air-cock

When we went into the “air-lock” and they turned on one air-cock after another of compressed air, the men put their hands to their ears and I soon imitated them, for the pain was acute.

The Great Bridge David McCullough 1972

An air-cock is provided in the crown of the bell of each generator and, in case there should be need of examination when charged, cocks are provided in other parts of the apparatus for withdrawing water.

Acetylene, the Principles of Its Generation and Use W. J. Atkinson Butterfield

Jay to open the air-cock, and Norton to start the pump.

The Moon Maid 1923

As Jay was the only man who was to take a greater chance than the others, I walked over and stood beside him, placing my nostrils as close to the air-cock as his.

The Moon Maid 1923

If fresh air failed to enter through the tube Jay was to give the signal, whereupon Norton would reverse the pump, West start the generator, and immediately Jay would close the air-cock again.

The Moon Maid 1923

It was, of course, in some respects a risky proceeding, but with West at the generator, Jay at the air-cock and Norton at the pump I knew that we would be reasonably safe, even if there proved to be no atmosphere without.

The Moon Maid 1923

As soon as the water-valve was closed and the air-cock opened, the compressed air blew all of the water out of the tube.

Respiration Calorimeters for Studying the Respiratory Exchange and Energy Transformations of Man Francis Gano Benedict 1913

Now and then on a tangent the big engine would straighten herself for a race or a runaway, but always the steady hand on the air-cock brought her down just before the critical moment beyond which neither brakes nor the steadiest nerve could avail.

Empire Builders Francis Lynde 1893

Yet his gauntleted hand never falls from the throttle-bar to the air-cock, and his eyes never leave the bubble appearing and disappearing at longer intervals in the heel of the water-glass.

The Grafters Francis Lynde 1893

If now, or at any future time, either of you should experience the slightest sensation of discomfort as the water rises round you, all you have to do is simply to open this air-cock, which communicates with the air-chambers, and the condensed air will at once rush in and expel the water again; then close the sea and air cocks; open this relief valve, which will allow the condensed air to disperse itself in the habitable portions of the hull, and you can at once open the door of communication to the diving chamber, and disencumber yourself of your dress, remembering always to close the door behind you.

The Log of the Flying Fish A Story of Aerial and Submarine Peril and Adventure Harry Collingwood 1886