Expansible room structures

Claim 1

AN EXPANSIBLE HOUSING STRUCTURE COMPRISING TOP, BOTTOM, AND REAR WALLS, TWO SIDE WALLS, AND A FRONT WALL STRUCTURE, FIRST HINGE MEANS FORMING FIRST PIVOT AXES AND CONNECTING ONE END OF EACH OF SAID TOP AND BOTTOM WALLS TO SAID FRONT WALL STRUCTURE, SAID FIRST HINGE MEANS BEING POSITIONED SO THAT SAID FIRST PIVOT AXES ARE SPACED REARWARD FROM THE FRONT OF SAID FRONT WALL STRUCTURE, SECOND HINGE MEANS FORMING SECOND PIVOT AXES CONNECTING ONE END OF EACH OF SAID SIDE WALLS TO SAID FRONT WALL STRUCTURE, SAID SECOND HINGE MEANS BEING POSITIONED SO THAT SAID SECOND PIVOT AXES ARE FORWARD OF THE HINGE AXES OF SAID TOP AND BOTTOM WALLS, THIRD HINGE MEANS CONNECTING THE OTHER ENDS OF SAID SIDE WALLS TO THE SIDES OF SAID REAR WALL, EACH OF SAID SIDE WALLS BEING MADE OF TWO SECTIONS, FOURTH HINGE MEANS CONNECTING EACH PAIR OF SAID SIDE WALL SECTIONS TOGETHER, ROLLERS ATTACHED TO THE BOTTOM OF SAID REAR WALL, SAID ROLLERS BEING ENGAGEABLE WITH SAID BOTTOM WALL WHEN SAID BOTTOM WALL IS FOLDED DOWN TO A POSITION SUBSTANTIALLY NORMAL TO THE AXIS OF SAID HINGE MEANS CONNECTING ONE END OF SAID SIDE WALLS TO SAID FRONT WALL STRUCTURE, SAID BOTTOM WALL HAVING RECESSES THEREIN ADJACENT THE END OF THE BOTTOM WALL REMOTE FROM SAID HINGE MEANS FOR THE BOTTOM WALL, AND SAID ROLLERS BEING RECEIVABLE IN SAID RECESSES WHEN SAID REAR WALL IS POSITIONED ADJACENT SAID REMOTE END OF THE FOLDED DOWN BOTTOM WALL.