US885812A - Pressure-regulator. - Google Patents

Description

110.385,812. -4 PA'RRNTRIiRPRRR,1908.y

- R J. E. WARD.l

RRRss'URR REGULATOR.

APPLICATION FILED DEOQZS, 1907.

W V 'im Inventor:

i" UNITED PATENT OFFICE. JOHNE. WARD, OF NEW-YORK, N. Y.,ASSIGNOR vTOl WARD EQUIPMENT COMPANY, OF NEW YQEK, N. Y., A CORPORATION F NEW YORK.

- PRE SSURE-RE GULATOR.

I No. 885,812.

Appiieatio'n med December 26,1907. Serial No. 4os,i56.

` Specification of Letters Patent.-

Patented April 28, 1908.

To all 'whom it may concern: l i Y the borough of Manhattan, of the city of New York, in the county and State of New York,

have made certain new and useful Improvements in- Pressure-Regulators, `of `which the following is a specification, reference being' had to the accompanying drawing, forming a part hereof.

. The main object of the present invention is to provide a pressure regulator of the type or types embo ying a diaphragm, `in which -the head or member bearing upon the side of the diaphragm opposite the valve, shall be maintained at all times in a central position. It is well known that when these regulators are set up in an inclined or horizontal osition, as is often the case, this member erh has a tendency to drop more orless fromits true position, having, as it` does, a fairly loose working fit with its associated parts. When this member thus getsout of its true osition, even though slightly, theparts ten to stick and the Whole device is a t to work irregularly whereby the desirez? regulating effect cannot be secured. In the present case this difficulty has been overcome by the provision of an extended portion or shankupon the member in question and through'which a working engagement may be hadeither directly or indirectly with-the regulating screwwhich is preferably made hollow for this purpose. In this way the object of the invention can be realized without providing prac` tically any additional parts; and the spring, j

through which in some regulators the centering has been effected heretofore, is left free and clear of the adjacent parts and thusI performs the regulating functions more evenly and regularly. Moreover, the object offthe invention may also be realized by extendin the member or head in question so that it wil touch the casing of the diaphragm chamber on all sides, and by so forming the diaphragm chamber that as the dia hragm moves, the extended portion or portions of the member or head will travel upon thev sides thereof with which there should be a working fit.

In the accompanying drawing, Figure v1 is a view in central section of one,` embodiment of which the improvements are capable, and Fig. 2`is a sectional ,detaillview on Aa smaller scale showing another embodiment.'

eadl

' vThe particular form of valve is of course not essential to the im rovements, and neither arethe yparts direct y associated with .thevalvel ing two plugs a and l) and two cooperating seats c and d res ectively, has been .shown for purposes of illiiistration and explanation, this valve being locatedin a steam pi e so In the Present casea valve havthat the steam enters the valve throug the portion of the steam pipe marked e and eaves through the portion of the steam Vpipe marked f. The valve plugs a and b are secured toa valve stem g the lower end of which issupported for longitudinal move- :u

ment in a seat h and the upper end of which extends through a partition i which sepalrates the diaphragm chamber from the va chamber an which may be formed integral with the valve casing j. The upper end of the stem g is provided with a head or enlarged member 7c which is caused to press vagainst the dia hragm l by a spring m in the lower part of t e regulator, the stem` having a free working fit in the partition t' so as to permit it to move longitudinally under the action of the diaphragm and the s ring m.

U on the other side of the diap ragm is a hea n, which, asshown in Fig. l', is about the same size as the head k and which is caused to press'against the diaphragm, as usual, by av spring o adapted to be placed under tension by means of a regulatin screw p. This member er head n is provi ed, in accordance with the improvements, with a shank g which projects into thedome r of the diaphragm casing and cooperates with the screw p to center the head n, that is to maintain the head n always in its proper position, the re u lating spring o embracing this shank andilyj mg Vbetween the stem and the sides of the dome r whereby it is perfectly vfree to act. Operative connection may be made in diflferent Ways between the shank g and the i screw for the purpose of maintaining the centra position of the head n. v ln the present case a connecting piece is provided which has a flange s and two projections tand a respectively. j The projection t is extended within the screw p which is made hollow or tubular to receive such projections, and the projection u which is made preferably longer than the rejection t, is extended into the shank q w ich is also made tubular and hollow for the same purpose. The flange s is curing a wide range of regulation, it will be' desirable to make the flange g too short to be brought against the washer by the u pward movement of the diaphragm, in which case other means may be provided for limiting the movement of the diaphragm, as will be readily understood.

Referring to Fig. 2, which shows another form of pressure regulator embodying the improvements, it wifi be seen that the head n is extended so as to meet' the sides of the casing ofthe diaphragm chamber which is so formed that as the diaphragm moves the sides of the head n will travel up and down the' walls of the casing with which the head, ofcourse, should have a free working fit. ln this' construction, the top of the easing of the diaphragm chamber is preferably formed so as to cooperate with the head n to limit positively at a certain point the further movement of the diaphragm. This, as will be seen may be conveniently done by forming the chamber with a horizontal portion or portions j with which the projecting portions of the head will come in contact when the diaphragm has reached its limiting position.

In the operation of the regulator, it will be understood that the requisite compression of the spring o is effected through a hand wheel o, the osition of the regulating screw being maintained by a lock-nut w, such oper-.

ation opening the valve and permitting steam to iiow through the valve. i/Vhen the pressure of the steam has reached the point for which the spring 0 was set it will act upon the diaphragm and raise the valve so that both of the valve plugs 'a and l) will seat themselves and revent the further passage of the steam. W en, however, the pressure of the steam upon the discharge side of the valve, that is the steam in the pipe f, has dro ped below that point for which the valve has een set, the diaphragm, which as will be obvious' is always in communication with the pipe f, will again be depressed, thereby moving the valve plugs e and b off from their respective seats and ermitting the further ingress of steam until) the balance has again been produced.

Itwill be understood from the foregoing descri Vtion that the improvements may be embo ied ,in other structures than that shown in the single figure of the drawings or that in other words variations may be made from this structure without avoiding the spirit of the invention.

l claim as my invention 1. ln a pressure regulator, the combination of a valve, a diaphragm in operative ref lation with the valve, a member bearing upon the diaphragm and having an extended portion, a spring embracing the extended portion and pressing said member against the diaphragm, a regulating screw and a connecting piece loosely fitted between said screw and the extended portion of said member to maintain said member in a central position.

2. ln a pressureregulator, the combination of a valve, a diaphragm in operative rclation with the valve, a member having a large head bearing upon the diaphragm and a tubular shank projecting from the head, a spring embracing the shank and pressing the head against the diaphragm, a tubular regulating screw, and a connecting piece extended within both the sh ank and the regulating screw and againstwhich the spring operates.

3. ln a pressure regulator, the combination of a valve, a diaphragm in operative relation with the valve, a member having` a large head bearing upon the diaph `agm and a tubular shank projecting from the head, a spring embracing the shank and pressing the head against the diaphragm, a tubular regulating screw, and a connecting piece having a flange, one end of said connecting piece being inserted within the regulating screw and the flange of the connecting piece being interposed between the regulating screw and the spring.

4. ln a pressure regulator, the combination of a valve, a diaphragm in operative relation with the valve, a member bearing upon the diaphragm having a projecting tubular shank, a spring embracing the sh ank, a tubular regulating screw for the spring, and a connecting piece having a flange, a projection extending within the regulating screw and a projection extending within the shank.

5. ln a pressure regulator, the combination of a valve, a diaphragm in operative rclation with the valve, a member bearing upon the diaphragm and having an extended portion, a regulating screw cooperating with the extended portion of said member to center said member, a spring bearing directly upon said member, embracing said extended portion and adapted to be placed under tension by said screw to press said member against the diaphragm and positive means to limit the movement of the diaphragm.

6. ln a pressure regulator, the combination of a valve, a. diaphragm in operative relation with the valve, a member beariu g upon the diaphragm and having a tubular extended portion, a spring embracing the extended portion, a tubular regulating screw for the spring and a connecting piece having a flange, said flangle being intel1 osedbetween l This s eelcation signed and witnessed v the screw and t e springen also between this 7th ay of December, A. D., 1907.

WJthe screw and the extended orton whereby the spring may be place under tension- JGHN E WARD 5 through the medium of the langeand Wheie- Signed in the presence ofby'the flange serves to check positively the `VV'ILLIAM S. DENISON,

movement of thediaphragm. f HENRY J. HORN.

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