??????? ????? ????? ?????? ??????? ???? ?????? ????? ????? ??? ???? ???? ????? ???????? ??????? ???? ?? ???????. Two wheel and axle arrangements(A) With a substantial equipment and a little gear connected to precisely the same shaft, or axle, a pressure file ??????? ??? ?????? ???? ?????? ????? ???? ???? ??????? ??????? ?? ?? ?? ???? ?? ????