US1528074A - Pressure regulator - Google Patents

Description

Mgr. 3. 1925.

w. s. RALsToN lPRESSURE REGULATOR Filed o'c. 26, 1922 2 sheetsshet 1 Ill/[lll Mar. 3. 1925. 1,528,074

W. S. RALSTON PRESSURE REGULATOR Filed oct. 2e, 1922 zsR'et's-sheet 2 "j l @im l me-nto@ Patented Mar. 3,` 1925.

UNITEDSTATES PATENT OFFICE.

WILLIAM s. HALSTONOF PITTSBURGH,PENNsYLVANIA AssIGN'oa To THE CHAP- LIN-FULTON MANUFACTURING COMPANY, or PITTSBURGH, PENNSYLVANIA, A

CORPORATION OF PENNSYLVANIA.

' ,PRESSURE REGULATOR.

Application led 0ctoberf26, 1922. Serial No. 597,013.

To all whom t mayv concern.'

`Be it known that I, WILLIAM S. RALsToN, of Pittsburgh, in the county of Allegheny and State of Pennsylvania, havel invented cert-ain Vneur and useful Improvements in Pressure Regulators; and I do hereby declare the following Yto be a full, clear, and exact description of the invention, such as will enable others skilled in the art'to which it appertains tov make, and use the same. p

My invention relates to pressure regulaters for accurately controlli-ng the supply of air, gas, steam, oil, Water Vor other fluids, and is especially designed for the control of oil supply to furnaces. Regulators employed for this purpose are usually of thel diaphragm controlled type and lare actuated by air or steam pressure from a suitable source Which also furnishes an atomizing supply for the fuel feeding pipe of the furnacerin Which the regulator is located Difficulty has heretofore been experienced,

particularly in the early morning, by flooding of the furnace With oil Where the valve y has beenY opened automatically by'an increase A of air or steam pressure on the valve-controlling diaphragm before the oil burner has;

had time to impart suiiicient latent heat into the chamber of the v,furnace or other Ireceptacle to ignite the oi'lafter it has come on a second time. tion is to provide aj'simple and highly efficient device which will be positive in automatically shutting off the oil-supplyto the burners when the air or steam pressure Y on the diaphragm fails and at the same time locking the valve 1n such manner that the oil'cannotbe turned on at the burners W1thout the operator going to the valve and.

opening it by hand, andI also provide a novel instrumentalityWhich is adapted Vto cooperate with the valve stem in a manner to block the valve open to Vpermit fluid being available at the burners before the atomizing supply is turned on, such instrumentality being automatically released upon further opening of the valve when the atomizing supply is turned on.

In the drawings, Figure 1 is ya vertical vsectional view of a back pressure regulator short arm 16 of the lever which extends The object of my invenshown, fluid is made available to the burners before the steam, air or other atomizing supequipped with myv improvements, the valve being shown closed. Figure 2 is a similar view With the valve shown locked in partly openedposition. Figure 3 is a det-ail of vthe cut-out latch.

A valve casing Agis provided with the usual inlet B and outlet C, valve seat D,

`and yalve E. The valves hasa chamber G Within Which is a spring 7,7one end of the spring engaging the head 8 of thevalve 6') stem 9 and the other the valve, this spring cushion permitting slight relative movenient between the stem and valve when the vlatter is seated.l A skeleton frame 10 superposed ,on the valve 4casing supports a.

Weighted lever 12 and a diaphragm casing 13. The stem'14 of thev diaphragm 15 is connected with the stem 9 of the valve, and such stem 111 is slotted to accommodate the slightly beyond the frame 10 in a position to cooperate with a latch 17 which is pivoted at one side of the frame'as at 18. About midway its length the latch is provided With a finger 19y and its lower end is shaped for convenient gripping. Within a recess 2O of the latch is a detent 21 which is swingingly vsupported by the pivot 18. This detent is Weighted so as to normally hang out of the path of the short arml lof the lever. en

Y In the operation of the -device'here'n ply is turned on by manually lifting the Weighted arm 12 and swinging the detent 21 s. into position Where it Will engage the short arm 16 of. the lever thus offsetting the Weight of the latter and holding the valve turned on, with consequent increase of pressure on the diaphragm, the valve E Will be fully opened and the detent 21 will swing Ll l) out oi the path of the lever arm. Upon failure or' pressure on the diaphragm l5, the weighted lever will close the valve, the spring cushion between the head of the valve stem and valve allowing the lever to travel a short distance a'lter the valve is seated belore the latch 17 will automatically move to the point where its linger 19 will lie under the end of the short arm ot the lever, thus elilectively holding the lever against movement with consequent locking of the valve to its seat. So locked, it is manifest, there can be no movement of the valve in the event ot increase 'ot pressure upon the diaphragm, it being necessary to manually lift the latch Afrom its locking position before the valve can be again oocued.

1 claim as my invention:

l. A regulator including a valve and its casing, a stem for said valve, a diaphragm and a weighted lever cooperating each with the other and with said valve for effecting its actuation under pressure on said diaphragm, a latch for engaging said lever to lock it against. movement when the valve is vin closed position, means for holding` said valve in partially opened position against the weight of said lever and whereby said latch will be maintained in ineffective position, such means being automatically moved out of such position when the valve is fully opened to permit said latch to engage the arm of said lever when pressure on the diaphragm fails.

2. A regulator including a valve and its casing, a stem for said valve, a. diaphragm and a weighted lever cooperating each with the other and with said valve for effecting its actuation under pressure on said diaphragm, a superstructure on said valve casing supporting said diaphragm and lever, a latch pivoted on said superstructure for engaging said lever to lock it against movement when the valve is in closed position, means for holding said valve'iii partially opened position against the weight of said lever, such means being automatically moved out oli such position when the valve is 'lfully opened to permit said latch to 'engage the arm ot said lever when pressure on the diaphragm tails.

3. A regulator including` a valve and its casing, a stein for said valve, a diaphragm and a weighted lever cooperating each with the other and with saidV valve for effecting its actuation under pressure on said diaphragm, a superstructure on said valve caf'- ingI supporting said diaphragm' and levei', a latch pivoted on said superstructure for engaging said lever to lock it against movemont when the valve is in closed position, a

rdetent adapted to be moved int-o engagement with said lever to hold said valve in partially opened position, and means Jfor automatically moving such detent out ot such position when the valve is fully opened to permit said latch to engage the arm of said lever when pressure on the diaphragm fails.

l. A regulator including a valve and its casing, a stein for said valve, a diaphragm and al weighted lever cooperating each with the other and with said valve for effecting its actuation under pressure on said diaphragm, a superstructure on said valve casing supporting said diaphragm and lever, a latch pivoted on said superstructure 'for engaging said lever to lock it against movement when the valve is in closed position, a weighted swinging detent adapted to be moved into engagement with said lever to hold said valve in partially opened position, the weight of said detent moving it out of such position when the valve isi'fully opened to permit suoli latch to vengage the arm of said lever when pressure on the diaphragm fails. i

5. A regulator including a valve and its casing, a stem for said valve, a diaphragm and a weighted lever cooperating each with the other and with said valve for eiecting its actuation under pressure on said diaphragm, a superstructure on said valve casing supporting said diaphragmand lever, a latch pivoted on said superstructure for engagingv said lever to loclrit against movement when the valve is in closed position, said latch having a recess, a detent llitting Vwithin the recess of said latch and swingingly mounted on the pivot of the latter,said detent being adapted to be moved into engagement with said lever to hold said' valve in partially opened position and to swing away from such engagement with the lever when the valve is fully opened to permit said latch to engage the arin Vof said Vlever when pressure on the diaphragm fails.

6. A regulator including a valve and its casing, a stem for said valve, a diaphragm and a weighted lever cooperating each with the other and with said valve through its stein for effecting actuation of the valve under pressure on said diaphragm, a resilient connection between said valve and its stein permitting a relative movement between the stem, its diaphragm and lever and the said valve, a latch for engaging said lever when moved relatively to said valve to lock said lever against movement when the `valve is in closed position, means tor holding said valve in partially opened position against the weight of said lever, such means being automatically moved out of such position when the valve is fully opened to permit said latch to engage the arm of said lever when pressure on the diaphragm fails.

7. A regulator including a valve and its casing, a stem for said valve, a diaphragm and a weighted lever cooperating each with the other and with said valve for etecting its actuation under pressure on said diaphragm7 a pivotally mounted latch for engaging said lever to lock it against movement when the valve is in closed position, said latch having a recess, a detent fitting within the recess of said latch and swingingly mounted on the pivot of the latter, said detent being adapted to be moved into engagement With said lever to hold said valve in partially opened position and to swing away from such engagement With the lever when the valve is fully opened to permit said latch to engage the arm of said lever when pressure on the diaphragm fails.

In testimony whereof I have signed this specification.

WILLIAM S. RALSTON.

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