David Keltie, 21, was found guilty of hanging the one-year-old boy from the window of a flat on Ruby Street in Glasgow’s east end on 20 June.
A jury at Glasgow Sheriff Court convicted him of the offence and breach of the peace after hearing he threatened officers who turned up at the property to speak to him.
Keltie was also convicted of willfully ill treating and exposing the toddler to unnecessary suffering or injury to health and holding him outside a window of a twelfth floor flat.
His co-accused and partner at the time, Emma Watson, 17, was found guilty of breach of the peace after she shouted threats at the police and refused to let them in the flat.
She was due to be sentenced yesterday but will now learn her fate next month after reports were not able to be completed.
During the trial the court heard police officers arrived at the property to speak to Keltie but were told by Watson, who shouted through the front door that he was not in and that she was unable to open the door.
However, the officers did not believe her story and persisted in trying to gain access to the property.
In evidence the jury heard that a team of firearms officers were called after the pair shouted and swore at the police, threatening to shoot them if they came into the house.
The court was told that police officers outside the flat looking up and saw Keltie standing at the window.