US1939709A

US1939709A - Dispensing valve

Info

Publication number: US1939709A
Application number: US600479A
Authority: US
Inventors: Edward F Leese
Original assignee: HOWARD S BARGREEN
Current assignee: HOWARD S BARGREEN
Priority date: 1932-03-22
Filing date: 1932-03-22
Publication date: 1933-12-19
Anticipated expiration: 1950-12-19

Description

Dec. 19, 1933. E, F. LEESE 1,939,709

DISPENSING VALVE Filed March 22, 1952 INVENTOR EdwardFLeese 2 TIT- BY l M 0 NEY Patented Dec. 19, 1933 UNITED STATES PATENT OFFICE one-third to Howard S.

Wash.

Bargreen, Everett,

Application March 22, 1932. Serial No. 600,479

7 Claims.

My invention relates to dispensing valves and more particularly to a valve intended to dispense liquids--for instance, coffee from a restaurant coffee urn.

The main object of my invention is to provide a tight dispensing valve which will eliminate dripping of hot or cold liquids.

Another object is to provide a valve of a normal size but doubling its valve surface.

Another object is to provide valve surfaces of suchsize relative to the outlet and of such tight fitting qualities that dripping is eliminated.

A further object is to provide a valve having a common spring serving a double purpose, that is, one end of the spring pressing the valve against its seat while the other end is pressing against packing to prevent leakage between the valve stem and easing.

Another object is to provide a valve of simple construction, yet strong and durable, one which may easily be taken apart for cleaning and repairs.

My invention comprises the novel parts, and the novel combination and arrangement thereof, as shown in the drawing, described in this specification, and as will be pointed out in the appended claims.

Fig'ure 1 is a plan view of the dispensing valve, and Figure 2 is an axial section thereof.

Figure 3 is a vertical section taken on the line 3-3 of Figure 1.

Figures 4 to 6 inclusive are sectional plan views of a modified form of valve, showing it in different positions.

A valve casing 1, preferably cylindrical in shape and closed at its bottom at 10 and open at its top, has an inlet port or passage 11 and an outlet 12 of small diameter relative to the casing and offset from the axis thereof, conveniently formed as a down spout. The 'outlet area may be of the order of one-twentieth the area of the casing bottom. The inlet is threaded at 13 so that the valve casing or the complete valve may be easily and quickly secured upon the device (not shown) to which it may be applied, such as a coffee urn.

Instead of using the bottom of the casing 10 as a valve seat, as it might be used, it is preferable to insert a disc-like valve seat 2, having a passage 20 in registry with the outlet 12. The 'valve seat is held against rotation by a pin 21, fixed in the seat and projecting into a recess 14 in the base of the valve casing, and may be cemented or otherwise secured within the casing, so that, in effect, it becomes the bottom of the casing. The upper surface of the valve seat may be ground or finished in any suitable manner before it is positioned within the casing, and the employment of the separate seat 2 is to facilitate this operation.

Seated upon the valve seat 2 for rotation thereon is a disc-shaped valve body 3, having a passage 30 which will register with the inlet 11 of the casing and with the passage 20 of the valve seat 2, when the valve is in the open position. The underside of the valve body may also be ground to a perfect lit with the valve seat, before being installed Within the casing.

The upper side of the valve body is provided with a central upstanding boss 31, having a slot 7 32 through its axis, in which is received a tongue 40, formed upon the lower end of a valve stem 4. In order that the valve stem may be seated in actual axial alignment with the valve body, a depending reduced stub shaft 42 is seated in an ax'al bore 34 at the bottom of the slot 32.

To enclose the upper end of the open casing and guide the valve stem for axial rotation, a cover 5 may be provided having an axial bore 50 acting as a bearing to support the valve stem, 0 said cover being threaded or otherwise removably secured upon the upper end of said casing. The cover may also be provided with an enlarged axial recess 51, into which the upstanding boss of the valve body projects. The valve stem 4 is provided with a suitable flange 41, positioned within the recess 51.- Packing may be placed between the flange 41 and cover 5 to prevent leakage between the stem 4 and cover. In order to apply pressure upon the valve body, so that the valve body and seat always maintain a tight fit, and at the same time apply constant pressure upon the packing to thereby prevent leakage, a spring 6 may be interposed between the flange 41 and the valve body within the recess 51. A handle 7, secured in position upon the upper end of the valve stem, may be provided to rotate the valve body.

In the modified form of my invention, as illustrated in Figures 4 to 6 inclusive, a rotative' 1 0 valve seat 2 is provided instead of a non-rota tive one as heretofore described. In the modified form I provide a double valve surface, that is, one formed between the valve seat and the bottom of the casing, and another between the valve body and the valve seat. This may conveniently be done by eliminating the pin 21, thereby making the valve seat capable of rotation. In order to rotate the valve seat 2, an

arcuate slot 25 is formed in this valve seat, 110

of a length equal to about 45, into which projects a pin 35 depending from the valve body 3. The pin is so positioned, with respect to the slot, that movement of the valve body for substantially 45 moves the pin from one end of the slot, illustrated in Figure 4, to the other end thereof, indicated in Figure 5. The passage 30 has moved out of alignment with the inlet 11 and passage 20 and outlet 12, thereby closing the passage through the valve body proper. A continued movement of the valve body engages the pin 35 with the end of the slot, thereby moving the valve seat until the valve body has moved another 45, or 90 in all, at which time the valve seat has moved substantially 45, and the passage 20 has moved out of alignment with the outlet 12, as shown in Figure 6. In this view, both the

passages

30 and 20 are out of alignment with respect to each other and to the outlet 12 as well, thereby providing a double valve seat.

To open the valve and position the

passages

30, 20 and 12 in alignment, the valve body movement is reversed. The first 45 of movement of the valve body moves the pin 35 to the other end of the slot 25, with the passages 30 and 15 coming into alignment. The remaining 45 of movement moves the valve body and valve seat, then pinned together and with their passages in alignment, into registry with the outlet 12.

What I claim as my invention is:

1. In a dispensing valve, a cylindrical casing having a inlet connection and a bottom outlet offset from its axis, a valve body within the easing having a passage adapted to register with the inlet and outlet, and to be rotated out of registry therewith, a handle concentric with the casing and valve body, and engageable with the latter by relative axial movement, and a spring bearing upon the top of the valve body, to press the latter to a seat at the bottom of the casing, the bottom outlet being of the order of one-twentieth the area of the casing bottom, and being diametrically remote from the inlet connection.

2. In a dispensing valve, a cylindrical casing having an inlet connection and a bottom outlet oilset from its axis, a non-rotative valve seat which is plane over its entire upper seating surface received within said casing at its bottom and having a passage adapted to register with said casing outlet, a valve body within'the casing having a plane lower surface and having a passage adapted to register with the inlet of the casing and with the outlet of said valve seat, and to be rotated out of registry therewith, a handle concentric with the casing and valve body, and engageable with the latter by relative axial movement, and a spring bearing upon the top of the valve body to press the latter to seat against said valve seat.

3. In a dispensing valve, a cylindrical casing open at its top, having an inlet connection and a plane bottom with an outlet offset from its axis, a valve body within the casing having a plane lower surface and having a passage adapted to register with the inlet and outlet,;and to be rotated out of registry therewith, a cover closing said open end of the casing, a handle received in the cover concentric with the casing and valve body, and engageable with the latter by relative axial movement, and a spring bearing upon the top of the valve body, to press the latter to seat at the bottom of the casing.

4. In a dispensing valve, a cylindrical casing open at its top, having an inlet connection and a bottom outlet offset from its axis, a valve body within the casing having a passage adapted to register with the. inlet and outlet thereof, and adapted to be rotated out of registry therewith, a cover removably secured in the open end of said-casing and having an axial bore, a valve stem received in said bore and engageable with said valve body by relative axial movement, to rotate the same, a flange upon said stem within said bore, packing positioned between said flange and the cover, and a spring interposed between said valve body and stem flange, to press the valve body to a seat at the bottom of the casing and the flange against said packing.

5. In a dispensing valve, a cylindrical casing having an inlet connection and a bottom outlet offset from its axis, a valve seat received within the casing at its bottom and having a passage adapted to register with the casing outlet, a valve body within the casing having a passage adapted to register with the inlet thereof and the outlet of said valve seat, means connecting said valve seat to said valve body for relative rotation, whereby the passage of the valve seat and passage of the valve are moved out of alignment with the outlet in the casing, and with each other, a handle engageable with the valve body to rotate it, and means to press the valve body against said valve seat, and the latter against the bottom of the casing.

6. In a dispensing valve, a cylindrical casing having an inlet connection and a bottom outlet offset from its axis, a valve seat received within and at the bottom of the casing, and having a passage adapted to register with the casing outlet, and having an arcuate slot substantially 45 long, a valve body withiri the casing having a passage adapted to register with the inlet thereof and passage of the valve seat, a pin depending from the valve body and receivable in said valve seat slot, whereby movement of the valve body through approximately 90 advances the valve seat 45, and the valve body passage and the valve seat passage each out of registry with their respective passage and the casing outlet, a han- -dle engageable with the valve body to rotate it, and a spring pressing down upon the top of the valve body to press the latter against the valve seat, and the valve seat against the bottom of the casing. 7. In a dispensing valve, a casing of circular horizontal cross-section having an inlet connection and a bottom outlet ofiset from its vertical axis, a valve body closely fittingwithin the casing and having a passage adapted to register with the inlet and outlet, and to be rotated out of registry therewith upon movement of said valve body through an angle less than 60 degrees,

means to rotate said valve body;v and a spring 7 bearing upon the top of the valve body, to press the latter to a seat at the bottom of the casing. EDWARD F. LEESE.