Abstract: A tandem pulley includes a support bracket having the shape of an inverted U. The support bracket defines a through hole. A pair of sheaves is arranged in line inside the support bracket. Each sheave is mounted rotating freely around a spindle fixed to the support bracket. A carabiner is fitted in the through hole. A connector is configured to connect the support bracket with the carabiner. The connector is configured in such a way as to allow rotation of the carabiner around an axis parallel to the spindles of the pair of sheaves. A spring is connected to the support bracket, the spring being arranged to exert a force on the carabiner biasing the latter to a rest position by rotation of the carabiner.

Abstract: A horizontal lifeline traversing device is capable of traversing intermediate lifeline supports without detachment from the lifeline but is easily attached to or detached from the lifeline. A paddle wheel having a plurality of radially spaced apart paddles prevents the device from vertical movement. The paddles are made of first and second sets of paddles rotatable about the same axle. The first set is substantially fixed on the axle but the second set is movable axially between a first position where it is axially spaced from the first set and a second position where it is in substantial axial alignment with the first set. A spiral spring biases the second set into the first position. By rotating the second set of paddles slightly, it can be moved axially into the second position where the device can be attached to or detached from a horizontal lifeline.

Abstract: A purse seine link (10) having a roller head (30) attached to body (20) by head pivot (32). Latch mechanism (22) allows for one step release of roller head (30) to release cable (8).

Abstract: A clothes basket combination adapted for movement along a clothes line by means of attachment of a basket component to a pulley device which is adapted for movement along the clothes line. The pulley device includes a downwardly depending arm substantially centered below the pulley device. The clothes basket includes adjustable strap means connecting the clothes basket to the pulley device. The combination also includes a removable clothes pin container adaptable for attachment on a side of the clothes basket.

Abstract: A diverse variety of high speed gravity cableway rides in which a rider on a pulley block car descends a mountainside and generally stops by frictional forces, due to the design of the cable arc, before hitting the lower cable support point. In some forms, the rider may control his speed with a braking device and use a ski-lift to return to the top of the hill. In all form suitably safe embarking and disembarking platforms or procedures are employed.

Abstract: The invention relates to a device for guiding a moving body (1) along a tensioned cable (4) attached at intervals to a building facade (3) and at a given distance therefrom. It comprises a pivoting device (7) formed by a pair of stars (8) parallel, coaxial and integral with one another, the points (9) of which face one another, pivoting about an axis perpendicular to the cable axis (4), the axis of the pair of stars (8) being rotationally integral with the structure of the guided moving body (1).

Abstract: A load attachment system comprises an elongate element secured with respect to a supporting structure and a load attachment, traversing device engaged therewith for sliding movement therealong to traverse intermediate attachment points for the elongate element without detachment therefrom. The traversing device includes a pair of rotary members which cooperate to define a channel for receiving and locating the elongate element. The rotary members are supported on mounting structure adapted to allow relative movement of the rotary member to narrow, or increase, the width of the channel. A load attachment connection is provided on the mounting structure to cause loading of the rotary members, under loads applied in directions away from the elongate element, so as to firmly maintain them in relative positions in which the channel is narrowed thereby securing the elongate element in the channel and reducing the possibility of detachment of the load from the elongate element.

Abstract: An eyelet of high strength materials is disclosed herein having an upper end equipped with a tapered roller for movably supporting the eyelet on a cable and having a lower end equipped with a similar roller for supporting the end of the lower end of the eyelet from chaff by the cable. The eyelet is composed of stainless steel in the form of an oval-shaped rod in front elevation having a U-shaped upper end joined with a U-shaped lower end by outwardly diverging side members. A selected side member includes a spring-released latch normally biased closed to maintain the load-supporting cable captured within the eyelet between the roller. Lubricating fittings and disassembly construction for maintenance and repair is employed in mounting the rollers.

Abstract: A cable-guided messenger comprises a solid, one-piece, integral member having a substantially cylindrical shape and an axis, the member having an axially extending throughgoing opening, a transverse slot extending transversely to the axis and communicating with the opening, and two longitudinal slots extending substantially parallel to the axis and communicating with the transverse slot and the opening, so that a messenger can be fitted on a cable by inserting the cable into the transverse slot of the member and then turning the member so that the cable passes through the longitudinal slots and then into the opening.

Abstract: A linkage mechanism for a safety attachment system in which a pair of traversing devices are engaged with an elongate safety line for sliding movement therealong past intermediate securing devices for the safety line. The traversing devices are coupled to the mechanism, and a lanyard connected to the mechanism applies a force thereto, when the lanyard is under tension, in a direction generally away from the safety line. The mechanism is adapted to cause relative movement of the traversing devices along the safety line when the force is applied thereto by the lanyard. An actuator, preferably using a spring, is provided in the mechanism to cause opposite relative movement of the traversing devices when the force is reduced.

Abstract: An improved safety control mechanism for a pulley apparatus of the type comprising main support bars having at least two wheels mounted at their centers a spaced distance apart between the bars and a swing arm assembly pivotally connected to the bars at a point between the centers of the wheels, the swing arm assembly comprising a pair of arms straddling opposing surfaces of the bars and pivotally connected to the bars by a main pivot mechanism extending through complementary aligned apertures in the arms and the bars, the improvement comprising a second bolt mechanism extending through a second complementary aperture disposed in either the bars or the arms and a slot disposed in the other of the bars or the arms; the second aperture or the slot provided in the bars being disposed in the second distance between the center mountings of the wheels; the second aperture or the slot provided in the arms being aligned with the other of the second aperture or the slot provided in the bars with the arms and the bars

Abstract: A load-transfer device comprises a pair of rotary members each having an annular series of projecting peg-like elements, and a location member having arcuate tracks in its opposite sides to receive tip portions of the elements respectively. A wire or other elongate element extends beneath the location member and the upright parts of U-shaped clips supporting the wire are received in the spaces between the elements when the device encounters such clips, whereupon the members rotate relative to the location member to permit the clips to pass through the device.

Abstract: A load-transfer device comprising at least one rotatable wheel having a series of equally spaced peripheral recesses, a guide element mounted at a peripheral part of the wheel, and a load connection element for attachment of a load to the device. The wheel and guide member have cooperating portions allowing rotation of the wheel about its axis relative to the guide member to allow transversely extending support elements, which the device encounters in use, to pass through the device in one of said recesses as the wheel rotates relative to the guide member. In order to enable the device to withstand relatively heavy loading, interengaging plug and socket portions are provided between the connection element and an adjacent face of the wheel.

Abstract: A track is provided by a series of rigid or semi-rigid members supported solely or principally at their ends to extend across the track at spaced locations along the track. A load-transfer device is provided to engage with the track for movement along the track. The device comprises at least one rotary wheel having several equally spaced recesses provided in its periphery and a guide member mounted on the wheel, the wheel and guide member having cooperating relatively rotatable surfaces to allow rotation of the wheel relative to the guide member. The rigid or semi-rigid members are received in respective recesses in the wheel when the device moves along the track and the wheel rotates relative to the guide member to allow such members to pass through the device with at least one of those members being located with respect to the wheel by the guide member at any one time.

Abstract: An elevated downhill transport system is provided with a cable system and appropriate towers to support the cable along a variable downhill course. A single cable only, being necessary, a cable trolley is also provided that prevents the carriage from accidently leaving the cable during any part of the descent. The system relies on no outside power except gravity for the descent. Ascent can be provided for by pre-existing ski lift equipment. The entire system is simple, inexpensive and transportable, lending itself to portable operation.