The pulley over which this rope ran was fastened underneath the lantern in a little iron box, the key to which was kept by the lamp-lighter, and the rope itself was protected by a metal case.

• 绕绳子的转盘关在灯下面的一只小铁盒里，钥匙由点灯工人保管，绳子在一定的高度内有一根金属管子保护着。