Fire escape – ladder – or scaffold – Safety device for ground-supported ladder – Terminal foot or shoe
Patent
1976-05-26
1977-08-02
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Safety device for ground-supported ladder
Terminal foot or shoe
E06C 746
Patent
active
040390470
ABSTRACT:
The safety of ladders is improved by providing them with pivoted foot members that carry ground spikes that rest against the foot member when not in use and rotate for ground penetration into a position in which the foot member exerts leverage to dig the spikes into the ground.
REFERENCES:
patent: 1113446 (1914-10-01), Kline
patent: 1352323 (1920-09-01), Stephan
Larson Clayton E.
Records Earl T.
Machado Reinaldo P.
Palmer Carroll F.
White Metal Rolling & Stamping Corporation
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