How the Lift / Elevator works. Program distributed by Team Program Pacific. From Secret Life of Office Machines series.

The Secret Life of Office Machines - 6 Program/2 DVD Series

Lift / Elevator - 25 mins
The Hunkin program begins with an introduction to the modern office building lift or elevator. Basic idea of a pulley and a rope is demonstrated. Archive film of past applications. Otis invention shown in animation. He invents teeth in the cage frame in case the rope breaks. (Picture). Lifts were first used for freight. Then passengers. Hunkin explains how this allowed the building of sky scrapers. Demonstration of capstan and counter weight. Rope testing under huge pressures shown. Other safety measures. Express lifts shown. Lift doors - sensors - how they work. Infra red sensor. Computer used to optimise scheduling and allocation of lifts. Hydraulic operated lifts demonstrated. Experiment with hydraulics instead of rope. How falling down lift shaft prevented!

Program 1: Fax Machine
Program 2: Photocopier
Program 3: Lift / Elevator
Program 4: Electric Light
Program 5: Computer/Word Processor
Program 6: Office

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The Secret Life of Office Machines covers office machines and has been on TV around the world - USA, Australia, UK, Britain. It is a 6 program series, and is very similar in style to the Secret Life of Machines series (12 programs), which primarily deals with household machines. Using analogies, illustrations, animation, working models and extraordinary experiments, Tim Hunkin explains machines used in the modern office.