| Show GOING gomm BY alit AIR POWER all the tb gold and silver coins 0 of england edgland eng edg and are struck by atmospheric pressure or in other words the air we breathe coins coins money by a complicated arrangement ement of pneumatic valves levers spi sp tings ings end and other mechanical c ch ha ical appliances the air is made to exert its vast wei wel weight bt in rapid alternations upon a series of P pistons which again connected with the coining pre presses es carry down the dies dips upon the pieces oe of metal metai tobe coined with unerring precision and force 1 1 |
