Similarly for the delivery pressure roller, the weight w′ is adjustable along the bar a′, which is pivoted to link n, and rests upon i at e′. The link i′ is guided in ways in the side frame of the machine, and at its upper end carries the delivery roller d, whose driving gear is shown at o′ ([Fig. 3163]).
It is obvious that there are bars a, a′, and links i, i′, on both sides of the machine, so as to adjust the feed rollers at both ends.
The work table and the two lower rollers are adjusted for different thicknesses of work as follows:
Fig. 3164.
Between the two main side frames m and m′, [Fig. 3164], are two frames having corresponding inclines or slideways, of which the upper carries the work table and the lower rolls.
The lower incline sits on ways k, k, [Fig. 3164], cast on the side frame, and is capable of being moved endwise by means of the hand wheel r, [Figs. 3163] and [3164], which operates a screw threaded into the lower incline. When the lower incline is moved endways, the upper one, which carries the work table, is moved vertically, and as the lower feed rolls are carried by the upper incline, and the upper rolls are guided to move vertically only, the lower rolls maintain their position beneath the upper ones, or in other words, the table and lower rolls move together in a vertical direction only, when the lower incline is operated.
The lower rollers run in bearings formed in the links q, q, [Fig. 3160], which are pivoted at their other ends to the upper incline. On the sides of the incline are lugs through which pass adjustment screws z, which by operating beneath the outer ends of the links q, q, adjust the heights, bearings of the lower rollers so that the uppermost point on the circumference stands about 1⁄100 inch above the level of the work table surface.
The upper surface of the lower incline is shown by the dotted line f, f, f, in [Fig. 3163].