A drilling apparatus is provided. The drilling apparatus according to one aspect of the present invention comprises: first and second moving modules; first to third drawworks for vertically moving the first and second moving modules; a wire for successively connecting the first drawwork, the first moving module, the second drawwork, the second moving module and the third drawwork; a first fixing drum positioned between the first drawwork and the first moving module so as to support the wire; and a second fixing drum positioned between the second moving module and the third drawwork so as to support the wire.

A safe metal free and hookless winch rope includes a stopper knot formed at an end of the winch rope that is opposite an end of the winch rope intended to be wound around a winch, and a plurality of brummel style openings formed inline along at least a portion of the winch rope. The stopper knot can be selectively inserted into any brummel style opening of the plurality of brummel style openings to wrap around an object during a winch operation and the stopper knot will be securely held in the selected brummel style opening when the winch rope is under tension during the winch operation.

A system that includes a first winch assembly having a first structure on which a fuel hose is configured to be spooled and unspooled, the first structure having a first rotational axis. The system also includes a second winch assembly located rearward of the first winch assembly, the second winch assembly includes a second structure on which a messenger line is configured to be spooled and unspooled, the second structure having a second rotational axis and being rotatable between first and second rotational positions. Upon the second structure being in the first rotational position the second rotational axis is non-orthogonal to the first rotational axis. Upon the second structure being in the second rotational position, the second rotational axis is orthogonal to the first rotational axis. The second structure including an axial through opening through which the fuel line is configured to pass when the second structure is in the second rotational position.

A system that includes a first winch assembly having a first structure on which a fuel hose is configured to be spooled and unspooled, the first structure having a first rotational axis. The system also includes a second winch assembly located rearward of the first winch assembly, the second winch assembly includes a second structure on which a messenger line is configured to be spooled and unspooled, the second structure having a second rotational axis and being rotatable between first and second rotational positions. Upon the second structure being in the first rotational position the second rotational axis is non-orthogonal to the first rotational axis. Upon the second structure being in the second rotational position, the second rotational axis is orthogonal to the first rotational axis. The second structure including an axial through opening through which the fuel line is configured to pass when the second structure is in the second rotational position.

A headlock lift including a base having a left column and a right column, with each column having a lower side and an upper side. A forward cross-spinning beam and a back cross-spinning beam both connect to the upper side of each column. A moveable gate having a topside, a bottom side, and a plurality of vertical poles fixably attachable to the top side and the bottom side, the moveable gate is slidably received over left and right pipes positioned parallel to the left and right columns. Two pulleys are fixed to the forward cross-spinning beam and two winches are fixed to the back cross-spinning beam. Two cables are continually disposed between the two winches and the two pulleys, with the cables each having a free operating-end attachable to the topside of the moveable gate and a captive-end attachable to a respective one of the winches.

A headlock lift including a base having a left column and a right column, with each column having a lower side and an upper side. A forward cross-spinning beam and a back cross-spinning beam both connect to the upper side of each column. A moveable gate having a topside, a bottom side, and a plurality of vertical poles fixably attachable to the top side and the bottom side, the moveable gate is slidably received over left and right pipes positioned parallel to the left and right columns. Two pulleys are fixed to the forward cross-spinning beam and two winches are fixed to the back cross-spinning beam. Two cables are continually disposed between the two winches and the two pulleys, with the cables each having a free operating-end attachable to the topside of the moveable gate and a captive-end attachable to a respective one of the winches.

A hoist system having a drum primarily self-contained within a batten, for raising and lowering lighting, sound equipment, curtains and the like, often in a performance environment. The compact system is highly scalable to a variety of spaces and applications, including school and public theaters and concert halls, as well as some homes, private business, etc. The hoist system may be adapted with safety mechanisms including an overspeed detector, which may comprise a centrifugal detection mechanism coupled to an elongate member of the system; dampening means; a compact mechanism for trimming or adjusting an operative length of elongate member; stabilizing pipe shaft bearings; elongate member diverter pulley mechanisms load balancing termination points. Additional features include various alternative combination hoist implementations and orientations, and alternative incorporated attachment mechanisms for use with the hoist system.

A hoist system having a drum primarily self-contained within a batten, for raising and lowering lighting, sound equipment, curtains and the like, often in a performance environment. The compact system is highly scalable to a variety of spaces and applications, including school and public theaters and concert halls, as well as some homes, private business, etc. The hoist system may be adapted with safety mechanisms including an overspeed detector, which may comprise a centrifugal detection mechanism coupled to an elongate member of the system; dampening means; a compact mechanism for trimming or adjusting an operative length of elongate member; stabilizing pipe shaft bearings; elongate member diverter pulley mechanisms load balancing termination points. Additional features include various alternative combination hoist implementations and orientations, and alternative incorporated attachment mechanisms for use with the hoist system.

We generally describe a winch (100) comprising: a plurality of ropes (130, 140) coupleable to a first load (200) or to different respective second loads (200, 210); a support frame (110); and a first roller (150) moveably coupled to the support frame (110), wherein a first rope (150) of the plurality of ropes (130, 140) is moveable over the first roller (150); wherein a movement of the first roller (150) is configured to shorten and/or lengthen a usable length of the first rope (140) of the plurality of ropes (130, 140), and wherein the shortening and/or lengthening of the usable length of the first rope (140) is configured to raise and/or lower the first load (200) or one of the second loads (200, 210) to which the first roller (150) is coupleable via the first rope (140).

We generally describe a winch (100) comprising: a plurality of ropes (130, 140) coupleable to a first load (200) or to different respective second loads (200, 210); a support frame (110); and a first roller (150) moveably coupled to the support frame (110), wherein a first rope (150) of the plurality of ropes (130, 140) is moveable over the first roller (150); wherein a movement of the first roller (150) is configured to shorten and/or lengthen a usable length of the first rope (140) of the plurality of ropes (130, 140), and wherein the shortening and/or lengthening of the usable length of the first rope (140) is configured to raise and/or lower the first load (200) or one of the second loads (200, 210) to which the first roller (150) is coupleable via the first rope (140).