US2146794A

US2146794A - Ball cock

Info

Publication number: US2146794A
Application number: US224680A
Authority: US
Inventors: Herbert D Clemmons
Original assignee: Scovill Inc
Current assignee: Scovill Inc
Priority date: 1938-08-13
Filing date: 1938-08-13
Publication date: 1939-02-14
Anticipated expiration: 1956-02-14

Description

F eb. 14, 1939.

H. D. CLEMMONS BALL COCK Filed Aug. 13, 1958 INVENTOR.

n m m a @M MNT Z )i m Patented Feb. 14, 1939 lA'rgT OFFICE BALL COCK l Herbert D. Clemmons, Sturgis, Mich., assignor to Scovill Manufacturing Company,

Mich.

Sturgis,

Application August 1s, 1938, serial No. 224,680 1o claims. (c1. 137-104) The main object of this invention is to provide a ball cock or Valve assembly for flushing tanks which effectively overcomes the possibility of back-siphonage of water from the tank into the supply system.

A further object is to provide a structure accomplishing this result which, while efficient, is very quiet in operation, is simple and economical in its parts, and is not likely to become clogged 1o or defective in use.

Further objects pertaining to details and economies of the invention will denitely appear from thepdescription to follow. The invention is dened in the claims.

l5 A structure which embodies the features of the invention is clearly illustrated in the accompanying drawing in which:

Fig. 1 is a side elevation of my improved assembly arranged in operative relation within a 20 ilushing tank, the tank being shown in section.

Fig. 2 is an elevation of the assembly looking from the left of Fig. 1, the tank being sectioned on line 2-2 of Fig. 1.

Fig. 3 is a fragmentary vertical section through 25 the valve casing and valve.

Fig. 4 is a detail section on line 4 4 of Fig. 2.

In the embodiment of the invention illustrated in the accompanying drawing I represents a ushing tank and 2 the supply pipe or riser 30 within the tank which is connected to a suitable water supply. This is mounted, as is customary, upon the bottom of the tank. The supply pipe in the embodiment illustrated terminates in an externally conical tip portion 3, the end of which 35 constitutes a seat for the valve 4 which is reciprocatingly mounted in the valve casing 5 mounted on the pipe 2. l

The oat 6 is operatively connected to the valve but as these operating connections form no 40 part of this invention they are not further described.

The valve casing is provided with a lateral discharge arm 'I having a passage 8 therein. Water is discharged from this passage 8 through therde- 45 livery pipe or conduit which comprises the upright or riser section 9, this section being imperforate, and the downwardly directed spiral section I0, the lower end of which is adjacent the bottom of the tank, as illustrated. This spiral 50 delivery section has a longitudinal slot II on its inner side, the upper end oi the slot being well above the normal level of the water indicated at I2 and well above the top of the overow pipe I3. 'I'he spiral section is joined to the vertical 55 section by the curved portion I4 so that water issuing or delivered through the upright imperforate section is directed downwardly into the spiral section and the centrifugal force of the discharged water holds it against the outer wall of the spiral section preventing its issue through the slot. At the same time air is free to enter through the slot throughout the entire length of the spiral section.

With this arrangement of parts it is impossible for any vacuum that may occur in the supply 10 system to draw water from the tank, and this ls true veven though the system may be subject to alternate pressures and vacuum while the inlet valve is open.

The rell tube I5 is connected to the valve cas- 15 ing at I6. The venting opening II of the discharge conduit I0 is oi such character that it is practically impossible for it to become clogged.

A further advantage of the structure is that it is quiet in operation and hissing noise is reduced to a minimum as the discharge conduit has no restriction therein but is open for free ow of water therethrough from the valve casing,

I have illustrated and described my improvements in an embodiment which I have found highly satisfactory. I have not attempted to illustrate or describe certain modifications or adaptations to other forms of ball cocks as I believe this disclosure will enable those skilled in the art to embody or adapt my invention as may be desired.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a valve assembly for flushing tanks, the combination with a supply pipe, of an inlet valve operatively associated therewith, a valve casing mounted on the supply pipe and having a valve chamber provided with a lateral delivery passage, and a delivery pipe communicating with said passage and having an upright imperforate section terminating in a spiral depending section embracing the valve casing and the supply pipe and having a longitudinal slot extending from said upright portion and disposed on the inner side of the spiral whereby the centrifugal force oi the discharged water acts to prevent the discharged water issuing through the slot.

2. In a valve assembly for flushing tanks, the combination with a supply pipe and an overflow pipe, of an inlet Valve therefor mounted on said supply pipe, a delivery pipe communicating with said valve and comprising an imperforate riser section extending substantially above the top of the overflow pipe and a downwardly drected spiral section embracing the supply pipe and the inlet valve and having a longitudinal slot in its inner side, the upper end of the slot being substantially above the upper end of the overow pipe.

3. In a valve assembly for ushing tanks, the combination with a supply pipe and an overflow pipe, of an inlet valve therefor mounted on saidk supply pipe, a delivery pipe communicating with said valve and comprising an imperforate riser section extending substantially above the top of the overiiow pipe and a downwardly directed spiral section embracing the supply pipe and having a longitudinal slot in its inner side, the upper end of the slot being substantially above the upper end of the overflow pipe.

4. In a valve assembly for flushing tanks, the combination with a supply pipe, of an inlet valve operatively associated therewith, and a delivery pipe for said inlet valve having an upright imperforate section terminating in a spiral depending section having a longitudinal slot extending from said upright portion and disposed on the inner side of the spiral whereby the centrifugal force of the discharged water acts to prevent the Water issuing through the slot.

5. In a valve assembly for flushing tanks, the combination with a supply pipe and an overflow pipe, of an inlet valve, a delivery pipe communieating with said inlet valve and comprising an imperforate riser section extending substantially above the tcp of the overow pipe and a downwardly directed spiral section having a longitudinal slot in its inner side, the upper end of the slot being substantially above the upper end of the overflow pipe.

6. In a valve assembly for ilushing tanks, the

combination with a supply pipe, of an inlet valve, and a downwardly directed delivery conduit for said valve embracing the valve and the supply pipe and having a longitudinal slot on the inner side of the spiral whereby the centrifugal force of the discharged water acts to prevent the water issuing through the slot and air may be admitted thereto, the-upper end of the slot being substantially above the valve.

7. In a valve assembly for ushing tanks, the combination with an inlet valve, of a downwardly directed spiral delivery conduit for said valve having a longitudinal slot in its inner side, the upper end of. the slot being substantially above the valve.

8. In a valve assembly for ushing tanks, the combination with a supply pipe and an Overow pipe, of an inlet valve controlling the delivery from said supply pipe, and a downwardly directed spiral delivery conduit for said valve havl ing a longitudinal slot in its inner side, the upper end of the slot being substantially above the upper end of the overiiow pipe.

9. In a valve assembly for flushing tanks, the combination of an inlet valve, and a downwardly directed delivery conduit for said valve having a longitudinal slot on the inner side of the spiral whereby the centrifugal force of thedischarged water acts toprevent the water' issuing through the slot and air may be admitted thereto.

l 10. In a valve assembly for flushing tanks, the combination with an inlet valve, of a downwardly directed spiral delivery conduit for said valve having a longitudinal slot in its inner side, the upper end of the slot being above the high water level of the tank.

HERBERT D. CLEMMONS.