US PATENT SUBCLASS 271 / 179
.~.~.~.~ Screw or helix

Current as of: June, 1999
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271 /   HD   SHEET FEEDING OR DELIVERING

278  DF  DELIVERING {13}
306  DF  .~ With transfer means between conveyor and receiver {8}
177  DF  .~.~ Means to push sheets out of edgewise into broadside movement (e.g., packer) {2}
178  DF  .~.~.~ Rotating packer {1}
179.~.~.~.~ Screw or helix

DEFINITION

Classification: 271/179

(under subclass 178) Device wherein the member includes a surface that simultaneously winds around said axis and progresses axially along said axis.

(1) Note. In this subclass the axis of the packer is usually perpendicular to the surface of the sheet and the packer pushes each sheet along the packer axis.