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Mechanical doll of the type that includes an electric motor powered by dry batteries characterized in that the rotational movement of the electromotor shaft, duly multiplied, is transmitted to an axis that has two wheels at its ends on whose external faces are inserted separate off-center shafts with respect to the axis of rotation and out of phase with each other 180º whose rods are inserted through the longitudinal windows that offer separate braces whose other ends are integral with the axes that the arms carry, so that the out of phase rotation of the rods promotes the movement of alternate agitation of the arms. (Machine-translation by Google Translate, not legally binding)
A cooperating pair of rotors having helical ridges and grooves therebetween, with a jacket angle of less than 360 °, adapted to rotate about parallel axes in the working space of a screw rotor machine.
Improvements in and relating to coupling between the shaft ofa small electric synchronous motor capable of rotating in either oftwo directions andan effectively loaded shaft
Improvements in and relating to transmissions between a shaft ofa self-starting synchronous motor adapted to rotate arbitrarily in either oftwo directions andan effectively loaded output shaft