Abstract: An overhead-line using system includes: a plurality of supports; a main rope supported by the supports and configured such that both ends of the main rope are fixed; a work rope movably supported by the main rope; a winding device configured to wind up the work rope; a moving device movably supported by the main rope and connected to the work rope, the moving device being movable in the air when the work rope is wound up by the winding device; and a power generator configured to move along with movement of the work rope. The power generator generates electric power by moving relative to the main rope.

Abstract: A hoist with built-in load sensitive automatic speed change device includes: a high-torque input member coupled to a hand wheel, a magnetic clutch coupled via a speed-increasing mechanism and configured to transmit a low load, and an output transmitting means configured to transmit a rotational operating force of the hand wheel to mechanical brakes via the high-torque input member or magnetic clutch, wherein the hand wheel is axially supported by a drive member coupled to the output transmitting means of the mechanical brakes and rotated thereby, the magnetic clutch is arranged between the speed-increasing mechanism and the hand wheel, the hand wheel and the speed-increasing mechanism are coupled by a hollow input member provided so as to cover the outer periphery of the magnetic clutch, the output transmitting means is fitted onto a boss portion of the drive member so as to allow torque transmission to the boss portion.

Abstract: The present invention is particularly efficacious when practiced as a system for transferring payloads between sideways-adjacent vessels at sea. As typically embodied, an inventive inter-locational transfer system includes: a trolley; a set of parallel cable-rails upon and along which the trolley is rollable; a pair of pulling cables, respectively connected to the two sideways-adjacent ships, for exerting pulling forces on the trolley in opposite directions along the cable-rails; at least four hoisting cables, separately and distantly attached at the bottom of the trolley and at peripheral points of the payload, for suspending a rectangular payload (e.g.

Abstract: A crane for loading and unloading a cargo includes multi-stage trolley. The multi-stage trolley for a crane includes a first trolley movable in a longitudinal direction along a boom of the crane; a second trolley movable in a lateral direction on the first trolley; a hoisting wire provided in the longitudinal direction along the boom; a spreader connected to the hoisting wire through the first trolley and the second trolley and supported by the hoisting wire, the spreader being movable in a vertical direction according to a movement of the hoisting wire. The multi-stage trolley further includes a sheave block unit for changing a direction of the hoisting wire to maintain a vertical level of the spreader constant when the first trolley and/or the second trolley is moved.

Abstract: A crane for loading and unloading a cargo includes multi-stage trolley. The multi-stage trolley for a crane includes a first trolley movable in a longitudinal direction along a boom of the crane; a second trolley movable in a lateral direction on the first trolley; a hoisting wire provided in the longitudinal direction along the boom; spreader connected to the hoisting wire through the first trolley and the second trolley and supported by the hoisting wire, the spreader being movable in a vertical direction according to a movement of the hoisting wire. The multi-stage trolley further includes a sheave block unit for changing a direction of the hoisting wire to maintain a vertical level of the spreader constant when the first trolley and/or the second trolley is moved.

Abstract: A carriage of the types commonly used in skyline logging operations. The invention facilitates moving logs along a suspended skyline by means of a hoisting system built into the carriage comprised of a radio controlled electronics system, an internal combustion power plant, proportional controlled hydraulically driven skidline sheave, a skidline clamp and skyline clamp. A novel method of pump control keeps the internal combustion engine operating within its power band. The volume output of the pump is controlled by engine RPM to adjust the pump's load on the engine. Combined operation of the various controls on the carriage, in conjunction with the controlled operations of the yarder winch at the end of the skyline, result in a system well suited for efficient logging operation. The choker/setter (ground crew) and the yarder are able to remotely control the carriage operation as a team. The carriage controls of the present invention are primarily hydraulic, actuated by means of electrical solenoid valves.

Abstract: The present invention involves a carriage of the type commonly used in skyline logging operations. The invention facilitates moving logs along a suspended skyline by means of a hoisting system built into the carriage comprised of a radio controlled electronics system, an internal combustion power plant, proportional controlled hydraulically driven skidline sheave, a skidline clamp and skyline clamp. A novel method of pump control keeps the internal combustion engine operating within its power band. The volume output of the pump is controlled by engine RPM to adjust the pump's load on the engine. Combined operation of the various controls on the carriage, in conjunction with the controlled operations of the yarder winch at the end of the skyline result in a system well suited for efficient logging operation. The choker/setter (ground crew) and the yarder are able to remotely control the carriage operation as a team.

Abstract: A method for installing conduits on a mountain is provided. The method includes placing at least one cable longitudinally across a ridge of the mountain and installing the at least one cable on a front side and a back side of the mountain. The front and back sides of the mountain are bounded by the ridge, and the at least one cable crosses over the ridge. The cable is positioned along both the front side and the back side of the mountain. At least one conduit is moored to the at least one cable on the front side of the mountain, and at least one cable is anchored on the back side of the mountain.

Abstract: A method for installing conduits etc. on a mountain using cables, comprising the steps of (1) having at least one cable cross over the ridge of the mountain, installing said at least one cable on a mountainside and another mountainside opposite that mountainside that is bounded by the ridge of the mountain from that mountainside, positioning the cable along both mountainsides, (2) directly or indirectly mooring conduits, underground multi-purpose ducts, inlets (“conduits etc.”), through which water, fuel gases, electric wiring etc. pass, to the longitudinal cable that is installed on one mountainside, (3) directly or indirectly mooring a base plate or a frame member to the longitudinal cable that is installed on one mountainside, fixing on the base etc. or the side plates conduits, underground multi-purpose ducts, or inlets, through which water, fuel gases, electric wiring etc.

Abstract: A method for installing conduits on a mountain is provided. The method includes placing at least one cable longitudinally across a ridge of the mountain and installing the at least one cable on a front side and a back side of the mountain. The front and back sides of the mountain are bounded by the ridge, and the at least one cable crosses over the ridge. The cable is positioned along both the front side and the back side of the mountain. At least one conduit is moored to the at least one cable on the front side of the mountain, and at least one cable is anchored on the back side of the mountain.

Abstract: An Integrated Balanced Wire Rope Reeving System for Cargo Container Handling Cranes wherein the same ropes perform both load hoist and trolley traversing operations.

Abstract: A skyline operates on a mountain side from an upper tail-block that is positionable along a transverse cable extending between two elevated anchor points. A balloon is attached to the upper tail-block to assist in supporting the weight of the skyline cable, and also the weight of the drop line carriage mounted on the skyline.

Abstract: A cable crane system includes a main cable stretched between two points, a transverse trolley traveling along the main cable, a traction cable for driving the trolley, a bucket hung by a hanging cable, a transverse winch for driving the traction cable for driving the trolley between a transportation start position to a transportation end position, a vertical winch for retracting and extracting the hanging cable for lifting the bucket up and down, and driving means for the transverse and vertical winches.

Abstract: A skyline logging system which uses an improved carriage which can traverse intermediate supports, which can lift both ends of a load of logs, which has a telescoping center beam to accommodate different lengths of logs, which carries an on-board engine so that it is self contained as to power to haul logs up to the carriage, and which is radio controlled so that a man on the ground can perform all of the logging operations.

Abstract: An improved carriage for use in a skyline logging system simultaneously utilizing more than one load cable with the same carriage for connecting to and dragging separate "turns" of logs from the area in which they were felled to a landing area next to the yarder machine.

Abstract: A remote controlled slack pulling log skidding carriage is provided for feeding a slack drag line toward a log to be skidded. A drive sheave rotatably mounted in the carriage is operated by a hydraulic motor. The fluid to operate the motor is stored in one or more accumulators, and a radio controlled valve starts and stops the flow of fluid to the motor. A mechanically operated hydraulic pump also is provided to recharge the accumulators during a skidding operation. A reciprocating locking assembly is provided to alternately lock the carriage to the skyline or to the slack line.

Abstract: Apparatus for use in a skyline logging system. A carriage mounted for reversible travel on a skyline is transported by a skidding line connected to a hoisting line which feeds through the carriage for attachment to logs. A tagline is attached at one end to the skidding line and its other end is received by a take-up reel mounted on the carriage which is disengageably drivingly connected to a radio-controlled unidirectionally operable power-operated drive motor mounted on the carriage. When operated in an engaged mode, the reel takes up the tagline and hence the skidding line. The reel is allowed to pay out the tagline in a disengaged mode. Additionally, the motor is connected to a pinch-roll device, also mounted on the carriage, for pulling the hoisting line into and through the carriage in cooperation with the take-up reel.

Abstract: A carriage is described for utilization along a highline for the purpose of guiding a mainline along the highline between a yarder at a landing and an anchor point along an adjacent hillside. The carriage is suspended by freewheeling sheaves on the skyline. The mainline also extends through the carriage. A highline clamp and mainline clamp are provided within the carriage and are actuated to clamp and release the highline and mainline relative to the carriage frame. Actuation is accomplished through the mainline winch at the yarder by producing tension along the mainline and by moving an abutment on the mainline against the actuator.

Abstract: A rigging arrangement and yarder are disclosed for yarding in which a single cable is used. This cable is anchored at a main storage drum on a yarder and preferably at an anchor in the vicinity of the tail block. The single line serves as a running skyline for supporting a carriage and includes several loops around a tram drum and an idler drum (but only one layer on said drums) which operate to hold cable or to reel equal amounts of cable in or out to both the yarder side and the anchor side of the carriage to move the carriage without introducing slack into either side. Since only a single layer of cable is wound on the tram and idler drums, no energy is lost dealing with varying speeds and torques caused by changing effective diameters, thus saving energy and weight of equipment.

Abstract: A carriage carrying a match block moves away from a slider by gravity along a tightline from a mast of the slider, and is pulled back to the slider with a turn of logs by a mobile mainline unit of a skidder. The tightline then is lower the carriage, and the mainline may be freed from the block to permit the mainline unit to move the logs to a loading station or the turn of logs may be detached from the mainline and the operation repeated.