Arrived at the farther sheave C, the now cool pigs are dumped into a railway car.
A cord has one end made fast a to and wrapped round the barrel AE; it passes from A under the sheave FG, and has the other end wrapped round and made fast to the barrel BD.
The Dan wire is then heaved upon round the corner sheave until the anchor is brought inboard.
With this arrangement a single revolution of the upper sheave causes the endless chain to wind up the chain on one side by an amount irD, and to unwind an amount Ord on the other side, and in consequence the lower sheave is raised by 7r(D - d)/2.
Thus the Danleno is heaved tight to the top sheave of the gallows.