The Temple Institute: In-Depth Temple Study: The Area between the Ulam and the Mizbeach: The Parts of the Laver: The Muchni
 
The Area between the Ulam and the Mizbeach: The Parts of the Laver: The Muchni

The "Muchni" was constructed to solve the halachic problem of water invalidated by "staying overnight" in the laver ("posul b'lina"). Anything that was left all night in a sanctified vessel, was deemed unfit for use. In order to solve this problem, a priest named Ben Katin donated the Muchni, a kind of pulley. With this pulley the laver was lowered into a nearby water cistern at dusk and the water inside was drained. At dawn the laver was refilled with water and with the help of the pulley, placed in its proper spot. The Mishnah tells us that sound of the Muchni could be heard as far away as Jericho. 
Contents:   Part I,    Part II,    Part III,    Part IV,    Part V,    Part VI,    Part VII