The failure of the system was due to technical problems with the stationary engines and the leather seals on the vacuum pipes.

And out at sea the same companies' trawlers suck up their catches through giant vacuum pipes.with little thought to the future of the region's fish stocks.

The technology required the use of leather flaps to seal the vacuum pipes.

An awful sucking sensation as though a vacuum pipe attached to his head was forcibly drawing his brains out.

Beam pipes: Particles traveled through a vacuum pipe located inside a string of magnets.

The suck of the vacuum pipe had suddenly become the factor on which he depended.

It thinned as the vacuum pipe sucked the atmosphere.

While one was gathering up the debris from Lanyon's suitcase, the other screwed a perfect-fitting plug into the vacuum pipe.

The beams might kink, cut through the vacuum pipe, and cause an explosion.

Running through the core of this train, surrounded by magnets and cold, were two vacuum pipes, one for protons going clockwise, the other counterclockwise.