Grantham mechanical ventilator for use in preventing flashover when fighting fires

A firefighting device for ventilating smoke and suppressing fire in a burning structure, the device comprising:

• a nozzle assembly mounted to a ladder at a 90 degrees angle relative to the ladder, wherein the nozzle assembly is configured to be secured to a window of the burning structure, the nozzle assembly comprising:
• an entry tip nozzle oriented toward a first direction pointing away from the ladder, wherein the entry tip nozzle is configured to provide a plurality of spinning narrow streams of water for suppressing fire inside the structure, wherein the entry tip nozzle further includes a forcible-entry mechanism, and
• a fog nozzle oriented toward a second direction opposite to the first direction, wherein the fog nozzle is directed toward the window from inside the burning structure and configured to spray water outwardly through the window, and wherein the fog nozzle is configured to ventilate smoke from the burning structure to improve visibility inside the structure;
• a water supply pipe configured to supply water to the nozzle assembly, wherein the fog nozzle is fluidly connected to the water supply pipe via a substantially U-shaped pipe section, wherein the U-shaped pipe section extends upwardly from the water supply pipe;
• a support plate attached to the water supply pipe and the U-shape pipe section;
• and
• a cover assembly comprising:
• a bottom plate covering a bottom portion of the water supply pipe and the nozzle assembly,
• a top plate covering a top portion of nozzle assembly and the U-shape pipe section, and
• a rescue plate provided at a top portion of the water supply pipe, wherein the rescue plate provides a flat platform allowing firefighters to reach the ladder and escape the burning structure.