He told me that he wanted more air, and that this was the signal to the workers of the air-pump.
It, too, was unattached at the other end; it had no connection with the air-pump.
When the pan, after continued boiling, requires to be refitted, the pipes (l and w) are connected to an air-pump.
It communicated with an air-pump by means of a flexible tube.
We hurry into the heavy rubber suits—and the engineers are already dressed—and inflate at the air-pump taps.
The air-pump, feed-pump, and plug-rod were worked from the balance-bob.
Screw the flask on the plate of the air-pump, exhaust the air, take it off the plate, and weigh it.
The air-pump links, from the centre of which the air-pump rod is suspended.
A new kind of existence has been given to bodies in the air-pump.
There even exists for this purpose a machine, which is called an air-pump.