USRE4043E - of ludlow - Google Patents

Description

I/ZZZVE I 1mm JUN 21 1870 Ill dinitul iltil35 agate-at Gdjiflirr.

ASSIGNEE OI! EDWARD A. ROCK.

Letters Patent No. 74,144, dnlcd February 4, 1868; reissue No. 4,0l3, dated June 2], 1870.

IIIPROVEMBN'I' m GLOBE STEAM-VALVES.

noflehedflorefemdtolnmulnmramtsndmulngputdthesm To all n-lro'an it may concern Be it known that EbwAnnA. ROCK, of Ludlow, in the county of Windsor and State of Vermont, did invent a new and improved "alve; and

we do hereby declare that the following is a full, clear,

and exact description thereof, which will enable others skilled in the art to make and use the same, reference being had to the accompanying drawing forming part of this specification.

The object oi. this invention is .to. form a valve for the stoppage and passage of steam, water, or gas, or other fluids, in such a manner that the constant rise of the satire shall not injure the joint, or cause the naive to leak; and e The invention consists chiefly iu the arrangement of an upright curved spring plate, which constitutes the valve, and which, when forced upon the seat, is expanded, as hereinatter more fully described.

Figure 1 represents a longitudinal section of the valve, taken on the plane of the line a: I, .fig. 2.

Figure 2 is a cross-section of the same, on the line 3 y of fig. 1.

Similar letters of reference indicate corres mn'diug par-ts. I

A represents the shell of the valve.

B is the valve-stem.

O is'the nut through which the valve-stem passes, and by which the valve is operated.

D is a striding-box around the valve-stem.

E is the hand-wheel. I

F is a disk, permanently attached to the end of the valve-stem.

G is the ring-valve, fitted around a shoulder on the disk 1, and held in place by a loose washer, ll, and a screw, J, which enters the stem bya screw-thread, as seen in the drawing.

The drawing represents the valve as closed.

The pipes which convey the liquid or fluid are attached to the shell at L L.

bottom of its seat, as seen in fig. 1. The ring may pass in loosely, and be less in diarn mreprescnts a wedge, which is attached to the shell at one side of the seat, with its point or narrow end up or pointing toward the valve-stem, that is to say, the valve is made of a bent sheet, the ends o( which are not close together, so that it has a spring to yield to outward pressure, and a wedge-shaped piece rcanoved to correspond with the wedge.

It will be seen that the open portion of the ring will be expanded, and that the valve will tightly close the apertures f f, when it reaches a point near the eter than the seat, but at the right point the wedge will expand it so as to form a tight joirrt.

Provision. is made for any wear, either in the ring or wedge, by a space, g, below the ring.

The valve never needs grinding, has a vertical nu tion only, or does not revolve, and it leaves a clear and unobstructed passage for the flow of the liquid.

The wedge may be entirely dlsperrsed'with, it de' sired.

llaving thus described the invention,

'0 clalrrr as new and desire to sccrrrc by Letters, l'atent- 1. An elastic sheet of metal, bent into a circular shape, but having the ends apart to admit of expansiurr, and to form a close-seated valve, as described.

2. The combination of the wedge m, shell A, and

valve G, substantially as herein shown and described.

3. Tire conrbirration of the ring G and wedge m, substantially as herein set forth.

' .I'IDWARD A. BOOK.

JAMES S. GILL.

(IEO. SNOWDEN REDFIELD- Witnesses:

Hruasr M. J cusses, N nnsox M. l'rr-irn'e.

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