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.
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.
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.
The Metropolitan Borough of Solihull is a metropolitan borough of the West Midlands, in west-central England. It is named after its largest town, Solihull, from which Solihull Metropolitan Borough Council is based. For Eurostat purposes it is a NUTS 3 region (code UKG32) and is one of seven boroughs or unitary districts that comprise the "West Midlands" NUTS 2 region. Much of the large residential population in the north of the borough centres on the communities of Castle Bromwich, Chelmsley Wood, Fordbridge, Kingshurst, Marston Green and Smith's Wood. In the south are the town of Solihull, its sub-town of Shirley and the large villages of Knowle, Dorridge, Meriden and Balsall Common.
Since 2011, Solihull has formed part of the Greater Birmingham & Solihull Local Enterprise Partnership along with neighbouring authorities Birmingham, Bromsgrove, Cannock Chase, East Staffordshire, Lichfield, Redditch, Tamworth and Wyre Forest.