US1350168A - Rotary engine - Google Patents

Description

C. MULINEX.

ROTARY ENGINE. APPLICATION FILED Nov. 4, |918. 1,850, 1 68, Patented Aug. 17, 1920.

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ROTARY ENGINE.

APPLICATION F|LED Nov. 4, 1918.

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CHAISE MUL'rNEX, or ToLLEY, NORTH DAKOTA.

ROTARY ENGINE.

Specication of Letters Patent.

imntea Aug. 17, 1920.

` Application filed November 4, 1.9718. Serial No. 261,042.

To allwhom t may concern:

Be it known that I, CHASE MULINEX, a citizenof the United States, and a resident of Tolley, in the county of vRenville `and State of North Dakota, have invented a new and Improved Rotary Engine, of which the following is a description.

My invention hereinafter vreferred lto as relating to a rotary engine, is adaptedl for embodiment in eithery an engine or a pump and is adapted tor employ 1Vany suitable motive fluidsuch as steam, air,vor gas.'` -The invention more particularlyrelates to a rotary engine employing radially disposed slidable pistons.v `Y :i 1 l The general object of the invention is to provide an engine ofthe indicated type improved in various particulars Iwith a view to increase the eliciencyofthe engine; to provide for the .automatic sliding of the pistons tothe power position and return without producing aside pressure thereon such as would cause a'binding Vof the pistons in the rotor; and .to .provide a constructionV of acharacter to prevent leakage between the Vrotor and stator;

Further objects and advantages` of the invention will appear as. the..description proceeds.- u l p v Reference is to be-hadto the accompanying drawings forming a part `of thisV specification, i-t being understoodV thatjtherdraw-Y ings 'are merely illustrativeof .one example of the invention.

-Figurel yis a cross section. ofY an engine constituting 4one embodiment of -my inven- K tion; u y

Fig. 2 is a partly sectional side .elevation thereof; v l v N Fig. 3 is a central longitudinal section of the rotor; Y n Y f Fig. tis .an `edge .view .of one 4of; the pistons; a

Fig. Y5 is .a fragmentary side view of `one of the pistons, parts being broken away ,and others in section;

Figa-.6 is a partial side view ofthe-ecceni tric guide wall for the pistons;

Fig. 7y is an inner -ace vievs7 .of oneof the heads of the cylinder or working chamber.

In carrying out my invention in accordance with the illustrated example, a stator is provided including a novel case 10 within which is arotor 11 on a shaft 12,r Said rotor has radially disposed pistonsl slida.` ble in slots 14 and the rotor has at the opposite ends thereof concentric chambers or recesses 15 directly about the shaft 12 to receive a motive fluid Aand communicate with the several slots 14.l -An eccentric guide wall 16 is disposed within the casing 10 between the same and the periphery of the rotor 11 to be eccentric to both the casing and rotor. The casing 10 and rotor 11 are concentric and the chamber 20 formed therebetween and in which the guide wall 16 is disposed, is a concentric chamber of equal dimensions'throughout. Said guide wall has slots 17 or equivalent perforations to establish free communication between the interior and exterior of said guide Wall, so

that notwithstanding the eccentricity of the guide wall 16, there is no unequal pressure at the opposite sides of the pistons.

The pressure in the chambers 15 and slots 14 forces the pistons .outwardly for maintaining said pistons in contact with said guide wall. The power arc through which the pistons 13 move at their maximum radial projection over the surface of the wall 16 is imper'forate as at 18 and diametrieally Aopposite said power are is anv imperforatey area 19iover which the pistons move in returning. rlhe areas as at 18 and 19, itwill be observed, are true arcs, but of different 'radius,.so that the pistons have no radial movement duri-ng the work arc in the moving over the area 19. T he concentricchanin ber 20 for the motive lfluid has an inlet 21 and an exhaust 22. These extend, in the illustrated examplefthrougli flanges 23, 211 on the arcuate'plate formingthe return surface at 19 for the pistons. Motive fiuid lfrom anysource may be supplied through inlet 21, there being indicated a` pipe 2 5 having valves 26, 21 between which valves a branch 28 leads from said pipe V25 to .one

ofy the chambers 15, the pressure fluid ythereby reaching the various slots 14, a valve 26 is provided in the branchv pipe 28.` Provision is made for packing the rotor 11 at ythe ends, for which purpose'circular packprevent leakage.

ing strips 29 are provided on the inner face of heads 30 provided inthe stator, said strips being pressed outward by springs 31 at theback of the same. 'In' order to pack the pistons 13 at the side edges, I provide in each side edge a packing strip 32 beneath which are springs 33. VThe strips 32 have a length greater than the maximum stroke of the pistons to insure an effective packing of a piston at the sides by extending over the surfaces of theV heads l30 radially outward of outer strip 29 and between the latter and the circular guide 16, Vand thereby In addition to the packing elements 29, 32, I Vprovide packing strips 34 in the rotor 11 in the opposite walls of the slots 14, there being springs 35 at the lback of said strips 34 to press the same against the opposite side surfaces of the pistons to prevent leakage of the Vmotive fluid through the slots.

By the described arrangement the circular packing elements 29 prevent leakage radially outward from a chamber 15 between the rotor 11 and the opposite cylinder heads. The packing elements 32 prevent leakage annularly at the periphery when the pistonsare projected into the chamber 2O and the elements 34 prevent leakage from thel chamber 15, through the slots 14. In starting the engine the valves 26 and 26 are opento supply a motive fluid through the branch 28 to the radjacent chamber 15 and' slots 14, thereby causing the pistons 13 to be subjected to a pressure tendingto force them radially outward. The valve 27 is then opened to direct'motive fluid to the chamber 2O through the inlet 21, thereby i causing the pressure of the same to act on the pistons to turn the rotoi, the motive Y fluid exhausting at the opposite'si'de of the power area through the perforated Vguide wall 16 andY exhaust 22. lith the engine in Ioperation centrifugal force will throw the pistons radially outward only subject to the guiding action of the wall 1(3,and the valve V2G may thenl be closed.

I would state in conclusion that while the illustrated example constitutes a practical embodiment of my invention, I do not limit myself strictly to the mechanical detailsY herein illustrated, since manifestly the same can be considerably varied without departure from the spirit Vof thel invention in the appended claims.

Having thus described my invention, I claim as new, and desireto secure by Letas defined ters Patent:

1. A rotary engine including a cylindrical casing, a rotor concentric. in the casing and spaced therefrom to providean intervening concentric chamber adapted to receive a mo-` tive fluid, radially disposedpistons carried by the rotor and slidable therein, a cylindri- -cal guide wall in said chamber and eccentric rotor and casino to the motor and rotor, saidwall presenting l imperforate arcuate areas approximately diametrically opposite each other, over which areas the" pistons operate -without radial ber having an inlet and an exhaust for motive fluid'respectively at opposite sidesV of that imperforate area over whichthe pistons travel in their position of Zero projection. f j Y 2. A rotary engine including a cylindrical casing, a rotor concentric in the'casing and' spaced therefrom to provide an interveningv Vconcentric chamber adapted to receive-a inotive fluid, radial pistons carried by the rotor and slidable'therein, an eccentric cylindrical guide wall in said chamber presenting imperforate areas constituting arcs of circles diametrically opposite each other, over which areas the pistons operatewitho'ut ra- Adial movement inV their positions of maximum and zeroY projection respectively, the remaining portions 'of said guide wall being 1 perforated sothat the pistons'move'over-the perforated area of the wall in their for-` ward and return strokes to and from the position of maximum projection, said chamber having Van inlet and an exhaust forv motivev lluid respectively at opposite sides of. that travel in their position of'zero projectioni 'imperforate area over which Vvthe pistons 3. A rotary engine including a casing,

presenting heads at opposite ends,a rotor concentric Vwith the casing and spaced therefrom to provide an interveningconcentric chamber, said rotor having depressions i at the ends adjacent to the axis and having radial slots extending `from said depressions toV said concentric chambeizl'pistons sli'dable in said slots, an inlet and an 'exhaust for Y said'chamber, a perforate guide wall in cir-- cular form Yin said chamber eccentric to the inlet pipe to one of said depressions,'and valves in said branchpipe and in said fluid l a fluid supplyl pipe VVcon-VV nected -with said inlet, la branch 'from' saidV supply pipe between said branchV pipe and Y* l said inlet.

4. A rotary engine including` a casing presenting heads at opposite ends, a rotor l concentric with the casing andspaced therefrom to provide4 an intervening concentric chamber, said rotor having radial slotsfextending to said concentric chamber, pistons slidable in said slots, an'inlet and anlexhaust for saidchamber, a perfoi'ateguide wall in circular form in said chamberec'centric to the rotor and casing, means to 'supply motive fluid to said chamber and radial slots, and packing means for the pistons, said packing 'means including annular spring-pressed strips on the heads of the casing at the inner faces and contacting with the side edges of the pistons radially inward from the outer ends of the latter, spring-pressed packing strips carried by said pistons at the side edges thereof radially outward from the said strips, land springnp'ressed packing strips on the rotor in the opposite Walls of the slots and contacting with v'the respective pistons at opposite sides. s

' CHASE MULINEX.

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