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A piece of stout leather strap nailed to the near long rib of a wooden press, at the fore end, and padded under so as to raise it sufficiently high; its use is to check the running out of the carriage, by friction, at the proper place to permit the tympan to rise clear of the platen, when the pressmen are in a train of work, a similar piece being nailed under the carriage. In iron presses a bar projects between the ribs on which is secured an inclined plane of wood, and in some iron presses a spring is screwed on the near long rib for the purpose. It prevents the sudden jerk upon the back stay, and also upon the carriage when it is run out.

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