g the operation of cleaning, after it is once in position ready for work. The only parts of the AN IHFBOTED BOILEB TUBE CLEANEB. cleaner that show any wear with long use are the The illustrations represent a boiler tube cleaner so chisels or cutting tools, and as they last well and are constructed… … He says : "The economic value of an individual is what it has or less contact with the inner surface of the tube, for cost his family, the community or the State for his removing scale or other matter, the cutting edges of living, development and education ; it is the loan which the tool being…
Patents · Dock · Meteorite · Floating · Munn · Scientific American · Curling iron · Candle power · Floating dock · Lifting power · White mountains · Great meteorite · Rapid transit · Rotary steam · Trade school
Internet Archive · Public domain (published before 1931). Free to use for anything.
