US621721A

US621721A - Rotary engine

Info

Publication number: US621721A
Authority: US
Publication date: 1899-03-21
Anticipated expiration: 1916-03-21

Description

Patented Mar. 2l, |899.

J. SPI-:NCL RTARY ENGI NE. (pblication filed Dc. 9, 18980 UNITED STATESy PATENT, OFFICE.

JOHN SPENCE, OF ERIE, PENNSYLVANIA.

ROTARY ENGINE.

i SPECIFICATION forming part of Letters Patent No. 621,721, dated March 21, 18959.

Application filed December 9, 1898- Serial No. 698,744. (No model.)

To @ZZ whom it may concern:

Be it known that I, JOHN SPENCE, a citizen of the United States, residing at Erie, in the county of Erie and State of Pennsylvania, have invented certain new and useful Improvements in Rotary Engines; and I do declare the following to be a full, clear, and eX- act description of the invention, such as will enable othersl skilled inl the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and

'to the letters of reference marked thereon,

which form a part of this specification.

This invention relates to new and useful improvements in steam-engines, and especially to a rotary eccentric piston type, in which a steam-chest is provided with a rocking valve designed to open and close alternately two ports which merge into one ductimmediately before the interior lof the steam-cylinder is `vention may pertain the same consists, further, in the novel construction, combination,

and adaptation of parts, as will be hereinafter more fully described and then specifically defined in the appended claim.

Myinvention is clearlyillustrated in the accompanying drawings, which, with the letters of reference marked thereon, form a part of this application, and in which- Figure l is a side elevation-of my engine, showing one of the cylinder-heads removed. Fig. 2 is a sectional view through one of the wings carried by the rotary disk. Fig. 3 is a detail view of one of the wings, showing the spring-actuated strip at the end to take up wear and make a steam-tight contact with the cylinder-head.

Reference now being had to the details of the drawings by letter, A designates the casing or cylinder, in which is j ournaled the shaft B, carrying the rotary disk-C. Mounted in recesses in said disk are the Wings D, which are spring-actuated, the springs E being provided to force the wings outward to receive the impact of the steam, which is fed from the steam-chest. Each end of the wings is grooved, as at F, to receive a packing-strip G, and each packing-strip has pins G',- designed to be seated in holes D in the wing, and a spring H is provided to throw the strip out from the wing toward the cylinder-head K. Seated in the faces of the diskare the semicircular rings M, and a spring or springs M are provided, which are seated in the grooves channeled to receive said semicircular rings. These sectional rings are designed to be thrown out against the cylinder-heads to form a steam-tight contact with the same.

The portion of the chamber surrounding the rotary disk is enlarged, as at A', in which enlarged portion the wings are disposed when receiving the impact vof the steam, and at one end of this space is an eXhaust-port'R, while at its opposite end is a duct S, having branching ducts S' and S2, which latter ducts lead into the steam-chest T. Mounted in this chest is a shaft Q, to which is fastened the rocking shoe or cut-o valve J. This cut-off valve conforms to the curved surface of the steamchest and is of sufficient length to close both of the ducts S' and S2, but when rocked to alternately open and close said ducts. The valve is rocked by means ofl eccentric connection with the main shaft, as shown.

In operation it will be observed that by the arrangement of the ducts leading away from the steam-chest and opening at one end of the enlarged space in the steam cylinder the steam is allowed to force one of the wings throughout the length of the enlarged space in the cylinder from steam coming from one duct S' or S2, and by the time the second wing comes adjacent to the outlet 'of the duct S the cut-o valve will have rocked back, so as to open a steam-duct and allow steam to propel the second wing.

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

IOO

In a rotary concentric engine, the combina tion with the casin g, the shaft mounted therein and disk carried by said shaft, the springactuated pistons D having their ends slotted l into a single duct Sbefore entering the steain- 1o as at E, the spring-actuated packing-strips G cylinder, all as shown and described.

having lugs designed to be seated in holes in ln testimony whereof Iafiix my signature the said recesses, the seinicircular packingin presence of tWo Witnesses.

rings M and springs M disposed about the 1 outer faces of said disk adjacent to its cir- JOHN SPLNCE' culnference, the steam-chest having a rocklVitnesses: ing cut-oit valve, from which steam-chest the MARTIN J. DELANEY, branching ducts S' and S2 lead, and merge JOHN S. TURNBULL.