Engineering:Paternoster lift

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Short description: Type of elevator
Paternoster.png
Paternoster animated.gif
A paternoster in Prague
Paternoster elevator in The Hague, when it was still in operation

A paternoster (/ˌptərˈnɒstər/, /ˌpɑː-/, or /ˌpæ-/) or paternoster lift is a passenger elevator which consists of a chain of open compartments (each usually designed for two people) that move slowly in a loop up and down inside a building without stopping. Passengers can step on or off at any floor they like. The same technique is also used for filing cabinets to store large amounts of (paper) documents or for small spare parts.[1] The much smaller belt manlift, which consists of an endless belt with steps and rungs but no compartments, is also sometimes called a paternoster.

The name paternoster ("Our Father", the first two words of the Lord's Prayer in Latin) was originally applied to the device because the elevator is in the form of a loop and is thus similar to rosary beads used as an aid in reciting prayers.[2]

The construction of new paternosters was stopped in the mid-1970s out of concern for safety, but public sentiment has kept many of the remaining examples open.[3] By far, most remaining paternosters are in Europe, with 230 examples in Germany and 68 in the Czech Republic. Only three have been identified outside Europe; one each in Malaysia, Sri Lanka, and Peru.[4][5]

History

British architect Peter Ellis obtained a patent in July 1866 for "an improved lift, hoist, or mechanical elevator" with two shafts[6] and subsequently installed the first elevators that could be described as paternoster lifts in Oriel Chambers in Liverpool in 1868.[7] This patent lapsed in July 1873. Another was used in 1876 to transport parcels at the General Post Office in London. In 1878, British engineer Frederick Hart obtained a patent on the paternoster.[8][9] In 1884, the engineering firm of J & E Hall of Dartford, Kent, installed its first "Cyclic Elevator", using Hart's patent, in a London office block, and the firm is generally considered the company first involved in regular construction of the lifts.[10]

The newly built Dovenhof in Hamburg was inaugurated in 1886. The prototype of the Hamburg office buildings equipped with the latest technology also had a paternoster. This first system outside of Great Britain already had the technology that would later become common, but was still driven by steam power like the British systems.[citation needed]

The highest paternoster lift in the world was located in Stuttgart in the 16-floor Tagblatt tower, which was completed in 1927. This was replaced with conventional elevators in 1959.[citation needed]

Paternosters were popular throughout the first half of the 20th century because they could carry more passengers than ordinary elevators. They were more common in continental Europe, especially in public buildings, than in the United Kingdom. They are relatively slow elevators, typically travelling at about 20–45 centimetres per second (0.7–1.5 ft/s)[11] to facilitate passengers embarking and disembarking.[12]

Safety

Paternoster elevators are intended only for transporting people. Accidents have occurred when they have been misused for transporting large items such as ladders or library trolleys.[13] Their overall rate of accidents is estimated as 30 times higher than conventional elevators. A representative of the Union of Technical Inspection Associations stated that Germany saw an average of one death per year due to paternosters prior to 2002, at which point many of them were made inaccessible to the general public.[13]

Because the accident risk is much greater than for conventional elevators, the construction of new paternosters is no longer allowed in many countries. In 2012, an 81-year-old man was killed when he fell into the shaft of a paternoster in the Dutch city of The Hague.[14] Elderly people, disabled people and children are most vulnerable.[15]

In September 1975, the paternoster in Newcastle University's Claremont Tower was temporarily taken out of service after a passenger was killed when a car left its guide rail at the top of its journey and forced the two cars ascending behind it into the winding room above.[16] In October 1988 a second, non-fatal accident occurred in the same lift.[17] A conventional lift replaced it in 1989–1990.

In West Germany, new paternoster installations were banned in 1974,[18] and in 1994 there was an attempt to shut down all existing installations.[8] However, there was a wave of popular resistance to the ban, and to a similar attempt in 2015, and as a result many are still in operation.[8][19] (As of 2015), Germany had 231 paternosters.[8]

In April 2006, Hitachi announced plans for a modern paternoster-style elevator with computer-controlled cars and standard elevator doors to alleviate safety concerns.[20][21] A prototype was revealed (As of February 2013).[22] In 2009, Solon received special permission to build a brand new paternoster in its Berlin headquarters.[23]

Surviving examples

Austria

  • In Vienna, the Vienna City Hall, the Ringturm (headquarters of the Vienna Insurance Group), an office building at Trattnerhof 2 near Stephansplatz and Haus der Industrie on Schwartzenbergplatz have the last four running and frequently used paternosters in the city. The university also had one or more.
  • In Klagenfurt, the Headquarters of the energy company Kelag still have one paternoster active for daily use.

Belgium

  • A paternoster lift dating from 1958 survives in Avenue Fonsny 47, Brussels, a currently disused office building forming part of Midi/Zuid railway station.[24]
  • At the Huis van de Vlaamse Volksvertegenwoordigers (House of Flemish Representatives), previously the Postcheque Building, at Leuvenseweg/Rue de Louvain 86, the paternoster is operational but not used.

Czech Republic

  • In Prague, New City Hall – an early 20th century paternoster renovated in 2017.[25] The lift was temporarily closed in April 2023 due to misuse by tourists.[26]
  • In Prague, Czech Technical University – Faculty of Electrotechnical Engineering at Technická 2, Dejvice
  • In Prague, Charles University – Faculty of Law
  • In Prague, Ministry of Transport (Czech Republic) head office
  • In Prague, Ministry of Agriculture (Czech Republic)
  • In Prague, Lucerna Palace (near the southeast entrance)
  • In Prague, Czech Radio building (oldest paternoster lift in the Czech Republic, not publicly accessible)
  • In Prague, YMCA building
  • In Plzeň, municipal office – Škroupova 1900/5
  • In Brno, Brno Technical University – Faculty of Mechanical Engineering at Technická 2896/2
  • In Brno, municipal office – Malinovského Square 624/3
  • In Most, Business centrum, tř. Budovatelů 2957
  • In the offices of Czech Post at Brno railway station, (returned to use in 2013, after being out of service for six years)[27]
  • In Jablonec nad Nisou, city hall built in 1933
  • In Ostrava, New City Hall built in 1930
  • In Liberec, Liberec Regional Office building build in 1971, highest paternoster in the country (56.8 m high and has 35 wooden cabins)
  • In Zlín, Baťa's Skyscraper or Building No. 21 built in 1938

Denmark

  • In the Christiansborg Palace where the Danish parliament resides
  • At Vognmagergade 8. Today the building is used by KVUC – Københavns VUC (Copenhagen's adult-education center)
  • In the corporate office building Axelborg, located in central Copenhagen[28]
  • In Frederiksberg Town Hall
  • In the 11-story main administrative building at Danfoss headquarters on the island of Als
  • In the hospital in Vejle
  • Sydvestjysk Hospital in Esbjerg

Finland

Paternoster lift at the Parliament House of Finland

The following locations have paternosters:

  • In Turku, Town hall in Yliopistonkatu 27
  • In Helsinki, in the office building at Hämeentie 19
  • In Helsinki, at Eduskunta, the parliament of Finland at Mannerheimintie 30, accessible to staff only
  • In Helsinki, in Stockmann, Helsinki centre at Aleksanterinkatu 52, accessible to staff only

Germany

  • In Kiel, the State Parliament building for the state of Schleswig-Holstein has had a working paternoster since 1950.[29]
  • In Kiel, the city hall has had a paternoster in use for over 100 years.[30]
  • In Berlin, the offices of the alt-left newspaper Neues Deutschland contain a working paternoster ((As of 2020)), while those of the conservative tabloid Bild contain a 19-storey paternoster[8] that is still in use but not open to the public.[31] The Rathaus Schöneberg, including scenes with its paternoster elevator, were used to film the TV series Babylon Berlin.[32]
  • In Berlin, the building at Kleiststr. 23–26 that houses Argentina's embassy contains an 8-story paternoster.[33]
  • In the Axel-Springer-Hochhaus (de) in Berlin paternosters are in use.
  • In the German Academy of Sciences in Berlin another paternoster is in use.
  • In the Siemens building in Berlin at Nonnendammallee 101 a paternoster is in use.
  • Berlin's Flughafen Tempelhof through at least 1967 (when it shared an identity as Tempelhof Air Base) had at least 1 fully-functional paternoster in the tower on the left end (as seen from the Luftbrückeplatz) of the quarter-circular pre-WW2 building.
  • Bremen has a paternoster in the Bremen Cotton Exchange, at Wachtstraße 17-24, just off the market square.
  • In Hamburg, the building at 25 Deichstraße, Speicherstadt, has an operating paternoster, the Bezirksamt at Grindelberg 62–66 in Eimsbüttel and Hapag Lloyd buildings in Balindamm street also have a working Paternoster. As well as the building at Stadthausebrücke 8.
  • In Cologne, the building at Hansaring 97 has a working and in-use paternoster.
  • In Frankfurt, the former IG Farben Building has running and frequently used paternosters as seen in the movies "Berlin Express" (1948) and "Night People" (1954).
  • In Frankfurt the hotel Fleming's has an operational paternoster.
  • In Jena, a paternoster is in use at the headquarters of Jenapharm.
  • In Kassel, a paternoster is still in use at the headquarters of Wintershall Dea
  • In Lippstadt, a paternoster is still in use at the headquarter of Hella/Forvia.
  • In Wetzlar, a paternoster is in use at the headquarters of Leica Microsystems
  • In Stuttgart, a paternoster is still in use at city hall (Stuttgart Rathaus).
  • In Leipzig, a paternoster is still in use at city hall (Leipzig Neues Rathaus)

Hungary

  • In Jahn Ferenc hospital in Budapest.
  • In Miskolc, the University of Miskolc, has a working and in-use paternoster.
  • In the central office of National Tax and Duty Administration Budapest.
  • In the MVM building in Budapest.
  • In the headquarters of BKV Budapesti Közlekedési Zrt. in Budapest. (operating in 2020)
  • In the Ministry of Education in Budapest (operating and in daily use in March 2022).
  • In Kiskun County Hospital, Kecskemét

Italy

  • In Fiat's Head Office Building, Mirafiori, Turin (Torino) [as of 1985].

Netherlands

In the Netherlands, seven paternoster lifts could be found in 2012, some of which were still operational:

  • In the former Ziggo building at Spaarneplein 2, The Hague: no longer in use. (Stork Hijsch 1922, conversion 1976 Starlift, damage repair 1999 Schindler.) On 13 April 2012, a fatal accident occurred when an 81-year-old man was trapped between the lift and the wall.[34]
  • At the Dudokhuis, Tata Steel Europe in IJmuiden: shut down in 1999. (Eggers Kehrhan, 1957):
  • In the HaKa building (the old head office of the Coöperatieve Groothandelsvereniging 'de Handelskamer' ) on the Vierhavenstraat in Rotterdam. This 1936 Hensen-Schindler lift has been operational again since the end of 2011, although the building is empty. For safety reasons, the lift can only be visited with the building manager. The lift can be put into operation for interested parties on request.
  • In the former tax office on Puntegaalstraat in Rotterdam; it is put into operation during Heritage Days, but may not be used. To enforce this, gates have been built across the entrances. (Backer and Rueb Breda, 1948, conversion December 1975 by De Reus BV.)
  • In the former post office on the Coolsingel 42 in Rotterdam: disused.
  • Two examples in the Scheepvaarthuis (now Grand Hotel Amrâth Amsterdam) in Amsterdam: working, can be used on request. (Roux Combaluzier, 1928.)
  • In the old school building on the Mauritskade in Amsterdam: whether the elevator is still working is unknown.

Norway

  • In Oslo, Landbrukets hus, on Schweigaards Gate. The building was built in 1965 as the headquarters for Norges Bondelag, who vacated it in 2016. [35]

Poland

  • Building of Silesian Parliament in Katowice.
  • In Wrocław, Poland, Santander Bank building, Main Square. Available for employees only.
  • In Opole, Poland, Urząd Wojewódzki building, Ostrówek.

Russia

Serbia

  • In Belgrade in the headquarters building of Serbian Railways there is one operating paternoster lift and another one which is not in service.[36]

Slovakia

  • In Bratislava there are at least 5 operating paternosters: Ministry of Transport and Construction, Ministry of Interior, Ministry of Finance, Ministry of Agriculture and Rural Development and the headquarters of Railways of the Slovak Republic.[37]
  • In Košice, the Technical University of Košice operates a paternoster in the main building called L9 since 1972. There's another paternoster in an administrative building of U.S.Steel Košice, steel manufacturing company in Košice.

Sri Lanka

  • Ceylon Electricity Board Headquarters building in Colombo

Sweden

  • In Sweden there is at least one functional Paternoster lift at HSB-huset, Kungsholmen, Stockholm
  • Mäster Samuelsgatan 56, in central Stockholm, houses a multi-floor Paternoster lift.

United Kingdom

Current
  • The Arts Tower at the University of Sheffield[38] has a paternoster, which is said to be the largest in Europe. It has 38 two-person cars and serves 22 storeys. A journey between two floors takes 13 seconds.[39]
  • The Albert Sloman Library at the University of Essex on the Colchester campus has a working paternoster which began operating in 1967. The lift was temporarily out of service when refurbishment began in December 2019. The lift has been back in service since 01 June 2021.[40]
  • Northwick Park Hospital in Harrow, North West London (part of the London North West University Healthcare NHS Trust) has the last working paternoster in London.[41] It had been out of commission for many years until July 2020, when it was reopened for staff use.[42]
Former
  • Aston University in Birmingham were operating paternoster lifts in the main building. These are no longer in use, but one is remaining and is visible on the 4th floor of the south wing. The lift cars are covered with a perspex wall, and some visual displays explain the story and operation of the lift. There is a nice photo album on Flickr.
  • On 8 December 2017 it was announced that the paternoster in the Attenborough tower at the University of Leicester which was constructed in 1968–70 would be taken out of service as maintenance had become too expensive. This was undertaken shortly afterwards.[43][44][45][46]
  • At the University of Birmingham, both the main library and the Muirhead Tower had paternosters. The library was demolished in 2017, and replaced with a new library. The paternoster in the Muirhead Tower was closed for many years before a major refurbishment added two new lifts.
  • Birmingham Polytechnic (now Birmingham City University) had a paternoster in the 1970s in the Baker building on its City North Campus at Perry Barr. The building closed in 2018.
  • Birmingham College of Food, Tourism & Creative Studies, Summer Row, Birmingham. (now University College Birmingham)
  • Birmingham Dental School. The building was demolished during 2020–21
  • London School of Economics. The Clare Market Building had a paternoster until 1991[47]
  • There was a paternoster in the Co-op's six-storey Fairfax House department store, in Bristol's Broadmead shopping centre. The store opened in March 1962 and was demolished in 1988.
  • Leeds University in the Roger Stevens building.
  • Newcastle University's Claremont Tower paternoster had a fatal accident in September 1975 after a car left its guide rail at the top of its journey and forced the two cars ascending behind it into the winding room above.[16] Another accident in 1988 led to its subsequent closure and removal.[17]
  • University of Glasgow. The Pontecorvo Building which housed The Institute of Genetics had a paternoster lift.[48]
  • Oxford University Department of Engineering Science. The Thom Building had a paternoster lift through into the 1980s, now replaced by a pair of conventional lifts.
  • University of Salford Chemistry Tower had a paternoster lift. The building has been demolished.[49]
  • Risley, Cheshire – Former United Kingdom Atomic Energy Authority (UKAEA) site, now Birchwood Park Business Park. The original management block 'A Block', and the later engineering building 'E Block' had paternoster lifts. Those in the former E Block (Chadwick House) survived into the 21st century (sealed off), and still exist in place. The adjacent ‘Y Block’ also had two sets, these are also sealed off.
  • UKAEA Winfrith Heath Dorset 4 floor Administration Building
  • Viscount House, a British Airways office building at Hatton Cross.[50] Now demolished.
  • Unipart House, Oxford had two of them. They were at each end of the building but were taken out due to the cost of maintenance. Bob Geldof and The Boomtown Rats filmed their video of Love or Something in them.

Gallery

See also

References

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  2. "Paternoster, n.". Oxford University Press. dictionary.oed.com. 8 March 2010. http://dictionary.oed.com/cgi/entry/50172804. 
  3. Bertrand Benoit (25 June 2015). "Is It Time for Germany's Doorless Elevators to Move On?". WSJ. https://www.wsj.com/articles/SB10907564710791284872504581068283842808972. 
  4. Michele Lent Hirsch. "Ride This Bizarre, Old-School Elevator Before They All Shut Down". Smithsonian. http://www.smithsonianmag.com/travel/ride-bizarre-old-school-elevator-they-all-shut-down-180955461/?no-ist. 
  5. "PatList". flemming-hamburg.de. http://www.flemming-hamburg.de/patlist.htm#deutschland. 
  6. "A New Description of Lift". The Architect 2: 278. https://hdl.handle.net/2027/mdp.39015014823804. Retrieved January 3, 2024. ""A lift has been invented and patented by Mr. Peter Ellis, architect, of Liverpool, which we may class as a person lift, but which differs from any other in the fact of its having two shafts instead of one, with several cages or chairs in each shaft, and in moving continuously up one shaft and down the other... the passengers entering or leaving without stoppage, although having the power to stop it in case of necessity... we give a description of the first completed specimen, which has been in use for some months in Oriel Chambers"". 
  7. "In the Footsteps of Peter Ellis". 15 October 2016. http://www.liverpoolhistorysociety.org.uk/in-the-footsteps-of-peter-ellis/. 
  8. 8.0 8.1 8.2 8.3 8.4 Benoit, Bertrand (25 June 2015). "Is It Time for Germany's Doorless Elevators to Move On?". The Wall Street Journal. https://www.wsj.com/articles/SB10907564710791284872504581068283842808972. 
  9. Gray, Lee (1 April 2012). "Hart's Cyclic Elevator, Part I". Elevator World LX (4): 100–105. https://elevatorworld.com/article/harts-cyclic-elevator-part-i/. 
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  12. Strakosch, George R. (1998). The vertical transportation handbook. Wiley. pp. 99–100. ISBN 978-0-471-16291-9. https://books.google.com/books?id=GLZdcTVI4kIC&q=elevator+paternoster&pg=PA99. Retrieved 22 July 2010. 
  13. 13.0 13.1 "Paternoster: Aufzug mit Charme und Risiko". Focus. Deutsche Presse-Agentur. 10 October 2006. https://www.focus.de/wissen/mensch/paternoster_aid_117131.html. 
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  16. 16.0 16.1 Knight, V (1 June 1980). "The Paternoster Lift". Proceedings of the Institution of Mechanical Engineers 194 (1): 131–138. doi:10.1243/PIME_PROC_1980_194_016_02. 
  17. 17.0 17.1 "Trapped: First Year Student Rescued by Firemen". 20 October 1988. http://courierarchive.ncl.ac.uk/sites/default/files/1988-10-20.pdf. 
  18. Zehrfeld, Claudia (9 June 2022). "Paternoster: Wo gibt es die Aufzüge noch?". https://www.t-online.de/leben/reisen/deutschland/id_75835970/paternoster-wo-gibt-es-die-nostalgischen-aufzuege-noch-.html. 
  19. Kate Connolly (14 August 2015). "Lovin' their elevator: why Germans are loopy about their revolving lifts". The Guardian. https://www.theguardian.com/world/2015/aug/14/elevator-germans-loopy-revolving-lifts-paternosters. 
  20. Staedter, Tracy (June 2006). "Lifts in Loops". Fast Company (106): p. 35. https://www.fastcompany.com/56864/lifts-loops. 
  21. "Development of basic drive technology improve innovative transportation capacity of the elevator "circulating multi-car elevator"" (in ja). News Release. Hitachi. 1 March 2006. http://www.hitachi.co.jp/New/cnews/month/2006/03/0301.html. Google translation
  22. "Circulating Multi-Car Elevator System 'Exponential increase in carrying capacity'". Hitachi. 25 June 2013. https://www.youtube.com/watch?v=ESo-0KXeCFo. 
  23. Fairley, Peter. "Life's a 'Paternoster' (and then you fly)". IEEE Spectrum. https://spectrum.ieee.org/energywise/green-tech/buildings/lifes-a-paternoster-and-then-you-fly. 
  24. Saint-Gilles Gare du Midi et bâtiments annexes www.irismonument.be, accessed 1 October 2021
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  26. "Tourist interest in historic Prague paternoster leads to temporary shutdown". 13 April 2023. https://www.expats.cz/czech-news/article/tourist-interest-in-historic-prague-paternoster-leads-to-temporary-shutdown#:~:text=Prague%20City%20Hall%20has%20stopped,do%20not%20respect%20the%20instructions. 
  27. izi (4 August 2013). "Na poště se znovu rozběhl starý páternoster" (in cs). Czech Television. http://www.ceskatelevize.cz/zpravodajstvi-brno/zpravy/236643-na-poste-se-znovu-rozbehl-stary-paternoster/. 
  28. "Ældre mand er død i Axelborgs elevator" (in da). https://landbrugsavisen.dk/%C3%A6ldre-mand-er-d%C3%B8d-i-axelborgs-elevator. 
  29. "Landtag SH – State Parliament of Schleswig-Holstein". https://www.landtag.ltsh.de/parlament/english/. 
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  31. Dullroy, Joel (23 January 2017). "Going Up: Berlin's surviving Paternoster elevators". Blogfabrik. https://blogfabrik.de/de/2017/01/23/paternoster-elevators/. 
  32. "Im Aschinger". www.rbb24.de. https://www.rbb24.de/kultur/thema/2018/babylon-berlin/beitraege/drehortkarte-babylon-berlin-aschingers-bierquellen---rathaus-schoeneberg.html. 
  33. "Paternoster in Berlin: Wo fahren sie noch?". 23 January 2021. https://www.deutschlandmalanders.com/die-paternoster-aufzuege-in-berlin/. 
  34. nu.nl; Dodelijk ongeluk liftschacht was op reünie, 14 April 2012 (ANP-bericht)
  35. "Dette er nye Landbrukets hus". 28 October 2016. https://www.bondelaget.no/nyhetsarkiv/dette-er-nye-landbrukets-hus. 
  36. "Zašto se korisnici pomole pre ulaska u jedan beogradski lift? | Upoznaj Beograd". https://www.011info.com/upoznaj-beograd/zasto-se-korisnici-pomole-pre-ulaska-u-jedan-beogradski-lift. 
  37. "Paternostery – päť ukrytých pokladov Bratislavy". 14 November 2011. https://reality.trend.sk/komercne-nehnutelnosti/paternostery-pat-ukrytych-pokladov-bratislavy. 
  38. "The largest Paternoster elevator in the world – Doobybrain.com". Doobybrain.com. http://www.doobybrain.com/2012/10/08/the-largest-paternoster-elevator-in-the-world/. 
  39. University of Sheffield (21 December 2017). "University of Sheffield's paternoster lift still going strong". sheffield.ac.uk. https://www.sheffield.ac.uk/news/nr/sheffield-arts-tower-paternoster-1.753518. 
  40. "Paternoster Refurbishment". The University of Essex. 20 February 2023. https://library.essex.ac.uk/paternoster. 
  41. "Top 10 Lifts in London". 10 November 2011. https://londonist.com/2011/11/londons-top-10-lifts. 
  42. Anonymous (23 July 2020). "Paternoster lifts hospital's spirits". London North West University Healthcare NHS Trust. https://www.lnwh.nhs.uk/news/paternoster-lifts-hospitals-spirits-2154. 
  43. Hayward, Jo; Cambell, Gordon (23 June 2015). "Paternoster University of Leicester". http://www.bbc.co.uk/programmes/p02vdg1f. 
  44. Chilver, Katrina (9 December 2017). "Why students say university 'death lift' must be saved". leicestermercury. http://www.leicestermercury.co.uk/news/leicester-news/students-say-university-leicester-paternoster-901781. 
  45. Chilver, Katrina (8 December 2017). "Historic Attenborough Tower Leicester University lift to be removed". http://www.leicestermercury.co.uk/news/leicester-news/historic-attenborough-tower-leicester-university-898438. 
  46. "University closes rare lift 'with a heavy heart'". BBC News. 13 December 2017. https://www.bbc.co.uk/news/uk-england-leicestershire-42339097. 
  47. Sue Donnelly (July 2015). "LSE Blog: Going high rise at Clare Market". blogs.lse.ac.uk. https://blogs.lse.ac.uk/lsehistory/2015/07/01/clare-market/. 
  48. "Arrivederci Pontecorvo Building - University of Glasgow". www.gla.ac.uk. 2016. https://www.gla.ac.uk/myglasgow/news/newsarchive/2021/15february2021/headline_772849_en.html. 
  49. Gluchowski, Ashley; Dulson, Deborah; Merien, Fabrice; Plank, Lindsay; Harris, Nigel (2016). "Paternoster lift in the Chemistry Tower (picture, 1986)". Usir.salford.ac.uk 98: 224–229. doi:10.1016/j.exger.2017.08.034. PMID 28887154. http://usir.salford.ac.uk/id/eprint/10599/. Retrieved 1 October 2021. 
  50. "British Airways - Viscount House, Heathrow Airport". https://paternoster-count.de/paternoster.php?id=383. 

External links