Cyclopedia of architecture, carpentry, and building : a general reference work ... (1907)
American School of Correspondence · Chicago : American Technical Society · leaf 444
e, this method of operation was not asperfect as could be desired; hence, there was devised what is calledthe electric control. This consists of a small switch located in tbecab. From it wires are run in tbe form of tbe flexible cable to apoint midway of the run of elevator, where the end of the… … 345 32 FXEVATORS oids oil the controller. These solenoids operate the switches whichmake and break the circuit in either direction. The throwing ofthis switch in the cab to the> upright or central j)osition, breaks the circuit always, and movingit either to the right handor left will close the…
Architecture · Building · Carpentry
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