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Stand′ing-press.

A heavy press for bookbinders or other trades. It is named from its being a heavy fixture, in contradistinction to copper-plate, hand printing-presses, and the large variety of portable presses.

The books are put in thin cases and placed between wooden boards, with their backs outward and projecting. The upper bed of the press is screwed down by means of a nut and lever, and allowed to remain for several hours, when they are ready to receive the covering. This may be either of cloth or leather, and the process for both is nearly the same.

Fig. 5558 is a press for smoothing the impression left by the type on printed sheets. The platen is lifted by a screw with an exterior thread, working within a hollow screw in the axis of a bevel gear-wheel turned by a pinion on the shaft of a large hand-wheel, to which the power is applied. A pawl, entering between two of the adjacent teeth on the periphery of the gearwheel, prevents the latter from turning backward under great pressure.

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