2. Demag Hoists

A hoist based on wikipedia, is a device that used for lifting or transfering load around which rope or chain wraps.  It may be manually operated, electrically driven and may use chain or wire rope as its lifting medium.  The load is attached to the hoist by means of a lifting hook.  The basic hoist has two important characteristics which are lifting medium and power type.  The lifting medium is either wire rope or load chain, raised by a pulley with special profile to engage the chain. The power can be provided by hydraulics, electrical and air driven motors.  Both the wire rope hoist and chain hoist have been in common use since the 1800s.  Mass production of electric hoist was started in the early 1900s and was first adapted by Germany.  A Hoist can be built as one integral-package unit, designed for cost-effective purchasing and moderate use, perfected with durability and performance.   More commonly used hoist in today’s worldwide market is an electrically powered hoist.  These are either the chain type or the wire rope or cable type.  Common small portable hoists are of two main types, the chain hoist or chain block and the wire rope or cable type.  Chain hoists may have a lever to activate the hoist or have a loop of operating chain that one pulls through the buttom block which then activates the block to take up the main lifting chain.   Now days electrical chain hoist or known as takel in indonesia, also can be used as passenger hoist, elevator hoist or for dumb waiter hoist