Pressing

Pressing. Removing the inequalities on the surface of a sheet caused by the impression of the types, and rendering it as smooth as it was before being printed on. The sheets having been taken down from the drying poles, are carried to the warehouse. The warehouse boys then place them between exceedingly smooth, polished pasteboards, called glazed-boards. This operation, which is performed with great dexterity, is thus minutely described in “The American Printer:”—

“We will suppose the pasteboards to have sheets between them, which will be the case after they have once been used. The warehouse being provided with long tables or benches, secured to the wall, and a sufficient number of moveable tables about the size of the largest paper, the warehouseman places one of the small tables endwise against the long one, forming a right angle, upon which to lay the pressed sheets as they come out of the boards; the boy then takes his stand at the right side of the table, with the dry impressed sheets at his right hand and the pasteboards at his left, somewhat elevated, leaving sufficient space before him to fill in the sheets. He then proceeds as follows: He first moistens the thumb of his right hand and reaches across to the pasteboard at his left, drawing one off with his thumb and placing it before him. He then catches a sheet of the dry paper also with his right hand and places it as near the centre of the pasteboard as possible, then twisting the body nimbly round to the left, he slides the pressed sheet from the pile of pasteboards to the table at his left side, and in resuming his former position, again draws off a pasteboard with his thumb; and so on, till the gross or bundle is filled. It is then laid aside, and another bundle filled and laid across the former, taking care always to keep the bundles separated until they are put in press, when they are separated by smooth boards made of cherry or other hard wood. The bundles being all filled in, the warehouseman proceeds to fill up the standing press, putting in one bundle at a time and placing a pressing-board between them; there should also be a stout plank introduced between the top board and the platen. In case the press should not hold quite as much as desired, more may be got in by unscrewing the press after it has once been screwed down. The press is finally screwed down as tight as possible. It should remain so for at least twelve hours, when it should be entirely emptied before the sheets are taken out of the boards. Care should be taken to keep the sides of the piles or heaps perfectly even.”