SYSTEM DYNAMO Multiplying SPEED BIKE, TANDEMS and the like.

摘要

Dynamo system with overdrive for tandem bicycles or characterized simialres that provided in the projecting portion of the fixed cone hub of the bicycle of a ring or washer fixed makes race rolling and holding a fixed casing in which rotates a pulley throat centered bearing or sliding bearing said pulley respective friction-pulley shaft housed in an oscillating block in which the inductor and the armature are mounted.