o operating cords attached to controlling in service. levers. The accompanying illustration represents sections of vari- ous brasses which were studied under the microscope after New Special Service Blowers they had been subjected to a variety of treatments. T the exhibit of the B. F. Sturtevant… … at the Exposition. One of these includes a safety fea- ‘Closed Fireroom Forced Draft Blower forced draft. In ture consisting of a fork contrivance to insure positive stop this machine the at any desired position of a load. fan bearings are eliminated by designing the machine with The second block…
Shipbuilding -- Periodicals · Shipbuilding industry -- Periodicals
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
