ntended for refitting valves ground be the weight of the machine, and, as it revolves, is a small lathe, having a bed plate with guide rails, upon hotels or warehouses, by means of water, designed to utilize dig up the earth. The rearward cylinder is armed with which the heads slide, in their… … ing faces to meet the cutters. inder, through a pipe, which is HALL'S MACHINE FOR FITTING STEAM VALVES. The centers, resting on a coiled closed by a suitable valve. spring in the hollow spindle, retreat as the valve is fed up and knock out and pulverize the earth presented to them. This valve is…
Patents · Boiler · Water · Iron · Scientific American · Center · Wooden nails · Steam engines · Typhoid fever · Horse power · Steam engine · Dated september · Wood working · Address mtjnn · Square inches
Internet Archive · Public domain (published before 1931). Free to use for anything.
