US969519A - Pressure-regulator. - Google Patents

Description

J. R. BROWN.

PRESSURE REGULATOR.

APPLIGATION FILED an. as. 1910.

, Patented Sept. 6,1910.

mayb- UNITED STATES JOHN ROWLAND BROWN, 0F MA NSFIELD, OHIO, ASSIGNOR '10 OHIO BRASS COMPANY,

0F MANSFIELD, OHIO, A CORPORATION OF NEW JERSEY.

PRESSURE-REGULATOR.

' Specification of Letters Patent. Application filed January 28, 1910. Serial No.-

Patented Sept. 6, 1910. 540,592.

To all whom it may concern:

Be it known that I, JOHN ROWLAND BROWN, a citizen of the United States, residing at Mansfield, in the county of Richland and State of Ohio, have invented certain newand useful Improvements in Pressure- Regulators, of which the following is a specification.

This invention relates to improvements in pressure regulators and more particularly to fluid pressure reducing valves forreducing high pressure of fluid to low pressure for various purposes and uses, and one of the objects of the invention is to provide an improved device of this character, including a main valve, a fluid actuated. element for actuating the main valve, and improved means for causing the main valve to move a greater distance than the movement of the fluid actuated element.

A further object is to provide an improved multiplying lever connection be- 7 maybe operating with the tween the main valve and the fluid actuated element to produce a different degree of movement between the parts and improved means whereby the movement of the valve may be varied.

A further object is to provide an improved device of this character in which the controlling 'and main operating elements may be removed independently with respect to each other. a

A further object is to provide an improved device of this character in which the main valve and its actuating mechanism readily removed or lifted out of the casing disconnecting the parts.

A further object is to provide an improved device of this character including a main valve and a supplemental valve 00- main valve, and improved means whereby one of the Valves will be opened in advance of the other to permit the initial pressure to build up to either palrtiall-y or completely balance the main va ve.

To the attainment of these ends and the accomplishment of other new and useful obects as will appear, the invention consistsin the features of novelty in the construction, combination and arrangement of the several parts hereinafter 'more fully described and claimed and shown in the acof external without dismembering the same or ing and in the present exemdplification of the invention the numeral 10 esignates generally a valve casing or housing provided with an inlet opening 11 for the supply of fluid or initial pressure and an outlet opening 12 arranged on the service side of the valve.

The housing or casing 10' is provided with a; partition 13 dividing the same into the usual chambers 14, 15 and this partition is provided with an opening 16 forming a communicating passage between the chambers 14 and 15. The opening is preferably screwthreaded. A casing 17 having a closed bottom 18 and an open top is inserted into the opening 16 and is secured in place by means screw-threads which engage the screw-threads in the opening 16 in the partition 13. This casing 17 isprovided with outlet openings 19 in its Wall so that fluid entering the opening 11 and passing into the casing 17 will pass out of the casing through the openings 19 and out of the opening 12 through the service side of the valve. The casing may, if desired, be provided with a flange 20 which restsv upon the partition 13 and which serves as a means for supporting the casing; A' main valve 21 cooperates with the open top of-the casing 17 to form a closure and the valve may be means of guides into the casimg.

guided by 02 wings 22 which project rranged within the easing 17 and below the valve 21 is a piston 23 the valve 21 by which is connected with means of a stem 24 and a port or passage 25 is drilled in the stem 24 and this port or passage passes through the valve 21 and also has communication with the interior of the casing 17 below the piston 23.

Supported by the valve 21 is a casing 26 which is detachably connected to the .valve preferably by means of a screw-threaded connection. The valve 21 is provided with a projecting portion 27 which extends into the casing 26 and terminates short of the top of the casing to form achamber 28 and this chamber 28 has communication with the chamber 14 on the initial pressure side of the regulator by means of ports or passages 29 passing through its wall. A supplemental valve chamber 28 and cooperates with the projection' 27 on the valve 21 to form a closure for the port or passage 25 in the stem 24, and this projecting portion 27 forms a valve seat against which the valve 30 is adapted to rest. The valve 30 is provided with a flange 31 which is adapted to be moved into engagement with the top of the casing 26 for a purpose to be hereinafter set forth.

The upper part of the main casing 10, is flanged-as .at 32 and arranged within the casing and resting upon the flange 32 is a support- 33, which is provided with a tubular portion 34 to form a guide for the stem 35. This stem 35 projects beyond the support 33 and is secured to a diaphragm or fluid-actuat'ed element 36 in any desired or suitable manner, preferably by passing through the diaphragm. A hub 37 is arranged on one side of the diaphragm and a support 38 cooperates with the hub and is arranged on the other side of the diaphragm and one extremity of the stem 35 passes through both the support and hub and projects beyond the hub. The projecting extremity 39 of the 'stem is preferably threaded and a nut or collar 40 engages the threaded portion for securing the parts together. The periphery of the diaphragm 36 rests upon the flanged portion 32 of the casing 10 and a cap 41 also rests upon the flanged portion 32 and is secured against accidental displacement by means of suitable fastening devices 42; The diaphragm or fluid-actuated element 36 is supported out of contact with the central portion of the support 33 and the ca 41 so that the compartment formed b the cap and support" will be divided into wo chambers 43, 44 located respectively below and above the-fluid-actuatedelement.

The cap 41 is provided with an offset portion 45 arranged above the stem 35, and an elastic member 40, such as a coil s ring or the like, is arranged within the oif set portion 45 so that one extremity thereof will rest upon the bottom of the portion and the other extremitly will rest upon the hub 37. The normal tendency of this elastic member 46 is to move the diaphragm or fluid element 36 in one direction to seat the main valve 21 through the medium ofintermediate CODIIGQEODS which will'no'w be described. These connections preferably comprise multiplying levers 47, 48. The lever 47 is anchored to the support 33 by means of a link 49, one end of which link is pivotally connected to the suppoi't and the other end to one end of the lever. The other end of the =lever 47 is connected by means 30 is arranged within the of a link 50 to the lever 48 intermediate the ends of the latter. One end of the lever- 48 is connected as at 51 to the valve 30 and the other end of the lever 48 is anchored to the support 33 by means of an adjustable link comprising a section 52 which is pivotally connected to the support 33 and a section 53 which is pivotally connected to the lever 48 and adjustably connected to the section 52, so that the sections 52, 53 may be adjusted with respect to each other so as to properly assemble the levers. The lever 47 is pivotally connected as'at 54 to the stem 35 so that when the stem is moved through the guide 34 the levers 47, 48, will be operated to adjust the valve 30. The stem 35 is provided with a port or extends therethrough and orms a communicating passage between the chamber 14 on the inlet or initial ressure side of the regulator and the cham er44 on one side of the fluid actuated element 36. The stem is mounted to move loosel in the guide 34 so that initial pressure wil? pass into the chamber 43 between the stem and the guide.

The bottom 56 of the casing or housing 10 is provided with an opening 57 and a controlling valve casing designated generally by the reference numeral 58 is secured to the casing 10 by means of suitable fastemng devices 59. This casing 58 is provided with a projecting portion 60 which is adapted to extend into the opening 57 and 7 a gasket 61 is arranged to surround the projecting portion 60 to form a fluid tight Arranged within joint between the parts. the casing 58 and removably secured therein is a controlling valve seat 62, and a controlling valve 63 cooperates with the seat and is held against its seat by means of a suitable elastic member 64 such as a coil spring or the like. is arranged within a chamber 65 and this chamber has communicationwith the chamber 44 211; the top of the regulator through the medium of a port or passage 66, tubular members 67, and ports or passages 68, 69, in the cap 41. The chamber 65 in which the controlling valve 63 is located also has communication with a chamber 70, which latter has communication with the service pressure side of the regulator through the medium of a port or passage 71. The controlling valve 63 is provided with guide wings 72 which extend through and beyond the removable seat 62 seats to engage and restupon adiaphragm 73, which latter is located within a chamber 74, and which chamber has communication with the chamber 70 by means of a port or passage 75 The elasticv member 64.

enters the chamber 74 when the controlling valve 63 is unseated will be discharged from the chamber and into the chamber 12 in the valve housing 10 on theservice side of the valve through the port 75, chamber 70 and port or passage; 71. With this im roved constructlon it will be apparent that t e controlling diaphragm 73 is subject to the pres-- sure on the service side of the valve.

The diaphra 73 may be removab'ly supported and he d in position in an desired or suitable manner, but preferably y means of a casing 76, one end of whichis removably secured to the controlling valve casing 58,-preferably by means of a screw-threaded engagement therewith, so as to clam the diaphragm 73 in position. Arrange within the casing 76 is an elastic regulating member 77, such as a coil spring or the like, one extremity of which engages a hub or head 78, which latter engages and rests against the side of the diaphragm 73 opposite to that against which the controlling valve 63 enga e. The other extremity of the elastic mem er 7 7 has engagement with an adjustable member 79, which latter is adapted to be adjusted by means of a threaded stem 80 havin a bearmg 81 in the casing 76. An operatmg han dle 82 is secured to the free end of the stem 80, and a jam or lock nut 83 is provided for locking the parts in their adjusted positions. The service pressure from the service side 12 of the valve is admitted to the diaphragm 73 through the medium of the port 71, chamber 70 and the port 75. The

pressure on the diaphragm 7311s balanced bythe regulatin spring or elastic member 77 the tension which latter is controlled by the. adjusting stem; 80.

It is thought that the operation of this improved regulator will be clearly under stood from the above but briefly stated, it is as follows: Fluid or initial pressure enters the regulator through the inlet 11 into the chamber -14 and passes upwardly through the port or passage 55 in the stem 35 and into the chamber 44 on one side of the fluid influenced element 36. At the same time the fluid will pass between the stem 35 and the guide 34 into the chamber 43 on the opposite side of the fluid influenced element 36. The pressure in the chambers 44 and 43 will therefore be equal and the fluid influenced element 36 will be balanced. The initial pressure or fluid also acts downwardly on the main valve 21, as wellas the supplemental valve 30, holding them on their seats. Initial fluid pressure also acts on the controlling valve 63 through the pas sages 69, 68, 67, 66, to hold the controlling valve against its seat. By manipulating the adjusting stem 80 the elastic member 77 will force the diaphragm 73 upwardly to lift the wings 72 of the controlling valve 63 and allow fluid to flow from the chamber 44 through the passages 69, 68, 67 66,.to the controlling valvechamber 65, and ports 84, which form communication between the chamber 65 and the chamber 70. From the chamber 70 the fluid will flow through the passage 71 into the chamber '15 on the service side of the regulator and out of the outlet 12. This reduces the pressure in the chamber 44 on one side of the fluid influenced element 36 and the initial pressure in the chamber 43 on the other side will operate the fluid influenced element 36 and the stem 35 and this movement of the stem 35 is multiplied by the levers'47, 48. The first part of this movement will unseat the valve allowing fluid at initial pressure to flow throu h the port or passage 25 in the stem 24, eneath the piston 23. This piston '23 is preferably slightly smaller in diameter than the main valve port and therefore the valve is not completely balanced by the admission of fluid at initial pressure into the casing 17 but is only partially balanced. Further movement of the stem in the same direction and the levers 47, 48, will further adjust the valve 30 until the flange 31 engages a shouldered portion 011 the casing 26 and a still further movement of the levers in the same direction will transmit the motion directly to the main valve 21. When the main valve 21 is moved from its seat, fluid will flow from the inlet opening 11 through the main valve seat into the casing 17 above the piston 23, and out through the openings 19 into the chamber 15 and .out through the outlet 12 on the service side. As soon as the pressure on the service side builds up to the required amount it forces the diaphragm 73 in a direction to overcome the tension of the regulating spring 77 and permits the controlling valve 63 to be seated. The out-flow of fluid from the chamber 44 on one side of the fluid influenced element 36 being thus stopped, the pressure will build up by flowing throu h the port or passage in the stem 35 and when the fluid influenced element 35 is nearly balanced, the pressure of the elastic member 46 will close the main valve 21. When the supplemental valve 30 closes, the initial pressure fluid in the casing 17 below the piston 23, will leak past the piston to the other side thereof and out'of the ports or openings 19 into the chamber 15 and out of the outlet 12 onthe service side of the regulator, and the main valve 21 will be held seated or closed by the difference in the pressure between the initial and service sides of the regulator. With this improved construction the action of the valves will not be intermittent in ordinary service but the valve will practically float. The piston '23 ispreferably of a smaller area than the opening which is controlled by the valve 21 so that the valve will not be completely balanced and therefore will have a positive closing-force due. to the pressure and independent action of the elastic member 46. Obviously, the piston 23 might be made-of such an area that the valve 21 willbe completely balanced and then the elastic member 46 would serve as the closing force. The levers 47,- 48, are so proportioned that for a full opening of, the valve 21 the fluid influenced element 36 will not move beyond safe limits, and ribs 85, 86 are provided which together with the hub 37 and support 38 prevent any excessive movement or strain of the fluid influenced element. The area of the fluid influenced element 36 is also preferably such that the pressure difl'erence between the chambers 43 and 44 need never be great, say, for example, five pounds, and therefore the strain on thefluid influenced element will not be great and its life will be prolonged.

The force of the elastlc member 46 need not be great as the unbalanced area of the main valve is small, just suflicient to insure the valve closing properly.

With this improved construction 'it will be apparent that the controlling valve 63 can be removed by unscrewing or removing the'casing 76 and the controlling valve seat 62. B removing the fastenin devices 42,

and dlsconnecting the union etween the sections of the passage 67 the cap or cover 41 may be readily remov After the cover has been removed the main fluid influenced element 36 can also be removed by removing the nut 40 and the hub 37. With these arts detached, the support 33 which rests oosely upon the flange 32 of the main cas- 1ng or housing 10, stem 35, levers 47, 48, supplemental valve 30, main valve 21 and piston 23 may be lifted out withoutdi'sconnectirig or dismembering any of the parts. In order that the invention might. be fully understood, the details of the foregoing, embodiment thereof have been thus specifically described, but. i Y

What is claimed as new is- I 1. In a. pressure regulator, a casing having an initial pressure inlet and a service pressure outlet, a valve seat disposed between said inlet andoutlet, a', main valve cooperating with the, seat for regulatin the justment to the supplemental valve, and

means whereby the final movement of the;

su plemental valve will adjust the main va ve.

2. In a pressure regulator, a casing having an initial pressure inlet and a service plemental valve,

' supplemental valve, said mental valve bein pressure outlet, a valve seat disposed between said inlet and outlet, a main valve 00- operating with the seat for regulatin the passage of fluid therethrough, aflui influenced element, a supplemental valve 00- operating with the mam valve, multiplying leverconnections between the su plementa valve and the fluid influence d element wherebythe movement of the latter will adjust the valve, said supplemental valve bemg ca able of initial movement independently with respect to the main valve, and means whereby the final movement of the supplemental valve will adjust the main valve.

3. In a pressure regulator, a main valve, a supplemental valve, a fluid influenced element, multiplyin lever connections between the su plementa .valve and the fluid influence element whereby the movement of the latter will impart movement to the supsaid supplemental valve being adapted for initial movement independently with means operativel related to the main valve and adapted to e engaged by the supple mental valve during the initial movement 01 the-latter whereby the main valve will be moved by the final movement of the supplemental valve.

4. In a pressure regulator, a main valve, a supplemental valve a fluid influenced element, multiplying lever connections betweenthe su plemental valve and the fluid influenced e ement whereby the movement of the latter will impart movement to the bem adapted for initial movement inde- -pen ently with respect to the main valve, means whereby the final movementofothe su plemental valve will adjust the main val ve,-and adjusting mechanism for the lever connections.

*5. In a pressure regulator, a main valve, a supplemental valve, a fluid influenced element, multiplyingv lever connections between the supplemental valve and the fluid influenced element whereby the movement supplemental valveof the latter will impart movement to thesu plemental valve, bem adapted for: initial movement indepen ently with respect to the main valve, means whereby the final movement of the supplemental valve will adjust the ma n va ve, and an adjustable link included 111 said lever connections.

6. In' a ressure regulator, a casing a main valve in t e casing, a supplemental valve co-v operating with the main valve, said suppleadapted for initial moveinent inde endent y with respect to the main valve, a uid influenced element, multiplying lever connections between the supplemental valve and the said element whereby the movement of the latter will move the said supplemental valve supplemental valve, means adapted to be engaged'by the supplemental valve during supplemental valve being adapted for initial movement independently with respect to the main valve, a fluid influenced element, multiplying lever connections between the suplplemental valve and the said element wherey the movement of thelatter will move the supplemental valve, means adapted to be engaged by the supplemental valve during its final movement for adjusting the main valve, a removable support within the easing to which the levers are connected, said support, levers, connections and valves being removable from the casing as a unit, and an adjustable link included in said lever connections.

8. In a pressure regulator, ing an initial pressure inlet pressure outlet, a chamber and said inlet and outlet, a valve for closing said chamber to the inlet side of the casing, to control the flow of fluid therethrough, said valve having a passage therethrough and through which fluid is adapted to enter the chamber, means whereby the fluid in said chamber will act u n the main valve, a supplemental valve or controlling the passage through the main'valve, a fluid influenced element, and means whereby the movement of saidelement will impart an initial movement to the supplemental valve and a multiplied movement to both of said valves.

9. In a pressure regulator, a casing having an initial pressure inlet and a service pressure outlet, a chamber disposed between and having communication with both the inlet and outlet, a valve for closing said a casing havdisposed between chamber to the inlet side of the casing to ing a multi control the flow of fluid therethrough, said valve having a passage therethrough and through which fluid is adapted to enter the chamber, chamberwill act u on the main valve, a supplemental valve or controlling the pas sage through the main valve, a uid influenced element, and lever connections between said element and valves for impartlying movement to the. supplemental va ve and also movement to the main valve.

10. In a pressure regulator, a casing having an initlal pressure inlet and a service pressure outlet, a chamber disposed between and having communication with both the inlet and outlet, a valve for closing said and a service having communication with. both of means whereby the fluid in said' chamber to the inlet side of the casing to control the flow of fluid therethrough, said valve having a passage therethrough and through which fluid is adapted to enter the chamber, 'means whereby the fluid in said chamber will act upon the main valve, a supplemental valve for controlling the passage through the main valve, a fluid influenced element, lever connections between said element vand supplemental valve for imparting a multiplying movement to the supplemental valve, and means whereby the supplemental valve will during a portion of its movement impart movement to the main valve.

11. In a pressure regulator, ing an initial pressure inlet and having communication with both the inlet and outlet, a valve for closing said chamber to the inlet sideof the casing to control the flow of fluid therethrough, said valve having a passage therethrough and through which fluid is adapted to enter the chamber, means whereby the fluid in said chamber will act u on the main valve, a supplemental valve For controlling the passage through the' main valve, a fluid influenced element, lever connections between said element and valves for imparting a multiplying movement to the valves, and a removable sup ort to which the levers are connected, said support, lever connections and valves being removable as'a unit from the casing.

12. In a pressure regulator, ing an initlal pressure inlet and a service pressure outlet, a chamb r removably supported between and having communication with both the inlet and outlet, a valve for closing said chamber to the inlet side of the casing to control the flow of fluid therethrough, said valve having a passage therea casing havthrough and through which fluid is adapted to enter the chamber, means whereby the fluid in said chamber will act upon the main valve, a supplemental valve for controlling the passage throllgh the main valve", a fluid influenced element, and means whereby the movement of said element will impart an initial movement to the supplemental valve and a'multiplied movement to bothof said valves.

13. In a pressure. regulator, a casing having an initial pressure inlet' and a service pressure outlet, a chamber disposed between and having communication with both of said inlet and outlet, a valve for closing said chamber to the inlet side of thecasing, a iston connected with the valve and movable in the chamber, passage therethrough and forming a communication between the inlet side of the easing and the chamber, to permit fluid at initial pressure to act upon the piston, a supa casing hav and a service pressure outlet, a chamber disposed between,

said valve having a and having communication with both of said inlet and outlet, a valve for closing said chamber to the 1nlet side of the casing, a piston connected with the valve and movable in the chamber, said valvehaving a passage therethrough and forming a communication between the inlet side of the casing and the chamber, to permit fluid at initial ressure to act upon the piston, said piston having a diameter smaller than the diameter of the main valve, a supplemental valve for controlling said passage, a fluid influenced element, means for imparting an initial movement from the fluid influenced element to the supplemental valve and a multiplied movement to both valves, and a removable support to'which the levers are connected, said support, lever connections, valves and piston being removable as a unit from the casing.

15. In a pressure regulator, the combination of a piston valve and a supplemental valve, multiplying levers so connected to the valves as to impart an initialmovement to the supplemental valve and a multiplied movement to both of the valves, a removable support to one side of which the levers are connected, a fluid influenced element on the other side of thesupport, and a coimection between the said element and levers for actuating the latter, said connection having a bearing in the support.

16. In a pressure regulator, the combination of a piston valve and a supplemental valve, multiplying levers so connected to the valves as to impart an initial movement to the supplemental valve and a multiplied movement to both of the valves, a removable support to one side of which the levers are connected, a fluid influenced element on the other side of the support, and a stem passing loosely throu h the sup rt and connected to the flui influence element and the levers whereby the levers will be actuated by the movement of the said element.

17 In a pressure regulator, the combination of a piston valve and a supplemental valve, multiplying levers so connected to the valves as to impart an initial movement to the supplemental valve and a multiplied movement to both of the valves, a removable support to one side of which the levers are connected, a fluid influenced element on the from the ply side other side of the support, said support 00- operating with the casing to form a compartment, said fluid influenced element dividing the compartment into two chambers, means connecting the fluid influenced element with said levers, both of said chambers having communication with the initial fluid supply side of the regulator, and a passage from one of said chambers forming communication with the service side of the regulator.

18. In a pressure regulator, the combination of a piston valve and a supplemental valve, multiplying levers so connected to the valves as toimpart an initial movement to the supplemental 'valve and, a multiplied movement to both of the valves, a removable support to one side of which the levers are connected, at fluid influenced element on the other side of the support, said support 00-- operating with the casing to form a compartment, said fluid influenced element di-' viding the compartment into two chambers,

means connecting the fluid influenced element with said levers, both of said chambers having communication with the initial fluid pp y one of said chambers forming communication with the service side of the regulator, and means for automatically controlling the last said passage.

19. In a tion of a piston valve and a supplemental valve, multiplying levers so connected to the valves as to impart an initial movement to the supplemental valve and a multiplied movement to both of the valves, a support cooperating with the casing to form a compartment,-'a fluid influenced elementin the compartment and dividing the. compartment into two chambers, a stem passing loosely through the support and forming a restricted passage between the stem and support and a communication between one of the chambers and the initial ressure supof the regulator sai stem being connected to the levers and the said element whereby the movement of the latter will adjust the levers, said stem being provided with a passage therethrough forming a communication between the other of said chambers and the initial pressure or supply side of the regulator, and a passage leading from one of said chambers and communicating with the service side of the regulator.

'20. Ina pressure regulator, the combination of a piston valve and a supplemental valve, multiplying levers so connected to the valves as to impart an initial movement to the supplemental valve and a multipli movement to both ofthe valves, a support dooperating with the casing to form a compartment, a fluid influenced element in the compartment and dividing the compartment into two chambers, a stem passing 1 v side of, the regulator, a passage from ressure regulator, the combinathrough the support and forminga restricted passage between the stem and support and a communication between one of thechambers and the initial pressure supply sideof the regulator, said stem'being connected to the levers and the said element whereby the movement of the latter will adjust the levers, said stem being provided with a passage therethrough forming a communication between the other of said chambers and the initial pressure or supply side of the regulator, and a passage leading from one of said chambers and communicating with the service side of the regulator, said levers being connected to the support and said support being removably secured in the caslng whereby the support, levers, stem and valves may be removed from the casing as a unit.

21. In a pressure regulator, the combination of a piston valve and a supplemental valve, multiplying levers so connected to the valves as to impart an initial movement to the supplemental valve and a multiplied movement to both of the valves, a support cooperating with the casing to form a compartment, a fluid influenced element in the compartment and dividing the compartment into two chambers, through the support and forming a restricted passage between the stem and support and a communication between one of the chambers and the initial pressure supply side of the regulator, said stem being connected to the levers and the said element whereby the movement of the latter will adjust the levers, said stem being provided with a passage therethrough forming a communication between the other of said chambers and the initial pressure or supply side of the regulator, chambers and communicating with the service side of the regulator, said levers being connected to the support and said support being removably secured in the 1 casing whereby the support, levers, stem and valves may be removed from the casing as a unit, and a valve for automatically controlling the last said passage.

22. In a pressure regulator, the combination of a piston valve and supplemental valve,-multiplying levers so connected to the valves as to impart an initial movement to the supplemental valve and a multiplied movement to both of the valves, a support cooperating with the casing to form a compartment, a fluid influenced element in the compartment and dividing thecompartment into two chambers, a stem passing loosely through the support and forminga restricted passage between the stem and support and .a communication between one of the chambers and the initial pressure supply side of the regulator, said stem being connected to the levers and the said element whereby the movement of the latter will, adjust the levers,

into two chambers, a stem a stem passing loosely' with a passage therethrough forming a coma passage leading from one of said said stembeing provided with a passage therethrough forming acommunication between the other of said chambers and the initial pressure or supply side of the regulator, a passage leading from one of said chambers and communicating with the servicesi'de of the regulator, said levers being connected to the support and said support being removably secured in the casing whereby the support, levers, stem and valves may be removed from the casing as a unit, a valve for automatically controlling the last said passage, and means whereby the main and supplemental valves and the said controlling valve may be removed independently with respect to each other.

23. In a pressure regulator, the combination of a piston valve and a supplemental valve, multiplying levers so connected to the valves as to impart an initial movement to the supplemental valve and a multiplied movement to both of the valves, a support cooperating with the casing to form a compartment, a fluid influenced element in the compartment and dividing the compartment assing loosely through thesupport and orming a restricted passage between the stem and support and a communication between one of the chambers and the initial pressure supply side of the regulator, said stem being connected to the levers and the said element whereby the movement of the latter will adjustthe levers, said stem being provided a munlcation between the other of said chambers and the initial pressure or supply side of the regulator, a passage leading from one of said chambers and communicating with the service side of the regulator, said levers being connected to the support and said support being removably secured in-thecasing whereby the support, levers, stem and valves may be removed from the casing as a unit, a valve for controlling the last said passage means for operatin the last said valve an a fluid influenced e ement for automatically controlling the operation of said valve.

24. In a pressure regulator, the combination of a casing, a piston .valve and a supplemental valve, multiplying levers so connected to the valves as to impart an initial movement to the supplemental valve and a multiplied movement to both of the valves,

a fluid influenced element operatively connected to the levers whereby'the movement of the element will actuate the levers, a chamber on each side of said element, both I of said chambers having communication with the initial pressure-or supply side of the regulator, a supplemental casing a passage in said supplemental casing having communication' with the service side of the regulator, a valve in said supplemental casin for controlling the last said passage, one o the first said chambers having communication with the last said passage, and means .for detachably securing the supplemental casing to the first said casing.

25. In a pressure regulator, the combina nected to the levers whereby the movementof the element will actuate the levers, a chamberon each side. of said element, both of said chambers having communication with the initial pressure or supply side of the regulator, a supplemental casing, a passage c in said supplemental casing havlng communication with the service side of the regu; lator, a valve in said su plemental casin or controlling the last sai passage, one o the first said chambers having communication with the last said passage, means for detachably securing the supplemental casing to the first said casing, and a fluid influenced element for controlling the operation of the last said valve.

In testimony whereof I have signed my name to this specification, in the presence of two subscribin witnesses, on this sixth day .of January A. 1910.

JOHN ROWLAND BROWN.

Witnesses:

C. V.- MARKS, G. L. BUGHAN.

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