| Show how bow bollers boilers are made the steel for locomotive boilers Is supplied by contract in the shape of flat rectangular sheets before it Is accepted the tensile and breaking strength of each one Is tested next it is marked off by measure with chalk lines linear for rivet holes which are punched through it by a machine that does the work as quickly and easily as if it were a slice of cheese then the sheet is trimmed to the proper size by a great steel knife which cuts off the edges like paper finally it to is turned into a curved shape by passing between hege rollers and is a riveted to other sheets which make up the cylindrical tube of at the boiler by means of iron bolts A boller making shop is notoriously the nois lest iest place on earth but it is su I 1 to find glace how ow soon boon one gets used to t the b clamor ia so that it would be possible to lie ile down and sleep amid it all there is nothing like getting used to things every now aud and then a man la in killed in t the it e works by a 11 boiler roll upon up op him he has hail ach sich long practice in eluding dangers of tl tle jort dort that ae e becomes too indifferent stepping out of the way wat a moment too late |
