초록 ▼

The mouth end of a large filled sack is held taut and flat by holding means. Parallel folding bars extend downwardly from carriers like the prongs of a comb at both sides of the flattened mouth end. The carriers can be moved towards and away from each other, and raised and lowered, so that the foldi

The mouth end of a large filled sack is held taut and flat by holding means. Parallel folding bars extend downwardly from carriers like the prongs of a comb at both sides of the flattened mouth end. The carriers can be moved towards and away from each other, and raised and lowered, so that the folding bars gather or ruffle the mouth end to form a frill and are then withdrawn.

대표청구항 ▼

Apparatus for gathering a flattened filling end of a large sack by forming zig-zag folds in the end comprising: lateral holding means (18) for holding a flattened filling end of a sack in an upwardly extending position; first carrier means (10) and second carrier means (11) positioned above the flat

Apparatus for gathering a flattened filling end of a large sack by forming zig-zag folds in the end comprising: lateral holding means (18) for holding a flattened filling end of a sack in an upwardly extending position; first carrier means (10) and second carrier means (11) positioned above the flattened filling end on opposite sides of a plane defined by the flattened filling end; a plurality of first folding bars (3, 4, 5) secured to and extending downwardly from said first carrier means (10); a plurality of second folding bars (6, 7, 8, 9) secured to and extending downwardly from said second carrier means (11); movement means for relatively moving said first and said carrier means between spaced apart positions and positions in which said first folding bars are located in gaps between said second folding bars to thereby form zig-zag folds in the flattened filling end, and for moving said first and second carrier means between lowered positions in which lower ends of said first and second folding bars are positioned below the top of the flattened filling end and raised positions in which the lower ends are positioned above the top of the flattened filling end, said first and said second carrier means being movable into said raised positions after formation of the zig-zag folds to thereby move said first and said second folding bars out of the folds.