Lubricator assembly with automatic reset

An automatic lubricator for lubricating the wheels in a conveyor assembly, including automatic safety cut-out and reset device which is activated in the event the lubricator fails to disengage from a moving conveyor. The lubricator includes a carriage rotatably and slidably mounted on an elongated guide rod arranged parallel to the conveyor track. In normal operation, the carriage is prevented from rotating under the influence of gravity by a support roller which rests on a support bar parallel to the guide rod. If the carriage is carried by the moving conveyor beyond the point at which the lubricator should disengage from the conveyor, the support roller drops into a notch in the support rod, permitting the carriage to swing free and disengage from the conveyor. The notch is provided with a downwardly inclined support surface which returns the support roller to normal position on the support bar as the carriage is returned to the start position by a carriage return system, thereby resetting the lubricator for continued operation. The lubricator also may have a locator for the lubricator that is operatively connected to a rotary valve which is actuated by a pneumatic control system of the lubricator.