a small box elevator designed for carriage of lightweight freight is called a Dumb - Waiter, often used for moving of small items such as
Dumbwaiter dishes in a kitchen or books in a multistory rack assembly. Passengers are never permitted in dumbwaiters. Dumb-Waiters are generally driven by a small electric motor with a counterweight and their capacity is limited to about 250 kg. They may also be drum operated using a roped pulley.
Ms. Monika Arora
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