onstant labor of three or four of which melts off the tops and bottoms of the cans. men to keep up the supply in the cupola. The black object of lining being to prevent the hot metal from burning through the ladle. When the moulds are all coke used is made of a mixture of soft coal dust and The… … MANUFACTURE OF SASH WEIGHTS FROM OLD TIN CANS. ovens and broken up into small chunks. The sash the cupola through a two Inch hole into a large ladle again for the market. As soon as the bottoms of the holding about 1,500 lb., from which the small ladles weight patterns are made of white pine,…
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