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Brown - figure 015 |
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Description
Represents what are known as White's pulleys, which can either be made with separate loose pulleys, or a series of grooves can. be cut in a solid block, the diameters being made in proportion to the speed of the rope ; that is, 1, 3, and 5 for one block, and 2, 4, and 6 for the other. Power as i to 6. |
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