Abstract: A low vibration helicopter rotor including a four-bar linkage arrangement which permits the straight line connecting the center of gravity of each pair of diametrically opposed rotor blades to intersect the rotor hub geometrical center at all cyclic conditions.

Abstract: A respacer and/or reorienter feed arrangement is operative for continuously feeding cigar wrappers in proper spaced-apart relationship and/or orientation to a cigar wrapping station of a multi-station cigar wrapping machine which includes a cigar bunch supply station, a cigar wrapper supply station, and a conveyor for conveying the bunches to a cigar wrapping station at which the wrappers are spirally applied about the bunches. The method of respacing and/or reorienting the wrappers includes conveying the latter in a predetermined arranged relationship and/or orientation in which successive wrappers are located relative to one another at positions selected for optimum compact transport purposes, and continuously moving each successively leading wrapper, one after another, relative to its next successively trailing wrapper, from its respective optimum compact transport position to and through the cigar wrapping station.