Abstract: A winch bar has an insertion portion adapted to fit in openings of a winch drum of non-circular cross-section, whereby the winch bar cannot rotate relative to the openings to present hazards of injury to persons or property which can result with prior art circular drum openings and circular cross-section bars.

Abstract: A winch bar has an insertion portion adapted to fit in openings of a winch drum of non-circular cross-section, typically square or hexagonal, whereby the winch bar cannot rotate relative to the openings to present hazards of injury to persons or property which can result with prior art circular drum openings and circular cross-section bars.

Abstract: A winch bar has an insertion portion adapted to fit in openings of a winch drum of non-circular cross-section, typically square or hexagonal, whereby the winch bar cannot rotate relative to the openings to present hazards of injury to persons or property which can result with prior art circular drum openings and circular cross-section bars.

Abstract: A binder for releasibly retaining pages as well as covers which include a plurality of mating pairs of semicircular rings whose peripheries essentially are all exposed so that the paper or covers can be extended therefrom essentially 360 degrees therearound. The mating pairs of semicircular rings are forced together or retained in an open position either by an overcenter mechanism at their inner end or a lockable hinge structure, either one of which extends primarily within the peripheries of the semicircular ring pairs when they are in their closed positions.

Abstract: Exercise apparatus which includes pedaling apparatus carried on a frame, the pedaling apparatus including a first pedal on a crank arm fixed to a first shaft rotatably mounted on the frame, a second pedal on a second crank arm fixed to a second shaft rotatably mounted on the frame, both shafts having a common axis, and means for the selective angular indexing of the first crank arm relative to the second crank arm between at least a first position in which both crank arms are disposed in the same angular orientation and a second position in which the first and second crank arms extend in opposite directions from their common axis.