Another very excellent method of vulcanizing cut sheet goods consists in placing them in a solution of the polysulphides of calcium at a temperature of 140° C. Rubber employed for the manufacture of cut sheets is often coloured by such pigments as vermilion, oxide of chromium, ultramarine, orpiment, antimony, lamp black, or oxide of zinc, incorporation being effected either by means of the masticator or by a pair of rollers heated internally by steam, and so geared as to move in contrary directions at unequal FIG. [Please select]
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How to Make 448 Voltammeter, Pocket 330 Voltmeter, Battery 153 Vulcanizing Press for Rubber Stamps 394 W Walking Stick. [Please select]
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To overcome this Goodyear labored year after year to discover a method of hardening or, as it is called, vulcanizing rubber. [Please select]
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[38] The process of vulcanizing was made practicable during the ten years ending in 1850. [Please select]
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Even when the secret of vulcanizing, as it is called, was discovered, five years passed before he was able to conduct the process with absolute certainty. [Please select]
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By means of a table knife spread the plaster smoothly and then invert the plate upon the model and press down until [Illustration: Vulcanizing Press for Rubber Stamps] the distance pieces are struck. [Please select]
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