Mbiri yoyeretsa mazenera

Pomwe pakhala mazenera, pakhala pakufunika kuyeretsa mawindo.
Mbiri yoyeretsa mawindo imagwirizana ndi mbiri ya galasi. Ngakhale kuti palibe amene akudziwa nthawi komanso kumene galasi linapangidwira, liyenera kuti linayambira zaka za m'ma 2 BC ku Egypt kapena Mesopotamiya. Mwachionekere, zinali zosafala kwambiri kuposa masiku ano, ndipo zinkaonedwa kuti ndi zamtengo wapatali kwambiri. Anagwiritsidwanso ntchito m'chiganizo pamodzi ndi golidi m'Baibulo (Yobu 28:17). Luso lakuwomba magalasi silinafike mpaka kumapeto kwa zaka za zana loyamba BC, ndipo potsiriza linayamba kupangidwa mochuluka chapakati mpaka kumapeto kwa zaka za m'ma 1800. Apa ndipamene idayamba kugwiritsidwa ntchito kupanga mawindo.

Mawindo oyambirirawa ankayeretsedwa ndi amayi apakhomo kapena antchito, pogwiritsa ntchito njira yosavuta, ndowa yamadzi, ndi nsalu. Sizinali mpaka ntchito yomanga-kuyambira mu 1860-kuti kufunikira kwa oyeretsa mawindo kudabwera.

Kenako Kunabwera Squeegee
Kumayambiriro kwa zaka za m'ma 1900, kunali squeegee ya Chicago. Sizinawonekere ngati squeegee yomwe mukuidziwa komanso kukonda lero. Zinali zokulirapo komanso zolemera, zokhala ndi zomangira 12 zofunika kumasula kapena kusintha masamba awiri apinki. Zinachokera ku zida zomwe asodzi ankagwiritsa ntchito kukwapula matumbo a nsomba m'mabwato. Izi zinali zaluso kwambiri mpaka 1936 pamene mlendo wina wa ku Italy dzina lake Ettore Steccone adapanga ndi kutsimikizira kuti squeegee yamakono, mukudziwa, chida chopangidwa ndi mkuwa wopepuka, chokhala ndi tsamba limodzi lakuthwa, losinthika la raba. Moyenera, idatchedwa "Ettore." Chodabwitsa n'chakuti, Ettore Products Co. akadali mtsogoleri wotsogola wamakono amakono, ndipo akadali wokondedwa pakati pa akatswiri. Ettore ndiwofanana kwambiri ndi zinthu zonse kuyeretsa mawindo ndi mazenera.

Masiku Ano Njira
Squeegee inali chida chosankhidwa bwino cha oyeretsa mawindo mpaka kumayambiriro kwa zaka za m'ma 1990. Kenako kunabwera dongosolo lamitengo yodyetsera madzi. Makinawa amagwiritsa ntchito akasinja amadzi oyeretsedwa kuti adyetse madzi oyeretsedwa kudzera pamitengo yayitali, yomwe imatsuka ndikutsuka dothi ndikuwuma mosasunthika osasiya mikwingwirima kapena zopaka. Mitengoyi, yomwe nthawi zambiri imapangidwa kuchokera ku galasi kapena kaboni fiber, imatha kufika 70 ft, kotero kuti oyeretsa mawindo azitha kuchita matsenga atayima pansi. Dongosolo lamitengo yodyetsera madzi singotetezeka kokha, komanso limapangitsa kuti mazenera azikhala oyera kwa nthawi yayitali. Ndizosadabwitsa kuti makampani ambiri oyeretsa zenera masiku ano amasankha dongosolo ili.

Ndani akudziwa zomwe teknoloji yamtsogolo ingakhale nayo, koma chinthu chimodzi ndi chotsimikizika: malinga ngati pali mazenera, padzakhala kufunikira koyeretsa zenera.