Traversing hoists – Overhead – Cable
Patent
1975-01-02
1976-05-25
Paperner, L. J.
Traversing hoists
Overhead
Cable
212145, 214 77R, B65G 6704, B60P 148
Patent
active
039587029
ABSTRACT:
Mobile load handling apparatus for handling elongated loads includes an elongated platform supported at an elevation above ground, and a crane at each end of said platform for alignment with a corresponding end of an elongated load. Each crane has an elongated mast with a base by which it is attached to the platform for radial movement thereon between one position in which it is disposed substantially horizontally across the corresponding end of the platform and another position in which it is disposed substantially erectly at one side of the platform. A jack is interconnected between the mast and the platform and is extendable and contractable to move the mast between its two positions. The mast has a free end opposite the base and an arm attached thereto at the free end for swinging thereon between an outstretched position in which it is in substantial axial alignment with the mast and a jack-knife position in which it forms a sharply acute angle with the mast. A further jack is interconnected between the mast and the arm and is extendable and contractable to move the arm between the two positions aforesaid relative to the mast, the arm having a free end remote from its point of attachment to the mast and an extension at the free end which is retractably propellable to lengthen and shorten the arm. A double-ended beam is suspended from the extension and is balanced to retain a substantially horizontal orientation irrespective of the positioning of the arm, and each end of the beam has locking devices cooperable with the top of said load. The height of the platform and the proportions of the mast and arm are scaled to enable stacking of two standard freight containers one on top of the other on one side of the platform and loading of one such container on a vehicle of standard height on the other side of the platform.
REFERENCES:
patent: 3073458 (1963-01-01), Wieschel
patent: 3485392 (1969-12-01), Lofgren
patent: 3515295 (1970-06-01), Klaus
patent: 3523620 (1970-08-01), Klaus
patent: 3557980 (1971-01-01), Klaus
patent: 3612308 (1971-10-01), Klaus
patent: 3743108 (1973-07-01), Visser
patent: 3780877 (1973-12-01), Levitt
Paperner L. J.
Steadman Containers Limited
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