Mechanism for forming bobbins, with automatic lowering, characterized in that it consists essentially of a gear wheel driven by an endless screw fixed to the drive shaft, said wheel going on a drum with which it is joined by means of a sliding key requested, for means of springs, to enter into its keyway, with which it drags to said drum in which one of the ends of the determinative traction chain is fixed, when coiling of the elevation of the bearing platform hoops, being able to free the enclave between wheel and drum by means of a device that forces the key to come out of its keyway overcoming the action of the springs and allowing the retraction of the drum and descent of the platform. (Machine-translation by Google Translate, not legally binding)
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