Fire escape – ladder – or scaffold – Combined
Patent
1991-06-03
1992-04-07
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Combined
182181, 182224, 4032321, 269902, 256 23, B27B 2100, B25B 120
Patent
active
051019329
ABSTRACT:
When a piece of an upright 2" by 4" lumber is used as a cross member of a sawhorse, staging, or scaffolding, a drop over hanger is removably lowered down over the upright piece of 2" by 4" lumber. Thereafter, on opposite sides of the 2" by 4" lumber, this drop over hanger positions its integral respective two sets of four originally upstanding spaced top entry projecting slotted tabs, one set being on each side of the 2" by 4" lumber. When a like second drop over hanger, oriented upside down and rotated ninety degrees to the first one, is manipulated to interfit with a set of four originally upstanding spaced top entry projecting slotted tabs, but now facing downwardly, to a like set of the first drop over hanger, then this second drop over hanger is positioned to support another piece of 2" by 4" lumber at right angles to the first piece of 2" by 4" lumber. Also other types of supports, such as Vee shaped multiple wider sized board supports, are equipped with an integral like set of four spaced depending then bottom entry projecting slotted tabs for interconnection with the four upstanding top entry slotted tabs of the first drop over hanger. Thereafter this combination positions the Vee shaped multiple wider sized board support to receive an end or near end portion of a wider board, the other end of which is supported by another combination of a like drop over hanger and a like Vee shaped multiple wider sized board support.
REFERENCES:
patent: 3339920 (1967-09-01), Moritz
patent: 3843110 (1974-10-01), Smith
patent: 4181292 (1980-01-01), Hubel
patent: 4260040 (1981-04-01), Kieffer
patent: 4298095 (1981-11-01), Jackson
patent: 4318628 (1982-03-01), Mancini
patent: 4498801 (1985-02-01), Gilb
patent: 4561230 (1985-12-01), Rionda
patent: 4638885 (1987-01-01), Frederick
Machado Reinaldo P.
Mattern Jr. Roy E.
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