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A trapdoor is a sliding or hinged door that is flush with the surface of a floor, ceiling, or roof.[1] It is traditionally small in size.[2] It was invented to facilitate the hoisting of grain up through mills, however, its list of uses has grown over time.[3] The trapdoor has played a pivotal function in the operation of the gallows, cargo ships, trains,[4]booby traps,[5] and more recently theatre and films.[6][7]
Originally, trapdoors were sack traps in mills, and allowed the sacks to pass up through the mill while naturally falling back to a closed position.[3]
Many buildings with flat roofs have hatches that provide access to the roof. On ships, hatches—usually not flush, and never called trapdoors—provide access to the deck. Cargo ships, including bulk carriers, have large hatches for access to the holds.
Gallowsedit
Most 19th- and early 20th-century gallows featured a trapdoor, usually with two flaps. The condemned was placed at the join. The edge of a trapdoor farthest from the hinge accelerates faster than gravity, so that the condemned does not hit the flaps but falls freely.
Coffinsedit
In 1784, the reusable economy coffin was mandated by Joseph II, Holy Roman Emperor. The coffins had a trapdoor in their base. The coffin would be lowered into the grave and a lever operated that opened the trapdoor, allowing the body to fall to the bottom of the grave.[8][9]
Railwaysedit
Amtrak conductors standing in the doorways of Amfleet cars with their trapdoors in the closed (above) and open (below) positions
The term trapdoor also refers to a plate in the entry vestibule of a passenger railcar that permits access to high-level platforms when lying flat against the floor of the car, and which can be flipped open to expose steps for accessing ground-level platforms. Many American commuter railroads which operate the Comet railcars made by Bombardier have trapdoors to accommodate passengers boarding and alighting on both high-level and ground-level platforms. Amtrak's Viewliner, Amfleet, and Horizon railcar fleets all have trapdoors.
Biologyedit
Trapdoor spiders hide in an underground nest they line with their silk, and then conceal it with a hinged silk lid, the trapdoor.[10]
In theatrical use, "star traps" allowed explosively fast appearances on stage, such as jinn appearing in a puff of smoke.[6]
Fictionedit
Trapdoors are occasionally used as hidden doors in fiction, as entrances to secret passageways, dungeons, or to secret tunnels. They also appear as literal traps into which a hapless pedestrian may fall if they happen to step on one. Other types of doors or other objects are also sometimes used as hidden doors.
A trapdoor figures prominently in a late scene of the 1963 film Charade.
^When the Burgular Goes a-Burgling. Popular Science October 1919, Page 43.
^ ab"Trap Doors On Stage". Theatrecrafts.com. Retrieved 12 November 2018. A set of triangular sprung flaps in the stage floor through which an actor can be propelled from a lift below stage.
^Classen, Albrecht (11 April 2016). Death in the Middle Ages and Early Modern Times: The Material and Spiritual Conditions of the Culture of Death. Walter de Gruyter GmbH & Co KG. p. 512. ISBN978-3-11-043697-6.
^Winkler, Anita. "Wiederverwertung bis zum Tod". Die Welt der Habsburger. Schönbrunn Group of museums. Retrieved 15 July 2021.
^"Trap-door Spider - Definition of trap-door spider by Merriam-Webster". merriam-webster.com.
External linksedit
Media related to Trapdoors at Wikimedia Commons
April 21, 2024
trapdoor, other, uses, disambiguation, this, article, multiple, issues, please, help, improve, discuss, these, issues, talk, page, learn, when, remove, these, template, messages, this, article, provides, insufficient, context, those, unfamiliar, with, subject,. For other uses see Trapdoor disambiguation This article has multiple issues Please help improve it or discuss these issues on the talk page Learn how and when to remove these template messages This article provides insufficient context for those unfamiliar with the subject Please help improve the article by providing more context for the reader March 2018 Learn how and when to remove this template message You can help expand this article with text translated from the corresponding article in Italian March 2018 Click show for important translation instructions Machine translation like DeepL or Google Translate is a useful starting point for translations but translators must revise errors as necessary and confirm that the translation is accurate rather than simply copy pasting machine translated text into the English Wikipedia Consider adding a topic to this template there are already 3 075 articles in the main category and specifying topic will aid in categorization Do not translate text that appears unreliable or low quality If possible verify the text with references provided in the foreign language article You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation A model attribution edit summary is Content in this edit is translated from the existing Italian Wikipedia article at it Botola see its history for attribution You should also add the template Translated it Botola to the talk page For more guidance see Wikipedia Translation The article s lead section may need to be rewritten Please help improve the lead and read the lead layout guide March 2018 Learn how and when to remove this template message Learn how and when to remove this template message A trapdoor is a sliding or hinged door that is flush with the surface of a floor ceiling or roof 1 It is traditionally small in size 2 It was invented to facilitate the hoisting of grain up through mills however its list of uses has grown over time 3 The trapdoor has played a pivotal function in the operation of the gallows cargo ships trains 4 booby traps 5 and more recently theatre and films 6 7 A trapdoor to a bomb shelter from World War II Contents 1 History 2 Gallows 3 Coffins 4 Railways 5 Biology 6 Star traps in theatre 7 Fiction 8 See also 9 References 10 External linksHistory edit nbsp Deck hatch of the Omega the last square rigged sailing cargo ship Originally trapdoors were sack traps in mills and allowed the sacks to pass up through the mill while naturally falling back to a closed position 3 Many buildings with flat roofs have hatches that provide access to the roof On ships hatches usually not flush and never called trapdoors provide access to the deck Cargo ships including bulk carriers have large hatches for access to the holds Gallows editMost 19th and early 20th century gallows featured a trapdoor usually with two flaps The condemned was placed at the join The edge of a trapdoor farthest from the hinge accelerates faster than gravity so that the condemned does not hit the flaps but falls freely Coffins editIn 1784 the reusable economy coffin was mandated by Joseph II Holy Roman Emperor The coffins had a trapdoor in their base The coffin would be lowered into the grave and a lever operated that opened the trapdoor allowing the body to fall to the bottom of the grave 8 9 Railways edit nbsp Amtrak conductors standing in the doorways of Amfleet cars with their trapdoors in the closed above and open below positions nbsp The term trapdoor also refers to a plate in the entry vestibule of a passenger railcar that permits access to high level platforms when lying flat against the floor of the car and which can be flipped open to expose steps for accessing ground level platforms Many American commuter railroads which operate the Comet railcars made by Bombardier have trapdoors to accommodate passengers boarding and alighting on both high level and ground level platforms Amtrak s Viewliner Amfleet and Horizon railcar fleets all have trapdoors Biology editTrapdoor spiders hide in an underground nest they line with their silk and then conceal it with a hinged silk lid the trapdoor 10 Star traps in theatre edit nbsp 19th century Star trap from the Theatre Royal Drury Lane London Now at the Victoria and Albert Museum In theatrical use star traps allowed explosively fast appearances on stage such as jinn appearing in a puff of smoke 6 Fiction editTrapdoors are occasionally used as hidden doors in fiction as entrances to secret passageways dungeons or to secret tunnels They also appear as literal traps into which a hapless pedestrian may fall if they happen to step on one Other types of doors or other objects are also sometimes used as hidden doors A trapdoor figures prominently in a late scene of the 1963 film Charade See also editTrap disambiguation Angstloch Trapdoor function PatioReferences edit Oxford English Dictionary 2nd ed TRAPDOOR meaning in the Cambridge English Dictionary Dictionary cambridge org 2022 05 25 Retrieved 2022 05 31 a b Greens Mill Archived from the original on 2010 11 17 Federal Register Request Access When the Burgular Goes a Burgling Popular Science October 1919 Page 43 a b Trap Doors On Stage Theatrecrafts com Retrieved 12 November 2018 A set of triangular sprung flaps in the stage floor through which an actor can be propelled from a lift below stage Charade 1963 Classen Albrecht 11 April 2016 Death in the Middle Ages and Early Modern Times The Material and Spiritual Conditions of the Culture of Death Walter de Gruyter GmbH amp Co KG p 512 ISBN 978 3 11 043697 6 Winkler Anita Wiederverwertung bis zum Tod Die Welt der Habsburger Schonbrunn Group of museums Retrieved 15 July 2021 Trap door Spider Definition of trap door spider by Merriam Webster merriam webster com External links edit nbsp Media related to Trapdoors at Wikimedia Commons Retrieved from https en wikipedia org w index php title Trapdoor amp oldid 1219599631, wikipedia, wiki, book, books, library,
