Vertically adjustable rotary shelf assembly

A rotary shelf assembly mechanism, said mechanism comprising:

• (a) first and second mounting brackets spaced apart and opposing each other;
• (b) a tubular post disposed lengthwise between the first and second mounting brackets supporting one or more shelves;
• (c) a first bearing element secured to the post adjacent to the first end of the post by a securing bolt which is capable of engaging the first mounting bracket for rotation about the axis of the post;
• and
• (d) a second bearing element secured to a threaded height adjustment means by a bolt and being capable of engaging the second mounting bracket, the threaded height adjustment means comprising a knurled cylindrical member and a toothed cylindrical member;
• an opening in the post through which the knurled and toothed cylindrical members are accessible for manual adjustment;
• and knurled and toothed cylindrical members connected to a threaded shaft, wherein the threads run through the second bearing member;
• a notched cylindrical collar surrounding the shaft of the threaded adjusting means, wherein the notched cylindrical collar fits within the tubular post;
• wherein the tubular post is restricted from rotation by said notch on the cylindrical collar;
• wherein the post rests on a lip of a cylindrical portion of the collar;
• and wherein the collar is restricted from vertical movement by a restricting means connected to the threaded shaft.