Lub npe rau tus neeg ruam yuav tuaj los ntawm nws lub peev xwm los ua tus qhev ntsiag to, siv lo lus qub " ruam" rau tus neeg tsis hais lus. Spinning rhawv kom txav zaub mov ntawm cov chav tsis yog tib lub dumbwaiter innovation Jefferson ua nyob rau hauv nws lub tsev ntawm Monticello.
Puas yog dumbwaiter txhaum cai?
Txawm hais tias ntau tus neeg ua haujlwm dumbwaiters tau ua phab ntsa lossis hloov mus rau hauv pantry nooks lossis chaw dai kom zoo nkauj, lawv tseem raug cai, raws li Lub Tsev Haujlwm Saib Xyuas Tsev, yog tias lawv tau khaws cia-rau- hnub tim nrog cov lej hauv tsev, uas qhia meej txog kev tiv thaiv hluav taws thiab qhov ua kom zoo ntawm cov shafts thiab siv qhov kev pom zoo pom zoo…
Leej twg invented the dumbwaiter?
Tus neeg kho tshuab dumbwaiter tau tsim los ntawm George W. Cannon, tus neeg tsim khoom hauv New York City. Cannon thawj zaug ua ntaub ntawv rau patent ntawm lub nres nres (US Patent no. 260776) uas yuav siv tau rau ib tug dumbwaiter rau lub ib hlis ntuj 6, 1883.
Tus neeg ruam txhais li cas?
1: ib lub rooj noj mov lossis sawv ntsug. 2: lub elevator me me siv rau kev xa khoom noj thiab tais diav los ntawm ib zaj dab neeg ntawm lub tsev mus rau lwm qhov.
Tus neeg ruam ruam siv dab tsi?
A dumbwaiter yog hom elevator me me. Txawm li cas los xij, nws yog ib qho me me rau tib neeg kom haum rau sab hauv. Kev lig kev cai, nws yog siv losnqa khoom noj los ntawm cov chav ua noj qis mus rau lub tsev noj mov saum toj. Nws kuj tseem pab cov neeg tos kom tau cov tais diav qias neeg tawm ntawm lub tsev noj mov thiab rov qabnqes mus rau chav ua noj.
