US141710A

US141710A - Improvement in rotary steam-engines

Info

Publication number: US141710A
Authority: US
Publication date: 1873-08-12
Anticipated expiration: 1890-08-12

Description

S. GIBSON.

Rotary Steam-Engines.

Patented'August 12,1873.

UNITED STATES PATENT OFFICE.

SAMUEL GIBSON, OF YORK, PENNSYLVANIA, ASSIGNOR OF HIS RIGHT TO HIBAM YOUNG, OF SAME PLACE.

IMPROVEMENT IN ROTARY STEAM-ENGINES.

Specification forming part of Letters Patent No. 141,710, dated August 12, 1873; application filed June 20, 1873.

To all whom it may concern:

Be it known that I, SAMUEL GIBSON, of York, in the county of York and in the State of Pennsylvania, have invented certain new and useful Improvements in Rotary Steam-Engines; and do hereby declare that the followin g is a full, clear, and exact description thereof, reference being had to the accompanying drawings and to the letters of reference marked thereon making a part of this specification.

The nature of my invention consists in the construction and arrangement of a rotary steam-en gine, as will be hereinafter more fully set forth.

In order to enable others skilled in the art to which my invention appertains to make and use the same, I will now proceed to describe its construction and operation, referring to the annexed drawing, in which- Figure 1 is a longitudinal section of my rotary engine. Fig. 2 is a transverse vertical section of the same. Fig. 3 represents the head of the cylinder, in which is the steaminlet; and Fig. 4 is a perspective view of one of the valves.

A represents a cylindrical casing of any desired dimensions, and supported upon any suitable stand or frame. B is the steam-pipe to be connected with the boiler, and from which the steam passes through a passage, to, into the interior of the cylinder. The steampassage 0. opens into the upper end of a semicircular groove or recess, b, formed in that head of the cylinder. 0 represents a wheel placed eccentrically within the casing A upon a horizontal shaft, 61, which passes through the heads of the cylinder above the centers of the same. In the wheel 0 are made two slots, extending from opposite sides inward beyond the center, and one on each side of the same. In these slots are inserted the valves D D, which are constructed as shown in Fig. 4, each having a recess, f, on one side, with a passage, 0, leading from the same out through the edge. h represents the exhaust-port. The circumference of the wheel 0 is madeconvex, as made in Fig. 2, and the inside of the casing is made concave to correspond.

The steam entering through the inlet-pipe B passes through the passage on into the groove b, and from there through the passage 0 into the recess f on the valve, forcing the same outward. As the wheel is revolving the valve is forced out by the live steam, which, after the valve has been moved a certain distance, passes from the recess f into the casing, and then acts on the valve to turn the wheel; at the same time the steam behind the inner end of the valve keeps the same out against the casing. -When the wheel has made a little less than one-half of a revolution the valve is forced inward by the space between the wheel and the casing contracting, and the valve-slot passes from beyond the groove 1) before the other valve reaches the upper end of said groove. Thus the steam is cut oil from one valve before the other valve commences to take on steam, and the wheel is kept on revolving by the expansion of the steam, and as soon as the valve passes the exhaust-port h the steam is exhausted through the same.

Suitable packing may be attached on the outer ends of the valves D D, if so desired.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-- 1. The valves D D, provided each with a recess, f, and passage 6, and placed in slots in the wheel 0, as described, and operated by the live steam through the passage 1), substantially as and for the purposes herein set forth.

2. The combination, in a rotary engine, of the steam-inlet passage as and the curved passage or cut-off I) in the cylinder-head A with the wheel 0 and its valves D D, whereby the steam is caused to operate upon the valves before it enters the casing, substantially as set forth.

3. The combination of the casing A with inlet B, passage a, groove 1), and exhaust h, slotted wheel 0, and valves D D, having recesses f and passages c, all constructed and arranged substantially as and for the purposes V herein set forth.

In testimony that I claim the foregoing I have hereunto set my hand this 14th day of March, 1873.

SAML. GIBSON.

Witnesses: PETER AHL, J r.,

SAMUEL WALLIOII.