single or multiple helixes the cylinder could be cut in other patterns which respond to rotation in opposed directions by an increase or decrease in diameter different materials can be used for coil clutch 92 and surface treatments can also be incorporated to improve grabbing action upon constriction or engagement other ratchet mechanisms to obtain the clutching action for single direction rotation are also contemplated within the scope of the invention in another feature of the invention a single spring can be used instead of coil springs 52 and 54 other spring types such as belleville washer stacks compartments with compressible gases and fluid chambers with controlled leakage rates can be used as the source that provides the force to allow flow to resume setting the stage for a jar in the up or down direction to reduce tool length a single spring system or equivalent system acts as the force to allow flow to resume whether jarring in the up or the down directions this is to be compared to other tools such as the jar tool shown in u s pat no 5 803 182 that requires discrete springs for the jar up valve and the jar down valve thereby adding complexity and length.