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Summary: Explanatory film on the Aerial Gravity Ropeway, a means of bridging a water gap, and unloading stores from a ship which cannot lie alongside.
Description: Views of the system, with diagrams and CUs of components. A line is rigged from ship's derrick mast to tripod stand on shore. Cargo is lifted in a sling suspended from a carrier and runner block combination. The sling is hoisted up to the span wire, where the runner latches on, frees itself from the carrier, and then runs down the wire to shore with the cargo. When the cargo is discharged, the runner is pulled back along the span and re-connected to the carrier for another lift. Diagrams illustrate the importance of the angle and proper tension in the span wire, ensuring that the set runs properly, and stops conveniently at the shore end. Adjustments are made by a tension table connecting the span wire to its anchorage and, for the angle of the span, by a snatch block at the mast end or stand lowering table attached to the tripod. End sequence shows the system in operation.