42с

1893г

,« STEEL CASTINGS AS USED IK MARINE MACHINERY. ■|"fa —ni «.n I. i . ' ' '*", ' '  

;fo"Xiin thet ships of the nftvy, encouraged its use.

teppt« showed that, while patterns of simple fori t_io |W» sefction could be made quite successfully, ^rfjjn J"ie#"B required much care and skill to avoid tearing oi&jrdness, which might develop partly from the grea [e^in cooling in the hard unyielding mould,... (Información más detallada)