CA1102501A - Toilet tank with integral inlet valve - Google Patents
Toilet tank with integral inlet valveInfo
- Publication number
- CA1102501A CA1102501A CA330,048A CA330048A CA1102501A CA 1102501 A CA1102501 A CA 1102501A CA 330048 A CA330048 A CA 330048A CA 1102501 A CA1102501 A CA 1102501A
- Authority
- CA
- Canada
- Prior art keywords
- tank
- duct
- water
- bore
- cap
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Landscapes
- Sanitary Device For Flush Toilet (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A tank for use with toilets which includes both an inlet duct and an overflow duct integrally formed in a wall of the tank and in which the mouth to the overflow duct is situated at a level below that of the upper end of the inlet duct. The inlet duct terminates at its upper end in an inlet valve which includes a conical protuberance with a center bore. A cap and seal centered on a stem which is received in the bore, act under the influence of a float to shut off water flow through the inlet duct. The overflow duct intersects a passage through which flushing water is discharged from the tank into the toilet.
The predetermined location of the mouth of the overflow duct below the level of the upper end of the inlet duct prevents siphon back through the inlet duct, while at the same time allowing a proper level to be set for water in the tank.
A tank for use with toilets which includes both an inlet duct and an overflow duct integrally formed in a wall of the tank and in which the mouth to the overflow duct is situated at a level below that of the upper end of the inlet duct. The inlet duct terminates at its upper end in an inlet valve which includes a conical protuberance with a center bore. A cap and seal centered on a stem which is received in the bore, act under the influence of a float to shut off water flow through the inlet duct. The overflow duct intersects a passage through which flushing water is discharged from the tank into the toilet.
The predetermined location of the mouth of the overflow duct below the level of the upper end of the inlet duct prevents siphon back through the inlet duct, while at the same time allowing a proper level to be set for water in the tank.
Description
'''` ~10~5~
This invention relates to improvements in toilet tanks and flushing water supply assemblies for toilets.
At the present time there are a large number of toilets on the market having different features dependent upon their cost. All however, have in common, regardless of price, the fact that the storage tank has fittings or valves which are used for water supply and discharge, these fittings being connected to the tank as attachments made of plastic, or metal such as bronze, aluminum, etc. The~e attachments frequently result in imperfect or faulty assembly and bring with attendant break down and water leak or wastage. Some of such leaks are individually small but overall can represent a very considerable waste of filtered purified water which is becoming an increasingly scarce and valuable element. A wide variety of such flttings are on the market and many do not fulfill their specific functions as effectively as desirable, and in many cases change the characteristics of the tank when they are installed or replaced. At the time oP replacement, for instance, the overflow may become located at a higher level than the inlet valve, thus preventing the anti-siphoning function required and at best preventing the toilet from worklng as eficiently as originally designed. If the overflow i9 too low water may be contlnuou~ly lost through drainage.
As i8 well known, when the potable or drinking water supply in a city becomes interrupted through mains breakage~pump failure or the llke, there 18 the possibility that a vacuum may be created in the supply line whlch can cause a siphoning suck-back action if an outlet from such line is immersed in a body of water which lt is feeding. This can result in mixing of stagnant ant drinking water with consequent pollution of the supply.
Another disadvantage in conventional tanks is that they require several fixtures forming the pipes for the correct handling of the water, and to these : 3 -,:
- -- : - : : : .
- . :: -: : : . . . : . . . ' .
11~25~
there are generally added several elements to complete each mechanism, such as bolts, valves,-levers, etc. This implies the existence of many parts which do not always work efficiently after a certain period of use and when made of metal are usually subject to corrosion.
It is an obiect of the present invention to overcome the difficulties of the prior art to reduce the number of fittings required in toilet tanks, while at the same time producing more efficient, ~afe and effective operation.
More particularly, in accordance with the invention there is provided a toilet tank including a discharge passage for fl~shing water from said tank w~ich comprises;
an inlet duct integraIly formed in a wall of said tank and terminating at its upper end at a predetermined level in an inlet valve, an overflow duct integrally formed in a wall of said tank and leading to said discharge passage for discharge of overflow water through said overflow duct into said passage, a mouth defined on said overflow duct for receiving said overflow water from said tank situated at a predetermined level below that of said upper end of said inlet duct, said inlet valve comprislng a conical protuberance formed integrally with the upper end of said inlet duct, said protuberance having a centre bore defined therein co~municating with the interior of said inlet duct for inlet water flow through said bore, a stem receivet in said bore and a cap on said stem, and sealing means carried around the upper end of said stem adjacent said cap for sealing water flow from said bore upon downward movement of said c~p and said stem into said bore. The overflow duct may be integrally formed with the base of the tank across which it passes to intersect the discharge passage.
The inlet duct may diverge at its upper end to include a conical protuberance ~'2 -.
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.
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with a center bore communicating with the inlet duct, with a stem received in the bore and a cap on the stem. A seal means is carried round the stem for sealing waterflow through said bore upon downward movement of the cap and stem into the bore. The cap may be com~ected to an arm carrying a float with the arm pivoting in an ear on the inlet valve, and a threaded adjustment means between the arm and the cap for vertical adjustment of the arm with respect to the cap and stem. There may be a catchment space defined integrally with the upper end of the inlet duct surrounding the protuberance for collecting make up water to be supplied to the toilet bowl trap by introduction into the discharge passage.
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, ', , ' ' '. ' , :' . - , , ~ , Specific embodiments of the invention will now be descrlbed ha~ing reference to the accompanying drawings in which;~
Figure 1 shows a front sectional view of a novel tank with inlet valve, Figure 2 illustrates an enlarged sectional view of the valve of Figure 1 in open position, Figure 3 shows a section of the valve of Figure 1 in closed position,, and Figure 4 shows an end sectional view of the tank on line IV-IV of Figure 1.
~ As seen in the drawings, a tank 14 includes two ducts integrally formed with its walls. A first duct 23 leads from the base of the tank, where it i8 connected to a water inlet llne at 19 by means of an attached threaded piece 18, through a right angle bend up an end face of the tank, to end at a point near the top of the tank at 15. The section at 15 diverges slightly and actually constitutes the body of an inlet valve for controlling the flow of , water into the tank. The valve is formed with a conical protuberance or pro~ection 1 with a centre bore 2 which communicates with the interior of the ; duct 23 and through which water flows into the tank. The orifice at the upper `~ qnd of bore 2 is closed when the tank is full by a hemi~pherlcal cap or bell 5r , ;; ~ which is provided with a centrally located backing or support 4 and a seal , washer or packing30f rubber or other suitable ~ealing material. A guide stem 10 depends froD the support 4 and is received in bore 2. This serves to locate the cap or bell 5, and hence the seal 3,precisely over the orifice and to guide its :, , , vertical movement. The movement of the ~tem also prevents the accumulation of incrustatlons or other particles on the walls of the bore 2, so that it remains completely clean at all times, and permits water always to flow without risk of pluyging ~ince it is cleaned automatically with every movement of~the cap 5 and . , .
~ 3 ~
~:: :~ ' guide 10.
The body of valve 15 has on its side facing the center of the tank a spigot 13 connected to a catchment space 12 surrounding the protuberance 1 and to which spigot, the water pipe for supplying make up water for the toilet bowl may be connected to seal the trap in the bowl. Such pipe can be connected to discharge into upper opening 22 of duct 17where the waterthence f~ows into the bowl. An ear 9 is located directly above the spigot 13, the ear having a bore receiving a lever or actuating arm 7. The arm is attached to the ear by a pin 8 in such a way that it has a rocking movement in the ear with its travel being limited in one direction by its connection with cap 5 which covers the outlet orifice of the valve, and in the opposite direction by engagement with the walls of the bore in the ear. The end of the lever or actuating arm 7 is connected to a rod or bar 11 to the opposite end of which is in turn connected a float or air chamber 16. In this way, when the tank is empty, descent of the float will cause the cap or bell 5, seal 3 and stem 10 to lift (assised by water pressure) so that water is smoothly discharged into the tank. The cap or bell 5 distri-butes the water uniformly circularly downward thus preventing splash and possible consequence of water seepage around the upper cover of the tank.
When the water reaches the desired normal full level, float 16 causes the lever or actuating arm 7 to press down on the cap or bell 5, so that the seal 3 presses against the shoulder of inlet orifice 2, cutting off the water flow. When the tank contents are again discharged the cycle repeats connection betwèen lever or actuating arm 7 and valve cap 5 can be adjusted by means of a screw 6 carried on the arm which allows the shut off level of water in the tank to be varied as required.
; On one of the tank faces there is also a vertical duct 17 which is built ~ into the tank forming an integral part thereof and made of the same material, ;~ with its upper mouth or opening 22 located at a level below that of ': .. , :~ _ 4 _ ' '' ' ~ ' "' '',' ' ' '' '' ' .. '' ' '': . ; ", ' ~ , ', ' "
- ' :, ~ ~ , .' ' ' ' ' ' ' ' " ' ., ,: ' , ,,, - ' ' ,, 1~25~ ~
supply or inlet duct 2. The duct 17 turns through 90 at the tank bottom along which it continues and intersects at 20 the vertical wall 21 of the flush dis-charge orifice housing of the toilet tank, so that communication with the toilet bowl always exists, whether the discharge orifice is open or closed.
The purpose of this arrangemént is that the height of the entry to the overflow duct or pipe is pre-set to optimum and cann~t be varled. If water is admitted to the tank so that the set level to which the tank shoulia fill is exceeded due to some deficiency in the closing of inlet valve, any excess of water drains directly to the toilet bowl through the flush dlscharge passage below the discharge orifice. Because the upper end 22 of the inlet duèt 23 is higher than upper opening 22 of duct 17 there is no danger of siphon back to the water supply mains should the pres~ure there fail. Since the height of mouth 22 is predetermined and can not be changed there i8 no danger of this being placed too low during repair of the tank, whereby water could wastefully drain away through setting of the "full" level of the tank being above the upper end of the overflow member.
The flush discharge orifice valve assembly and actuating means ia conventional and is not here described.
- , . ~ . .
.
This invention relates to improvements in toilet tanks and flushing water supply assemblies for toilets.
At the present time there are a large number of toilets on the market having different features dependent upon their cost. All however, have in common, regardless of price, the fact that the storage tank has fittings or valves which are used for water supply and discharge, these fittings being connected to the tank as attachments made of plastic, or metal such as bronze, aluminum, etc. The~e attachments frequently result in imperfect or faulty assembly and bring with attendant break down and water leak or wastage. Some of such leaks are individually small but overall can represent a very considerable waste of filtered purified water which is becoming an increasingly scarce and valuable element. A wide variety of such flttings are on the market and many do not fulfill their specific functions as effectively as desirable, and in many cases change the characteristics of the tank when they are installed or replaced. At the time oP replacement, for instance, the overflow may become located at a higher level than the inlet valve, thus preventing the anti-siphoning function required and at best preventing the toilet from worklng as eficiently as originally designed. If the overflow i9 too low water may be contlnuou~ly lost through drainage.
As i8 well known, when the potable or drinking water supply in a city becomes interrupted through mains breakage~pump failure or the llke, there 18 the possibility that a vacuum may be created in the supply line whlch can cause a siphoning suck-back action if an outlet from such line is immersed in a body of water which lt is feeding. This can result in mixing of stagnant ant drinking water with consequent pollution of the supply.
Another disadvantage in conventional tanks is that they require several fixtures forming the pipes for the correct handling of the water, and to these : 3 -,:
- -- : - : : : .
- . :: -: : : . . . : . . . ' .
11~25~
there are generally added several elements to complete each mechanism, such as bolts, valves,-levers, etc. This implies the existence of many parts which do not always work efficiently after a certain period of use and when made of metal are usually subject to corrosion.
It is an obiect of the present invention to overcome the difficulties of the prior art to reduce the number of fittings required in toilet tanks, while at the same time producing more efficient, ~afe and effective operation.
More particularly, in accordance with the invention there is provided a toilet tank including a discharge passage for fl~shing water from said tank w~ich comprises;
an inlet duct integraIly formed in a wall of said tank and terminating at its upper end at a predetermined level in an inlet valve, an overflow duct integrally formed in a wall of said tank and leading to said discharge passage for discharge of overflow water through said overflow duct into said passage, a mouth defined on said overflow duct for receiving said overflow water from said tank situated at a predetermined level below that of said upper end of said inlet duct, said inlet valve comprislng a conical protuberance formed integrally with the upper end of said inlet duct, said protuberance having a centre bore defined therein co~municating with the interior of said inlet duct for inlet water flow through said bore, a stem receivet in said bore and a cap on said stem, and sealing means carried around the upper end of said stem adjacent said cap for sealing water flow from said bore upon downward movement of said c~p and said stem into said bore. The overflow duct may be integrally formed with the base of the tank across which it passes to intersect the discharge passage.
The inlet duct may diverge at its upper end to include a conical protuberance ~'2 -.
." , , ,. ~ , ..,: ' , .
.
- : , . , ~
. ., - ~ .
:: , . , ' ~ . , :
, . - , ,~
with a center bore communicating with the inlet duct, with a stem received in the bore and a cap on the stem. A seal means is carried round the stem for sealing waterflow through said bore upon downward movement of the cap and stem into the bore. The cap may be com~ected to an arm carrying a float with the arm pivoting in an ear on the inlet valve, and a threaded adjustment means between the arm and the cap for vertical adjustment of the arm with respect to the cap and stem. There may be a catchment space defined integrally with the upper end of the inlet duct surrounding the protuberance for collecting make up water to be supplied to the toilet bowl trap by introduction into the discharge passage.
~' ,.
; , ~ , , '' ' ' ' ' ' .
.
. ~ . .
2a -' ;~ , ' .,~ ~ ; .
, ', , ' ' '. ' , :' . - , , ~ , Specific embodiments of the invention will now be descrlbed ha~ing reference to the accompanying drawings in which;~
Figure 1 shows a front sectional view of a novel tank with inlet valve, Figure 2 illustrates an enlarged sectional view of the valve of Figure 1 in open position, Figure 3 shows a section of the valve of Figure 1 in closed position,, and Figure 4 shows an end sectional view of the tank on line IV-IV of Figure 1.
~ As seen in the drawings, a tank 14 includes two ducts integrally formed with its walls. A first duct 23 leads from the base of the tank, where it i8 connected to a water inlet llne at 19 by means of an attached threaded piece 18, through a right angle bend up an end face of the tank, to end at a point near the top of the tank at 15. The section at 15 diverges slightly and actually constitutes the body of an inlet valve for controlling the flow of , water into the tank. The valve is formed with a conical protuberance or pro~ection 1 with a centre bore 2 which communicates with the interior of the ; duct 23 and through which water flows into the tank. The orifice at the upper `~ qnd of bore 2 is closed when the tank is full by a hemi~pherlcal cap or bell 5r , ;; ~ which is provided with a centrally located backing or support 4 and a seal , washer or packing30f rubber or other suitable ~ealing material. A guide stem 10 depends froD the support 4 and is received in bore 2. This serves to locate the cap or bell 5, and hence the seal 3,precisely over the orifice and to guide its :, , , vertical movement. The movement of the ~tem also prevents the accumulation of incrustatlons or other particles on the walls of the bore 2, so that it remains completely clean at all times, and permits water always to flow without risk of pluyging ~ince it is cleaned automatically with every movement of~the cap 5 and . , .
~ 3 ~
~:: :~ ' guide 10.
The body of valve 15 has on its side facing the center of the tank a spigot 13 connected to a catchment space 12 surrounding the protuberance 1 and to which spigot, the water pipe for supplying make up water for the toilet bowl may be connected to seal the trap in the bowl. Such pipe can be connected to discharge into upper opening 22 of duct 17where the waterthence f~ows into the bowl. An ear 9 is located directly above the spigot 13, the ear having a bore receiving a lever or actuating arm 7. The arm is attached to the ear by a pin 8 in such a way that it has a rocking movement in the ear with its travel being limited in one direction by its connection with cap 5 which covers the outlet orifice of the valve, and in the opposite direction by engagement with the walls of the bore in the ear. The end of the lever or actuating arm 7 is connected to a rod or bar 11 to the opposite end of which is in turn connected a float or air chamber 16. In this way, when the tank is empty, descent of the float will cause the cap or bell 5, seal 3 and stem 10 to lift (assised by water pressure) so that water is smoothly discharged into the tank. The cap or bell 5 distri-butes the water uniformly circularly downward thus preventing splash and possible consequence of water seepage around the upper cover of the tank.
When the water reaches the desired normal full level, float 16 causes the lever or actuating arm 7 to press down on the cap or bell 5, so that the seal 3 presses against the shoulder of inlet orifice 2, cutting off the water flow. When the tank contents are again discharged the cycle repeats connection betwèen lever or actuating arm 7 and valve cap 5 can be adjusted by means of a screw 6 carried on the arm which allows the shut off level of water in the tank to be varied as required.
; On one of the tank faces there is also a vertical duct 17 which is built ~ into the tank forming an integral part thereof and made of the same material, ;~ with its upper mouth or opening 22 located at a level below that of ': .. , :~ _ 4 _ ' '' ' ~ ' "' '',' ' ' '' '' ' .. '' ' '': . ; ", ' ~ , ', ' "
- ' :, ~ ~ , .' ' ' ' ' ' ' ' " ' ., ,: ' , ,,, - ' ' ,, 1~25~ ~
supply or inlet duct 2. The duct 17 turns through 90 at the tank bottom along which it continues and intersects at 20 the vertical wall 21 of the flush dis-charge orifice housing of the toilet tank, so that communication with the toilet bowl always exists, whether the discharge orifice is open or closed.
The purpose of this arrangemént is that the height of the entry to the overflow duct or pipe is pre-set to optimum and cann~t be varled. If water is admitted to the tank so that the set level to which the tank shoulia fill is exceeded due to some deficiency in the closing of inlet valve, any excess of water drains directly to the toilet bowl through the flush dlscharge passage below the discharge orifice. Because the upper end 22 of the inlet duèt 23 is higher than upper opening 22 of duct 17 there is no danger of siphon back to the water supply mains should the pres~ure there fail. Since the height of mouth 22 is predetermined and can not be changed there i8 no danger of this being placed too low during repair of the tank, whereby water could wastefully drain away through setting of the "full" level of the tank being above the upper end of the overflow member.
The flush discharge orifice valve assembly and actuating means ia conventional and is not here described.
- , . ~ . .
.
Claims (7)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A toilet tank including a discharge passage for flushing water from said tank which comprises;
an inlet duct integrally formed in a wall of said tank and terminating at its upper end at a predetermined level in an inlet valve, an overflow duct integrally formed in a wall of said tank and leading to said discharge passage for discharge of overflow water through said overflow duct into said passage, a mouth defined on said overflow duct for receiving said overflow water from said tank situated at a predetermined level below that of said upper end of said inlet duct, said inlet valve comprising a conical protuberance formed integrally with the upper end of said inlet duct, said protuberance having a centre bore defined therein communicating with the interior of said inlet duct for inlet water flow through said bore, a stem received in said bore and a cap on said stem, and sealing means carried around the upper end of said stem adjacent said cap for sealing water flow from said bore upon downward movement of said cap and said stem into said bore.
an inlet duct integrally formed in a wall of said tank and terminating at its upper end at a predetermined level in an inlet valve, an overflow duct integrally formed in a wall of said tank and leading to said discharge passage for discharge of overflow water through said overflow duct into said passage, a mouth defined on said overflow duct for receiving said overflow water from said tank situated at a predetermined level below that of said upper end of said inlet duct, said inlet valve comprising a conical protuberance formed integrally with the upper end of said inlet duct, said protuberance having a centre bore defined therein communicating with the interior of said inlet duct for inlet water flow through said bore, a stem received in said bore and a cap on said stem, and sealing means carried around the upper end of said stem adjacent said cap for sealing water flow from said bore upon downward movement of said cap and said stem into said bore.
2. A toilet tank as defined in claim 1 comprising a float and an arm connected to said float and to said cap for moving said cap and stem for sealing said water flow upon raising of said float by water in said tank.
3. A toilet tank as defined in claim 2 said inlet duct having an upwardly extending ear thereon, a bore formed in said ear and said arm received in said ear bore for rocking movement therein for effecting vertical movement of said cap and stem.
4. A toilet tank as defined in claim 3, comprising threaded adjustment means connecting said arm to said cap for vertical adjustment of said arm with respect to said cap and stem.
5. A toilet tank as defined in claim 1, 3 or 4 comprising a catchment space defined integrally with the upper end of said inlet duct surrounding said protuberance for receiving a fraction of water discharged from said bore, supplying make up water for introduction into said discharge passage.
6. A toilet tank as defined in claim 1 said inlet duct terminating at its end remote from the inlet valve in a connecting fixture for connection to water supply means, said overflow duct also being integrally formed with a base to said tank and passing along said base to intersect said discharge passage.
7. A toilet tank as defined in claim 2 said inlet duct also being formed integrally with said tank base at its end remote from the inlet valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA330,048A CA1102501A (en) | 1979-06-19 | 1979-06-19 | Toilet tank with integral inlet valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA330,048A CA1102501A (en) | 1979-06-19 | 1979-06-19 | Toilet tank with integral inlet valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1102501A true CA1102501A (en) | 1981-06-09 |
Family
ID=4114484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA330,048A Expired CA1102501A (en) | 1979-06-19 | 1979-06-19 | Toilet tank with integral inlet valve |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1102501A (en) |
-
1979
- 1979-06-19 CA CA330,048A patent/CA1102501A/en not_active Expired
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |