In an elevator sheave for a flat belt, hard, thin surface plating can be applied to enhance durability while maintaining traction.

A rope controller constructed without a spring or any other resilient means for controlling movement of a rope having a standing end and a free end. The rope controller is cam actuated and includes a housed cam which is journaled for movement toward and away from a clamping portion of the housing and is responsive to movement of a rope in either direction. The cam is activated to prevent movement of the standing end of the rope by tensioning the standing end of the rope. The cam is deactivated t...

A ratchet-type tensioning mechanism for a rope or cord has a rotatable sheave with faces having radially extending serrations. A releasable ratchet mechanism permits rotation of the sheave in one direction but not the other. A plurality of serrations circumscribes the sheave, which is closely fitted within a curved surface within a housing within which the sheave is rotatably mounted. The curved surface forces the rope into the sheave and maintains it in non-slippiong contact therewith. An openi...

A device (10) for crimping and cutting dough ropes into pillow-shaped longitudinal lengths is disclosed including a cutting roller (12) and an anvil roller (14). The peripheries (22, 24) of the rollers (12, 14) include a plurality of axially extending, spaced, parallel, linearly straight lands (26, 30) separating, forming, and defining a plurality of grooves (28, 32) therebetween. Compressible tubes (46) are stretched between end plates (36) located on the opposite axial ends of the cutter rolle...

A handle assembly includes a ring-shaped body which has three tapered passages defined radially therethrough, each passages having a large diameter opening defined in the inside of the handle and a smaller diameter opening defined in the outside of the handle. A resilient rope extends through at least one of the tapered passages. A locking device has a teardrop member and a shank extending from the teardrop member. The shank has a collar connected thereto, and the collar has a clamping member mo...

A ratchet-type tensioning mechanism for a rope or cord has a rotatable sheave with faces having improved outwardly extending serrations which include alternating primary and secondary projections. The secondary projections are located in valleys between pairs of primary projections. A releasable ratchet mechanism permits rotation of the sheave in one direction but not the other. The projections are positioned at regular intervals around the circumference of the sheave and located so that a prima...

A hoisting rope includes a plurality of longitudinally spaced, discrete targets retained within the rope. The targets have a characteristic that may be monitored by a device that is responsive to that characteristic. In a particular embodiment, the targets are formed from a magnetically permeable material and the monitoring device responds to changes in the magnetic field as the target passes the monitoring device. In another embodiment, the targets are formed from material that reflects electro...

A process for preparing an alginate rope, which process comprises the steps of: (a) extruding an aqueous solution of a water soluble alginate into a coagulation bath; (b) contacting the extruded water soluble alginate with a source of a cation capable of forming a water insoluble alginate salt so as to produce a tow of water insoluble alginate fibers; (c) twisting the water insoluble alginate fibers of the tow; and (d) stretching the fibers up to 250% of their original length. The alginate rope ...

A device for winding and storage of ropes, cables, wires, etc., comprises a substantially elongate body portion having a pair of horn-like members extending from opposite ends thereof. The horn-like members are adapted to have a rope or the like coiled therearound, with at least one of the horn-like members being made so that it can be readily turned toward the other horn-like member, whereby the coil of rope or the like is readily disengaged and removed from the device.

A rope-twisting machine for making ropes includes arranged on a base in succession a rotor carrying rope elements, a mandrel rigidly connected to the rotor and having shaping grooves, pressure rollers mounted in a casing, the axes of the pressure rollers being arranged in planes passing through the axis of rotation of the rotor. The casing is disposed concentrically relative to the mandrel, the casing and the rotor being capable of relative rotation.