US319939A - Valve - Google Patents

Description

5 SheetsSheet 1. F. TUDOR.

(No Model.)

VALVE.

No. 319,939. Patented June 9,. 1885.

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u. PETERS. Pholn-Liihngnpher. WuhIr-glam o. c.

(No Model.) 5 Sheets-Sheet 3.. F. TUDOR.

VALVE.

z$aiasiai W (-No Model.) 5 Sheets-Sheet 4. F. TUDOR.

. VALVE.

- No. 319,939. Patented'June 9, 1885.

(No Model.) 5Sheets8heet 5.

I P. TUDOR.

VALVE.

No. 319,939. Patented June 9, 1885 N. PETERS. Phob-Lhhngrlphor. Wuhingwn. C.

UNITE FREDERIG TUDOR, OF BOSTON, MASSACHUSETTS.

VALVE.

GI GIPICATEON forming part of Letters Patent N0. 319,939, dated June 9, 1885.

Application filed March 1, 1884. (No niodeld T 0 all whom it may concern.-

Be it known that l, FREDERIO TUDOR, of Boston, in the county of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Valves, of which the following is a specification.

The invention relates to regulatable valves or cooks for regulating the feed of fluids from the source of supply to the points where they are used or consumed.

My invention applies more especially to steam-supply valves for connection with radiators or heating apparatuses, and it aims to provide valves for this purpose which will possess the following advantages: First, an adjustability of the internal supply orifice or way, adapted to the condensing capacity of the radiator to which the valve connects, whereby only a determined quantity of steam can pass at a certain pressure, so that when the valve is opened to its maximum only the true maximum quantity. of steam can enter the radiator without any appreciable excess; second. a means for graduating the flow of steam by regulating the distance which the operating handle can be moved, so as to reduce the flow to any desired degree between maximum and minimum, and thereby enable the heat in the radiator to be regulated as desired; third, means whereby steam may be admitted to the radiators, even after the manual regulatable valves have been closed,by simply increasing the steanrpressure, and thereby forcing a circulation of steam through the heating apparatus to keep the apartments from becoming too cool during the times when the occupants are absent therefrom.

The latter object is accomplished by means shown and described in a former patent issued to me January 8, 1884, No. 291,818, on which my present invention is partly an improvement, and the other features of my presentinvention are in part supplemental to the improvements shown in my application No. 117,923, filed January 18, 1884.

In carrying out my invention, therefore, I render the internal supply-orifice or steam way of the valve adjustable in area, preferably by means of an adjustable perforated sleeve controlling the way, with means for fastening said sleeve at the desired adjustment, and in combination with this featurel employ a valve disk or stopper, which is arranged to have a limited movement between stops which represent the zero and the maximum of opening, and I graduate the range between said points, whereby any desired flowma-y be obtained from minimum to true maximum. In connection with the aforesaid features I employ an auxiliary yielding valve or stopper in connection with the main or manually-controlled valve or stopper arranged to yield to increased pressure, and thus permit the flow of steam, even after the main valve has been manually closed.

My present invention therefore consists in the features above outlined, as well as in certain minor features of construction, as hereinafter fully set forth.

In the drawings annexed, Figure 1 presents a central vertical section. of a valve embodying my invention, and Fig. 2 is a plan view thereof. Fig. 3 shows, respectively, an elevation and inverted plan of the adjustable sleeve which controls the internal way of the valve. Fig. 4 is a vertical section similar to Fig. 1, showing a slightly-modified construction,omitting the yielding or relief valve; and Fig. 5 is a plan view thereof, and Fig. 6gives views of the adjustable sleeve thereof. Fig. 7

gives a vertical section of another form of valve,

embodying the auxiliary or yielding stopper. Fig. 8 is a plan view of the same, and Fig. 9 a cross-section on line A B of Fig. 7. Fig. 10 gives an elevation and crosssection of the main stopper of the valve removed, and Fig. 11 similar views of the tubular seat or throat in which the stopper moves. Fig. 12 gives a half-elevation and half-section of a valve on the same principle as that in Figs. 1 and 4, but of simpler structure, omitting the yielding valve; and Fig. 13 is a plan of this valve. Figs. 14 and 15 give, respectively, a vertical sectional elevation and plan ofa still simpler form of valve on the same principle, dispensing with the adjustable sleeve and yielding stopper.

Referring to Fig. 1, a indicates the body or casing of the valve, having the inlet-orifice b and the outlet-orifice c, to which the pipes connect in the usual manner, as shown. These orifices are shown as at right angles to each other, the valve being thus what is known as an angle-valve, but it will be readily understood that the orifices may be in line with or parallel to each other, projecting from opposite sides of the casing, when desired, as in what is known as globe-valves.

\Vithin the casing a, around t-heinlet-orifice, a short neck or rim, (1, rises, the top edge of which is ground true and preferably flat, and

forms the valve-seat for the valve-disk or stopper 0, whose face is ground to fit steam-tightthereon, as shown.

fff indicate the removable top or cap of the valve-casing, having a broad-shouldered rim, f, atthe middle, with an underlying threaded neck which screws into the top of the casing a, thus bringing the shoulder of the rim down steam-tight on the top edge of the casing, as shown in Fig. 1. The rim f is preferably of circular form and overhangs the body of the valve, as shown in Figs. 1 and 2, and its upper surface forms a dial or index plate, as shown in Fig. 2, and hereinafter de scribed, while above the said rim the cap is formed with the usual guiding neck and gland,

2 f, through which the valve-stem projects full or maximum flow of steam allowed.

steam-tight, while below the rim the cap is formed with the threaded sleeve or neck f which projects down into the cavity of the easing in line .with the seat-rim d.

Now, the valve-disk or stopper is made in two parts, 0 e, screwed together as shown, the upper part, 6, being in the form of a shouldercd thimble,which screusonto the disk 6, leaving a space or play between the two. The valve-stem is also made in two parts, 9 y, the upper part, 9, being solid and projecting through the neck and gland of the cap, while the lower part, g, is tubular and screws at the top onto a threaded tenon on the lower end of the part 9, while the lower end of the tube 9 fits into the thimble e, and has a shoulder to engage with the shoulder of the thimble, and is thus capable of a slight play between the thimble and the top of the disk 6. Now, the solid part 9 of the stem is threaded near the base, and screws into a threaded part of the neck f, so that if the stem be rotated in one way or the other it will be screwed up or down, and the valve-disk 6 thus raised from or lowered to its seat. The projecting end of the stem is therefore provided with an operating lever,arm,or crank, h, having at the manipulating end the upwardly-projecting crank-knobh and the downwardly-projecting index point or finger h, which approaches the surface of the dial-rim f, and thus sweeps over its circumference when the arm is revolved to turn the valve-stem, as will be understood. In the path of the finger h however, astop or projection, j, rises from the rim f, which stop forms a limit to the movement of the finger and the rotation of the operating arm and stem, and this stop represents the limit of opening of the valve, for when the finger h contacts with said stop the valve-disk will be raised from its seat to its full extent and the as seen in Fig. 2, the disk 9 will be brought to its seat. as seen in Fig. 1, and-the flow entirely shut off, so that the point marked closed on the dial-rim f is the zero of the scale through which the arm is movable, the stop J forming the maximum limit,whiie the space between is graduated, as shown, into divisions of 3-, 5, 2', 850., as may be desired, so that when the arm is revolved to any of the graduations a correspondingly reduced or increased flow of steam will be obtained.

It may now be noted that when the disk 6 is brought to its seat, as in Fig. 1, there yet exists a play between the top of the disk and the shoulder of the stem g, and hence the steanrpressure under the disk would consequently tend to lift it and allow the steam to escape. This, however, is prevented by a spring, is, arranged within the tubular stem 9. pressing at its lower end on the disk and abutting at its upper end against an adjustable screw-plug, is, so as to tend to constantly keep the disk down with a force sufficientto amply overcome the normal steam-pressure, which force can be adjusted by screwing the plug k u p or down, as will be understood; hence when the disk is forced to its seat by manually revolving the operating arm of the valve to the position of closed, no steam can pass the valve while at its normal pressure. If, however, the engineer desires to force a circulation of steam through the valves at night, or during Sundays or holidays, when the tenants are absent, he simply will allow the steampressure to rise in the boiler beyond the normal point, and this increased pressure will then lift the springdepressed disks 6, and thus permit a flow of steam to pass into the radiators; and when the pressure is again allowed to fall to or below the normal the valves will automatically seat in their closed positions, as before. By this means the engineer is enabled to force suflicient steam through the heating apparatus to prevent the temperature from falling .too low throughout the building and without the trouble of going to the valves to open them, and notwithstanding the fact that they had been left closed to the normal pressure. If, however, the occupant of any apartment does not desire to have the steam thus turned on, as above described,during his absence, he may readily lock the valve against the possibility of such opening, to do which it is only neces sary to rotate the operating-handle one-half revolution further in its direction of closure, or from the mark Closed in Fig. 2 to or near to the back side of the stop j, marked Locked,when this movement will screw the shouldered end of the stem 9 down tightly onto thedisk 6, (against the stress of the spring 1a,) thus positively preventing the rise of the disk 6, even though the steam-pressure be indefinitely increased.

It may now be seen that the construction described provides a 'valve which, after it has been closed by the tenant, will still yield to the will of the engineer through an increased pressure of steam,and enable him to open the valves and permit a flow of steam under certain necessary circumstances, and which, on the other hand, can be locked by the tenant against so yielding, when desired, which features are shown in my former patent.

In addition to these points the valve or stopper also has a graduated range of movement,with a definite stop for the maximum of opening,whereby the valve may be set to allow different graduated flows of steam, according to the quantity of heat required. This last provision, however, would be ineffective without some means of graduating or adjusting the area of the actual internal way or passage of the valve itself and proportioning it properly to the area or capacity of the radiator or other chamber to which the valve delivers its steam, so that when the stopper was fully opened, with the handles set to the maximum point or stop,no more steam could pass than could be properly condensed in the radiator without leaving any appreciable pressure from excess therein, this being one ofthe prime objects of my present improvement, according to the principle set forth in my pending application before referred to. Now, this adjustment of the area of the internal way may be accomplished in various obviousways; but in the present instance,

' referring to Fig. 1, I prefer to effect it by means of the adjustable sleeve m, which occupies the cavity of the casing between the valvescat and inlet-orifice, and thus controls the way of the valve. The lower end of this sleeve fits around the seat-rim (l, the meeting surfaces of which are turned to a nice fit, while the upper end of the sleeve screws onto the threaded neck f of the casing-cap, as fully shown in Fig. 1. This sleeve is shown removed in Fig. 3, from which, in connection with Fig. 1. it will be seen that its lower end is perforated or notched, preferably with V- shaped notches, and this notched edge fits around the seat-rim d, so that, hence, if the sleeve be rotated in one way or the other it will be screwed up or down on the neck f and the notched lower edge thus raised more or less above the seat edge of the rim (2, therebyaffording a passage for the steam of greater or less area, according to the extent to which the notches are adjusted above the edge of the valve-seat (Z, and thereby adjusting the area of the internal way of the valve in a simple and effective manner.

In order to facilitate the rotation and ad j ustment of the sleeve m, it is formed with circumferential corrugations or teeth, as seen in Fig. 3, and its adjustment within the valvecasing is readily effected by removing the screw-plug a on the side of the casing and inserting a tool,whereby the toothed circumfermice of the sleeve may be engaged and turned to the desired extent, and when the screwplug a is replaced its extremity will bear upon the sleeve, as shown in Fig. 1, and thus fasten it at the desired adjustment.

Hence by this simple means it will be seen that the way of the valve may be so adjusted to the condensing capacity or heating-surface of the radiator that, with steam at a certain pressure and the weather at a certain aver age condition, only such a quantity of steam can pass at the maximum-that is, when the val ve-stopper is fully openedas can be fully condensed in the radiator without leaving any appreciable pressure or excess therein which would interfere with easy regulation and the circulation in the heating system; hence when the valve-stopper is fully opened, withthe handle turned around to the stopj' the full heating effect will be obtained, and when it is turned away from the stop toward the zero of the scale the flow will be more and more reduced, and the heat given out in the radiator correspondingly regulated or graduated, according to the indicated position of the valve on the dialf', thereby accomplishing a mostdesirable result in steam-heating.

The valve shown in Figs. 4 and 5 is slightly different in structure from Fig. 1that is, in this modification the yielding valve or stopper is omitted, and the valve-stem g is in one solid piece with the valve-disk c and solid on the end thereof. The gland-neck f is also separate from the dial-riinfgand has a ground shoulder on the lower end to seat on the ground upper edge of the casing a; as shown in Fig. 1, and also carries the threaded neck f onto which the adjustable sleeve m is screwed. This sleeve is formed with key-like cars m on each side, which fit in grooves in. the sides of the casing a, as shown fully in Fig. 6, thus preventing the sleeve from turning, but permitting it to be adjusted vertically up or down. The dial-rim f serves as a capnnt over the casing and the gland-neck, and screws down onto the casing, as shown, with a shoulder which bears on the shoulder of the gland-neck f, so as to hold said neck firmly in place and prevent leakage at the joint between the same and the casing. It will therefore be now readily seen that the sleeve in in this case may be readily adjusted by first turning the rim f slightly, so as toreleasethe gland-neck, and then by seizing and turning the gland-neck the sleeve on may be screwed up or down to the desired extent, and thus adjusted with the effect before described, after which the rim f may be again screwed down tight, and will hold the parts at the desired adjustment.

As the yielding valve and themcans for locking the same are in this instance omitted, the operating-arm of the valve moves between two stops,jj, onthe dial-rim, as shown in Fig. 5, which stops respectively represent the positions of fully opened and fully closed, as will be readily understood.

The valve shown in Fig. 7 embodies the same principle already set forth, but differs more in structure from Fig. 1 than does the former modification. In this form the casing a is open at top and bottom, and the dial-rim f is formed solid on the top thereof, while the gland-neckfscrews into the top in the manner of ordinary valves. The seat-rim d is in the form of a perforated nozzle, and screws into the lower end of the casing and projects up within the same, as shown, and within this nozzle is fitted the valve-stopper c, which is in the form of a perforated sleeve having perforations matching those of the seat-nozzle d,

, these parts being shown detached in elevation and section in Figs. 10 and 11. The valvestem 9 is free to turn 'in the glandf, but prevented fromvertical motion bya pin, 9 which engages a groove in the stem, and on the lower end of the stem is formed a steeply-threaded screw-hub, 9 which engages witha nut-like sleeve, 0, which is attached to the stopper 6. The nut-like sleeve 0 has keys or wings 0, which are engaged in grooves on a surrounding rotary or adjustable ring, 1), which is sock eted in the top of the casing a, and free to revolve therein, being held, however, by the serew-plng n, as shown well in Figs. 7 and 9, in the same manner as the adjustable sleeve in in the former cases.

N ow, the seat-nozzle d has two perforations, 3 3, at opposite sides, preferably about onequarter of an inch square, and the stopper 0 has similar perforations, 4. 4, and it will therefore be seen that when the stopper is moved so that the perforations thereof are coincident with the perforations of the nozzle the flow of steam will be allowed, and when they are moved entirely out of coincidence the flow will be shut off; hence the opening and closing movements of the valve are effected by rotating the handle as before, which will, however, through the engagement of the rotary screw with the non-rotary nut 0, raise or depress the perforated stopper 0 in the perforated nozzle cl. and thus bring the perforations into or out of register with each other by a straight, vertical, or longitudinal movement, as will be readily comprehended. Now, the adjustment of-the effective area of the way of the valve is accomplished by a rotary movement of the nut and stopper 0 6, so as to bring the perforations of the nozzle and stopper more or less out of register with each other in a circumferential direction, and thus reduce the effective area of the perforations in the nozzle, and conse quently the flow of steam which can take place through the same. This adjustment is effected by removing the screw-plug n and rotating the ring 1), which will rotate the nut 0 and stopper 0, and thus effect the desired adjustment, as will be readily seen, after which the plug is replaced to retain the parts at the desired adjustment. To facilitate the turning of the ring 1), a number of holes may be made around it, as shown in dotted lines in 3 Fig. 9.

Now, this form of my invention also embodies the yielding valve or stopper, as does Fig. 1, but in a somewhat different formthat is, the yielding valve 9 in this case rests on a seat in the upper part of the tubular stopper 6 and constantly tends to remain on its seat by the spring k, which encircles the stern of the valve with one end bearing on a crossbar or bridge across the stopper, and the other end resting on an adjustable nut on the end of the stem. The stopper e is perforated with, say, four slots, 0, just above the seat of the valve q, and in the top of the nozzle d are coincident slots, 0', as shown in section and elevation in Figs. 10and 11. The slots 0' in the nozzle, it will be seen, are much wider circumferentiallythan those in the stopper, to allow for the circumferential adjustment of the stopper'in the nozzle, as before described, so that the perforations r in the stopper will always remain open to their full extent, notwithstanding the rotary adjustment of the stopper to adjust the main way of the valve through the main perforations 3 3. Now, by referring to Fig. 7, it will be understood that when the stopper 6 is fully depressed to openthe main way the small perforations r and r will become shut by the solid part of the stopper e and the nozzle d covering the respective perforations; but when the stopper is raised to shut the main way 3 3, as shown in Fig. 7, then the perforations will be opened by coincidence with each other; hence if the steam-pressure be now raised beyond the normal point, the yielding valve q will lift against the stress of the spring k and allow the steam to escape through the perfo' rations r r, and thus flow to the radiators, thereby accomplishing the same purpose described in connection with Fig. 1.

In this modification I show the operatinghandle of thevalve as in the form of a bent lever with a short index-finger, If, and an operating-knob, h, projecting radially. It will also be seen, by referring to Fig. 8, that the handle has a similar movement to that described in Fig. 1 for opening and closing the valve and looking it against the yielding flow above describedthat is, when the handle is moved around to the open side of the stop j the valve will be opened to its maximum, and when moved around to the position Closed, the main valve or way will be entirely closed, but the auxiliary perforations r T will be brought into coincidence, as in Fig. 7, and therefore in a position to allow a flow of steam in case the pressure is increased to lift the yielding valve g. If, however, the handle be moved beyond the point Closed up to the opposite side of the stop j, marked Locked, thenthe perforations 1- will be raised up above the perforations r, and this flow prevented, even though the steam-pressure be increased, thus locking the valve, as before described.

In the form of valve in which the yielding stopper is omittedsuch as shown in Fig. 4-

I find the stuffing box or gland around the stem 1s actually unnecessary, andfmay be omitted, for it will be seen that since the main feature of this valve causes the flow of steam to be so graduated to the radiators as to sup ply it with only what it will condense and no more, hence there will be no appreciable pressure of steam within the casing of the valve above the seat, and therefore no tendency to cause leakage around the stem, except of course, in cases where the valve may be placed in a recumbent or inverted position, in which case condensation might trickle out; but when placed in an erect position, as shown, noleak age will occur, thus enabling stuffing-boxes to be dispensed with, and therefore greatly conducing to simplicity in the construction and operation of the valves. In Figs. 12 and 13 I have therefore shown the formin which I prefer to make the valve when the yielding stopper is omitted and the stuffing-box dispensed with. In this case the adjustable sleeve on also forms the guiding or gland neck of the valve-stem, and projects up out of the casing around the stem, but without any stuffing-box. The exterior of this sleeve is, however, provided with a fine screw-thread, as illustrated, which screws into the neck of the casing a, and the stem 9 is also provided with a similar fine screw-thread which screws into the interior of the sleeve, all the said threads be ing ot'fexactly the same pitchpreferably thirty-two to the inch. The lower edge of the sleeve m is of course notched, as before described, and fits around the seat-rim din the same manner as in Figs. 1 and 4. On the projecting end of the sleeve is screwed a jamnut, s, which is screwed down upon the top of the casing a,to hold the sleeve m in what ever position it may be set. The handle, stops, and graduations of the valve are the same as already described in connection with Figs. 4 and 5; but it will be seen that the (lial-rimf is cast integral with the casing a, and that it is preferably formed with an annular groove on the top, in which is inserted an engraved or enamelled dial plate or ring, t, as shown in Figs. 12 and 13.

It will now be seen, referring to Fig. 12, that the adjustment of the way in this valve is readily effected by first turning the stem of the valve so as to raise the valvedisk c to the maximum or more than the maximum distance off the seat, after which the jam-nut 8 may be 1oosened,and the sleeve m then turned or screwed up to the desired extent until a sufficient portion of the notches in the lower end of the sleeve is brought above the valveseat to allow a sufficient flow of steam to equal the condensing capacity of the radiator, or nearly so, as will be understood, after which the jam-nut is tightened to hold the sleeve at said adjustment.

It will be noted that the sleeve has a hexagonal head at the upper end,by which it may be readily turned by the fingers or bya wrench,

and it will be also seen that as the screw threads between the casing and the sleeve are I of the same pitch as the screw-threads between the sleeve and the valve-stem, hence the described adjustment of the sleeve may be made without displacing the valve-stem and its disk from any position in which it may have been left and without altering the relations of the parts with each other.

In Figs. 14 and 15 I show a still further modification of my invention,which is stillfurther simplified in that it omits the yielding stopper and also the adjustable-sleeve, the

way in this case being adjusted by the greater or less distance which the valve-disk is raised from its seat when the operating-hantile is moved around to the stop for the limit of opening, which stop'is in this case made adj ustable to allow for the adjustment of the way in the said manner. In this valve, as seenin Fig. 14, the dial-rim f and seat-rim d are made integral with the casing a, as in Fig. 12. The valve-disk e is also solid on the stem and seats solidly on the seat-rim d, and above the valve-disk the stem is formed with a threaded hub, u, having preferably a fine thread, the same as in Fig. 12, which screws into the threaded interior of the casing to. The top of the stem projects through the guiding or gland neck f, which may or may notrhave a stuffing-box, but which screws into the top of the casing, as shown, and between the shoulder at the base of the said neck f and the top edge of the casing is interposed and clamped a ring, 1;, having a radial arm, j, which projects-out over the dial-rim in the pathof the indexfinger h and this arm forms the stop which limits the maximum opening of the valve, being marked Open, as shown,while the mark Shut is on a fixed definite point of the dial-rim, as shown. The adjustment of the way in this case is therefore effected by loosening the neck f, and thereby loosening the ring I), with its stop j, and leaving it free to yield to the advance of the operating-handle and its index-finger. The handle of the valve 'may now be gradually revolved, so as to gradually raise the valve off its sea-t until the. proper position is found which admits the true maximum flow to the radiator, when the stop 9' is moved up in contact with the index fingenand the neck f screwed down.thus holding the stop at said position, and therefore fixing the limit for the maximum opening of the valve thereafter. It will he therefore seen that when the handle is moved to anyintermediate position between Shut and Open the flow will be reduced in proportion to the approach to the minimum or shut end of the scale, thus obtaining the desired graduation or fractional supply or regulation ofthe steam, as before described, which forms the characteristic advantage of my invention. It will be easily understood that the valve- 13o disk in Fig. 14 may be made to yield on the stem in the same manner as in Fig. 1, so as to fractional valve, as it enables a fractional control or graduation of steam-heat in radiators, which has heretofore been as impracticable as it has been desirable. Besides this primary advantage, the new valve or the system of which the valve is a part secures better circulation, with unobstructed escape of water of condensation, and consequent nonliability of freezing in the radiator. In addition to this, the fractional valve enables the entire heating apparatus to be greatly simplified, as it takes the place of three common valves to one radiator-viz., the supply, return, and air valves; also, the air-valve drip pipe requires no stuffing'box and has but one moving part, so that, hence, the system of the new valve is not only much more advantageous, but much simpler than the old system.

Having now described the principal and elements of my invention and some of the va rious forms in which it may be embodied, what I claim as my invention is as follows:

1. A regulable valve for governing the sup ply of steam or other fluids combining the following elements: means for adjusting the effective area of the way or passage with a movable valve or stopper for opening or closing said way and astop to limit the movement of said stopper and representing the maximum movement thereof, substantially as and for the purpose set forth.

2. A regulable valve for steam heaters or their equivalents, constructed with means for adjusting the effective area of the internal way or passage, in combination with a movable valve or stopper controlling said way, an external operating-handle and index-point, and a graduated scale or dial over which the same is movable, as and for the purpose set forth.

3. A regulable valve for steam heaters or equivalent purposes combining the following features: means for adjusting the effective area of the internal way or passage, a movable valve or stopper controlling said passage, and an external operating-handle with an index point or finger, a scale or dial over which said handle or index is movable, and a stop or steps limiting the movement of said handle, substantially as and for the purpose set forth.

4. In a regulatingvalve, the combination with an adjustable way, of a movable stopper controlling the same and a yielding stopper adapted to yield and open to increased pressure with means for locking the same against so opening, an external operating-handle, and a graduated scale over which the same is movable provided with graduations representing the open, closed, and locked positions of the said valve, substantially as and for the purpose set'forth.

The combination, in a regulating-valve, with a valve-seat in the internal way and a movable disk operating in relation therewith to open and close the way, of a notched or perforated sleeve, such as m, fitting around the valve or seat and adjustable thereon, for regulating the effective area of the way, substantially as set forth.

6. The combination, in a valve,with a valveseat in the internal way and a valve-disk operating in relation therewith, of an adjustablescrew-sleeve, such as m, having a notched 0r perforated edge fitting around the valve and seat and having a screw-engagement upon a sustaining part of the valve with a clamping device to hold said sleeve at the desired adjustment, substantially as set forth.

7. The combination, with a valve casing having the seat 01, of the valve-disk e, the adjustable notched screw-sleeve m, fitting around the valve and seat, screwing into the casing, and projecting therefrom for manipulation or adjustment, with the valve stem 9, screwing into the said sleeve, and means for turning the said stem and for clamping the said sleeve at desired adjustments, substantially as set forth.

8. A regulable valve combining the following features: a movable stopper for controlling the way with a yielding valve adapted to yield and open to an increased pressure, with means for locking the same against so opening when desired, substantially as set forth.

FREDERIO TUDOR.

\Vitnesses:

JNO. E. GAVIN, Cults. M. l-IIooINs.

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