Improvements in the Manufacture of Lampblack
126,560. Hutchins, T. W. S. Sept. 23, 1918. Addition to 124,557. Carbon. - In means for manufacturing lampblack as described in the parent Specification the electric arc is replaced by one or more oxyhydrogen, oxyacetylene, or other high-temperature gas flames.
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Zusammenfassung: | 126,560. Hutchins, T. W. S. Sept. 23, 1918. Addition to 124,557. Carbon. - In means for manufacturing lampblack as described in the parent Specification the electric arc is replaced by one or more oxyhydrogen, oxyacetylene, or other high-temperature gas flames. |
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