US985669A - Rotary engine. - Google Patents

Description

D. N. GREEN. ROTARY ENGINE. APPLICATION FILED AUG. 28, 1909.

Patented Feb. 28, 1911.

2 SHBETS-SHEET 1.

WITNESSES Arm/mm D'. vN. GREEN. ROTARY ENGINE. APPLICATION FILED AUG. 28, 1909.

Patented Feb. 28, 1911.

ATTORNEYS which the folloivingis a specification.

' propelling which may be pointed out in the appended claims.

'State of Ohio, have invented certain new'and which are known as rotary engines, and vit consists in the combinations, constructions h lowering the panying drawings in whichspring; arm for actuating the abutment valve.

2, it will be seen that sragi s grnnr OFFICE.

DAVID NEWTON GREEN,

games.

To all whom .fit may concern: it'known that I, DAVID Nnwroiv GREEN, j a citizenofthe United States, anda resident of'Sunbury,,in the county of Delaware and i useful Improvements in Rotary Engines, of My ln-vention relates to improvements in engines,- more partlcularly those engines and arrangements 3 herein described and claimed. An object of my .invention is to providea device with novel means for delivering the steam, compressed-air, water or any other suitable medium.

Afurther object of my invention is to provide a novel-form of means for raising and abutment valve in order that the rotating power wheel with its shoe may pass underneath it.

Other objects and advantages will in thefollowing features of the appear, specification and the novel device will be particularly My inventionis illustrated in the accomt ROTARY ENGINE.

Specification of Letters Patent. Application filed August 28, 1909.

lgure 1 1s a central vertical sect-ion through the device, the power wheel being shown in side elevation; Fig. 2 is a central vertical section atright angles to Fig. 1; Fig. 3 is a side view of one of the fly wheels, the shaft, and engaging cam member; Fig. 4 isa plan view of the oscillating abutment valve; Fig. 5 is a section along the line 55 of Fig. 1, and Fig. 6 is a detail view of the.

Referring now more particularlyto Fig. the main frame of the engine is composed of two opposed parts A and B of a substantially cylindrical shape. These parts are provided with the peripheral flanges a and. b which are placed in contact and are secured together by means of bolts or screws C, see Fig. 1. Each of the parts A and B has an annular recess 51 and 72 respectively and a central recess ,n and 1) extending inwardly from the exterior as clearly shown in Fig. 2. The frame or casing formed. of. the two opposed members A and B is supported upon an areshaped base D which is provided with a or SUNBURY, 01110.

Patented Feb. Serial No. 515,043.

cont-acting flanges a and b of the lower part of the casing in key Z. Referring now to the member A, it will be seen that the annular channel a is pro- :vided with tworings M and P, the latter being provided with member B is provided rings Q and S.'the latter having the packing ring 8. The power wheel L is contact with the rings P and side thereof. The rings are a lateral direction by means ing screws 1' which bear on t M and Q. as shown in Fig. 2.

The oscillating abutment valve is illustra 'P' J in Figs. 1, 4 and L-. haped member V having at its rear end two projections u and 1' arranged to straddie the flanges 11 and I) of the members A and 13 as clearly shown in Fig. 5. The exwith a similar set of I S on either of the adjusthe outer rings tension 1 is threaded to receive the end of 85 a pipe n!- tln-ou-gh which the motive fluid is conveyed. A pivot pin 'l. passes through the flanges a and I) and is securely held by means of the set screw 2. One end of this pivot pin forms a l awhile the other end forms a bearing for the extension 0 as shown in Fig. A channel I- leads from the pipe 112-, see Figs. 4 and 1. down to the lower end of the valve V. The lower end of the valve V abutmentagainst which the steam or other motive flu id presses in forringthe wheel or rotary piston L around. On the bottom of the abutment valve is a wear-resisting shoe '1' which in and which is designed to protectthe valve itself. The oscillating abutment valve is arranged to project into an opening in the topot' the casing Aland B so as to deliver the motive fluid to The free endo'f the oscillating valve V is arranged to swing down into contact with a bearing plate W which is provided with acentral groove (Z arranged to receive the and F respec- 6O rnily secured to the shaft by means of the a packing p. The 7( v in close adjustable in It consists of an 30 raring for the extension t'orms the ay be replaced when worn the inner chamber 0.105

may be turned so as to bring the abutting up any wear.

Y and B while an inwardly projecting arm 'n ried down through the channel a and out the arm; The two arms y and y are conat the sides as shown in'Figs. 1 and 2. The

resilient backing to. From an inspection of Fig. 5 it will be seen that the pivot pm T edge of the valve V nearer or farther away from the bearing plate in order to take The power wheel or rotating pisto'n'.L is provided with a shoe J which is preferably of resilient material and is arranged'to be clamped to a. spring member Nsecured to the periphery of the wheel L. The end of the spring member is provided with a portion it adapted to 'bear against the shell A serves for the purpose of attaching theshoe J. The latter is adapted to project into a recess 7' in the periphery of the wheel.

The means for raising the oscillating valve is shown in-Figs. 2 and 4. It consists of a crank :22 of the shape shown in these figures which is pivotally mounted on anextension X of the member B. One end of the crank projects through the portion '0- of the valve V' while the other end is secured 'to anarm y'of a tw0-part .cam Y. The other portion of the cam member is provided with a slot 3 into which one-end of the arm 3 projects, the end of the crank :22 being disposed in the alined openings in the members Y and,y As stated before the member 3 is securely fastened to the member m but the member 3 is loosely connected with the crank thereby permitting, the movement of the latter with respect to nected by means of a spring y, the laterally extending portion 1 of the arm y being held in normal engagement with the memher 1 as clearly shown inFig. 6. The member y is provided with a cam roller y which is disposed in a groove 7.: in the side of the This groove is of a shape shown in Fig. 3 and has on its inner edge a cam surface L over which the roller 3 rides thereby causing the lifting of the latter. and consequently the cam Y. The shifting of; the cam Y causes the rotation of the crank :27 and consequently a swinging of the oscillating valve about its pivots '1. thus raising the abutment valve whenever the cam roller rides over the cam surface k From the foregoing description of the vari: ous parts of the device the operation thereof may be readily nhderstood. The steam, compressed-air or other fluid motive power is supplied through the pipe 112- and is carat the opening '0 The fluid fills the space 0 and presses on the shoe J thereby driving the wheel around in the direction indicated by the arrows. The exhaust gases are driven by the shoe up through lhe opening Z underneath the oscillating valve and out groove in the wheel K is so arranged that the cam roller ;1 is actuated just before the shoe J is about to engage the valve V thereby raising the valve and thus doin away with the loss of energy which woul result from the impact of the shoe against the valve. As soon as the shoe has passed, the" cam roller falls back into its normal posi- 'tion nearer the center of the shaft thereby stated before are made adjustable so as to bring them into close if desired. It will be observed that when the cam contact with the wheel arm has brought the abutment valve down in contact with the power wheel the upper member 1 stops, while the lower part, owing to the shape of the groov 70 goes lower, thereby putting a tension on the spring. This insures a good contact between the abutment valve and the power wheel. Now,

when the cam roller raises the member 7 the latter engages the lateral portion 3 7 of the upper member'g thereby raising the latter and the abutment valve.

I claim:

1. In a rotary engine, a casing comprising two hollow members secured together at their outer edges and provided with interior annular channels, bearing rings secured in' said channels, a power wheel mounted within said casing and arranged to contact with certaln of said rings, fan abutment valve provided with a pair of extensions arranged to straddle the upper edges of the casing members, a pivot pin carried by the casing and arranged to extend into said. extensions, one of said extensions being hollow to deliver motive fiuid to said abutment valve, and means for-adjusting the position of the bearing rings with respect to the power wheel.

2. In a rotary engine, a fly wheel provided with a groove, a pivoted abutment valve provided withan interior channel for delivering motive fluid, a crank connected With said abutment valveon one end and bearing a twopart cam member at the other,

a spring for holding the parts of the cam in normal engagement with each other, and

a cam roller carried by one of said parts I and arranged to travel in the groove in sa d fly wheel.

v3. In a rotary; engine, a casing comprising two hollow members secured together at their outer edges, apower wheel mounted vided with a pair of extensions arranged to straddle the upper edges of the casing members, a pivot pin carried by said casing,

l l O.

' within said casing, an abutment valve prosaid pivot pin having; reduced cylindrical end portions eccentric of the main portion, arranged to pivotally engage the extensions of the abutment valve, and means for securing the pivot pin in adjusted positions.

4. In a rotary engine, a casing comprising two hollow mem rs secured together at their outer edges, a power wheel mounted within said casing a hollow abutment valve provided with a pair of extensions arranged- ,to straddle'the upper edges of the casing members, one of said extensions having a channel for the delivery of motive fluid into the interior of said hollow abutment valve, a pivot pin carried by said casing and having reduced cylindrical ends eccentric of the main portion of the pin, arranged to pivotall engage said extensions, a set-screw 'carried y said casing and adapted to retain 1 the pivot pin in its shifted positions and a j removable bearing plate arranged to be engaged by said abutment valve.

5. In a rotary engine, a casing provided with an opening, an abutment valve carried by said casing having a passage for the pur pose of delivering motive fluid to the interior of the casing, one end of said.abut- Inent valve having .a pair of extensions, and

a pivot pin secured to said casing and having-its ends passing into each'of said extensions for pivoting the valve one of said extensions having a lateral passage in line with said pivot pin and communicating with'the fluid delivering passage in the in-- terio'r of the valve. 1

'= ,l DAVID NEWTON GREEN.

Witnesses FRED KEMPTON, ELMER Pnossnn.

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