An announcing plaque (Machine-translation by Google Translate, not legally binding)

摘要

An annunciator plate characterized by a flat, broken or curved panel, which, whether or not it is provided with a foot for its support, has attached a support that is of a lamp holder that holds the corresponding electric bulb vertically. in which it is joined and centered in its upper part or simply placed in the same way above it, a vertical spike of material adequately resistant to wear, which supports resting on its tip, a concave cap also made of hard material, which cap goes united by its lower circular base or configuration, a horizontal crown with determinative indentations of propeller-like fins, hanging from the outer edge of that crown, a tubular body or slightly trunk-conical that being open at its bottom, presents on its surface perforations of any profile covered by thin translucent sheets of different colors, all apr in order that when the bulb placed in the center of the said tubular body is lit, an upward current of air arises which, when passing through the upper crown or helix, forces the reaction produced therein to turn the said body, projecting the moving images , either on a translucent front screen or on a balloon that surrounds the aforementioned mobile assembly. (Machine-translation by Google Translate, not legally binding)