Abstract: An improved elastomer covered feed roll assembly (32R) for use in a feed/pull roll set combination (36) in a sheet finishing machine (12) comprises a roll core (50) having a cylindrical surface (60) with multiple longitudinally spaced and circumferentially offset elongated keyways (80, 82, 84, 86) each configured as a locking slot. Multiple replaceable flexible feed cover sections (52, 54, 56) each incorporating a flexible backing (120) and an elastomeric layer or coating (122) are removably mounted on the roll core by locking components (74, 76) on opposite ends (70, 72) of each of said replaceable flexible feed cover sections, the locking components of each replaceable flexible feed cover section engaging a locking slot (80, 82, 84, 86) corresponding to the feed cover section. The keyways draw together the opposite ends (70, 72) of corresponding cover sections to form corresponding end joints (96, 98, 100).

Abstract: An improved elastomer covered feed roll assembly (32R) for use in a feed/pull roll set combination (36) in a sheet finishing machine (12) comprises a roll core (50) having a cylindrical surface (60) with multiple longitudinally spaced and circumferentially offset elongated keyways (80, 82, 84, 86) each configured as a locking slot. Multiple replaceable flexible feed cover sections (52, 54, 56) each incorporating a flexible backing (120) and an elastomeric layer or coating (122) are removably mounted on the roll core by locking components (74, 76) on opposite ends (70, 72) of each of said replaceable flexible feed cover sections, the locking components of each replaceable flexible feed cover section engaging a locking slot (80, 82, 84, 86) corresponding to the feed cover section. The keyways draw together the opposite ends (70, 72) of corresponding cover sections to form corresponding end joints (96, 98, 100).

Abstract: Corrugated boards are creased in three stages: the first being controlled crushing of the board to force air out of the flutes; the second is applying heated moisture or mist to the board to increase pliability; and the third is creasing the board by passing it between endless conveyor belts one of which has an elongated scoring bead projecting from its inner surface.

Abstract: The invention is a cylinder cover engageable with a channel. The cylinder cover includes a flexible blanket with two ends, the ends configured to substantially abut when the blanket is circularly wrapped. Further, the cylinder cover includes a female member attached to the first end of the blanket, the female member having a leg connected with and opposing a resilient engaging element by a base member. The resilient engaging element is configured to frictionally engage a sidewall of the channel. Attached to the second end of the blanket is a substantially rigid male member. When engaged with the channel, the blanket is substantially continually supported by a rigid substrate.

Abstract: The invention is a cylinder cover engageable with a channel. The cylinder cover includes a flexible blanket with two ends, the ends configured to substantially abut when the blanket is circularly wrapped. Further, the cylinder cover includes a female member attached to the first end of the blanket, the female member having a leg connected with and opposing a resilient engaging element by a base member. The resilient engaging element is configured to frictionally engage a sidewall of the channel. Attached to the second end of the blanket is a substantially rigid male member. When engaged with the channel, the blanket is substantially continually supported by a rigid substrate.