Fire escape – ladder – or scaffold – Safety device – platform associated – Railing
Patent
1987-12-22
1988-11-08
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Safety device, platform associated
Railing
182179, E04G 126
Patent
active
047829141
ABSTRACT:
A conventional construction scaffolding comprises sections formed of a pair of laterally spaced apart, vertically extending upright members secured in proper position by a cross brace assembly. An adjustable safety guard rail assembly therefor comprises a vertically spaced apart pair of bars pivotally and permanently attached to the cross brace members, the upper guard bar being pivotally connected intermediate its opposite terminal ends to a cross brace member and the lower guard bar being pivotally connected at one of its terminal ends to a cross brace member, the opposite end of the lower bar being connected slidably to the other cross brace member, to slide freely on the latter for accommodating variations in the spacing between the upright members of the scaffolding. The upper guard bar pivotally mounts a sleeve channel member on each of its terminal ends, the sleeve members configured to engage the uprights at one of the steps on the upright to lock the upper bar in place extending horizontally between uprights to obstruct the open spaces between the cross brace assemnbly and the flooring of the scaffold.
REFERENCES:
patent: 2431933 (1947-12-01), Hartmann
patent: 3084761 (1963-04-01), Robertson
patent: 3231043 (1966-01-01), Brown
patent: 3312305 (1967-04-01), Waun
patent: 3382949 (1968-05-01), Bloch
patent: 3752262 (1973-08-01), Helms
patent: 3854552 (1974-12-01), Kensrue
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