Fire escape – ladder – or scaffold – Scaffold external of shaft
Patent
1980-06-13
1981-09-22
Machado, Reinaldo
Fire escape, ladder, or scaffold
Scaffold external of shaft
182 82, 182129, 297217, 108151, A47C 762
Patent
active
042905044
ABSTRACT:
A frame has upwardly convergent legs which support a plate on which a seat is swiveled. The frame provides a socket which fits over the upper end of an upwardly disposed tree stump or limb stub. A foot rest extends around three sides of the frame so as to leave an open side through which the hunter may climb up to the seat. Clamps in the lower portion of the frame secure it to the tree member.
REFERENCES:
patent: 1759966 (1930-05-01), Swinney
patent: 1823385 (1931-09-01), Barker
patent: 3338332 (1967-08-01), Brantly
patent: 3613896 (1971-10-01), Miller
patent: 3749200 (1973-07-01), Meyer
patent: 3863736 (1975-02-01), McWilliams
patent: 3967694 (1976-07-01), Woolfolk
patent: 4069891 (1978-01-01), McClung
patent: 4150733 (1979-04-01), Plummer
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