Pressure discharge waste disposal apparatus

Claim 2

A pressure discharge waste disposal device for use where waste must be discharged upwardly against the force of gravity or against a head of pressure, said device including a receptacle for receiving waste, means forming a chamber beneath said receptacle for receiving the waste from the latter through an opening therebetween, a valve for controlling flow of waste through said opening, and a waste pipe communicating with said chamber and through which waste is forced to a sewer, the improvement comprising: a first valve having inlet means connected to a source of water under pressure, and having two outlets, a second valve having an inlet connected to one of the outlets of said first valve, a third valve having an inlet connected to the other outlet of said first valve and having two outlets, said third valve having a valve head which is shiftable to two positions, one or the other position providing for water flow through an outlet while blocking water flow through the other outlet, one outlet being connected to said receptacle and the other being connected to the chamber beneath said receptacle, said second valve being operable to shift the valve head in said first valve to establish water flow to the inlet of said third valve, and means for forcibly removing waste and water from the chamber beneath said receptacle through said waste pipe.

Claim 3

The construction according to claim 1 wherein said second valve has an outlet connected to a drain.

Claim 4

The construction according to claim 1 and including a manually operable member for shifting the valve head of said second valve.

Claim 5

The construction according to claim 3 wherein said manually operable member also shifts The valve head of said third valve.

Claim 6

The construction according to claim 3 wherein the valve head of said third valve is connected to an actuating shaft which is moved by said manually operable member, and a cam fixed on said shaft for shifting the valve head of said second valve.

Claim 7

The construction according to claim 1 wherein the valve controlling flow of waste through the opening between said receptacle and the chamber therebeneath is of the stopper type which is shiftable vertically and in an upper position blocking flow of waste through said opening and in a lower position permitting flow of waste, a pressure responsive device for latching said stopper valve in upper position, said device having a water connection with said one outlet of said third valve so that water flowing through the latter will also exert a pressure on said pressure responsive device to shift the latter and unlatch said stopper valve to permit the latter to move to its lower position.

Claim 8

The construction according to claim 6 wherein said pressure responsive device is spring-pressed to latching position and wherein said other outlet of said third valve also has a water connection to a cylinder in which the rod carrying said stopper valve is vertically reciprocable, whereby when water is flowing to the chamber beneath said receptacle, the water pressure in said cylinder urges said stopper valve to its upper position and said pressure responsive device engages said rod to hold said stopper valve in its upper position.

Claim 9

The construction according to claim 1 wherein the valve head of said third valve is connected to an operating shaft which has a handle manually moved to one position by the user of said waste disposal device and returned from said one position after an interval of time, said shaft having a cam for opening the valve head of said second valve when said handle is moved to said one position to thereby shift the valve head of said first valve to establish water flow to the inlet of said third valve and simultaneously shift the valve head of said third valve to cause water to flow to said receptacle, said cam being moved out of engagement with the valve head of said second valve when said handle is returned from said one position and this valve head being held closed by water pressure while the valve head of said third valve is moved to interrupt water flow to said receptacle and establish water flow to the chamber therebeneath.

Claim 10

The construction according to claim 8 wherein the valve controlling flow of waste through the opening between said receptacle and the chamber therebeneath is of the stopper type which is vertically shiftable and in an upper closed position blocking flow of waste through said opening and in a lower open position permitting flow of waste, means for opening said stopper valve when water is flowing to said receptacle and for closing said stopper valve when water is flowing to the chamber beneath said receptacle, water flowing into said chamber building a pressure therein, means responsive to a predetermined pressure within said chamber to interrupt further water flow to said chamber and cause compressed air to flow to said chamber to force waste therein through said waste pipe.

Claim 11

The construction according to claim 9 wherein flow of compressed air simultaneously seats the valve head of said second valve and the latter causes shifting of the valve head of said first valve to block flow of water to the inlet of said third valve.

Claim 12

A pressure discharge waste disposal device for use where waste must be discharged upwardly against the force of gravity or against a head of pressure, said device including a receptacle for receiving waste, means forming a chamber beneath said receptacle for receiving the waste from the latter through an opening therebetween, a valve for controlling flow of waste through said opening, and a waste pipe communicating with said chamber and through which waste is forced to a sewer, the improvement comprisiNg: a diaphragm valve having both chambers connected to a source of water under pressure, the diaphragm of said valve in one position interrupting flow of water to one chamber and in another position interrupting flow of water to the other chamber, first valve means having fluid connection with said other chamber and including a valve head which in closed position blocks flow of water in said fluid connection to build up fluid pressure in said other chamber to cause said diaphragm to move to position wherein it interrupts flow of water to said one chamber, second valve means having a first fluid connection with said one chamber and adapted to control flow of water through either of two outlets which have fluid connections respectively with said receptacle and the chamber beneath the same, means for shifting the valve head of said valve means to open position to provide for flow of water from said other chamber of said diaphragm valve to thereby reduce pressure in said other chamber and cause said diaphragm to move to position interrupting flow of water to said other chamber, whereby water under pressure will flow to said second valve means and to either said receptacle or the chamber beneath the same, depending upon the position of said second valve means, and means for forcibly removing waste and water from the chamber beneath said receptacle through said waste pipe.

Claim 13

A pressure discharge waste disposal device for use where waste must be discharged upwardly against the force of gravity or against a head of pressure, said device including a receptacle for receiving waste, means forming a chamber beneath said receptacle for receiving the waste from the latter through an opening therebetween, a valve for controlling flow of waste through said opening, and a waste pipe communicating with said chamber and through which waste is forced to a sewer, the improvement comprisiNg: a diaphragm valve having both chambers connected to a source of water under pressure, the diaphragm of said valve in one position interrupting flow of water to one chamber and in another position interrupting flow of water to the other chamber, first valve means having fluid connection with said other chamber and including a valve head which in closed position blocks flow of water in said fluid connection to build up fluid pressure in said other chamber to cause said diaphragm to move to position wherein it interrupts flow of water to said one chamber, second valve means having a first fluid connection with said one chamber and adapted to control flow of water through either of two outlets which have fluid connections respectively with said receptacle and the chamber beneath the same, means for shifting the valve head of said valve means to open position to provide for flow of water from said other chamber of said diaphragm valve to thereby reduce pressure in said other chamber and cause said diaphragm to move to position interrupting flow of water to said other chamber, whereby water under pressure will flow to said second valve means and to either said receptacle or the chamber beneath the same, depending upon the position of said second valve means, and means for forcibly removing waste and water from the chamber beneath said receptacle through said waste pipe.

Claim 14

The construction according to claim 11 wherein the valve controlling flow of waste through the opening between said receptacle and the chamber therebeneath is of the stopper type which is vertically shiftable and in an upper closed position blocking flow of waste through said opening and in a lower open position permitting flow of waste, a rotatable shaft having connection with the valve head of said second valve means for shifting the latter between two positions, a lever fixed to said shaft and manually operated by the user of said waste disposal device, a cam fixed to said shaft and operable when said lever is moved to one position to open the valve head of said first valve means, means for opening said stopper valve when water is flowing to said receptacle and for closing said stopper valve when water is flowing to the chamber beneath said receptacle, water flowing into said chamber building a pressure therein, means responsive to a predetermined pressure with said chamber to interrupt further water flow to said chamber and cause compressed air to flow to said chamber to force waste therein through said waste pipe.

Claim 15

The construction according to claim 12 and further including means to interrupt flow of compressed air to said chamber when waste has been evacuated therefrom.