1. This sheave was attached to the input shaft of the transmission. 2. This was simply a variable width sheave controlled by spring and hydraulic pressures. 3. The power block is a large powered aluminium pulley with a hard rubber-coated sheave . 4. During shutdown, the actuator is used to lower the upper sheave to loosen the drive belts. 5. It is a " wood four-post type headframe with one sheave instead of two ." 6. Unlike other topmasts, the sprit topmast, because of its odd angle, lacked a sheave . 7. Safety concerns also led to replacement of the old pulley-sheave with a new gin-wheel. 8. Two sheave wheels, 1120mm diameter with a 120mm diameter and a 120mm deep rim lie on a nearby rubble heap. 9. The diameter of a loft block sheave for galvanized aircraft cable is typically at least 32 times the diameter of the cable. 10. The wire rope had parted approximately where it rested over the topmost sheave , when the davit was in its stowed position.
