At the head of the plane is mounted a drum or sheave, and around it passes a rope, one end of which is attached to the loaded cars at the top, the other to the empty cars at the foot. [Please select]
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The traction rope is carried over the sheave at the top, then let fall and passed round a sheave in a block below. [Please select]
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The sheave has a deep groove all round the edges, in which the straps ride. [Please select]
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The "nigger head," as will be seen, is operated by a rope sheave on the same axle. [Please select]
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It was wrapped twice around the driving sheave and once around the "nigger head" sheaves. [Please select]
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Then it is brought back to a sheave at the bottom of the upper block, and so it goes down to the lower block, where it is fastened through a hole in that block. [Please select]
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Let the rope be put in round the sheave of this block, and brought back to the block that is fastened at the top of the machine. [Please select]
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