US71337A - Improvement in steam-engine piston-valves - Google Patents

Description

@uiten tetra ige-trat @Hita IMPROVEMENT IN STEAM-ENGINE PISTON-VALVES.

@the tlgrmle :sistemata in there trttn tant mit making part at tte salu2.

To ALL WHoM rr MAY coNcERN:

Be it known that I, ISAAC SOULE,.of Albany, in the county of Albany, and State of New York, have invented a new and useful Improvement on Balance-Valves for Steam-Engines; andI do hereby declare that the followvngs afull, clear, and exact description of the construction operation of the same, reference being had to the annexed drawings, making a part of this specification, in whichv Figure 1 is a longitudinal central sectional view of the steamehest and cylinder, with my valve and spirallyslotted bushing applied thereto.

Figure 2 is au end sectional view taken in the line :e zig/fig. 1.

Figures 3 and 4 are detail views or isolated parts of `my invention.

The object of this invention is to render balance-valves more easily operated than any heretofore used, by admitting the steam between the two followers or sliding-disks, secured to a rod, and arranged within a suitable cylinder, and also permitting the exhaust steam from the engine to act upon or against said followers in Suche. y

manner asrto accelerate the motion, or assist the operation of said valve. The followers slide withindetachable bushings, provided'with spiral slots, to prevent the packing-rings of the followers from becoming unequally worn or ehannelled. Said slots, with encircling chamber, form the steam-ports.

- To enable others skilled in the art to fully understand and construct my invention, I will proceed to describe it, as follows:

A, figs. 1 and 2, represents an ordinaryengine-cylinder, and tt-ed so as to have secured therctoa cylindrical steam-chest, B, and having steam communication together, at the ports b b. The exhaust-portie represented at c e, fig. 1. The steam is admitted into the chest 13 at the point d, and` between the followers e e. Said followers are provided with suitable packing-rings, in order to compensate for the wear that they are subjected to in passing or sliding within and in contact with the inner surface of the spirally-slotted bushingff. The disks -or followers e e are secured to a rod in such a manner as to give the proper lap and lead at the steam-ports in the bushingsff. In the drawing, fig. 1, steam is represented as entering the cylinder A through the port b,

and exhausted through the port b. It, therefore, will be rcadily'perccived the advantage that this arrangement possesses over other balance-valves, wheuused in connection with the detachable, spirally-slotted bushings ff.

1. I claim the bushings ff, constructed substantiallyas and for the purpose speeied.

2. I claim the steam-passages arranged as described, with reference to the followers e'e and bushings ff,

for the purpose herein set forth. Y

ISAAC SOULE.

Witnesses:

J. W. Ln'rennn, G., C. HEGEMAN.

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