EntityQ11171014· pop 29· linked from 148 articlesratchetSign in to savemechanical device that allows continuous linear or rotary motion in only one directionConnectionsclockEntitycomputer keyboardEntitydiodeEntitytypewriterEntityloomEntitycogwheelEntityhandcuffsEntityseat beltEntityroller coasterEntityjackEntitynatural rubberEntitylinear motionEntitycheck valveEntitycapstanEntityslackliningEntityrack and pinionEntitycable tieEntityasymmetryEntityturnstileEntityescapementEntityCategoriesMechanisms (engineering)