American School of Correspondence · Chicago, American school of correspondence · leaf 253
safe to estimate from twenty-five to thirty-threeper cent greater production than with the common roll. The front metallic roll, one and tliree-eighths inches in diame-ter, is made with forty-four fiutes, and in figuring the draft, thisshould be called ig^ or 1| inches in diameter, which is… … CALENDER ROLL 3 D I A. Fig. 158. Diagram of Drawing Frame Draft Gearing. is made with twenty-seven flutes and should be called | or 1|-inches in diameter, and the back roll, 1^ inches in diameter, ismade with eighteen flutes and is called y^ or 1| inches in diam-eter. With these points, it is…
Textile industry and fabrics
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