Abstract: An unloader for unloading material from a container. In some embodiments, the unloader can include an unloader arm movable within the container, a first chain coupled to the unloader arm and movable to unload material from the container, and a second chain coupled to the unloader arm and positioned to engage material within the container upon movement of the unloader arm. The unloader can have a sensor adapted to transmit signals indicative of a force applied to the unloader arm, the first chain, and/or the second chain. A controller can receive the signal from the sensor, and can alter an operation of the unloader arm, the first chain, and/or the second chain based upon the signal received from the sensor.

Abstract: An unloader for unloading material from a container. In some embodiments, the unloader can include an unloader arm movable within the container, a first chain coupled to the unloader arm and movable to unload material from the container, and a second chain coupled to the unloader arm and positioned to engage material within the container upon movement of the unloader arm. The unloader can have a sensor adapted to transmit signals indicative of a force applied to the unloader arm, the first chain, and/or the second chain. A controller can receive the signal from the sensor, and can alter an operation of the unloader arm, the first chain, and/or the second chain based upon the signal received from the sensor.

Abstract: An improved cutter chain construction for a bottom unloader of a storage structure. A cutter arm is mounted for rotation about the center of the storage structure, and an endless chain travels in an endless path on the cutter arm and carries a plurality of cutting members or hooks that are mounted at spaced intervals along the length of the chain. Each cutting member has a relatively thin body with a sharp leading edge and an outer enlarged head. The cutting members are mounted in a sequence along the length of the chain. A first cutting member in the sequence extends laterally outward from the chain and is disposed in a first plane, while the next succeeding cutting member lies in a second plane disposed at an acute angle to the first plane, whereby movement of the cutting members through the stored material will cut a wedge shaped mass.