Fire escape – ladder – or scaffold – Scaffold external of shaft
Patent
1977-03-24
1978-09-12
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Scaffold external of shaft
108 2, A47C 910, A47F 512
Patent
active
041130570
ABSTRACT:
A tree stand, seat, or table adapted to be attached to a tree or like vertical column, comprising a board or like planar support member, provided with piercing points adapted to engage the tree, tie-attaching means substantially below said piercing points, and tie means for tying said tie-attaching means against said tree with the seat in vertical position along side the tree. Spring means is interposed between the tie means and the board or between the piercing points and the board so that when the board is rotated up to the horizontal position, the spring means is loaded and forces the piercing points into the tree and tends to cause the seat to return to its initial vertical position along side the tree. Brace means is provided to hold the board in horizontal position which has piercing points at the lower end which are forced into the tree when the board is moved toward the initial position and which are held in engagement with the tree by the spring means, tending to cause the board to rotate toward the initial position.
REFERENCES:
patent: 2394203 (1946-02-01), Pruder
patent: 3419108 (1968-12-01), Mobbs
patent: 3885649 (1975-05-01), Damron
patent: 3990537 (1976-11-01), Swenson
Hueschen Gordon W.
Machado Reinaldo P.
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