Simplify the following text for a Grade 6 native English-speaking person.
Original: James Dickinson Irvin , Sr. ( born July 19 , 1892 â `` May 15 , 1957 ) was a professional Canadian ice hockey center that played his playing career for the Chicago Blackhawks of the National Hockey League ( NHL ) and also coached hockey in the NHL .
Simplified: James Dickinson Irvin , Sr. ( July 19 , 1892 â `` May 15 , 1957 ) was a Canadian ice hockey player and coach in the National Hockey League .