Apparatus for suspending a planter

Claim 1

A rotative apparatus for pendantly suspending an object comprising: (a) coaxially spaced upper and lower opposed toothed members each possessing an even number of uniformly spaced vertically disposed teeth in a circular sawtooth array, each tooth having a vertical edge parallel to the center axis of said toothed members and a contiguous angled edge meeting with said vertical edge as an apex at the outermost reach of said teeth and meeting with the next adjacent vertical edge to form a substantially V-shaped bight at the base of said teeth, the direction of the angled edges of the teeth of one toothed member being opposite to the direction of the angled edges of the teeth of the opposed toothed member, said toothed members being aligned such that the vertical edges of the teeth of one toothed member are opposite the angled edges of the teeth of the opposed toothed member; (b) means for maintaining said toothed members in fixed spaced relationship; (c) a pull rod coaxially positioned with respect to said toothed members, extending below said lower toothed member and adapted for linear movement along said axis; (d) means for pendantly suspending an object from said pull rod at a site below said lower toothed member; (e) a bearing pin transversely associated with said pull rod adjacent the uppermost extremity thereof and adapted to engage said teeth at two sites diametrically across said axis; (f) means for causing said pull rod to rise when no significant downward force is applied thereto; and (g) means for attaching said apparatus to an overhead support; whereby said pull rod rises when downward force is removed therefrom, causing said bearing pin to engage the angled edges of the teeth of said upper toothed member and traverse said edges while rotating said pull rod until stopping at bights in said upper toothed member, and said pull rod descends when downward force is restored thereto, causing said bearing pin to engage the angled edges of the teeth of said lower toothed member and traverse said edges while rotating said pull rod until stopping at bights in said lower toothed member.