Abstract: Disclosed is an impact-reduction box through which the hoisting ropes of a mining shovel or other machine pass. The impact-reduction box includes a roller frame subassembly and spring box subassemblies attached thereto on either side. The impact-reduction box is configured so that when the hoisting cables impact the box during undesirable whipping, the roller frame subassembly will move in reaction while the spring box subassemblies will remain essentially motionless. The mining shovel will feel less of the impact of the jolting hoisting rope, and the rope will not suffer the wear and tear of frequent slapping against the machine such that the rope will be less likely to completely break.

Abstract: A device for adjusting the delivery rate of a linear element. The device forms a delivery path for the linear element between an inlet to the device at a delivery rate that is substantially constant and an outlet from the device at a delivery rate that is variable and substantially periodic and varies the length of the path of the linear element in application of a predetermined periodic relationship. The device includes a plurality of pulleys movable in rectilinear translation periodically in sinusoidal manner.

Abstract: Disclosed is a guiding device of a hauling rope, in more detail, a guiding device of a hauling rope that installed at the top of casing, which controls inserting/withdrawing a hauling rope connected with a Sonde, measuring instrument, which probes, observes, and examines an underground structure, geological features, or soil conditions within borehole.

Abstract: A pulley actuator implements a motor to drive a screw and a guide rod to relatively expand or retract while utilizing one flexible rope and two pulleys to drive three telescoped tubes to relatively expand or retract move correspondingly. The pulley actuator has a simplified structure as compared with the known devices and is easy to fabricate.

Abstract: A load balancing hoist constructed to combine the power module and the travel module of the hoist into a single unit to substantially reduce the cost and the length of the hoist without effecting its operation and application.

Abstract: Embodiments of the present invention provide pulley apparatuses that can be easily incorporated into block-and-tackle configurations. In some embodiments, a rope can be easily dropped into place and removed, rather than having to be threaded in. For example, the pulley housing can include a rope channeling structure near the end opposite the aperture, and the rope channeling structure can facilitate introducing the rope into engagement with the wheel and/or removing the rope from engagement with the wheel. In some embodiments, the rope channeling structure can prevent the rope from inadvertently becoming removed from the pulley. Some pulley apparatuses can comprise a minimal number of parts, which can significantly simplify the manufacturing process and provide for a more consistent final product.

Abstract: A device for guiding a flexible elongated element such as a cable or the like, designed to guide the element during a drawing process, and comprising several rollers mounted pivoting about an axis and arranged such that they define a space for receiving the element and whereof the contour is substantially closed, the shafts of the rollers being borne by a support capable of opening into two parts whereof one is mounted articulated relative to the other; a first part is a bent flat iron such that it is formed by three abutted U-shaped brackets, two brackets being arranged facing each other and coupled each with the end of the wing of the other bracket whereof the web extends perpendicular to the parallel webs of the two brackets and the second part is a flat iron bent so as to form a bracket similar to the brackets of the first part but whereof the ends of the wings, not coupled to the web of the U-shaped bracket, are prolonged along two lugs extending outwards of the U parallel to the U web.

Abstract: A lifter device for a jacquard machine comprising a first lifter element and a second lifter element suspended from at least one hook, respectively. The hook is adapted to be selected to be carried along by one of two knives moving up and down in counterphase. A reversing roller is provided on the device. A lifter cord is provided. The lifter cord is either attached at one end to a part of the machine and is then passed over a roller of the first lifter element or is attached directly to the first lifter element. In either case the cord is passed over a reversing roller and a roller of the second lifter element. The other end of the cord is connected to at least one harness cord. The reversing roller is hingedly fixed and is disposed with its working face diagonal to the working faces of the rollers of the lifter elements.

Abstract: A winch mounting system includes a stationary mounting member and a winch supporting member slideably mounted thereon. Bearings permit the winch supporting member to move in a direction parallel to the rotational axis of the winch drum but restrain motion in all other directions. A fairlead or cable guide assembly, secured to the stationary mounting member, guides the cable to the drum. The tension on the cable forces the winch and drum to continually move to a position that maintains the shortest length of cable between the fairlead and the drum. As a result, the cable winds neatly and evenly on the drum without binding or bunching.

Abstract: A four position tackle assembly for controlling the movement of at least one heddle in a weaving loom, including adjacent pulley blocks having first and second pulleys. A cord member is secured at one end relative to the weaving loom and successively extends therefrom over an idle pulley mounted to a first of the pulley blocks, a first guide pulley, the second pulley of the first pulley block, a second guide pulley, and the second pulley of the second pulley block to an end which is securable to at least one heddle.

Abstract: A tackle device for lifting at least one warp thread in an open-shed jacquard machine, with two complementary hooks, in which one end of each of a first tackle cord is fixed to one hook and the other end to a second adjacent hook. A first tackle element with two rotary rollers is suspended in a loop formed by the first tackle cord. A second tackle cord is attached at one end to a fixed point of the first tackle element and runs around a third rotary roller of a fixed second tackle element further going around the second roller of the first tackle element and having the other end attached to a warp thread.

Abstract: A pulley arrangement for a Jacquard machine, in which for at least every two picks, three positions can be created for the warp threads is made up of two pulley elements (14) and (17) hanging above one another and suspended below each set of two complimentary hooks (11), (12). Pulley cord (13) is fixed by each end to one of the hooks (11), (12), with the downward-hanging part running over the top roller (14') of pulley element (14). Pulley cord (15) is suspended from one hook (11) and runs with the downward-hanging part over the top roller (17') of pulley element (17). It is passed upward over the bottom roller (14") and is fixed by the end to fixed and controllable grid (16). Pulley cord (18) is guided over the bottom roller (17") of pulley element (17), fixed by one end to fixed or controllable grid (19) and is connected by the other end to at least one warp thread.

Abstract: A roller entry guide to guide material along a longitudinal axis has a body and a pair of generally parallel roller assemblies pivotally mounted on the body for rotation about an axis normal to the longitudinal axis. Each of the roller assemblies is located on an opposite side of the longitudinal axis to define a passageway for material moving along the axis and includes at least one roller rotatably attached thereto. The guide also includes a wedge that acts between the roller assemblies and the body. The wedge has a pair of legs disposed at either side of the body. These legs have tapered portions at the ends thereof which are operable on respective roller assemblies. An adjustment assembly is operable on the wedge to position the wedge to induce rotation of the roller assemblies about a vertical axis, and cause the rollers to be moved simultaneously and to equal distances towards or away from the longitudinal axis.

Abstract: Traction enhancement for a traction elevator system has an elevator car and counterweight connected by a plurality of wire ropes reeved about a drive sheave with a predetermined angle of wrap. An arcuate frame having a plurality of rollers has one end pivotally and adjustably fixed, while its other end biases the rollers against the ropes in the angle of wrap with a tension spring. Over travel of the elevator car releases the bias to allow the ropes to slip should the counterweight reach an end of its travel path.

Abstract: A boat steering assembly including a pedestal steering actuator for actuating steering movement, a rudder having a steering axis, and cables for transmitting steering movement from the pedestal steering actuator to the rudder. The assembly further includes an idler plate sheave assembly for guiding the cables from the pedestal steering actuator in a substantially vertical orientation to the rudder in a substantially horizontal orientation. The idler sheave assembly is mounted on bolts by adjustable nuts for adjustingly angulating the idler sheave assembly in relation to the rudder to guide the cables leading from the idler sheave assembly in a plane perpendicular to the steering axis of the rudder.