Vacuum-generating apparatus by applying torricelli's vacuum

A vacuum-generating apparatus by applying Torricelli's vacuum, said vacuum-generating apparatus comprising:

• a plurality of operating tubes, each of said operating tubes having an open end, a closed end, an intermediate portion defined between said ends, and an inside, each of said operating tubes being folded upwardly at said ends at a substantially right angle to said intermediate portion, said inside of each of said operating tubes being filled with a liquid, said intermediate portion of each of said operating tubes being pivotally supported by a horizontal shaft such that each of said operating tubes is pivotal about said horizontal shaft within a range extending from a position in which said ends are in a slightly upwardly inclined position to a position in which said ends are in a nearly overhead position;
• a rising-up and falling-down crankshaft having a plurality of crank parts, each of said crank parts extending radially from said crankshaft and being offset at a same angle of difference from each other;
• a plurality of connecting rods, each of said connecting rods connecting said intermediate portion of each of said operating tubes to each of said crank parts of said rising-up and falling-down crankshaft such that, accompanying a rotation of said rising-up and falling-down crankshaft, each of said operating tubes begins rising-up and falling-down movements in a different phase than each of the other said operating tubes, and such that each of said operating tubes and said liquid filling said inside thereof are balanced in gravity at said horizontal shaft;
• driving means for rotating said rising-up and falling-down crankshaft;
• a plurality of flexible tubes, each of said flexible tubes communicating with each of said closed ends of said operating tubes with a pressure reducing tank;
• and
• a plurality of electromagnetic valves being respectively provided at an end of each of said flexible tubes which is near to each of said operating tubes, each of said electromagnetic valves being able to switch to a position in which each of said operating tubes communicates with atmosphere;
• said closed ends of each of said operating tubes having a length such that Torricelli's vacuum is formed in said closed end by said liquid when said closed end comes to said overhead position.