The improvement in an apparatus 10 further characterized in that the arm is mounted on the carriage to move relative thereto so that it magnifies the inward movement of the carriage and effects {HEAD ~ a larger distortion} of {TAIL ~ the carton wall} 
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The improvement in an apparatus 10 further characterized in that the arm is mounted on the carriage to move relative thereto so that it magnifies the inward movement of the carriage and effects { HEAD ~ a larger distortion } of { TAIL ~ the carton wall }
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