US1032470A - Fluid-pressure valve. - Google Patents

Description

F. S. DENNEEN & J. R. BROWN. FLUID PRESSURE VALVE.

APPLICATION FILED AUG. 27, 1910. LUQAYO.

Patented July 16, 1912.

,z3 /7 ,Muulumlun uNrEp STATES PATENT OFFICE.

FRANCIS S. DENNEEN AND JOHN ROWLAND IBRO'W, OF MANSFIELJQ,

OHIO, ASSIGNOBS TO THE OHIO BRASS COMPANY, OF MANASFIELD, OHIO, A.CORE,()IR,AI`.IONy OF NEW JERSEY.

FLUID-PRESSURE VALVE.

Speeincation of Letters lfatent.

Application med august 2v, 191'0. serial No. :usarlav To all whom 'it may concern.:

Beit known. that we, FRANCIS S. DEN- NEEN and Jol-IN R.' BROWN, citizens ofthe United States, and both residing at Mansfield, in the county of Richland and- State of Ohio, have invented cert-ain new and useful Improvements in Fluid-Pressure Valves, of which thevfollowing is a specification.

This invention relates to fluid pressure valves, and has for its primary object to provide a valve of improved construction, combination and arrangement of parts which shall be durable and eilicient in action, and by means of which the valve can be made susceptible to a light pressure on the valve' stem without the loss of pressure fluid medium around the valve stem.

One of the objects of the present invention is to provide an improved construction, combination and arrangement of parts in valve operating mechanisms for devices of this nature.

Another object is to provide an improved valve operating lever and improved means for mounting the same.

Other and further objects will appear in the specification and be more specifically pointed out in the appended claims, reference being had to the accompanying drawings exemplifying the invention, and inv which- Figure 1 is a cross section of a sander valve constructed in accordance with the principles of this invention. Fig. 2 is a similar cross section of a whistle valve constructed in accordance with the principles of this invention. Fig. 3 is a top plan view of an engineers valve with two valves constructed 1n accordance with t-he principles of this invention coperatively arranged therewith.

Referring more specifically to the drawings, and first of all to the embodiment shown in Fig. 1, a valve body 1 of well own construction comprises an inlet opening 2 and an outlet opening 3, with a valve seat 4 operatably related to which is a valve 5 on a valve stem 6, said valve stem being provided with an extension '7 below, reciprocably supported by a cap 8, which is threaded into an opening in the valve body or housing 1. Extending around the portion 7 of the valve stem is a spiral spring 9, which coperates with the pressure of the iuid entering through the inlet 2, to hold the valve 5 to .of the valve body is provided a valve stem its seat In the upper wall opening through which the valve stem 6 roJ'ects, said opening being suiliciently arge to permit the valve stem to slide freely -therethrough. Said body ortion or housing 1 of the valve is provi ed above with a socket constituted by an annular threaded flange 10 surrounding the outer end ofthe valve s tem.6. Seated within-this socket is a flexible .diaphragm 11 of any suitable materlal, said diaphragm being Iimperforate and fluid tight, and preferably resting at its center upon the upper end of the valve stem 6. In order to clamp said diaphragm 11 about its edges within the socket 10, a plug or diaphragm nut 12 provided with an enlargement 13 seats upon the diaphragm 11, the outer peripheral edge of the enlarged portion 13 being threaded to engage the threaded socket partments, one above and the other below said diaphragm. The plug 12 is provided with a central axial opening within which is reciprocably mounted a plunger or diaphragm stem 14 provided below with an enlargement or head 15, which preferably rests directly upon the diaphragm 1l. The central aperture in the diaphragm nut 12 is made of sullicient size to permit the plunger or diaphragm stem 14 to reciprocate freely therein, neither the valve stem 6, nor the diaphragm stem 14 being packed. Said stems are therefore mounted in such a manner that they are easily reciprocated by a comparatively light pressure. Ordinarily, considerable leakage would occur around the valve stem, and in order to make it possible to use a construction of this kind without the attendant loss of fluid pressure, the diaphragm 11 is provided, which forms a fluid tight closure for the opening in the upper wall of the valve housing.

In order to provide means ,for reciprocating the plunger 14 for operating the valve stem 6, the operating lever 16 is pivotally mounted about a pin 17 supported between two parallel cheeks or lugs 18. The lugs 18 are preferably integral with a collar 19'1'0- tatably mounted upon the upper cylindrical portion of the diaphragm nut 12, said collar being provided on. one side with a protuberant portion 20 within which is threaded a grub or other screw 21. The grub 21 is 10, thus providing .a.dia' phragm-conta1n1ng chamber with two comprovided with a pointed end to adapt it to engage a V-shap'ed groove 2.2 extendmg c1reumterentially around the upper portion of the plug 12. Said grub 21 may be tightened and loosened to hold the collar fixed in any position to which it may be 'adjusted upon said plug 1Q. ln order to make the operating lever 16 removable, it is provided at its pivoted end with a slot 23 extending to the edge of said lever to permit it to be passed into and out of engagement with the pivot 17. From an inspection of Fig. 1, it will be. seen that the plunger 14 projects above the upper surface of the\plug 12. The lever 16 impinges upon the plu ger 14, for which purpose it is provided w th a flat portion 24, which flat portion, after the lever 16 has been depressed sufliciently to open the valve rests upon a protuberance or lug 25 to limit the downward movement of said lever. Said lug 25 preferably forms an integral portion of the collar 19. The. lever 16 is provided on its outer swinging end with a finger hold 26, the valve 5 therefor being operable anywhere within a radius equal to the length of the lever 16 from the axis of the valve stem 6.

Referring now to Fig. 2, which illustrates the application of the invention to a whistle valve, all the parts are of exactly similar construction with the exception ot the .operating lever 27, which in this embodiment comprises a short lever pivoted at 28 adjacent one end and provided with an eye 29 at its outer swinging end for the attachment of a.. draw cord 30. Adjacent the inner end said lever is provided with an oiiset lug 31, which impinges directly -upon the dia phragm plunger 14:.

It is, oftentimes desirable to have devices of this nature for controlling the deposit of sand on the track, and the sounding of the whistle or alarm within easy reach of whichever hand the engineer may employ to loperate the engineers valve. For this purpose two valves constructed similarly' to that shown in Fig. 1 of the drawings may be connected to the same air supply, and by means of the rotatably adjustable handles 38 and 39, which may be set in any desired relation to the handle of the engineers valve, be employed to operate either the sander or the whistle. This arrangement is shown diagrammatically in-Fig. 3, in which the common air supply pipe is indicated at 32, being provided with a T 33. Connected in branch pipes 34, 35 are valves 36, 3T, the operating levers 38, 39 of which may be revolved in the manner already described to bring the finger holds 40, 41 adjacent to t-he operating lever 42 of the engineers valve.

lVhile the sander valve is usually placed within easy reach of the engineers valve handle, it may, of course, be installed at any other convenient point in the car, the most important features yof this valveV being the non-leaking easy valve action, and the adjustable arrangement of the handle with respect to the valve body. Heretofore, much trouble has been experienced with whistle and sander valves because of the leakage around the valve stem when the valve is operating. If packing is used around this stem to prevent leakage, the valve spring which causes the valve to close must be amply strong to overcome the resistance of the packing, so that this combination of cir-- cumstances would make the valve too hard to operate satisfactorily with thumb pressure.

What I claim is:

1. The combination of a valve housing provided with a valve chamber and a diaphragm containing chamber, a valve and valvestem movably mounted in said valve chamber, the valve stem projecting into the diaphragm chamber, a diaphragm against which the valve stem presses, a nut to close the diaphragm chamber and to bind the ydiaphragm periphery against the valve housing, saidnut being formed with aprojection, a plunger stem extending through the said nut and bearing against the diaphragm, a lever sea-ted in said projection and adapted to bear against the said plunger stem to open the valve.

2. The combination of a valve housing provided with a valve chamber and a diaphragm containing chamber, a valve and valve stem movably mounted in the said valve chamber, the valve stem projecting into the diaphragm chamber, a diaphragm pressing against the valve stem, a nut to close the diaphragm chamber and to bind the diaphragm against thervalve housing, the nut being formed with a laterally grooved projecting portion, a plunger stem extending through the nut and bearing against the diaphragm, a collar mounted upon the projecting portion of the said nut,

means to secure the collar to said projecting portion, and a lever pivoted on the collar, the outer end of the plunger stem bearing against the lever and the lever being operable in conjunction therewith to open the valve.

3. The combination of a valve housing provided with a valve chamber and a diaphragm containing chamber, a valve and valvestem movably mounted in said valve chamber, the valve stem projecting into the. diaphragm chamber, a diaphragm pressing against the valve stem, a nut to close the diaphragm chamber and to bind the diaphragm against the valve housing, the nut being formed with a laterally grooved projecting portion, a collar formed with proje'cting lugs and movable about the said grooved portion, means to bind the collar to the said grooved member, a plunger stem extending through the nut, one end bearing upon the diaphragm and the other end projeeting from the nut and a lever pivoted in the said projecting lugs, the lever bearing against the projecting end of the plunger stem to open the valve.

4. The combination of a valve housing provided with a valve chamber and a diaphragm containing chamber, a valve and valve stem movably mounted in said valve chamber, the valve st'ern projecting into the diaphragm chamber, a diaphragm pressing against the valve stem, a nut to close the diaphragm chamber and to bind the diaphragm against the valve housing, an adjustable collar formed with projecting lugs on opposite sides and adjustably mounted on the said nut, a plunger stem extending through the nut, and a lever pivoted in the projecting lugs at one side of the collar, adapted to engage the stem, and engaged by the projecting lug at the opposite side of the collar to stop the lever in the operation of opening the valve..

5. The combination of a valve housing provided with a valve chamber and a diaphragm containing chamber, a valve seat arranged longitudinally of the housing7 a diaphragm and means to secure the same in the diaphragm chamber, a cap member opposite the diaphragm chamber in the housing formed with a cylindrical opening, a valve stem, one end of which is movably mounted in the said cylindrical cap and the other end extends through the housing to engage the diaphragm, a. valve on the valve stem to engage the valve seat and to stop the stem from distending the diaphragm, and resilient means to press the valve in engagement with the valve seat.

6. The combination of a valve housing provided with a valve chamber and a diaphragm containing chamber, a valve seat arranged longitudinally of the housing, a diaphragm and means to secure the same in the diaphragm chamber, a removable cap member formed with an inner recess in alinement with the valve opening, a valve stem one end of which is movably seated in said recess and the other end of which extends through the valve opening and the housing wall into the diaphragm chamber, a valve mounted on the stem to close the valveopening, means to open the valve, and a spring engaging the valve and the recessed cap to close the valve opening.

In testimony whereof we have signed our names to this specification, in the presence of two subscribing Witnesses, on this seventeenth day of August A. D. 1910.

FRANCIS S. DENNEEN. JOHN ROWLAND BROVN. Witnesses for Denneen: M. J. ODoNoGHUE, C. C. CRoss. Witnesses for Brown: J. C. PAINTER, G. L. BUGHAN.

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