Mitsubishi Denki Kabushiki Kaisha

Itsurou Tangiku

Shinji Yamasaki

Yoshiki Sugiyama

Yasumasa Iida

An elevator hoist apparatus of the type disposed in the bottom of a hoistway has an improved structure for securing the apparatus to the wall of the hoistway. The apparatus also comprises an improved hoist drum having multiple parallel rope grooves formed in the drum so as to spiral around the drum in the same direction from one end of the other to the other. The load acting on the main ropes wrapped around these grooves is thereby equalized, increasing the safety of the apparatus. Furthermore, the ends of the main ropes are secured to the drum so that the main ropes are reliably secured even when there is no tensile force acting on the main ropes.

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Ichinomiya, Japan

Itsurou Tangiku