Abstract: A web folding device is disclosed for use in combination with a web processing machine which draws the web from the web folding device in a downstream path of travel, the device comprising:a frame;an upper roller mounted to the frame and extending horizontally across the path of travel of the unfolded web;a motor driven roller mounted to the frame below the upper roller and extending horizontally across the path of travel of the folded web;a pair of fold plates mounted to the frame and disposed between the upper roller and motor driven roller, the fold plates defining a channel through which the web passes and is folded by the fold plates contacting the surface of the web on opposite sides of the fold line;a driven exit roller mounted to the frame and positioned downstream from the motor driven roller;at least one drive belt connecting the motor driven roller to the driven exit roller, such that both rollers rotate in the same downstream direction;whereby when the web processing machine is not drawing the web

Abstract: In a duplicating machine for duplicating images on both sides of copy sheets including a blanket cylinder and an impression cylinder, a mechanism for handling the sheets and re-feeding the sheets back to the impression cylinder for duplex copying. The blanket cylinder has first and second images transferable to the copy sheets. The impression cylinder forms a nip with the blanket cylinder for transferring the copy sheets through the nip. A first gripper on the impression cylinder releasably engages a lead end of a copy sheet and moves the sheet through the nip to transfer the first image on a first side of the sheet. A chain gripper releasably engages the lead end of the sheet transferred thereto by the first gripper and transports the sheet away from the impression cylinder. A swing gripper releasably engages a trail end of the sheet in timed relation with release of the sheet by the chain gripper and re-feeds the sheet back to the impression cylinder.