US416649A - Gas-engine - Google Patents

Description

(No Model.)

C. SINTZI GAS ENGINE.

No. 416,649. y Patented 1399.3; 18891` WW I L aw/LM/c/ V.7%6150 ruf/g.

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CLARK SINTZ, OF SPRINGFIELD, OHIO.

GAS-ENGINE.

Y SPECIFIGATION forming part of Letters Patent No. 416,649, dated December 3, 1889.

Application filed February 20,1889. Serial Nox 300,595. (No model.)

To all whom it may concern:

Be it known that I, CLARK SINTZ, a citizen of the United States, residing at Springfield, in the county of Clark and State of Ohio, have invented certain new and useful Improvements in Gas-Engines, of which the following is a specicatiomreference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in gas-engines; and the improvements have reference to a mixingvalve, whereby the two constituents or ingredients of which the explosive agent is composed can bemeasured and determined, so as to preserve their predetermined proportions,

` while the amount of each ingredient is lessoV sened or increased according to the speed at which the engine is traveling and according to the load or amount of labor which it is performing; and the improvements also have reference to the means of actuating the valvestem and its valves, so that when the engine shall reach the maximum of speed the actuation of the valve shall automatically be discontinued and automatically recommenced upon the lowering of the4 Speed, for`the purposes and in the manner hereinafter more fully pointed out. 4

In the accompanying drawings, forming a part of this specification, and on which like reference-letters indicatecorrespondingparts, Figure V1 represents a side elevation ot' a gas-` engine of any approved type with my improvements applied thereto; Fig. 2, a rear elevation of 4a portion of the cylinder and also showing my improvements applied thereto; Fig. 3, an enlarged detail sectional view of the mixing-valve, showing the construction of the parts; Fig. 4, a detail perspective View of one end of the bracket which supports the mixing-valve, and Fig. 5 a detail sectional view of the lever for actuating the valvestem.

The letter A designates the carburetingtank in which one constituent of the explosive agent is carbureted; the letter B, the eugine-bed, preferably secured upon said tank;

and the letter O the cylinder, secured to the bed B in any suitable manner. These several features are preferably substantially of the type shown and described in Letters Patent granted to me May 29,v `1838,

vided with a box or shell E, made 'integral with the bracket or separately and secured to it. To the innerside of this box connects a pipe F, 'which leads either directly to the engine-cylinder or through suitable intermediate mechanism-as, for instance, the valvechest G. (Shown in Fig. 2.) This chest or any other intermediate mechanism through which the motive agent passes from the pipe F in its passage to the cylinder forms no part of the present invention, in which the intermediate instrumentalities may or may not be used in connection with the use of the mixing-valve and this valve and its adjunct, which form the subject of the present invention. v

The letter H refers to the mixing-valve shell or casing, preferably made of cast metal or of brass, and consisting of chambers I and J, with an air-passage K between them.

This shell is bolted or otherwise secured to the box E, as seen in Fig. 2,`and so arranged that the point of the-outlet L of the chamber .I is coincident with the open end M of Athe box E. The chamber I is in communication with the open air throughan orifice O in one side of the chamber, anda cut-oft-valve casing is preferably employed and connectedwith the shell I-I opposite the orifice O, and

provided with a flap or other form of valve Q, which opens to the inflow of air and closes` The interior of the extension R of the shell H communicates with theA against its exit.

chamber J through a gas-passage S. Apipe T, communicating with the gas-supply, connects with the extensionR at the inlet-orice U, as by being screwed into said orifice. `I prefer to connect this pipeT with the tankA, as seen in Fig. 1. At least such is the case when I employ carbureted carbon dioxidethat is to say, when I employ the carbureted residuum of the explosions or exhaust product of the engine as the explosiveingredient of the motive agent, as 'more fully set` forth and claimed in an application filed by me December 28, 1888, Serial No. 294,225, for such compound and method of generating 'r oo the same. This pipe is preferably provided with a'cut-off V and also has a check valve-stem Y, having valves Y and Z,which pulley is carried by this shaft.

respectively control the air-passage K and the gas-passage S. It will be observed that the diameters or areas of these passages are unequal, the air-passage being in excess of the gas-passage. The object of this is to supply the proper amount ofY atmospheric air to the chamber J for the quantity of the car- Vbureted ingredient, or gas,.as the case may be, which enters said chamber J through they passage S. The valves Y and Z are xed on the stem Y, and are so arranged that both of them seat at the same time, so as to simultaneously cut off the admission of air and the admission of the carbureted ingredient or the gas which enters into the compound constituting the explosive agent.

g I have hereinbefore stated that the object in view was to maintainla predetermined proportion of the explosive and non-explosive ingredients of the motive agent, while the quantity of such ingredients and the volume of the compound admitted to the cylinder would vary with the speed and labor of the engine. The valve-stem Y is therefore actuated in such manner that the length of its stroke will begreatest when the engine is running at the lowest speed, and will gradually shorten as the engine increases in speed, and will finally rest or become inactive with the valves seated and the passages K and S closed when the engine reaches, and so long as it maintains, its maximum speed. The degree of speed which may con stitute this maximum speed will vary according to the desire of the user, and will be effected by the particular adjustment of thev governor mechanism.

I have shown and will now proceed to describe one form v. of. such mechanism, and the intermediate instrumentalities by which the valve-stem Y is operated in the manner above described, at the same time remarkin g that such governor does not form the subject of the present invention, and that I do not wish to be understood as limiting myself to the use of it. The usual main shaft a is mounted in the bed B, and the usual belt- To one of the spokes c of this wheel I pivot, through a pin d, the arm e of an eccentric f. This eccentric is as much larger than the diameter of the shaft Ct as may be desired under different circumstances, and this difference in diameter will determine the maximum stroke of the valve-stem Y. Governor-arms g and 7L are pivoted to opposite spokes in the wheelh and provided with adjustable weights t', and connected with the arm e of the eccentric by links j and 7c, the links being so arranged with respect to the pivotal points of the arms g and 7L that the centrifugal action of the weights 'L' cause the weights to operate in unison and turn the arm e on its pivot in such a direction as to lessen the eccentricity between the eccentric and the shaft a, which of course decreases the throw of the eccentric. The eccentric is normally held in a position to give its greatest throw by means of a rod Z, secured to the arm e and slidingly mounted in one of the spokes of the wheel, with a spiral spring m interposed between said spoke and arm and a nut o. The spring tends to force the arm e in the opposite direction to the movement which is given by the centrifugal action of the weights. An eccentricrod p is mounted on the eccentric f, and connected at its other end with a pivoted arm g, slotted, as seen in .Fig.r5, to move freely over the valve-stem Y. This stem is provided with a stop, preferably an adjustable stop, composed of a nut fr', against which the arm g strikes to move the same outward, whilethe stem is moved inward by its spring H. The position of the stop is such that it will not be reached by the arm g when the strokes of the arm grow shorter than a predetermined length by reason of the shortening of the throw of the eccentric to minimum, or a'pproximately so, by the maximum or approximately maximum speed of the engine. The effect of the failure of the arm g to reach the stop r is simply to fail to actuate the stem Y and valves and to cut off the further supply of the motive agent to the cylinder. This continues until the engine lowers its speed by partially spending its momentum. Vhen this occurs, the governor mechanism allows the throw of the eccentric to increase, and consequently the throw of the eccentric-rod p and the length of the stroke of the arm g, such increased stroke of said arm enabling it to reach the st'op r and to move the valvestem a greater or less distance, according to the rate of the speed of the engine, the stroke increasing as the speed lessens, and the valves Y and Z moving farther from their seats and admitting a greater quantity, though'preserving the proportion, of the motive agent.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is*- l. The combination, with a gas enginegovernor mechanism, an eccentric controlled thereby, an eccentric-rod, and a pivoted arm vibrated by said rod, vof amixing-valve having air and gas passages leading to afcommon chamber, a valve-stem having a valve for each of said passages, and a stop with which said arm engages or not, according to the length of its vibration, and a spring to normally seat said valves.

2. The combination,with abracket secured to or near to the engine structure and having a box-like formation, a pipe leading from said box to conduct the motive agent toward the cylinder, of a mixing-valve shell secured to said box, a chamber in said shell communi- IOO IIO

.ITS

eating with saidlboxV7 air and gas passages nected to one end of said formatiomsubstan- 1o leading to said chamber, avalVe-stem mounted tially as shown and described.

in said shell and having a valve for each of In testimony whereof I ax mysignature said passages, the passages being of different in presence of two witnesses diameter. p

3. Ina gas-engine, a bracket constructed CLARK SINTZ to be secured to the engine structure at o1' Witnesses: near one end and fashioned at the other end RANDOLPH COLEMAN, With a boX-like formation, and a pipe con- (1C. FUNK.

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