PERFECCIONAMIENTOS EN APARATOS PARA HACER GIRAR ARTICULOS ALARGADOS ALREDEDOR DE SU EJE LONGITUDINAL Y PROPULS R DI- CHOS ARTICULOS LONGITUDINALMENTE.

摘要

Manipulator apparatus for rotating an elongated article such as a rail about its longitudinal axis and propelling such rail longitudinally. The apparatus includes a carriage, a drive mechanism for the carriage, a rail gripping mechanism, and a rail rotating mechanism. The apparatus is characterized by instant response to fingertip control. Retractable rollers are disclosed for supporting the body of the article.