A trap Y and an air pipe Z provide means for the escape of gas.
Sailors paid out the rope, life line and air pipe as the man in divers suit vanished under the water.
So we find growing up in the walls of this air pipe, cells which turn themselves into rings of gristle, or cartilage.
Air compressed to a sufficient pressure is conveyed by an air pipe and introduced at the lower end of the rising main.
When a man could stand it no longer he would put his head under the air pipe for a moment.
I claim, 1st, Constructing the air pipe of a furnace-blast heater of fire clay, substantially as described.
The false bottom is traversed in its whole length by an air pipe, communicating with the atmospheric air outside the trough.
Two large barges of kerosene were sent into the tunnel, and an air pipe connected to them.
As Harding said later: "I felt as though I was in a drift on the 2,800-foot level, into which no air pipe had been carried."