Method of and devices for lubricating rotating torque transmitting couplings

Claim 1

In a torque transmitting coupling for use in a continuously operating drive train, the combination comprising: a. a pair of opposed coupling members; b. an intermediate coupling member drivingly interconnecting said opposed coupling members and having lubricating passages therein; c. a lubricating ring comprising a unitary one-piece body having a centrally disposed groove in the surface of its inner face and frictionally mounted on said intermediate coupling member for rotation therewith, but which is capable of being held stationary relative thereto so that rotation of said ring can be periodically interrupted for introducing lubricant into the groove of said ring, said groove being confluent with the lubricating passages in said intermediate coupling member; d. a pair of spaced-apart O-rings mounted in the inner face of said lubricating ring, one on each side of said lubricating groove therein and contacting said intermediate coupling member for sealingly and frictionally engaging said lubricating ring to said intermediate member; e. means attached to and projecting from said lubricating ring for movement therewith, said means comprising at least one peg extending from a side of said lubricating ring and being adapted to be grasped by an operator for holding said lubricating ring stationary while said coupling is rotating; and f. means for retaining said lubricating ring on said intermediate member, said retaining means comprising a portion of said peg which projects into an annular groove provided in the outer surface of said intermediate coupling member for retaining said lubricating ring thereon.