US514713A - Gas-engine - Google Patents

Description

l v2 SheetsfSheet 1. o. msm. GAS ENGINE.'

(No Model.)

' Patented Feb. 13Y

i l s 5 n l TME NATIDNAL Ll'n-loaumma eo C. HISEY.

GAS ENGINE.

- 110. 514,713. Patented Feb. 13, 1894.

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commonly knownv as gas engines.

` "UNITED STATES PATENT GFFTCE.

CHARLES SELBY HISEY, OF AURORA, INDIANA.

GAS-ENGINE.

SPECIFICATION forming part of Letters Patent No. 514,713, dated February 13, 1 894.

i Application filed September 17, 1892.. Serial No. 446,128. (No model.)

To aZZ whom/'it may concern,.-

Be it known that I, CHARLES SELBY HIsEY, a citizen of the United States, residing at Aurora, in the lcounty of Dearborn and State of Indiana, have invented certain newand useful Improvements in Gas-Engines, of which the following is a specification.

My invention pertains to lthat class of moltors in which a piston is reciprocated within `a cylinder by means of force generated by the explosion of gas, or a mixture of gas and air,

These engines are f so arranged that the explosions which furnish the motive power for the piston take place at the end of every other revolution, the momentum of a fly-wheel being relied upon to carry the engine through between the explosions.

Gas engines are usually actuated by means of a force generated by thev explosion of a mixture of gas vand air. For successful and economical operation it is essential that the proportion of'gas and air admitted should be substantially constant.

The object of myinvention is to provide improved means for operating the valves that control the admission of the airand gas, and

means for making and breaking the electrical connections for igniting the gas in the piston cylinder. 1

In the drawings: Figure l is a side-elevation of a gas-engine embodying my invention, the upper part and piston being shown in slection and the latter `in a position midway of preceding figure. Fig. 5 is ad-etail side-viewv its travel. Fig. 2 is a complete side elevation,

complementary to Fig. l. Fig.- 3 is a frontelevation-of the engine as it appears from the right of Fig. 1. Fig. 4 shows the upper part of Fig. 3 in section, the line of the latter'running through the center of the cylinder and the point of view being the same as in the of contact pieces which may be used for effecting the ignition electrically. e Fig. 6 is a top-view of the cylinder.

, A is the frame, a its base anda a stand ards extending therefrom and carrying in suitable bearings the main shaft B. This shaft extends beyond its bearings on each side and carries on one end a governor C and on the other end a ily wheel D and driving pulleyE.

F isthe piston cylinder which is surrounded by a water jacket f. Y

G is the piston which is connected with a crank b' on the main shaft by a connecting rod Hqis a gas reservoir from which the gas passes through a'pipe h, controlledby a valve h', a passage f and port f2 to the cylinder, its admission being regulated lby valve I. The air is admitted through a pipe J, preferably having its intake within the base a, a passage f3 and the port f4 its admission being regulated by the valve I preferably carried by the stem which carries valve I.

I2 is theexhaust valve yand f5 the exhaust port. For operating these valves I provide a counter shaft' L'driven from the main shaft by a 'train of gearing ZJ, m, Z, the intermediate gear m being mounted upon a stud a2 upon .the frame and the train being so arranged as to revolve shaft L once for two revolutions of the main shaft. Upon shaft L are fixed cones Z Z and Z2 Z2. 4 Y

' N N are rods connected with and adapted .to actuate the stems of valves I, I and I2, slotted at n, and taking over shaft L. .These yrods are provided with rollers n n2 adapted to ride respectively uponthe cams Z and Z2. As the shaft L is rotated the cams Z contact with rollers n and pull the rods N downward thereby opening lthe valves and the cams Z2 contact with rollers n2 and 4lift Ythe rods N thereby closing the valve, the cams Ybeing so placedv that the inlet valves open as the exhaust closes and vice versa.

It will be observed that the valve operating mechanism is positive being directly con trolled bythe camsv and that springs and other less reliable machine elements are dispensed with. As the piston moves downward valves I and I open, the engine acting likea suction pipe and drawing in gasl and air through ports f2 and f3, the gas and air being mixed in their passage to the cylinder. On the up-stroke the piston compresses the mixture which is ignited and explodes as the piston starts upon its downward stroke and while the mixture is substantially at its greatest density. The piston is drivenvdo'wn by the impulse of the explosive and inthe next upward stroke expels the exhausted gases l through the exhaust port which has remained IOO closed during the two preceding strokes. For the purpose of automatically regulating the gas and air supply I place a valve h2 in the passage between the gas reservoir and the inlet valve and a valvej2 in the air pipe between the intake and the inlet valve andconnect them with a governor in such manner that as the speed of the engine increases beyond the normal the cylinder supply is diminished and as the speed of the engine decreases the cylinder supply is increased. The valve stem, h3 of valve b2is provided with an extension h4 mounted in suitable guides and carrying at its free end a roller h5. The valve stem jsof valve ,i2 is also provided with a roller 75. The preferred form of governor consists of a hub c secured to the main shaft. From this hub project arms c in which are bearings for the pivots c2 of angle levers c3. Onelimb of each of these angle levers carries a ball or weight c4 and the otherlimb of each le ver engages with and actuates a plate c5 arranged to slide in ways in the hub c and carrying a cam c6, the cam surface of one of the sliding plates being arranged to contact with roller h5 and actuate valve stem h3 while the cam surface if the other is adapted to engage with roller js and actuate valve stemj. The pivots c2 upon which the angle levers c3 are rigidly mounted carry arms c7 the outer ends of which are connected by a spring e8 tending to draw the free ends of the arms toward each other. Springs h and je may be employed to hold the rollers h5 and j5 in constant con tact with the cams on the sliding plates. The cams and rollers are so placed that the valves h2 and .7'2 will be actuated concurrently. It will be seen that an acceleration of speed and the consequent departure of the balls from the axis of rotation draws the sliding plates outwardly thereby permitting the rollers to contact with the lower portion of the cam Surface and the regulating valves to approach their seats while a decreasing speed and the consequent approach of the balls to the axis of rotation forces the cams inward and the valves apart from their seats. In this manner the gas and air supply is automatically regulated in proportion to the speed of the motor.

I have illustrated electrical connections for ignitiug the gas. Upon shaft L is a cam Z3 adapted to engage with a contact ai upon the Projecting from the pistou is a conframe.

tact g adapted to engage with a contact O which takes into the piston cylinder thro ugh an insulating bushing o. Contact ai is connected with one of the conductors and contact O with the other. The cam Z3 is so adj usted upon the shaft that it contacts with a,3 at the second up stroke of the piston while contact g8 engages with O as the piston reaches its highest position. Connection is then made, the engine serving as part of the conductor. As the piston starts on its downward stroke the circuit is broken and the spark ignites the gas.

I have illustrated my invention as applied to an upright engine but it may be embodied with but formal changes 'in an engine of the horizontal type.

I claim- 1. The combination in a gas engine of a gas inlet pipe, an air inlet pipe, valves in each of the pipe valve-stems whereby the valves may be actuated, rollers carried by the valve stems, a governor consisting of a hub, ball carrying angle levers pivoted thereto, sliding plates adapted to be reciprocated by the levers, and segmental cams upon the sliding plates adapted to engage with the rollers on the valve stems, substantially as and for the purpose specified.

2. The combination in a gas engine of the gas inlet pipo h, a valve located therein and provided with a valve stem h3 having an extension h4 carrying a roller h5, the air inlet pipe J, a valve located therein havinga valve stem j3 carrying a roller .75 and the governor C provided with movable cams adapted to engage with the rollers, substantially as and for the purpose specified.

3. The combination in a gas engine, of a cylinder, an electrical contact situated therein, a piston carrying a contact adapted to engage with said contact in the cylinder, a gas inlet pipe, an air inlet pipe, valves in each of said pipes, rods connected with the valve stems, a counter shaft, an electrical contact in close ,proximity thereto, cams mounted on the shaft adapted to engage with the rods and the contact, substantially as and for the purpose specified.

CHARLES SELBY Il ISEY.

Witnesses:

ARTHUR GAMBELL, JAMES N. RAMsEY.

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