Show the ot a big 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 doea not appear to have been carelessness or even an accident which aanal caution or foresight could have prevented the automatic governor regulating the supply of steam to the engine beems to have become clogged the engine suddenly speeded up and tha 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 tha work 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 ana safe rate biety revolutions per minute boston commonwealth |