to put him in an electric chair
Basically, Tom Robinson would be put in jail if he lost his appeal. On a deeper note, this would stand for an example of a lose for the black-white fight for freedom.
He does not believe that he will win the case initially, knowing the prejudices of the judge and jury, but he believes that he could win an appeal, which never comes to be because Tom tried to escape the jail, and was shot down.
At the close of the chapter, it is revealed that Tom Robinson has been convicted of rape. Atticus plans to appeal the verdict and continue to fight for Tom's freedom, believing in his innocence and the importance of standing up for what is right.
Tom is in the Maycomb County Jail during the time that Atticus faces the mob downtown.
He also knew that he would be killed by the racist towns people that night if he did not try to escape. (:
Judge Taylor assigns Atticus to defend Tom Robinson.
Jem goes with Atticus to tell Tom Robinson is dead
This is all from memory and may be unreliable as a result, but I believe Atticus goes into the case with the expectation that he will lose, as he is aware of the weight of the prejudice acting against Tom Robinson. During the actual court case itself it would appear that Tom is innocent and Atticus is likely to win but this is only based on modern perspective of the events in the book. The jury's verdict is surprising in light of this.
Atticus' witnesses in the trial of Tom Robinson were Sheriff Heck Tate, Bob Ewell, Mayella Ewell, Tom Robinson, and Atticus himself. Each witness provided their testimony to support their side of the case.
The court appointed Atticus to defend Tom Robinson. Atticus had aimed to defend him
The last thing Tom Robinson said to Atticus in "To Kill a Mockingbird" was, "Goodnight, sir." This was in response to Atticus thanking him after the trial.
In his final appeal, Atticus challenges the deeply ingrained racism and prejudice in Maycomb by asking the jury to rise above their prejudices and deliver a fair verdict based on evidence. He also challenges the belief that African Americans are inferior to white people, arguing for equality and justice for Tom Robinson. Additionally, Atticus challenges the idea that people should conform to societal expectations at the expense of their own values and principles by defending Tom Robinson despite the backlash he faces.