Within the _frame-work_ of the press then, were fixed,--first, the screw; underneath the screw, second, the platten, (the impression block or plate,) to be brought down by the screw upon the types; third, the carriage, on which the types were to be placed; and fourth, the table or slide-rest supporting the carriage, with its rounce, or spindle with crank-handle, drum, and connecting girths to run the carriage in and out before and after impressions were made. These, or their original substitutes, were the ‘pieces, parts, or bits’ that formed the four ‘stücke’ spoken of. But what were the ‘wurbelin’? They were two stout screw-bolts, working through nuts in a cross-head, and fixing, immoveably, the cross-block in which the centre screw of the press was wormed. They were variously made, but the object was invariably the same; to resist, by a counter pressure, the upward thrust of the screw, when, by the working of the bar or lever, it was brought down upon the platten, and met the resistance of the forme at the moment the impression had to be taken. [Illustration] Examine now the figure of the press in the accompanying engraving, copied from woodcuts of presses used as printers’ emblems as early as 1498 and 1511; and observe how easily its component pieces could be separated by removing or opening (unscrewing) the two long _wurbelin_ fixed above the working parts, which were probably merely morticed and tenoned together. In the following diagram, outlined from an engraving of the date of 1520, an older fashioned press seems to be shewn, in which the two wurbelin are differently shaped, while their special use is still more plainly to be seen. These unscrewed, the inner portions of the press taken to pieces, and the parts separated or laid aside, no one, unacquainted with the secret, would be able to guess for what object they were designed; or, in the words of the evidence, “know what it is.”