Abstract: An automatic choke system for automatically adjusting the amount of choke applied to a series of shots discharged from shotgun. The automatic choke system includes a tube assembly with a plurality of longitudinal slits within the distal end thereof, a collar unit attached about the tube assembly, and a swedge assembly slidably positioned between the tube assembly and the collar unit. A latch unit attached to the collar unit selectively allows the swedge assembly to move forwardly one position after each shot fired. The latch unit is operated by gas flow from the interior of the barrel of the shotgun during a shot.

Abstract: A conveyor belt scale system for increasing the weight measurement accuracy of a conveyor belt scale. The conveyor belt scale system includes a conveyor having a support frame and a belt, a first load cell positioned within the conveyor for measuring the belt after receiving a load of material (full weight), a second load cell positioned within the conveyor for measuring the belt prior to receiving a load of material (empty weight), a velocity sensor within the conveyor for measuring the velocity of the belt, and a control unit in communication with the sensors. The control unit measures the empty weight and the full weight of the belt upon a plurality of locations upon the belt. The control unit corresponds the empty weight with the full weight of each of the measured locations to calculate the material net weight.