrc on the shal t I). similar eccentric 30 is provided on the shaft 1) and from this eccentric 30 a rod 31 extends over to a main lever 32. This main lever is disposed in a substantially vertical position and its lower end is pivotally connected to an extension 33 projecting from the end of the piston it. The frame 1 is termed with horizontally projecting bracket arms 2H between which a vertical guide bar 35 is formed, and on this guide har It? a slide block 216 may be moved up and down by means of a lever 37 connected to the This lever is pivoted at. zit) on the side. ot' the frame and. may be held tixed in any adj ustcd position by means of a segment it) having a locking mechanism .4-1 cooperating therewith. This locking mechanism is operated by a linger lever 42 disposed near the handle lit at the lever. as shown. lty means of the lever 37 the block 2H3 may he slid along the, guide bar so as to regulate the stroke of the pump. In this connection, attention is called to a longitu dinal slot .14 which is formed in the lever The block 36 is provided with a pin i5 which passes through this slot and constitutes a fulcrum for the lever 32 when it swings. From the upper side of the valve chest 15 a delivery port 46 passes and this port opens out into a delivery chamber 47 from wh ch a pipe 48 extends upwardly to an air chamber 49. In the pipe 48 is a stop-cock 50 which/may cut off communication with the air chamber when desired.

Just above the chamber 47 a nozzle 51 is provided, said nozzle being of tubular form and having a crowned head with three perforations 52 therein as indicated. These perforations open on the interior of the mixing chamber 25 and are very small so that when the fuel is forced through them it becomes atomized in the current of air passing through the mixing'chamber.

The mode f operation of the apparatus will now be described: I

When the valve 16 is in the position shown, the pump piston ll will be moving toward the right. On this stroke, fuel will be drawn up through the pipe 22 through i ,the ports 21 and 19 to the left end of the cylinders.

At the same time ti e fuel in the right-end of the cylinder will bL forced out through the ports 20 and to no as to be forced through the nozzle :2. If the lever 37 is adjusted so as to hold-the slide block 36 at its most elevated point, that is, IP31 the upper end of the slot 414., the pump will then have the maximum possible stroke and will be giving the greatest possible feed of fuel through the nozzle. On the other hand if the slide block 36 is moved down to its lowest possible position, then the amount of movement of the pump piston can be made very slight, so as to give practically no feeding effect. In this way, 1 am enabled to give the pump a variable stroke, and the length of this stroke is independent of the speed of the engine. Thepump can exert a considerable force in advancing the fuel and can be used, if desired, to draw the fuel up from a fuel reservoir, which is in adepressed position. VJhatever he the length of stroke of the pump, the valve 16 would be rocked backward and forward so as to open one side of the cylinder, to the nozzle first, and then the other side. When the engine reverses, it does not affect the pump on account and pawl pump, a frame of the ratchetand pawl cormection in the driving mechanism of the pump. llurthermore, on account of the ratchet and pawl connection it is evident that the pump can be driven when desired, by means of the crank On account of the air chamber t9 the flow through the nozzle is made more uniform and steady, which is desirable.

Special: attention iscallcd to the ratchet 7 through which the pump is driven from the engine, and to the fact that with this construction the reversal of the .igine practically diseugages the pump. This is :ulvantagcous because 'the WOl'li' nccessary to drive the pump is thrown upon the engine when the engine is reversed. In this connection it should be remembered that in automobiles where the engine is reversed it is usually not necessary to develop great power. but simply to move the vehicle slightly to the rear. Cutting out the .pump in this manner is therefore advantageous, and the supply of fuel in the carburetor and feed. pipes will be suiticient to supply the on gine for the short period during which it runs in a reverse direction.

Having thus described my invention, I claim as new and desire to secure by Letters Patent: 4

Mechanism for supplying explosive mix ture to internal. con'lbustion engines, comprising a tubular mixing chamber, through which air may pass, a pump disposed below said chamber and including a cylinder and a bracket extending up 'ardly and connected to said mixing chamber, a nozzle within said mixing chamber and having passages connected to opposite ends of the cylinder, a 'alve for controlling the communication through said passages, a piston within said connected to said cylinder and said mixing chamber, a slide block guided by said frame and having a fulcrum. pin, a lever having a slot engaging with said. fulcrum pin and connected to said piston, an engine shaft, and means for'driving said lever from said engine shaft-Q In testimony whereof I have signed my name to this specification ill the presence of two subscribing witnesses.

FREDE RICK. OSlERMAYEE, l'viti'iessesz M A ur )s'rn caraynn, .ltosma Sonmu'rznn.

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