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Cabs and Doors
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Control Focus On Cabs And Doors And Safety (With A Twist Of The Wrist)

By Dr. Lee Gray | September 1, 2019

A rare case of complexity finding success is described in this historical look at the Randall elevator door controller. Elevator doors have been a consistent subject of conversation, study and innovation since the late 19th century. These efforts have produced a variety of solutions to the problem of safe door operation over the past 150…

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The Bostwick Elevator Gate

By Dr. Lee Gray | April 1, 2018

The Unlikely Story of How a Patent Acquisition became Synonymous with sliding, collapsible metal elevator gates One of the most iconic components of many late 19th- and early 20th-century elevators was the folding or collapsible metal gate. The visual characteristics of these gates, with their open network of crisscross steel or bronze bars, and the…

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Elevator World | October 2021 Cover

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