Inflated bag printing device with adjustable type drive

Claim 1

A bag imprinting device for imprinting a portion of a surface of a bag inflated from a stack of bags comprising: a frame member having an imprinting means thereon, the imprinting means including imprinting indicia positioned at an imprinting station, an anvil attached to a movable arm carried by a pivotable member pivotably attached to the frame, the anvil movable towards and away from the station in dependent response to movement of the pivotable member, The anvil effective to collapse a portion of a bag inflated from a stack of bags by an air jet and press a surface portion thereof against the indicia, tape supply and take up means on said frame, guide means guiding tape from said supply to said take up means past said station between the indicia and the bag, tape drive means for moving said tape from the supply to the take up means, power means carried by said frame including a movable power arm operatively attached to said pivotable member through a cam connection member, the pivotable member having two leg portions connected together by a bight portion, the cam member attached to one leg portion for movement therewith, the movable arm connected to the bight portion for movement therewith, a linkage member having one end adjustably connected to the other of said leg portions, said linkage member having the other end thereof operatively connected to said tape drive to actuate the tape drive in dependent response to movement of the pivotable member, whereby movement of the power arm will simultaneously cause pivoting of the pivotable member with respect to portions of the frame thereby moving the anvil towards and away from the station while moving the tape from the supply to the take up means only when the anvil is in motion.