Having problematic Father, need solution

Hi Sir/Mam, My father is very irresponsible non-family kind of person. Hes government employee and through out his years as far as could remember, he was involved in one or other business and have lost lakhs of rupees continuously. My mother served one school for 40 years and gave all her income to my father including her PF and pension to him for his business or debts. I have also given money to him for the first 10 years of career before realizing hes not going to change his behavior or approach. My mother lives with me for 10 years and only in the past 2-3 years she stopped giving her pension to him after she got convinced by what I have been telling her for few years that my father will not change. My elder brother got into Love Marriage in his earlier age itself and he does not care much about the family. He has chosen his path towards my sister in laws family. But recent years hes getting some financial help from my father as my father arranges loan for him from our native. So my brothers involvement in family issues in recent years is on and off. If he needs help from my father, those times he will not discuss any family issues with us, if no such need is there for him at that time he will start talking. We are also not sure if business is the only reason my father is losing money as he has been doing this kind of losses for 30 years now. We have one house in our native, no other property is there. This house is in my mothers name. I have been telling My mother and brother that this house has to be registered in the name of my sister in law and my Wife if we have to save the house from my father, have been telling this for few years but my brother did not accept and my mother also was not sure. I told my sister in law and my wife will give cheque as security to my mother for this registration. But they did not agree that time, but now few months back my brother said we will do it and we will pay our fathers current debt (which the amount and the lenders my father is not telling forthright) and will transfer the property and he already discussed that with his in laws, my mother also agreed. Now before going in this direction want to know following thing How to inform the lenders in legal way that please come and collect the amount and we are not responsible for any future debts by our father? Also it is possible that my brother could go back in his words on this move and say that lets not proceed with this. In this case, I want to come out of this situation, I donot want anything from the house in our native (though have given money to my father in the first 10 years of my career and have done some work in the house), but also do not want to carry the liabilities of my father any further. How could we proceed on this?