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Automatic Door
An automatic door, also known as an auto door, is a door that opens automatically, usually on sensing the approach of a person.
In the 1st century AD, mathematician Heron of Alexandria in Roman Egypt invented the first known automatic door. He described two different automatic door applications. The first application used heat from a fire lit by the city's temple priest. After a few hours atmospheric pressure built up in a brass vessel causing it to pump water into adjacent containers. These containers acted as weights that – through a series of ropes and pulleys – would open the temple's doors at about the time people were to arrive for prayer. Heron used a similar application to open the gates to the city.[1]
In 1931, engineers Horace H. Raymond and Sheldon S. Roby of the tool and hardware manufacturer Stanley Works designed the first model of an optical device triggering the opening of an automatic door. The invention was patented and installed in Wilcox's Pier Restaurant in West Haven, Connecticut for the benefit of waiters carrying plates of food and drink. The entire system plus installation was sold for $100.[2][3]
In 1954, Dee Horton and Lew Hewitt invented the first sliding automatic door. The automatic door used a mat actuator. In 1960, they co-founded Horton Automatics Inc and placed the first commercial automatic sliding door on the market.[4]
The Metropolitan Borough of Dudley is a metropolitan borough of West Midlands in England. It was created in 1974 following the Local Government Act 1972, through a merger of the existing Dudley County Borough with the municipal boroughs of Stourbridge and Halesowen. The borough borders Sandwell to the east, the city of Birmingham to the south east, Bromsgrove to the south in Worcestershire, South Staffordshire District to the west, and the city of Wolverhampton to the north.
Being a metropolitan borough Dudley is effectively a unitary authority, with the exceptions of Transport for West Midlands, (publicly branded as West Midlands Network), fire and police services, and the local government pension fund (West Midlands Pension Fund), which are jointly run by the seven metropolitan boroughs of the West Midlands county.
For Eurostat purposes, Dudley is a NUTS 3 region (code UKG36), and is one of seven boroughs or unitary districts that comprise the "West Midlands" NUTS 2 region.[2]
