Abstract: This patent discloses embodiments of a crane system that provide for high-capacity failure proof operation. For example, an overheard crane system may include a trolley configured to translate between a first position and a second position. The crane system may further include a lift mechanism carried by the trolley or a support span portion of the trolley and be configured to releasably translate a chain between a support position and a lift position. The lift mechanism, in turn, could include a fixed latch configured to engage a first link of the chain, the fixed latch having an open position and a closed position, and a traveling latch movably aligned relative to the fixed latch and configured to engage a second link of the chain, the traveling latch having an open position and a closed position.