A pulley system comprising: a first pulley rotatable about a first pulley axis, a first cable portion wrapped around the first pulley, such that, when the first pulley is rotated in a first direction about the first pulley axis, the first cable portion is unwound from the first pulley, and a second cable portion wrapped around the first pulley, such that, when the first pulley is rotated in the first direction about the first pulley axis, the second cable portion is wound further onto the first pulley, wherein the first and second cable portions form a continuous cable passing radially through the first pulley.

A pulley system comprising: a first pulley rotatable about a first pulley axis, a first cable portion wrapped around the first pulley, such that, when the first pulley is rotated in a first direction about the first pulley axis, the first cable portion is unwound from the first pulley, and a second cable portion wrapped around the first pulley, such that, when the first pulley is rotated in the first direction about the first pulley axis, the second cable portion is wound further onto the first pulley, wherein the first and second cable portions form a continuous cable passing radially through the first pulley.

A pulley comprising a wheel or sheave (1) having a central recess (2) and a channel (3); and at least one fastening cable (4) designed for transmitting the force from the sheave (1) to a fastening point, the cable passing transversely to the sheave (1) through the central recess (2); and which incorporates at least one low-friction bushing (6) that is housed between the fastening cable (4) and the sheave (1).

A pulley comprising a wheel or sheave (1) having a central recess (2) and a channel (3); and at least one fastening cable (4) designed for transmitting the force from the sheave (1) to a fastening point, the cable passing transversely to the sheave (1) through the central recess (2); and which incorporates at least one low-friction bushing (6) that is housed between the fastening cable (4) and the sheave (1).

An illustrative example embodiment of elevator sheave liner includes a rigid central portion made of a first material and a resilient outer portion made of a second material. The central portion defines a traction surface that is configured to receive an elevator tension member. The outer portion defines an engagement surface that is configured to secure the sheave liner to an elevator sheave.

An illustrative example embodiment of elevator sheave liner includes a rigid central portion made of a first material and a resilient outer portion made of a second material. The central portion defines a traction surface that is configured to receive an elevator tension member. The outer portion defines an engagement surface that is configured to secure the sheave liner to an elevator sheave.

A unitary fastener and cable guidance device is operable with a pulley block assembly for stringing cable across towers. The device guides a cable onto a sheave wheel of the assembly, while fastening directly to the assembly through a unitary cantilevered axle. The one-piece design comprises a pair of discs forming an annular depression there between, and a cantilevered axle extending from the outer side of one disc. This unitary configuration reduces the number of fasteners and other components. Since the cantilevered axle is the fastening mechanism, rather than a separate fastener passing through a hole through the center of the device, the minimum outer diameter of the annular depression can be smaller than the outer diameter of the cantilevered axle, allowing the central portion of the device to be smaller and thus its sides to be higher, which helps hold the cable more robustly within the device.

An elevator sheave assembly with independently rotating sheaves includes a shaft having a longitudinal axis and a plurality of sheave subassemblies independently rotatable about the longitudinal axis of the shaft. Each of the plurality of sheave subassemblies includes a sheave having a running surface configured for frictional tractive engagement with a tension member, and at least one bearing rotatably connecting the sheave to the shaft. The elevator sheave assembly further includes a bearing spacer arranged between adjacent sheave subassemblies of the plurality of sheave subassemblies on the shaft to isolate rotation of the adjacent sheave subassemblies relative to one another. Each of the plurality of sheave subassemblies is independently rotatable such that the tension member associated with each of the plurality of sheave subassemblies operates on its own independently rotating sheave.

An elevator sheave assembly with independently rotating sheaves includes a shaft having a longitudinal axis and a plurality of sheave subassemblies independently rotatable about the longitudinal axis of the shaft. Each of the plurality of sheave subassemblies includes a sheave having a running surface configured for frictional tractive engagement with a tension member, and at least one bearing rotatably connecting the sheave to the shaft. The elevator sheave assembly further includes a bearing spacer arranged between adjacent sheave subassemblies of the plurality of sheave subassemblies on the shaft to isolate rotation of the adjacent sheave subassemblies relative to one another. Each of the plurality of sheave subassemblies is independently rotatable such that the tension member associated with each of the plurality of sheave subassemblies operates on its own independently rotating sheave.

An illustrative example embodiment of elevator sheave liner includes a rigid central portion made of a first material and a resilient outer portion made of a second material. The central portion defines a traction surface that is configured to receive an elevator tension member. The outer portion defines an engagement surface that is configured to secure the sheave liner to an elevator sheave.