US939823A - Valve. - Google Patents

Description

J. L. FITTS.

VALVE.

, ARPLIUATION FILED JULY 10.1909. r 939,323, Patented N0v. 9,1909.

I a H :l 1' 14 III UN STATEfdFATENT QFFICE.

JAMES LQGAII FITTS, 0F MERCHANTVILLE NEVJ JERSEY, ASSIGNOR T0 STER & CGMPA'NY. A GQRPORATJON OF "WARREN WEB- NEVV JERSEY.

VALVE.

Application filed July 10, 1909. Serial No. 506,882.

To all whom it may concern:

Be 1t known that I, JAMES Lesa-v Frrrs, a

citizen of the United States, and a resident of Merchantville, Pensauken township, and State of New Jersey, have invented an Improvement in Valves, of which the followingis a specification.

My invention has reference to valves and consists of certain improvements which are fully set forth in the following specification and shown in the accompanying drawings which form a part thereof.

The object of my invention is to provide a simple construction of valve especially adapted as av modulation valve for use in steam heating systems and more especially for controlling the supply of steam to the radiator thereof, whereby predetermined amounts of steam may be admitted to the radiator to suit the particular heating 'requirements thereof.

My object is to provide an inexpensive construction of the working parts which will maintain their operative conditions, be cheaply made, and easily repaired.

My invention consists of certain details of construction constituting the operative strucscribed hereinafter and ture of the valve and which are fully demore particularly defined in the claims. These improvements will be better understood by reference tothe drawings in which:

Figure 1 is a plan view of a valve embodying my'invention; Fig. 2 is a vertical sectional view of the same; Fig. 3 is a transverse sectional view through the body of the valve; Fig. 4 is a sectional elevation of the valve piece removed; Fig. 5 is a plan view of the same; and Fig. 6 is a cross section of the valve piece on line ar:cc of Fig. .4.

2, is a valve body and has an inlet 4 and an outlet 3. The valve body furthermore is provided with a conical valve seat 5 arranged within it and having its largest end opening downward into the inlet'port 4.

The outlet 3 communicates with the interior of the valve seat 5 by a port 8. The body is also provided with transverse walls 7 which shut-off a communication between the outlet 3, and the interior chamber 6 of the valve body, except .by way of the port 8 in the valve seat. p

10 is a conical valve plug and has a taper with the smallest diameter next to the stem Specification of Letters Patent.

Patented Nov. 9, 1909.

11. The conical valve piece 10 seats upon the conical valve seat 5 and the stem 11 extends upward through the upper part of the valve body. A steam tight joint is made around the valve stem by a stuffing box-(l2 containing packing under compression by means of a bushing 13. V

The alve piece 10 is held upward in its seat by means of an adjustable bushing 18 which is screwed into the body below the valve seat, as indicated at 9. "lhis bushing 18 is preferably a split spring ring and is of larger diameter than the largest end of the valve piece and is of smaller diameter than the inlet port l. By adjusting the bushing 18, the valve piece is held as tightly in the valve seat as is necessary to secure a tight joint.

The top of the valve stem 11 is made square to receive a handle plate ll having a crank handle 15 and a'pointer 16. plate 14. is made inverted cup shaped so as to extend over and hide the stufiing b0- structure through which the shaft 11 eaz tends. This platelet is made circular as shown in Fig. 1 and is of less diameter than the circular indicator plate or fiange 19 arranged immediately below the same and formed integral with the body 2.01 the valve. This indicator plate 19 contains two limit stops 1?, one adjacent to the word Open and the other adjacent to the word Shut and also contains numbers indicating different portions of opening. When the handle is rotated so thatthe pointer 16 rests against the stop 17 adjacent to the word Shut the valve will be completely closed and when turned so that the pointer 16 rests against the stop 17 adjacent to the word Open then the valve is fully open.' lVhen the pointer assumes intermediate positions, corresponding to the numero'us places indicated upon the indicator flange 19, the valvewill be opened to different egrees.

The structure of the valve is such that with less than one revolution ofthe handle and valve piece the valve will pass from the *closed condition to the full open condition and all intermediate conditions, so that the operator may know in a moment theextent of the opening. The valve piece 10 has its face provided with a plurality of openings arranged jabout its The and 6, These openings vary'in area and the diameter of the .opening 20 is approximately twicethe diameter ofv the opening 21, the

diameter of the opening 21 is approximately .twice the diameter of the opening 22, and

,suchas to widthlthat as one of the ports is being shut ofi, the next; adjacent port is being opened, so that at times two of these ports to 23 are partly opened through the port 8. Thisstructureis such, that there is a gradual increasing steam passage area fromthe smallest opening to the-largest and hence, the possibility of gradual adjustment in the steam supply. However, in the normal operation of the valve, the positions of the valve when ordinarily adjusted and left would be to bring one of the ports 20 to 23 in line with the opening 8.

The angle of the taper of the plug valve 10 is such that it will not jam fast, even at considerably high pressure. The split ring or bushing 18 holds the valve piece from dropping downward and becoming lost when the handle plate is removed and repacking the stufiing box about the stem is being done. By making the bushing 18 in the form of a I split ring it will firmly hold itself in its adjusted position.

It will also be observed that in particular valve structure shown, the chamber 6 is practically sealed both to the inlet and outlet ports and consequently, there is no pressure within this chamber to produce leakage through'the packed joint and therefore, only a smaller amount of packing would be necessary and the packing would, moreover,-have an increased life over what would be the case if the steam had free access to the stuffin box.

hile the construction shown is in the form which I have found excellently adapted to the commercial use of my invention, the details thereof may be modified withoutdeparting from the spirit of the invention. Having now described my invention what I claim as new and desire to secure by Letters Patent is sald plug valve piece also having a stem extending through the valve body, a stufiing box around the valve stem, a handle to operate the conical plug valve piece, and a r ng ical valve seat within the body having its larger end in communication with the inlet port and its side in communication with the outlet port, with a conical plug valve piece fitting the valve seat and having a: plurality of ports of relatively different sized open ings through the conical face of thev valve plug and at intervals about its circumference and a port through its larger end and said plug valve piece also having a stem extendmg through the valve body, a stufiing box around the valve stem, a, handle to operate the conical plug valve piece, a ring shaped bushing'screwed into the body part below the valve piece for holding it in its valve seat with the proper degree of pressure,-and means to indicate from ,the outside of the valve the position of theseveralports. ofthe plug valve piece with respect to theport through the valve seat. 1 j

3. In a valve, the combination'cf the body part having inlet and outlet ports anda con ical valve seat within the body having its larger end in communication with the inlet piece of larger diameter than the bottom of the valve seat and of smaller diameter than the inlet port and formingan annular abutment for holding it in its; valve seat with the proper degree of pressure. v,

4:. In a valve the combiation of thebody part having inlet and out-let ports and a'conical valve seat within the body having its larger end in connnunication with the inlet port and its side in communication with the outlet port and also having walls forfornn in a closed compartment adjacent- Ito the smaller end of the valve seat, with-,a conical plug valve piece fitting the valve seatfand having a port opening through theside aiid larger end and said plug -valvelpieec also having a stem extending through the'valve body, said valve stem passing; througlrthe closed chamber to the outside oftliesvalve the conical seat but having no direct communication with the inlet and outlet ports, combined with a plug valve fitting the valve seat and provided with a port extending through its side and larger endand a valve stem extending through the closed chamber and valve body to the outside thereof, and a stuffing box carried by the valve body and forming a steam tight packing about the valve stem.

t' In a valve, a body having inlet and out-- let ports and an annular valve seat between them, the large end of the seat opening toward one of the ports and the wall of the seat. opening into another of the ports by a passageway and also having a closed chamher in communication with the small end of the conical seat but having no direct com-c munication with the inlet and outlet ports, (@nbined with a plug valve fitting the valve seat and provided with a port extending through its side and larger end and a valve stem extending" through the closed chamber and valve body to the outside thereof, a stuffing box carried by the valve body and forming a steam tight packing about the valve stem, and a handle operating device for i=0- tat'ing the valve stem and its plug valve having means for shielding the stufiing box.

7. In a valve, a body having inlet and outlet ports and an annular valve seat between them, the large end of the seat opening toward one of the ports and the wall of the seat opening into another of the ports by. a passageway and also having a closed chamber in communication with the small end of the conical seat but having no direct communication with. the inlet and outlet ports, combined with a plug-valve fitting the valve seat and having a plurality of ports of different areas communicating in a common passage through the large endof the plug valve and opening through the conical surface thereof in relatively diiferent position about its circumference and a valve stem extending through the closed chamber and valve body to the outside thereof, a stutiing box carried by the valve body and forming a steam tight packing about the valve stem, and means for limiting the rotation of the valve stem within one revoluto the tion and indicating the osition of the several ports of the valve p ug with respect passageway through the side of the valve seat. 1

8. In -a valve, body having inlet and outlet ports and an'annular valve seat between them, the large end of the seat openin toward one of the ports and the wall 0 the seat opening into another of the ports by a passageway and also having a closed chamher in communication with the small end of the conicalhseat but having no direct com-' munication with the inlet and outlet ports,

combined with a plug valve fitting the valve.

seat and provided with a port extending through its side and larger end and a valve stem extending through the closed chamber and valve body to the outside thereof, a stuffing box carried by the valve body and forming a steam tight packing about the valve stem, a handle operating device for rotating the valve stem and its plug having means for shielding the stuffing box, and a ring bushing adj ustably secured in the valve body below the large end of the plug valve for holding it in position within its'seat.

9. Ina valve, a body having inlet and outlet pdrts and an annular valve seat between them, the large end of the seat opening toward one of the ports and ,the wall of the seat opening into another of the ports by a passageway and also having aclosed chamber in communicatlon with the small end of the conical seat but having no direct";

communication with the inlet and outlet ports, combined with a (plug valve fitting the;

.wlth a port extending through its side and larger end and a valve seat and provide valve stem extending chamber and valve body of, a stuffing through the closed to the outside therebox carried by the valve body and forming a steam tight packing about the valve stem, a handle operating device for rotating the valve stem and 1ts plug valve having means for shielding the stuffing box,

and a ring bushing adj ustably'secured in the valve body below the large end of the plug valve for holding it in position within its seat consisting of a split ring having the upper surface in annular form to work against the valve plug and the lower part screw-threaded to form an adjustable connection with the valve body below the large end of the conical seat.

In testimony of which inventioml hereunto set my hand.

JAMES LOGAN FITTS.

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