e placed hori- A special method of repairs with cast brass for zontal air heating drums and a series of nearly vertical large and valuable castings which cannot well be air inlet and heating pipes, which connect the drums spared while new ones are procured, suchas cylinder Wisi ue with the external… … tion between the new and the old parts, though the McKinnon, of North Sydney, Nova Scotia, Canada. OAKES & CAMP’S HOT AIR FURNACE. chief reliance ison the shrinking of the new casting around the endof the old one. The heatingof the old oe the hot air space between the casings through open- portion…
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