Abstract: An ink fountain having doctor blades clamped on the upstream and downstream sides to engage a rotary cylinder and an overflow ink barrier at one end of the ink fountain providing an overflow wall for the discharge of ink from the ink fountain into a drain chamber. Longitudinal channels beneath the doctor blades communicate with the drain chamber for the discharge of ink into the drain chamber.

Abstract: A plate lockup for locking a plate on a rotary cylinder of a printing press in which a pair of deflectable springs carried by the rotary cylinder are deflectable by an actuator interposed between them. The actuator deflects one spring to facilitate lockup of a trailing end of a printing plate and then deflects the other spring to clamp a lead end of a printing plate against a lead end register carried by the printing press.

Abstract: A cylinder construction in which a flexing force can be exerted on the interior surface of a hollow cylinder intermediate the ends thereof. The hollow cylinder is mounted for rotation about a shaft having an eccentric bearing intermediate the ends thereof. An eccentric bearing at each end of the shaft is adjustable to neutralize the effect of the intermediate bearing or to adjust the flexing force on the cylinder.

Abstract: A multiple product folder in a high speed rotary web printing machine for the production of signatures with various folds has a plurality of various operating cylinders, such as a pair of web cutting cylinders, a signature collecting cylinder, signature transfer and folding cylinders for one transversal and for a second parallel fold and signature delivering cylinders, wherein certain cylinders are driven by gear trains for accomplishing more than one slow-down speed, which gear trains have shiftable couplings for changing the speed of the transfer cylinders from a full speed to a slow-down speed according to the requirements of forwarding and delivering of certain signatures, whereas a shifting from a slow-down to a full speed can be performed for a certain folding action and the slow-down delivery yet can be maintained.

Abstract: A variable stroke positive displacement liquid metering pump unit having a rotatable plunger which is moveable in an axial direction within a cylindrical pump casing. The plunger has a flat portion which is adapted to overlie the inlet and outlet ports during different degrees of rotation. A variable stroke drive means is provided to vary the distance the plunger moves outwardly of the casing in a liquid infeed direction to vary the amount of liquid metered.A plurality of pump units are provided in a line across a printing couple with a spur gear mounted on each plunger of each unit to impart rotary motion to the plunger and with adjacent spur gears of adjacent units being connected in a gear train to a common drive means. A rotatable cam shaft common to all pump units is connected to the common drive means and cam rises on the shaft engage a portion of each of the variable drive means to provide axial movement of the plunger in the pump casing.