manivela bedeutet auf Englisch

crank [cranks]▼(a bent piece of an axle or shaft, or an arm attached to the end of a shaft or wheel, used to impart a rotation)
noun
[UK: kræŋk] [US: ˈkræŋk]There are torches that do not need batteries. Some are charged by shaking them, some by cranking a handle and others by repeatedly pressing a lever. = Hay linternas que no necesitan pilas. Unas se cargan agitándolas, otras girando una manivela y otras apretando repetidas veces una palanca.