US1628162A

US1628162A - Rotary engine

Info

Publication number: US1628162A
Application number: US18603A
Authority: US
Inventors: John A Lehnert
Original assignee: Individual
Current assignee: Individual
Priority date: 1925-03-26
Filing date: 1925-03-26
Publication date: 1927-05-10
Anticipated expiration: 1944-05-10

Description

' May 10,1927. J -AgLEHNERT ROTARY ENGINE Filed March 26; 1925 sweets-shew. 1

INVENTOR Lsyrwsya;

. WITNESSES A'ITQBNEYS.

' May 10,1927. 7

J. A, L HNER'E ROTARY ENGINE Filed March 26. 1925 3 Sheets-Sheet 3 INVENTOR L177. 4 Gan/En"; BY

ATTORNEYS r "wlmg ss I I V UNITED STA Pa sed May 10, 1927.

T'ES PATENT OFFICE. j

Joriu A. translate, or nowaim, son'rn DAKOTA.

' ROTARY ENGINE.

Application iiled March 26, 1925. Serial m. 18,603.

. This invention relates to rotary engines e and has for its object the provision of'a devicewhich includes a plurality of arcuately. shaped cylinders contained in the rotor which are operated through oscillating arms,

the arms inyturn'being controlled by oscillating levers carrying rollers that move in cam tracks;

' A further object of the invention is the provision of a'rotary motor in which the rotor is driven by pistons mounted in arouclosure, being susceptible of such'ch'anges and modifications which shall define no mafeatures otAhe ring 44 of Figure 1..

ately shaped cylinders with the reciprocation of the pistons being controlled by the cam arrangement'actuated cooperatively through cam tracks carried by both the stator and the rotor.

This invention will be best understood from a consideration of the I following detailed description, in view of the accompanying drawing forming a part of the specification; nevertheless it is to be understood that the invention is not confined to the 'disterial' departure from the salient.

he invention as expressed in the appended claims.

In the drawings: Figure 1 is a longitudinal vertical section of the rotary engine taken along the line 1- 1 of Figure 2.

Figure 2 is a transverse vertical section I taken alongthe line 2-2 of Figure 1.

Figure '3 'is a longitudinal vertical section taken-along the line 33 of Figure 2.

Figure 4 is a section ,taken along the line water.

Figure 9 'is an enlarged detail section 'taken at right angles to-the section shown in Figure 5 and disclosing a spark plug of each cylinder; Referring more particularly to the drawings,- 10 and 11 deslgnate the two'sections of the housing of the motor andwhich'comprises a stator. These sections are provided formed annular. groove in the portions 36 116 I adjacent their peripheries with spaced alining chambers 12 of water jackets and the sections are secured together by means of bolts- 13. The inner abutting edges of,;the housing, as shown at 14, have a tongue and-"groove formation in order that the sections may be fitted water-tightand gaskets may be ap-- plied to the interfitting edges as is well known. Each section of the shell has incorporated therein a chamber 15 or 16 which encircles the section of the housing and which is in communication, by means of passages 17, with an annular-chamber 18. The chamher 18 is in communication with 'the' chamhers 12 through passages 17 whilethe chamber 16 is 1n commun1cat-1on w1th an annular chamber 20 in a pair of complementary intel-

fitting rings

21 and 21. The rings are L-shaped in cross section and ring 21 is provided with a groove 2O into which. is re ceived the periphery of one of the circular flanges of ring 21. The portion of thethub 31 adjacent the ring 21*is provided with a socket adapted to receive pins 23 formed on- 21 for locking said ring to the hub. Pins 22 are passedthrough perforations in the cooperating

rings

21 and 21 for locking said rings together whereby the rings will be. revolved with said hub and-shaft 22.

The upper portion of the chamber 18 is connected with apipe 24 which in turn is in communication with a radiator (not shown). The complementary formed rings 25 and 26 form an annular chamber 27 which is in communication with an intake pipe 24", leading'from a source of water under pressure such as a pump (not shown) and driven by the engine. ,These ring sections are similar to the ring sections '21 and 21 and are secured together and to a hub section 32 by the

respective pins

22 and 23. The'shaft 22 is mounted bearings 29 carried by the sections 10 and 11 of the housing. Keyed to the shaft- 22 as shown at-3O are the pair of spaced'hubs '31 and 32.

.- The hub.32 is formed integrallywith a plate.

33 of the rotor. while hub 31 is formed integrally with a plate 34. The plates are so spaced from each other at the center of the rotor that a chamber is provided for a purose' which. will be presently explained. l lachplate 33 or 34 at its periphery is formed with a lateral annular Ii 35 adapted to be' seated within a correspondingly of the housings and 11, the portions 36 being located within'thc chamber 18 of the cooling system. v-

It will also be noted that the portion of the sections 10 and 11 of the housing is cut away as shown at 37 complementary to the outer curved wall of the bosses 31 and 32 so that the bosses will be neatly received by such sections 10 and 11 of the housing. The.

ribs of the plates 33 and 34 are provided with scmi-cylindrical and arcnately shaped passages 38 in which are fitted at spaced intervals arcuately shaped cylinders 39. The bottom of the passage 38 is formed by inward extensions 40 and 41; from the respective plates 33 and 34 the meeting edges of such extensions having a tongue and groove formation as shown at 42 to seal the bottom of the passage. Theupper portion 'of the groove is likewise formed by intu'rned arcuately shaped extensions 43 and 44 provided with annular ribs 45 having a tongue and groove formation as shown at 46 for sealing the plates 33 and 34 adjacent their peripheries.

The ribs are received within a groove 47 in the sections of a split ring 47 which is'riveted or bolted together as shown. T he split ring 47 is received within annular cooperating grooves 48 formed in the portions 36 of the sections 10 and 11 of thehousing and-extend entirely around the housing and revolve in said tracl or groove 48. The portions of the ring 47 la tween the cylindfr is provided with a slot 148. An annular track 10 formed in the housing or cooperating sections 10 and 11 of said l1ous-,

ing is located outwardly from groove 48 and is for a purpose to be presently described.

\Vh'en therotor is revolved the ribs 35 and the ring 47 will ride in their respective grooves in which they are incorporated in the sections of the housing.

Each of the

cylinders

39, 39, 39 and 39 is provided with a head 49 in which is included a water jacket 50 having an opening Y .51 adapted to register with a port as shown at-52 in Figure 3. This port is connected with a substantially radial passage 53 formed in the plate 33 of the rotor and which connects with a passage 54 shown in dotted lines in Figures 2 and 3 located within the hub. 32. This passage is alined with an elongated arcuately' shaped slot 54 formed in the ring 26 as shown in Figure -8. It will be noted that four of these slots are provided which connect with the four substantially radial passages in the plate 33 which lead to the four cylinder heads of the rotor.

The ports 56 at the end of passages 57 in the plate 34 of the. rotor and shownin dotted lines in Figure 1 is adapted .to provide a discharge for the water which passes through the heads and surrounds the engine cyl- 1n :l ers, prov ding a water jacket as shown at 56. It will be noted that the cylinder at this point. is provided with an annular passages 57 which are four in number, ex

tend towards the center of the plate adjacent the shaft 22 and through passages in the rings 21 connect with chamber 20 in

rings

21 and 21. Passages 28and 28 connect the chan-iber 20 with the annular cooling chamher 16. The warm water is discharged' through pipe 24. The construction of the

rings

21 and 21 and the passages 57 and the ports 56 in the ring 21% is similar in all respects to the ring and port construction at the opposite side'of the stator of the engine.

Mounted for reciprocation in each cylinder is a piston 61having a head 62 in which is mounted a port and valve seat 63 for a reciprocating valve 64. The valve 64 is carried by a stem 65 mounted in a guide 66, which is carried by a spider 67 formed integrally with the piston 61. The piston 61 is provided. with the usual piston rings and is arcuately shaped to conform to the curvature of the engine cylinder. The piston is provided with a'hollow connecting rod 68 which is securedto the spider 67 and has its oufer end rigidly connected to one end 70 of an oscillating bar 71. A spring 72 embracing the stem 65 is secured to saidster'n at one end and has its other end in engagement with the bearing66 in order to maintain the valve 64 on its seat 63 in the head 62 except when the valve is forced upwardly by means of a dog 7 3'pivotally' mounted at 74 in the bifurcated end of the oscillating bar 71 which carries a roller 75 adapted to engage a cam portion 7 6 carried by the section of the housing of the stator.

The oscillating bar 71 is loosely mounted onthe shaft 72 as is a bar 77. The arm 70 of the oscillating bar 71 is provided with a pair of rock levers 78 pivoted on pins 79 formed on opposite-sides of the bar. The arm 70 of the oscillating bar is likewise provided with a pair of rock levers 80 piv oted on pins 81 formed on opposite sides of said arm. vRccesses 7 9 are provided in said levers to receive the pins. A pair of slots 82 and 83 disposed at rig it angles to each other and formed in each of the rotor plates 33 and 34 are adapted to receive rollers 84 carried bvthe ends of the said rock levers.

These rollers are mounted on pins 85 and 86 carried by rock .levers 78. A pair of rollers 87 mounted on the outer ends of the pins lOaand 11 of the housing of the engine The arms :90- and 91 of the oscillating bar '77 of the lever'92 and adapted to be received within elongated slots or guides 97 formed 'in-the side plates 33 and 34 of the rotor.

lhe one-end of the levers 92 are also provided with a pair of rollers 98 mounted for rotation on a pin 96 and received within the camgroove .88. The rock levers 93 haverollers 99 riding in their respective slots 100. These slots are disposed at right; angles to the slots 97 and are likewise formed in the plates 33 and 34. The pins 101 on whicha pair of the rollers 99 are mounted are sutli ciently extended and provided with rollers 102 which are received within the continuous cam slot 88 formed in the'sections of the housing. The leverSOis provided with sim ilarly-positioned rollers 103 and 104 for riding"in the respective slots 105 with the larger rollers 104 riding in the groove 88.

The interior of the rotor is supplied with a definite quantity of lubricating oil which is splashed by the revolution of the rotor andwhiclr finds i .s way inall the movable parts of the engine and which maintains the same properly lubricated. The oil is forced into the central chamber by a pump (not shown) and; is returned to a chamber 105 through a passage 105.

In order to limit the quantity of lubrieating oil carried by the

cylinders

39, 39, 39 and 39 I provide a shield for each cylinder and in which a shield 110 is connected as shown at 111 to the arm 70 or. 70 of the oscillating bar 71 and rides in an arcuatelyshaped track as shown at 112. As the arm -70 oscillates back and forth said shield is reciprocated and is adapted to substantially maintainfthe space between the cylinders 39 and '39 closed. The cylinders '39 and 39 are each provided with. a shield 113 which rides; in'a groove 114 which has a I shorter radius than groove 112.. One ofv these shields is likewise pivotally mounted as at 111 to either arm 90 or 91 of the oscillating bar 77. Theshields 113 are reciprocated in close contactwith 1 either of the shields 110 during rocking of the respective arms. It will be noted .that the side edges 'of the respective shields are each mounted in grooves 203 as has been described,-the grooves being formed in both of the rotor .plaes 33 and 34. theshields being curved'to conform to the curvature of the members and 41 of the respective plates and 34 5 as shown in Figure 2.

Thecylinders are supplied with a comb1:sfib1'e 'mixture through an opening 115 formed in the section 11 of the housing adja cent the lowerqend of the rotor. This opening orpdrt is adapted to be connected to a conduit that is extended tothe usual carbureter and upon the intake stroke of a piston 61 the gases are drawn into the hollow connecting 1'od 68 past the spider 67 through the port 63 and into the combustion chamber (51 of each of thecylinders when they pass said opening. A passage 116 in eachend of an arm of the bars 71 and 77 which is in communication with the hollow connecting rod 68 is adapted to alind with the port 115 in the housing. The passage 116 is formed in a lateral extension 117 pl'O)Jl(ld upon the outer end of both of the arms and 70 of the oscillating bar71. A diametrically disposed extension 118 is located opposite the extension 117 and theseextensions are adapted to ride in grooves formed in the ribs 35 of the plates and 34, the extension 117 riding in the groove 119 in the plate 33 while the extension 118 rides in a groove 121 in plate 34. The outer end of said arms,-as shown cat'120, is adapted to ride in the groove 1O located between the sections of the housings 10 and 11 and at tho'epoints between the sections of: the rings 47 where said rings are cut away to form slots 47 betweenadjacent cylinders. The groove 119 in the plate 33 is deeper than thegroove 121 in the plate 34: and extends substantially through the rib 35 at this point while the groove 121 is located entirely within the rib 35 of the plate 34.

An elongated slot 122' is formed in the section 11 of the housing and decreases in depth from an end 123 to the end of the'aro J which is shown at 124, with an opening 125 intermediate the end of the slot 122 which is adapted to be connected in anyapproved manner with an exhaust pipe.

An o'peni ng'127 in the plate 34; alines with the opening 127 through which the exhaust gases pass and when the opening in the late alines with the opening 125 in the section 10 of the housing the gases are exhamted throughout the length of the arm ately shaped grooves 122. i As shown more particularly in Figure 6 .he oscillating bar/71 is enlarged at its central portion, asshown at- 128 having an elongated opening as shown at 129 to receive the hub 129 of the oscillating bar 77. It will be seeri that the bar 77 oscillates within theslot 129 of the oscillating bar 71.

The contact 130:is removablyrmounted in a.pa=.sage formed in the 'seetion 10 of the housing and'is' connectedto a .wire 131 from the usual ignition system of an engine. This contact, as is shown in Figure 5, 'is

insulated from the housing. The contact is V through the split ring 46, the arcuately shaped member 44 of the plate 34 and through a wall of an engine cylinder 39.

The electrodewhich passes through the olution of the rotor which is included within the' plates 33 and 34. The engine cylinders are carried around through a circular track by said rotor plates and the oscillating bars 71 and. 77 are eriodically rotated through predeterminedarcs as the pistons 61 are moved or reciprocated in their respective engine cylinders. I

As a cylinder 39" reaches the position shown in Figure 1 the roller 75 carried by the arm 70 of the oscillating bar 71 engages the cam member 7 6 thereby rocking the lever 73 which act; upon the stem of the valve 64 against the tension of the spring 72 and moves said valve inwardly and away from its seat 63 so that the hollow connecting rod 68 places the passage 116 in the arm 70 in communication with the combustion chamber 61 and since at this time the arm '70. is

' withdraws the piston 61 from the cylinder held stationary by the position of the rock levers 80 the cylinder 39 will be carried forwardly by the rotor plates 33 and 34 and thus creating the suction stroke and causing a combustible mixture to be drawn into the combustion chamber 61 The cylinder 39 containing a charge of combustible mixture is moving along the compression stroke when the piston within said cylinder is being forced inwardly by the rock levers 93 and compressing the combustible mixture which reaches the maximum compression at a point in the travel as shown by the positionof the cylinder 39. At

7 this point the respective spark plugs ofthe various cylinders engage the contact 130 and ignite the compressed fuel. At the ex-.

plosion the react-ion of the expanding gases tends to force the piston 61 in cylinder 39 upon a backward stroke but as shown in Figure 1 .the rock levers 78 are maintained substantially stationary through the posi-,

tion of the various rollers at its'opposite ends in their respective slots thereby holding the arm 70 stationary. =Sincethepiston 61 cannot be reversed in its movement the rotor lates and likewise the cylinder 39' are move fforwardlyuntil -the cylinder has moved to its outward limitof stroke whence the cylinder and piston and arm' will si-i multaneously bemoved forwardly in their paths. The cylinder 39 is shown as having reached the exhaust position and is now disclosed as having partially com leted such a stroke. All of the cylinders egin to exhaust at the point designated by thelnumeral 123 in Figure 3 and terminateisuch again reach the position shown by cylinder t 39" in Figure 1 the suction stroke is had as has beenexplained. The combustible mix-' ture. as will be noted, enters the hollow connecting rod 68 from passage 116 in the arm 70 and which passage extends, as shown in Figure 6. through the lateral extension, 117 which rides within the groove 119 formed at intervals in the ribs 35 of the rotor 33. The section 11 of the housing also has an opening or port 115 alining with the passage 116. The exhaust passes out from the cylinders throughthe passages 127 formed in'the cylinders and through the passages 12? formed in the rib 35 of the plate 34 whence it enters the slot 122.

The various strokes of each of the pistons of the engine are controlled by the two rocker bars 71 and 77 and the various rock levers and their rollers which are carried by said rock levers and these oscillating bars and rock levers are in turn controlled by the gnovements of the various rollers in the straight grooves in the rotor plates and the cam grooves in the sections of the housing. The small rollers 84 move in the respective straight slots 82 and 83 and therefore control the rocking movement of the levers 78. The speed at which thelevers are rocked is controlled by the movement of the large rollers 87 in the cam grooves 88 and the cam grooves and the straight grooves are so coordinated that they will tendto lock' the oscillating arms against movement at different points in the rotation of the rotor plates 33 and 34 while permitting the rotor plates 33 and 34 to continue in their revolution. the speed of the revolution being i constant. This effect is shown more clearly in Figure 1 and in which the rock levers 78 maintain the oscillating bars,71 against movement through the respective rollers car-. ried at its opposite ends. The rollers 84 in the straight slots 82 are substantially at the upper limit of the upper ends of said slots while rollers 84 are at the inner ends of the slot 83, with the large rollers 87 ata point in the cam tracks 88 where the cam-track decidedly changes its direction to form a bend in the track. The rollers 87 beingengaged by the point at this bend aid in locking the rock levers 78 against movement. The rock levers '80 are similarly held against movement to cause the suction stroke in cylinder 39". Rock levers 92 and 93 aremoving in their cooperative paths as directed by their rollers and compound tracks so that cylinder"39 is exhausting while cylinder 39 is compressing. V

Bushings 150 are received within the passages 151 in the sections 10 and 11 of said housing and havetheir inner walls spaced from the respective hubs 3i and 32 of the rotor plates 33 and 34.

The outer edges of the bushing abut the respective rings 26 and 21 WVhat'I claim is:

1. In a rotary internal combustion engine, a housing, a shaft, a pair of spaced cooperating rotor plates keyed to the shaft, said plates adjacent their peripheries being provided with circular grooves, cylinders mounted in a fixed spaced-relation in the grooves and adapted to-move with the 'rotor plates, pistons mounted 1n each cylinder,

25 oscillatingbars loosely mountedonthe shaft,

and means carried by the oscillating bars for controlling movement of the oscillating.

bars, said pistons being connected to the ends of said bars. a a.

2. In a rotary internal combustion engine,-

a housing, a shaft,a pair of spaced cooperating rotor plates keyed to the shaft,2said plates adjacent their peripheries being provided with circular: grooves, cylmders 35 mountedin a fixed spaced relation in the groovesand adapted to, move with the rotor plates, pistons mounted in each cylinder,

oscillating bars loosely mounted on'the shaft,

means on the oscillating bars and means in r the plates and housing and cooperating with the means onthe bars for causing oscillation of the bars and pistons independently of the rotary movement of the rotor plates.

3.- Ina rotary internal combustion engine,

oscillating bars loosely mounted on the, shaft, rock levers pivoted :on theoscillat1ng' bars, and means in the plates and housing cooperating to cause oscillation ,of the bars and pistons.

" 'oscillating bars loosely mounted on the shaft,

--vided with mounted in a fixed spaced relation in the plates, pistons mounted in each cylinder,

of said pistons.

-a housing, a shaft, apair of spaced cooper-' n a rotary internal combustion engine,

ating rotor plates keyed to the shaft, said rock levers pivoted on the oscillating bars, and means in the plates and housing cooper-* ating to cause oscillation of the bars and pistons, and means included in the last mentioned means for causing the pistons and bars-to remain stationary during certain periods of each revolution of the rotor plates. j 5. In a rotary internal combustion engine, a housing, a shaft, a pair of spaced cooperating rotor plates keyed to the shaft, said plates adjacent their peripheries-being procircular grooves, cylindersv grooves and adapted to move with the iotor so oscillating bars loosely mounted on the shaft, rock levers on the oscillating bars and provided with rollers, said plates being provided with slots adapted toreceive certain of the rollers, and means on the housing adapted to engage the other rollers, and cooperating with the slots and rollers for caus ing oscillation of said-bars and reciprocation K 6. In a rotary internal combustion engine, a housing; a shaft, a pair of spaced cooperating rotor plates keyed to the shaft, said plates adjacent their peripheries being pro- .vided with circular grooves, cylinders mounted in a fixed spaced relation in the grooves, and adapted to move with the rotor plates, pistons mounted in each-cylinder,

oscillating bars loosely mounted on the shaft, rock levers on the oscillating bars and provided with rollers, said plates being proioo vided with slots adaptedlto receive certain of therollers, means on the housing adapted to ngage the other rollers, and cooperating wit the slots and rollers forcausing-osciL. lation of'said bars and reciprocation of said pistons, and means included in the'last mentioned means fol-causing the pistons and bats to remain stationary during certain periods of each revolution of the rotor plates.

7. In a rotary internal combustion engine, no

'a housing, a shaft, a pair of spaced cooperating rotor plates keyed to the shaft,,said plates adjacent their peripheries being provided with circular grooves, cylinders mounted infla fixed spaced relation in the H5 grooves and adapted toi move with the rotor plates, pistons mounted in each cylinder, oscillating bars loosely mounted on the shaft,

rock levers on the oscillating bars and provided with rollers, said plates being provided-with slots adapted to receive certain of the rollers, said housing being provided with cam grooves adapted to receive theother rollers,and cooperating with the slots and rollers for'causing o'sfillation of said 1 bars and reciprbcation of the pistons.

8. In a rotary internal combustion engine, a housing, a shaft 21 pair of spaced coo' crating rotor plates keyed to the shaft,

sai plates adjacent their peripheries being provided with circular grooves, cylinders mounted in a fixed spaced relation in the groovesand adapted to move with the rotor platesypistons mounted in each cylinder,

oscillatingv bars loosely mounted on the shaft, rock levers on the oscillating bars and provided with rollers, said plates being provided with slots adapted to receive certain of the rollers,'said housing being provided with cam grooves adapted to receive the other rollers and cooperating with the slots and rollers for causing o:?ciilation-of-said bars and reciprocation'of the pistons, said cam grooves having oll'set portions adapted to retain the oscillating liars and pistons at rest for periods during each revolution of said plates.

9. In a rotar internal combustion engine, a housing, a s aft, a. pair of spaced cooperating rotorplates keyed to the shaft, said plates adjacent their peripheries being provided with circular grooves cylinders mounted in a fixed spaced relation in the grooves and adapted to move with the rotor plates, pistons mounted in each cylinder, oscillating bars loosely mounted on the shaft, rock levers on the oscillating bars and provided with rollers, said plates being provided with slots adapted to receive certain of the rollers, said housing being provided with cam grooves adapted to receive the other rollers and cooperating with the slots and rollers for causing oscillation of said bars and reciprocation of the pistons, said cam grooves having ofi'set portions. adapted to retain the oscillating bars and pistons at rest for periods during each revolution of saidplates, one of the bars being oscillated while the other oar remains -stationary, said pistons being carried around with the plates in a continuous re olution.

10. In a rotary internal combustion engine, a housing, a shaft, a pair of spaced cooperating rotorplates keyed to the shaft, salt provided with circular grooves, cylinders mounted in a fixed spaced relation in the grooves and adapted to move with the rotor plates, pistons mounted in each cylinder, oscillating bars loosely mounted on the shaft, rock levers on the oscillatin bars and provided with rollers, said plates being pro- ,vided with slots adapted to receive certain I of-the rollers, said housing being provided with cam grooves adapted :to receivethe other rollers and cooperating with the slots and rollers for causing oscillation of said bars and reciprocation of the pistons, said cam grooves having offset portions adapted to retain the oscillating bars and pistons at rest'during the intake and expansion strokes.

11. In a rotary internal combustion engine, a housing, a shaft, a pair of spaced cooperating rotor plates keyed to the shaft, said plates adjacent their peripheries being plates adjacent their peripheries being provided with circular grooves, cylinders mounted 11141 fixed spaced" relation in the groovesand adapted to move with the rotor plates, pistons mounted in each cylinder, oscillating bars loosely mounted on the shaft, rock levers on the oscillating bars and provided with rollers, said plates being pro cooperatingrotor-plates keyed to the shaft,

said plates adjacent their peripheries being provided with circular grooves, cylinders mounted in a fixed spaced relation in the grooves and adapted to move with the rotor plates, pistons mounted in each cylinder, oscillatin bars loosely mounted on the shaft, and means carried by the oscillating bars for controlling movement'of the oscillating bars, a hollow rod connecting a piston with an end of an oscillating bar, the

ends of eachbar having a passageopening i into the hollow rod, a passage in one of the lates adjacent each cylinder adapted to register at times with the passage in an arm and an intake passage in the housing adapt ed to register with the openings in the plate.

13. In a rotary internal combustion engine, a housing, a shaft, a pair of spaced cooperating rotor plates keyedto the shaft, said plates adjacenttheir-peripheries being provided with circular grooves, cylinders mounted in a fixed spaced relation in the grooves and adapted to move with the rotor plates, pistons mounted in each cylinder, oscillating bars loosely mounted on the loo shaft, and means carried by the oscillating bars ;for controlling movement of the oscillating bars, said pistons being connected to the ends of said bars, each cylinder, having an" exhaust port, one of the plates having a plurality of exhaust ports, a port in theplate alining with a port in said cylinder, the housmg'having an exhaust port adapted .to be alined with the exlaaust ports in the cylinders and plate.

14. In a rotary internal combustion engine, a housing, a shaft,,a pair ofspaced cooperating rotor, plates keyed to the shaft, said plates adjacent their peripheriesxbeing pro vided with circular, grooves, cylinders mounted in a fixed spaced relation in the grooves and adapted to move with the rotor plates,

pistons mounted in each cylinder, "oscillating bars loosely mounted on theshatf,

$1) ribs. r

ribs, the rotor plates and means carried by the oscillating bars for controlling movement of the oscillating bars, said pistons being connected to the ends of said bars each cylinder having an exhaust port, one of the plates having a plurality of enhaust ports, a ort in the plate alining with it port in said cylinder, the housing having an exhaust port adapted to he alined with the exhaust ports in the'cylinders and 1 plate, the housing being provided with a groove decrea'singin depth from end to end,

the exhaust port in the housing being located midway between the ends of said groove.

15, In a rotary internal combustion en- 13 gine, a housing, a shaft, a pair of spaced cooperating rotor plates'lieyed to the shaft, said platesadjacent their peripheries being provided with circular grooves, cylinders mounted in a fixed spaced relation in the grooves and ada'pted to move with the rotor plates, pistons mounted in ea'chcylinder, os-

cillating bars loosely mounted on the shaft,

and means carriedby the oscillating bars foricontrolling movement of the oscillating bars, said pistons being connected to the ends of said bars, the o posite sides of the bars adjacent each end heing provided with lateral ribs, the rotor plates being provided with arcuately shaped grooves to receive the 16.In a rotary internal combustion engine,-a housing, a shaft, a pair of spaced cooperating. rotor pla'tes keyed to the shaft, said platesadjacent theirperipheries being 33 provided with circular grooves, cylinders mounted in a fixed spaced relation in the grooves and adapted to move with the rotor ,plates, pistons mounted in each cylinder, os-

- cillating bars loosely mounted on the shaft, and means carried by the oscillating bars tor controlling movement of the oscillating bars,

said pistons being connected to the ends of. said bars, the opposite sides of the bars ad"- j acent each end being rovided with lateral eing provided with a'rcuately shaped grooves to receive the ribs, said plates being provided with annular ribs adjacent the grooves in the plates, said housing being provided with grooves adapted to receive the ribs onthe plates.

' 17'. In a rotary internal combustion engine, a housing, a shaft, a pair of spaced cooperating rotor plates keyed to the shaft,

said plates adjace' their peripheries being provided fwith circular ,grooves, cylinders mounted in'a, fixed spaced relation in the r.

- grooves and adapted to move with the rotor plates, pistons mountedin each cylinder, 0s; cillating bars loosely mounted on the shaft,

- and' means carried by the oscillating bars for controlling movement of the oscillating bars, saidpistons being connected tothe ends at said bars, an 'arcuately shaped shield con-' nected to each end of the oscillating barand .oscilla table in close association with .each

cylinder foriclosing the space between each pair of the cylinders.

18. In a rotary, internal combustion engine, a housing, ashaft, a pair of spaced to operating rotor plates keyed to theshal't; sa'id plates adjacent their peripheries being provided with circular grooves, cylinders mounted'in afixed spaced relation in the grooves and adapted to move with the rotor plates, pistons mounted in each cylinder, os cillating bars loosely mounted on the shall, and means carried by the oscillating bars for controlling movement of the oscillat ng bars, said pistons being connected to the ends of said bars, an arcuately shaped shic'd connected to each end of the oscillating liar and oscillatable in close association with each cylinder for closing the space between each pair of the cylinders, said plates being pro vided with grooves, to receive the edges of the shields.

19. In a rotary internal combustion engine, a housingfa shaft, a pairof spaced cooperatingrotor plates keyed to the shaft, said plates adjacent their peripheries being provided with circular grooves, cylinders mounted in a fixed spaced relation in the grooves and adapted to move with the rotor plates, piston s nounted in each cylinder, os-

' cillating ba'rs loosely mounted on the shaft,

and means carried by the oscillating bars for controlling movement of the oscillating bars. a hollow rod connecting a piston with an end of an oscillating bar, the ends of each bar having a passage opening into the hollow rod, a passage in one of the plates adjacent each cylinder adapted .to register at times with the passage in an arm and an intake passage in, the housing'adapted to register with the openings in the plate, the piston being-provided with an intake port, a valve forclosing said port, and carried by a stem,

means for operating-the stem to. open posi-' tion for thevalve at a predetermined'point 1n the revolution of the rotor plates;

'20. In a rotary internal combustion engine, a housing, a shaft, a pairof spaced cooperating rotor plateskeyed to the shaft, said plates adjacent theirp'eripheries being R provided with circular grooves, cylinders moi1nted in a fixed spaced: relation in the grooves and; adapted to movewith. the rotor piston being provided with an intake port,

Ill)

.- eries a valve for closing said port'and carried by a stem, a bell crank lever pivoted in each end of the oscillating bars and having and arm normally in engagement withthe valve stem, the housing having an annular track adapted -to receive the other arm of the bell crank lever. and a cam in the track adapted to engageand rock the bell crank lever to open the valve during the intake stroke.

21. In a rotary internal combustion engine, a housing, a shaft, a pair of spaced cooperating rotor plates keyed to the shaft, said plates adjacent-their peripheries being provided with circular grooves, cylinders mounted in afixed spaced relation in the grooves and adapted to more with the rotor plates, pistons mounted in each cylinder, osclllating bars loosely mounted on the shaft, and means carried by the oscillating bars for controlling movement of the oscillating bars, said pistons being connected to the ends of said bars, said rotor plates at their peripheries being provided with cooperating flanges, a ring havinga groove to receive the flanges,means for clamping the ring to said flanges, said flanges being cut away between each pair of cylinders andthe ring being provided with slots at these points, the free ends of the oscillating bars being movable in-the slots in the ring.

224111 a rotary internal combustion engine, a housing, a shaft, a pair of spaced cooperating rotor plates keyed to the shaft, said plates adjacent their peripheries being provided with circular grooves, cylinders mounted in a fixed spaced relation in the grooves and adapted to move with the rotor plates, pistons mounted in each cylinder oscillating bars loosely mounted on the shaft, and means carried by the oscillating bars for controlling movement of the oscillating bars, said pistons being connected to the ends of saidbars, said rotor plates at their periphbeing provided with cooperating flanges, a ring having a groove to receive the flanges, means for clamping the ring to said flanges, said flanges being cut away between each pair of cylinders and the rin'gbeing provided With slots at these points, the free ends of the oscillating .bars being movable in the slots in the ring, said rings being clamped to the rotor plates and revolved therewith, the oscillating bars having periodic oscillating movement in the direction of the rotation of said plates, a bell crank lever pivotally mounted in each end of the oscillating bar, an annular-groove provided.

in the housing. the outer end of each bell prank lever being pi' -n'i(led-witli a roller riding in the groove, a cam in the roove in the housing adapted to be engaged by the roller for oscillating the bell crank lever, and

.an intake valve carried by a piston adapted to be operated by the oscillating bell crank lever.

23.'In a ,rotary internal combustion engine, a housing, a shaft, a pair of spaced cooperating rotor plates keyed to the shaft, said plates adjacent their peripheries being provided with circular grooves, cylinders mounted in a fixed spaced relation in the grooves and adapted to move with the rotor plates, pistons mounted in each cylinder, oscillatingbars loosely mounted on the shaft, and means carried by the oscillating bars for controlling movement of the oscillating bars, said pistons being connected to the ends of said bars, one of the oscillating bars being provided with a slot through which is inserted the other bar, with said Ian-shaving relative movements with respect to each other.

24. In a rotary internal combustion engine, a housing, ashaft, a pair of spaced cooperating rotor plates keyed to the shaft, the housing being provided with annular grooves, each ,plate adjacent its periphery being provided with a rib movable in the groove, cylinders mounted in theplates, oscillating b'ars loosely mounted on the shaft, a piston in each cylinder with the pistons connected to the ends of oscillating bars, the end of each bar being provided with a lateral passage, an intake port in the housing, the passages in the ends of the oscillating bars being adapted to aline with the intake port in the housing, a conduit connecting each of the cylinders with the passages in the ends of the oscillating bars, and elongated passages in one of the rotor plates alinin with the passage in the end of the bar and adapted to periodically aline with the'intake port in the housin 25. In a rotary internal combustion engine, a housing, a shaft, a pair of spaced cooperating rotor plates keyed to the shaft, the housing being provided with annular grooves, each plate adjacent its periphery being provided with a rib movable in the groove, cylinders mounted in the plates, oscillating bars loosely mounted on the shaft, a piston in each cylinder with the pistons connected to the ends of oscillating bars, the

endof each bar being provided with a lateral passage, an intake port in the housing, the passages in the ends of the oscillating bars bein adapted to aline with the intake port in the housing, a conduit connecting each of the cylinders with the passages in the ends of the oscillatingbars, andelongated passages in one of the rotor plates alining with the passages inthe end of the bar and adapted to periodically aline With' the intake port in'*thehousing, and means for controlling the flow of'the combustible mixture through the conduit connecting the cylinders with a passage in the ends'of the oscillating bars.

26. In a rotary internal combustion ens gine,a housing, a shaft, a pair of spaced 00- len ing being provi operating rotor plates keyed to the shaft, said plates adjacent their peripheries being provided with circular grooves, cylinders mounted in a fixed spaced relation in the grooves and adapted to move with therotor plates, p' on's mounted in each cyhnder, oscillating bars loosely mounted on the shaft, means -on the oscillating bars and means in the plates and housings and cooperating with-t e means on the bars for causing intermittent angular rotation of the bars independentlyof the rotary movement of the rotor plates. f

27. In a rotaryinternal combustion engine, a housing, a shaft, a pair of spaced cooperating rotor plates provided with hubs keyed to the'shaft, cylinders mounted in fixed spaced relation in the grooves and adapted to be spaced for a portion of their length from the rotor plates to form a wa ter jacket, passages provided in the plates and hubs, a ring on the shaft adjacent each hub providin an-annular chamber, the passages in the uh and plates connecting the annular chamber in the rings with the water jacket embracing the cylinders.

28. In a rotary internal combustion en gine, a housing, a.

shaft, a pair of spaced cooperating rotor plates rovided. Wlth hubs keyed to theshaft, cy fixed s aced relation. in adapte gth the grooves and to be spaced for .a portion of their from the rotor plates to form :1. waterjacket, passages rovided in the plates and hubs, a ring on t e shaft adjacent each hub providingl anannular chamber,-the passages in the. ub and plates connecting the annular chamber in the rings with the water jacket 'em'bra i the cylinders, the lions ders. mounted in' ed with annular chambers forming water jackets connected together,"

one of said chambers in the housing being connected with .a ring, a source ofwater supply connected with the other ring.

29. In a rotary internal combustion en-.

gine, a housing, a shaft, a pair of spaced cooperating rotor plates prov1ded with hubs keyed to the shaft, --cyhnders mounted in fix'cd s aced relationin the grooves and adapte to be spaced for a portion of their length from the rotor plates to form a waprovided in the -plates ter jacket, passages and hubs, a ring on the shaft adjacent each hub providing an annular chamber, the passages-in the hub and plates connecting the annular chamber in the rin with the water'jacket; embracin the cylinders, the head of each cylinder chamber forming a water jacket, and passages connecting the water jacket in the head with the water jacket embracing the cylinder.

mg provided with a 30. In a rotary internal combustion engine, a housing, a shaft, a cooperating rotor lates keyed-to the shai fixed spaced relation in the grooves and adapted to be spaced for a portion of their length from the rotor plates to form a water jacket, passages rovided in the plates and hubs, a ring on t le shaft adjacent each pair of spaced provided with hubs hub providing, an annular chamber,. the' in the hub and plates connecting the annular chamber in the ringswith the passages water jacket embracing'the cylinders, the housing-adjacent its periphery vided with a pair of annular chambers t, 'cyhnders mounted in mg PIO' formin water ackets adjacent the peripheries'o the rotorplates where the-cylinders" v are mounted in sa1d plates.

4 JOHN, ammer,