Silverwork and jewelery; a text-book for students and workers in metal, by H. Wilson (1903)
Wilson, H · New York, D. Appleton and company · leaf 47
sufficient quantity has been gathered,the sweep should be burned in an irontray to remove any trace of organicmatter, the resulting ash well tried overwith a magnet to remove any bits of ironwire, and the sweep sent to the refiners,who, after making an assay, will allow forthe precious metal it may… … Fig. 3. 40 draw-bench (fig. 3) through the successively poussediminishing holes in a draw-plate (fig. 4). Dra?If the rods are small in section and thequantity of wire required is also small, thedraw-plate can be fixed in a bench-vise andthe rods drawn through by hand.To do this, first hammer the…
Silverwork · Jewelry
Internet Archive · New York Public Library · Public Domain Mark 1.0. Free to use for anything.
