Fire escape – ladder – or scaffold – Traversing – track-mounted – With vertically spaced second track
Patent
1983-08-18
1988-09-27
Machado, Reinaldo P.
Fire escape, ladder, or scaffold
Traversing, track-mounted
With vertically spaced second track
182142, E04G 310, E04G 316
Patent
active
047735040
ABSTRACT:
A rolling safety trolley for traversing the upper circumference of an open tank having a top ledge comprises: a frame having an upright member and at least one cross member, and preferably a plurality of cross members, an outer wall roller affixed to the extremity of each of said crossmembers and adapted to engage and roll along the outer wall surface of said tank, a hooked member affixed to the uppermost portion of said upright member, a top ledge roller affixed to said hook member and adapted to engage and roll along said top ledge, and an inner wall roller affixed to said hook member and adapted to engage and roll along the inner wall of said tank.
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Morris Roger W.
Prichard Clarence G.
Reed Harold L.
Lambert Howard R.
Machado Reinaldo P.
Union Oil Company of California
Wirzbicki G.
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