A heavy forgehammer having a pivoted lever by which it is tilted up and then allowed to drop.
锻造用的重锤，通过带枢轴的杠杆将它倾斜抬起，然后落下。
2
Drop hammer: a machine consisting of an anvil or base aligned with a hammer that is raised and then dropped on molten metal used to forge or stamp the metal resting on the anvil.
落锤：由钻或底座及与之对齐的锤组成的机器，锤被举起后落在融化金属上用于锻造或冲压放在砧板上的金属。
3
Hammer was sleeping off a drunk when they reached the forge, just as Kem had prophesied, but Nail had no objection to the two dwarfs clambering through the wagons.