Drop ceiling hanging system

A system for adjustably interconnecting a drop ceiling and ceiling joist, the system comprising in combination:

• a joist screw having a threaded tapered forward end and an arcuate rearward end, the joist screw adapted to be threadably secured within a ceiling joist;
• a linkage having a length an upper arcuate end and a lower end, the upper arcuate end adapted to be removably interconnected with the arcuate rearward end of the joist screw thereby hanging down from the joist screw;
• an adjustment cylinder having an upper end, a lower end, an outer cylindrical surface, and an interior cylindrical passage, the upper end of the outer cylindrical surface secured to the lower end of the linkage, a plurality of upwardly oriented locking elements positioned upon the interior cylindrical passage, wherein two sets of spaced locking elements are provided which are integral with the cylinder and further wherein the locking elements of each set are diametrically opposed;
• a J-hook constructed from metal and being approximately twice the length of the linkage, the J-hook having an upwardly extending threaded extent including a plurality of adjacent frusto-conical segments, and a lower drop ceiling frame supporting portion, the threaded extent of the J-hook being adjustably supported within the interior cylindrical passage with the locking elements permitting movement of the threaded extent only toward the upper end of the adjustment cylinder, the drop ceiling frame supporting portion adapted to be inserted into a hole formed within the drop ceiling frame, a layer of resilient material covering the drop ceiling frame supporting portion of the J-hook, the resilient material functioning to prevent any damage to the drop ceiling.