US368209A - Steam-actuated valve - Google Patents

Description

(No Model.)

M. HASTINGS.

STEAM AGTUATED VALVE.

Patented Aug. 16, 1887.

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UNITED STATES PATENT OFFICE.

MICHAEL HASTINGS, OF BROOKLYN, NE? YORK.

STEAM-ACTUATED VALVE.

SPECIFICATION forming part of Letters Patent No. 368,209, dated August 16, 1887.

Application rn'en April 14, 1887.

To all whom it may concern:

Be it known that I, llIICIIAEL HASTINGS, a citizen of the United States, residing in the city of Brooklyn, county of Kings, and State of New York, have invented certain new and useful Improvements in Steam-Actuated Valves for Steam-Engine Cylinders, of which the fol lowing is a specification, reference being bad to the accompanying drawings.

My invention relates specially to the improvement of steam-actuated valves in which the slide-valve is directly attached to a cylinder operated to and fro upon a piston held fixed within a steamehest, the object of such improvements being to obtain a more efficient control of the movements of the valve while closed within the chest and to render its operation easy and noiseless, as well as to improve the durability of the several details of con struction and operation.

In the accompanying drawings, Figure 1 represents a longitudinal section through a steanrchest provided with a steam-actuated valve, and means of adj ustment embodying my improvements. Figs. 2, 3, 4, and 5 represent views in detail of the several parts or portions combined to effect my improvements.

Similar letters of reference designate like parts in all the figures.

A designates a portion ofmain-cylinder piston; B, the steam and exhaust ports of the main cylinder; 0, the movable valve-carrying cylinder; D, the piston upon which the valvecarrying cylinder moves to and fro to open the steam and exhaust ports of the main cylinder. The movable valve-carrying cylinder is operated by the admission of steam through small ports in the usual manner.

D designates the piston-rods extending in both directions from the piston itself, such rods acting as guides to the valve-carrying cylinder.

E designates the heads at each end of valvecarrying cylinder.

F designates a pair of stopdisks, each of which fits snuglyinto a pocket or recess formed in the outer face of heads F.

G designates a nut for fastening these stopdisks F firmly in place upon the piston-rods D.

His a cupguide fitting loosely over the ends (2 of piston-rods D. It also fits at the opposite end into the sleeve end of adj ustingbox Serial No. 234,743. (No model.)

I. This adjustingbox I is fastened into the ends of chest, and takes the whole thrust of the operation of the valve.

J is an adjnstingscrew, through which the throw of the valve is regulated in relation to the position of main-cylinder ports and the equalized admission of steam to the main piston.

K is an open guard protecting adjustingscrew J and jamming the adjusting-box I in place in the ends of steam-chest.

L is a special filler, made preferably of cork, placed within pressure-spring O to prevent clatter, or to prevent trouble in case of the weakening or breaking of the spring O.

M is a special washer between the point or end of adj usting-screw and pressure-spring O.

c c c are water-channels located at the lower circular surface of stop-disk pocket in heads E.

d d designate the ends of piston-rods D, extending into pocket of cup-guide II.

The valve-carrying cylinder, the piston, and rods, as also the disks, are constructed alter common methods; but my improvements consist specially in providing the adjusting-box and its associate details or equivalents so that the throw and location of the valve with reference to the main-cylinder ports may be regulated without opening the chest, and even while the piston and valves are in operation. This adj usti ng-box is preferably constructed as shown. The steam-chest is somewhat lengthened and into its ends is fastened the adj ustingbox I, screwed into place and jammed by means of the guard K, as shown. Into the outer end of this adjusting-box I a screw-bolt, J, is set, pressing against a washer, M, bearing upon a strong spring, which. in turn bears upon the turned ends of cup-guide II, as shown. Both ends of steanrehest are fitted with the same means of adj ustmcnt, and by the release of one and screwing up of the other the position of the valve in its relation to the port faces and edges is changed and controlled. To assist the spring 0 in taking care of the thrust of operation, a series of water-grooves, e c, are cut in the bottom face of dislcpocket in head E. Into these grooves or channels water lodges, and upon the inward movement of stop-disk F the water is forced up into the space between the disks and heads as they come together, cf-

grooves or channels, a, cut into the bottom of feeting an easy cushioning of the valve in its movement overthe ports.

What I claim as new, and desire to secure by Letters Patent, is

1. In a steam-actuated valve, the combination of the stop-disk pocket E, a series of said stop-disk pocket, and thcstop-disk F, substantially as and for the purposes specified.

2. A regulator for steam-actuated valves, consisting of an adj usting-box attached to the ends of the steam-chest, and adj usting-screw operating within said box, a cushion-spring, O, and cup-guide H, acted upon by said ad- I 5 j Listing-screw, substantially as shown and described.

MICHAEL HASTINGS.

\Vitnesses:

WM. 1-1. WEIGIITM'AN, A. M. PIERCE.

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