Then he unrolled and clipped together four small cylinders of paper which had already flopped out of the pneumatic tube on the right-hand side of his desk.
Winston dialled ’back numbers’ on the telescreen and called for the appropriate issues of The Times, which slid out of the pneumatic tube after only a few minutes’ delay.
What happened in the unseen labyrinth to which the pneumatic tubes led, he did not know in detail, but he did know in general terms.
As soon as Winston had dealt with each of the messages, he clipped his speakwritten corrections to the appropriate copy of The Times and pushed them into the pneumatic tube.
Three messages had slid out of the pneumatic tube while Winston was working, but they were simple matters, and he had disposed of them before the Two Minutes Hate interrupted him.
To the right of the speakwrite, a small pneumatic tube for written messages, to the left, a larger one for newspapers; and in the side wall, within easy reach of Winston’s arm, a large oblong slit protected by a wire grating.
He rolled up the completed bundle of work and slid it into the pneumatic tube.
About five years after this, in 1973, Winston was unrolling a wad of documents which had just flopped out of the pneumatic tube on to his desk when he came on a fragment of paper which had evidently been slipped in among the others and then forgotten.
There are no more uses of "pneumatic" in the book.