US1371024A - Crude-oil engine - Google Patents

Description

81 BI v CRUDE OIL ENGINE. I APPLICATION FILED JUNE t6,- 191-9.

1,371 ,024, Patented Man 8, 1921.

2 SHEETSSHEET l.

s. BQGOLD. CRUDE OIL ENGINE.

APPLICATION FILED JQNE 16, 1919.

Patented Mal. 8,1921

2 SHEETS-SHEET 2.

WITNESS: 20 INVENTOR. g; fiaiizuelfi QaZd,

UNITED STATES PATENT OFFICE- SAMUEL B. GOLD, OF INDEPENDENCE, MISSOURI, ASSIGNOR TO WEBER ENGINE COMI- PANY, OF KANSAS CITY, MISSOURI, A CORPORATION OF IOWA.

CRUDE-OIL ENGINE.

' Specification of Letters Patent.

Patented Mar. 8, 1921.

Application filed June 16, 1919. Serial No. 304,602.

To all'whom it may concern:

Be it known that I SAMUEL B. GOLD, a citizen of the United states, residin'gat Independence, in the county of Jackson and State of Missouri, have invented certain new and useful Improvements in Crude-Oil Engines, of which the following is a specification.

This invention relates to crude oil engines, and more especially to governor-controlled liquid fuel pumps, and has for its ob ect to produce a construction whereby the fuel supply is regulated by the pressure in the pump as distinguished from the conventional method of regulating the stroke of the fuel pump by the governor in the injection type ofinternal combustion 011 engines, the advantage of the first method being a pos1 tive injection-regardless of quant1tya.t the proper time for ignition, whereas by the second or old method, a change in the length of stroke of the pump results in a corresponding chan e in the time of ignition.

With t e general object in view of producing an engine in which provision is made for giving a positive injection of fuel tothe combustion chamber in quantity accord- .ing to the load in the engine, the invention consists in certain novel and useful features of construction and combinations of parts as hereinafter described and claimed; and in order that it may be fully understood reference is to be had to the accompanying drawing, in which:

Figure 1, is a fragmentary side elevation of an internal combustion engine embodying the invention, certain parts being shown in section.

Fig. 2, is a horizontal section on the line II--TI of Fig. 1, of the pump element of the engine.

Fig. 3,. ,is a vertical section of the pump element of the engine taken substantially on the line IIIIII of Fig. 1.

Fig. 4:, is a horizontal section taken on the line IVIV of Fig. 1.

In the said drawings where like reference characters refer to corresponding parts, 1.

indicates the back or base casting of an internal combustion engine of the horizontal cylinder type, 2 is the base of the governor stand mounted upon the base 1 and 3 is the governor bracket bolted upon said stand 2. 1 is a vertical reciprocatory rod extending up through said stand 2 and bracket 3 and adapted to be reciprocated through fluctuations in the speed of the governor, not shown, whichmay be of the ball t pe or of any suitable character, and sai rod is pivoted at its lower end to a crank arm 5 secured upon a short horizontal shaft 6 journaled in stand 2 and projecting outwardly therefrom and provided at its outer end with a depending crank arm 7 for actuating a slidable wedge hereinafter identified. A power transmission chain or belt 8 extends from a wheel 9 to actuate the governor in the conventional or any preferred manner, and said wheel is journaled upon a suitable shaft 10 projecting outwardly from a plate 10 secured to the side of the engine base 1, said wheel being rotatable with and driven by a large sprocket wheel 11 driven by a chain 12 in any suitable manner from the crank shaft of the engine, not shown, and rotatable with said wheels 9 and 11 is a cam 13.

Rigid with the base of the engine and at one side of the cylinder 14 and projecting forwardly therefrom is a pairof lugs 15 equipped with a pair of forwardly projecting bolts 16 extending through a flange 17 projecting inwardly from a vertically-al ranged pump 18, this arrangement securing the pump rigidly in place. 1

The pump 18 is provided with a vertical piston chamber 19 containing a reciprocatory piston 20 provided with a reduced portion 21,- and holding said piston yieldingly upward when unop osed is a spring 22 seated in the lower en of the piston chamber.

A rock lever 23 enga es the upper end of the piston and is prdvided at the opposite end with an antifriction roller 24 normally held by the pressure of spring 22 on the piston, in the path of rotation of cam= 13 whereby said cam shall periodically rock said lever, the latter being pivoted interme-, diate its length upon a cross pin 25 mounted in a pair of rearwardly and upwardly projecting arms 26 of the pump.

overlying the front end of the rock lever 23 is a hand lever 27, the same being forked at its front end and pivoted on the pin 25.

Rearward of the rock lever the pump is times of a pin 31 connected for security against misplaeement to the pump by means of a chain 32. \Vhen the pin is fitted through the alined openings 29, it is adapted to overlie the hand lever and thereby through the interinediacy of rock lever 23, hold the pump piston depressed and inoperative. When said pin engages the perforations 80, itholds the hand or starting lever elevated to leave the pump piston free for operation. If desired the parts may be so proportioned that but one set of holes for the reception of pin 31 can be utilized to hold the lever in elevated or depressed position.

The pump is provided at its lower end with an outwardly projecting foot or lug 33 having a vertical intake fuel passage 3& with which communicates a tube 35 leading from a fuel supply tank, not shown, and saidflpassage 3i communicates with a horizontal passage 36 leading to the lower end of the piston chamber 19. 'To control with an adjustable head 53 the circulation of fuel from passage 34 to passage 36, a hollow valve 37 is provided, the same rising under the upward or suction stroke of the piston. Said valve fits slidingly in the vertical bore of a bolt 38 secured in the foot or lug 33, and near its lower endthe valve is provided with an orifice 39 for the admission of oil to fill the chamber of the valve and said bore and thus cushion the upward movement of the valve and facilitate the reseat-ing thereof, the reseating action being facilitated because the weight of the oil in the valve and bore aug ments that of the valve;

The pump is provided with a vertical passage 40 having a. reduced lower end 41 communicating with a horizontal passage 42 leading from the piston chamber 20, the wall around the upper end of the reduced end 41 of passage 40, forming a seat 3 for a ball valve 44 engaged at its upper side by a reciprocatory rod 45'extendin up through passage 40. and through a bolt 46 secured in the upper end of said passage, a lock nut 47 engaging said bolt andthe top of the pump to guard against accidental turning movement of said bolt. The bolt is provided in its upper end with a passage 48 into which the upper end of the rod 45 projects, and extending through said passage 48 and engaging the upper end of said rod is a slidable wedge 49, the upper edge of the wedge being engaged by a set screw 50 mounted in the upper end of the bolt 46, and said set screw is prevented from accidental turning movement by a lock nut 51. The wedge is adjustably secured upon the front end of a horizontal bolt 52, and the opposite end of said bolt is provided ivotally connected to the lower end of tie crank arm 7 of rock shaft 6, so that reciprocatory movement of the governor rod 4 shall impart longitudinal movement to the wedge for the purpose of forcing the ball'valve H to its seat or for releasing said valve to permit it to unseat, it being noticed by reference to Fig. 3, that the reduced portion of the piston is adapted for registration with a cross port 58 connecting the piston chamber'with passage 40, for a purpose hereinafter explained.

Projecting forwardly from the pump in a plane above the foot or lug 33, is a foot or lug 5% provided with a passage 55 communicating with the lower part of the pis ton chamber and with a vertical port 56 normally closed by a reciprocatory valve 57 of the 'same type as valve 37, the valve 57 being provided with an orifice 58 for the admission of oil for cushioning the upward movement and for facilitating the reseating movement of said valve, it being also noted that said valve is mounted in a bolt 59 mounted in the foot 54 and corresponding in function to the bolt 38 offoot 33. hen the piston moves downward, it pumps oil through passage 55 and thereby unseats valve 57 to permit the oil to enter the passage 60, and pass through a tube 61 connecting said passage with the injector. not shown, in the combustion'chamber' of. the engine, the latter and the injector not being illustratedras they may be of any suitable'or preferredtype for effecting the operation and control of the pump. The pump is provided with an overflow opening .62 communicating with passage 40 above the plane of the cross passage 58, and connected to said passage is an overflow pipe 63 for conducting oil passing therethrough', back to the tank or any other suitable receptacle, not shown.

Assuming that the ball valve is closed and the engine is to be started, the operator first opens the ordinary air relief cock, not shown, of the engine and then turns the fly wheel, not shown, forward for the purpose of drawing air in through. said relief cock, the backward movement of the piston at the same time forcing air in the customary manner from the crankcase to the combustion chamber of the cylinder. The hand lever is then given a number of quick strokes to effect the operation of the pump incotiperation with the spring 22. The upward move-- ments of the piston draw oil from the supply tank into the piston chamber, and the downward strokes of the iston force such oil from the piston chamlier through pas sages 55, 56, 60. the tube 61 and the injector to the hottube or the like, not shown, in the combustion chamber where it is vaporized and mixes with air to produce an explosive mixture. The fly wheel is then turned back ward about one-half of a revolution to compress the charge which then explodes and starts the engine, the parts turning'in the direction indicated by the arrow, Fig. 1.

The cam continues the operation of the pump, but'should the engine speed get too high, the governor slides the wedge 49 rearward to permit rod to slide upward and thus release the ball valve and thereby per niit oil to pass from the piston chamber through passages 42, 41 and 40, to the overflow opening 62, through which it escapes to the overflow pipe 63. It will thus be seen that excess speed of the governor effects an overflow of oil from the pump and a corresponding decrease in pressure therein and in the supply of fuel to the injector. A fall in the speed of the governor reverses the movement of the wedge and causes the same by pressure on rod 45, to reclose the ball valve and stop the overflow of oil from the pump and correspondingly increases the pressure therein and augments the flow of oil to the injector.

In the operation of the piston oil will work its way upward, and to limit this upwardv movement and guard against oil working up to the top of the pump, the piston is diametrically reduced at 21 as hereinbefore stated, and the pump is provided with the cross passage 58, so that the oil which collects around the reduced portion of the piston shall when said portion comes opposite said cross passages, it is free to pass through the latter into passage 40.' After the engine has been in operation a short time suflicient oil will be collected in passage 40 by entrance through said cross passage, to attain substantially the level of the overflow opening 62, and consequently a small quantity of oil will pass through the overflow pipe during the entire operation of the en 'ne without the unseating of the ball or b eeder valve 44, the supply of oil overflowing being instantly augmented however when the governor operates at a speed in excess of that desired because of the opening of said ball or bleeder valve, as hereinbefore explained.

From the above description it will be apparent that I have produced a crude oil engine embodying the features of advantage set forth as desirable in the statement of the object of the invention, and which is susceptible of modification within the principle of construction involved, and without departure from the spirit and scope of the appended claim.

I claim:

In a liquid fuel internal combustion en gine, a pump chamber having, valve-controlled intake and discharge passages and an overflow opening, a passage communicating with said overflow opening, a piston in the pump chamber having a reduced portion to open communication attimes with said passage, a spring engaging the lower end of the piston to impart the suction stroke thereto, a passage connecting the lower end of the first-named passage with the lower end of the pump chamber and having a valve seat, a

ball valve on said seat, a ,slidable rod resting on the ball valve, a governor-actuated means to raise and lower said rod, a rocklever resting at one end on the piston, a rotating cam to operate the rock-lever, a lever for engagement with the rock-lever to hold it out of engagement with the cam vwith the piston depressed, and a perforated lug and pin for engagement to lock the said lever in looking engagement with the rock leveror out of engagement therewith.

In testimony whereof I afiix my signature.

SAMUEL B, GOLD.

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