Tower crane

Details Tower crane Tower crane

1977-08-19

1979-07-03

Oresky, Lawrence J.

Traversing hoists

Overhead

Cable

212 49, B66C 2362

Patent

active

041597761

ABSTRACT:
A tower crane is disclosed in which a balance arm is pivotally connected to the top of the tower on an axis midway between the front edge of the tower and the rear edge thereof. The front end of the balance arm extends beyond the front edge of the tower, and a boom to support a load is connected to said front end of the arm. A backstay exerts a downward force on the rear end of the balance arm to balance the load. The load carried by the boom is therefore distributed equally to the four corner chords of the tower.

REFERENCES:
patent: 3664516 (1972-05-01), Goudy

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