Bakin karfe tace raga don injin wanki
Masu wanki da hoses sun bayyana a cikin 1920s.
A cikin 1929, kamfanin Jamus Miele (Miele) ya samar da injin wanki na farko na lantarki a Turai, amma bayyanarsa har yanzu "na'ura" ce mai sauƙi, ba ta da alaƙa da yanayin iyali gaba ɗaya.
A cikin 1954, kamfanin GE na Amurka ya samar da injin wanki na tebur na farko na lantarki, wanda ba kawai ya inganta aikin wanki ba, har ma ya inganta girma da bayyanar gaba ɗaya.
A Asiya, Japan ce ta fara nazarin injin wanki. A tsakiyar zuwa ƙarshen 1990s, Japan ta ƙera na'ura mai kwakwalwa ta kwamfuta mai cikakken atomatik injin wanki. Kamfanonin da aka wakilta sune Panasonic (National), Sanyo (SANY), Mitsubishi (MITSUB ISHI), Toshiba (TOSHIBA) da sauransu.
A sa'i daya kuma, kasashen Turai da Amurka sun kera injin wankin gida zuwa na'urorin dafa abinci tare da hadaddiyar hoto. Kamfanoni da Turai da Amurka ke wakilta sun haɗa da Miele, Siemens, da Whirlpool.