US725378A - Valve. - Google Patents

Description

J PATENTED APR. 14,- 1903. U. B. TETLEY & N. PETERSE VALVE.

APPLICATION FILED JULY 18, 1902.

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By umfltt-orn e UNITED STATES PATENT FFICE.

CHARLES E. TETLEY AND NIELS PETERSEN, OF PHILADELPHIA, PENNSYLVANIA.

VALVE.

SPECIFICATION formingpart of Letters Patent No. 725,378, dated April 14, 1903. Application filed July 18,1902. Serial No. 116.101. (No model.)

To all whom it flea/y concern.-

Be it known that we, CHARLES E. TETLEY and NIELS PETERSEN, citizens of the United States, residing at Philadelphia, county of Philadelphia, and State of Pen nsylvania,have invented a certain new and useful Improvement in Valves, of which the following is'a specification. V 7

Our invention relates to a new and useful improvement in valves, and relates more particularly to that class .of valves known as globe-valves, and has for its object to so construct a valve that the usual packing and gland around the valve-stem are done away with and the packing surrounds the valveplug, which plug workswithin a removable cylinder; and a further object of our inven- .stand how to make and use the same, the construction and operation will now be described in detail, referring to the accompanying drawings, forming a part of thisspecification, in

which I i 1 Figure 1 is a vertical longitudinal section of the valve with the bonnet removed and raised, the valve being in the position when closed; Fig. 2, a vertical cross-section of the valve, the-plug being in itsraised position, the valve being open; Fig. 3, a plan view of the valve; Fig. 4, a vertical longitudinal section of the valve cylinder and bonnet, the valve stem and plug being shown in elevation; Fig. 5, a plan view of the packing-ring; Fig. 6, a side elevation of the packing-ring.

A represents the body of an ordinary globevalve, which is provided with the usual partition B, separating the inlet from the outlet, and this partition is provided with the usual port 0, located directly underneath the valveplug, and surrounding this port is a beveled valve-plug seatD.

E .is a valve-'plug'cylinder, which is externally threaded at each end, and between the two ends is provided an annular projecting polygonal flange E,which fi'i rnishes a wrenchhold, and the lower end of the cylinder is threaded into the body of the Valve.

F is a valve-plug which consists of two parts G and H. The part G is internally threaded and thepartH is externally threaded and they are adapted to be brought together, as shown in Figs. 1 and 2. Both parts G and H are cut away around their periphery, as indicated at I, so that when the two parts are assembled an annular groove orchannel will be formed; butbefore the parts are assembled a packing-ring J is slippedo'verthe part G, and then as the part H is threaded into the part G the packing-ring J will be bound between the two parts, and the nearer together the parts are brought the tighter the packingring J will becompressedand cause it to expand against the walls of the cylinder E, Thus the packing can 'be always tightened by screwing the part-H farther into the part- G. The'part is recessed from the lower end, as indicated at K, and through the part H, above the recess, is threaded a'set-screw L, which extends entirelythrough the part H and is adapted to bear-against the under side of the part G.'- Thus when the two parts G and H are properly adjusted, so as to give the desired expansion 'to the packing-ring,

the two parts are locked in place by screwing the screwL tightly against the part G, thus locking the two parts against turning, the

slotted head of the screw L lying within the recess K of the partH. The lower rim of the ,part H, surrounding the recess K, is beveled and ground to fit the seat D of the valve.

M is avalve-stem which is formed integral with or secured to the part G of the valveplug and extends upward therefrom and is exteriorly threaded, as indicated at M.

Nis a bonnet, the lower end of which is adapted to be threaded over the upper end of the cylinder E. The boss N upon the upper end of the bonnet is interiorly threaded to receive the threads M of the valve-stem M. Thus when the bonnet is secured in place the valve-plug F is raised or lowered by the revolving of the valve-plug and valve stem in the well-known manner.

0 is a handle for revolving the valve-stem located upon the upper end thereof.

P is a beveled annular seat formed upon the interior of the bonnet N, and the part G has formed upon its upper face the annular beveled portion Q, beveled and ground to fit upon the seat P. When the valve is open, the valve-plug is raised until the beveled portion Q seats upon the seat P of the bonnet. Thus leakage is not only prevented by the packing J, but also by means of the valve-plug seating against the seat P.

The advantage of our invention is that we do away entirely with the necessary small packing ring and gland surrounding thevalvestem and substitute in place thereof a comparatively large packing-ring which need not be divided, but is made continuous, and may be easily tightened at any time by removing the cylinder E from the valve, loosening the screw L, screwing the part II farther into the part G, and then again tightening the screw L to lock the two parts together. WVe are thus enabled to provide a more effective packing, and at the same time providing an upper seat against which the valve-plug seats when the valve is open we form a double protection against leakage around the valve-stem. A further advantage is that our improvement may be applied to the body of any ordinary globe-valve by removing the ordinary bonnet from the globe-valve and inserting in place thereof the cylinder E. Our invention consists entirelyin the parts shown in themselves in Fig. 4:-

Another advantage of our improvement is that by raising the bonnet N, as shown in Fig. 1, the valve-plug may be turned around upon the seat D without raising the valveplng, and thus the valve-seat may be reground at any time desired.

Of course we do not wish to be limited to the exact construction here shown, as slight modifications could be made without departing from the spirit of our invention.

Having thus fully described our invention, what we claim as new and useful is- 1. In avalve, a valve-plug cylinder, a valveplug adapted to said cylinder, said valve-plug consisting of two parts threaded together, annular cut-away portions formed around the periphery of each of the parts, a packingring adapted to surround the parts and be compressed between the same, means for locking the two parts against rotation relative to one another, a valve-stem secured to one of the parts of the valve-plug, a bonnet secured upon the outer end of the valve-plug cylinder, said valve-stem being exteriorly threaded and threaded through the bonnet, as and for the purpose specified.

2. In a valve, a valve-body, a partition separating the inlet from the outlet within the body, a port formed through the partition, a valve-plug seat surrounding said port, a valve-plug cylinder, the lower end of which is threaded into the body directly above the valve-seat and concentric therewith, a valveplug arranged within said cylinder and adapted to reciprocate therein, said valveplug consisting of two parts threaded together, the lower part being ground to fit the valve-seat, each of the parts of the valveplug cut away around their periphery so as to form an annular groove or channel when the parts are assembled, a continuous packingring fitted in said groove or channel and adapted to be compressed against the wall of the cylinder when the two parts are forced together, a screw threaded through one of the parts and bearing against the other for the purpose of locking the two parts against rotation relative to one another, a bonnet threaded over the outer end of the valveplug cylinder, a valve-stem secured to the outer part of the valve-plug and threaded through the bonnet, an annular seat formed upon the interior of the bonnet, the outer part of the valve-plug provided with a surface ground to fit said seat, as and for the purpose specified.

In testimony whereof We have hereunto affixed our signatures in the presence of two subscribing witnesses.

CHARLES E. TETLEY. NIELS PETERSEN. WVitnesses:

H. B. HALLOCK, L. W. MORRISON.

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