A new security closure system for deposits and liquids, air pipes and other general uses (Machine-translation by Google Translate, not legally binding)

摘要

IMPROVEMENTS INTRODUCED IN THE PURPOSE OF THE MAIN PATENT NUMBER 184,725, BY NEW SYSTEM OF SECURITY CLOSURE FOR DEPOSITS AND LIQUIDS, AIR PIPES AND OTHER GENERAL USES, characterized in that the number of toothed levers will be increased in number of three , thus giving a greater number of fastening points to the assembly on the inner walls of the tube, distributing for this purpose at equal distances from each other. (Machine-translation by Google Translate, not legally binding)