US1178131A - Internal-combustion rotary motor. - Google Patents

Description

IIIIIIIIIIII I qi l C. CASTRO.

INTERNAL COMBUSTION ROTARY MOTOR. APPLICATION FILED MAR. 22. 1913.

l 1 l 3 l Patent-ed Apr. 4, 1916.

2 SHEETS-SHEET I.

O o o o I) O Q \J mueutoz w-ilt'megoeo MW C; CA-STRO.

INTERNAL COMBUSTION ROTARY MOTOR.

APPLICATION FILED MAR. 22. I913.

Patented Apr. 4, 1916.

2 SHEETS-SHEET 2.

II/IM Z I/II/I/IM %///////////y// use CESAR cnsrno, or new YORK, n. Y.

INTERNAL-COMBUSTION ROTARY MOTOR.

Specification of Letters Patent.

Patented Apr. 4t, 1916.

Application filed March 22, 1913. Serial No. 756,268.

To all whom it may concern Be it known that I, CESAR CAs'rRo, a citizen of Ecuador, residing at New York, New York county, and State of New York, have invented and discovered certain new and useful Improvements in Internal-Combustion Rotary 'Motors, of which the following is a specification.

My said invention consists in an improved construction of rotary explosive engines, or motors, wherein a series of explosions in a series of cylinders on a common shaft are arranged to follow each other in rapid succession during the rotation of the motor and serve to maintain the speed and power of the motor as may be desired, and it consists further in various improvements in the construction and arrangement of parts, whereby an efficient motor of this character is provided, all as will be more fully hereinafter described and claimed.

Referring to the accompanying drawings, which are made a part hereof and on which similar reference characters indicate similar parts, Figure 1 is a view, partly in front elevation and partly in section, showing a l-cylinder motor constructed in accordance with mysaid invention, Fig. 2 a view, partly in endelevation and partly in cross section, showing the interior construction, Fig. 3 a detail view on an enlarged scale showing the parts adjacent to an explosion chamber on an enlarged scale, and Fig. 4 a detail view of one of the sliding cut-ofls.

In said drawings the portions marked A represent the external stationary casing; B the internal rotary structure; and C the radial pistons.

The external casing A is a heavy casing, of suitable strength for the purpose, formed with hollow peripheral walls constituting a water jacket surrounding the various cylinders. A circulation of'water is provided for by means of suitable water inlets, such as shown at 10, and suitable water outlets, such as shown at 11. Said casing is of appropriate diameter and of the length to provide for the number of cylinders required for an engine of the power desired. In Fig. 1 I have shown four cylinders, but it will be understood that any number, more or less, may be provided, according to the requirements.

The rotary structure B is mounted upon the main shaft 13 and consists of a heavy rim of sufficient strength for the purpose,

supported by spokes 14 from a central hub 15, which is keyed to said shaft. Said rotary structure B may be a unitary structure extending from end to end of the motor or englne, or, as will be readily understood, it may be composed of sections properly joined together and mounted within the outer casing A. The joints between said internal rotary structure and stationary external casing are preferably formed by interengaging grooves and flanges as shown most clearly in Fig. 1. Said connections are slidable so that the rotary structure willrotate freely within the stationary structure which is rigidly and securely mounted upon a Suitable base or frame, not shown, as from side supports A. In Fig. 1 the intermediate oints are shown as composed of heavy films a having overlapping edges, the rims being bolted to the internal structure and overlapping annular flanges on the sides of the sections of casing A. It will be understood, of course, that the particular details of construction may be varied and that, as shown, the structure is merely a suitable form to illustrate the broad idea of the invention comprising the relative arrangement and general construction of parts whereby the operation and result desired are secured.

At intervals, preferably on diametrically opposite sides of said rotary structure, sliding pistons 16 are mounted in radial grooves or sockets therein, being normally held outward, with their faces bearing against the inner face of the casing A, by means of springs 17 which are mounted within said pistons and hear at one end against the inner ends of said sockets and at their outer ends against cross bars forming a part of said pistons. Packing strips 18are mounted in the faces of said pistons as shown. Extending back from each piston for a distance the surface of said rotary part is formed flat, or extends tangentially to the circumference, forming for a short distance a wider space between the periphery of the rotary structure and the interior surface of the casing. Said casing A is correspondingly formed at points on opposite sides and these portions of the chamber are designed for the explosion chambers, indicated in Figs. 1 and 3by E. An inlet valve 19 leading from the carbureter, or mixture supply, is located' at one end of said explosion chamber E and a sparker 20 of any appropriate type is located in juxtaposition thereto. A sliding cut-ofi plate 21 is mounted in the radial socket with piston 16, on the front side thereof, and is normally held extended by springs 22 which are interposed between the inner ends of the legs of said plates and the bottom of said socket. Another sliding cut-off plate 23 is mounted in the combustion chamber head, adjacent to the explosion chambers, and is also adapted to slide out and in and is held in normal contact with the surface of the rotary structure B under spring pressure. A spent gas exhaust 25 is provided just at the end of the working chamber close to the entrance to the combustion chamber.

I will term each part of the rotary structure serving as one side of a piston chamber and the part of the casing A in which it revolves as a c linder and as before stated, it will be understood that such cylinders may be as many or as few as required to secure the power desired for the motor. The explosion chambers E are spaced around each cylinder. In the structure shown there areftwo of such explosion chambers in each cylinder and four cylinders. The explosion chambers of the different cylinders are, however, located at different pointspredetermined degrees apart around the circumference of the structure.

In operation, the parts being constructed and assembled as shown and described, and shaft 13 being set in motion, by any cranking mechanism, as in other types of explosiveengines, pistons 21 of the several cylinders passing along the chambers between rotary structure B and the casing A will meet the inclined cut-ofi portion 26 of the interior walls of said casing and be forced inward in a radial direction until they pass under the dividing bridge-wall 27, which is located to be in practical contact with the periphery of rotary structure B and to cut off any communication between the explosion chamber and the section of the chamber behind said bridge-wall, which is the exhaust end of the working chamber. Sliding cut-off plate 23 serves to prevent communication between the two parts at this point. As said rotary structure B revolves each sliding cut-ofi? plate 21 passes under the bridge-walls 27 of the appropriate cylinders and as soon as they pass said bridgewalls springs 22 force them outward into contact with the internal face, of the casing A, and cause a suction, creating a vacuum in the respective explosion chambers behind each plate 21. As soon as piston C is released it also slides outward into contact with the surface of casing A, furnishing a solid and substantial inner end to the explosion chamber of the worm shown in Fig.

2. The sparking mechanism is timed to create a spark when the piston shall have reached the position substantially as shown the structure and directing their force in a uniform direction against their respective pistons and carrying the rotary structure forward under the power thus generated. Two like explosions will take place in the adjacent cylinder at points a predetermined degree from the points at which the first explosions take place, and so on throughout the series of cylinders comprising the motor, so that at each revolution" of the motor as many explosions can be provided for as required to generate the power needed. As each piston approaches the succeeding explosion chamber, it forces the spent gases ahead of it through the exhaust ports 25, thus keeping the working chambers clean at all times. The motor may be kept cool by a constant circulation of water in the water jacket formed in the outer casing, as before described.

It will be understood, of course, that various modifications in the details of construction and arrangement of parts may be made without departing from my invention, which consists, broadly, in the structure of a motor wherein several rotary structures mounted on a single shaft are acted upon successively in chambers arranged in a series to maintain a continuous impulse in a uniform direction. While I show a construction adapted for two explosions in each chamber, as before stated, this can be modified as desired,

or found necessary, in order to accomplish the desired result.

Having thus fully described my said invention, what I claim is new and desire to secure by Letters Patent is:

1. A rotary explosive engine comprising a casing having an annular internal chamber, a bridge-wall mounted on the casing, a

rotor operable within said chamber, sliding cut-ofi plates mounted on said casing and rotor respectively and cooperable therewith to form a chamber to receive the explosive mixture, a piston carried by the rotor radially movable into the explosive chamber, and an igniting means located in said explosive chamber, substantially as set forth.

2. A rotary explosive engine comprising a casing having an annular internal chamber, bridge-walls mounted on the casing, a rotor operable within said chamber, sliding cut-off plates mounted on said bridge-walls operable to engage the rotor, sliding cut-oil plates mounted on the rotor operable to engage the casing, and said sliding plates with tion and a bridge-Wall, and formed with an annular internal chamber, a rotor operable within said chamber, a cut-off plate slidably mounted in the bridge-wall and operable to engage the rotor, a cut-off plate slidably mounted on the rotor and operable to .en-

gage the casing, said plates with the tangential projecting portion and the bridge-wall providing a chamber to receive the explosive mixture, a piston carried by the rotor immediately adjacent the rotor sliding plate and radially movable into the explosive chamber, and an ignition means located in said explosive chamber, substantially as set forth.

4. A rotary explosive engine comprising a casing having a plurality of annular internal chambers, each of said chambers having a diametrically opposed pair of tangential projecting portions and bridge-walls, rotors operable within said chambers respectively, cut-off plates slidably mounted in said bridge-walls and operable to engage the rotors, eut-ofi' plates slidably mounted on the rotors and operable to engage the walls of the chambers, said plates with the tangential projecting portions and bridgewalls providing chambers -to receive the explosive mixture, pistons carried by the rotors immediately adjacent the rotor sliding 'plates and radially movable into the explosive chambers, and an ignition means located in each of said explosive chambers, substantially as set forth.

5. A rotary explosive engine comprising an external casing having an internal annular chamber, said chamber being divided into parts by bridge-walls and extending on one side of said bridge-wall tangentially to the circumference thereof and on the other side being curved from the interior face of said bridge-wall to the normal interior face of the casing, a rotor within said casing, radially-sliding pistons mounted in said rotor, the surface of said rotor being formed to extend tangentially for a distance back'from each of said pistons, substantially as set forth.

In witness whereof, I have hereunto set my hand and seal at Vashington, District of Columbia, this twenty-third day of J anuary, A. D. nineteen hundred and thirteen.

CESAR CASTRO. [L. s.]

Witnesses:

E. W. BRADFORD, A. M. PARKINS.

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