A link coupler for coupling two lengths of different sized chain together and facilitating movement of the two lengths of different sized chain is provided. Also provided is an assembly of the link coupler with a dual chainwheel, a small chain, and a large chain. The link coupler includes a body, a small-chain link coupler coupled with the body at a first end of the body, and a large-chain link coupler coupled with the body at a second end of the body. The dual chainwheel includes a small wildcat profile and a large wildcat profile. The small chain is coupled with the small-chain link coupler, and the large chain is coupled with the large-chain link coupler.

A link coupler for coupling two lengths of different sized chain together and facilitating movement of the two lengths of different sized chain is provided. Also provided is an assembly of the link coupler with a dual chainwheel, a small chain, and a large chain. The link coupler includes a body, a small-chain link coupler coupled with the body at a first end of the body, and a large-chain link coupler coupled with the body at a second end of the body. The dual chainwheel includes a small wildcat profile and a large wildcat profile. The small chain is coupled with the small-chain link coupler, and the large chain is coupled with the large-chain link coupler.

A cable recovery machine, comprising at least one traction module configured to hold and draw at least one cable, in particular of a cable laying plant, and at least one cutting module located downstream of the traction module and able to receive the cable that is introduced into the cutting module in a direction of feed (X1); the cutting module comprises at least one cutting unit provided with at least one cutting blade and integral with a shaft made to rotate by means of corresponding drive means, so that by rotating the shaft, the cutting unit is made to rotate and cuts the cable when the latter enters the cutting module in the direction of feed (X1).

A cable recovery machine, comprising at least one traction module configured to hold and draw at least one cable, in particular of a cable laying plant, and at least one cutting module located downstream of the traction module and able to receive the cable that is introduced into the cutting module in a direction of feed (X1); the cutting module comprises at least one cutting unit provided with at least one cutting blade and integral with a shaft made to rotate by means of corresponding drive means, so that by rotating the shaft, the cutting unit is made to rotate and cuts the cable when the latter enters the cutting module in the direction of feed (X1).

A cable recovery machine, comprising at least one traction module configured to hold and draw at least one cable, in particular of a cable laying plant; the traction module comprises a frame on which one or more traction wheels and one or more idle wheels are positioned; between the traction wheels and the idle wheels a space is defined for the passage and traction of the cable to be recovered; the idle wheels are provided with a support connected in a mobile manner to the frame of the traction module and provided with actuators configured to press the idle wheels against the cable that passes between them and the traction wheels, so that the space between the idle wheels and the traction wheels can be automatically adjusted on the basis of the external diameter (D1, D2) or thickness of the cable drawn

A cable recovery machine, comprising at least one traction module configured to hold and draw at least one cable, in particular of a cable laying plant; the traction module comprises a frame on which one or more traction wheels and one or more idle wheels are positioned; between the traction wheels and the idle wheels a space is defined for the passage and traction of the cable to be recovered; the idle wheels are provided with a support connected in a mobile manner to the frame of the traction module and provided with actuators configured to press the idle wheels against the cable that passes between them and the traction wheels, so that the space between the idle wheels and the traction wheels can be automatically adjusted on the basis of the external diameter (D1, D2) or thickness of the cable drawn

A Harvey E/R (expandable/retractable) nasal oxygen cannula system enables a person that needs assistance with additional air or oxygen to receive this assistance without creating other hazards or limits on their movement. The system uses a retractable tube that stretches or other wise expands and contracts as the person increase or decreases their distance from the source of the assisted air or oxygen.

The present invention relates to a device (10) for controlling supply of a filament (14). The device (10) includes a grooved rotatable wheel over which the filament (14) runs and biasing means (22 & 24). The wheel (12) has a hub (16) and a pair of flexible flanges (18 & 20) extending radially from the hub (16). The biasing means (22 & 24) are adapted in use to force the flexible flanges (18 & 20) to bend towards each other so as to embrace the filament (14) thereby pressing the filament (14) tight against the hub (16).

A portable rope drive and guiding apparatus operable by a single user is disclosed. The apparatus includes a receptacle defined by a first side wall, a second side wall, a first end wall and a second end wall, with a vertical opening between a top edge and a bottom edge for receiving the rope. The apparatus further includes a powered drive wheel mounted between the first side wall and the second side wall, and having a friction-bearing outer perimeter to drive the rope through the receptacle. The apparatus further include a guide wheel mounted between the first side wall and the second side wall, opposite the drive wheel, the guide wheel having a concave outer perimeter that corresponds to and guides the rope through the receptacle as the rope is driven by the drive wheel.

A portable rope drive and guiding apparatus operable by a single user is disclosed. The apparatus includes a receptacle defined by a first side wall, a second side wall, a first end wall and a second end wall, with a vertical opening between a top edge and a bottom edge for receiving the rope. The apparatus further includes a powered drive wheel mounted between the first side wall and the second side wall, and having a friction-bearing outer perimeter to drive the rope through the receptacle. The apparatus further include a guide wheel mounted between the first side wall and the second side wall, opposite the drive wheel, the guide wheel having a concave outer perimeter that corresponds to and guides the rope through the receptacle as the rope is driven by the drive wheel.