| Show the of a biff wheel the bursting of the great fly wheel or perhaps more properly the driving wheel in one of the mills of manchester N H illustrates the ever present danger hidden in the use of modern machinery there does not appear to have been carelessness or even an accident which usual caution or foresight could have prevented tho automatic governor regulating the supply of eleam to the engine seems to have become clogged the engine suddenly speeded up and the great wheel was set whirling at a pace that tore it into pieces by the enormous centrifugal force thus generated scattering the entire building over the country round about and crushing and wounding the world people this wheel was forty feet in diameter with a face nine feet wide weighing fifty five tons and turning when run at the usual and safe rate sisty revolutions per minute boston commonwealth |
