Method of producing a conical pail and machine for carrying out the method

Claim 1

A TOOL FOR CHANGING A PAIL BODY BLANK OF GENERALLY CYLINDRICAL SHAPE INTO A TAPERING BODY FORM, SAID TOOL COMPRISING A SUPPORTING MEANS HAVING THEREON A PLURALITY OF GENERALLY CYLINDRIFORM SHAPING MEMBERS ARRANGED IN A CIRCLE AND PRESENTABLE IN A PAIL BODY BLANK WITH THEIR AXES COVERGING TOWARD A COMMON POINT THEREBY TO PRESENT SHAPING SURFACES DISPOSED TO DESCRIBE A FRUSTO-CONIFORM SURFACE OF ROTATION UPON THE IMPARTING OF ROTATION TO THE SUPPORTING MEANS, MEANS LOCATED AT AT LEAST ONE END OF EACH OF SAID MEMBERS MOUNTING SAID MEMBERS ON SAID SUPPORTING MEANS FOR TRANSMISSION OF SHAPING FORCES TO SAID MEMBERS SOLELY THROUGH SAID MOUNTING MEANS WHEREBY UPON INSERTION OF THE TOOL IN TO A GENERALLY CYLINDRICAL PAIL BODY BLANK AND THE BRINGING ABOUT OF RELATIVE ROTARY MOVEMENT BETWEEN THE BLANK AND THE TOOL THE BLANK SHAPE WILL BE CHANGED TO FRUSTO-CONICAL.