Baseball propelling machine with sequential indicator lights

摘要: A baseball propelling machine employing a wheeled frame, pressure chamber and barrel, ball receptacle or magazine, bank of count-down indicator lights. The frame includes handle bars which facilitate easy maneuverability the machine. barrel novel arrangement internally operating firing cylinder, latter movably on stationary piston for controlling functions. supports magazine associated with automatically feeding balls to barrel. An outer end portion is rotatably adjustable carries curve control mechanism applying various curves other actions baseballs leaving lights three bulbs operated in sequence by indicate ready, set fire positions, respectively. allows it be its set, automatic, semiautomatic, manual operations, furthermore such device remotely