16, 1965 INVENTOR RAY kuv? MILES ATTORNEY United States Patent m 3, 257, 018 HAND TRUCK Ray P. Miles, 8575 N. Melody Laue, Northfield, Ohio Filed Aug.
Leej twg invented the move dolly?
Thomas Dent hais tias Lub xub pwg Dolly yog nws thawj qhov kev tsim, tab sis ntau cov cuab yeej los pab cov neeg tsiv teb tsaws chaw tuaj yeem ua haujlwm. Nws hais tias nws zoo siab heev los ua nws tus kheej ua lag luam tsuas yog peb xyoos tawm hauv tsev kawm qib siab.
Vim li cas lub tsheb tsheb tseem hu ua dolly?
Yog li cov khoom siv ntoo siv nyob rau xyoo pua 18th los ua kom cov khaub ncaws hauv lub tshuab ntxhua khaub ncaws hu ua "dolly" vim tus neeg siv tuav nws ob "caj npab" thiab twisted, ua tus gizmo ob "ceg" churn dej hauv lub tub. … Yog li “dolly” yuav hu ua vim nws “pab” lossis “ua haujlwm” hauv txoj haujlwm ntawm kev txav khoom hnyav.
Thaum twg ob lub log dolly tsim?
Kev tsim lub laub ob lub log tau piav qhia raws li thaum ntxov li 3400-2800 BCE, thaum kawg ntawm lub xyoo pua plaub, hauv Tebchaws Yelemees.
Dab tsi yog qhov sib txawv ntawm lub tsheb tsheb thiab lub tsheb dolly?
A dolly yog lub platform nrog plaub lub log thiab ob lub qag uas tuaj yeem siv los thauj khoom hnyav los ntawm ib qho chaw mus rau lwm qhov. … Tsis zoo li cov tsheb thauj khoom siv tes, uas tuaj yeem swb hauv qab cov khoom hauv av, khoom yuav tsum tau nqa mus rau dolly thiaj li thauj tau lawv.
