Abstract: Disclosed herein is a handle for a tool having a shank, which handle comprises identical first and second half sections in mating engagement, which first and second half sections each include cooperating wall means defining a socket for receiving the shank and, when the shank is received in the socket, for preventing relative movement between the half sections in each of three planes mutually perpendicular to each other.

Abstract: Disclosed herein is a bicycle comprising a frame, a pair of wheels supporting the frame, a sprocket fixed to one of the wheels, a drive member rotatably carried by the frame, a pair of pedals connected to the drive member, a plurality of links carried by the drive member for common rotation therewith and for pivotal movement relative thereto, a driven member, an inner guide ring, an arm supporting the inner guide ring on the frame for transverse movement relative to the rotary axis of the drive member, surfaces on each of the outer ends of the links and on the driven member and on the inner ring for mounting the driven member for common movement with the inner ring and for rotation relative thereto and for effecting rotation of the driven member in response to rotation of the drive member, a cylinder-piston arrangement on the frame for displacing the inner ring relative to the rotary axis of the drive member to vary the rate of rotation of the driven member relative to the drive member, and an endless member