upset

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upset

1. a tool used to upset a bar or rivet; swage
2. a forging or bar that has been upset in preparation for further processing

upset

[′əp‚set ( noun ); əp′set ( verb )]
(engineering)
To increase the diameter of a rock drill by blunting the end.
(materials)
A defect occurring in timber as a result of a severe blow that breaks the fibers across the grain of the wood.
(metallurgy)
A localized increase in the cross-sectional area of a metal during working, caused by the application of pressure; enables a head to be formed on fasteners such as bolts.
(mining engineering)
A narrow heading connecting two levels in inclined coal.
A capsized or broken skip.

upset

1. To shorten and thicken by hammering, as a bar of heated metal struck on the end.
2. In the region of a weld, a localized increase in volume resulting from the application of pressure.
3. A defect in timber due to a severe blow that breaks the fibers across the grain.
References in classic literature ?
George impressed upon us to take a change of under-things and plenty of socks, in case we got upset and wanted a change; also plenty of handkerchiefs, as they would do to wipe things, and a pair of leather boots as well as our boating shoes, as we should want them if we got upset.
And if it be wanted, then, perhaps, if I am ready, poor Jonathan may not be upset, for I can speak for him and never let him be troubled or worried with it at all.
Perhaps it was reading the journal yesterday that upset me, and then Jonathan went away this morning to stay away from me a whole day and night, the first time we have been parted since our marriage.
Please the good God, all this may not upset him again.
Marya Dmitrievna, who knew how the prince had received the Rostovs, pretended not to notice how upset Natasha was and jested resolutely and loudly at table with the count and the other guests.
As soon as the jury had a little recovered from the shock of being upset, and their slates and pencils had been found and handed back to them, they set to work very diligently to write out a history of the accident, all except the Lizard, who seemed too much overcome to do anything but sit with its mouth open, gazing up into the roof of the court.
Edgar," seen the chest open, which, knowing something of its history and guessing more, so upset him that he had fainted.
The breeze upset them, the eddies near the ground upset them, a passing thought in the mind of the aeronaut upset them.
Then heavy motor-cars began to run about on only a couple of wheels, one behind the other, which for some reason upset Tom dreadfully, and made him gloomy for days after the first one passed the shop.
Is it possible, gentle sir, that the nauseous and idle reading of books of chivalry can have had such an effect on your worship as to upset your reason so that you fancy yourself enchanted, and the like, all as far from the truth as falsehood itself is?
It is all exactly as you state it," said the canon; to which Don Quixote returned, "You also went on to say that books of this kind had done me much harm, inasmuch as they had upset my senses, and shut me up in a cage, and that it would be better for me to reform and change my studies, and read other truer books which would afford more pleasure and instruction.
We were upset over one another, and I know not how the adventure would have ended, if the Canadian, still enraged with the beast, had not struck it to the heart.