les, etc., clean and the boiler, through the pipes connected up to the former the second or “‘hard” pressing of paraffine wax; the first, or free from all scale or deposit of any kind, but also lends at both the top and bottom of the latter, and thus a slight ‘«slack” pressing being made in presses… … A mixture of bone asb, silica, and carbon is placed in a sented in Figs. 3 and 4, that shown by Fig. 3 being crucible and upon it a layer of granulated copper, which is stationary and bolted down to the foundation plate, while PRES§ FOR THE MANUFACTURE OF OILS. in turn covered with the above…
Internet Archive · Public domain (published before 1931). Free to use for anything.
