US249345A

US249345A - Rotary steam-engine

Info

Publication number: US249345A
Authority: US
Publication date: 1881-11-08
Anticipated expiration: 1898-11-08

Description

(Modell) C. B, & H. H. HALSTBAD.

EOTAEY STEAM EEGJLNE.l

Patente-d Nov. 8,1881.

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UNITED STATES PATENT OFFICE.

'CHARLES B. HALS'IEAD AND HENRY H. HAIJSVTEAD, OF RANTOUL, ILLINOIS. i

ROTARY STEAM-ENGINE,

SPECIFICATION' forming part of Letters Patent No. 249,345, dated N ovember 8, 1881.

i Application filed June 6, 1881. (Model.) i

appertainns to make and use the same, reference being had to the accompanying drawings, and to the letters or figures of reference marked thereon, which form a part of this specification. Y Y

This invention `relates to -rotary steam-engines; and it consists in certain improvements after stated. The piston-chamber is divided made in two parts bolted together, said parts being recessed to form a chamber for thepiston-wheel B on the shaft a, which has suitable bearings, as shown. The piston-wheel has a number of radial pistons, D, four being preferred and shown, each piston being made flat and ilaring outward, and ending inward with a small shaft, c, passing into a socketin the hub C, so that the piston is free to turn, as hereinby the projections b, extending toward each other from both sides ofthe chamber, said pro- 40 jections being provided with suitable packing,

and leaving enough space between them for the piston to pass through edgewise. The turning of each piston D is effected by means of cogs or teeth d on .its shaft c, the hub C b eing recessed for them, as shown. These cogs, coming in contact with an irregular or recessed surface, E, adjacent to the hub, cause the piston to turn, one impin gement turning itedgewise, as shown in Fig. 1, so thatit stands across the chamber,

fitting the space, the edges of the piston hav ing suitable packing.

F and F are the upper pipes, severally leading to each division of the piston-chamber, and G and G are the lower pipes, communicating with each division in like manner. These pipes serve for the admission and discharge of steam. as when steam is admitted through pipes F and G the wheel is rotated in one direction, and the other two pipes are discharge-pipes; and when, to reverse the engine, steam is admitted through F and G', the wheel is rotated in the opposite direction, and the pipes F and G become discharge-pipes.

supposing the piston-wheel to be inthe position shown in Fig. 1, two of the pistons being in the same plane with the wheel and two standing across the chamber and on a horizontal line, and steam is admitted through pipes F and G, one of the ends of the section of `the wheel B and the projections b b form the abutmentagainst which the steam reacts. The steam passing from said pipes in the direction indicated by the arrows :v is caught by the two horizontal pistons, and the wheel B is rotated in the direction indicated by the arrows, the

pipes F and G being discharge-pipes. So, as V will be observed, each piston D takes alternately two positions in the chamber or cylinder as thewheel B is rotated. In one position the piston stands in the same plane with the wheel, so that itmay pass between the projections b, and after such passage it is turned toa position edgewise and across the chamber by a cog, d, impinging against the irregular surface E, the parts being usually so constructed and arranged that the piston changes its position once in each quarter of arevolution of the wheel B.

Having described our invention, we claim- 1. In a rotary steam-engine, a piston-wheel having pistons D, provided with cogs d, in combination with an irregular surface, E, substantially as and for the purposes described.

2. In a rotary engine,the piston-wheel chamber having the central inward projections, l), and the pipes F F and G G', communicating with the chamber, as shown, in combination with wheel B, having pistons D, provided with cogs d, and the irregular surface E, substantially as and for the purposes described.

In testimony whereof we aflix our signatures in presence o t' two witnesses.

.CHARLES B. HALSTEAD. HENRY II. HALSTEAD.

Witnesses S. Boorn, DELMORE DODGE.

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