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| Ama-Wrenches aqala ukuvela ngekhulu le-15 ngendlela yesikrufu sebhokisi (bheka isik. Uyini ukhiye wokuguqula?). Kwakungekho usayizi ojwayelekile, futhi ibhande ngalinye nesikrufu sasenziwa umuntu ngamunye ngumkhandi wensimbi. |
 | Kukholakala ukuthi ama-wrenches okuqala ayesetshenziselwa ukugoqa izintambo zomnsalo we-crossbow, ziqinise ukuze ziqine kakhulu kunesandla somuntu. |
| Ekuqaleni kwekhulu le-16, kwasungulwa izibhamu ezivala amasondo ezazidinga isikrufu sebhokisi ukuze sidubule. Isikrufu sihlohle isibhamu ngokuqhumisa isondo. Lapho isibhamu sidonswa, i-spring yakhululwa futhi isondo laphenduka, okwenza kube nezinhlansi eziphuma kusibhamu. |
| Kwaze kwaba ngasekupheleni kwekhulu le-18 lapho ama-wrenches ahluka khona ngohlobo futhi asetshenziselwa ukufaka zonke izinhlobo esinazo namuhla. Lapho kuqala i-Industrial Revolution, izikele zensimbi ezenziwe ngabakhandi bensimbi zathathelwa indawo izinguqulo zensimbi ezisansimbi ezikhiqizwa ngezinga elikhulu. |
| Ngo-1825 osayizi abajwayelekile bezinsimbi nezikrufu zathuthukiswa ukuze amantongomane, amabhawodi nezikrufu kushintshwe futhi kungadingeki ukuthi kwenziwe njengesethi. |
| Lokhu kwakusho ukuthi izingcezu zemishini zingashintshaniswa, ama-wrenches angasetshenziswa kuma-fasteners amaningi, futhi amantongomane angasetshenziswa kumabhawodi angaphezu kwelilodwa. Bekusho futhi ukuthi noma yimuphi umakhenikha angakwazi ukusebenzisa imoto ngesethi yawo yama-wrenches ajwayelekile esikhundleni sokuthi imoto ihlale ihamba nesethi ethile. |
| Ukunemba kokukhiqizwa kwalesi sisetshenziswa bekuphansi kakhulu, kunembile kakhulu ku-1/1,000″. Ngo-1841, unjiniyela ogama lakhe linguSir Joseph Whitworth wayesethuthukise indlela yokwandisa ukunemba ku-1/10,000 1″ bese, ngokusungulwa kwe-micrometer yebhentshi, kuya ku-1,000,000/XNUMX″. |
| Ngalobu buchwepheshe obusha, kwasungulwa izinga likaWhitworth, elingaphindaphindwa kunoma iyiphi imboni ezweni lonke. |
| Phakathi neMpi Yezwe II, ukuze kongiwe izinto zokwakha, izinga likaWhitworth lalungiswa ukuze kwenziwe amakhanda okubopha abe mancane. Leli zinga laziwa ngokuthi yiBritish Standard (BS). Ama-wrenches e-Whitworth asengasetshenziswa ezingeni elisha, kodwa ama-wrenches amancane kufanele asetshenziswe esikhundleni salokho. Isibonelo, i-wrench engu-¼W ingasetshenziselwa izixhumi ezingu-5/16BS (bona umfanekiso). Yimaphi amasayizi we-wrench atholakalayo? ukuze uthole olunye ulwazi). |
| Ngawo-1970, i-UK yanquma ukulandela ukuhola kweYurophu yonke futhi yaqala ukusebenzisa uhlelo lwemethrikhi. Ama-Wrenches nama-fasteners aqala ukukhiqizwa ngamasayizi amasha ngokuphelele, kodwa njengoba okokusebenza okwenziwe ngaphambi kweminyaka yama-70s kusasetshenziswa, ama-inch wrenches kwesinye isikhathi asadingeka. |
