CAST IRON. - 



393 



In order to carry out the test, the cylinder was filled 

 with water, the ram inserted, and the packings all made as 

 water-tight as possible. 



The cylinder was then placed between the compression 

 plates of the testing machine, as shown on Fig. 189. The 

 load on the ram was increased until it reached 0'650 tons, 

 when the cylinder burst with a longitudinal fracture about 

 4in. in length ; this fracture is indicated on the left-hand 

 view on Fig. 189. 



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m 



Fio. 189. KLEVATIOX AND SECTION OF CAST-IKON TEST CVI.INDKK. 



In addition to the model cylinder, two tension test 

 pieces were cut from the broken cylinder. These were 



