US PATENT SUBCLASS 140 / 92.3
.~ Helix screwing through row of loops or openings

Current as of: June, 1999
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140 /   HD   WIREWORKING

71 R  DF  ARTICLE MAKING OR FORMING {22}
92.3.~ Helix screwing through row of loops or openings {8}
92.4  DF  .~.~> Method
92.5  DF  .~.~> Repeated interlacing with same row (e.g., cording mechanism)
92.6  DF  .~.~> Simultaneous interlacing of plural helices
92.7  DF  .~.~> Combined
92.8  DF  .~.~> Loop row shifter
92.9  DF  .~.~> Helix rotator travelling axially
92.93  DF  .~.~> Grooved roller helix guides
92.94  DF  .~.~> Helix embracing guides

DEFINITION

Classification: 140/92.3

Methods and apparatus in which a helix rotated about its axis adjacent a row of loops or holes threads itself through the loops or holes successively.

(1) Note. Included here, and in the indented subclasses, are processes and apparatus involving the mere juxtapositioning of elements plus the necessary manipulation required to interlace a helix with said elements to form a unitary web, fabric, or assembly. The absence of wire deformation, cutting and/or tensioning will not exclude processes and apparatus otherwise within the scope of this subclass.

(2) Note. Included here, for example, is the application of helices to the edges of perforated sheets or leaves so as to make a "spiral" bound book (see particularly subclass 92.93), the joining of coil elements by helices or the mutual intercoiling of helices to form spring fabrics, and the linking of belt ends by helices.

SEE OR SEARCH CLASS

29, Metal Working,

240.5, for means to insert and/or remove a helix by rotation and subclass 456 for related methods.

59, Chain, Staple, and Horseshoe Making,

20, for apparatus wherein a continuous rod or wire is coiled into a helix cut into sections to form links, and said links assembled and united into a completed chain. 245, Wire Fabrics and Structure,

6, for fabrics comprising a plurality of intercoiled helices.

281, Books, Strips, and Leaves,

25, for a plurality of sheets secured together by means of a helix interlaced through aligned perforations along a margin of said sheets.