Fire escape – ladder – or scaffold – Chute or escape tower for personnel – With ladder
Patent
1974-06-24
1976-09-14
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Chute or escape tower for personnel
With ladder
A62B 120
Patent
active
039801551
ABSTRACT:
Fire escape for use in multi-storied building having floors spaced generally equally from adjacent floors at floor spacing. Fire escape has fire resistant, vertical, hollow outer column and similar inner column positioned generally centrally within outer column. Outer and inner columns have generally oval-sectioned inner and outer wall respectively spaced apart to provide columnar space therebetween. Chute within columnar space follows generally helical path of essentially constant pitch of twice floor spacing so that one complete circuit of chute passes two floors. In one embodiment for wide floor spacing, inner column is hollow and has column floors disposed therein level with floors outside outer column and spiral stairway spaced above chute to follow chute with sufficient head room for persons on the chute or stairway. Person escaping enters outer column through door opening, and can descend stairs directly; or through openings in inner column can descend by chute. In second embodiment for narrower floor spacing, a columnar space contains chute and stairway arranged side by side having equal helical pitches, stairway spaced outwards from chute. Dividing wall between chute and stairway prevents interference between persons using chute or stairway. Opening through outer column permits access to stairs, and opening through dividing wall permits access to chute. In both embodiments a second complementary chute and stairway can be provided so that each embodiment has four independent escape routes.
REFERENCES:
patent: 277156 (1883-05-01), Pardessus
patent: 318086 (1885-05-01), Clarke
patent: 506238 (1893-10-01), Kirker
patent: 849340 (1907-04-01), Schwab
patent: 937552 (1909-10-01), Rieseck
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