US350718A

US350718A - William ievin bettis

Info

Publication number: US350718A
Authority: US
Publication date: 1886-10-12
Anticipated expiration: 1903-10-12

Description

(No Model.)

. I. BETTIS.

BALANGBD SLIDE VALVE.

No. 350,718. Patented Oct. 12, 1886.

UNITED STATES PATENT OFFICE.

VILLIAM IRVIN BETTIS, OF ORANGE, TEXAS, ASSIGNOR OF ONE-HALF TO D. MORRISON, OF SAME PLACE.

BALANCED SLIDE-VALVE.

SPECIFICATION forming part of Letters Patent No. 350,718, dated October l2, 1886.

Application filed June 23, 1856. Serial No. 205,993.

To all whom t may concern:

Be it known that I, WILLIAM IRvIN BETTIs, acitizen ofthe United States, residing at Orange, in the county of Orange and State of Texas, have invented certain new and useful Improvements in Balanced Slide-Valves, of which the following is a full, clear, and exact description, reference being had to Vthe accompanying drawings, forming part of this 1o specification, in which- Figure l is a side elevation of asteam chest with my improvements applied thereto. 2 is a plan View ofthe same. Fig. 3 is a sectional View on the line x :c of Fig. 2. Fig. 4

I5 is asimilar view on the line y g/ ot Fig. 2.

My invention relates to certain improvements applied to slide-valves for counterbalancing the pressure on the valve; and it consists in the peculiar construction and combi- 2o nation of devices which I shall hereinafter fully describe and claim.

To enable others skilled in the art to which my invention appertains, I will now describe its construction and indicate the manner in which the same is carried out.

ln the said drawings, A represents a steamchest of any suitable construction, having the usual valve-seat fora reciprocating slidevalve, and B represents a chamber bolted to the top i ofthe steam-chest, with its lower end in communication with the steam-chest through an opening, a, formed in the top of said chest.

Between the upper end of the chamber Band a cap or plate, O, bolted thereto is placed a L- diaphragm, D, whose surface may be either corrugated or plain. The valve E may be of the usual form of slide valve, and is connected. with an adjustable valve stem, F, which passes through a packing-gland, G, as illustrated in Fig. 3. From the construction and arrangement of these features it is clearly manifest the steam-pressu re in the steam-chest presses down upon the valve and up under the diaphragm, whereby the pressure on the diaphragm counterbalances the pressure ou the valve. From the upper side of the valve there project lugs b, between which is pivotally secured the lower end of a link, c,where by the valve is permitted to vibrate in the direction of its travel. The upper end of the link cis attached toalink, d, by a connection,

(No model.)

e, similar to that which secures the lower end of the link c, although the connection e is arranged at right angles to the first connection, whereby the valve may have a lateral movement to adjust itself' to its seat. A frame, H, cast or otherwise formed, is secured to the diaphragm with the aid of a collar or washer,

f, and is provided with a packing-box, g, and packing-gland IL, throughwhich passes astem or 6o rod, l, whose lower end is pivotally secured to the link d in a manner similar to the connections previously described. The upper end ot' thestein Z isthreaded and passes through the top ofthe frame H, and is secured by suitable iam-nuts, m, whereby the length of the connection previously described is adjusted. I am thus enabled to attach a counter-balance to the slide-valve which, for si mplicity, economy, and durability, is far superior toumany 7o ot' the devices used for accomplishing the same purpose at the present time. In addiA tion to this, the attachment is readily applied to the common slide-valve without any niaterial alteration of said valve, as the lugs b may be screwed or riveted to the top of the valve without departing from the spirit of my invention.

Having thus described my invention,what I claim as new, and desire to secure by Letters 8o Patent, is-

1. The steam-chest, avalve sliding therein, and a chamber above the steam-chest and in communication therewith, in combination with a frame, H. and a diaphragm, D, `mounted on top ofthe chamber, and adjustable link-connection between the diaphragm and valve, whereby the latter may have longitudinal and lateral adjustment, substantially as described.

2. The steanrchcst, a valve sliding therein, 9o a chamber on top ot' the steam-chest,and a diapliragm in the top of the chamber and secured by a cap or plate, in combination with a frame, H, having a packing-box and gland, an adjustable threaded stem or bolt passing through the frame, andthe double-link connection between the said stem and valve, substantially as described.

NVILLIAM IRVIN BETTIS.

IVitnesses:

S. W. SHoLARs, JNO. T. HART.