US48577A - Improvement in rotary engines - Google Patents

Description

UNITED STATES PATENT OFFICE.

IMPROVEMENT lI N ROTARY ENGINES.

Specification forming part of Letters Patent No. 48,577, dated July 4, 1865.

To all whom it may concern:

Be it known that we, TRUMAN MEREIAM and JAMES. CUSHING, of the village of Waterloo, in the county ot' Jeerson and State of Wisconsin, have invented a new and useful Improved Numerical Reciprocating Rotary Steam-Engine; and we do hereby declare that the following is' a full, clear, and exact description of the"construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, in which- Figure l is a perspective view of the eugine. Fig. 2 is a view of the face-plate. Fig. 3 is a transverse view of Fig. 2. Fig. 4 is a view ofthe semicircle. Fig. 5 is a view ofthe steam-chest. Fig. 6 .is a transverse view of the chest. Fig. 7 is an edge of the steam-chest. Fig. 8 is parts ot' the oscillating joint and steam-pipe. Fig. 9 is the exhaust cap and pipe. Fig. 1() is the boxes and plates with setscrews. Fig. 12 is the cross-head and frictiontruck in pieces and together.

Letter A, Fig. 2, shows the ports in the face plate; letter C, Figs. 2 and 3, thc shaft; D, the drum; O O O O, the apertures through the drum; F F F, the cylinders; G G, the sliding rods; I I, the friction-trucks; K, the rim; H andJJJ J,Fig. 12,the friction-trucks in pieces and together. Letters M M, Fig. 4, show the inside and outside lianges of the semicircles; N N N N, Fig. 5, the circular raised apertures in the steam-chest; E, the depression in the steam-chest; L, Fig. 8, steam-pipe; R, Fig. 1, the lever on the chest; P P P, Fig. 10, the set screws in the plates on the boxes.

The shaft C is so constructed that it rests on the boxes, Fig. 10, with male and female centers at each end of the shait. On the shalt is the drum D, Fig. 3, on which rests the end of the twelve cylinders F F F, more or less, to suit the maker, and modify the power of the engine. The cylinders F F are attached to the back side of the faceplate, Fig. 3. The sliding rods G Gr are connected to the cylinders F F, and extend to the rim K, upon which the cross-head H, Fig. 12, with the friction-trucks attached, slide, the piston rodand head being attached to the cross-head II, with one or two friction-trucks, I I I, as the velocity may require, on each side, to run on the semicircles M M, by which the rotary motion and power are obtained.

The steam-chest, Fig. 5, rests on the shaft 0,' with circular-raised apertures N' N, adapted to the ports A A, in the faceplates, Fig. 2, so as to admit the steam into the cylinders yF F at each end, alternately producing the outward and inward motion of the piston and frictiontrucks I I on the flanges M M of the semicircles, Fig. 4, the steam alternately entering and escaping at the four centers as the ports pass them, and finally escaping into the depressed part E ofthe steam-chest, Fig. 5, thence through the aperture 0 O in the drum D into the exhaust cap and pipe, Fig. 9.

0n the transverse view of chest, Fig. 6, is the oscillating steam-joint, Fig. 8, to which is attached the steam-pipe L,` that conducts the steam into the steam-chest, Fig. 5, and admits the chest to oscillate one-quarter and reverse the motion of the engine by means ofthe lever R on the chest.

In the plates on the boxes, Fig. 10, are the set-screws P P P, by which the steam-chest, Fig. 5, is adj usted to the face-plate, Fig. 2, as also the exhaust cap and pipe, Fig. 9, to the drum D.

What we claim as our invention, and desire to secure by Letters Patent, is-

l. The arrangement of the cylinders and pistons upon a revolving drum on a shaft, in combination with a face plate and ports, and adapted to circular apertures in a stationary steam-chest, so that a constant pressure of active steam may be alternately applied to the pistons, thereby increasing the leverage and speed, as herein set forth and described.

2. The two semicircles, in combination with friction-trucks on a cross-head, by which, in connection with the movement of a common piston, rot-ary motion and power are obtained, as herein set forthand described.

3. The steam-chest, with an oscillating joint in such a peculiar arrangement andadaptation to a face-plate as will admit steam to cylinders and permit the chest to revolve oneqnarler, and thereby reverse the motion of the engine, as herein set forth and described.

TR UMAN MERRIAM. JAMES UUSIIING.

Witnesses:

A. B. BISHOP, Ons. BOWMAN.

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