Abstract Release device for flooding spaces subject to pressure includes a water supply tank having a wall formed with an opening therein and adapted to contain a supply of water up to a given level below the top of the wall, at least one hinged flap extending across the opening for closing the opening and hinged at the upper end thereof to the wall, the flap being openable toward the outside of the tank, tow hook means secured at one end thereof to the lower end of the hinged flap and at the other end thereof in a recess formed in the wall, the wall being formed with a chamber located above the hinged flap and communicating with the interior of the tank, the chamber being adapted to contain water up to the given level and air above the given level and including a partition extending from the top of the wall to a location below the given water level, float means disposed in the chamber so as to float at the given level on water contained in the chamber, and a pull rope connecting the float means and the tow hook for lifting the tow hook to open the hinged flap when a pressure increase occurs in the air above the water in the interior of the supply tank causing the given level of water in the interior of the tank to drop and the given level of water in the chamber to rise.
Release device for flooding spaces subject to pressure comprising a water supply tank having a wall formed with an opening therein, and adapted to contain a supply of water up to a given level below the top of said wall at least one hinged flap extending across said opening for closing said opening and hinged at the upper end thereof to said wall, said flap being openable toward the outside of said tank, tow hook means secured at one end thereof to the lower end of said hinged flap and at the other end thereof in a recess formed in said wall, said wall being formed with a chamber located above said hinged flap and communicating with the interior of the tank, said chamber being adapted to contain water up to said given level and air above said given level and including a partition extending from the top of said wall to a location below said given water level, float means disposed in said chamber so as to float at said given level on water contained in said chamber, and a pull rope connecting said float means and said tow hook means for lifting said tow hook means to open said hinged flap when a pressure increase occurs in the air above the water in the interior of said supply tank causing the given level of water in the interior of said tank to drop and the given level of water in said chamber to rise.
Claim 2
Dependent Claim
246 words
Release device for flooding spaces subject to pressure comprising a water supply tank having a wall formed with an opening therein, and adapted to contain a supply of water up to a given level below the top of said wall at least one hinged flap extending across said opening for closing said opening and hinged at the upper end thereof to said wall, said flap being openable toward the outside of said tank, tow hook means secured at one end thereof to the lower end of said hinged flap and at the other end thereof in a recess formed in said wall, said wall being formed with a chamber located above said hinged flap and communicating with the interior of the tank, said chamber being adapted to contain water up to said given level and air above said given level and including a partition extending from the top of said wall to a location below said given water level, float means disposed in said chamber so as to float at said given level on water contained in said chamber, and a pull rope connecting said float means and said tow hook means for lifting said tow hook means to open said hinged flap when a pressure increase occurs in the air above the water in the interior of said supply tank causing the given level of water in the interior of said tank to drop and the given level of water in said chamber to rise.
Claim 3
Dependent Claim
42 words
Release device according to claim 1 wherein said hinged flap is formed of an upper and a lower part mutually connected by a hinge having a horizontal pivot axis, said lower hinge part being swingable outwardly initially about said horizontal pivot axis.