Pottery decorating : a description of all the processes for decorating pottery and porcelain (1907)
Hainbach, Rudolf · London : Scott, Greenwood & son ; New York : D. Van Nostrand Co. · leaf 59
Pottery Decorating 48 defect, however, can be remedied by arranging the crucibles as shown in Fig. 12. Here the bottom of the crucible is provided with a conical opening, closed by a tight-fitting porcelain plug attached to an iron rod coated with an enamel of such refractory character that it will… … Fig. 12. shaped like a hook to facilitate lifting. The lid is divided so that one portion can be easily removed. As soon as the contents are believed to have melted, a rod coated with refractory enamel is dipped into the mass, and if it can be moved to and fro without difficulty, will indicate that…
Pottery craft · Glazes · Color in the ceramic industries
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.