. Canadian foundryman (1921). e in the moulders pay should lossesoccur due to faulty work on his has a tendency to keep the moulderon the lookout for pouring his metalproperly and prevents his putting upmoulds in a careless manner. A very exact and convenient meansof setting cores for a mould requiringnumerous cores is shown in Fig. plaster paris mould is made whichcorresponds to the mould in which thecores ar? to be set. The core setter setsthe cores on the plaster paris mouldand the moulder, on completing his now-el half, sets it on the plaster reversing the nowel,
. Canadian foundryman (1921). e in the moulders pay should lossesoccur due to faulty work on his has a tendency to keep the moulderon the lookout for pouring his metalproperly and prevents his putting upmoulds in a careless manner. A very exact and convenient meansof setting cores for a mould requiringnumerous cores is shown in Fig. plaster paris mould is made whichcorresponds to the mould in which thecores ar? to be set. The core setter setsthe cores on the plaster paris mouldand the moulder, on completing his now-el half, sets it on the plaster reversing the nowel, prior toplacing the cope half, we find the coresneatly set without disturbing the sandin the nowel. This method has .provedto be very advantageous and is nowused to a great extent. Scrap is Salvaged Several of the metal mixtures in usecontain some turnings or scrap. Brassand bronze scrap from all over the worksis sent to the salvage division, wherethat part of it considered satisfactoryfor use without refining is selected and. Fig. 2—Cutting- castings from gates. stored in the melting room. The skele-ton scrap and defective castings and allof that scrap which is likely to containiron parts is screened and a hand mag-net run through to remove iron or steelparts. The turnings are run throughriddlings and magnet machines and therod turnings burned to remove the part of this scrap in turnings is thenanalyzed and recorded to permit of acorrect mixture when the new metal isadded. All of the new metal is stored in ametal cage and upon being issued to themelter, the weight of the charge is care-fully checked three times. The metal for casting the shackles isregularly melted in oil furnaces in cru-cibles. Experiments with electric melt-ing are low in progress and seem tomeet with success. In oil melting, a melter supervises themelting for three furnaces with a helperfor each two furnaces. An hour in ad-vance of the time for the moulder tocommence work in the morning, themelter w
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectfoundri, bookyear1921
