US569693A - Rotary engine - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

I. WANNER.

ROTARY ENGINE.

No. 569,693. Patented Oct. 20, 1896.

gal/711 58858.- aac INVENTOR CJAHZLMM ATTORNEY.

UNITED STATE PATENT FFICE.

isAAc WANNER, or VERA CRUZ, INDIANA.

ROTARY ENGIN E.

SPECIFICATION forming part of Letters Patent No. 569,693, dated October 20, 1896.

Application fil d December 13, 1895- Serial No. 572,084. (No model.)

To all whom, it may concern.-

Be it known that I, IsAAc WANNER, a citizen of the United States, residing at Vera lruz, in the county of Allen, in the State of Indiana, have invented certain new and useful Improvements in Rotary Engines; and I do hereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, which form part of this specification.

My invention relates to improvements in rotary steam-engines which are adapted to be operated by any fluid under pressure; and its objects are to provide an improved engine of that class which shall be more perfect in its operation, conserve more power, and which can be more economically manufactured and operated; and the invention consists in the construction and novel combination of parts hereinafter described, pointed out in the appended claims, and illustrated in the accompanying drawings, in which- Figure 1 is an end view with parts broken away and partly in cross-section. Fig. 2 is a vertical section of the piston and its packing and the disk; and Fig. is a longitudinal section of Fig. 1, taken on the broken line no no.

The construction is as follows: A piston wheel or hub 4 is arranged eccentricallywithin the cylinder 8, and is provided with two slots 5, radially opposite each other, for the reception of the pistons 15. These slots are made larger from their openings inwardly for the purpose of afiording room for the variable positions of the piston within the slot during its revolutions, and also to provide a smaller area of contact with the piston at the periphery of the hub 4. Two disks 12, one on each side of the pistonhub at, are provided or formed with beveled peripheries adapted to revolve in the beveled ends 9 of the cylinder 8, so that the beveled ends 9 of the cylinder form a valve-like seat for the disks 12. These disks 12 have a central orifice 21, through which the driving-shaft 6 passes, and of such diameter as to permit its free revolution without binding on the shaft 6. The cylinderheads 10 and the disks 12 are constructed to have or provide a small space between them,

or port 11, through which steam is supplied to the engine. There are two such pipes to each space, connected, respectively, with the induction and the eduction pipes or ports 11, one setof which is closed while the other set is in operation, one pipe 14 at each end of the cylinder. When the engine is reversed, that set of pipes leis closed and the first set is opened. This is the preferable construction for supplying live steam to the spaces between the cylinder-heads 10 and the disks 12. Other methods will suggest themselves to those skilled in the art.

The essential features are a space for the steam between the cylinder-heads l0 and the disks 12 and a steam-pipe for the supply of live steam to such space. Such construction, in combination with the beveled construction of the peripheries of the disks and inner ends of the cylinder, provides a tight bearing, causes the disks to always revolve upon an axis exactly coincident with that of the cylinder, and the fitting of the joints is continually preserved and is self-adjusting. The piston-hub i is constructed to also have a bearing and form a steam-joint with the disks 12, the disks impinging equally against the beveled edges of the cylinder 8 and the ends of the hub 4. As the parts wear the fitting becomes more perfect. The pressure of the live steam back of the disks 12 forces them against all the bearings and causes a friction that soon wears the parts to a uniform bearing if not so made perfectly in the first instance. The importance of this in a rotary engine cannot be overestimated.

The pistons 15 are rigidly attached at their ends to the disks 12 separately, that is, one piston to each disk, and at right angles to the plane of the disk, as shown in Fig. 2, and are provided with suitable packing on their tops and free ends, preferably with the packing hereinafter described. This construction permits the pistons 15 to have separate and insurfaces, but not to make steam-joints.

dependent vibrations,which is a necessity for successful operation where there are two or more pistons rigidly attached to disks carrying them. It also permits a construction of packing that is automatically adjustable from use or wear, for where the vibrations are different or not coincident with each other the wear on the friction-surfaces is necessarily different, and where pistons are attached to disks or ringeplates two or more pistons can not be used if the pistons are rigidly attached at both ends to both disks or plates, because the revolution of the pistons and the revolution of the piston-hub are on different axes.

I prefer to pack the pistons so as to make the packing self-adjustable as it is worn by use. For such purpose I provide seats for metallic packing -pieces 17, preferably by forming grooves 16 on the top and ends of the pistons 15. The metallic packing-pieces 17 fit in and are held in place by these grooved seats. Coiled springs 18 are placed under them to keep them in position against their bearing- The steam-tight joint is made by the steam entering under and forcing itself against these packing-pieces,holding them tightly against the bearing-surfaces of the cylinder, pistonhub 4, and the disks, againstwhich they impinge. A packing-piece 19 is placed in the cylinder between the induction and eduction ports 11 to form a joint between the cylinder 8 and the piston-hub 4. Coiled springs .18 support it in position, and its action is similar and of the same mode of operation as that of the pistons 15 above described. The induction and eduction ports have both the same numeral, 11, of reference, as they are reversiblein their functions as the engine is reversed from right to left rotary movement.

The operation will readily appear from the drawings and the functions and descriptions above set forth without further description.

Having thus described my invention, what I claim as-new, and desire to secure by Letters Patent, is

1. In a rotary engine, the combination of a cylinder provided with beveled edges on its inner ends: a piston-hub arranged eccentricallytherein: two disks for carrying the pistons provided with beveled peripheries adapted to revolve in and against the beveled edges of the cylinder and against the piston-hub: steam-pipes adapted to discharge live steam between the disks and cylinder-heads: two pistons attached separately to the disks, one to each; and provided with seats for metallic packing pieces for said pistons: metallic pieces for said pistons: a metallic piece placed within the cylinder between the ports: and springs placed under the metallic pieces to hold them in position respectively.

2. In a rotary engine, two disks for carrying two pistons independently of each other, provided with bevel-shaped peripheries and a cylinder having its ends beveled to form seats for the disks.

3. In a rotary engine, two disks for carrying two, pistons independently of each other adapted to be revolved against the ends of the cylinder respectively in seats provided therefor, cylinder-heads placed so as to form a chamber between them and the disks, and steam -pipes forming a communication between said chambers and the induction-port respectively.

4:. In a rotary engine, two disks placed at opposite ends of the cylinder in combination with two pistons rigidly attached, one to each disk, and the two disks with their respectively attached pistons arranged to move independently of each other.

\rVitness my hand this 10th day of December, 1895.

ISAAC IVANNER.

In presence of H. O. HARTMAN, M. HARRIS.

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