loader

Loader is a logistics building that moves items between a running transport belt and an adjacent belt, chest, or vehicle; it is placed directly on belt endpoints to automatically load or unload items without using inserters. Loaders align with belt direction and can bridge different belt orientations, letting belts feed into or take items from containers and wagons while preserving belt throughput and direction. In gameplay they simplify automated loading/unloading of trains, chests, and factories and are used where direct belt-to-container transfers are desired.