An apparatus which subdivides an adhesive-coated web of paper or imitation cork into a succession of uniting bands which are draped around groups of coaxial cigarettes and filter plugs to form filter cigarettes has two drums rotating in opposite directions about parallel axes. One of the drums is a suction drum and serves to advance the leader of the web toward the nip of the two drums where the leader is severed to yield successive uniting bands. The suction drum has a number of equidistant axi...

Paper chad and fuzz removal means for a rotary punch wheel associated with a complementary rotary female die wheel, the female die wheel having an open annular discharge slot in one side thereof communicating with its punch bores, a stationary chad collector ring or manifold having an open annular slot in one side thereof in registry with the annular slot in the female die wheel to form a joint chamber therewith for receiving chad, and a source of vacuum communicating with the joint chamber for ...

An apparatus for continuously cutting thin trim strips from a moving printed web so as to form uniform web products and removing the trim strips from the cutting area is provided, for in-line operation with a web press. The gapping of the web is effected by a cutting cylinder with a hollow bore, which carries at least two pairs of spaced cutting knives that act against a stationary shear blade. The space between each pair of blades connects with the cylinder bore, which in turn is connected to a...

A constant current driving device for constant current driving of a plurality of elements connected in series with each other by a pulse width modulation constant current driving circuit includes: switching elements respectively connected in parallel with the plurality of elements connected in series with each other; a control circuit for performing control to bypass a driving current flowing through the other elements than an arbitrary element to be measured via the respective switching element...

A perforating mechanism for simultaneously perforating a web of material both longitudinally and transversely includes a revolving matrix roller and a plurality of discs carrying perforation pins which cooperate with holes in the matrix roller for the purpose of perforating a web of material therebetween. After the pins have worn down, they can be reground and adjusted.

A blade mounting device for a rotary cutting machine in which the blade is formed with a groove or shoulder to receive a locating element which acts to hold the blade readially in a groove of a cutting cylinder and also adjusts the position of the blade in a perpendicular direction. The locating element is adjusted by means of an eccentric mounted on a pivot, the eccentric having a hexagonal head for adjustment purposes, and a clamping screw to fix the eccentric in position. The locating element...

Opposed C-shaped cuts can be made in plastic film in a continuous manner by passing the film between a punch roll bearing specially designed punches and a mating roll having wells for receiving the punches. The special design of the punches overcomes the problem of stretching and tearing of the film normally encountered in attempting to make such cuts in plastic film using a rotary punch.

A color control signal converter for converting a digital code to a color control signal includes a device for controlling the duration of pulses in accordance with the digital code, and a device for developing the color control signal in accordance with the duration of the pulses.

A perforating, cutting, or embossing apparatus consisting of a pair of coacting rotatable rollers, one of which has mounted on its periphery a urethane punch, while the other roller provides an anvil in the form of a metallic die plate designed to cooperate with the punch to perform the desired operating function.

The perforation punching is effected by rotary punching tools secured to ving shafts and including a first tool provided with readjustable punch pins mounted in a receiving body and a cooperating second tool provided with punch dies. The punch pins are regrindable by a grinding attachment, to tangency of their working ends with a common circle concentric with the axis of rotation of the first tool. The grinding attachment is mounted adjustably on the machine frame and permits regrinding the pins...