Fire escape – ladder – or scaffold – Having transpositioning base and erecting means – Telescopic erecting means
Patent
1975-01-02
1976-06-01
Sheridan, Robert G.
Fire escape, ladder, or scaffold
Having transpositioning base and erecting means
Telescopic erecting means
182128, 214 17DB, B65G 6532, E04G 136
Patent
active
039602834
ABSTRACT:
A support structure mounted at the top of the side walls of a tower silo including a safety platform accessible from the exterior of the silo, and extending into the interior of the silo so that operators may stand on the platform for servicing unloaders and filler devices at the top of the silo. Incorporated into the support structure is a track member which has a traveling carriage thereon adapted to provide a support for both a silo unloader and a silage filling distributor. The carriage and the distributor are connected by linkage such that when the filling distributor is to be used, the carriage moves laterally to move the center of support for the silo unloader away from the center of the silo so that the silo unloader can be raised above the top of the silo staves and positioned out of the way. During the times when the filling distributor is not being used, the distributor is moved to a retracted position, and the carriage automatically moves back to a position to center the support for the silo unloader with respect to the silo for normal operation of the unloader.
The support track and the safety platform are securely supported on the silo walls through a quintapod arrangement, comprising five distinct points of attachment to the track member and five points of support on the silo walls.
REFERENCES:
patent: 1258402 (1918-03-01), Garner
patent: 1380074 (1921-05-01), Myers
patent: 3407007 (1968-10-01), Fassauer
patent: 3565268 (1971-02-01), Buschbom
patent: 3837427 (1974-09-01), Mattinson
Sheridan Robert G.
Van Dusen & Co., Inc.
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