Announcement device by eclipse of figures. (Machine-translation by Google Translate, not legally binding)

摘要

An annunciator device by eclipse of figures, characterized essentially by the presence of two flexible strips, threads or the like, which are joined at one of their ends, respectively, to those of a transferable plate optionally, passing said threads or strips, or others, through a central groove of a slide, and each thread or strip, or other, coming out through lateral grooves of this to join the fixed part of the box or envelope of the system. (Machine-translation by Google Translate, not legally binding)