Extensible trailer section room

The combination of a travel trailer and an extension room therefor and means movably positioning said extension room in said travel trailer, said travel trailer having a main frame, a floor, walls and a roof secured thereto, said main frame consisting of horizontally disposed vertically spaced upper and lower box frame members positioned longitudinally of said travel trailer and vertical box frame members positioned between said horizontally disposed upper and lower box frame members, said extension room having a secondary floor, walls and roof being movable disposed in an opening in a wall of said travel trailer, an end wall support frame secured to said extension room, a support frame positioned on said upper box frame members of said main frame of said travel trailer adjacent said roof thereof, said support frame consisting of an elongated traversely positioned frame member, angularly positioned brace frame members extending between said elongated frame member and one of said upper box frame members, and a second support frame telescopically engaged in said first support frame and movable relative thereto, said end wall support frame of said extension room attached to said second support frame and suspended therefrom, and a mechanical device for imparting longitudinal movement whereby said extension room may be moved relative to said travel trailer while suspended from said second support frame.