Makina a ratchet amakhala ndi zida zozungulira zozungulira komanso pini yodzaza ndi masika yotchedwa "pawl".
Zogwirizira za ratchet lopper zikatsekedwa, zidazo zimatembenukira motsatana, zomwe zimalola kuti pawl aziyenda mosavuta m'mbali zotsetsereka za tini.
Ngati zogwirira ziyambanso kutseguka, giyayo imatembenuka molunjika kumapangitsa kuti pawl igwire m'mphepete mwa mano ndikuletsa kutsegulanso kwa zogwirirazo.