Abstract: Method and apparatus for detecting article engagement errors and for calibrating engagement error detection apparatus associated with a plurality of gripper arms (16) of an insertion machine (10). Gripper arms (16) at each of a plurality of insert stations S comprise a first jaw member (24) and a second jaw member (26) which selectively engage articles therebetween. Field-generating means (420) is mounted on one jaw member while a Hall Effect sensor (400) is connected on the other jaw member. The sensed flux density of the generated field is a function of the relative displacement of the first and second jaw members (24,26). A signal generated by the sensor (400) operated in a slide-by mode is related to the separation of the first jaw member (24) and second jaw member (26). If the sensor-generated signal is within predetermined limits of a stored reference signal a proper number of articles are engaged between the first and second jaw members (24,26).

Abstract: An insertion machine has a stationary table for holding inserts, and a linearly movable table for receiving and holding envelopes. The moving table jogs left or right to align the insert and envelope so that the insert may be pushed into the envelope. A parallelogram drive mechanism has a first pair of belt drives which form vertical parallel arms. As the table moves back and forth, the length of the parallel vertical drive mechanism does not change appreciably so that the ends of the vertical arms float up and down. There is no need for sliding gears, shafts, or the like to transfer power to the table. A second pair of belts drive the vertical belts from a stationary point at a center of the side of the parallelogram which is opposite the table. The second pair of drive belts enables the lower ends of the first pair of drive belts to float up or down slightly without causing any dislocation as a result of table movement.

Abstract: An insertion machine system includes an insertion machine 100 of a type wherein a plurality of insert stations 152 are positioned proximate conveyor means 120 travelling therealong for selectively feeding inserts onto the conveyor means 120. A buffer and turnover assembly 106 receives a printed envelope from in-line printer means 104 and automatically introduces the printed article onto the conveyor 120 travelling proximate the insertion stations 152. A data processor 108 governs the acquistion from an information storage medium of information indicative of text to be printed on an envelope and information indicative of insert machine control signals. The data processor 108 further governs the operation of the printing means 104 whereby the printing means 104 prints on an envelope readable text.

Abstract: An insertion machine system includes an insertion machine 100 of a type wherein a plurality of insert stations 152 are positioned proximate conveyor means 120 travelling therealong for selectively feeding inserts onto the conveyor means 120. A buffer and turnover assembly 106 receives a printed envelope from in-line printer means 104 and automatically introduces the printed article onto the conveyor 120 travelling proximate the insertion stations 152. A data processor 108 governs the acquisition from an information storage medium of information indicative of text to be printed on an envelope and information indicative of insert machine control signals. The data processor 108 further governs the operation of the printing means 104 whereby the printing means 104 prints on an envelope readable text.