US1016764A - Rotary gas-engine. - Google Patents

Description

H. R. NOYES.

ROTARY GAS EN APPLIGATION FILED r GINE.

Patented Feb. 6, 1912.

2 SHEETS SHEET 1.

H. R. NOYES.

ROTARY GAS ENGINE.

APPLICATION FILED 113.13, 1909.

1,16,764. f Patented Feb.6,1912.

T 2 SHEETS-SHEET 2.

I Zh Mentor:

HAZLEHURST R. NOYES, 0F SAVANNAH, GEORGIA.

Ro'rAnY GAS-ENGINE.

Specification of Letters Patent.

Patented Feb. 6, 1912.

Application led February 13, 1909. Serial No. 477,617.

To all whom t may concern Be itknown that I, HAzLEHURs'r R. Norns, a citizen of the United States, and resident of Savannah, and State of Georgia, have invented certain Improvements in Rotary Gas-Engines, of which the following is a specification.

My invention. relates to gas engines, and more particularly to rotary gas engines of the' two-cycle type, wherem gas generated from gasolene in a vaporizer, or other gas, may be economically and eliiciently used as a motive agent.

My object is to provide a rotary gas engine of the two-cycle type, having a minimum number of part-s compactly and simply arranged, and adapted to furnish motive power at a minimum cost.

With this object in view, my invention consists in the novel construction and combination of parts, as hereinafter described with reference to the accompanyin drawings, and more particularly pointe out in the claims. r

In the drawings: Figure l is a central transverse section -of an engine embodying my invention; Fig. 2 is a longitudinal section thereof; Fig. 3 is an end elevation; Fig. 4 is an end elevation of the rotary carrier or abutment; andv Figs. 5 and 6 are details of the sliding pistons.

Referring to the drawings, in which the same reference characters relate to the same or corresponding parts in all the views, mounted within a casing E is a rotary carrier or abutment F secured to a driving shaft G journaledv in suitable bearings in the heads E closing the ends of the casing E. Extending from the opposite sides of the casing E are suitable lugs or ears H, throu h whichpass bolts I into a suitable bedate or foundation I forming the support for the engine.

The rotary carrier F is of circular cross section, and preferably cored or recessed, as shown at P, on opposite sides, to lighten the same, and is provided with suitable packing on the opposite ends bearing against the headsl E of the cylinder, as usual in this type of engines.

The interior of the casin E isa mixed contour of a circular arc and an ellipse, the upper portion for slightly more than ninety degrees, or ap stituting the clrcular arc, and the remainder county of Chatham,

Figs. 5 and duct the mixed air and roximately a quadrant, c on-l following the contour of an ellipse. This rot-ary carrier or abutment F is in close contact throughout the' circular arc at the top, and in tangential Contact only at the bottom, thus dividing the casing into two chambers Q. and Q on opposite sides of the carrier or abutment, of substantially crescent shape, as shown clearly in Fig.- 1, one of these chambers serving as a compression chamber and the other as an explosion chamber. Slidably mounted in suitable recesses at equidistant points around t-he circumference of the rotary carrier are three pistons L,

L2, L3, each of which is composed of twoV sections dove-tailed together, as 'shown in- 6, two springs N bein seated in recesses in the opposite sections .1n alinement, as shown in Fig. 6, tending to press the sections apart, thereby maintainin the edges in contact with the cylinder hea s.

In order to press the piston outward when the engine is at rest and atthe beginning or commencement of the rotary movement, I provide two lhelical springs M seated in recesses O in the piston wings, and having' their inner ends bearing upon the bot-toms of the recesses in theA rotary carrier. After the engine is in operation, the function of these springs is afl'ected by the centrifugal force, which tends to throw the piston, wings outwardly against t-he interior surface of the chamber. The walls ofthe Casing or cylinder E are hollow, providing a space K for the. introduction of a cooling medium, such as Water, as ordinarily used in this type of machines.

, The letter A indicates an inlet pipe which is adapted to receive its supplyfrom a vaporizer and mixer,

gas through an inlet opening A" into the compression chamber Q of the engine, the latter being connected through a port B and Ipipe B to the transmission valve chamber T', containing the transmission valve T whlch controls the transmission of gas mixture from the said compression 'chamber Q to the explosion chamber Q by way of the pipe C and port C. vThe pipe C is provided with an ordinary check valve V to prevent the back-flow of gas from said explosion chamber. Lo-` cated at a vsuitable dist-ance from the admission ort C of the` explosion chamber is a suitable spark plug S which is adapted to spark and fire the explosive mixture as not shown, and con-.

the ,piston wings L, L2, L3 successively pass the same, the sparking device shown forillustration simply being of the jump-spark type. At the opposite end of the vexplosion chamber to the inlet admission port C, is the exhaust D, through which the' spent gases pass into the atmosphere or elsewhere.

The piston wings L', L2, La are so disposed that, as each wing passes the gasy inlet port A, it closes the chamber Q to further admission of gas and begins to compress the gas contained therein, continuing such compression until the piston in advance orv the active pressure lpiston has passed. the compressed gas admission port C and approaches the sparking device, the parts being so proportioned that this point will be reached when the active compressing piston has traveled about three-quarters the distance between the gas admission port A and the compressed gas outlet port B. At this time the valve gear operates to open the'valve T to permit the compressed gas to pass into the explosion chamber. A

Referring to Fig. 3, it will be observed that this valve gear comprises essentially a three-point cam R mounted upon the shaft coperating with an oscillating rod U' pivotally supported on the cylinder head E and normally pressed into contact .with the cam by a spring W, which rod is connected by suitable means, such as a link u, with a sleeve X slidably mounted on the cylinder head E carrying, at its upper end, a pivoted trip adapted to be operated by a stop y fixed to the cylinder head. This trip is so arranged, it will be observed, as to engage a sleeve y carried by the valve rod Y, a spring a," interposed between the sleeve y and the lower end of the valve chamber T operating toquickly seat the valve T when the cam has passed the admission point, and the trip w released from the sleeve y.

It.A will be.v observed from the to provide a simple and ecient -compression of the gas by one sliding piston, the transfer of such compressed gas into an independentr explosion chamber where the successive volumes' of com ressed gas are ignited and exploded in rapid Vsuccession as the series of plstons pass, first, the gas admission port of the gas compression chamber, second, the compressed gas admission port for the explosion chamber, and, third, the spark plug. The impetus given to each piston as ,the explosion occurs is sufiicient to impart rapid rotative movementv to the rotary "carrier, and thereby' to the drive shaft.

I claim as my invention:

1. In a rotary gas engine, the combination of a rotary carrier, a casing in which said carrier is mounted so as to rotate and 'with whose inner face the carrier contacts atl opposite points `so as to dividethe inteforegoingv descriptlon that the arrangement is such asl rior of the casing into two chambers, one on each side of the carrier, an inlet and outlet for each chamber whereby one chamber will constitute a compression chamber' and the other a combined explosion and exhaust chamber, a series of pistons slidably mounted within the carrier and lcontacting at all times with the inner surface of the casing, a valved connection outside of the chambers between the delivery of the compression chamber and the inlet of the'explosion chamber, means whereby the rotating carrier is caused tooperate said valve at intervals, and means for exploding the compressed mixture in the explosion chamber whereby it will drive forward the piston in advance of it and will cause said piston to drive from the exhaust the spent gases ahead of it.

2. In a rotary gas engine, the combination of a casing with an internal contour comprising Aan elliptical section and approximately a quadrant of a circular sectlon, a rotary carrier mounted in the casing with its periphery in close contact with t e circular section -and in tangential contact at the opposite side ofthe casing whereby said carrier divides the casing into two chambers, one on each side thereof, one chamber servingas a compression chamber and the other as an explosion chamber, a plurality of sliding pistons mounted in said carrier and in const-ant contact with the inner face of thecasing, an inlet and outlet communicating with each lchamber within the casing, a valved passage connecting the outlet of the compression chamber to the inlet of theex plosion chamber, means whereby the carrier is caused to operate the valve in said passage at intervals, and means for exploding the mixture in the explosion chamber.

3. In a rotary gas engine, the combination with a casing of a drive shaft, a rotary carrier mounted upon said drive shaft and dividing the casingI into twov chambers on opposite sides of the carrier, pistons slidably mounted in lsaid carrier, a conduit connecting the two chambers, a casing having a valve therein interposed in said conduit between the chambers, a valve rod by which said valve is carried, a cam on the drive shaft for operating the valve, connections between the valve rod and the cam whereby the valve is` operated and caused periodically to permit the How of compressed gas said carrier, a conduit connectin vthe two chambers, a Ivalve` interposed in sald conduit between the chambers, a valve rod, means acting thereon to close the valve, a cam on the drive shaft, a slide operated by said cam, a trip on said slide for engaging the valve rod, and a Stop for engaging said trip andv releasing it from engagement with the valve rod when the Valve has reached the limit of its opening movement, thereby p( :mitting low of compressed, gas from one chamber 10 to the other vof the casing, and means for In testimony whereof, I have signed my name to this specification, in the presence of two subscrlbmg Wltnessevs.

I-IAZLEHURST R. NOYES.

Witnesses:

WM. L. GIGUILLIAT, T. F. CooK.

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