The manufacture of rubber goods : a practical handbook for the use of manufacturers, chemists, and others . rein diameter, is used instead of the heating chest. For the purposeof powdering the surface of the material, either before or after vul-canising, with potato-, rice- or maize-flour, a brushing apparatus isfixed behind the machine a, or else by itself; this is power-drivenalso, and by means of it the material is powdered with the flourand finely brushed. This method of powdering is employed in thecase of the so-called electric-finished goods and single-proofedpaletot-cloths. To return to
The manufacture of rubber goods : a practical handbook for the use of manufacturers, chemists, and others . rein diameter, is used instead of the heating chest. For the purposeof powdering the surface of the material, either before or after vul-canising, with potato-, rice- or maize-flour, a brushing apparatus isfixed behind the machine a, or else by itself; this is power-drivenalso, and by means of it the material is powdered with the flourand finely brushed. This method of powdering is employed in thecase of the so-called electric-finished goods and single-proofedpaletot-cloths. To return to the vulcanising process. Particular care must betaken to see that roller 1, in figs. 42 and 44, is clean. It should borubbed dry with a cloth, because hydrochloric acid is formed uponit and must be immediately wiped off. When dry the roller isrubbed down with fine emery cloth, and then once again with adry cloth. Before starting operations the trough b should also becarefully wiped out, the roller 1 being taken out for the purpose,and afterwards replaced so that it will revolve easily in its 94 RUBBER MANUFACTURE. At each end of the vulcanising roller a brass centre is let in, andinto this the pointed brass screw projects. The screws are adjustedso that the roller runs easily: porcelain rollers and troughs havelatterly come into use in place of wooden ones. When everythingis in readiness the vulcanising liquor is poured into trough h, andvulcanisation now proceeds automatically in the manner depictedabove. The material travels faster as it gets wound up on roller g,since the circumference of the roll is continually increasing; thisis, however, an unimportant point; the rubber cannot be over-vulcanised by the quantity of solution taken up by the rapidly-revolving roller 1, for though on the one hand the roller takes upmore solution the faster it revolves, yet, on the other hand, thetime of contact between rubber and roller becomes continuallyshorter and shorter, and
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Keywords: ., bookcentury1900, bookdecade1910, bookidmanufactureo, bookyear1919
