Electronic device for chemical formulation and other applications of the teaching. (Machine-translation by Google Translate, not legally binding)

摘要

Electronic device for chemical formulation and other applications of teaching, characterized in that it is constituted by a series of double contacts arranged at the crossing points of rows designated with symbols of chemical elements and columns headed with the terminations corresponding to different valences of those, and another one of double contacts, designated by the chemical radicals that with these elements form diverse compounds; electrically bridging the central terminals of the contacts of the first group and those of the isolated column, which correspond to components of correct chemical compounds; as well as electrically connected the peripheries of all the contacts of elements that do not form real compounds on the one hand, and on the other those corresponding to valences whose use constitutes a fundamental error; whose internal circuits of the device, are connected, by means of double terminals, to three external ones that comprise a source of electrical energy, a relay or equivalent transistorized element and three indicator pilot lamps, respectively, of which the compound has been formed correctly, the components they have been wrongly chosen or there has been an error in the choice of the valence of the element. (Machine-translation by Google Translate, not legally binding)