OVELTIES. shaft. The gland-bush in the watertight partition, and on a cone bearing. Power is transmitted by belt the foremost bearing, were found to have been de- and pulley. In its upper face the stone is provided In certain forms of fire-hydrants, the face of the molished, as well as the head of… … A SIMPLE VALVE MECHANISM the secrew-stem is turn- pairs were completed at one P. M. on the 17th, the FOR FIRE-HYDRANTS. ed in one direction the On the five inches of flat grinding surface thus chief engineer and his assistants having worked con- furnished clippers are held parallel and moved later-…
Internet Archive · Public domain (published before 1931). Free to use for anything.
