Today there are different prototypes with various operating systems in ball dispensing machines, but the first pitching machine was invented by Charles Hinton in the mid 1890s.invented by Charles Hinton in the mid 1890s. The need for a pitching machine is to avoid constant injuries in baseball training at amateur, semi-professional and professional levels, since it is required to simulate the conditions of match pitching to all batters of the team, demanding excessive muscle loads to the pitchers (usually fewer players than batters) causing muscle and joint injuries.