Crab
A portable crane or winch, with gear-wheel on the barrel-shaft, in which a pinion is made to work by means of cranks at each end of the pinion-shaft. See CRAB; CRANE.
Twelve hundred entries from the golden age of cast metal — how bells are founded, why brass is not bronze, what a cupola melts and a core withstands — by Simpson Bolland, the trade's great teacher.
A portable crane or winch, with gear-wheel on the barrel-shaft, in which a pinion is made to work by means of cranks at each end of the pinion-shaft. See CRAB; CRANE.