Inflated bag printer having the anvil mounted on a bell crank

Claim 1

In an apparatus for imprinting bags comprising an imprint marker device having a marking head, an anvil, said anvil attached to the end of a moving member, means for moving the member to move the anvil towards and away from the marking head, means for positioning a bottom wall of a bag inflated by an air jet from a stack of deflated bags between the anvil and the marking head, the means for moving, moving the anvil against the bottom wall to collapse a portion of the inflated bag to press a first surface portion thereof against the marking head, the first surface being adjacent, non-opposed to the bottom wall, and means for withdrawing the anvil from contact with the bag, the improvement of the anvil being attached to one end of a bell crank, the means for moving being a prime mover being attached to an opposite end of the bell crank, the bell crank pivotally attached to a frame member, movement of the prime mover causing the anvil to move toward and away from the marking head.

Claim 5

A device for imprinting bags which comprises: a marking device with a marking type, the marking device positioned adjacent a stack of deflated bags, means for inflating the bags one at a time, means for maintaining a first surface of the inflated bag adjacent the marking device, a movable arm, an anvil member at the end of the movable arm, means for moving the arm and the anvil for moving the anvil against a second surface of the inflated bag to collapse a portion of the inflated bag to urge a portion of the first surface thereof against the marking type, means for withdrawing the movable arm and anvil, and means for positively reinflating the collapsed portion of the bag, the arm comprising a bell crank, the anvil attached at one end of the bell crank, the means for moving the arm and anvil and the means for withdrawing the movable arm and anvil comprising a prime mover having a movable portion thereof attached to the other end of the bell crank, the bell crank being pivotally attached to a stationary frame member intermediate ends of the bell crank.

Claim 6

A device for imprinting bags which comprises: a marking device with a marking type, the marking device positioned adjacent a stack of deflated bags, means for inflating the bags one at a time, means for maintaining a first surface of the inflated bag adjacent the marking device, a movable arm, an anvil member at the end of the movable arm, means for moving the arm and the anvil for moving the anvil against a second surface of the inflated bag to collapse a portion of the inflated bag to urge a portion of the first surface thereof against the marking type, means for withdrawing the movable arm and anvil, and means for positively reinflating the collapsed portion of the bag, the arm comprising a bell crank, the anvil attached at one end of the bell crank, the means for moving the arm and anvil and the means for withdrawing the movable arm and anvil comprising a prime mover having a movable portion thereof attached to the other end of the bell crank, the bell crank being pivotally attached to a stationary frame member intermediate ends of the bell crank.