Canadian foundryman (1921) . of dryingcores, molds, etc., while extensively usedin European countries, has not receivedmuch consideration from cast iron pipemanufacturers on this continent, dueprobably to the existence, hitherto, ofcheap and easily obtained coke. Gas issupplied by two D-4 Duff gas producersmanufactured by the Dowson & MasonGas Plant Co., of Levenshulme, Man-chester, Eng. Each of these producersis capable of gasifying 1,100 pounds ofcoal per hour, and being worked withsteam blast at approximately 70-80pounds pressure, furnish what is knownas a semi-water gas. After some ex-peri
Canadian foundryman (1921) . of dryingcores, molds, etc., while extensively usedin European countries, has not receivedmuch consideration from cast iron pipemanufacturers on this continent, dueprobably to the existence, hitherto, ofcheap and easily obtained coke. Gas issupplied by two D-4 Duff gas producersmanufactured by the Dowson & MasonGas Plant Co., of Levenshulme, Man-chester, Eng. Each of these producersis capable of gasifying 1,100 pounds ofcoal per hour, and being worked withsteam blast at approximately 70-80pounds pressure, furnish what is knownas a semi-water gas. After some ex-perimenting it was decided to use forfuel a mixture of pea coal and cokebraize or screenings, this being found tofurnish a very satisfactory gas of highcalorific value, and economical in that itmade use of a portion of the coke pilethat was formerly of little use. Thatportion of the piping which receives thegas from the producer outlets is com-posed of fabricated steel plate lined withfire-brick to withstand the intense heat. FIG. 1—Turntable and ramming stool. Note lugs on opposite side forholding flask. Flasks are held the entire circumference of table, as onemold is rammed, the table is rotated, bringing another into line to be rammed. of the gas, and provided with suitabledoors to permit entrance for cleaning atrequired intervals. The mam itself lead-ing from the producer house to the foun-dry is built entirely of brick, the mortarused being a mixture of fire clay andcement. The piping throughout thefoundry is cast iron exclusively. Thewhole system is provided with explosiondoors at designated points to preventany possible damage that might becaused by explosions. Same Flask Used Four or Five TimesPer Day The chief advantages of this methodof drying are the increase in productionthat is secured and the smaller initialoutlay l-equired for flasks and of obtaining one pipe in one flaskper day, as in the old system, as many asfour or five pipes per day can be ob
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectfoundri, bookyear1921
