US1177380A

US1177380A - Rotary explosive-engine.

Info

Publication number: US1177380A
Application number: US2437115A
Authority: US
Inventors: Charles R Carpenter
Original assignee: Individual
Current assignee: Individual
Priority date: 1915-04-27
Filing date: 1915-04-27
Publication date: 1916-03-28
Anticipated expiration: 1933-03-28

Description

c. R. CARPENTER.

ROTARY EXPLOSIVE ENGIN E. APPLICATION FILED APR.27. 915.

1 1 77,380. PafentedMar. 28, 1916.

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attorney C. R. CARPENTER.

ROTARY EXPLOSIVE ENGINE. APPLICATION FILED APR.27,1915.

Patented Mar. 28, 1916.

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Patented Mar. 28, 1916.

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C R CARPENTER ROTARY EXPLOSIVE ENGINE.

.APPLICATION FILED APR. 27. 1915.

' to operate the gates.

is to impart to the rotor an impulse through the greatest possible prora rnnr rare.

ROTAB'?! EXIPLOSIVE-ENGINE.

To all whom it may concern:

Be it known that 1, CHARLES R. CARPEN- rnn, citizen of the United States, residing at San Diego, in the county of San Diego and State of'California, have invented certain new and useful Improvements in Rotary Explosive-Engines, of which thefollowing is a specification.

My invention relates to rotary internal explosive engines having twin cylinders firing at intervals, thus producing impulses to a common shaft at diiferent points and having no dead center.

The object in view is to produce laterally moving fluid pressure operated gates utilizing the exhaust gases to operate the. gates in one direction and acommon fluid pressure supply to operatethe'gates in "the other direction.

Another object is to minimize the cost by simplicity of construction and produce increased efficiency by utilizing the expansive power in the exhaust that is ordinarily lost,

" A further ob ect portion of its rotation, by the prompt movement of the gates, said movement being produced by energy ordinarily lost and by use of said power for movement to the gates, the rotor is relieved of said duty and increased efficiency is attained.

These and other objects in view will appear in the description and be particularly pointed out in the claims.

Referring to the drawings, Figure 1 is a plan view of my improved engine showing the fluid pressure tank in elevation and the fuel generator in section. Fig. 2 is a vertical longitudinal section of the engine. taken on the line of the main or power shaft. Fig. 3 is a vertical transverse section taken centrally through one of the rotor casings, showing the rotor and the gate in section with the near porti n of the cas ng removed, showing the attaching flange of the adjoining portion in elevation. Fig. 4 is a vertical transverse section showing one of the rotor casings in elevation and its exhaust chamber in section showing its communication with the gate cas ng. and also showing the fuel inlet ports. Fig; 5 is a similar view to more fully illustrate the slide valve for fuel control with-the gate casing in section. Fig. 6

Specification of Letters Patent.

is a detail view of the slide valve casing, and F g. 7 1s a detail view of the slide valve. Similar numerals indicate corresponding Patented Mar. 28, itfiifi.

Application filed. April 27, 1915. Serial No. 24,371.

parts in all the figures of the drawings, in I which-- 1 is the bed plate, preferably of cast metal and for convenience in construction, said bed plate is formed in three parts each provided with attaching flanges 2 extending up from the face of the bed plate, said flanges being provided with recesses 3 in which rest, when the parts are assembled, the attaching flanges iof the rotor casings 5, said rotor casings being formed in two sections as is the usual practice in devices of this character, each section carrying alining integral housings 6, provided with any preferred 1 form of oiling means such as ,oil cups 7 adapted to supply a lubricant to the shaft 8 mounted for rotary movement in the houslugs.

As will be seen in Fig. 2, the inner casing sections have cast or formed integral therewith directly beneath the housings, a portion of the gate casing, as shown at 9, said portion being provided with attaching flanges 10, to which the central portion 11 of the gate easing which is also provided with at taching flanges is secured.

By' this construction, it will be seen that the parts are conveniently cast and machined and finally assembled with all the parts firmly bolted together and being securely bolted down, as shown at 12, the device will possess the firm and rigid construction otherwise formed only when the casings are cast in one piece, yet possessing all the conveniences incident to a construction where the parts are accessible, convenient for shipment, as well as for prompt replacement.

Mounted rigidly on the shaft within the casings are rotors having the central disk portion 13 mounted on the shaft, the head 14:

projectingfrom the disk portion and adapt- (not shown) if a fluid pressure chamber 17,.which is at all trons of the rotor casings are provided with in cross section and has slidably m ounted' therein for lateral movement, the]; gates, there being sufficient distance between the inner ends of the gate members to provide times in open communication with the fluid pressure tank 18, through pipe 19 (Fig. 1), said pipe 19 being provided at 20 with a pressure indicator adapted to maintain a pressure of approximately twenty pounds in the pressure chamber.

The gates 21 consist of the vertically disposed plate portion 22, adapted to be advanced with the plate portion 22 resting in grooves 23 formed in the casing across the cylindrical portion of the casing, entirely closing same.

The plate 22 is solid for a width equal to the cross section of the bore of the casing and is provided with a port or passage 24 through which the exhaust gases delivered through the exhaust passage 15 may pass and act-upon the entire surface of the disk portion 25 of the gate to force the plate por tion 22 back out of its position across the casing. A disk 26 having, as does the disk 25, a sliding fit within the gate casing, is spaced by post 27 from disk 25 a distance approximate-lythat of the throw of the gate and is adapted to be acted on to give the gate. its forward movement by fluid pres sure in chamber 17, the end walls of said chamber 17 being formedv by the disks 26 and against which a constant pressure is maintained.

Exhaust ports 28 are provided in the gate casing in such a position in relation to the throw of the gates as to provide means of exit for the exhaust gases, when the gate is retracted. said port leading into the exhaust manifold 28 the disk 25 in its movement passing beyond the port 28 to allow the exhaust gases to escape, but when the gate is forward. as shown in theposition to the right of Fig. 2, it will be seen that disk 26.

never advances beyond said 'port 28 and' therefore prevents thecscape of pressure maintained in chamber 17.

To insure proper timing in the operation of the gate under varying conditions of load. spring pressed triggers 29 are provided to automatically engage near plate 22, the

edge of rings 25 in their retracted position,

maintaining them in said position and from which they are released by tripping fingers 30 mounted. on adjustable annular rings 31 secured tothe shaft 8, said annular rings also carrying brushes 32 for closing the circuit and producing the firing spark.

Oil cups 33 are provided for the lubirica- 1 tion of the gates and packing" rings (not shown) may be provided. in the diskinem-l bers25 and 26 ofthe gates to prevent lea-k age if found necessary.

By reference to Figs. 3, 4 and 5, it will through .pipe' 42 and port 43. vA valve-3T having a hollow portion 38, a solid portion 39 and an operating arm 40 extending through slot 41 in the valve casing, is adapted to be adjusted within the valve casing to permit fuel entering the valve casing through port 43 to pass along through the hollow portion 38 of the valve and through more or less of the inlet ports 35 into the explosion chamber.

over more or less of the ports 35', the quantity of fuel admitted-to the casing is controlledt At each revolution of the rotor in the direction indicated by the arrow, whenthe cut-away portion34 of the rotor passes beneath the inlet ports 35 in the casing, the port or ports not covered by the portion 39 of the valve form a direct communication from pipe 42 through port 43, hollow By the adjustment of slide valve 37 to bring portion 39 thereof;

portion 38 of the valve, throughsaid port? or ports and cut-away portion to the explosion chamber.

The lever 40 is secured to a, rotary frame 44 made up of connected bands encircling.

the inner housing 6 of the casing, said frame being ad ustable in a rotary manner on the housing by the lever 45 secured to the outer end. of the arm 46 which extends from the frame 44. v

- Mounted on the rotatably adjustable frame ,44 are contact points in the electric ignition. circuit in such a position as to form a gap in said circuit. but so arranged that the brush 32 carried by the ring 31 will at the proper time in the rotation of the shaft 8, close said gap and complete the circuit to form a spark for ignition at the spark plug shown at 46.

The circuit closure or contact points. as

above noted. are mounted on the adjustable frame 44 and are therefore moved in such a manner as to advance or retard the spark 47 supplies the fluid explosive mixture through pipe 48, said pipe being providedwith a governor 49 to electrically control the supply of fuel.

A shaft 50 mounted on the engine base parallel with'the main shaft, is driven by chain 51, operating over sprocket wheel 52 on the main shaft and sprocket wheel 53 on shaft'50, said shaft 50 being utilized as a common power shaft for the water pump 5% to circulate through piping a 'cooling medium for the rotor casings, said shaft also operating the magneto 56 and an air compressor 57, the latterthrough pipe 58 lead ing to tank 18 maintaining the desired pres sure therein. Any Other preferredmeans may be employed to transfer power to shaft 50.

The operatio which appears to be obvious is in part as f llows: The fuel is admitted through one or'more of the ports to the explosion chamber 59, said chamber being formed between the rotor head 1,4: and the portion 22 of the gate, which at that time rests across the casing entirely closing all communication with the chamber beyond said gate and producing a stationary backing against which the expansion in the fuel due to the explosion may take effect in forcing the rotor head around the casing. The gate "remains in the position above referred to until the edge of the rotor head passes the exhaust port 16.: By this construction, the

gases are expanded until their pressure is only sufficient to operate the abutment,-thereby utilizing their energy to the fullest extent possible. When port 16- is uncovered by the rotor head, the exhaust gases will at the head le-passes, when the pressure maintained at all times inchamber 17 will in contact with disk 26. force the gate, back into its initial position.

A single port mav be used in place of ports the slide valve 37 covering more or less of said port when adjusted. also other minor changes mav be resorted to without departing from the spirit of the invention.

The exhaust of chamber 5 takes place At the extreme while the gases are still under sufficient pressure to operate the gate against the fluid pressure in chamber 1-7, and upon its release through port-28, the outward rush or inertia of said gases, backed up by the forward movement of therotor head from the point at which exhaust port 16 is uncovered, to the point at which it passes the abutment, not only relieves the pressure in the casing but rarefies the pressure in the casingto such an extent that sufficient pressure is not established within the casing in advance of the rotor head on its next rotation, to overcome the fluid pressure in chamber 17 and move the abutment from. its forward position.

lVith the proper timing of trip 29 to release disk 25 and cover exhaust port 28 i1nmediately after exhaust gases are allowed to escape, a partial vacuum wili be set up in the casing in advance of the head 14, and while this partial vacuum may be slowly dispeiled inthe event the'engineceases to rotate, it will be maintained a sufiicient length of time when the engine is running.

lVhatI claim as new and desire to secure by Letters Patent is 1. Ina rotary motor, the combination of twin annular chambers, rotors movable in said chambers and connected to a concentric rotating shaft, gates movable to and from said chambers and connected to a concentricrotating shaft, gates movable to and from a position across the chambers, a series of inlet ports for fuel gas covered and uncovered by the rotors, valves controlling admission of gas to the inlet ports, fluid pressure means for forcing the gates in one direction and means whereby the exhaust gases force the gates'in the other direction.

.3. In a rotary motor, the combination of twin annular chambers, rotors movablein 1 said chambers and connected to a concentric rotating shaft, gates movable to and from a position across the chambers, a series. of inlet ports for fuel gas covered and uncovered by the rotors, valvescontrolling admission of gas to the inlet ports, means to admit fluid pressure between the gates to force them across the chambers and means whereby the exhaust gases retract thegates.

4:. In a rotary motor, the combination of twin annular chambers, rotors movablein said chambers and connected to a concentric rotating shaft, gates movable to and from a position across the chambers, a series ofinlet ports for fuel gas covered and uncovered by the rotors, valves-controlling admission of gas to the inlet ports, means to admit fluid pressure between the gates to force said gates across the chambers alternately and means whereby the exhaust gases of each chamber retract the gate operating therein.

5. Ina rotary motor, the combination of twin annular chambers, rotors movable in said chambers and connected to a concentric rotary shaft, gates movable to and from po sition across said annular chambers, ex-- twin annular chambers,rrotors movable in said chambers and connected to a concern tric rotary shaft, gates movable to and from position across said annular chambers, eX-- plosion chambers adjacent said gates, a

4 series of fuel inlet ports, slide valves adapt ed to close'more or less of the ports, and

' means for opening and closing communication between the ,ports and the explosion chambers. i

7 Ina rotary motor, the combination of twin annular chambers, rotors movable in said chambers and connected to a concentric rotary shaft, gates movable to and from position across said annular chambers,

explosion chambers-adjacent said gates, a

series ofjfuel inlet ports, slide valves adapted to close more or less of the ports, and

means carried by the rotors within the annular' chambers opening-and closing. com

munication between the ports and the explosion chambers. I v

3 8. In a rotary motor, the combination of twin annular chambers, rotors having cen" tral disk portions and head portions movable in the chambers and connected to a concentric rotary shaft, gates vmovable to and from position across the annular chambers, explosion chambers between said head por tion of the rotors and the gates when across the annular chambers, fuel inlet ports communicating with the explosion chambers, the inlet ports being closed by the disk portions of the rotors during part of their rotation.

9. In a rotary'motor, the combination of twin annular chambers. rotors having central disk portions and .head portions movable in the chambers and connected to a concentric rotary shaft, gates slidable in opposite directions within a casin between the annular chambers, fluid pressure admitted to the casing between the gates-to advance the gates acrossthe annular chambers and retracting the gates.

14. In a rotary motor, the combination of 1 form explosion chambers between said gates and said head portion of the rotors, andv centric rotary shaft, gates slidable laterally within a casing between the annular chambers beneath the rotary shaft, means be-.

tween the gates to advance them alternately in opposite directions across the. annular chambers, explosion chambers formed inthe annular chambers between the head portions of the rotors and the gates, fuel inlet ports communicating with the explosion chambers, and means within'the annular chambers to open the inlet ports during part of the rotation of the rotors. I

11. In a rotary motor, the combination of 'twin annular chambers, rotors movable in.

said chambers and connected to a concentric rotary shaft, gates slidably mounted in a casing between the annular chambers for alternate opposite movement across the chambers, a common means .for advancing the gates in opposite directions, explosion chambers formed in the annular chambers between the rotors and the gates, fuel inlet.

ports communicating with the explosion by pressure in excess I of the. advancing means.

12. In a rotary motor, the combination of twin annular chambers, rotors movable in,

said chambers and connected to a concen: tric rotary shaft, gates slidably mounted in a casing between the annular chambers for alternate opposite movement across the twin annular c ambers, rotors movable in said chambers and connected to a concentric rotary shaft, gates slidably mounted in I chambers, and means for retracting the gates I ioo chambers, a common means for advancing the gates n opposite directions, explosion.

casing between the annular chambers for alternate opposite movement across the chambers, a common means for advancingthe gates in opposite directions, explosion chambers formed in the annular chambers between the rotors and the gates, fuel inlet popts pommunicating with -the explosion chambers, and exhaust passages connecting the exhaust ports and the gate casing for casing between the annular chambers for alternate opposlte movement across the chambers, a common meansfor. advancing the gates in opposite directions, explosion 5 chambers formed in theiannular chambers between the rotors and the gates, fuel inlet ports communicating with the explosion chambers, exhaust ports in the annular casings, and exhaust passages connecting the exhaust ports and the gate casings to admit the exhaust gases into the casing and retract the gates/ In testimony whereof I afiix my signature.

CHARLES R. CARPENTER.