after which they are tin. About 400 feet of the marbled slabs are placed a when finished by means of angle irons, bolts and screws. rubbed again with rotten stone and felt, and then few inches apart in iron frames, connected to the sides The first operation is the cutting and carving out of… … THE MARBLEIZED SLATE INDUSTRY. weekly. The sketches were taken from the plant of a temperature of about 160° F. A coal fire is best for means of mallet and chisels, the operator first drawing J. Dickson & Brother, Jersey City, N. J. baking it, hardening the material better than steam. out the…
Munn · Pipe · Patents · Apparatus · Scientific American · Illustrated · Chemical analysis · Bearing surface · Square inch · Largest circulation · Cast Iron · Express money · Postal union · Side pipes · Years ago
Internet Archive · Public domain (published before 1931). Free to use for anything.
