The four parts that look like washers with teeth might be spacers to fill the back of the rear dropouts. The screws pass through the ones with larger holes and thread into the threaded holes on the other ones. The curved end of the 'tooth' goes against the axle.
The other parts look like the cleats that hold the band clamps that hold the brake levers on. If the brake levers are already on then I am wrong and these are something else.