US1889142A - Regulating valve - Google Patents

Description

Nov. 29, 1932. H. H. DOUGLASS ET AL REGULATING VALVE Filed April 2, 1931 3 Sheets-Sheet l INVENTORS. v

Hownnp H. Dcuq-LHSS. ARTHUR H. DOUQLHSS.

A TTORNE Y.

Nov. 29, 1932. H. H. DOUGLAS S ET AL 1,889,142

REGULATING VALVE Filed April 2, 1951 I a Sheets-Sheet 5 III II\: 11IIIII/lI/IIIIIIIIIIIIII ATTORNEY.

Patented Nov. 29, 1932 UNITED STATES PATENT OFFICE HOWARDH. DOUG-LASS AND ARTHUR H. DOUGLASS, OF LOS ANGELES, CALIFORNIA, AS-

SIGINORS TO SUPERIOR BEGULATGR CO. INC., OF LOS ANGELES, CALIFORNIA, A 003- PORATION or CALIFORNIA Application filed April 2,

This invention relates to improvements in regulating Valves.

The general object of the invention is to provide an improved control device for antomatically regulating the flow of gas to a burner.

Another object of the invention is toprovide a regulating device of the class described which is adapted to be operated by fluid pressure.

A further object of the invention is to provide a regulating device of the class described which includes a closure valve and means for forcing the valve to a closed position after it has passed a predetermined point.

- A still further object of the invention is to provide a regulating device of the class described Which is adapted to be operated by thermal-responsive means.

' Other objects and advantages of this in Vention will be apparent from the following description taken in connection with the accompanying drawings wherein:

Fig. 1 is a central longitudinal section through our improved regulating valve showing the closure valve in an open position.

Fig.2 is a section taken on line 2-2 of Fig.1. l v t Fig. 3 is a front view of the regulating valve with the cover removed and showing the closure valve in a closed position. Fig. 4 is a section taken on line 4-4 of Fig. 3. Y

Fig. 5 is a view of a steam generator showing our regulating valve operatively connected thereto.

Fig. 6 is a central longitudinal section through a modified form of our invention showing the closure valve in an open position. Fig. 7 1s a sectlon' taken on line 7-7 of Fig. 8 is a section taken on line 8-8 of Fig. 6. V r

Fig. 9 is a front view of our modified form of regulating valve with the cover removed and showing the closure valve in a closed position.

Fig. 10 is a section taken on line 10-10 of Fig. 9, and V Fig. 11 is a view of'a hot water heater REGULATING VALVE 1931. Serial No. 527,160.

showing our modifiedregulating valve operatively connected thereto.

Referring to the drawings by reference characters we have indicated our improved regulating valve generally at 10. As shown the regulating valve comprises a housing 12 having a chamber 13 therein which is closed by a cover plate 14 shown as secured to the housing by a plurality of screws 15. On the top of the housing 12 we provide a boss 16 and on the bottom of the housing a boss 17. The upper boss 16 is provided with an inlet aperture 18 which communicates with the chamber 13 and is partially threaded as indicated at 19. The lower boss 17 is provided with an outlet aperture 20 which communicates with the chamber 13 and is. partially threaded as indicated at 21. Within the chamber 13 and coaxial with the outlet aperture 20 we provide an annular raised valve seat 22.

At one end of the housing 12 we provide a boss 23 having a threaded aperture 24 therein which communicates with the chamber 13 at its inner end andadjacentthe outer end of the'boss we provide an enlarged recess 25. Positioned in the threaded aperture 24 we provide a threaded plug 26 which isprovided on its inner end with a reduced boss 27.

Positioned in the recess 25 and surrounding the threaded plug 26 we provide a packing member 28 and for retaining the plug 26 in an adjusted position we provide a'lock nut 29 which includes a reduced flange 30 which is adapted to enter the recess 25 and en age the packing member 28.

n the end of the housing 12 opposite the boss 23 we provide an integral boss 32 which is provided with a threaded recess 33 and a reduced recess 34. Within the reduced recess 34 we provide a coaxial reduced boss 35 which is provided with a partially threaded recess 36 from which an aperture 37 extends into the chamber 13. Within the chamber 13 and intermediate the length thereof We provide a bracket 38 which is integral with the housing 12 and has an aperture 39 therein which is coaxial with the aperture 37. Positioned in the apertures 37 and 39 we provide a rod- 40 which includes anenlarged a ball member 47 is positioned.

Positioned in the recess 36 and surround ing the rod 40 we provide a packing material 48 and a nut 49 which is" adapted to compress the packing material.

Positioned in the recess 33 of the boss 32 we provide an arcuate diaphragm member 50 which is ada-ptedto be clamped in position by a nut 51 having threads thereon which engage the threads in the recess 33. The inner end of the nut 51 is arcuate as indicated at 52 to correspond to the normal shape of the diaphragm member 50 and the nut is provided with'an aperture 53 which is partially threaded as indicatedat 54..

To allow adjustment of the pressure of the packing material 48 on the rod 40' after the diaphragm and nut 51 have been placed in position we provide a threaded aperture 55 in the housing 12 which communicates with the recess 36 and extends to the exterior of the housing. Positioned in the threaded apertures 55 we provide a screw 55". The packing material 48 is preferably a pasty composition so it will be readily seen that by backing out the screw 55 more packing material may be inserted in the recess 36 to form a tighter packing around the rod 40 and then the screw 55" is replaced. When it is desired to lessen the pressure of the packing material around the rod the screw 55 may be backed out slightly.

For retaining the-head 41 of the rod 40 in engagement with the'diaphragm member 50 we provide a coiled spring 55. One end of the coiled spring engages the inner end of the plug 26 and surrounds .the' boss 27 thereon and the opposite end of the spring engages the ball 47 in the holder 44.

Positioned in the chamber 13 we provide a closure valve 56 which is adapted to coact with the valve seat 22 to restrict passage through theoutlet aperture 20. The valve 56 is. preferably made of fibrous material and is provided with a slot 57 in which a bell crank operating arm 58 is positioned. The closure valve 56 is connected tothe operating arm 58 by a pin59 which is positioned in the closure valve and extends through an aperture 60 in the operating arm 58. The slot 57 in the valve 56 is of greater width than the width of the operating arm 58 and the aperture 60 in the operating arm 58 is larger than the pin 59 so that the closure valve has a universal movement relative to the operating arm.

The operating arm 58 includes an enlarged portion 62 which is pivotally mounted on a stud 63 secured to a boss 64 which is integral with the housing 12. The enlarged portion 62 of the operating arm 58 is provided with a recess 65 in which the collar 43 on the rod'4O is positioned and the sides of the recess 65 are rounded as at 66 and engage opposite sides of the collar 43. Thus it will be apparent that when the rod 40 is moved against the action of the coiled spring 55 the collar 43 will cause the operating arm 58 to move downward thereby moving the closure valve 56 into engagement with the valve seat 22.

To be certain'that the closure valve 56 will firmly engage the Valve seat 22 we provide a member 67 which is made of a resilient material such as spring steel. The member 67 is secured to the housing 12 by screws 68 and is provided with an aperture 69 through which the coiled spring '55 passes. Adjacent the lower end of the resilient member 67 we provide a boss 70 which is triangular in cross section. The end of the operating arm 58 adjacent the closure valve 56 is beveled as at 71. Then the operating arm 58 is moved downward the end 71 thereof engages the boss 7 O on the resilient member 67 and moves it away from the arm until the bevel 71 passes the apex of the boss 70 whereupon the resilient member 67 springs towards the operating arm 58. In this position the end 71 of the operating arm 58 engages the under side of the triangular boss 70 which forces the operating arm 58 clownward and the closure valve 56 into tight engagement with the valve seat 22. 7

Secured to each side of the valve 56 by the pin 59 we providespring fingers 72, one of which resiliently engages the rear wall of the housing 12 and the other of which resiliently engages the cover plate 14. As the operating arm 58 moves upwardly the spring fingers 72 retard the movement of the valve 56 until the end 71 of the operating arm passes the apex of the boss 70 on the resilient member 67, whereupon further movement of the operating arm moves the valve out of engage ment with the valve seat. When the operating arm 58 travels toward the valve seat 22 the spring fingers 72 retard the downward movement of the valve 56 so that when the end 71 of the operating arm engages the boss 70 on the resilient member 67 gravity will not cause the valve 56 to engage the valve seat 22. Thus the valve 56 will remain out of engagement with the valve seat until the end 71 of the operating arm passes the apex of the boss 70.

In Fig. 5 we have shown the regulating valve 10 as operatively installed to control the flow of gas to a burner 74 of a steam genorator 7 5. When the device 10 is thus-used a pipe 7 6 extending from'a source of gas supply is connected to thedevice 10 by threaded engagement with thethreads 19 0i? the boss 16, and a pipe 77, which is connected to the device 10 by threaded engagement with the threads 21 of the boss 17, extends to theburn er 74, secured to the nut51 as by threaded em gagement with the threads 54 ot the aperture 53 we provide a pipe 78 which communicates with the interiorof the steam generator at a point where steam will enter thepipe 78. When the steam pressure in the generator is less than a predetermined amount the coiled spring 55 moves the rod l0 and the diaphragm member outward to the limit of their movement thereby causing the operating arm 58 to move the closure valve 56 .out of engage- %16I1l3 with the valve seat 22 as shown in i 1. I f i hen the steam-in the steam generator reaches a predetermined pressure. the diaphragm 50 and the rod 40 move inward against the action of the coiled spring thereby moving the operating arm 58 downward and moving the closure valve 56 into engagementwith the valve seat 22 thereby restricting the passage of gas through the device 10 from theinlet aperture 18 to the outlet aperture 20. a V

. To adjust the regulating device 10 so that a greater amount of steam pressure is required to operate the valve to a closed position, the

i look nut 29 is backed up and the plug 26 is moved inward to compress the coiled spring 55' and then the loclr nut is again tightened. If desired, adjustment may alsobe effected by moving the collar 43 along the rod 40; and securing it by the set screw 43. I

To adjust the device.10 so that less steam pressure is required to operate the closure valve to a closed position the lock nut 29 is backed off and the plug 26 is moved outward to lessen. the tension on the coiled spring 55 and then the lock nut is again tightened or the collar .43 maybe adjusted. i To allow a small quantityof gas to pass through the device 10 to the burner 74 we provide a by-pass around the valve seat to the outlet aperture. This by-pass includes a threaded aperture 80 in the housing 12, the inner end of whichopens into the chamber 13 and an aperture 81 which communicates with the threaded aperture 80 and the outlet aperture 20. Positioned in the threaded aperture 8 0 we provide a screw 82 which is adapted to act as a metering valve to control the passage of gas through the aperture81. For retaining the screw 82 in an adjusted position we provide a lock nut 83. Thus it will'be seen that when the screw 82 does not obstruct the passage of gas through the aperture 81 as shownin Fig. 1, and the closure valve 56 restricts the passage of gas through the outlet aperture 20,11. small quantity of gas will continue to pass through the by- pass apertures 80 and 81 to the outlet aperture 20 and thence through the pipe 77 to the burner-74.

In some instances it may be desirable to have the supply or" gas through. the device 10 to the burner 74 entirely discontinued when the closure valve 56 engages the valve seat 22 and a pilot member used to relight the burner when the closure valve again allows gas to pass through the device to the'burner. W hen this is desired the screw 82 is moved in- Wardto close the end of the aperture 81 and thereby prevent'passage of gas through the aperture 81 to the outlet aperture 22 as shown in Fig. 3.

In some installations where it is not necesthat the closure valve 56 tightly engage the valve seat 22 the resilient member 67 may be omitted.

To allow steam to escape before it enters the chamber 13 in case the diaphragm member 50 should break or a leak occur at this point we provide a plurality of apertures 84 in the boss 32which communicate with the reduced recess 34 therein.

in Figs. 0 to 10 inclusive we have indicated amodification of our invention generally at As shown this regulating valve 85 com prises housing 86having a chamber 87 therein which is closed by a cover plate 88 secured to the housing by a plurality of screws 89. On top of the housing 86 we provide aboss '90 and on the bottom of the housing we provide a boss 91. The upper boss 90 is provided with an inlet aperture 92 which communicates with the chamber 87 and is partially threaded as indicated at 93. The lower boss 91' is provided with an outlet aperture 9a which communicates with the chamber 8'? and is partially threaded as indicated at 95.

Within the chamber 87 and coaxial with the outlet aperture 9% we provide a valve seat 96.

At'one end of the housing 86 we provide a boss 97 having a threaded aperture 98 therein which communicates with the chamber 8?, and positioned in the threaded aperture 98 we provide a threaded plug 99 which includes a wrench engaging portion 100 and a threaded stem 102, and is provided with an aperture 103, Positioned in the aperture 103 and secured thereto as by brazing we provide a tube 104 which is preferably made of a slightly thermal-responsive metal. At the end of the tube 104 opposite the plug 99 we provide a Ill) integral with the housing 86 and has an aperture 116 therein which is coaxial with the aperture 114.

Positioned in the apertures 114 and 116 we provide a rod 117 which includes an enlarged end portion 118 with a threaded recess 119 in which the threaded portion 110 of the bar 109 is positioned. Surrounding the rod 117 and secured thereto between the bracket 115 and the end of the housing we provide a collar 120 and on the outside of the housing beyond the boss 112 we provide another collar 121 on the rod 117. v

Positioned in the recess 113 of the boss 112 and surrounding the rod 117 we provide a packing member 122 and a nut 123 which is adapted to compress the packing member.

Positioned in the chamber 87 we provide a closure valve 125 which is adapted to coact with the valve seat 96 to restrict passage through the outlet aperture 94. The closure valve 125 is preferably made of fibrous material and is provided-with a slot 126 in which an operating arm 127 is positioned. The closure valve 125 is connected to the operating arm 127 by a pin 128 which is positioned in the valve and extends through an aperture 129 in the operating arm 127. The slot 126 in the closure valve 125 is of greater width than the width of the operating arm 127 and the aperture 129 in the operating arm 127 is of a greater diameter than that of the pin 128 so that the closure valve has a universal movement relative to the operating arm.

The operating arm 127' includes an enlarged portion 130 which is pivotally mounted on a stud 131 secured to a boss 132 which is integral with the housing 86. The enlarged portion 130 of the operating arm 127 is provided withv a recess 133 in which the collar 120 on the rod'117 is positioned and the sides of the recess 133 are rounded as indicated at 134 and engage opposite sides 01 the collar 120. Thus it will be apparent that when the rod 117 is moved towards the plug 99 the collar 120 will cause the operating arm 127 to move downward thereby moving the closure valve 125 into engagement with the valve seat 96.

To be certain that the valve 125 will firmly engage the valve seat 96 we provide a member 135 which is made of a resilient material such as spring steel. The member 135 is secured to the housing 86 by screws 136 and is provided with an aperture 137 in which the bar 109 is positioned. Adjacent the lower end of the resilient member 135 we provide a boss 138 which is triangularly shaped in cross section. The end of the operating arm 127 adjacent the closure valve 125 is pointed as indicated at 139.

When the operating arm 127 is moved downward the end 139 thereof engages the boss 138 on theresilientmember 135 andmoves it away from the arm until the point 139 passes the apex of the boss 138, whereupon the resilient member 135 springs towards the operating arm 127. In this position the end 139 of the operating arm 127 engages the underside of the triangular boss 138 which forces the operating arm 127 downward and the closure valve 125 into tight engagement with the valve seat 96.

Secured to each side of the valve 125 by the pin 128 we provide spring fingers 139, one of which resiliently engages the rear wall of the housing 86 and the other of which resiliently engages the cover plate 88. As the operating arm 127 moves upwardly the spring fingers 137 retard the movement of the valve 125 until the end 139 of the operatin;; arm passes the apex of the boss 138 on the resilient member 135, whereupon further movement of the operating arm moves the valve out of engagement with the valve seat. When the operating arm 127 travels toward the valve seat 96 the spring fingers 139 retard the downward movement of the valve 125 so that when the end 139 of the operating arm engages the boss 138 on the resilient member 135 gravity will not cause the valve 125 to engage the valve seat 96. Thus the valve 125 will remain out of engagement with the valve seat until the end 139 of the operating arm passes the apex of the boss 138.

In Fig. 11 we have shown the regulating valve 85 as operatively installed to control the flow of gas to a burner 140 of a hot water heater 142. When the device 85 is thus used the threaded stem 102 is secured to the water container of the hot water heater 142 by threaded engagement therewith and the tube 104 extends into the water container. A pipe 143 extending from a source of gas supply is connected to the device 85 by threaded engagement with the threads 93 of the boss 90 and a pipe 144, which is connected to the device 85 by threaded engagement with the threads 95 of the boss 91, extends to the burner 140.

When the water in the heater 142 is below a predetermined degree of temperature the closure valve 125 is out of engagement with the valve seat 96 thereby allowing a free passage of gas through the device 85 from the inlet aperture 92 to the outlet aperture 94 as shown in Fig. 6.

When the water in the heater 142 reaches a predetermined temperature the heat thereof expands the tube 104 lengthwise, which in turn moves the bar109 in a direction away fromthe chamber 87. As the bar 109 is thus moved it moves the rod 117 with it and the collar 120 moves the operating arm 127 downward and the closure valve 125 into engagement with the valve seat 96 thereby restricting the passage of gas through the device 85 fromv the inlet aperture 92to the outlet aperture 94. i

I When the water in the heater 142 falls below a predetermined temperature the tube 104 contracts lengthwise and moves the bar 109 towards'thechamber 87 As the bar 109 is thus moved the collar 120 moves the operating arm 127 upward and the closure valve 125 out of engagement with the valve seat 96 thereby allowing free passage of gas through the device 85 from the inlet aperture 92 to the outlet aperture 94.

f To adjust the regulator 85 so that a greater amount of heat is required to operate the closure valve to a closed position, the rod 117 is rotated in a direction whereby it will move away from the bar 109 thus causing the bar 109 and the rod 117 to travel a greater distance before the closure valve 125 engages the valve seat 96.

To adjust the regulator 85 so that a less amount of heat is required' to operate the a closure valve to a closed position the rod 117 is rotated. in a direction whereby it moves towards the bar 109 thus moving the closure valve 125 closer to the valve seat 96 whereby it is not necessary for the bar 109 and the rod 117 to travel as great a distance before the closure valve 125 is moved into engagement with the valve seat 96. The collar 120 may also be adjusted if desired. 7

To allow a small quantity of gas to pass through the device 85 to the burner 140 we provide a by-pass around the valve seat to the outlet aperture. This by-pass includes a threaded aperture 145 in the housing 86, the

inner end of which opens into the chamber 87and an aperture 146 which communicates with the threaded aperture 145 and the outlet aperture 94. Positioned" in the threaded aperture 145 we provide a similarly threaded screw 147 which is adapted to act as a metering valve to control the passage of gas through the aperture 146 and for retaining the screw 147 in an adjusted position we pro vide a lock nut 148.

It will thus be seen that when the screw 147 does not obstruct the passageway through the aperture 146 as shown in Fig. 6 and the closure valve 125 restricts the passage of gas throughthe outlet aperture 94 a small quantity of gas will continue to pass through the by- pass apertures 145 and 146 to the outlet aperture 94 and thence through the pipe to the burner 140.

In some instances it may be desirable to have the supply of gas through the device 85 to the burner 140 entirely discontinued when the closure valve 125 engages the valve seat thereby prevent passage of gas through the aperture 146 to the outlet aperture 94.

In some installations where it is not necessary that the closure valve 125 tightly engage the valve seat 96 the resilient member 135 may be omitted.

From the foregoing description it will be apparent that we have provided a novel regulating valve which is simple in construction and highly efficient in operation. IIaving thus described our invention, we claim: L

1. In a regulating valve, a housing, a chamber in said housing, said housing having an inlet aperture and an outlet aperture both communicating with said chamber, a valve seat associated with one of said apertures, a member movably mounted in said chamber, resilient means to urge said member in one direction, means to move said member in an other opposite direction, a valve in said chamber adapted to coact with said valve seat, an operating arm pivotally connected to said valve, said operating arm being pivotally mounted in said housing, said arm having a notch adjacent the end opposite said valve and a collar secured to said member, said collar being positioned in said notch, the sides of said notch being rounded and engaging opposite sides of said collar.

2. In aregulating valve, a housing, a chamber in said housing, said housing having an inlet aperture and an outlet aperture both communicating with said chamber, a valve seat associated with one of said apertures, a

rod, said rod being movably mounted in said chamber, resilient means to urge said rod in one direction, means to move said rod in another opposite direction, a valve in said chamber adapted to coact with said valve seat, an operating armpivotally connected to said valve, said operating arm being pivotally mounted in said housing, Said arm having a notch adjacent the end opposite said valve and a collar adjustably secured to said cess in the opposite end of said housing and a reduced recess communicating with said threadedrecess, a recessed boss and a bore communicating with said boss recess and Opening into said chamber, a diaphragm member in said threaded recess, a nut in said recessv adapted to retain said diaphragm member in position, said nut having a threaded aperture, a bracket in said chamber, said bracket having a bore, a rod, said rod being positioned in said two bores, a head on said rod engaging said diaphragm member, the opposite end of said rod having a recess therein, a holder, said holder including a stem positioned in said rod recess, said holder having a spherical member rotatably mounted therein, a coiled spring, one end of said spring engaging said spherical member and the opposite end of said spring engaging said plug, a valve in said chamber adapted to coact with said valve seat, an operating arm, means tomount said valve on said operating arm, said arm including an enlarged portion at the end opposite said valve, means to pivotally mount said arm, a notch in said enlarged portion, and a collar secured to said rod, said collar being positioned in said notch.

4. In a regulating valve, a housing, said housing having a chamber therein and having an inlet aperture and an outlet aperture com municating with said chamber, a valve seat associated with one of said apertures, a threaded aperture at one end of said housing, a threaded plug in said aperture and a lock nut on said plug, there being a threaded recess in theopposite end of said housing and a reduced recess communicating with said threaded recess, a recessed boss and a bore communicating with said boss recess and opening into said chamber, a diaphragm member in said threaded recess, a nut in said recess adapted to retain said diaphragm member in position, said nut having a threaded aperture, a rod, said rod being positioned in said bore, the end of said rod engaging said diaphragm member, the opposite end of said rod having a recess therein, a holder, said holder including a stem positioned in said rod recess, said holder havinga spherical member rotatably mounted therein, a coiled spring, one end of said spring engaging said spherical member and the opposite end of said spring engaging said plug, a valve in said chamber adapted to coact with said valve seat, an operating arm, means to mount said valve on said operating arm, said arm including an enlarged portion atthe end opposite said valve, means to pivotally mount said arm, a notch in said enlarged portion, and a collar secured to said rod, said collar being positioned in said notch.

5. In aregulating valve, a housing, said housing having a chamber therein and having an inlet aperture and an outlet aperture communicating with said chamber, a valve seat associated with one of said apertures, a threaded aperture at one end of said housing, a threaded plug in said aperture and a lock nut on said plug, there being a threaded re cess in the opposite end of said housing and a reduced recess communicating with said threaded recess, a recessed boss and a bore communicating with said boss recess and opening into said chamber, a diaphragm member in said threaded recess, a nut in said recess adapted to retain said diaphragm member in position, said nut havinga threaded aperture, a bracket in said chamber, said bracket having a bore, a rod, said rod being positioned in said two bores, a head on said rod engaging said diaphragm member, the opposite end of said rod having a recess therein, a holder, said holder including a stem positioned in said rod recess, said holder having a spherical member rotatably mounted therein, a coiled spring, one end of said spring engaging said spherical member and the opposite end of said spring engaging said plug, a valve in said chamber adapted to coa'ctwith said valve seat, said valve having a slot therein, an operating arm, said operating arm being positioned in said slot, said arm being apertured, a pin in said valve positioned in said arm aperture, said arm including an enlarged portion at the end opposite said valve, a stud secured to saidhousing, said enlarged portion being pivotally mounted on said stud, a notch in said enlarged portion being notched, and a collar secured to said rod, said collar being positioned in said notch, the sides of said notch being rounded and engaging opposite sides of said collar, a resilient member secured to said housing in said chamber, a boss on said member, said boss being triangular in cross section, a pointed end on said operating arm adjacent said valve, said pointed end'being adapted to engage said boss on said member and flex said member when said arm is moved, said triangular boss being adapted to engage the upper surface of said operating arm when said valve engages said valve seat and bein adapted to resiliently retain said valve in engagement with said valve seat.

6. In a regulating valve, a housing, said housing having a chamber therein and having an inlet aperture and an outlet aperture communicating with said chamber, a valve seat associated with one of said apertures, a threaded aperture at one end of said housing, a threaded plug in said aperture and a lock nut on said plug, there being a threaded recess in the opposite end of said housing and a reduced recess communicating with said threaded recess, a recessed boss and a bore communicating with said boss recess and opening into said chamber, a diaphragm member in said threaded recess, a nut in said recess adapted to retain said diaphragm member in position, said nut having a threaded aperture, a rod, said rod being positioned in said bore, a packing material in said recessed boss surrounding said rod,

means in said recessed boss surrounding said rod and engaging said packing material, a

threaded aperture in said housing com municating with the interior of said recessed boss and extending to the exterior of said housing, means in said threaded aperture to adjust the pressure on said packing material, the end of said rod engaging said diaphragm member, the opposite end of said rod having a recess therein, a holder, said holder includ ing a stem positioned in said rod recess, said holder having a spherical member rotatably mounted therein, a coiled spring, one end of said spring engaging said spherical member and the opposite end of said spring engaging said plug, a valve in said chamber adapted to coa-ct with said valve seat, an operating arm,

means to mount said valve on said operating arm, said arm including an enlarged portion at the end opposite said valve, means to pivotally mount said arm, a notch in said enlarged portion, and a'co'llar secured to said rod, said collar being positioned in said notch.

7. In a regulating valve, a housing, a

chamber in said housing, said housing having an inlet aperture and an outlet aperture both communicating with said chamber, a valve seat associated with one of said apertures, a member movably mounted in said chamber, a valve in the chamber adapted to coact with said valve seat, an operating arm pivotally connected to said valve, means to pivotally mount said operating arm, said 95 member having a projecting portion thereon,

said arm having a notch therein adjacent the end opposite said valve, said projection being positioned in said notch, the walls of said notch engaging opposite sides of said proj ection.

8. In a regulating valve, a housing, a chamber in said housing, said housing having an inlet aperture and an outlet aperture arranged at opposite sides of said housing, a 4 valve seat associated with one of said apertures, a control member movably mounted in said housing and extending at substantially right angles to the axis of said apertures, resilient means to urge said member in one 59 direction, thermally actuated means to urge the member in a reversedirection, a valve adapted'to eoact with said valve seat, an operating arm engaging said valve and pivotally mounted, and means on said member engaging means on said arm to move the latter under varying thermal conditions. i

In testimony whereof, we hereunto aflix our signatures.

HOWARD H. DOUGLASS.

ARTHUR H. DOUGLASS.

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