Abstract: A system and method for automatically producing folded and sealed printed products from form sheets includes a high-speed printer interconnected with a conveyor which directs form sheets from the outfeed of the printer to the infeed of a folder gluer. In an alternative embodiment for producing such products from a form web, the system and method includes a burster interconnected with a conveyor to separate the printed form web into form sheets. Means for controlling the system include jam detection means for sensing and stopping all system components in the event of a form jam. Means for communicating between the printer and conveyor align those elements without need for conventional hard wiring or mechanical fasteners. Means for communicating between the burster and conveyor includes a simple cable and cable connections.

Abstract: A spool feed mechanism for a non-metallic, line grass trimmer wherein the free end of the cutting line is spun at high speed for cutting vegetation, includes a spool of cutting line mounted for rotation about the central axis thereof. The spool has first and second ratchet wheels located at respective ends. Each ratchet wheel includes a set of ratchet teeth, one set of which is angularly displaced with respect to the other. A U-shaped, resilient member having first and second pawls provided on the legs thereof is mounted adjacent the spool with the pawls positioned for alternate engagement and disengagement of the respective ratchet wheels. A manually operated trigger assembly coupled to the member moves the latter from a normal position to disengage the first pawl and ratchet wheel and to engage the second pawl and ratchet wheel, whereby the spool is permitted to rotate incrementally to feed a predetermined length of cutting line.