US Patent 9776550 Tensioning device

A tensioning device uses two perpendicular gears so that common hand tool such as wrenches or socket wrenches can be used to drive the gears to rotate a barrel having two oppositely threaded apertures. Shafts having complementary threads inserted into the threaded apertures and means for connecting chain, wire rope, cable, or straps will be extended or retracted when tools rotate the driving gear. End effectors on the shafts include hooks or clevises for securing cargo, pads for use as a jack, and ball ends for use as an adjustable mechanical linkage such as the top link of a three-point agricultural hitch. Load locks can secure the threaded shafts from unwanted rotation while in transit or in other service.