Whenever a proof has been taken, the wooden plug must be placed in reference to the inner tube, as shown in fig. 1091.
As long as the stopcock is closed the water cannot rise in the inner tube.
Then there are "blow-outs" caused by the inner tube giving way.
He worked desperately, and soon the inner tube was as good as ever.
As may be seen by the figure and section, it consists of an inner tube with a thick glass, and an outer tube with a thin glass.
"He wants to go to New Rochelle for an inner tube," he said.
The shoe of the rear left wheel had been badly cut by the sharp stones and the inner tube had been blown out through the cut.
Let us see how quickly we can put on another shoe and inner tube.
The inner tube was open, so that air could reach the inner surface of the wick as well as the outer surface.
They worked feverishly, and in a minute or two got out the inner tube and prepared to patch the damaged spot.