a bundle distribution system comprised of tilt tray carriers coupled in tandem forming a continuous loop , each conveyor being a link in the loop . vertical and horizontal wheels guide the conveyors along a closed loop path which may include curved and straight sections as well as vertical curves and inclined path sections . each carrier includs a pivotally mounted tilt tray normally maintained in an upright position . linear induction motors cooperate with a conductive plate arranged along the underside of each carrier for propulsion . the lims are distributed at spaced intervals along the closed loop track , each carrier being a movable element of the motor . the lims are operated in parallel and a speed sensor provides feedback for controlling the operating speed to a tolerance of within ± 5 %. the cam follower rollers of a tilting assembly follow a movable tilt cam which initially unlocks the tilting mechanism from the locked position followed by tilting of the carriage about its longitudinal axis . straightening cams on both sides of the track downstream from the opening cam reset the tilted tray and prevent overshooting . the multi - wheel speed sensor assures rolling engagement of at least two of the sensor wheels with at least one of the carts . a top loader which is positioned above the track so as to minimize the space required therefor , is capable of dropping signature bundles onto the desired tray with great accuracy . the tilting cam likewise assures accurate tilting and release of a bundle upon a branching out feed chute .