. The Locomotive . r plate was crackedcircumferentially through the bolt holes for a distance of aboutthirty inches and the cylinder casting, as is shown in the illustration,was fractured through the steam valve chest. Upon further examina-tion the piston was found to be drawn off the rod, leaving a space of3/16, and on the rod a collar of metal had been rolled up as thoughthe piston had been driven onto the rod. This condition was probablycaused by the following series of events: When the cross headfailed the steam pressure carried the piston up against the cylinderhead which caused it to let
. The Locomotive . r plate was crackedcircumferentially through the bolt holes for a distance of aboutthirty inches and the cylinder casting, as is shown in the illustration,was fractured through the steam valve chest. Upon further examina-tion the piston was found to be drawn off the rod, leaving a space of3/16, and on the rod a collar of metal had been rolled up as thoughthe piston had been driven onto the rod. This condition was probablycaused by the following series of events: When the cross headfailed the steam pressure carried the piston up against the cylinderhead which caused it to let go and the cylinder casting to fail as the head let go, however, the inertia of the rod and the half of 1920.] THE LOCOMOTIVE, 67 the cross-head attached to it had carried the rod into the pistonwhich caused the collar of metal to be rolled up. The force of thesetwo actions, however, was not sufficient to bring the moving mass torest so that, after the cylinder head blew out, the parts continued their. View of Head End of Cylinder. motion until the nut on the cross-head end of the piston rod broughtup against the stuffing box on the crank end of the cylinder. Whilethis brought the rod and cross-head to rest the remaining inertia of 68 THE LOCOMOTIVE. [July. the piston caused it to be carried off the rod as mentioned above. No satisfactory explanation has been given of the cause of thisaccident. The steam pipes were well drained and the traps foundto be in good working order. The firemen reported that the waterline in the boilers at the time of the accident was what they wereaccustomed to call a low one. There does not seem to have been anypossibility therefore, for water to have gotten into the steam cylinder. The case serves to show that any engine may be subjected at sometime to forces of unknown origin which may lead to a more or lesssevere accident and it furthermore emphasizes the need for engineinsurance. New Method of Connecting Return Pipesto Cast Iron Hea
Size: 1457px × 1716px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauth, bookcentury1800, bookdecade1860, bookidlocomotive32hart
