US228861A - Rotary engine - Google Patents

Description

J. H. BLAKE. Rotary Engine.

No. 228,861. Patented June 15, 1880.

WITNESSES a, /w/M ATTORNEYS.

UNITED STATES PATENT Fries.

JOHN H. BLAKE, OF BATAVIA, NEW YORK.

ROTARY ENGINE.

SPECIFICATION forming part of Letters Patent No. 228,861, dated June 15, 1880.

Application filed November 3, 1879.

To all whom it may concern:

Be it'known that 1, JOHN H. BLAKE, of Batavia, in the county of Genesee and State of New York, have invented a new and Improved Rotary Engine, of which the following is a specification.

Figure 1 is an end elevation. Fig. 2 is a sectional end elevation on line as a, Fig. 3. Fig. 3 is a sectional front elevation. Fig. 4 represents front and end views of the dog in position.

Similar letters of reference indicate corresponding parts.

The object of this invention is to provide a cheap and efficient rotary engine that consists of few parts and is economical in the consumption of steam.

The invention consists of an adjustable abutment, of a spring and crank-shaft for effecting the movement of the abutment, and of a rotary valve of simple construction.

In the drawings, A represents the enginecylinder. B B are the pistons fixed eccentrically on the shaft 0, that passes through the heads D D of the cylinder A, and also relatively eccentric to each other.

E is a disk fixed centrally on the shaft 0, between the pistons B B, and serving to divide the cylinder A into two interior chambers, and serving also to carry proper packingrings on its periphery and about the shaft 0, to prevent the escape of steam from one chamber to the other.

F is a rotary valve, which is cylindrical at the center of its length, so as to divide the valve-chamber G into two equal parts, and cut away to half its diameter at those parts that open and close the steam-ports of the engine,

thus making in effect a double valve. The

ends of this valve F are journaled in the cylinder-heads D D, so that it (the valve F) may, by suitable gear-wheel or other suitable engine connections secured on its outer end or ends, be made to revolve for the proper regulation of the steam-supply to the engine.

H H are the swinging abutments, having shoulders to projecting from them at right angles, and made adjustable in the groove I) of the cylindrical rocking hinge l by the key 0.

A short shaft, K, passes through the cylinder=head D, and has fastened on its inner end a dog, L, that enters the end of the groove 7) of the hinge I. On the outer end of this shaft K the crank-lever M is secured by set-screw d, or other convenient device, while the other end of the lever M is pivoted on pin f between the forks of the rod N, whose lower end passes through the lug O, which is fastened upon the cylinder head D. A spring, P, is coiled around the rod N. This device of shaft K, dog L, lever M, rod N, and spring P, in combination, is'for thepurpose of checking the momentum of the abutments H H when they are raised into their recesses g g by the action of the pistons B B, and for the further purpose of afterward restoring said abutment's to their primary position.

Steam entering the pipe Q when the parts are in the position shown in the drawings will pass into the valve-chamber G, and thence through the port h into the left-hand chamber of the cylinder A, as shown in Figs. 2 and 3; and, as the abutment H is immovable because of the angular contact of its lower edge with the piston B, the steam will press against and turn the said piston B, and thereby the shaft C and the piston B, so that the said piston B, in turning, shall come in contact with the rear of the abutment H and close the said abut-' ment H up into its recess g, thereby closing the steam-port h, the exhaust-steam at the same time escaping through the exhaust-port m. The cylinder receives steam as the adjoining chamber exhausts it, and this reciprocal action causes and maintains aconstant rotary motion of the shaft 0 and the pistons B B thereto attached.

When the lower end of the abutment H, bearing on the piston B, becomes worn, the key 0 can be taken out and filed down, so that the said abutment H may be set farther down, and lining-strips can be inserted in the space left over the top of the said key 0.

This arrangement does away with packing in the lower end of the abutment, which packing would be liable to fly out and break the engine by getting jammed in the steam-ports.

Each end of the engine is to be provided with the spring-rod and leverdevice for effecting the movement of the abutments, and in this double-chambered engine allthe moving parts and the steam and exhaust ports are duplicated.

Having thus described my invention, I

5 claim as new and desire to secure by Letters Patent- 1. In a rotary engine, the abutment H, provided with shoulder a, and keyed in the rocking hinge I by the adjusting-key c, substan- IO tially as herein shown and described.

2. In combination with the piston of a rotary engine, the hinge I, provided with groove 1) and key 0, in combination with the abutinent H provided with shoulder a, shaft K, and dog L, and crank M, rod N, and spring P, substantially as herein shown, and for the purpose described.

JOHN H. BLAKE.

Witnesses:

D. W. ToMLINsoN, JAMES M. HAMILTON.

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