Mechanical automatic warp changing mechanism in mechanical looms that is essentially characterized by presenting from the drive motor shaft a changeable transmission to vary the speed that drives a main shaft which by a set of grenades moves in one direction or another a worm that by means of a toothed crown, it drives the shaft of the fabric folder and to a set of planetary pinions and at the same time to the same main axis by means of variable transmission of pulleys or friction, it drives a secondary axis that also by a worm and a toothed wheel moves another concentric crown that attacks another set of planetary pinions solidary of the first planetary game being the axis of the solitary warp developer of the common support of the planetary pinions turning said axis of the warp developer with velocity resulting from the rotation of the planetary pinions and the drive from the secondary axis . (Machine-translation by Google Translate, not legally binding)
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