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Lock | Types, Mechanisms & Benefits | Britannica

SUBSCRIBESUBSCRIBESUBSCRIBEHomeHistory & SocietyScience & TechBiographiesAnimals & NatureGeography & TravelArts & CultureProConMoneyGames & QuizzesVideosOn This DayOne Good FactDictionaryNew ArticlesHistory & SocietyLifestyles & Social IssuesPhilosophy & ReligionPolitics, Law & GovernmentWorld HistoryScience & TechHealth & MedicineScienceTechnologyBiographiesBrowse BiographiesAnimals & NatureBirds, Reptiles & Other VertebratesEnvironmentFossils & Geologic TimeInsects & Other InvertebratesMammalsPlantsGeography & TravelGeography & TravelArts & CultureEntertainment & Pop CultureLiteratureSports & RecreationVisual ArtsImage GalleriesPodcastsSummariesTop QuestionsLists and StoriesBritannica KidsAsk the ChatbotGames & QuizzesHistory & SocietyScience & TechBiographiesAnimals & NatureGeography & TravelArts & CultureProConMoneyVideoslockIntroductionEarly history.Development of modern types.Present status of locks and safes.References & Edit HistoryRelated TopicsImageslock summaryTechnologyEngineeringCivil EngineeringFacebookXhttps://www.britannica.com/technology/lock-securityHistory of Keys - History of Lockslock and key - Student Encyclopedia (Ages 11 and up)Britannica Editors Encyclopaedia Britannica's editors oversee subject areas in which they have extensive knowledge, whether from years of experience gained by working on that content or via study for an advanced degree....HistorydoorkeyFigure 2: Contemporary version of the Yale lock (Left) All pins lifted to proper height by correct key, which can be turned to open lock, and (right) pins lifted to incorrect height by wrong key, lock will not openpalacepin tumblerwidespreadEgyptFaeroe IslandsOld TestamentFigure 3: Warded lock and keyprimitivewardswardswarded lockselaborateFigure 4: Barron tumbler lock, 1778tumblerBarron lockwithdrawnFigure 5: Bramah lock, 1784Joseph BramahHenry Maudslaymass productionlongitudinalSUBSCRIBE The lock industry was in its heydayIndustrial RevolutionNew York CityYaleadaptationLinus YaletrendFigure 6: Combination safe lock The lock cannot be opened until the slots on the three wheels are in line; movement of the dial is transmitted to each wheel by a system of pins (in practice much shorter than shown), arms, and studscombinationinfinitesubsequentCharles Chubbwarded locktumblerwardBarron lockBramah lockSee all related contentbuildingwarding

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