US1332427A - Rotary engine - Google Patents

Description

IVICKEE COOPER.

ROTA-Ry ENGINE. n APPLICATION FILED .IMLZII 1919.

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IvIcKEE COOPER ROTARY ENGINE.

l APPLICATION FILED JAN. 2i. 1919. LSQIQIAIQIIW .mmm Mar. 2, 19.20.`

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'MQKEE COOPER, OF ASHEVILLE, 1\]' ORTH CAROLINA.

@OTAR/Y ENGINE'.

Appication led January 21, 1919.

A further object ot the invention is to` provide an improved combustion chamber in place of the combustion chamber disclosed inthe application above referred to whereby the combustion chamber is scavenged completely of burnt gases subsequent.

to each operation thereby permitting the explosion ot an undiluted. fresh charge ateach operation or cycle ot' operation of the machine.

A still further object of the invention is to provide an improvement in myrotary engine set forth above in which 'the advantages are accomplished through the medium of combustion chambers in the nature of auxiliary cylinders located' above the pump cylinders, and pistons operating vin both cylinders and connecting in tandem fashion whereby the charge is transferred from one cylinder to the other and exploded and subsequently carried to the rotor of the engine in a manner which will be obvious as the description proceeds.

A still :further object of the invention is to provide a form of valve to be used in the Vpiston and other parts ot myimprovement whereby to secure a close and tight fitting joint whenA disposed in closed position and whereby to insure the uniform wear of the valve. 4

in addition to the foregoing, this invena tion comprehends improvements in the de tails of construction and arrangement of parts, to be hereinafter described and par`l l ticularly set forth in the appended claims.

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In the accompanying drawings in which similar and corresponding parts are designated by the saine characters of reference Specification of Letters Patent.

'Patented Mar. 2, 1920.

serial no. 272,392. I

throughout the severall views in which they appear- Figure 1 isa view in side elevation ot af rotary engine embodying `my improvement.A

Fig. 2, is a vieuT thereof in plan;A

Fig. 3, is a view partly in section takenf4 on the line 3-3 of Fig. 2.

Fig. 1i, is a similar View partly in section taken on the line H of Fig. 2.

combustion chamber piston.

Fig. 6, is a bottom plan view of one of the valves and.

Fig. 7 is a vertical sectional view through f the rotor and casing. A

Mounted on a base plate l are the upright cylinders. 2, herein shown as four in .num-

u u n n i Fig. 5, is a detail vlewiin section ot ther ber and cast en bloc. Pistons 3 reciprocate.

shaft which need not be illustrated. lThe crank shaft is continued to the rear and appears at the left of Fig. l at 5 where it constitutes the driving shaft, and its cranked Afront end rotates within the crank case illustrated at 6. Located at each side of the cyl'- inders and extending longitudinally of the therein as shown in Fig. 3 and the connecting rods 4L lead downward to a main crank engine is a tank 8, both ot which are of considerable size and strength and are closed 'at one end as at 9 and connected at the'other by couplings 10 with a cross pipe 11 and a T-coupling l2, from whose stem the motive fluid iows through a'throt-tle valve 13 and piperlei to' a boi; .15 for use Vas described below.v

The motive tluid of ay engine is the eX- panded gases of. combustion, produced by.

compressing ainixture of gasolene vapor and air, and exploding it. rhis mixture is Mounted directly above each pump cylin der is a second cylinder 24, smaller in diameter than the plump cylinder, but correspending in length thereto. The connecting rod 4; of each piston 3 is extended upwardly as at 25 through .a packing gland 26pmontletis provided at the upper end'of 'each cylinderfor combustion chamber 24, and said openings. communicate with branches 28 which lead vto transverse conduit 29 opening into the tanks 8 as shown'in Fig. 2. A plu-- rality of valves are provided 'in each scavenging piston 27, andthe construction as shown'consists in providing a plurality of, downwardly tapering openings 30 lforming; apertures for the passage of as through the piston and also to form valve seats tor the conical valves' 31. AEach of said valves is provided at its lower end with4 a plurality of curved radial arms 32 which serve to Vlimit upward movement of the valve a'nd Aalso for another purpose which .will be presently obvious. `The upper wall of each pump cylinder is alsoaperturedto provide communication between .the interior of each pump cylinder and its respective combustion chamber located thereabove, said openings being indicated at 33 in Fig. 3. Operating ink these openings 33 are conical valves of the construction just described, said valve-s, in a manner similar tothe valves 31 l opening upward. Each cylinder 24 is perforated at one side to'zdmit of thev introduction of spark plug 25 as shown in Fig. 3. f

The rotary portionof my lengine is shown to the left of Eigl l and for a detailed de scription thereof the reader is referred to 'my fao-,pending application mentioned above.

At any rate,'the casing 36 contains a rotor of the type provided with its radiating blades or buckets which receive the impact of gas delivered through pipes 37 entering nozzles 38, said pipes 37 radiating from the distributing box 15. The rotor within the of' a piston 3, ai lcharge of gasolene vapor-- j and air casing is mounted directly upon and keyed to the shaft 5 so that the pump and rotor operate in unison. y

' in operation, uponeach downward stroke is drawn from the carbureter through the branches 21 into the upper end or the pump cylinder and upon the succeeding upward. stroke "or" said piston the charge Vis forced through the openings 33 into the maaier mechanism not shown is operated to cause a spark at the spark plug which ignites `the charge within .the combustion chamber, ycausing the' combustion and expansion of the gases therein. The neXt succeeding downward movementI of the piston 3 and its vscavenging piston 27 obviously causes' the transferal. of the gases from beneath the piston 27 to the upper end of the combustion ,chamber above said piston, and the next succeeding upward stroke of said piston 27 drives the gases from the combustion chamber through the conduits 28 and 29 linto the` piston-A to the other, thereby. cleaning the combustion chamber for the introduction of the next charge. In this manner the incommg charge is undiluted and hence a greater amount of power 'can b e obtained' by means 'of this improvement than would be possible with the .form of combustion chamber shown in my co-pending application. l

It will' also be obviousl thatithis scavenging piston and coperatingfparts may be applied to internal combustion engines l of various'type with considerable advantage. It is desirable to note that owing-to the provision of the radiating blades 32 of the valve described above, each valve, -when lifted has imparted thereto a slight rotary Aseat atdifl'erent points and consequently the wear'upon the valveis rendered more uniform. 4 l

While I have illustrated and described my Imotion which causes the valve to Contact its invention withsome degree of particularity,

I realize that inpractice various alterations therein may be made. l therefore reserve the right and privilege of changing the form of the details of construction or other-y u'i'se altering the arrangement of the` corre?v lated parts ,without departing from' the spirit, ofthe invention or the scope of the appended claims.

Having `thus 4described 'my invention, what claim as new and desire to secure by United.4 States Letters Patent is:

1.- device as specified including a series oi? cylinders, each having inletl and outlet ports, a piston movable in-the cylinders to ldraw a combustible mixture ythrough the inlet port and to expel it through the outlet port, a sei-ies of auxiliary cylinders communicating with the outlet port of the main cylinders to receive the combustible mixture, and being relatively smaller than the latter to cause compression of said mixture in the auxiliary cylinders, ignition means-associated with said auxiliary cylinders to ignite the mixture, and pistons mounted in the auxiliary cylinders, and in connection With the pistons in the main cylinders, to force the products of combustion from said auxiliary cylinders.

2.l A device as specified including main and auxiliary cylinders in communicationl with each other, pistons mounted in said cylinders and connected together so as'to be simultaneouslyoperable, said main cylinders adapted to receive the combustibliA mixture and to force the same into the auxiliary cylinders, which latter are relatively smaller than the main cylinders to edect compression of the mixture, ignition means in said auxiliary cylinders for igniting the mixture, conduits for conveying the products of combustion from said auxiliary cylinders, and a rotor remote from said cylinders and in coinnrunication With said conduits to be operated by lthe products exhausted tlrrougli said conduits. f v 3. A prime mover including a rotor, a

series of cylinders, pistons movable in said cylinders and operated from said rotor, an auxiliary cylinder in communication with each oi' said irst mentioned cylinders, valves controlling communication between the primai'y and auxiliary cylinders of each pair, a piston in each auxiliary cylinder directly connected to its respective main pistoma tank, a connection between said auxiliary cylinders and tank, means for igniting a charge of vapor in the auxiliary cylinders, valves in the auxiliary pistons, and

nozzles directed upon the rotor and fed from `said tank.A

a. .A pri-.ic mover including a rotor, a pump cylinder, a piston movable therein operated by the rotor, an auxiliary cylinder in lil) communication. with the pump cylinder, check Valves controlling said communication, carburetion means in Acommunieation with the pump cylinder, a piston movable in the auxiliary cylinder, said piston having passages therethrough, valvesA in said passages, means for igniting the Vapor in the auxiliary cylinder, a tank in communication with the auxiliary cylinder, and nozzles directed upon said rotor and fed from said tank.

5. A. prime mover including a rotor, a

Lcylinder, a piston movable in -said cylinder and fed from the tank.

6. A device as specified including cylinders and corresponding pistons arranged in tandem, one cylindei of each tandem being larger than the other and functioning as a pump, the smaller cylinder being equipped with ignition means. and constituting.;I the combustion chamber the products of combustion being forced :troni said chamber by the piston therein substantially as described.

7. A device as' specified including1 cylinders and corresponding pistonsiarranged in tandem, one cylinder ci: each tandem being' larger than the other and functioning as a pump, 'the smaller cylinder being equipped with ignition means and constituting a coinoustion chamber, the products of combustion being forced from said chamber by the piston therein, a rotor, and conduits conveyfing the products of combustion from the combustion Vchamber to the rotor for impellinier the latter. .y

n testimony whereof l alicia my' signature in presence of two Witnesses.

iii/reirse coorsn. Witnesses:

Masons Erwin, Guo. S. lnrnonns.

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