US903913A - Fluid-drawer. - Google Patents

Description

T- G. STRATE'R.

FLUID DRAWER. APPLIo'ATIoN FILED APR. 10,1909.

903 ,91 3 Patented N ov. 17, 1908.

THEODORE G. STRATER, OF WEST TISBURY, MASSACHUSETTS.

FLUID-DRAWER.

Specification of Letters Patent.

Patented Nov. 17, 1908.

Application filed April 10, 1908. Serial No. 426,305.

To all whom Lt may concern:

Be it known that I, THEODORE Gr. STRATER, a citizen of the United States, and resident of lVest Tisbury, county of Dukes, State of Massachusetts, have invented an Improvement in Fluid-Drawers, of which the following description, in connection with the accompanying drawing, is. a specification, like letters on the drawing representing like parts.

This invention relates to apparatus for drawing fluids from barrels, casks or other receptacles, and my invention is more especially designed for double draft 1luiddrawers, wherein two streams of fluid are drawn simultaneously from different receptacles, the one under considerably higher pressure than the other. Such double draft fluid-drawers are utilized when it is desired to put a head or bead on the main body of the fluid drawn into a glass, the fluid under the relatively high pressure being drawn in a small stream while the major portion of the draft is drawn in a large stream from the receptacle under the lower pressure. In such fluid-drawers a single valve is employed, having entrance ports which are arranged to communicate simultaneously with the large and small inlets for the fluid opening into the valve chamber, and it is difficult to pack the valve tightly enough to prevent leakage without making the opening and closing movement of the valve undesirably stiff or hard.

My present invention has for its object the production of novel means whereby the valve may be made perfectly tight without interfering with easy movement thereof, and at the same time the wear-of the valve and adjacent parts is reduced to a minimum.

The various novel features of my invention will be fully described in the subjoined specification and particularly pointed out in the following claims.

Figure 1 is a side elevation of a double draft fluid-drawer embodying one form of my invention, the valve-actuator or handle being shown in closed position; Fig. 2 is a cross-section on the line 22, Fig. 1, looking toward the left; Fig. 3 is a partial section through the casing on the line 3-3, Fig. 1, the valve being shown in elevation and partly broken out; Fig. 4 is a sectional detail on the irregular line 4-4, Fig. 3, but showing the valve open for the discharge of fluid; Figs. 5 and 6 are face views of the packing and the valveseat, respectively, both apertured as will be described.

Referring to Fig. 1 the casing 1 having at its front end a lateral, cylindrical valvechamber 2 provided with a discharge spout or nozzle 3, and the elongated, externally threaded shank 4 provided with large and small draft passages 5 and 6 and extended longitudinally therethrough, may be and are of usual construction in double-draft fluiddrawers, the inlet end of the passage 6 being connected with the usual small tube 7 having a coupling 8 to connect with the receptacle containing the fluid under the higher pressure.

As shown in dotted lines Fig. 3 the draft passages have lateral portions 5X, Gx which open into the inner end of the valve chamber 2 to admit fluid thereto, the outer end of the chamber being shown as externally threaded at 9 to receive a screw-cap 10 which tightly closes the open end of the chamber, and a segmental slot 11 is made in the top of the chamber. The cylindrical valve 12 has, a single outlet port 13 which communicates with large and small entrance openings or ports 14, 15, Fig. 4, the valve being cored out internally to effect communication between said ports, the entrance ports being made in the inner end of the valve while the outlet port 13 is made through its cylindrical wall, to communicate with the nozzle 3 when the valve is opened, as in Fig. 4. At such time the ports 14 and 15 are directly opposite the chamber inlets 5X, 6X, respectively, so that both the high and low pressure fluids will be drawn simultaneously.

The outer end of the valve is herein shown as centrally socketed to receive a bearing ball 16, Fig. 3, which contacts tangentially with the inner, flat face of the closure 10, so that at its outer end the valve is supported firmly yet with a minimum of friction, a species of ball bearing being provided.

In order to provide a firm and smooth wear-resisting seat for the valve at its inner end, while at the same time maintaining it tight enough to prevent leakage I provide a circular valve seat 17, see Fig. 6, preferably made of hard rubber and having a polished surface next the valve, having a large aperture 18 and a very line one, shown at 19, said apertures being positioned similarly to the chamber inlets 5X, 6x. A third aperture 20 near its periphery is adapted to receive a positioning stud 21 fixed in the casing and extended into the valve chamber from its inner end, see Fig. 3. Between the seat 17 and the end of the valve chamber I interpose a relatively soft or yielding packing ldisk 22, made of soft rubber orl other suitable packing material, having an aperture 23 for the stud 21 and fluid-conducting apertures 24, 25, F ig. 5, the apertures being located so as to register with those in the valve seat. The hard valve seat 17 not only affords a firm and smooth support for the inner end of the valve but also, lby its hardness retains the aperture 19 of the proper size, said aperture being in practice made very small, as through it the fluid under high pressure passes to the valve. Manifestly such a small aperture in a soft material would soon be closed by the pressure of the valve, stopping any flow of fluid therethrough. The hard valve seat will not pack the valve against leakage, however, as will be readily understood, and for that purpose the soft packing 22 is used, between the seat 17 and the end of the valve chamber, the aperture 25 being made so large that pressure on the packing will not close it, under any circumstances. The packing also permits the seat to fit flat and tight against the valve, but as the seat is hard and smooth-faced the friction is reduced, even when the closure 10 is set up tight enough to properly compress the packing 22 for preventing leakage, such pressure being transmitted through the central bearing ball 16.

By the arrangement described a perfectly tight value is maintained while the desired ease of movement is retained, and the small aperture in the valve seat for the high-pressure fluid is maintained at the proper area. Obviously this aperture in the seat determines the size of the high-pressure stream when the valve is opened, irrespective of the registering apertures in the packingand the valve, and when worn the seat can be easily renewed.

Actuation of the valve is effected by a handle 26, the stem of which is passed through the slot 11X screwed into the valve, the ends of the slot serving as positive stops for the handle in open or closed position. A segmental cover 27 through which the stem of the handle is passed serves to coverl the slot, the cover moving with the handle and resting upon the external surface of the valve chamber.

I have shown one practical embodiment of my invention herein and the same may be modified in different particulars without departing from the spirit and scope of my invention as set forth in the annexed claims.

Having fully described my invention, what I claim as new and desire to secure by Letters Patent is 1. In a fluid-drawer, a valve chamber having a discharge nozzle and an opening for the fluid to enter, a valve movable in the Vchamber and having communicating entrance and outlet ports, a hard seat for the inner end of the valve and apertured to register vwith the entrance port thereof when the valve is open, a yielding packing intel'- posed between the seat and the inner end of thechamber and also apertured for the passage of fluid, the aperture in the packing being larger than the aperture in the hard seat, to prevent closing of the first-named aperture when the packing is compressed, a closure for the outer end of said chamber, and an adjustable anti-friction bearing between the adjacent end of the valve and the closure.

2. In a fluid-drawer, a-cylindrical valvechamber having a fluid inlet at one end, a valve angularly movable in the chamber and having a fluid passage, a yieldingly-sustained seat for the inner end of the valve, a central ball bearing for the outer end of the valve, and means to adjust the pressure on the valve and maintain the inner end thereof fluid tight.

3. In a fluid-drawer, a cylindrical valvechamber having a fluid inlet at one end, a valve angularly movable in the chamber and having a fluid passage, a seat for the inner end of the valve, a combined packing and yielding support for the seat, a central bearing for the outer end of the valve, and means to adjust the pressure between the seat and the support.

l. In a fluid-drawer, a cylindrical valvechamber having large and small inlets at one end, a valve angularly movable in the chamber and provided with a fluid passage and entrance ports to register at times with said inlets, a yielding packing disk adjacent the inlet end of the chamber and apertured to correspond with the apertures of the valveseat, the aperture opposite the small aperture in the seat being made considerably larger than said latter aperture, a hard disklike seat interposed between said packing and the inner end of the valve and having large and small apertures for the passage of fluid and controlling the size of the stream, means to retain the seat and packing from angular movement, and an adjustable bearing forthe outer end of the valve.

5. In a fluid-drawer, a cylindrical valvechamber having large. and small inlets at one end, a valve angularly movable in the chamber and provided with a fluid passage and entrance ports to register at times with said inlets, a correspondingly apertured packing disk adjacent the inlet end of the chamber, a hard disk-like seat interposed between said packing and the inner end of the valve and having apertures for the passage of fluid, means to retain the seat and packing from angular movement, a centrally located bearing ball in the outer end of the valve, and a 90eme closure adjustably mounted on the outer end of the chamber and tangentially contacting With the ball.

6. In a fluid-drawer, a cylindrical valvechamber having a fluid-inlet at one end, a valve angularly movable in the chamber and having a fluid passage, a flat, smooth-faced seat for the inner end of the valve, and a yielding packing interposed between the end of the chamber and the seat, the latter and the packing being apertured for the passage of fluid, combined with a central spherical bearing for the outer end of the valve.

7. In a fluiddrawer, a cylindrical valvechamber having a fluid-inlet at one end, a valve angularly movable in the chamber and having a iiuid passage, a flat, smooth-faced seat for the inner end of the valve, and a THEODORE Gr. STRATER.

lVitnesses JOHN C. EDWARDS, THOMAS J. DRUMMOND.

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