Aged Father not sharing family business

Sir/man, my father is 69 years old, n my age is 38, I m married with a 8 year old daughter. I am involved in my fathers construction business from my school days (from 1995). Now since last 5 to 8 years our business is facing losses because my aged n tired father is not able to handle it, he is proprietor of his firm, now because of inferiority complex he is neither leaving the business nor making me partner in his business, even I can not raise any business loan, because my name is not in business , , he is not allowing me to take any business decision, can law me in hi admit in his firm ?