PURPOSE: An air motor with a lever type pump is provided to operate a motor by air instead of oil or coal by using post gears and a semicircular gear with air compressed by a lever. CONSTITUTION: An air motor with a lever type pump includes a lever gear(20) for driving a pump for injecting air generated by the pump into a spring air case(2) to be provided into a second lever weight(15) and a post gear(8) by equal halves, a first lever weight(11) connected to the second lever weight, of which first and second valves are opened and closed oppositely from first and second valves of the second lever weight, a lever(19) moving vertically by the opening and closing operations of the first and second weights, a pump weight die(23) and a pump weight(25) of which total length is equal to a diameter of the lever gear, and the pump weight being formed with air holes(27) mounted with a cover(26) at a side and a connection plate, so that the air holes are opened and closed in association with the connection plate to be pressed or not by the pump weight die.
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