Patent ID: 8136272

Claim:
A dipper adapted to be connected to a power shovel handle for movement therewith, said dipper having a dipper body defining a material receiving opening and a material discharging opening, said dipper body having a latch receiving opening adjacent one end of said discharging opening, said dipper further including a dipper door mounted on said dipper body adjacent an opposite end of said discharging opening for pivotal movement relative to said dipper body between a closed position and an opened position, and an impact actuated jaw having a “C” shape defining a lip and a chin, said jaw being rotatably mounted on said dipper door for rotation between a door-opened position and a door-closed position and positioned so that, when said jaw is in the door-opened position, said jaw chin can be impacted by the dipper body when the door pivots to the door-closed position, and so that impact by the dipper body on the chin rotates said jaw into the door-closed position where said jaw lip is in said latch opening and prevents door opening.