SYSTEM PREVENTING ARCHIVING OR BOOK STORAGE SYSTEMS MANUALLY-AND ELECTRICALLY-MOVING ON TRACKS FROM FALLING DOWN BY NATURAL OR MECHANICAL INTERVENTIONS

摘要

The invention is intended to prevent archiving or book storage systems manually- and electrically-moving on tracks from falling down by natural or mechanical interventions. Said system is installed at the top of the roof-shelter and at the ends of the manually-and electrically-operated archiving and book storage systems (9 to 16) and (from 40 to 47), and comprises: a steel frame (20, 21) for the incorporation of primary and secondary accessories and mechanisms, and a steel fulcrum-retainer 27 indissolubly connected to the steel frame 20. (unclear source text)