steel hauling shackles
steel chain claws
semi-steel, heavy duty equilizer sheaves
semi-steel hauling chain equalizers
weldment chain slides
dry docks are hauled by special welded-steel, open-link hauling
chain pulled by the sprocket teeth of the chain wheel and returned
for down-hauling by a smaller sized stud-link backing chain.
diagram is an example of a Crandall endless loop chain system
arrangement for a typical two-chain railway. The components of
this system are individually described in the links at left.