US925812A - Fluid-pressure regulator. - Google Patents

Description

F. L. JAHN.

FLUID PRESSURE REGULATOR.

APPLICATION FILED JAN. 26, 1909.

925,812. Patented June 22,1909.

Mincsses. Inventor.

MU. Frcdcric/(l/Jahn.

' obtain the slight movement whi.

UNITED STATES PATENT OFFICE.

FREDERICK L. JAHN, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO WATSON & McDANIEL COMPANY, OF PHILADELPHIA, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

FLUID-PRESSURE REGULATOR.

Specification of Letters Patent.

Patented June 22, 1909.

exact description of the invention, such aswill enable others skilled in the art to which it apqpertains to make and use the same.

T isinvention relates to improvements in fluid ressure regulating valves wherein large doub e unbalanced valves are, by the use of, com ound levers, controlled by a comparative y small diaphragm, owing to the move- -ment of the diaphra m, by the compounding of the levers, being less than the movement of the valve. Without the compoundin a diaphragm of extremely large and practically pro 'bitive diameter must be employed, to

. ,will not disintegrate the diaphragm, and also destroy its necessary sensitive action. To make the valve attachments free from friction the compound levers are mounted on rollers.

The contained parts are readily removed, from the case without breaking pipe joints,

and the case, owing to the use of the small diaphragm is of convenient size. The valve, owing to lessened friction, is very sensitive to fluctuations upon the initial side, and also equally effective in delivering a uniformly predetermined pressure.

The inventionis illustrated in the accompanyin drawing, the figure being a central vertica section, wherein 1 is the case, 2 the pressure inlet thereto, 3 the outlet and 4 the bottom cover. main valve is formed of an upper art 5 and a lower part 6 connected bya nec 7, part 5 having a removable and renewable seat 8, and asimilar seat 9 being provided for art 6, the seats being secured in a wall 10. megral with parts 5,6, 7 there is a stem 11 with ahead 12 havin a pin 13 securing it to the bifurcated bent ever 14, which has its opposite end carried by a roller 15 on a in 16.

Practically midway of lever 14 t ere is attached a bent lever 17 by a pin 18, with a roller 19 at the outer end of the lever, on a in 20, and at the central line of the valve ever, 17 is connected by a pin 21 to a plate 22 secured. to the high pressure diaphragm 23. Rollers 15, 19 rest upon a seat 24, en-

The

circling case 1, and are vertically secured by a ring 25 under the diaphragm 23, which in turn is secured by a cover 26. The main valve, part 5, opens into a chamber 27 having a removable top 28 freely surrounding. stem- 11, and leaving a slight annular s ace 29 for fluid flowing to the underside of igh pressure diaphragm 23. A spring 30 is seated between top 28 and part 5 of the valve to close the valve when not in use.

At the inletside of the case there is a high pressure passage 31 into cover 26, and a restricted passage 32 into the high pressure chamber 33 over diaphragm 23. Cover 26 has a neck 34 inclosing a low pressure chamber 35 with a seat 36 for the controller valve 37 o ening into the high ressure chamber 33, t e valve being guide in an upwardly extended neck 38 surrounded by a spring 39 controlled by a nut 40 and a washer 41 to normally hold the controller valve 37 closed. An annular passage 42 around the upward extension of valve 37 is in communication wvith the low pressure chamber 35 by an open ing 43. There is also a low ressure passage 44 from chamber 35 to the elivery side 3 of the valve case, with an exterior exit 45 which may be closed or used, according to the service required by the valve.

Mounted above chamber 35 there is a low pressure diaphragm 46 secured by a casing 47 wherein 1s a round faced spring seat 48 carryin a spring 49 with an upper seat 50 control ed by a screw 51 having a lock nut 52, the spring 49 being set by screw 51 to determine the ressure to be delivered from the pressure out et, and a cover 53 incloses screw 51. The part 6 of the valve has rings 54 as guides.

The operation is as follows: High pressure fluid flows in at 2 and into passage 31 and in a restricted degree through passage 32 to the high pressure chamber 33, and as the pres- 1 through passage 32, reducing the pressure which downwardly deflects diaphragm 23 to a less degree than the ressure against art 5 of the valve which W1 then be opene for the passage of a reduced flow to outlet 3, also through annular space 29 under diaphragm' 23, through dpassage 44 to low pressure chamber 35 an against its diaphragm 46. Durin the continuance of an even low pressure delivery, the parts described will remain inactive, but in the event of an excess of low pressure being delivered it will cause low pressure diaphragm 46 to recede, the controller valve 37 to close and high pressure to again accumulate in chamber 33, causing high pressure diaphragm 23 to close valve 5-6 and restrict the pressure delivery. Controller valve 37 is very sensitive in its actions, and its slightest movement is suflicient to instantly regulate the desired degree of low pressure to be delivered, consequent upon the action of the low pressure diaphragm as subjected to an excess or decrease of low pressure.

I claim 1. In a fluid pressure regulator, a case, an inlet and an outlet therefor for fluid flowing, a double seated unbalanced valve controlling the passage from the inlet to the outlet, and seated against the pressure, renewable seats for the valve, lower guiding means for the valve, an up er stem for the valve and means for its ree guidance; a high pressure diaphragm, a system of compound -levers connecting the diaphragm and the valve stem, and whereby the movement of the dia phragm is less in degree than the movement of the valve, a high pressure chamber above the high pressure diaphragm, and a diminu tive high pressure et thereto; a low pressure chamber and a low pressure diaphragm therefor; a controller valve between the high and low pressure chambers, resilient means to depress the low pressure diaphragm and open the controller valve and thereby cause the high pressure diaphragm to open the main valve; and a assage from the outlet to the low pressure 0 amber and the low pres sure diaphragm whereby fluctuations of low .a high pressure inlet and a low pressure outlet, an unbalanced valve intercepting the passage through the case, and formed of an upper disk part and a lower art with guid- 'ing wings; a removable seat or each part; a

stem above the upper part, a free guide therefor, and resilient means to normally close the valve; a high pressure diaphra m and a system of compound levers with re er supports connected to the stem and the diaphragm; a high pressure chamber above the igh pressure dia hragm, and in communica-- tion with the in et; a low pressure chamber and a low pressure diaphragm above the low pressure chamber, with resilient means for the depression of the diaphragm; a passage between the high pressure and the low pres sure chambers, and a controller valve therein with resilient means for its closure; and a passage from the outlet to the low pressure chamber and under its diaphragm whereby fluctuations of low pressure control the -movement of the dia hragm to open and close the controller va ve.

3. In a fluid pressure regulator, in combination, a double seated unbalanced valve, a diaphragm actuated by high pressure, a connection from the valve to the diahragm by which the diaphragm is moved in ess degree than the valve; a low pressure diaphragm, resilient means for its depression, a controller valve located between the high pressure and low pressure dia hragms, opened by the deression of the ow pressure diaphragm and aving resilient means for its closure, and means whereby the low pressure dia hragm is actuated to permit the closing of t e con troller valve upon an excess accumulation of pressure at the delivery side of the valve.

In testimony whereof, I affix my signature, in the presence of two witnesses.

FREDERICK L. JAHN. Witnesses:

RANBOM O. Waicnr, WILLIAM C. SrroEvnn.

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