Show cutting cuttong up B battleships itle ships F formerly the cutting up ot of huge masses of steel like the armor belt on old battleships was a herculean job cos costing ting much time money and ana use ol of powerful machinery to tear up an old battleship was the labor of months requiring the careful cutting of no end or of rivets and laborious chiseling chi and hammering such a job can now be done in a jiffy by a big blowpipe in which air and coal gas are burned under pressure two fine nozzles close together do the job or it 11 coal gas Is not handy acetylene or gasoline vapor can he be used of course the blowpipe Is connected to the gas gaa holder by a strong rubber hose with the gas lighted and tho air turned on the hardest steel runs off like a bar of melting wax the cut la Is surprisingly clean and smooth the metal in no way being injured the same sure way can be used in the cutting down of big trees and big thick timber instead of the slower and more expensive ax and saw it can be used instead of drills and chisels in drilling holes and plan ing off rough steel it greatest disadvantage Is difficulty in getting coal gas but the gasoline takes its place pretty well |