Fire escape to be attached to the outside of a building

Claim 1

A fire escape attached in parallel position to the outside of a face of a building having vertically aligned safety outlets of like widths therein, said fire escaping comprising: A. a different horizontal platform extending away from the building at the sill of each safety outlet, i. the widths of the platforms being substantially equal to the widths of the associated outlets, B. two supporting columns the lower ends of which are located adjacent and spaced outwardly from the base of the building, i. said columns extending the whole height of the building, ii. said columns being located adjacent the outside corners of the platform and supporting the same, iii. one column being substantially horizontally registered with one vertically registered set of vertical edges of the safety outlets and the other column being substantially horizontally registered with the other vertically registered set of vertical edges of the safety outlets whereby the columns are mutually spaced apart in a horizontal direction parallel to said face of the building by substantially the width of the safety outlets, C. two sets of half-turn spiral stair winders i. each set being associated with and supported by a different column, and D. plural vertically registered series of straight steps, i. each series of straight steps of the plural series being spaced away from the building and parallel to said face of the building and being located vertically midway between safety outlets, E. the two sets of half-turn spiral stair winders, the plural series of straight steps and the platforms being interconnected in a sequence such that i. a descending half-turn spiral stair winder of one set leads from a higher horizontal platform down and around to a series of descending straight steps which leads to a descending half-turn spiral stair winder of the other set which leads down and around to the next lower horizontal platform which leads to the next lower descending half-turn spiral stair winder of the one set in a repeating arrangement that terminates adjacent the base of the building, F. whereby a building occupant in the event of fire when leaving the building by the fire escape exits through a safety outlet and then continuously moves down and around the fire escape with a minimum change in direction which occurs for only a short span at the platforms and the series of straight steps so that the building occupants can descend the fire escape rapidly and without hindrance.