US668648A - Automatic valve. - Google Patents

Description

No. 668,646. A Y Pamntedfeb. 26, mol.

w. n. KLIPFEL.

' AUTOMATIC VALVE.

(uludel.)

*ma cams Evans cc.. PHQTQLITHO., wAsHmGToN. D. c,

STATES PATENT OFFICE.

WILLIAM D. KLIPFEL, QF CHICAGO, ILLINOIS.

AUTOMATIC VALVE.

sPECIFIcATioN forming pm of Letters Patent No. 668,648, dated-February 26, 1901.

Application filed April 5 1900.

To all whom it may concern.'

Be it known that I, WILLIAM D. KLIPFEL, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Automatic Valves, of which the following is a speciication.

This invention relates to automatic valves, and particularly to that class known as check-valves, the object of the invention being the production of such a valve embodying the novel features of construction hereinafter described.

In this invention a valve-casing having an inlet-opening and an outlet-opening is provided with a balanced valve capable of closing the passagebetween said inlet and said outlet openings. A spring tends to hold tlie valve-closure against its seat, and a hand- Wheel is provided for iirmly seating the valveclosure when it is desirable to positively close the valve. his valve is particularly adapted for use in connecting a single boiler with the pressure of a number of other boilers. When for any reason the pressure in the sin.- gle boiler falls below the required pressure maintained by the other boilers, the valveclosure, actuated by the difference in piessure, automatically seatsitself and "shuts 'off the singleb'oiler rom theprssu'reofthebattery of'boilers'. If the difference in pressure is due to the disability of the single boiler, the cut-off valve may be firmly seated by means of a handywheel.

In the accompanying drawings, Figure 1 is a vertical central section through a valve embodying the features of my invention. Fig. 2 is an under face view of the valve-closure.

Like letters of reference indicate corresponding parts throughout both views.

In the construction of this valve I provide the valve-casing A, which in this instance is substantially of globular form. Within the valve-casing A are the usual partition-walls A', having the valve seat ring A2 screwthreaded in an opening in said partition-walls.

The valve-casing A is provided with anges A3, by means of which the valve is secured toy the inlet steam-pipe A4 and the outlet steampipe A5, the former communicating with a sin- Serial No. 11,701. (No model.)

gle boiler and the latter with the main steampipe or header of the battery.

B is the bonnet oi' the valve. the usual stuffing-box B and thevalve-actuating rod B2, Vextending through said stuffingbox, upon the lower end of which rod is "cut the left-hand thread B3. This rod lies within a sleeve B4 of rectangular external form, the interior of which sleeve is screw-threaded to correspond with thethreads B3 on the valveactuating "stiimwww B5 is a cylinder having a screw-thread connection with the bonnet B, the curve of the walls of said cylinder being concentric with the central axis of the valve-seat ring A2. A piston C, having the square central opening C, adapted to receive the rectangular sleeve B4, lies within the cylinder B5 and is free to slide longitudinally therein. The piston C is provided with the integral valve-stem C2, having the cylindrical axial opening C5, which is a continuation of the square opening C' in the piston C. The lowerend of this valvestem is internally screw-threaded and adapted to receive the correspondingly -screwthreadedstud C4 of the valve-closure C,5, whereby thepiston C and said valve-closure are held in fixed rela,tion.-The guide-arms C5, extending downward from the lower face of the valve-closure C5, are formed integral with said closure and are intended to guide the closure to its seat A5.

A coil-spring D surrounds the rectangular sleeve B4, extending between the bonnet B and the face of the piston C, and by its pressure tends to thrust the valve-closure C5 against its seatring A2. In practice the spring D is quite light, being but little more than sufficient to move the valve-closure C5 when the valve-stem occupies a horizontal position or a position different from that in which it is represented in the drawings.

The upper part of the bonnet B communicateswith the inlet side of the valve-body A by means of a by-pass E, adapted to be closed by the valve E (of usual construction) therein. This by-pass is to afford a means of communication between the inlet side A4 of the valve and the upper end of the cylinder B5 in order that the presslire in the inlet side may It contains I be exerted upon the upper face of the piston C.

vWith steam-pressure iu both sides of the valve-casing it will be observed that the pressure tending to open the Valve is that within the inlet side exerted upon the lower face of the valve-closure C5, together withlhepressure in theoutletrside ofwthervalv exerted upwardagainstthe*under f aceof thepiStOll C, a'd` that/thepressure tending to force the closure C5 against its seat A2 is/that within the outlet side of the valve-body pressing downward upon the upperfaee of tlcl'sure C5 plusth'e pressure of the steam inthe inlet et'eringthe cylinder B5 through the by-pass E upon the upper face of the piston C, together with the downward pressure of the coil-spring D, which latter, as before stated, is slight. It will thus be seen that the valve hereinbefore described is a balanced valve intended to be interposed between two sources of pressure nearly qnal'..f If the pressure in the inlet A4 becou? lghtly less than that in the outlet A5, mspssure upon the lower side of the closure C5 and of the piston C is overcome by the pressi] re upon the upper side ot saidelosgre and said pistonapdgwithjche forcegof the spiiigpft'assistfthe clqomren is forced against its seat-'ring A2, where it remains until the pressure in the inlet side A4 of the valve is in excess of that in the outlet side A5 thereof. The aggregate area of surface exposed to the pressure tending to open the closure CS-to wit, the area of the under face of the closure C5 plus that of the under face of the piston C is but a little less than the area of the surface upon which the closing pressure is exerted or the upper face of the closure C5 plus that of the upper face of the piston C, but sufficiently greater, so that the valve would operate when placed in the position it is represented to occupy in Fig; l of the drawings Without the spring D. This spring is added to overcome the weight and friction of the closure C5 and the piston C when the valve occupies a position dilerent from that in which it is herein shown.

In use this valve is connected on its inlet side with the steam-pipe from a single boiler and on its outlet side with the main steam-pipe or header from the batteryof boilers. When the steam-pressu re in tliesiiiglewboil/eris su fcien tly greaterthan that in the header, the latter pressure raises said valve from'its seat, and when the steam-pressure in the boiler is less than that in the Vheader the closure'C5 is thrust firmly against its seat by said excess of pressure'in the header. lf the lowering of pressure in the boiler results from an accident to the boiler orits parts, the boiler may be cut otf from the header by turninU the hand-wheel xed to the valve-rod B2 and forcing the rectangular casi ngB4 downward against the stud C4, holding the closure C5 rmly on its seat A2. Some steam will leak around the piston C; but this can be checked by closing the valve E in the by-pass E, and the single boiler will then be completely cut olf from the battery of boilers.

While I have described thisvalve in its use in connection with steam-boilers, it is clear that it may be used in any place where it is desirable to maintain a certain pressure in fluids, or as a reducing-Valve by varying the proportionate areas of the piston C and the valve-closure.

I claim as my inventionl. In a valve, in combination, a valve-casing having an inlet and an outlet opening; a valve-seat; a valve-closure; a cylinder alined with said valve-seat; a valve-stem on said closure, said stem having an opening therein;

' a piston fixed with relation to said valve-stem;

a sleeve adapted to slide within the opening in said valve-stein; a valve-rod having a screwthread connection with said sleeve; and a spring extending between said piston and a portion of the valve-casing.

2. In a valve, in combination, a valve-casing having an inlet and an outlet opening; a valve-seat; a valve-closure; a cylinder alined with said valve-seat; a valve-stem fixed to said closure, which valve-stem has an axial opening therein; a piston for said cylinder, fixed with relation to said valve-stem.; a sleeve adapted to slide Within the axial opening in said valve-stem; a valve-rod having a screwthread connection with said sleeve; and a spring surrounding said sleeve, and extending between said piston and the upper part of said valve-casing.

3. In a valve, in combination, a valve-casing having an inlet and an outlet opening; a valve-seat; a valve-closure; a cylinder alined with said valve-seat; a valve-stem fixed with relation to said closure, which stem has an axial opening therein; a piston for said cylinder, having a central, angular opening coinciding with the axial opening in said valvestem; a sleeve adapted to slide iu the opening in said piston and the axial opening in said valve-stem; a valve-rod having a screwthread connection with said sleeve; a spring surrounding said sleeve, and extending between said piston and a portion of the valvecasing; said Valve-casing being provided with a by-pass opening forming a communication between the interior of said cylinder and the inlet side of the valve-casing; and a closure for said by-pass opening.

4. In a valve, in combination, a valve-casing having an inlet and an outlet opening; a bonnet; a partition dividing the interior of said casing in two parts; a valve-seat in said partition; a valve-closure for said seat, which Valve-closure has guide-arms extending from one of its sides; a valve-stem fixed with relation to said closure, which stem has an axial opening; a piston fixed with relation to said stem, said piston having a central, angular opening coinciding with said axial opening in said stem; a cylinder within which said pis- IOO IIO

ton is adapted to move; a sleeve adapted to being provided with a by-pass opening comslide in said central opening of said piston municating between the interior of said ey]- ro and said axial opening of said valve-stein; a inder and said inlet; and a closure for said valve-rod rotatably'mounted in said bonnet, by-pass opening.

5 which rod has a screw-thread Connection With WILLIAM D. KLIPFEL.

said sleeve; a spring surrounding said sleeve, Witnesses: and extending between said piston and said L. L. MILLER,

bonnet; said bonnet and said valve-easing GEO. S. CHINDAHL.

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